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/* |
/* |
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* security/ccsecurity/policy_io.c |
* security/ccsecurity/policy_io.c |
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* |
* |
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* Copyright (C) 2005-2009 NTT DATA CORPORATION |
* Copyright (C) 2005-2010 NTT DATA CORPORATION |
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* |
* |
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* Version: 1.7.0 2009/10/01 |
* Version: 1.8.0-pre 2010/10/28 |
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* |
* |
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* This file is applicable to both 2.4.30 and 2.6.11 and later. |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
9 |
* See README.ccs for ChangeLog. |
* See README.ccs for ChangeLog. |
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|
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#include "internal.h" |
#include "internal.h" |
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|
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static struct ccs_profile ccs_default_profile = { |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
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.learning = &ccs_default_profile.preference, |
|
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.permissive = &ccs_default_profile.preference, |
/** |
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.enforcing = &ccs_default_profile.preference, |
* __wait_event_interruptible_timeout - Sleep until a condition gets true or a timeout elapses. |
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.audit = &ccs_default_profile.preference, |
* |
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#ifdef CONFIG_CCSECURITY_AUDIT |
* @wq: The waitqueue to wait on. |
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.preference.audit_max_grant_log = CONFIG_CCSECURITY_MAX_GRANT_LOG, |
* @condition: A C expression for the event to wait for. |
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.preference.audit_max_reject_log = CONFIG_CCSECURITY_MAX_REJECT_LOG, |
* @ret: Timeout, in jiffies. |
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* |
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* Returns 0 if the @timeout elapsed, -ERESTARTSYS if it was interrupted by a |
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* signal, and the remaining jiffies otherwise if the condition evaluated to |
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* true before the timeout elapsed. |
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* |
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* This is for compatibility with older kernels. |
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*/ |
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#define __wait_event_interruptible_timeout(wq, condition, ret) \ |
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do { \ |
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wait_queue_t __wait; \ |
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init_waitqueue_entry(&__wait, current); \ |
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\ |
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add_wait_queue(&wq, &__wait); \ |
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for (;;) { \ |
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set_current_state(TASK_INTERRUPTIBLE); \ |
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if (condition) \ |
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break; \ |
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if (!signal_pending(current)) { \ |
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ret = schedule_timeout(ret); \ |
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if (!ret) \ |
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break; \ |
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continue; \ |
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} \ |
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ret = -ERESTARTSYS; \ |
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break; \ |
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} \ |
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current->state = TASK_RUNNING; \ |
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remove_wait_queue(&wq, &__wait); \ |
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} while (0) |
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/** |
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* wait_event_interruptible_timeout - Sleep until a condition gets true or a timeout elapses. |
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* |
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* @wq: The waitqueue to wait on. |
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* @condition: A C expression for the event to wait for. |
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* @timeout: Timeout, in jiffies. |
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* |
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* Returns 0 if the @timeout elapsed, -ERESTARTSYS if it was interrupted by a |
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* signal, and the remaining jiffies otherwise if the condition evaluated to |
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* true before the timeout elapsed. |
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* |
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* This is for compatibility with older kernels. |
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*/ |
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#define wait_event_interruptible_timeout(wq, condition, timeout) \ |
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({ \ |
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long __ret = timeout; \ |
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if (!(condition)) \ |
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__wait_event_interruptible_timeout(wq, condition, __ret); \ |
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__ret; \ |
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}) |
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#endif |
#endif |
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.preference.audit_task_info = true, |
|
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.preference.audit_path_info = true, |
/** |
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.preference.enforcing_penalty = 0, |
* list_for_each_cookie - iterate over a list with cookie. |
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.preference.enforcing_verbose = true, |
* |
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.preference.learning_max_entry = CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY, |
* @pos: Pointer to "struct list_head". |
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.preference.learning_verbose = false, |
* @head: Pointer to "struct list_head". |
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.preference.learning_exec_realpath = true, |
*/ |
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.preference.learning_exec_argv0 = true, |
#define list_for_each_cookie(pos, head) \ |
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.preference.learning_symlink_target = true, |
for (pos = pos ? pos : srcu_dereference((head)->next, &ccs_ss); \ |
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.preference.permissive_verbose = true |
pos != (head); pos = srcu_dereference(pos->next, &ccs_ss)) |
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}; |
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/* Profile version. Currently only 20100903 is defined. */ |
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static unsigned int ccs_profile_version; |
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/* Profile table. Memory is allocated as needed. */ |
/* Profile table. Memory is allocated as needed. */ |
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static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
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/* Lock for protecting "struct ccs_profile"->comment */ |
/* String table for operation mode. */ |
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static DEFINE_SPINLOCK(ccs_profile_comment_lock); |
const char * const ccs_mode[CCS_CONFIG_MAX_MODE] = { |
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[CCS_CONFIG_DISABLED] = "disabled", |
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[CCS_CONFIG_LEARNING] = "learning", |
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[CCS_CONFIG_PERMISSIVE] = "permissive", |
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[CCS_CONFIG_ENFORCING] = "enforcing" |
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}; |
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|
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/* String table for functionality that takes 4 modes. */ |
/* String table for /proc/ccs/profile interface. */ |
102 |
static const char *ccs_mode_4[4] = { |
const char * const ccs_mac_keywords[CCS_MAX_MAC_INDEX |
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"disabled", "learning", "permissive", "enforcing" |
+ CCS_MAX_MAC_CATEGORY_INDEX] = { |
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/* CONFIG::file group */ |
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[CCS_MAC_FILE_EXECUTE] = "execute", |
106 |
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[CCS_MAC_FILE_OPEN] = "open", |
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[CCS_MAC_FILE_CREATE] = "create", |
108 |
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[CCS_MAC_FILE_UNLINK] = "unlink", |
109 |
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[CCS_MAC_FILE_GETATTR] = "getattr", |
110 |
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[CCS_MAC_FILE_MKDIR] = "mkdir", |
111 |
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[CCS_MAC_FILE_RMDIR] = "rmdir", |
112 |
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[CCS_MAC_FILE_MKFIFO] = "mkfifo", |
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[CCS_MAC_FILE_MKSOCK] = "mksock", |
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[CCS_MAC_FILE_TRUNCATE] = "truncate", |
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[CCS_MAC_FILE_SYMLINK] = "symlink", |
116 |
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[CCS_MAC_FILE_MKBLOCK] = "mkblock", |
117 |
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[CCS_MAC_FILE_MKCHAR] = "mkchar", |
118 |
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[CCS_MAC_FILE_LINK] = "link", |
119 |
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[CCS_MAC_FILE_RENAME] = "rename", |
120 |
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[CCS_MAC_FILE_CHMOD] = "chmod", |
121 |
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[CCS_MAC_FILE_CHOWN] = "chown", |
122 |
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[CCS_MAC_FILE_CHGRP] = "chgrp", |
123 |
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[CCS_MAC_FILE_IOCTL] = "ioctl", |
124 |
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[CCS_MAC_FILE_CHROOT] = "chroot", |
125 |
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[CCS_MAC_FILE_MOUNT] = "mount", |
126 |
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[CCS_MAC_FILE_UMOUNT] = "unmount", |
127 |
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[CCS_MAC_FILE_PIVOT_ROOT] = "pivot_root", |
128 |
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/* CONFIG::misc group */ |
129 |
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[CCS_MAC_ENVIRON] = "env", |
130 |
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/* CONFIG::network group */ |
131 |
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[CCS_MAC_NETWORK_INET_STREAM_BIND] = "inet_stream_bind", |
132 |
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[CCS_MAC_NETWORK_INET_STREAM_LISTEN] = "inet_stream_listen", |
133 |
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[CCS_MAC_NETWORK_INET_STREAM_CONNECT] = "inet_stream_connect", |
134 |
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[CCS_MAC_NETWORK_INET_STREAM_ACCEPT] = "inet_stream_accept", |
135 |
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[CCS_MAC_NETWORK_INET_DGRAM_BIND] = "inet_dgram_bind", |
136 |
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[CCS_MAC_NETWORK_INET_DGRAM_SEND] = "inet_dgram_send", |
137 |
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[CCS_MAC_NETWORK_INET_DGRAM_RECV] = "inet_dgram_recv", |
138 |
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[CCS_MAC_NETWORK_INET_RAW_BIND] = "inet_raw_bind", |
139 |
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[CCS_MAC_NETWORK_INET_RAW_SEND] = "inet_raw_send", |
140 |
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[CCS_MAC_NETWORK_INET_RAW_RECV] = "inet_raw_recv", |
141 |
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[CCS_MAC_NETWORK_UNIX_STREAM_BIND] = "unix_stream_bind", |
142 |
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[CCS_MAC_NETWORK_UNIX_STREAM_LISTEN] = "unix_stream_listen", |
143 |
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[CCS_MAC_NETWORK_UNIX_STREAM_CONNECT] = "unix_stream_connect", |
144 |
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[CCS_MAC_NETWORK_UNIX_STREAM_ACCEPT] = "unix_stream_accept", |
145 |
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[CCS_MAC_NETWORK_UNIX_DGRAM_BIND] = "unix_dgram_bind", |
146 |
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[CCS_MAC_NETWORK_UNIX_DGRAM_SEND] = "unix_dgram_send", |
147 |
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[CCS_MAC_NETWORK_UNIX_DGRAM_RECV] = "unix_dgram_recv", |
148 |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_BIND] = "unix_seqpacket_bind", |
149 |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_LISTEN] = "unix_seqpacket_listen", |
150 |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_CONNECT] = "unix_seqpacket_connect", |
151 |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_ACCEPT] = "unix_seqpacket_accept", |
152 |
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/* CONFIG::ipc group */ |
153 |
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[CCS_MAC_SIGNAL] = "signal", |
154 |
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/* CONFIG::capability group */ |
155 |
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[CCS_MAC_CAPABILITY_USE_ROUTE_SOCKET] = "use_route", |
156 |
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[CCS_MAC_CAPABILITY_USE_PACKET_SOCKET] = "use_packet", |
157 |
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[CCS_MAC_CAPABILITY_SYS_REBOOT] = "SYS_REBOOT", |
158 |
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[CCS_MAC_CAPABILITY_SYS_VHANGUP] = "SYS_VHANGUP", |
159 |
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[CCS_MAC_CAPABILITY_SYS_SETTIME] = "SYS_TIME", |
160 |
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[CCS_MAC_CAPABILITY_SYS_NICE] = "SYS_NICE", |
161 |
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[CCS_MAC_CAPABILITY_SYS_SETHOSTNAME] = "SYS_SETHOSTNAME", |
162 |
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[CCS_MAC_CAPABILITY_USE_KERNEL_MODULE] = "use_kernel_module", |
163 |
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[CCS_MAC_CAPABILITY_SYS_KEXEC_LOAD] = "SYS_KEXEC_LOAD", |
164 |
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[CCS_MAC_CAPABILITY_SYS_PTRACE] = "SYS_PTRACE", |
165 |
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/* CONFIG group */ |
166 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_FILE] = "file", |
167 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_NETWORK] = "network", |
168 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_MISC] = "misc", |
169 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_IPC] = "ipc", |
170 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
171 |
}; |
}; |
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|
173 |
/* String table for /proc/ccs/profile */ |
/* String table for path operation. */ |
174 |
static const char *ccs_mac_keywords[CCS_MAX_MAC_INDEX + |
const char * const ccs_path_keyword[CCS_MAX_PATH_OPERATION] = { |
175 |
CCS_MAX_CAPABILITY_INDEX + |
[CCS_TYPE_EXECUTE] = "execute", |
176 |
CCS_MAX_MAC_CATEGORY_INDEX] = { |
[CCS_TYPE_READ] = "read", |
177 |
[CCS_MAC_FILE_EXECUTE] |
[CCS_TYPE_WRITE] = "write", |
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= "file::execute", |
[CCS_TYPE_APPEND] = "append", |
179 |
[CCS_MAC_FILE_OPEN] |
[CCS_TYPE_UNLINK] = "unlink", |
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= "file::open", |
[CCS_TYPE_GETATTR] = "getattr", |
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[CCS_MAC_FILE_CREATE] |
[CCS_TYPE_RMDIR] = "rmdir", |
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= "file::create", |
[CCS_TYPE_TRUNCATE] = "truncate", |
183 |
[CCS_MAC_FILE_UNLINK] |
[CCS_TYPE_SYMLINK] = "symlink", |
184 |
= "file::unlink", |
[CCS_TYPE_CHROOT] = "chroot", |
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[CCS_MAC_FILE_MKDIR] |
[CCS_TYPE_UMOUNT] = "unmount", |
186 |
= "file::mkdir", |
}; |
187 |
[CCS_MAC_FILE_RMDIR] |
|
188 |
= "file::rmdir", |
/* String table for categories. */ |
189 |
[CCS_MAC_FILE_MKFIFO] |
static const char * const ccs_category_keywords[CCS_MAX_MAC_CATEGORY_INDEX] = { |
190 |
= "file::mkfifo", |
[CCS_MAC_CATEGORY_FILE] = "file", |
191 |
[CCS_MAC_FILE_MKSOCK] |
[CCS_MAC_CATEGORY_NETWORK] = "network", |
192 |
= "file::mksock", |
[CCS_MAC_CATEGORY_MISC] = "misc", |
193 |
[CCS_MAC_FILE_TRUNCATE] |
[CCS_MAC_CATEGORY_IPC] = "ipc", |
194 |
= "file::truncate", |
[CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
195 |
[CCS_MAC_FILE_SYMLINK] |
}; |
196 |
= "file::symlink", |
|
197 |
[CCS_MAC_FILE_REWRITE] |
/* String table for conditions. */ |
198 |
= "file::rewrite", |
const char * const ccs_condition_keyword[CCS_MAX_CONDITION_KEYWORD] = { |
199 |
[CCS_MAC_FILE_MKBLOCK] |
[CCS_TASK_UID] = "task.uid", |
200 |
= "file::mkblock", |
[CCS_TASK_EUID] = "task.euid", |
201 |
[CCS_MAC_FILE_MKCHAR] |
[CCS_TASK_SUID] = "task.suid", |
202 |
= "file::mkchar", |
[CCS_TASK_FSUID] = "task.fsuid", |
203 |
[CCS_MAC_FILE_LINK] |
[CCS_TASK_GID] = "task.gid", |
204 |
= "file::link", |
[CCS_TASK_EGID] = "task.egid", |
205 |
[CCS_MAC_FILE_RENAME] |
[CCS_TASK_SGID] = "task.sgid", |
206 |
= "file::rename", |
[CCS_TASK_FSGID] = "task.fsgid", |
207 |
[CCS_MAC_FILE_CHMOD] |
[CCS_TASK_PID] = "task.pid", |
208 |
= "file::chmod", |
[CCS_TASK_PPID] = "task.ppid", |
209 |
[CCS_MAC_FILE_CHOWN] |
[CCS_EXEC_ARGC] = "exec.argc", |
210 |
= "file::chown", |
[CCS_EXEC_ENVC] = "exec.envc", |
211 |
[CCS_MAC_FILE_CHGRP] |
[CCS_TYPE_IS_SOCKET] = "socket", |
212 |
= "file::chgrp", |
[CCS_TYPE_IS_SYMLINK] = "symlink", |
213 |
[CCS_MAC_FILE_IOCTL] |
[CCS_TYPE_IS_FILE] = "file", |
214 |
= "file::ioctl", |
[CCS_TYPE_IS_BLOCK_DEV] = "block", |
215 |
[CCS_MAC_FILE_CHROOT] |
[CCS_TYPE_IS_DIRECTORY] = "directory", |
216 |
= "file::chroot", |
[CCS_TYPE_IS_CHAR_DEV] = "char", |
217 |
[CCS_MAC_FILE_MOUNT] |
[CCS_TYPE_IS_FIFO] = "fifo", |
218 |
= "file::mount", |
[CCS_MODE_SETUID] = "setuid", |
219 |
[CCS_MAC_FILE_UMOUNT] |
[CCS_MODE_SETGID] = "setgid", |
220 |
= "file::umount", |
[CCS_MODE_STICKY] = "sticky", |
221 |
[CCS_MAC_FILE_PIVOT_ROOT] |
[CCS_MODE_OWNER_READ] = "owner_read", |
222 |
= "file::pivot_root", |
[CCS_MODE_OWNER_WRITE] = "owner_write", |
223 |
[CCS_MAC_ENVIRON] |
[CCS_MODE_OWNER_EXECUTE] = "owner_execute", |
224 |
= "misc::env", |
[CCS_MODE_GROUP_READ] = "group_read", |
225 |
[CCS_MAC_NETWORK_UDP_BIND] |
[CCS_MODE_GROUP_WRITE] = "group_write", |
226 |
= "network::inet_udp_bind", |
[CCS_MODE_GROUP_EXECUTE] = "group_execute", |
227 |
[CCS_MAC_NETWORK_UDP_CONNECT] |
[CCS_MODE_OTHERS_READ] = "others_read", |
228 |
= "network::inet_udp_connect", |
[CCS_MODE_OTHERS_WRITE] = "others_write", |
229 |
[CCS_MAC_NETWORK_TCP_BIND] |
[CCS_MODE_OTHERS_EXECUTE] = "others_execute", |
230 |
= "network::inet_tcp_bind", |
[CCS_TASK_TYPE] = "task.type", |
231 |
[CCS_MAC_NETWORK_TCP_LISTEN] |
[CCS_TASK_EXECUTE_HANDLER] = "execute_handler", |
232 |
= "network::inet_tcp_listen", |
[CCS_EXEC_REALPATH] = "exec.realpath", |
233 |
[CCS_MAC_NETWORK_TCP_CONNECT] |
[CCS_SYMLINK_TARGET] = "symlink.target", |
234 |
= "network::inet_tcp_connect", |
[CCS_PATH1_UID] = "path1.uid", |
235 |
[CCS_MAC_NETWORK_TCP_ACCEPT] |
[CCS_PATH1_GID] = "path1.gid", |
236 |
= "network::inet_tcp_accept", |
[CCS_PATH1_INO] = "path1.ino", |
237 |
[CCS_MAC_NETWORK_RAW_BIND] |
[CCS_PATH1_MAJOR] = "path1.major", |
238 |
= "network::inet_raw_bind", |
[CCS_PATH1_MINOR] = "path1.minor", |
239 |
[CCS_MAC_NETWORK_RAW_CONNECT] |
[CCS_PATH1_PERM] = "path1.perm", |
240 |
= "network::inet_raw_connect", |
[CCS_PATH1_TYPE] = "path1.type", |
241 |
[CCS_MAC_SIGNAL] |
[CCS_PATH1_DEV_MAJOR] = "path1.dev_major", |
242 |
= "ipc::signal", |
[CCS_PATH1_DEV_MINOR] = "path1.dev_minor", |
243 |
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CREATE] |
[CCS_PATH2_UID] = "path2.uid", |
244 |
= "capability::inet_tcp_create", |
[CCS_PATH2_GID] = "path2.gid", |
245 |
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_LISTEN] |
[CCS_PATH2_INO] = "path2.ino", |
246 |
= "capability::inet_tcp_listen", |
[CCS_PATH2_MAJOR] = "path2.major", |
247 |
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CONNECT] |
[CCS_PATH2_MINOR] = "path2.minor", |
248 |
= "capability::inet_tcp_connect", |
[CCS_PATH2_PERM] = "path2.perm", |
249 |
[CCS_MAX_MAC_INDEX + CCS_USE_INET_DGRAM_SOCKET] |
[CCS_PATH2_TYPE] = "path2.type", |
250 |
= "capability::use_inet_udp", |
[CCS_PATH2_DEV_MAJOR] = "path2.dev_major", |
251 |
[CCS_MAX_MAC_INDEX + CCS_USE_INET_RAW_SOCKET] |
[CCS_PATH2_DEV_MINOR] = "path2.dev_minor", |
252 |
= "capability::use_inet_ip", |
[CCS_PATH1_PARENT_UID] = "path1.parent.uid", |
253 |
[CCS_MAX_MAC_INDEX + CCS_USE_ROUTE_SOCKET] |
[CCS_PATH1_PARENT_GID] = "path1.parent.gid", |
254 |
= "capability::use_route", |
[CCS_PATH1_PARENT_INO] = "path1.parent.ino", |
255 |
[CCS_MAX_MAC_INDEX + CCS_USE_PACKET_SOCKET] |
[CCS_PATH1_PARENT_PERM] = "path1.parent.perm", |
256 |
= "capability::use_packet", |
[CCS_PATH2_PARENT_UID] = "path2.parent.uid", |
257 |
[CCS_MAX_MAC_INDEX + CCS_SYS_MOUNT] |
[CCS_PATH2_PARENT_GID] = "path2.parent.gid", |
258 |
= "capability::SYS_MOUNT", |
[CCS_PATH2_PARENT_INO] = "path2.parent.ino", |
259 |
[CCS_MAX_MAC_INDEX + CCS_SYS_UMOUNT] |
[CCS_PATH2_PARENT_PERM] = "path2.parent.perm", |
260 |
= "capability::SYS_UMOUNT", |
}; |
261 |
[CCS_MAX_MAC_INDEX + CCS_SYS_REBOOT] |
|
262 |
= "capability::SYS_REBOOT", |
/* String table for PREFERENCE keyword. */ |
263 |
[CCS_MAX_MAC_INDEX + CCS_SYS_CHROOT] |
static const char * const ccs_pref_keywords[CCS_MAX_PREF] = { |
264 |
= "capability::SYS_CHROOT", |
[CCS_PREF_MAX_GRANT_LOG] = "max_grant_log", |
265 |
[CCS_MAX_MAC_INDEX + CCS_SYS_KILL] |
[CCS_PREF_MAX_REJECT_LOG] = "max_reject_log", |
266 |
= "capability::SYS_KILL", |
[CCS_PREF_MAX_LEARNING_ENTRY] = "max_learning_entry", |
267 |
[CCS_MAX_MAC_INDEX + CCS_SYS_VHANGUP] |
[CCS_PREF_ENFORCING_PENALTY] = "enforcing_penalty", |
|
= "capability::SYS_VHANGUP", |
|
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[CCS_MAX_MAC_INDEX + CCS_SYS_SETTIME] |
|
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= "capability::SYS_TIME", |
|
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[CCS_MAX_MAC_INDEX + CCS_SYS_NICE] |
|
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= "capability::SYS_NICE", |
|
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[CCS_MAX_MAC_INDEX + CCS_SYS_SETHOSTNAME] |
|
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= "capability::SYS_SETHOSTNAME", |
|
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[CCS_MAX_MAC_INDEX + CCS_USE_KERNEL_MODULE] |
|
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= "capability::use_kernel_module", |
|
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_FIFO] |
|
|
= "capability::create_fifo", |
|
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_BLOCK_DEV] |
|
|
= "capability::create_block_dev", |
|
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_CHAR_DEV] |
|
|
= "capability::create_char_dev", |
|
|
[CCS_MAX_MAC_INDEX + CCS_CREATE_UNIX_SOCKET] |
|
|
= "capability::create_unix_socket", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_LINK] |
|
|
= "capability::SYS_LINK", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SYMLINK] |
|
|
= "capability::SYS_SYMLINK", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_RENAME] |
|
|
= "capability::SYS_RENAME", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_UNLINK] |
|
|
= "capability::SYS_UNLINK", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHMOD] |
|
|
= "capability::SYS_CHMOD", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_CHOWN] |
|
|
= "capability::SYS_CHOWN", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_IOCTL] |
|
|
= "capability::SYS_IOCTL", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_KEXEC_LOAD] |
|
|
= "capability::SYS_KEXEC_LOAD", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_PIVOT_ROOT] |
|
|
= "capability::SYS_PIVOT_ROOT", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_PTRACE] |
|
|
= "capability::SYS_PTRACE", |
|
|
[CCS_MAX_MAC_INDEX + CCS_CONCEAL_MOUNT] |
|
|
= "capability::conceal_mount", |
|
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
|
|
+ CCS_MAC_CATEGORY_FILE] = "file", |
|
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
|
|
+ CCS_MAC_CATEGORY_NETWORK] = "network", |
|
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
|
|
+ CCS_MAC_CATEGORY_MISC] = "misc", |
|
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
|
|
+ CCS_MAC_CATEGORY_IPC] = "ipc", |
|
|
[CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
|
|
+ CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
|
268 |
}; |
}; |
269 |
|
|
270 |
/* Permit policy management by non-root user? */ |
/* Permit policy management by non-root user? */ |
271 |
static bool ccs_manage_by_non_root; |
static bool ccs_manage_by_non_root; |
272 |
|
|
273 |
/** |
/** |
274 |
* ccs_cap2keyword - Convert capability operation to capability name. |
* ccs_yesno - Return "yes" or "no". |
275 |
* |
* |
276 |
* @operation: The capability index. |
* @value: Bool value. |
277 |
* |
* |
278 |
* Returns the name of the specified capability's name. |
* Returns "yes" if @value is not 0, "no" otherwise. |
279 |
*/ |
*/ |
280 |
const char *ccs_cap2keyword(const u8 operation) |
static const char *ccs_yesno(const unsigned int value) |
281 |
{ |
{ |
282 |
return operation < CCS_MAX_CAPABILITY_INDEX |
return value ? "yes" : "no"; |
|
? ccs_mac_keywords[CCS_MAX_MAC_INDEX + operation] + 12 : NULL; |
|
283 |
} |
} |
284 |
|
|
285 |
|
/* Prototype fpr ccs_addprintf(). */ |
286 |
|
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
287 |
|
__attribute__ ((format(printf, 3, 4))); |
288 |
|
|
289 |
/** |
/** |
290 |
* ccs_yesno - Return "yes" or "no". |
* ccs_addprintf - strncat()-like-snprintf(). |
291 |
* |
* |
292 |
* @value: Bool value. |
* @buffer: Buffer to write to. Must be '\0'-terminated. |
293 |
|
* @len: Size of @buffer. |
294 |
|
* @fmt: The printf()'s format string, followed by parameters. |
295 |
|
* |
296 |
|
* Returns nothing. |
297 |
*/ |
*/ |
298 |
static const char *ccs_yesno(const unsigned int value) |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
299 |
{ |
{ |
300 |
return value ? "yes" : "no"; |
va_list args; |
301 |
|
const int pos = strlen(buffer); |
302 |
|
va_start(args, fmt); |
303 |
|
vsnprintf(buffer + pos, len - pos - 1, fmt, args); |
304 |
|
va_end(args); |
305 |
} |
} |
306 |
|
|
307 |
/** |
/** |
308 |
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
* ccs_flush - Flush queued string to userspace's buffer. |
309 |
* |
* |
310 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* @fmt: The printf()'s format string, followed by parameters. |
|
311 |
* |
* |
312 |
* Returns true on success, false otherwise. |
* Returns true if all data was flushed, false otherwise. |
313 |
|
*/ |
314 |
|
static bool ccs_flush(struct ccs_io_buffer *head) |
315 |
|
{ |
316 |
|
while (head->r.w_pos) { |
317 |
|
const char *w = head->r.w[0]; |
318 |
|
int len = strlen(w); |
319 |
|
if (len) { |
320 |
|
if (len > head->read_user_buf_avail) |
321 |
|
len = head->read_user_buf_avail; |
322 |
|
if (!len) |
323 |
|
return false; |
324 |
|
if (copy_to_user(head->read_user_buf, w, len)) |
325 |
|
return false; |
326 |
|
head->read_user_buf_avail -= len; |
327 |
|
head->read_user_buf += len; |
328 |
|
w += len; |
329 |
|
} |
330 |
|
if (*w) { |
331 |
|
head->r.w[0] = w; |
332 |
|
return false; |
333 |
|
} |
334 |
|
/* Add '\0' for audit logs and query. */ |
335 |
|
if (head->poll) { |
336 |
|
if (!head->read_user_buf_avail || |
337 |
|
copy_to_user(head->read_user_buf, "", 1)) |
338 |
|
return false; |
339 |
|
head->read_user_buf_avail--; |
340 |
|
head->read_user_buf++; |
341 |
|
} |
342 |
|
head->r.w_pos--; |
343 |
|
for (len = 0; len < head->r.w_pos; len++) |
344 |
|
head->r.w[len] = head->r.w[len + 1]; |
345 |
|
} |
346 |
|
head->r.avail = 0; |
347 |
|
return true; |
348 |
|
} |
349 |
|
|
350 |
|
/** |
351 |
|
* ccs_set_string - Queue string to "struct ccs_io_buffer" structure. |
352 |
|
* |
353 |
|
* @head: Pointer to "struct ccs_io_buffer". |
354 |
|
* @string: String to print. |
355 |
* |
* |
356 |
* The snprintf() will truncate, but ccs_io_printf() won't. |
* Returns nothing. |
357 |
|
* |
358 |
|
* Note that @string has to be kept valid until @head is kfree()d. |
359 |
|
* This means that char[] allocated on stack memory cannot be passed to |
360 |
|
* this function. Use ccs_io_printf() for char[] allocated on stack memory. |
361 |
*/ |
*/ |
362 |
bool ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
static void ccs_set_string(struct ccs_io_buffer *head, const char *string) |
363 |
|
{ |
364 |
|
if (head->r.w_pos < CCS_MAX_IO_READ_QUEUE) { |
365 |
|
head->r.w[head->r.w_pos++] = string; |
366 |
|
ccs_flush(head); |
367 |
|
} else |
368 |
|
printk(KERN_WARNING "Too many words in a line.\n"); |
369 |
|
} |
370 |
|
|
371 |
|
/** |
372 |
|
* ccs_io_printf - printf() to "struct ccs_io_buffer" structure. |
373 |
|
* |
374 |
|
* @head: Pointer to "struct ccs_io_buffer". |
375 |
|
* @fmt: The printf()'s format string, followed by parameters. |
376 |
|
* |
377 |
|
* Returns nothing. |
378 |
|
*/ |
379 |
|
void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
380 |
{ |
{ |
381 |
va_list args; |
va_list args; |
382 |
int len; |
int len; |
383 |
int pos = head->read_avail; |
int pos = head->r.avail; |
384 |
int size = head->readbuf_size - pos; |
int size = head->readbuf_size - pos; |
385 |
if (size <= 0) |
if (size <= 0) |
386 |
return false; |
return; |
387 |
va_start(args, fmt); |
va_start(args, fmt); |
388 |
len = vsnprintf(head->read_buf + pos, size, fmt, args); |
len = vsnprintf(head->read_buf + pos, size, fmt, args) + 1; |
389 |
va_end(args); |
va_end(args); |
390 |
if (pos + len >= head->readbuf_size) |
if (pos + len >= head->readbuf_size) { |
391 |
return false; |
printk(KERN_WARNING "Too many words in a line.\n"); |
392 |
head->read_avail += len; |
return; |
393 |
return true; |
} |
394 |
|
head->r.avail += len; |
395 |
|
ccs_set_string(head, head->read_buf + pos); |
396 |
} |
} |
397 |
|
|
398 |
/** |
/** |
399 |
* ccs_find_or_assign_new_profile - Create a new profile. |
* ccs_set_space - Put a space to "struct ccs_io_buffer" structure. |
400 |
|
* |
401 |
|
* @head: Pointer to "struct ccs_io_buffer". |
402 |
|
* |
403 |
|
* Returns nothing. |
404 |
|
*/ |
405 |
|
static void ccs_set_space(struct ccs_io_buffer *head) |
406 |
|
{ |
407 |
|
ccs_set_string(head, " "); |
408 |
|
} |
409 |
|
|
410 |
|
/** |
411 |
|
* ccs_set_lf - Put a line feed to "struct ccs_io_buffer" structure. |
412 |
|
* |
413 |
|
* @head: Pointer to "struct ccs_io_buffer". |
414 |
|
* |
415 |
|
* Returns nothing. |
416 |
|
*/ |
417 |
|
static bool ccs_set_lf(struct ccs_io_buffer *head) |
418 |
|
{ |
419 |
|
ccs_set_string(head, "\n"); |
420 |
|
return !head->r.w_pos; |
421 |
|
} |
422 |
|
|
423 |
|
/** |
424 |
|
* ccs_assign_profile - Create a new profile. |
425 |
* |
* |
426 |
* @profile: Profile number to create. |
* @profile: Profile number to create. |
427 |
* |
* |
428 |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
429 |
*/ |
*/ |
430 |
static struct ccs_profile *ccs_find_or_assign_new_profile(const unsigned int |
static struct ccs_profile *ccs_assign_profile(const unsigned int profile) |
|
profile) |
|
431 |
{ |
{ |
432 |
struct ccs_profile *ptr; |
struct ccs_profile *ptr; |
433 |
struct ccs_profile *entry; |
struct ccs_profile *entry; |
436 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
437 |
if (ptr) |
if (ptr) |
438 |
return ptr; |
return ptr; |
439 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
entry = kzalloc(sizeof(*entry), CCS_GFP_FLAGS); |
440 |
mutex_lock(&ccs_policy_lock); |
if (mutex_lock_interruptible(&ccs_policy_lock)) |
441 |
|
goto out; |
442 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
443 |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
444 |
ptr = entry; |
ptr = entry; |
|
ptr->audit = &ccs_default_profile.preference; |
|
|
ptr->learning = &ccs_default_profile.preference; |
|
|
ptr->permissive = &ccs_default_profile.preference; |
|
|
ptr->enforcing = &ccs_default_profile.preference; |
|
445 |
ptr->default_config = CCS_CONFIG_DISABLED | |
ptr->default_config = CCS_CONFIG_DISABLED | |
446 |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
447 |
memset(ptr->config, CCS_CONFIG_USE_DEFAULT, |
memset(ptr->config, CCS_CONFIG_USE_DEFAULT, |
448 |
sizeof(ptr->config)); |
sizeof(ptr->config)); |
449 |
|
ptr->pref[CCS_PREF_MAX_GRANT_LOG] = |
450 |
|
CONFIG_CCSECURITY_MAX_GRANT_LOG; |
451 |
|
ptr->pref[CCS_PREF_MAX_REJECT_LOG] = |
452 |
|
CONFIG_CCSECURITY_MAX_REJECT_LOG; |
453 |
|
ptr->pref[CCS_PREF_MAX_LEARNING_ENTRY] = |
454 |
|
CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY; |
455 |
mb(); /* Avoid out-of-order execution. */ |
mb(); /* Avoid out-of-order execution. */ |
456 |
ccs_profile_ptr[profile] = ptr; |
ccs_profile_ptr[profile] = ptr; |
457 |
entry = NULL; |
entry = NULL; |
458 |
} |
} |
459 |
mutex_unlock(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
460 |
|
out: |
461 |
kfree(entry); |
kfree(entry); |
462 |
return ptr; |
return ptr; |
463 |
} |
} |
464 |
|
|
465 |
/** |
/** |
466 |
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
467 |
|
* |
468 |
|
* Returns nothing. |
469 |
*/ |
*/ |
470 |
void ccs_check_profile(void) |
static void ccs_check_profile(void) |
471 |
{ |
{ |
472 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
473 |
|
const int idx = ccs_read_lock(); |
474 |
ccs_policy_loaded = true; |
ccs_policy_loaded = true; |
475 |
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
476 |
const u8 profile = domain->profile; |
const u8 profile = domain->profile; |
477 |
if (ccs_profile_ptr[profile]) |
if (ccs_profile_ptr[profile]) |
478 |
continue; |
continue; |
479 |
|
printk(KERN_ERR "You need to define profile %u before using it.\n", |
480 |
|
profile); |
481 |
|
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
482 |
|
"for more information.\n"); |
483 |
panic("Profile %u (used by '%s') not defined.\n", |
panic("Profile %u (used by '%s') not defined.\n", |
484 |
profile, domain->domainname->name); |
profile, domain->domainname->name); |
485 |
} |
} |
486 |
|
ccs_read_unlock(idx); |
487 |
|
if (ccs_profile_version != 20100903) { |
488 |
|
printk(KERN_ERR "You need to install userland programs for " |
489 |
|
"TOMOYO 1.8 and initialize policy configuration.\n"); |
490 |
|
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
491 |
|
"for more information.\n"); |
492 |
|
panic("Profile version %u is not supported.\n", |
493 |
|
ccs_profile_version); |
494 |
|
} |
495 |
|
printk(KERN_INFO "CCSecurity: 1.8.0-pre 2010/10/28\n"); |
496 |
|
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
497 |
} |
} |
498 |
|
|
499 |
/** |
/** |
505 |
*/ |
*/ |
506 |
struct ccs_profile *ccs_profile(const u8 profile) |
struct ccs_profile *ccs_profile(const u8 profile) |
507 |
{ |
{ |
508 |
|
static struct ccs_profile ccs_null_profile; |
509 |
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
510 |
if (!ccs_policy_loaded) |
if (!ptr) |
511 |
return &ccs_default_profile; |
ptr = &ccs_null_profile; |
|
BUG_ON(!ptr); |
|
512 |
return ptr; |
return ptr; |
513 |
} |
} |
514 |
|
|
515 |
/** |
/** |
516 |
* ccs_write_profile - Write profile table. |
* ccs_find_yesno - Find values for specified keyword. |
517 |
* |
* |
518 |
* @head: Pointer to "struct ccs_io_buffer". |
* @string: String to check. |
519 |
|
* @find: Name of keyword. |
520 |
* |
* |
521 |
* Returns 0 on success, negative value otherwise. |
* Returns 1 if "@find=yes" was found, 0 if "@find=no" was found, -1 otherwise. |
522 |
*/ |
*/ |
523 |
static int ccs_write_profile(struct ccs_io_buffer *head) |
static s8 ccs_find_yesno(const char *string, const char *find) |
524 |
{ |
{ |
525 |
char *data = head->write_buf; |
const char *cp = strstr(string, find); |
526 |
unsigned int i; |
if (cp) { |
527 |
int value; |
cp += strlen(find); |
528 |
int mode; |
if (!strncmp(cp, "=yes", 4)) |
529 |
u8 config; |
return 1; |
530 |
bool use_default = false; |
else if (!strncmp(cp, "=no", 3)) |
|
char *cp; |
|
|
struct ccs_profile *profile; |
|
|
i = simple_strtoul(data, &cp, 10); |
|
|
if (data == cp) { |
|
|
profile = &ccs_default_profile; |
|
|
} else { |
|
|
if (*cp != '-') |
|
|
return -EINVAL; |
|
|
data = cp + 1; |
|
|
profile = ccs_find_or_assign_new_profile(i); |
|
|
if (!profile) |
|
|
return -EINVAL; |
|
|
} |
|
|
cp = strchr(data, '='); |
|
|
if (!cp) |
|
|
return -EINVAL; |
|
|
*cp++ = '\0'; |
|
|
if (profile != &ccs_default_profile) |
|
|
use_default = strstr(cp, "use_default") != NULL; |
|
|
if (strstr(cp, "verbose=yes")) |
|
|
value = 1; |
|
|
else if (strstr(cp, "verbose=no")) |
|
|
value = 0; |
|
|
else |
|
|
value = -1; |
|
|
if (!strcmp(data, "PREFERENCE::audit")) { |
|
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
|
char *cp2; |
|
|
#endif |
|
|
if (use_default) { |
|
|
profile->audit = &ccs_default_profile.preference; |
|
|
return 0; |
|
|
} |
|
|
profile->audit = &profile->preference; |
|
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
|
cp2 = strstr(cp, "max_grant_log="); |
|
|
if (cp2) |
|
|
sscanf(cp2 + 14, "%u", |
|
|
&profile->preference.audit_max_grant_log); |
|
|
cp2 = strstr(cp, "max_reject_log="); |
|
|
if (cp2) |
|
|
sscanf(cp2 + 15, "%u", |
|
|
&profile->preference.audit_max_reject_log); |
|
|
#endif |
|
|
if (strstr(cp, "task_info=yes")) |
|
|
profile->preference.audit_task_info = true; |
|
|
else if (strstr(cp, "task_info=no")) |
|
|
profile->preference.audit_task_info = false; |
|
|
if (strstr(cp, "path_info=yes")) |
|
|
profile->preference.audit_path_info = true; |
|
|
else if (strstr(cp, "path_info=no")) |
|
|
profile->preference.audit_path_info = false; |
|
|
return 0; |
|
|
} |
|
|
if (!strcmp(data, "PREFERENCE::enforcing")) { |
|
|
char *cp2; |
|
|
if (use_default) { |
|
|
profile->enforcing = &ccs_default_profile.preference; |
|
|
return 0; |
|
|
} |
|
|
profile->enforcing = &profile->preference; |
|
|
if (value >= 0) |
|
|
profile->preference.enforcing_verbose = value; |
|
|
cp2 = strstr(cp, "penalty="); |
|
|
if (cp2) |
|
|
sscanf(cp2 + 8, "%u", |
|
|
&profile->preference.enforcing_penalty); |
|
|
return 0; |
|
|
} |
|
|
if (!strcmp(data, "PREFERENCE::permissive")) { |
|
|
if (use_default) { |
|
|
profile->permissive = &ccs_default_profile.preference; |
|
|
return 0; |
|
|
} |
|
|
profile->permissive = &profile->preference; |
|
|
if (value >= 0) |
|
|
profile->preference.permissive_verbose = value; |
|
|
return 0; |
|
|
} |
|
|
if (!strcmp(data, "PREFERENCE::learning")) { |
|
|
char *cp2; |
|
|
if (use_default) { |
|
|
profile->learning = &ccs_default_profile.preference; |
|
531 |
return 0; |
return 0; |
|
} |
|
|
profile->learning = &profile->preference; |
|
|
if (value >= 0) |
|
|
profile->preference.learning_verbose = value; |
|
|
cp2 = strstr(cp, "max_entry="); |
|
|
if (cp2) |
|
|
sscanf(cp2 + 10, "%u", |
|
|
&profile->preference.learning_max_entry); |
|
|
if (strstr(cp, "exec.realpath=yes")) |
|
|
profile->preference.learning_exec_realpath = true; |
|
|
else if (strstr(cp, "exec.realpath=no")) |
|
|
profile->preference.learning_exec_realpath = false; |
|
|
if (strstr(cp, "exec.argv0=yes")) |
|
|
profile->preference.learning_exec_argv0 = true; |
|
|
else if (strstr(cp, "exec.argv0=no")) |
|
|
profile->preference.learning_exec_argv0 = false; |
|
|
if (strstr(cp, "symlink.target=yes")) |
|
|
profile->preference.learning_symlink_target = true; |
|
|
else if (strstr(cp, "symlink.target=no")) |
|
|
profile->preference.learning_symlink_target = false; |
|
|
return 0; |
|
|
} |
|
|
if (profile == &ccs_default_profile) |
|
|
return -EINVAL; |
|
|
if (!strcmp(data, "COMMENT")) { |
|
|
const struct ccs_path_info *new_comment = ccs_get_name(cp); |
|
|
const struct ccs_path_info *old_comment; |
|
|
/* Protect reader from ccs_put_name(). */ |
|
|
spin_lock(&ccs_profile_comment_lock); |
|
|
old_comment = profile->comment; |
|
|
profile->comment = new_comment; |
|
|
spin_unlock(&ccs_profile_comment_lock); |
|
|
ccs_put_name(old_comment); |
|
|
return 0; |
|
532 |
} |
} |
533 |
if (!strcmp(data, "CONFIG")) { |
return -1; |
534 |
i = CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
} |
535 |
+ CCS_MAX_MAC_CATEGORY_INDEX; |
|
536 |
|
/** |
537 |
|
* ccs_set_uint - Set value for specified preference. |
538 |
|
* |
539 |
|
* @i: Pointer to "unsigned int". |
540 |
|
* @string: String to check. |
541 |
|
* @find: Name of keyword. |
542 |
|
* |
543 |
|
* Returns nothing. |
544 |
|
*/ |
545 |
|
static void ccs_set_uint(unsigned int *i, const char *string, const char *find) |
546 |
|
{ |
547 |
|
const char *cp = strstr(string, find); |
548 |
|
if (cp) |
549 |
|
sscanf(cp + strlen(find), "=%u", i); |
550 |
|
} |
551 |
|
|
552 |
|
/** |
553 |
|
* ccs_set_mode - Set mode for specified profile. |
554 |
|
* |
555 |
|
* @name: Name of functionality. |
556 |
|
* @value: Mode for @name. |
557 |
|
* @profile: Pointer to "struct ccs_profile". |
558 |
|
* |
559 |
|
* Returns 0 on success, negative value otherwise. |
560 |
|
*/ |
561 |
|
static int ccs_set_mode(char *name, const char *value, |
562 |
|
struct ccs_profile *profile) |
563 |
|
{ |
564 |
|
u8 i; |
565 |
|
u8 config; |
566 |
|
if (!strcmp(name, "CONFIG")) { |
567 |
|
i = CCS_MAX_MAC_INDEX + CCS_MAX_MAC_CATEGORY_INDEX; |
568 |
config = profile->default_config; |
config = profile->default_config; |
569 |
} else if (ccs_str_starts(&data, "CONFIG::")) { |
} else if (ccs_str_starts(&name, "CONFIG::")) { |
570 |
config = 0; |
config = 0; |
571 |
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_MAC_CATEGORY_INDEX; |
572 |
+ CCS_MAX_MAC_CATEGORY_INDEX; i++) { |
i++) { |
573 |
if (strcmp(data, ccs_mac_keywords[i])) |
int len = 0; |
574 |
|
if (i < CCS_MAX_MAC_INDEX) { |
575 |
|
const u8 c = ccs_index2category[i]; |
576 |
|
const char *category = |
577 |
|
ccs_category_keywords[c]; |
578 |
|
len = strlen(category); |
579 |
|
if (strncmp(name, category, len) || |
580 |
|
name[len++] != ':' || name[len++] != ':') |
581 |
|
continue; |
582 |
|
} |
583 |
|
if (strcmp(name + len, ccs_mac_keywords[i])) |
584 |
continue; |
continue; |
585 |
config = profile->config[i]; |
config = profile->config[i]; |
586 |
break; |
break; |
587 |
} |
} |
588 |
if (i == CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
if (i == CCS_MAX_MAC_INDEX + CCS_MAX_MAC_CATEGORY_INDEX) |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) |
|
589 |
return -EINVAL; |
return -EINVAL; |
590 |
} else { |
} else { |
591 |
return -EINVAL; |
return -EINVAL; |
592 |
} |
} |
593 |
if (use_default) { |
if (strstr(value, "use_default")) { |
594 |
config = CCS_CONFIG_USE_DEFAULT; |
config = CCS_CONFIG_USE_DEFAULT; |
595 |
} else { |
} else { |
596 |
for (mode = 3; mode >= 0; mode--) |
u8 mode; |
597 |
if (strstr(cp, ccs_mode_4[mode])) |
for (mode = 0; mode < CCS_CONFIG_MAX_MODE; mode++) |
598 |
|
if (strstr(value, ccs_mode[mode])) |
599 |
/* |
/* |
600 |
* Update lower 3 bits in order to distinguish |
* Update lower 3 bits in order to distinguish |
601 |
* 'config' from 'CCS_CONFIG_USE_DEAFULT'. |
* 'config' from 'CCS_CONFIG_USE_DEAFULT'. |
602 |
*/ |
*/ |
603 |
config = (config & ~7) | mode; |
config = (config & ~7) | mode; |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
604 |
if (config != CCS_CONFIG_USE_DEFAULT) { |
if (config != CCS_CONFIG_USE_DEFAULT) { |
605 |
if (strstr(cp, "grant_log=yes")) |
switch (ccs_find_yesno(value, "grant_log")) { |
606 |
|
case 1: |
607 |
config |= CCS_CONFIG_WANT_GRANT_LOG; |
config |= CCS_CONFIG_WANT_GRANT_LOG; |
608 |
else if (strstr(cp, "grant_log=no")) |
break; |
609 |
|
case 0: |
610 |
config &= ~CCS_CONFIG_WANT_GRANT_LOG; |
config &= ~CCS_CONFIG_WANT_GRANT_LOG; |
611 |
if (strstr(cp, "reject_log=yes")) |
break; |
612 |
|
} |
613 |
|
switch (ccs_find_yesno(value, "reject_log")) { |
614 |
|
case 1: |
615 |
config |= CCS_CONFIG_WANT_REJECT_LOG; |
config |= CCS_CONFIG_WANT_REJECT_LOG; |
616 |
else if (strstr(cp, "reject_log=no")) |
break; |
617 |
|
case 0: |
618 |
config &= ~CCS_CONFIG_WANT_REJECT_LOG; |
config &= ~CCS_CONFIG_WANT_REJECT_LOG; |
619 |
|
break; |
620 |
|
} |
621 |
} |
} |
|
#endif |
|
622 |
} |
} |
623 |
if (i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
if (i < CCS_MAX_MAC_INDEX + CCS_MAX_MAC_CATEGORY_INDEX) |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) |
|
624 |
profile->config[i] = config; |
profile->config[i] = config; |
625 |
else if (config != CCS_CONFIG_USE_DEFAULT) |
else if (config != CCS_CONFIG_USE_DEFAULT) |
626 |
profile->default_config = config; |
profile->default_config = config; |
628 |
} |
} |
629 |
|
|
630 |
/** |
/** |
631 |
|
* ccs_write_profile - Write profile table. |
632 |
|
* |
633 |
|
* @head: Pointer to "struct ccs_io_buffer". |
634 |
|
* |
635 |
|
* Returns 0 on success, negative value otherwise. |
636 |
|
*/ |
637 |
|
static int ccs_write_profile(struct ccs_io_buffer *head) |
638 |
|
{ |
639 |
|
char *data = head->write_buf; |
640 |
|
unsigned int i; |
641 |
|
char *cp; |
642 |
|
struct ccs_profile *profile; |
643 |
|
if (sscanf(data, "PROFILE_VERSION=%u", &ccs_profile_version) == 1) |
644 |
|
return 0; |
645 |
|
i = simple_strtoul(data, &cp, 10); |
646 |
|
if (*cp != '-') |
647 |
|
return -EINVAL; |
648 |
|
data = cp + 1; |
649 |
|
profile = ccs_assign_profile(i); |
650 |
|
if (!profile) |
651 |
|
return -EINVAL; |
652 |
|
cp = strchr(data, '='); |
653 |
|
if (!cp) |
654 |
|
return -EINVAL; |
655 |
|
*cp++ = '\0'; |
656 |
|
if (!strcmp(data, "COMMENT")) { |
657 |
|
const struct ccs_path_info *old_comment = profile->comment; |
658 |
|
profile->comment = ccs_get_name(cp); |
659 |
|
ccs_put_name(old_comment); |
660 |
|
return 0; |
661 |
|
} |
662 |
|
if (!strcmp(data, "PREFERENCE")) { |
663 |
|
for (i = 0; i < CCS_MAX_PREF; i++) |
664 |
|
ccs_set_uint(&profile->pref[i], cp, |
665 |
|
ccs_pref_keywords[i]); |
666 |
|
return 0; |
667 |
|
} |
668 |
|
return ccs_set_mode(data, cp, profile); |
669 |
|
} |
670 |
|
|
671 |
|
/** |
672 |
|
* ccs_print_config - Print mode for specified functionality. |
673 |
|
* |
674 |
|
* @head: Pointer to "struct ccs_io_buffer". |
675 |
|
* @config: Mode for that functionality. |
676 |
|
* |
677 |
|
* Returns nothing. |
678 |
|
* |
679 |
|
* Caller prints functionality's name. |
680 |
|
*/ |
681 |
|
static void ccs_print_config(struct ccs_io_buffer *head, const u8 config) |
682 |
|
{ |
683 |
|
ccs_io_printf(head, "={ mode=%s grant_log=%s reject_log=%s }\n", |
684 |
|
ccs_mode[config & 3], |
685 |
|
ccs_yesno(config & CCS_CONFIG_WANT_GRANT_LOG), |
686 |
|
ccs_yesno(config & CCS_CONFIG_WANT_REJECT_LOG)); |
687 |
|
} |
688 |
|
|
689 |
|
/** |
690 |
* ccs_read_profile - Read profile table. |
* ccs_read_profile - Read profile table. |
691 |
* |
* |
692 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
693 |
|
* |
694 |
|
* Returns nothing. |
695 |
*/ |
*/ |
696 |
static void ccs_read_profile(struct ccs_io_buffer *head) |
static void ccs_read_profile(struct ccs_io_buffer *head) |
697 |
{ |
{ |
698 |
int index; |
u8 index; |
699 |
if (head->read_eof) |
const struct ccs_profile *profile; |
700 |
return; |
next: |
701 |
if (head->read_bit) |
index = head->r.index; |
702 |
goto body; |
profile = ccs_profile_ptr[index]; |
703 |
ccs_io_printf(head, "PROFILE_VERSION=%s\n", "20090903"); |
switch (head->r.step) { |
704 |
ccs_io_printf(head, "PREFERENCE::audit={ " |
case 0: |
705 |
#ifdef CONFIG_CCSECURITY_AUDIT |
ccs_io_printf(head, "PROFILE_VERSION=%s\n", "20100903"); |
706 |
"max_grant_log=%u max_reject_log=%u " |
head->r.step++; |
707 |
#endif |
break; |
708 |
"task_info=%s path_info=%s }\n", |
case 1: |
709 |
#ifdef CONFIG_CCSECURITY_AUDIT |
for ( ; head->r.index < CCS_MAX_PROFILES; |
710 |
ccs_default_profile.preference.audit_max_grant_log, |
head->r.index++) |
711 |
ccs_default_profile.preference.audit_max_reject_log, |
if (ccs_profile_ptr[head->r.index]) |
712 |
#endif |
break; |
713 |
ccs_yesno(ccs_default_profile.preference. |
if (head->r.index == CCS_MAX_PROFILES) |
714 |
audit_task_info), |
return; |
715 |
ccs_yesno(ccs_default_profile.preference. |
head->r.step++; |
716 |
audit_path_info)); |
break; |
717 |
ccs_io_printf(head, "PREFERENCE::learning={ verbose=%s max_entry=%u " |
case 2: |
718 |
"exec.realpath=%s exec.argv0=%s symlink.target=%s }\n", |
{ |
719 |
ccs_yesno(ccs_default_profile.preference. |
u8 i; |
720 |
learning_verbose), |
const struct ccs_path_info *comment = profile->comment; |
721 |
ccs_default_profile.preference.learning_max_entry, |
ccs_io_printf(head, "%u-COMMENT=", index); |
722 |
ccs_yesno(ccs_default_profile.preference. |
ccs_set_string(head, comment ? comment->name : ""); |
723 |
learning_exec_realpath), |
ccs_set_lf(head); |
724 |
ccs_yesno(ccs_default_profile.preference. |
ccs_io_printf(head, "%u-PREFERENCE={ ", index); |
725 |
learning_exec_argv0), |
for (i = 0; i < CCS_MAX_PREF; i++) |
726 |
ccs_yesno(ccs_default_profile.preference. |
ccs_io_printf(head, "%s=%u ", |
727 |
learning_symlink_target)); |
ccs_pref_keywords[i], |
728 |
ccs_io_printf(head, "PREFERENCE::permissive={ verbose=%s }\n", |
profile->pref[i]); |
729 |
ccs_yesno(ccs_default_profile.preference. |
ccs_set_string(head, " }\n"); |
730 |
permissive_verbose)); |
head->r.step++; |
731 |
ccs_io_printf(head, "PREFERENCE::enforcing={ verbose=%s penalty=%u " |
} |
732 |
"}\n", |
break; |
733 |
ccs_yesno(ccs_default_profile.preference. |
case 3: |
734 |
enforcing_verbose), |
{ |
735 |
ccs_default_profile.preference.enforcing_penalty); |
ccs_io_printf(head, "%u-%s", index, "CONFIG"); |
736 |
head->read_bit = 1; |
ccs_print_config(head, profile->default_config); |
737 |
body: |
head->r.bit = 0; |
738 |
for (index = head->read_step; index < CCS_MAX_PROFILES; index++) { |
head->r.step++; |
739 |
bool done; |
} |
740 |
u8 config; |
break; |
741 |
int i; |
case 4: |
742 |
int pos; |
for ( ; head->r.bit < CCS_MAX_MAC_INDEX |
743 |
const struct ccs_profile *profile = ccs_profile_ptr[index]; |
+ CCS_MAX_MAC_CATEGORY_INDEX; head->r.bit++) { |
744 |
head->read_step = index; |
const u8 i = head->r.bit; |
745 |
if (!profile) |
const u8 config = profile->config[i]; |
|
continue; |
|
|
pos = head->read_avail; |
|
|
spin_lock(&ccs_profile_comment_lock); |
|
|
done = ccs_io_printf(head, "%u-COMMENT=%s\n", index, |
|
|
profile->comment ? profile->comment->name |
|
|
: ""); |
|
|
spin_unlock(&ccs_profile_comment_lock); |
|
|
if (!done) |
|
|
goto out; |
|
|
config = profile->default_config; |
|
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
|
if (!ccs_io_printf(head, "%u-CONFIG={ mode=%s grant_log=%s " |
|
|
"reject_log=%s }\n", index, |
|
|
ccs_mode_4[config & 3], |
|
|
ccs_yesno(config & |
|
|
CCS_CONFIG_WANT_GRANT_LOG), |
|
|
ccs_yesno(config & |
|
|
CCS_CONFIG_WANT_REJECT_LOG))) |
|
|
goto out; |
|
|
#else |
|
|
if (!ccs_io_printf(head, "%u-CONFIG={ mode=%s }\n", index, |
|
|
ccs_mode_4[config & 3])) |
|
|
goto out; |
|
|
#endif |
|
|
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
|
|
+ CCS_MAX_MAC_CATEGORY_INDEX; i++) { |
|
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
|
const char *g; |
|
|
const char *r; |
|
|
#endif |
|
|
config = profile->config[i]; |
|
746 |
if (config == CCS_CONFIG_USE_DEFAULT) |
if (config == CCS_CONFIG_USE_DEFAULT) |
747 |
continue; |
continue; |
748 |
#ifdef CONFIG_CCSECURITY_AUDIT |
if (i < CCS_MAX_MAC_INDEX) |
749 |
g = ccs_yesno(config & CCS_CONFIG_WANT_GRANT_LOG); |
ccs_io_printf(head, "%u-CONFIG::%s::%s", index, |
750 |
r = ccs_yesno(config & CCS_CONFIG_WANT_REJECT_LOG); |
ccs_category_keywords |
751 |
if (!ccs_io_printf(head, "%u-CONFIG::%s={ mode=%s " |
[ccs_index2category[i]], |
752 |
"grant_log=%s reject_log=%s }\n", |
ccs_mac_keywords[i]); |
753 |
index, ccs_mac_keywords[i], |
else |
754 |
ccs_mode_4[config & 3], g, r)) |
ccs_io_printf(head, "%u-CONFIG::%s", index, |
755 |
goto out; |
ccs_mac_keywords[i]); |
756 |
#else |
ccs_print_config(head, config); |
757 |
if (!ccs_io_printf(head, "%u-CONFIG::%s={ mode=%s }\n", |
head->r.bit++; |
758 |
index, ccs_mac_keywords[i], |
break; |
759 |
ccs_mode_4[config & 3])) |
} |
760 |
goto out; |
if (head->r.bit == CCS_MAX_MAC_INDEX |
761 |
#endif |
+ CCS_MAX_MAC_CATEGORY_INDEX) { |
762 |
|
head->r.index++; |
763 |
|
head->r.step = 1; |
764 |
} |
} |
|
if (profile->audit != &ccs_default_profile.preference && |
|
|
!ccs_io_printf(head, "%u-PREFERENCE::audit={ " |
|
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
|
"max_grant_log=%u max_reject_log=%u " |
|
|
#endif |
|
|
"task_info=%s path_info=%s }\n", index, |
|
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
|
profile->preference.audit_max_grant_log, |
|
|
profile->preference.audit_max_reject_log, |
|
|
#endif |
|
|
ccs_yesno(profile->preference. |
|
|
audit_task_info), |
|
|
ccs_yesno(profile->preference. |
|
|
audit_path_info))) |
|
|
goto out; |
|
|
if (profile->learning != &ccs_default_profile.preference && |
|
|
!ccs_io_printf(head, "%u-PREFERENCE::learning={ " |
|
|
"verbose=%s max_entry=%u exec.realpath=%s " |
|
|
"exec.argv0=%s symlink.target=%s }\n", |
|
|
index, |
|
|
ccs_yesno(profile->preference. |
|
|
learning_verbose), |
|
|
profile->preference.learning_max_entry, |
|
|
ccs_yesno(profile->preference. |
|
|
learning_exec_realpath), |
|
|
ccs_yesno(profile->preference. |
|
|
learning_exec_argv0), |
|
|
ccs_yesno(profile->preference. |
|
|
learning_symlink_target))) |
|
|
goto out; |
|
|
if (profile->permissive != &ccs_default_profile.preference && |
|
|
!ccs_io_printf(head, "%u-PREFERENCE::permissive={ " |
|
|
"verbose=%s }\n", index, |
|
|
ccs_yesno(profile->preference. |
|
|
permissive_verbose))) |
|
|
goto out; |
|
|
if (profile->enforcing != &ccs_default_profile.preference && |
|
|
!ccs_io_printf(head, "%u-PREFERENCE::enforcing={ " |
|
|
"verbose=%s penalty=%u }\n", index, |
|
|
ccs_yesno(profile->preference. |
|
|
enforcing_verbose), |
|
|
profile->preference.enforcing_penalty)) |
|
|
goto out; |
|
|
continue; |
|
|
out: |
|
|
head->read_avail = pos; |
|
765 |
break; |
break; |
766 |
} |
} |
767 |
if (index == CCS_MAX_PROFILES) |
if (ccs_flush(head)) |
768 |
head->read_eof = true; |
goto next; |
769 |
} |
} |
770 |
|
|
771 |
/* The list for "struct ccs_policy_manager_entry". */ |
/** |
772 |
LIST_HEAD(ccs_policy_manager_list); |
* ccs_same_manager - Check for duplicated "struct ccs_manager" entry. |
773 |
|
* |
774 |
|
* @a: Pointer to "struct ccs_acl_head". |
775 |
|
* @b: Pointer to "struct ccs_acl_head". |
776 |
|
* |
777 |
|
* Returns true if @a == @b, false otherwise. |
778 |
|
*/ |
779 |
|
static bool ccs_same_manager(const struct ccs_acl_head *a, |
780 |
|
const struct ccs_acl_head *b) |
781 |
|
{ |
782 |
|
return container_of(a, struct ccs_manager, head)->manager |
783 |
|
== container_of(b, struct ccs_manager, head)->manager; |
784 |
|
} |
785 |
|
|
786 |
/** |
/** |
787 |
* ccs_update_manager_entry - Add a manager entry. |
* ccs_update_manager_entry - Add a manager entry. |
793 |
*/ |
*/ |
794 |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
795 |
{ |
{ |
796 |
struct ccs_policy_manager_entry *entry = NULL; |
struct ccs_manager e = { }; |
|
struct ccs_policy_manager_entry *ptr; |
|
|
struct ccs_policy_manager_entry e = { }; |
|
797 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
798 |
if (ccs_is_domain_def(manager)) { |
if (ccs_domain_def(manager)) { |
799 |
if (!ccs_is_correct_domain(manager)) |
if (!ccs_correct_domain(manager)) |
800 |
return -EINVAL; |
return -EINVAL; |
801 |
e.is_domain = true; |
e.is_domain = true; |
802 |
} else { |
} else { |
803 |
if (!ccs_is_correct_path(manager, 1, -1, -1)) |
if (!ccs_correct_path(manager)) |
804 |
return -EINVAL; |
return -EINVAL; |
805 |
} |
} |
806 |
e.manager = ccs_get_name(manager); |
e.manager = ccs_get_name(manager); |
807 |
if (!e.manager) |
if (!e.manager) |
808 |
return -ENOMEM; |
return error; |
809 |
if (!is_delete) |
error = ccs_update_policy(&e.head, sizeof(e), is_delete, |
810 |
entry = kmalloc(sizeof(e), GFP_KERNEL); |
&ccs_policy_list[CCS_ID_MANAGER], |
811 |
mutex_lock(&ccs_policy_lock); |
ccs_same_manager); |
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
|
|
if (ptr->manager != e.manager) |
|
|
continue; |
|
|
ptr->is_deleted = is_delete; |
|
|
error = 0; |
|
|
break; |
|
|
} |
|
|
if (!is_delete && error && ccs_commit_ok(entry, &e, sizeof(e))) { |
|
|
list_add_tail_rcu(&entry->list, &ccs_policy_manager_list); |
|
|
entry = NULL; |
|
|
error = 0; |
|
|
} |
|
|
mutex_unlock(&ccs_policy_lock); |
|
812 |
ccs_put_name(e.manager); |
ccs_put_name(e.manager); |
|
kfree(entry); |
|
813 |
return error; |
return error; |
814 |
} |
} |
815 |
|
|
816 |
/** |
/** |
817 |
* ccs_write_manager_policy - Write manager policy. |
* ccs_write_manager - Write manager policy. |
818 |
* |
* |
819 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
820 |
* |
* |
821 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
822 |
*/ |
*/ |
823 |
static int ccs_write_manager_policy(struct ccs_io_buffer *head) |
static int ccs_write_manager(struct ccs_io_buffer *head) |
824 |
{ |
{ |
825 |
char *data = head->write_buf; |
char *data = head->write_buf; |
826 |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
bool is_delete = ccs_str_starts(&data, "delete "); |
827 |
if (!strcmp(data, "manage_by_non_root")) { |
if (!strcmp(data, "manage_by_non_root")) { |
828 |
ccs_manage_by_non_root = !is_delete; |
ccs_manage_by_non_root = !is_delete; |
829 |
return 0; |
return 0; |
832 |
} |
} |
833 |
|
|
834 |
/** |
/** |
835 |
* ccs_read_manager_policy - Read manager policy. |
* ccs_read_manager - Read manager policy. |
836 |
* |
* |
837 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
838 |
* |
* |
839 |
|
* Returns nothing. |
840 |
|
* |
841 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
842 |
*/ |
*/ |
843 |
static void ccs_read_manager_policy(struct ccs_io_buffer *head) |
static void ccs_read_manager(struct ccs_io_buffer *head) |
844 |
{ |
{ |
845 |
struct list_head *pos; |
if (head->r.eof) |
|
if (head->read_eof) |
|
846 |
return; |
return; |
847 |
list_for_each_cookie(pos, head->read_var2, &ccs_policy_manager_list) { |
list_for_each_cookie(head->r.acl, &ccs_policy_list[CCS_ID_MANAGER]) { |
848 |
struct ccs_policy_manager_entry *ptr; |
struct ccs_manager *ptr = |
849 |
ptr = list_entry(pos, struct ccs_policy_manager_entry, list); |
list_entry(head->r.acl, typeof(*ptr), head.list); |
850 |
if (ptr->is_deleted) |
if (ptr->head.is_deleted) |
851 |
continue; |
continue; |
852 |
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
if (!ccs_flush(head)) |
853 |
return; |
return; |
854 |
|
ccs_set_string(head, ptr->manager->name); |
855 |
|
ccs_set_lf(head); |
856 |
} |
} |
857 |
head->read_eof = true; |
head->r.eof = true; |
858 |
} |
} |
859 |
|
|
860 |
/** |
/** |
861 |
* ccs_is_policy_manager - Check whether the current process is a policy manager. |
* ccs_manager - Check whether the current process is a policy manager. |
862 |
* |
* |
863 |
* Returns true if the current process is permitted to modify policy |
* Returns true if the current process is permitted to modify policy |
864 |
* via /proc/ccs/ interface. |
* via /proc/ccs/ interface. |
865 |
* |
* |
866 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
867 |
*/ |
*/ |
868 |
static bool ccs_is_policy_manager(void) |
static bool ccs_manager(void) |
869 |
{ |
{ |
870 |
struct ccs_policy_manager_entry *ptr; |
struct ccs_manager *ptr; |
871 |
const char *exe; |
const char *exe; |
872 |
struct task_struct *task = current; |
struct ccs_security *task = ccs_current_security(); |
873 |
const struct ccs_path_info *domainname |
const struct ccs_path_info *domainname |
874 |
= ccs_current_domain()->domainname; |
= ccs_current_domain()->domainname; |
875 |
bool found = false; |
bool found = false; |
876 |
if (!ccs_policy_loaded) |
if (!ccs_policy_loaded) |
877 |
return true; |
return true; |
878 |
if (task->ccs_flags & CCS_TASK_IS_POLICY_MANAGER) |
if (task->ccs_flags & CCS_TASK_IS_MANAGER) |
879 |
return true; |
return true; |
880 |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
881 |
return false; |
return false; |
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
|
|
if (!ptr->is_deleted && ptr->is_domain |
|
|
&& !ccs_pathcmp(domainname, ptr->manager)) { |
|
|
/* Set manager flag. */ |
|
|
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
|
|
return true; |
|
|
} |
|
|
} |
|
882 |
exe = ccs_get_exe(); |
exe = ccs_get_exe(); |
883 |
if (!exe) |
list_for_each_entry_srcu(ptr, &ccs_policy_list[CCS_ID_MANAGER], |
884 |
return false; |
head.list, &ccs_ss) { |
885 |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
if (ptr->head.is_deleted) |
886 |
if (!ptr->is_deleted && !ptr->is_domain |
continue; |
887 |
&& !strcmp(exe, ptr->manager->name)) { |
if (ptr->is_domain) { |
888 |
found = true; |
if (ccs_pathcmp(domainname, ptr->manager)) |
889 |
/* Set manager flag. */ |
continue; |
890 |
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
} else { |
891 |
break; |
if (!exe || strcmp(exe, ptr->manager->name)) |
892 |
|
continue; |
893 |
} |
} |
894 |
|
/* Set manager flag. */ |
895 |
|
task->ccs_flags |= CCS_TASK_IS_MANAGER; |
896 |
|
found = true; |
897 |
|
break; |
898 |
} |
} |
899 |
if (!found) { /* Reduce error messages. */ |
if (!found) { /* Reduce error messages. */ |
900 |
static pid_t ccs_last_pid; |
static pid_t ccs_last_pid; |
910 |
} |
} |
911 |
|
|
912 |
/** |
/** |
913 |
* ccs_find_condition_part - Find condition part from the statement. |
* ccs_select_one - Parse select command. |
|
* |
|
|
* @data: String to parse. |
|
|
* |
|
|
* Returns pointer to the condition part if it was found in the statement, |
|
|
* NULL otherwise. |
|
|
*/ |
|
|
static char *ccs_find_condition_part(char *data) |
|
|
{ |
|
|
char *cp = strstr(data, " if "); |
|
|
if (cp) { |
|
|
while (1) { |
|
|
char *cp2 = strstr(cp + 3, " if "); |
|
|
if (!cp2) |
|
|
break; |
|
|
cp = cp2; |
|
|
} |
|
|
*cp++ = '\0'; |
|
|
} else { |
|
|
cp = strstr(data, " ; set "); |
|
|
if (cp) |
|
|
*cp++ = '\0'; |
|
|
} |
|
|
return cp; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_is_select_one - Parse select command. |
|
914 |
* |
* |
915 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
916 |
* @data: String to parse. |
* @data: String to parse. |
919 |
* |
* |
920 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
921 |
*/ |
*/ |
922 |
static bool ccs_is_select_one(struct ccs_io_buffer *head, const char *data) |
static bool ccs_select_one(struct ccs_io_buffer *head, const char *data) |
923 |
{ |
{ |
924 |
unsigned int pid; |
unsigned int pid; |
925 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
926 |
bool global_pid = false; |
bool global_pid = false; |
927 |
if (!strcmp(data, "allow_execute")) { |
if (!strcmp(data, "execute")) { |
928 |
head->read_execute_only = true; |
head->r.print_execute_only = true; |
929 |
return true; |
return true; |
930 |
} |
} |
931 |
if (sscanf(data, "pid=%u", &pid) == 1 || |
if (sscanf(data, "pid=%u", &pid) == 1 || |
932 |
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
933 |
struct task_struct *p; |
struct task_struct *p; |
934 |
read_lock(&tasklist_lock); |
ccs_tasklist_lock(); |
935 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
936 |
if (global_pid) |
if (global_pid) |
937 |
p = find_task_by_pid_ns(pid, &init_pid_ns); |
p = ccsecurity_exports.find_task_by_pid_ns(pid, |
938 |
|
&init_pid_ns); |
939 |
else |
else |
940 |
p = find_task_by_vpid(pid); |
p = ccsecurity_exports.find_task_by_vpid(pid); |
941 |
#else |
#else |
942 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
943 |
#endif |
#endif |
944 |
if (p) |
if (p) |
945 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
946 |
read_unlock(&tasklist_lock); |
ccs_tasklist_unlock(); |
947 |
} else if (!strncmp(data, "domain=", 7)) { |
} else if (!strncmp(data, "domain=", 7)) { |
948 |
if (ccs_is_domain_def(data + 7)) |
if (ccs_domain_def(data + 7)) |
949 |
domain = ccs_find_domain(data + 7); |
domain = ccs_find_domain(data + 7); |
950 |
} else |
} else |
951 |
return false; |
return false; |
952 |
head->write_var1 = domain; |
head->w.domain = domain; |
953 |
/* Accessing read_buf is safe because head->io_sem is held. */ |
/* Accessing read_buf is safe because head->io_sem is held. */ |
954 |
if (!head->read_buf) |
if (!head->read_buf) |
955 |
return true; /* Do nothing if open(O_WRONLY). */ |
return true; /* Do nothing if open(O_WRONLY). */ |
956 |
head->read_avail = 0; |
memset(&head->r, 0, sizeof(head->r)); |
957 |
|
head->r.print_this_domain_only = true; |
958 |
|
if (domain) |
959 |
|
head->r.domain = &domain->list; |
960 |
|
else |
961 |
|
head->r.eof = true; |
962 |
ccs_io_printf(head, "# select %s\n", data); |
ccs_io_printf(head, "# select %s\n", data); |
963 |
head->read_single_domain = true; |
if (domain && domain->is_deleted) |
964 |
head->read_eof = !domain; |
ccs_set_string(head, "# This is a deleted domain.\n"); |
|
if (domain) { |
|
|
struct ccs_domain_info *d; |
|
|
head->read_var1 = NULL; |
|
|
list_for_each_entry_rcu(d, &ccs_domain_list, list) { |
|
|
if (d == domain) |
|
|
break; |
|
|
head->read_var1 = &d->list; |
|
|
} |
|
|
head->read_var2 = NULL; |
|
|
head->read_bit = 0; |
|
|
head->read_step = 0; |
|
|
if (domain->is_deleted) |
|
|
ccs_io_printf(head, "# This is a deleted domain.\n"); |
|
|
} |
|
965 |
return true; |
return true; |
966 |
} |
} |
967 |
|
|
968 |
static int ccs_write_domain_policy2(char *data, struct ccs_domain_info *domain, |
/** |
969 |
struct ccs_condition *cond, |
* ccs_same_handler_acl - Check for duplicated "struct ccs_handler_acl" entry. |
970 |
const bool is_delete) |
* |
971 |
{ |
* @a: Pointer to "struct ccs_acl_info". |
972 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_CAPABILITY)) |
* @b: Pointer to "struct ccs_acl_info". |
973 |
return ccs_write_capability_policy(data, domain, cond, |
* |
974 |
is_delete); |
* Returns true if @a == @b, false otherwise. |
975 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_NETWORK)) |
*/ |
976 |
return ccs_write_network_policy(data, domain, cond, is_delete); |
static bool ccs_same_handler_acl(const struct ccs_acl_info *a, |
977 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_SIGNAL)) |
const struct ccs_acl_info *b) |
978 |
return ccs_write_signal_policy(data, domain, cond, is_delete); |
{ |
979 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_ENV)) |
const struct ccs_handler_acl *p1 = container_of(a, typeof(*p1), head); |
980 |
return ccs_write_env_policy(data, domain, cond, is_delete); |
const struct ccs_handler_acl *p2 = container_of(b, typeof(*p2), head); |
981 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_MOUNT)) |
return p1->handler == p2->handler; |
982 |
return ccs_write_mount_policy(data, domain, cond, is_delete); |
} |
983 |
return ccs_write_file_policy(data, domain, cond, is_delete); |
|
984 |
|
/** |
985 |
|
* ccs_same_task_acl - Check for duplicated "struct ccs_task_acl" entry. |
986 |
|
* |
987 |
|
* @a: Pointer to "struct ccs_acl_info". |
988 |
|
* @b: Pointer to "struct ccs_acl_info". |
989 |
|
* |
990 |
|
* Returns true if @a == @b, false otherwise. |
991 |
|
*/ |
992 |
|
static bool ccs_same_task_acl(const struct ccs_acl_info *a, |
993 |
|
const struct ccs_acl_info *b) |
994 |
|
{ |
995 |
|
const struct ccs_task_acl *p1 = container_of(a, typeof(*p1), head); |
996 |
|
const struct ccs_task_acl *p2 = container_of(b, typeof(*p2), head); |
997 |
|
return p1->domainname == p2->domainname; |
998 |
|
} |
999 |
|
|
1000 |
|
/** |
1001 |
|
* ccs_write_task - Update task related list. |
1002 |
|
* |
1003 |
|
* @param: Pointer to "struct ccs_acl_param". |
1004 |
|
* |
1005 |
|
* Returns 0 on success, negative value otherwise. |
1006 |
|
*/ |
1007 |
|
static int ccs_write_task(struct ccs_acl_param *param) |
1008 |
|
{ |
1009 |
|
int error; |
1010 |
|
const bool is_auto = ccs_str_starts(¶m->data, |
1011 |
|
"auto_domain_transition "); |
1012 |
|
if (!is_auto && !ccs_str_starts(¶m->data, |
1013 |
|
"manual_domain_transition ")) { |
1014 |
|
struct ccs_handler_acl e = { }; |
1015 |
|
char *handler; |
1016 |
|
if (ccs_str_starts(¶m->data, "auto_execute_handler ")) |
1017 |
|
e.head.type = CCS_TYPE_AUTO_EXECUTE_HANDLER; |
1018 |
|
else if (ccs_str_starts(¶m->data, |
1019 |
|
"denied_execute_handler ")) |
1020 |
|
e.head.type = CCS_TYPE_DENIED_EXECUTE_HANDLER; |
1021 |
|
else |
1022 |
|
return -EINVAL; |
1023 |
|
handler = ccs_read_token(param); |
1024 |
|
if (!ccs_correct_path(handler)) |
1025 |
|
return -EINVAL; |
1026 |
|
e.handler = ccs_get_name(handler); |
1027 |
|
if (!e.handler) |
1028 |
|
return -ENOMEM; |
1029 |
|
if (e.handler->is_patterned) |
1030 |
|
error = -EINVAL; /* No patterns allowed. */ |
1031 |
|
else |
1032 |
|
error = ccs_update_domain(&e.head, sizeof(e), param, |
1033 |
|
ccs_same_handler_acl, NULL); |
1034 |
|
ccs_put_name(e.handler); |
1035 |
|
} else { |
1036 |
|
struct ccs_task_acl e = { |
1037 |
|
.head.type = is_auto ? |
1038 |
|
CCS_TYPE_AUTO_TASK_ACL : CCS_TYPE_MANUAL_TASK_ACL, |
1039 |
|
.domainname = ccs_get_domainname(param), |
1040 |
|
}; |
1041 |
|
if (!e.domainname) |
1042 |
|
error = -EINVAL; |
1043 |
|
else |
1044 |
|
error = ccs_update_domain(&e.head, sizeof(e), param, |
1045 |
|
ccs_same_task_acl, NULL); |
1046 |
|
ccs_put_name(e.domainname); |
1047 |
|
} |
1048 |
|
return error; |
1049 |
|
} |
1050 |
|
|
1051 |
|
/** |
1052 |
|
* ccs_write_domain2 - Write domain policy. |
1053 |
|
* |
1054 |
|
* @data: Policy to be interpreted. |
1055 |
|
* @domain: Pointer to "struct ccs_domain_info". |
1056 |
|
* @is_delete: True if it is a delete request. |
1057 |
|
* |
1058 |
|
* Returns 0 on success, negative value otherwise. |
1059 |
|
*/ |
1060 |
|
static int ccs_write_domain2(char *data, struct ccs_domain_info *domain, |
1061 |
|
const bool is_delete) |
1062 |
|
{ |
1063 |
|
struct ccs_acl_param param = { |
1064 |
|
.data = data, |
1065 |
|
.domain = domain, |
1066 |
|
.is_delete = is_delete, |
1067 |
|
}; |
1068 |
|
static const struct { |
1069 |
|
const char *keyword; |
1070 |
|
int (*write) (struct ccs_acl_param *); |
1071 |
|
} ccs_callback[7] = { |
1072 |
|
{ "file ", ccs_write_file }, |
1073 |
|
{ "network inet ", ccs_write_inet_network }, |
1074 |
|
{ "network unix ", ccs_write_unix_network }, |
1075 |
|
{ "misc ", ccs_write_misc }, |
1076 |
|
{ "capability ", ccs_write_capability }, |
1077 |
|
{ "ipc ", ccs_write_ipc }, |
1078 |
|
{ "task ", ccs_write_task }, |
1079 |
|
}; |
1080 |
|
u8 i; |
1081 |
|
for (i = 0; i < 7; i++) { |
1082 |
|
if (!ccs_str_starts(¶m.data, ccs_callback[i].keyword)) |
1083 |
|
continue; |
1084 |
|
return ccs_callback[i].write(¶m); |
1085 |
|
} |
1086 |
|
return -EINVAL; |
1087 |
} |
} |
1088 |
|
|
1089 |
|
/* String table for domain flags. */ |
1090 |
|
const char * const ccs_dif[CCS_MAX_DOMAIN_INFO_FLAGS] = { |
1091 |
|
[CCS_DIF_QUOTA_WARNED] = "quota_exceeded\n", |
1092 |
|
[CCS_DIF_TRANSITION_FAILED] = "transition_failed\n", |
1093 |
|
}; |
1094 |
|
|
1095 |
/** |
/** |
1096 |
* ccs_write_domain_policy - Write domain policy. |
* ccs_write_domain - Write domain policy. |
1097 |
* |
* |
1098 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1099 |
* |
* |
1100 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1101 |
*/ |
*/ |
1102 |
static int ccs_write_domain_policy(struct ccs_io_buffer *head) |
static int ccs_write_domain(struct ccs_io_buffer *head) |
1103 |
{ |
{ |
1104 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1105 |
struct ccs_domain_info *domain = head->write_var1; |
struct ccs_domain_info *domain = head->w.domain; |
1106 |
bool is_delete = false; |
bool is_delete = false; |
1107 |
bool is_select = false; |
bool is_select = false; |
1108 |
unsigned int profile; |
unsigned int profile; |
1109 |
struct ccs_condition *cond = NULL; |
if (ccs_str_starts(&data, "delete ")) |
|
char *cp; |
|
|
int error; |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_DELETE)) |
|
1110 |
is_delete = true; |
is_delete = true; |
1111 |
else if (ccs_str_starts(&data, CCS_KEYWORD_SELECT)) |
else if (ccs_str_starts(&data, "select ")) |
1112 |
is_select = true; |
is_select = true; |
1113 |
if (is_select && ccs_is_select_one(head, data)) |
if (is_select && ccs_select_one(head, data)) |
1114 |
return 0; |
return 0; |
1115 |
/* Don't allow updating policies by non manager programs. */ |
/* Don't allow updating policies by non manager programs. */ |
1116 |
if (!ccs_is_policy_manager()) |
if (!ccs_manager()) |
1117 |
return -EPERM; |
return -EPERM; |
1118 |
if (ccs_is_domain_def(data)) { |
if (ccs_domain_def(data)) { |
1119 |
domain = NULL; |
domain = NULL; |
1120 |
if (is_delete) |
if (is_delete) |
1121 |
ccs_delete_domain(data); |
ccs_delete_domain(data); |
1122 |
else if (is_select) |
else if (is_select) |
1123 |
domain = ccs_find_domain(data); |
domain = ccs_find_domain(data); |
1124 |
else |
else |
1125 |
domain = ccs_find_or_assign_new_domain(data, 0); |
domain = ccs_assign_domain(data, 0, 0, false); |
1126 |
head->write_var1 = domain; |
head->w.domain = domain; |
1127 |
return 0; |
return 0; |
1128 |
} |
} |
1129 |
if (!domain) |
if (!domain) |
1130 |
return -EINVAL; |
return -EINVAL; |
1131 |
|
|
1132 |
if (sscanf(data, CCS_KEYWORD_USE_PROFILE "%u", &profile) == 1 |
if (sscanf(data, "use_profile %u\n", &profile) == 1 |
1133 |
&& profile < CCS_MAX_PROFILES) { |
&& profile < CCS_MAX_PROFILES) { |
1134 |
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
1135 |
domain->profile = (u8) profile; |
domain->profile = (u8) profile; |
1136 |
return 0; |
return 0; |
1137 |
} |
} |
1138 |
if (!strcmp(data, CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_READ)) { |
if (sscanf(data, "use_group %u\n", &profile) == 1 |
1139 |
domain->ignore_global_allow_read = !is_delete; |
&& profile < CCS_MAX_ACL_GROUPS) { |
1140 |
|
domain->group = (u8) profile; |
1141 |
return 0; |
return 0; |
1142 |
} |
} |
1143 |
if (!strcmp(data, CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_ENV)) { |
for (profile = 0; profile < CCS_MAX_DOMAIN_INFO_FLAGS; profile++) { |
1144 |
domain->ignore_global_allow_env = !is_delete; |
const char *cp = ccs_dif[profile]; |
1145 |
|
if (strncmp(data, cp, strlen(cp) - 1)) |
1146 |
|
continue; |
1147 |
|
domain->flags[profile] = !is_delete; |
1148 |
return 0; |
return 0; |
1149 |
} |
} |
1150 |
cp = ccs_find_condition_part(data); |
return ccs_write_domain2(data, domain, is_delete); |
|
if (cp) { |
|
|
cond = ccs_get_condition(cp); |
|
|
if (!cond) |
|
|
return -EINVAL; |
|
|
} |
|
|
error = ccs_write_domain_policy2(data, domain, cond, is_delete); |
|
|
if (cond) |
|
|
ccs_put_condition(cond); |
|
|
return error; |
|
1151 |
} |
} |
1152 |
|
|
1153 |
/** |
/** |
1156 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1157 |
* @ptr: Pointer to "struct ccs_name_union". |
* @ptr: Pointer to "struct ccs_name_union". |
1158 |
* |
* |
1159 |
* Returns true on success, false otherwise. |
* Returns nothing. |
1160 |
*/ |
*/ |
1161 |
static bool ccs_print_name_union(struct ccs_io_buffer *head, |
static void ccs_print_name_union(struct ccs_io_buffer *head, |
1162 |
const struct ccs_name_union *ptr) |
const struct ccs_name_union *ptr) |
1163 |
{ |
{ |
1164 |
int pos = head->read_avail; |
const bool cond = head->r.print_cond_part; |
1165 |
if (pos && head->read_buf[pos - 1] == ' ') |
if (!cond) |
1166 |
head->read_avail--; |
ccs_set_space(head); |
1167 |
if (ptr->is_group) |
if (ptr->is_group) { |
1168 |
return ccs_io_printf(head, " @%s", |
ccs_set_string(head, "@"); |
1169 |
ptr->group->group_name->name); |
ccs_set_string(head, ptr->group->group_name->name); |
1170 |
return ccs_io_printf(head, " %s", ptr->filename->name); |
} else { |
1171 |
} |
if (cond) |
1172 |
|
ccs_set_string(head, "\""); |
1173 |
/** |
ccs_set_string(head, ptr->filename->name); |
1174 |
* ccs_print_name_union_quoted - Print a ccs_name_union with double quotes. |
if (cond) |
1175 |
* |
ccs_set_string(head, "\""); |
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_name_union". |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_name_union_quoted(struct ccs_io_buffer *head, |
|
|
const struct ccs_name_union *ptr) |
|
|
{ |
|
|
if (ptr->is_group) |
|
|
return ccs_io_printf(head, "@%s", |
|
|
ptr->group->group_name->name); |
|
|
return ccs_io_printf(head, "\"%s\"", ptr->filename->name); |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_number_union_common - Print a ccs_number_union. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_number_union". |
|
|
* @need_space: True if a space character is needed. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_number_union_common(struct ccs_io_buffer *head, |
|
|
const struct ccs_number_union *ptr, |
|
|
const bool need_space) |
|
|
{ |
|
|
unsigned long min; |
|
|
unsigned long max; |
|
|
u8 min_type; |
|
|
u8 max_type; |
|
|
if (need_space && !ccs_io_printf(head, " ")) |
|
|
return false; |
|
|
if (ptr->is_group) |
|
|
return ccs_io_printf(head, "@%s", |
|
|
ptr->group->group_name->name); |
|
|
min_type = ptr->min_type; |
|
|
max_type = ptr->max_type; |
|
|
min = ptr->values[0]; |
|
|
max = ptr->values[1]; |
|
|
switch (min_type) { |
|
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
|
|
if (!ccs_io_printf(head, "0x%lX", min)) |
|
|
return false; |
|
|
break; |
|
|
case CCS_VALUE_TYPE_OCTAL: |
|
|
if (!ccs_io_printf(head, "0%lo", min)) |
|
|
return false; |
|
|
break; |
|
|
default: |
|
|
if (!ccs_io_printf(head, "%lu", min)) |
|
|
return false; |
|
|
break; |
|
|
} |
|
|
if (min == max && min_type == max_type) |
|
|
return true; |
|
|
switch (max_type) { |
|
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
|
|
return ccs_io_printf(head, "-0x%lX", max); |
|
|
case CCS_VALUE_TYPE_OCTAL: |
|
|
return ccs_io_printf(head, "-0%lo", max); |
|
|
default: |
|
|
return ccs_io_printf(head, "-%lu", max); |
|
1176 |
} |
} |
1177 |
} |
} |
1178 |
|
|
1179 |
/** |
/** |
1180 |
* ccs_print_number_union - Print a ccs_number_union. |
* ccs_print_number_union - Print a ccs_number_union. |
1181 |
* |
* |
1182 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1183 |
* @ptr: Pointer to "struct ccs_number_union". |
* @ptr: Pointer to "struct ccs_number_union". |
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
bool ccs_print_number_union(struct ccs_io_buffer *head, |
|
|
const struct ccs_number_union *ptr) |
|
|
{ |
|
|
return ccs_print_number_union_common(head, ptr, true); |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_number_union_nospace - Print a ccs_number_union without a space character. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_number_union". |
|
1184 |
* |
* |
1185 |
* Returns true on success, false otherwise. |
* Returns nothing. |
1186 |
*/ |
*/ |
1187 |
static bool ccs_print_number_union_nospace(struct ccs_io_buffer *head, |
static void ccs_print_number_union(struct ccs_io_buffer *head, |
1188 |
const struct ccs_number_union *ptr) |
const struct ccs_number_union *ptr) |
1189 |
{ |
{ |
1190 |
return ccs_print_number_union_common(head, ptr, false); |
if (!head->r.print_cond_part) |
1191 |
|
ccs_set_space(head); |
1192 |
|
if (ptr->is_group) { |
1193 |
|
ccs_set_string(head, "@"); |
1194 |
|
ccs_set_string(head, ptr->group->group_name->name); |
1195 |
|
} else { |
1196 |
|
int i; |
1197 |
|
unsigned long min = ptr->values[0]; |
1198 |
|
const unsigned long max = ptr->values[1]; |
1199 |
|
u8 min_type = ptr->value_type[0]; |
1200 |
|
const u8 max_type = ptr->value_type[1]; |
1201 |
|
char buffer[128]; |
1202 |
|
buffer[0] = '\0'; |
1203 |
|
for (i = 0; i < 2; i++) { |
1204 |
|
switch (min_type) { |
1205 |
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
1206 |
|
ccs_addprintf(buffer, sizeof(buffer), "0x%lX", |
1207 |
|
min); |
1208 |
|
break; |
1209 |
|
case CCS_VALUE_TYPE_OCTAL: |
1210 |
|
ccs_addprintf(buffer, sizeof(buffer), "0%lo", |
1211 |
|
min); |
1212 |
|
break; |
1213 |
|
default: |
1214 |
|
ccs_addprintf(buffer, sizeof(buffer), "%lu", |
1215 |
|
min); |
1216 |
|
break; |
1217 |
|
} |
1218 |
|
if (min == max && min_type == max_type) |
1219 |
|
break; |
1220 |
|
ccs_addprintf(buffer, sizeof(buffer), "-"); |
1221 |
|
min_type = max_type; |
1222 |
|
min = max; |
1223 |
|
} |
1224 |
|
ccs_io_printf(head, "%s", buffer); |
1225 |
|
} |
1226 |
} |
} |
1227 |
|
|
1228 |
/** |
/** |
1229 |
* ccs_print_condition - Print condition part. |
* ccs_print_condition - Print condition part. |
1230 |
* |
* |
1231 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1232 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @cond: Pointer to "struct ccs_condition". |
1233 |
* |
* |
1234 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1235 |
*/ |
*/ |
1236 |
static bool ccs_print_condition(struct ccs_io_buffer *head, |
static bool ccs_print_condition(struct ccs_io_buffer *head, |
1237 |
const struct ccs_condition *cond) |
const struct ccs_condition *cond) |
1238 |
{ |
{ |
1239 |
const struct ccs_condition_element *condp; |
switch (head->r.cond_step) { |
1240 |
const struct ccs_number_union *numbers_p; |
case 0: |
1241 |
const struct ccs_name_union *names_p; |
head->r.cond_index = 0; |
1242 |
const struct ccs_argv_entry *argv; |
head->r.cond_step++; |
1243 |
const struct ccs_envp_entry *envp; |
/* fall through */ |
1244 |
u16 condc; |
case 1: |
1245 |
u16 i; |
{ |
1246 |
u16 j; |
const u16 condc = cond->condc; |
1247 |
char buffer[32]; |
const struct ccs_condition_element *condp = |
1248 |
if (!cond) |
(typeof(condp)) (cond + 1); |
1249 |
goto no_condition; |
const struct ccs_number_union *numbers_p = |
1250 |
condc = cond->condc; |
(typeof(numbers_p)) (condp + condc); |
1251 |
condp = (const struct ccs_condition_element *) (cond + 1); |
const struct ccs_name_union *names_p = |
1252 |
numbers_p = (const struct ccs_number_union *) (condp + condc); |
(typeof(names_p)) |
1253 |
names_p = (const struct ccs_name_union *) |
(numbers_p + cond->numbers_count); |
1254 |
(numbers_p + cond->numbers_count); |
const struct ccs_argv *argv = |
1255 |
argv = (const struct ccs_argv_entry *) (names_p + cond->names_count); |
(typeof(argv)) (names_p + cond->names_count); |
1256 |
envp = (const struct ccs_envp_entry *) (argv + cond->argc); |
const struct ccs_envp *envp = |
1257 |
memset(buffer, 0, sizeof(buffer)); |
(typeof(envp)) (argv + cond->argc); |
1258 |
if (condc && !ccs_io_printf(head, "%s", " if")) |
u16 skip; |
1259 |
goto out; |
for (skip = 0; skip < head->r.cond_index; skip++) { |
1260 |
for (i = 0; i < condc; i++) { |
const u8 left = condp->left; |
1261 |
const u8 match = condp->equals; |
const u8 right = condp->right; |
1262 |
const u8 left = condp->left; |
condp++; |
1263 |
const u8 right = condp->right; |
switch (left) { |
1264 |
condp++; |
case CCS_ARGV_ENTRY: |
1265 |
switch (left) { |
argv++; |
1266 |
case CCS_ARGV_ENTRY: |
continue; |
1267 |
if (!ccs_io_printf(head, " exec.argv[%u]%s\"%s\"", |
case CCS_ENVP_ENTRY: |
1268 |
argv->index, argv->is_not ? |
envp++; |
1269 |
"!=" : "=", argv->value->name)) |
continue; |
1270 |
goto out; |
case CCS_NUMBER_UNION: |
1271 |
argv++; |
numbers_p++; |
1272 |
continue; |
break; |
1273 |
case CCS_ENVP_ENTRY: |
} |
1274 |
if (!ccs_io_printf(head, " exec.envp[\"%s\"]%s", |
switch (right) { |
1275 |
envp->name->name, envp->is_not ? |
case CCS_NAME_UNION: |
1276 |
"!=" : "=")) |
names_p++; |
1277 |
goto out; |
break; |
1278 |
if (envp->value) { |
case CCS_NUMBER_UNION: |
1279 |
if (!ccs_io_printf(head, "\"%s\"", |
numbers_p++; |
1280 |
envp->value->name)) |
break; |
1281 |
goto out; |
} |
1282 |
} else { |
} |
1283 |
if (!ccs_io_printf(head, "NULL")) |
while (head->r.cond_index < condc) { |
1284 |
goto out; |
const u8 match = condp->equals; |
1285 |
|
const u8 left = condp->left; |
1286 |
|
const u8 right = condp->right; |
1287 |
|
if (!ccs_flush(head)) |
1288 |
|
return false; |
1289 |
|
condp++; |
1290 |
|
head->r.cond_index++; |
1291 |
|
ccs_set_space(head); |
1292 |
|
switch (left) { |
1293 |
|
case CCS_ARGV_ENTRY: |
1294 |
|
ccs_io_printf(head, |
1295 |
|
"exec.argv[%u]%s\"%s\"", |
1296 |
|
argv->index, |
1297 |
|
argv->is_not ? |
1298 |
|
"!=" : "=", |
1299 |
|
argv->value->name); |
1300 |
|
argv++; |
1301 |
|
continue; |
1302 |
|
case CCS_ENVP_ENTRY: |
1303 |
|
ccs_io_printf(head, |
1304 |
|
"exec.envp[\"%s\"]%s", |
1305 |
|
envp->name->name, |
1306 |
|
envp->is_not ? |
1307 |
|
"!=" : "="); |
1308 |
|
if (envp->value) { |
1309 |
|
ccs_set_string(head, "\""); |
1310 |
|
ccs_set_string(head, envp-> |
1311 |
|
value->name); |
1312 |
|
ccs_set_string(head, "\""); |
1313 |
|
} else { |
1314 |
|
ccs_set_string(head, "NULL"); |
1315 |
|
} |
1316 |
|
envp++; |
1317 |
|
continue; |
1318 |
|
case CCS_NUMBER_UNION: |
1319 |
|
ccs_print_number_union(head, |
1320 |
|
numbers_p++); |
1321 |
|
break; |
1322 |
|
default: |
1323 |
|
ccs_set_string(head, |
1324 |
|
ccs_condition_keyword[left]); |
1325 |
|
break; |
1326 |
|
} |
1327 |
|
ccs_set_string(head, match ? "=" : "!="); |
1328 |
|
switch (right) { |
1329 |
|
case CCS_NAME_UNION: |
1330 |
|
ccs_print_name_union(head, names_p++); |
1331 |
|
break; |
1332 |
|
case CCS_NUMBER_UNION: |
1333 |
|
ccs_print_number_union(head, |
1334 |
|
numbers_p++); |
1335 |
|
break; |
1336 |
|
default: |
1337 |
|
ccs_set_string(head, |
1338 |
|
ccs_condition_keyword[right]); |
1339 |
|
break; |
1340 |
|
} |
1341 |
} |
} |
|
envp++; |
|
|
continue; |
|
|
case CCS_NUMBER_UNION: |
|
|
if (!ccs_print_number_union(head, numbers_p++)) |
|
|
goto out; |
|
|
break; |
|
|
default: |
|
|
if (left >= CCS_MAX_CONDITION_KEYWORD) |
|
|
goto out; |
|
|
if (!ccs_io_printf(head, " %s", |
|
|
ccs_condition_keyword[left])) |
|
|
goto out; |
|
|
break; |
|
1342 |
} |
} |
1343 |
if (!ccs_io_printf(head, "%s", match ? "=" : "!=")) |
head->r.cond_step++; |
1344 |
goto out; |
/* fall through */ |
1345 |
switch (right) { |
case 2: |
1346 |
case CCS_NAME_UNION: |
if (!ccs_flush(head)) |
|
if (!ccs_print_name_union_quoted(head, names_p++)) |
|
|
goto out; |
|
|
break; |
|
|
case CCS_NUMBER_UNION: |
|
|
if (!ccs_print_number_union_nospace(head, numbers_p++)) |
|
|
goto out; |
|
|
break; |
|
|
default: |
|
|
if (right >= CCS_MAX_CONDITION_KEYWORD) |
|
|
goto out; |
|
|
if (!ccs_io_printf(head, "%s", |
|
|
ccs_condition_keyword[right])) |
|
|
goto out; |
|
1347 |
break; |
break; |
1348 |
|
head->r.cond_step++; |
1349 |
|
/* fall through */ |
1350 |
|
case 3: |
1351 |
|
if (cond->grant_log != CCS_GRANTLOG_AUTO) |
1352 |
|
ccs_io_printf(head, " grant_log=%s", |
1353 |
|
ccs_yesno(cond->grant_log == |
1354 |
|
CCS_GRANTLOG_YES)); |
1355 |
|
if (cond->transit) { |
1356 |
|
ccs_set_string(head, " auto_domain_transition=\""); |
1357 |
|
ccs_set_string(head, cond->transit->name); |
1358 |
|
ccs_set_string(head, "\""); |
1359 |
} |
} |
1360 |
} |
ccs_set_lf(head); |
|
i = cond->post_state[3]; |
|
|
if (!i) |
|
|
goto no_condition; |
|
|
if (!ccs_io_printf(head, " ; set")) |
|
|
goto out; |
|
|
for (j = 0; j < 3; j++) { |
|
|
if (!(i & (1 << j))) |
|
|
continue; |
|
|
if (!ccs_io_printf(head, " task.state[%u]=%u", j, |
|
|
cond->post_state[j])) |
|
|
goto out; |
|
|
} |
|
|
no_condition: |
|
|
if (ccs_io_printf(head, "\n")) |
|
1361 |
return true; |
return true; |
|
out: |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_path_acl - Print a path ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_path_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_path_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_path_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
int pos; |
|
|
u8 bit; |
|
|
const u16 perm = ptr->perm; |
|
|
for (bit = head->read_bit; bit < CCS_MAX_PATH_OPERATION; bit++) { |
|
|
if (!(perm & (1 << bit))) |
|
|
continue; |
|
|
if (head->read_execute_only && bit != CCS_TYPE_EXECUTE) |
|
|
continue; |
|
|
/* Print "read/write" instead of "read" and "write". */ |
|
|
if ((bit == CCS_TYPE_READ || bit == CCS_TYPE_WRITE) |
|
|
&& (perm & (1 << CCS_TYPE_READ_WRITE))) |
|
|
continue; |
|
|
pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, "allow_%s", ccs_path2keyword(bit)) || |
|
|
!ccs_print_name_union(head, &ptr->name) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
1362 |
} |
} |
1363 |
head->read_bit = 0; |
return false; |
|
return true; |
|
1364 |
} |
} |
1365 |
|
|
1366 |
/** |
/** |
1367 |
* ccs_print_path_number3_acl - Print a path_number3 ACL entry. |
* ccs_fns - Find next set bit. |
1368 |
* |
* |
1369 |
* @head: Pointer to "struct ccs_io_buffer". |
* @perm: 8 bits value. |
1370 |
* @ptr: Pointer to "struct ccs_path_number3_acl". |
* @bit: First bit to find. |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
1371 |
* |
* |
1372 |
* Returns true on success, false otherwise. |
* Returns next set bit on success, 8 otherwise. |
1373 |
*/ |
*/ |
1374 |
static bool ccs_print_path_number3_acl(struct ccs_io_buffer *head, |
static u8 ccs_fns(const u8 perm, u8 bit) |
|
struct ccs_path_number3_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
1375 |
{ |
{ |
1376 |
int pos; |
for ( ; bit < 8; bit++) |
1377 |
u8 bit; |
if (perm & (1 << bit)) |
1378 |
const u16 perm = ptr->perm; |
break; |
1379 |
for (bit = head->read_bit; bit < CCS_MAX_PATH_NUMBER3_OPERATION; |
return bit; |
|
bit++) { |
|
|
if (!(perm & (1 << bit))) |
|
|
continue; |
|
|
pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, "allow_%s", |
|
|
ccs_path_number32keyword(bit)) || |
|
|
!ccs_print_name_union(head, &ptr->name) || |
|
|
!ccs_print_number_union(head, &ptr->mode) || |
|
|
!ccs_print_number_union(head, &ptr->major) || |
|
|
!ccs_print_number_union(head, &ptr->minor) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
} |
|
|
head->read_bit = 0; |
|
|
return true; |
|
1380 |
} |
} |
1381 |
|
|
1382 |
/** |
/** |
1383 |
* ccs_print_path2_acl - Print a path2 ACL entry. |
* ccs_set_group - Print "acl_group " header keyword. |
1384 |
* |
* |
1385 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* @ptr: Pointer to "struct ccs_path2_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
1386 |
* |
* |
1387 |
* Returns true on success, false otherwise. |
* Returns nothing. |
1388 |
*/ |
*/ |
1389 |
static bool ccs_print_path2_acl(struct ccs_io_buffer *head, |
static void ccs_set_group(struct ccs_io_buffer *head) |
|
struct ccs_path2_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
1390 |
{ |
{ |
1391 |
int pos; |
if (head->type == CCS_EXCEPTIONPOLICY) |
1392 |
u8 bit; |
ccs_io_printf(head, "acl_group %u ", head->r.group_index); |
|
const u8 perm = ptr->perm; |
|
|
for (bit = head->read_bit; bit < CCS_MAX_PATH2_OPERATION; bit++) { |
|
|
if (!(perm & (1 << bit))) |
|
|
continue; |
|
|
pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, "allow_%s", |
|
|
ccs_path22keyword(bit)) || |
|
|
!ccs_print_name_union(head, &ptr->name1) || |
|
|
!ccs_print_name_union(head, &ptr->name2) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
} |
|
|
head->read_bit = 0; |
|
|
return true; |
|
1393 |
} |
} |
1394 |
|
|
1395 |
/** |
/** |
1396 |
* ccs_print_path_number_acl - Print a path_number ACL entry. |
* ccs_print_entry - Print an ACL entry. |
1397 |
* |
* |
1398 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1399 |
* @ptr: Pointer to "struct ccs_path_number_acl". |
* @acl: Pointer to an ACL entry. |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
1400 |
* |
* |
1401 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1402 |
*/ |
*/ |
1403 |
static bool ccs_print_path_number_acl(struct ccs_io_buffer *head, |
static bool ccs_print_entry(struct ccs_io_buffer *head, |
1404 |
struct ccs_path_number_acl *ptr, |
const struct ccs_acl_info *acl) |
|
const struct ccs_condition *cond) |
|
1405 |
{ |
{ |
1406 |
int pos; |
const u8 acl_type = acl->type; |
1407 |
u8 bit; |
u8 bit; |
1408 |
const u8 perm = ptr->perm; |
if (head->r.print_cond_part) |
1409 |
for (bit = head->read_bit; bit < CCS_MAX_PATH_NUMBER_OPERATION; |
goto print_cond_part; |
1410 |
bit++) { |
if (acl->is_deleted) |
1411 |
if (!(perm & (1 << bit))) |
return true; |
1412 |
continue; |
next: |
1413 |
pos = head->read_avail; |
bit = head->r.bit; |
1414 |
if (!ccs_io_printf(head, "allow_%s", |
if (!ccs_flush(head)) |
|
ccs_path_number2keyword(bit)) || |
|
|
!ccs_print_name_union(head, &ptr->name) || |
|
|
!ccs_print_number_union(head, &ptr->number) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
} |
|
|
head->read_bit = 0; |
|
|
return true; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_env_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_env_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
const int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_ENV "%s", ptr->env->name) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
return true; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_capability_acl - Print a capability ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_capability_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_capability_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
const int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_CAPABILITY "%s", |
|
|
ccs_cap2keyword(ptr->operation)) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
return true; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_ipv4_entry - Print IPv4 address of a network ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_ip_network_acl". |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_ipv4_entry(struct ccs_io_buffer *head, |
|
|
struct ccs_ip_network_acl *ptr) |
|
|
{ |
|
|
const u32 min_address = ptr->address.ipv4.min; |
|
|
const u32 max_address = ptr->address.ipv4.max; |
|
|
if (!ccs_io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) |
|
|
return false; |
|
|
if (min_address != max_address |
|
|
&& !ccs_io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) |
|
|
return false; |
|
|
return true; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_ipv6_entry - Print IPv6 address of a network ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_ip_network_acl". |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_ipv6_entry(struct ccs_io_buffer *head, |
|
|
struct ccs_ip_network_acl *ptr) |
|
|
{ |
|
|
char buf[64]; |
|
|
const struct in6_addr *min_address = ptr->address.ipv6.min; |
|
|
const struct in6_addr *max_address = ptr->address.ipv6.max; |
|
|
ccs_print_ipv6(buf, sizeof(buf), min_address); |
|
|
if (!ccs_io_printf(head, "%s", buf)) |
|
1415 |
return false; |
return false; |
1416 |
if (min_address != max_address) { |
else if (acl_type == CCS_TYPE_PATH_ACL) { |
1417 |
ccs_print_ipv6(buf, sizeof(buf), max_address); |
struct ccs_path_acl *ptr |
1418 |
if (!ccs_io_printf(head, "-%s", buf)) |
= container_of(acl, typeof(*ptr), head); |
1419 |
return false; |
const u16 perm = ptr->perm; |
1420 |
} |
for ( ; bit < CCS_MAX_PATH_OPERATION; bit++) { |
1421 |
return true; |
if (!(perm & (1 << bit))) |
1422 |
} |
continue; |
1423 |
|
if (head->r.print_execute_only && |
1424 |
/** |
bit != CCS_TYPE_EXECUTE |
1425 |
* ccs_print_network_acl - Print a network ACL entry. |
/* && bit != CCS_TYPE_TRANSIT */) |
1426 |
* |
continue; |
1427 |
* @head: Pointer to "struct ccs_io_buffer". |
break; |
1428 |
* @ptr: Pointer to "struct ccs_ip_network_acl". |
} |
1429 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
if (bit >= CCS_MAX_PATH_OPERATION) |
1430 |
* |
goto done; |
1431 |
* Returns true on success, false otherwise. |
ccs_set_group(head); |
1432 |
*/ |
ccs_set_string(head, "file "); |
1433 |
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
ccs_set_string(head, ccs_path_keyword[bit]); |
1434 |
struct ccs_ip_network_acl *ptr, |
ccs_print_name_union(head, &ptr->name); |
1435 |
const struct ccs_condition *cond) |
} else if (acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER || |
1436 |
{ |
acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
1437 |
int pos; |
struct ccs_handler_acl *ptr |
1438 |
u8 bit; |
= container_of(acl, typeof(*ptr), head); |
1439 |
const u16 perm = ptr->perm; |
ccs_set_group(head); |
1440 |
for (bit = head->read_bit; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
ccs_set_string(head, "task "); |
1441 |
if (!(perm & (1 << bit))) |
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER |
1442 |
continue; |
? "auto_execute_handler " : |
1443 |
pos = head->read_avail; |
"denied_execute_handler "); |
1444 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_NETWORK "%s ", |
ccs_set_string(head, ptr->handler->name); |
1445 |
ccs_net2keyword(bit))) |
} else if (acl_type == CCS_TYPE_AUTO_TASK_ACL || |
1446 |
goto out; |
acl_type == CCS_TYPE_MANUAL_TASK_ACL) { |
1447 |
|
struct ccs_task_acl *ptr = |
1448 |
|
container_of(acl, typeof(*ptr), head); |
1449 |
|
ccs_set_group(head); |
1450 |
|
ccs_set_string(head, "task "); |
1451 |
|
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_TASK_ACL ? |
1452 |
|
"auto_domain_transition " : |
1453 |
|
"manual_domain_transition "); |
1454 |
|
ccs_set_string(head, ptr->domainname->name); |
1455 |
|
} else if (head->r.print_execute_only) { |
1456 |
|
return true; |
1457 |
|
} else if (acl_type == CCS_TYPE_MKDEV_ACL) { |
1458 |
|
struct ccs_mkdev_acl *ptr = |
1459 |
|
container_of(acl, typeof(*ptr), head); |
1460 |
|
bit = ccs_fns(ptr->perm, bit); |
1461 |
|
if (bit >= CCS_MAX_MKDEV_OPERATION) |
1462 |
|
goto done; |
1463 |
|
ccs_set_group(head); |
1464 |
|
ccs_set_string(head, "file "); |
1465 |
|
ccs_set_string(head, ccs_mac_keywords[ccs_pnnn2mac[bit]]); |
1466 |
|
ccs_print_name_union(head, &ptr->name); |
1467 |
|
ccs_print_number_union(head, &ptr->mode); |
1468 |
|
ccs_print_number_union(head, &ptr->major); |
1469 |
|
ccs_print_number_union(head, &ptr->minor); |
1470 |
|
} else if (acl_type == CCS_TYPE_PATH2_ACL) { |
1471 |
|
struct ccs_path2_acl *ptr = |
1472 |
|
container_of(acl, typeof(*ptr), head); |
1473 |
|
bit = ccs_fns(ptr->perm, bit); |
1474 |
|
if (bit >= CCS_MAX_PATH2_OPERATION) |
1475 |
|
goto done; |
1476 |
|
ccs_set_group(head); |
1477 |
|
ccs_set_string(head, "file "); |
1478 |
|
ccs_set_string(head, ccs_mac_keywords[ccs_pp2mac[bit]]); |
1479 |
|
ccs_print_name_union(head, &ptr->name1); |
1480 |
|
ccs_print_name_union(head, &ptr->name2); |
1481 |
|
} else if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
1482 |
|
struct ccs_path_number_acl *ptr = |
1483 |
|
container_of(acl, typeof(*ptr), head); |
1484 |
|
bit = ccs_fns(ptr->perm, bit); |
1485 |
|
if (bit >= CCS_MAX_PATH_NUMBER_OPERATION) |
1486 |
|
goto done; |
1487 |
|
ccs_set_group(head); |
1488 |
|
ccs_set_string(head, "file "); |
1489 |
|
ccs_set_string(head, ccs_mac_keywords[ccs_pn2mac[bit]]); |
1490 |
|
ccs_print_name_union(head, &ptr->name); |
1491 |
|
ccs_print_number_union(head, &ptr->number); |
1492 |
|
} else if (acl_type == CCS_TYPE_ENV_ACL) { |
1493 |
|
struct ccs_env_acl *ptr = |
1494 |
|
container_of(acl, typeof(*ptr), head); |
1495 |
|
ccs_set_group(head); |
1496 |
|
ccs_set_string(head, "misc env "); |
1497 |
|
ccs_set_string(head, ptr->env->name); |
1498 |
|
} else if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
1499 |
|
struct ccs_capability_acl *ptr = |
1500 |
|
container_of(acl, typeof(*ptr), head); |
1501 |
|
ccs_set_group(head); |
1502 |
|
ccs_set_string(head, "capability "); |
1503 |
|
ccs_set_string(head, |
1504 |
|
ccs_mac_keywords[ccs_c2mac[ptr->operation]]); |
1505 |
|
} else if (acl_type == CCS_TYPE_INET_ACL) { |
1506 |
|
struct ccs_inet_acl *ptr = |
1507 |
|
container_of(acl, typeof(*ptr), head); |
1508 |
|
bit = ccs_fns(ptr->perm, bit); |
1509 |
|
if (bit >= CCS_MAX_NETWORK_OPERATION) |
1510 |
|
goto done; |
1511 |
|
ccs_set_group(head); |
1512 |
|
ccs_set_string(head, "network inet "); |
1513 |
|
ccs_set_string(head, ccs_proto_keyword[ptr->protocol]); |
1514 |
|
ccs_set_space(head); |
1515 |
|
ccs_set_string(head, ccs_socket_keyword[bit]); |
1516 |
|
ccs_set_space(head); |
1517 |
switch (ptr->address_type) { |
switch (ptr->address_type) { |
1518 |
|
char buf[128]; |
1519 |
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
1520 |
if (!ccs_io_printf(head, "@%s", ptr->address.group-> |
ccs_set_string(head, "@"); |
1521 |
group_name->name)) |
ccs_set_string(head, |
1522 |
goto out; |
ptr->address.group->group_name->name); |
1523 |
break; |
break; |
1524 |
case CCS_IP_ADDRESS_TYPE_IPv4: |
case CCS_IP_ADDRESS_TYPE_IPv4: |
1525 |
if (!ccs_print_ipv4_entry(head, ptr)) |
ccs_print_ipv4(buf, sizeof(buf), ptr->address.ipv4.min, |
1526 |
goto out; |
ptr->address.ipv4.max); |
1527 |
|
ccs_io_printf(head, "%s", buf); |
1528 |
break; |
break; |
1529 |
case CCS_IP_ADDRESS_TYPE_IPv6: |
case CCS_IP_ADDRESS_TYPE_IPv6: |
1530 |
if (!ccs_print_ipv6_entry(head, ptr)) |
ccs_print_ipv6(buf, sizeof(buf), ptr->address.ipv6.min, |
1531 |
goto out; |
ptr->address.ipv6.max); |
1532 |
break; |
ccs_io_printf(head, "%s", buf); |
1533 |
} |
break; |
1534 |
if (!ccs_print_number_union(head, &ptr->port) || |
} |
1535 |
!ccs_print_condition(head, cond)) |
ccs_print_number_union(head, &ptr->port); |
1536 |
goto out; |
} else if (acl_type == CCS_TYPE_UNIX_ACL) { |
1537 |
|
struct ccs_unix_acl *ptr = |
1538 |
|
container_of(acl, typeof(*ptr), head); |
1539 |
|
bit = ccs_fns(ptr->perm, bit); |
1540 |
|
if (bit >= CCS_MAX_NETWORK_OPERATION) |
1541 |
|
goto done; |
1542 |
|
ccs_set_group(head); |
1543 |
|
ccs_set_string(head, "network unix "); |
1544 |
|
ccs_set_string(head, ccs_proto_keyword[ptr->protocol]); |
1545 |
|
ccs_set_space(head); |
1546 |
|
ccs_set_string(head, ccs_socket_keyword[bit]); |
1547 |
|
ccs_print_name_union(head, &ptr->name); |
1548 |
|
} else if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
1549 |
|
struct ccs_signal_acl *ptr = |
1550 |
|
container_of(acl, typeof(*ptr), head); |
1551 |
|
ccs_set_group(head); |
1552 |
|
ccs_set_string(head, "ipc signal "); |
1553 |
|
ccs_io_printf(head, "%u ", ptr->sig); |
1554 |
|
ccs_set_string(head, ptr->domainname->name); |
1555 |
|
} else if (acl_type == CCS_TYPE_MOUNT_ACL) { |
1556 |
|
struct ccs_mount_acl *ptr = |
1557 |
|
container_of(acl, typeof(*ptr), head); |
1558 |
|
ccs_set_group(head); |
1559 |
|
ccs_io_printf(head, "file mount"); |
1560 |
|
ccs_print_name_union(head, &ptr->dev_name); |
1561 |
|
ccs_print_name_union(head, &ptr->dir_name); |
1562 |
|
ccs_print_name_union(head, &ptr->fs_type); |
1563 |
|
ccs_print_number_union(head, &ptr->flags); |
1564 |
|
} |
1565 |
|
head->r.bit = bit + 1; |
1566 |
|
if (acl->cond) { |
1567 |
|
head->r.print_cond_part = true; |
1568 |
|
head->r.cond_step = 0; |
1569 |
|
if (!ccs_flush(head)) |
1570 |
|
return false; |
1571 |
|
print_cond_part: |
1572 |
|
if (!ccs_print_condition(head, acl->cond)) |
1573 |
|
return false; |
1574 |
|
head->r.print_cond_part = false; |
1575 |
|
} else { |
1576 |
|
ccs_set_lf(head); |
1577 |
} |
} |
1578 |
head->read_bit = 0; |
switch (acl_type) { |
1579 |
return true; |
case CCS_TYPE_PATH_ACL: |
1580 |
out: |
case CCS_TYPE_MKDEV_ACL: |
1581 |
head->read_bit = bit; |
case CCS_TYPE_PATH2_ACL: |
1582 |
head->read_avail = pos; |
case CCS_TYPE_PATH_NUMBER_ACL: |
1583 |
return false; |
case CCS_TYPE_INET_ACL: |
1584 |
} |
case CCS_TYPE_UNIX_ACL: |
1585 |
|
goto next; |
|
/** |
|
|
* ccs_print_signal_acl - Print a signal ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct signale_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_signal_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
const int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_SIGNAL "%u %s", |
|
|
ptr->sig, ptr->domainname->name) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1586 |
} |
} |
1587 |
|
done: |
1588 |
|
head->r.bit = 0; |
1589 |
return true; |
return true; |
1590 |
} |
} |
1591 |
|
|
1592 |
/** |
/** |
1593 |
* ccs_print_execute_handler_record - Print an execute handler ACL entry. |
* ccs_read_domain2 - Read domain policy. |
1594 |
* |
* |
1595 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1596 |
* @keyword: Name of the keyword. |
* @domain: Pointer to "struct ccs_domain_info". |
1597 |
* @ptr: Pointer to "struct ccs_execute_handler_record". |
* @index: Index number. |
1598 |
* |
* |
1599 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
|
*/ |
|
|
static bool ccs_print_execute_handler_record(struct ccs_io_buffer *head, |
|
|
const char *keyword, |
|
|
struct ccs_execute_handler_record * |
|
|
ptr) |
|
|
{ |
|
|
return ccs_io_printf(head, "%s %s\n", keyword, ptr->handler->name); |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_mount_acl - Print a mount ACL entry. |
|
1600 |
* |
* |
1601 |
* @head: Pointer to "struct ccs_io_buffer". |
* Caller holds ccs_read_lock(). |
|
* @ptr: Pointer to "struct ccs_mount_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
1602 |
*/ |
*/ |
1603 |
static bool ccs_print_mount_acl(struct ccs_io_buffer *head, |
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
1604 |
struct ccs_mount_acl *ptr, |
struct ccs_domain_info *domain, |
1605 |
const struct ccs_condition *cond) |
const u8 index) |
1606 |
{ |
{ |
1607 |
const int pos = head->read_avail; |
list_for_each_cookie(head->r.acl, &domain->acl_info_list[index]) { |
1608 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_MOUNT) || |
struct ccs_acl_info *ptr = |
1609 |
!ccs_print_name_union(head, &ptr->dev_name) || |
list_entry(head->r.acl, typeof(*ptr), list); |
1610 |
!ccs_print_name_union(head, &ptr->dir_name) || |
if (!ccs_print_entry(head, ptr)) |
1611 |
!ccs_print_name_union(head, &ptr->fs_type) || |
return false; |
|
!ccs_print_number_union(head, &ptr->flags) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_avail = pos; |
|
|
return false; |
|
1612 |
} |
} |
1613 |
|
head->r.acl = NULL; |
1614 |
return true; |
return true; |
1615 |
} |
} |
1616 |
|
|
1617 |
/** |
/** |
1618 |
* ccs_print_entry - Print an ACL entry. |
* ccs_read_domain - Read domain policy. |
1619 |
* |
* |
1620 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* @ptr: Pointer to an ACL entry. |
|
1621 |
* |
* |
1622 |
* Returns true on success, false otherwise. |
* Returns nothing. |
|
*/ |
|
|
static bool ccs_print_entry(struct ccs_io_buffer *head, |
|
|
struct ccs_acl_info *ptr) |
|
|
{ |
|
|
const struct ccs_condition *cond = ptr->cond; |
|
|
const u8 acl_type = ptr->type; |
|
|
if (ptr->is_deleted) |
|
|
return true; |
|
|
if (acl_type == CCS_TYPE_PATH_ACL) { |
|
|
struct ccs_path_acl *acl |
|
|
= container_of(ptr, struct ccs_path_acl, head); |
|
|
return ccs_print_path_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_EXECUTE_HANDLER) { |
|
|
struct ccs_execute_handler_record *acl |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
|
|
head); |
|
|
const char *keyword = CCS_KEYWORD_EXECUTE_HANDLER; |
|
|
return ccs_print_execute_handler_record(head, keyword, acl); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
|
|
struct ccs_execute_handler_record *acl |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
|
|
head); |
|
|
const char *keyword = CCS_KEYWORD_DENIED_EXECUTE_HANDLER; |
|
|
return ccs_print_execute_handler_record(head, keyword, acl); |
|
|
} |
|
|
if (head->read_execute_only) |
|
|
return true; |
|
|
if (acl_type == CCS_TYPE_PATH_NUMBER3_ACL) { |
|
|
struct ccs_path_number3_acl *acl |
|
|
= container_of(ptr, struct ccs_path_number3_acl, head); |
|
|
return ccs_print_path_number3_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_PATH2_ACL) { |
|
|
struct ccs_path2_acl *acl |
|
|
= container_of(ptr, struct ccs_path2_acl, head); |
|
|
return ccs_print_path2_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
|
|
struct ccs_path_number_acl *acl |
|
|
= container_of(ptr, struct ccs_path_number_acl, head); |
|
|
return ccs_print_path_number_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_ENV_ACL) { |
|
|
struct ccs_env_acl *acl |
|
|
= container_of(ptr, struct ccs_env_acl, head); |
|
|
return ccs_print_env_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
|
|
struct ccs_capability_acl *acl |
|
|
= container_of(ptr, struct ccs_capability_acl, head); |
|
|
return ccs_print_capability_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_IP_NETWORK_ACL) { |
|
|
struct ccs_ip_network_acl *acl |
|
|
= container_of(ptr, struct ccs_ip_network_acl, head); |
|
|
return ccs_print_network_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
|
|
struct ccs_signal_acl *acl |
|
|
= container_of(ptr, struct ccs_signal_acl, head); |
|
|
return ccs_print_signal_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_MOUNT_ACL) { |
|
|
struct ccs_mount_acl *acl |
|
|
= container_of(ptr, struct ccs_mount_acl, head); |
|
|
return ccs_print_mount_acl(head, acl, cond); |
|
|
} |
|
|
BUG(); /* This must not happen. */ |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_read_domain_policy - Read domain policy. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
1623 |
* |
* |
1624 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1625 |
*/ |
*/ |
1626 |
static void ccs_read_domain_policy(struct ccs_io_buffer *head) |
static void ccs_read_domain(struct ccs_io_buffer *head) |
1627 |
{ |
{ |
1628 |
struct list_head *dpos; |
if (head->r.eof) |
|
struct list_head *apos; |
|
|
if (head->read_eof) |
|
1629 |
return; |
return; |
1630 |
if (head->read_step == 0) |
list_for_each_cookie(head->r.domain, &ccs_domain_list) { |
1631 |
head->read_step = 1; |
struct ccs_domain_info *domain = |
1632 |
list_for_each_cookie(dpos, head->read_var1, &ccs_domain_list) { |
list_entry(head->r.domain, typeof(*domain), list); |
1633 |
struct ccs_domain_info *domain; |
switch (head->r.step) { |
1634 |
const char *quota_exceeded = ""; |
u8 i; |
1635 |
const char *transition_failed = ""; |
case 0: |
1636 |
const char *ignore_global_allow_read = ""; |
if (domain->is_deleted && |
1637 |
const char *ignore_global_allow_env = ""; |
!head->r.print_this_domain_only) |
1638 |
domain = list_entry(dpos, struct ccs_domain_info, list); |
continue; |
1639 |
if (head->read_step != 1) |
/* Print domainname and flags. */ |
1640 |
goto acl_loop; |
ccs_set_string(head, domain->domainname->name); |
1641 |
if (domain->is_deleted && !head->read_single_domain) |
ccs_set_lf(head); |
1642 |
continue; |
ccs_io_printf(head, "use_profile %u\n", |
1643 |
/* Print domainname and flags. */ |
domain->profile); |
1644 |
if (domain->quota_warned) |
ccs_io_printf(head, "use_group %u\n", domain->group); |
1645 |
quota_exceeded = "quota_exceeded\n"; |
for (i = 0; i < CCS_MAX_DOMAIN_INFO_FLAGS; i++) |
1646 |
if (domain->domain_transition_failed) |
if (domain->flags[i]) |
1647 |
transition_failed = "transition_failed\n"; |
ccs_set_string(head, ccs_dif[i]); |
1648 |
if (domain->ignore_global_allow_read) |
head->r.step++; |
1649 |
ignore_global_allow_read |
ccs_set_lf(head); |
1650 |
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
/* fall through */ |
1651 |
if (domain->ignore_global_allow_env) |
case 1: |
1652 |
ignore_global_allow_env |
if (!ccs_read_domain2(head, domain, 0)) |
|
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
|
|
if (!ccs_io_printf(head, "%s\n" CCS_KEYWORD_USE_PROFILE "%u\n" |
|
|
"%s%s%s%s\n", domain->domainname->name, |
|
|
domain->profile, quota_exceeded, |
|
|
transition_failed, |
|
|
ignore_global_allow_read, |
|
|
ignore_global_allow_env)) |
|
|
return; |
|
|
head->read_step = 2; |
|
|
acl_loop: |
|
|
if (head->read_step == 3) |
|
|
goto tail_mark; |
|
|
/* Print ACL entries in the domain. */ |
|
|
list_for_each_cookie(apos, head->read_var2, |
|
|
&domain->acl_info_list) { |
|
|
struct ccs_acl_info *ptr |
|
|
= list_entry(apos, struct ccs_acl_info, list); |
|
|
if (!ccs_print_entry(head, ptr)) |
|
1653 |
return; |
return; |
1654 |
|
head->r.step++; |
1655 |
|
/* fall through */ |
1656 |
|
case 2: |
1657 |
|
if (!ccs_read_domain2(head, domain, 1)) |
1658 |
|
return; |
1659 |
|
head->r.step++; |
1660 |
|
if (!ccs_set_lf(head)) |
1661 |
|
return; |
1662 |
|
/* fall through */ |
1663 |
|
case 3: |
1664 |
|
head->r.step = 0; |
1665 |
|
if (head->r.print_this_domain_only) |
1666 |
|
goto done; |
1667 |
} |
} |
|
head->read_step = 3; |
|
|
tail_mark: |
|
|
if (!ccs_io_printf(head, "\n")) |
|
|
return; |
|
|
head->read_step = 1; |
|
|
if (head->read_single_domain) |
|
|
break; |
|
1668 |
} |
} |
1669 |
head->read_eof = true; |
done: |
1670 |
|
head->r.eof = true; |
1671 |
} |
} |
1672 |
|
|
1673 |
/** |
/** |
1707 |
* |
* |
1708 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1709 |
* |
* |
1710 |
|
* Returns nothing. |
1711 |
|
* |
1712 |
* This is equivalent to doing |
* This is equivalent to doing |
1713 |
* |
* |
1714 |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
1720 |
*/ |
*/ |
1721 |
static void ccs_read_domain_profile(struct ccs_io_buffer *head) |
static void ccs_read_domain_profile(struct ccs_io_buffer *head) |
1722 |
{ |
{ |
1723 |
struct list_head *pos; |
if (head->r.eof) |
|
if (head->read_eof) |
|
1724 |
return; |
return; |
1725 |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
list_for_each_cookie(head->r.domain, &ccs_domain_list) { |
1726 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain = |
1727 |
domain = list_entry(pos, struct ccs_domain_info, list); |
list_entry(head->r.domain, typeof(*domain), list); |
1728 |
if (domain->is_deleted) |
if (domain->is_deleted) |
1729 |
continue; |
continue; |
1730 |
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
if (!ccs_flush(head)) |
|
domain->domainname->name)) |
|
1731 |
return; |
return; |
1732 |
|
ccs_io_printf(head, "%u ", domain->profile); |
1733 |
|
ccs_set_string(head, domain->domainname->name); |
1734 |
|
ccs_set_lf(head); |
1735 |
} |
} |
1736 |
head->read_eof = true; |
head->r.eof = true; |
1737 |
} |
} |
1738 |
|
|
1739 |
/** |
/** |
1740 |
* ccs_write_pid: Specify PID to obtain domainname. |
* ccs_write_pid - Specify PID to obtain domainname. |
1741 |
* |
* |
1742 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1743 |
* |
* |
1745 |
*/ |
*/ |
1746 |
static int ccs_write_pid(struct ccs_io_buffer *head) |
static int ccs_write_pid(struct ccs_io_buffer *head) |
1747 |
{ |
{ |
1748 |
head->read_eof = false; |
head->r.eof = false; |
1749 |
return 0; |
return 0; |
1750 |
} |
} |
1751 |
|
|
1770 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
1771 |
u32 ccs_flags = 0; |
u32 ccs_flags = 0; |
1772 |
/* Accessing write_buf is safe because head->io_sem is held. */ |
/* Accessing write_buf is safe because head->io_sem is held. */ |
1773 |
if (!buf) |
if (!buf) { |
1774 |
|
head->r.eof = true; |
1775 |
return; /* Do nothing if open(O_RDONLY). */ |
return; /* Do nothing if open(O_RDONLY). */ |
1776 |
if (head->read_avail || head->read_eof) |
} |
1777 |
|
if (head->r.w_pos || head->r.eof) |
1778 |
return; |
return; |
1779 |
head->read_eof = true; |
head->r.eof = true; |
1780 |
if (ccs_str_starts(&buf, "info ")) |
if (ccs_str_starts(&buf, "info ")) |
1781 |
task_info = true; |
task_info = true; |
1782 |
if (ccs_str_starts(&buf, "global-pid ")) |
if (ccs_str_starts(&buf, "global-pid ")) |
1783 |
global_pid = true; |
global_pid = true; |
1784 |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
1785 |
read_lock(&tasklist_lock); |
ccs_tasklist_lock(); |
1786 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
1787 |
if (global_pid) |
if (global_pid) |
1788 |
p = find_task_by_pid_ns(pid, &init_pid_ns); |
p = ccsecurity_exports.find_task_by_pid_ns(pid, &init_pid_ns); |
1789 |
else |
else |
1790 |
p = find_task_by_vpid(pid); |
p = ccsecurity_exports.find_task_by_vpid(pid); |
1791 |
#else |
#else |
1792 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
1793 |
#endif |
#endif |
1794 |
if (p) { |
if (p) { |
1795 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
1796 |
ccs_flags = p->ccs_flags; |
ccs_flags = ccs_task_flags(p); |
1797 |
} |
} |
1798 |
read_unlock(&tasklist_lock); |
ccs_tasklist_unlock(); |
1799 |
if (!domain) |
if (!domain) |
1800 |
return; |
return; |
1801 |
if (!task_info) |
if (!task_info) { |
1802 |
ccs_io_printf(head, "%u %u %s", pid, domain->profile, |
ccs_io_printf(head, "%u %u ", pid, domain->profile); |
1803 |
domain->domainname->name); |
ccs_set_string(head, domain->domainname->name); |
1804 |
else |
} else { |
1805 |
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
ccs_io_printf(head, "%u manager=%s execute_handler=%s ", pid, |
|
"state[0]=%u state[1]=%u state[2]=%u", pid, |
|
1806 |
ccs_yesno(ccs_flags & |
ccs_yesno(ccs_flags & |
1807 |
CCS_TASK_IS_POLICY_MANAGER), |
CCS_TASK_IS_MANAGER), |
1808 |
ccs_yesno(ccs_flags & |
ccs_yesno(ccs_flags & |
1809 |
CCS_TASK_IS_EXECUTE_HANDLER), |
CCS_TASK_IS_EXECUTE_HANDLER)); |
1810 |
(u8) (ccs_flags >> 24), |
} |
|
(u8) (ccs_flags >> 16), |
|
|
(u8) (ccs_flags >> 8)); |
|
1811 |
} |
} |
1812 |
|
|
1813 |
|
/* String table for domain transition control keywords. */ |
1814 |
|
static const char * const ccs_transition_type[CCS_MAX_TRANSITION_TYPE] = { |
1815 |
|
[CCS_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ", |
1816 |
|
[CCS_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ", |
1817 |
|
[CCS_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ", |
1818 |
|
[CCS_TRANSITION_CONTROL_KEEP] = "keep_domain ", |
1819 |
|
}; |
1820 |
|
|
1821 |
|
/* String table for grouping keywords. */ |
1822 |
|
static const char * const ccs_group_name[CCS_MAX_GROUP] = { |
1823 |
|
[CCS_PATH_GROUP] = "path_group ", |
1824 |
|
[CCS_NUMBER_GROUP] = "number_group ", |
1825 |
|
[CCS_ADDRESS_GROUP] = "address_group ", |
1826 |
|
}; |
1827 |
|
|
1828 |
/** |
/** |
1829 |
* ccs_write_exception_policy - Write exception policy. |
* ccs_write_exception - Write exception policy. |
1830 |
* |
* |
1831 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1832 |
* |
* |
1833 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1834 |
*/ |
*/ |
1835 |
static int ccs_write_exception_policy(struct ccs_io_buffer *head) |
static int ccs_write_exception(struct ccs_io_buffer *head) |
1836 |
{ |
{ |
1837 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1838 |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
const bool is_delete = ccs_str_starts(&data, "delete "); |
1839 |
if (ccs_str_starts(&data, CCS_KEYWORD_KEEP_DOMAIN)) |
u8 i; |
1840 |
return ccs_write_domain_keeper_policy(data, false, is_delete); |
static const struct { |
1841 |
if (ccs_str_starts(&data, CCS_KEYWORD_NO_KEEP_DOMAIN)) |
const char *keyword; |
1842 |
return ccs_write_domain_keeper_policy(data, true, is_delete); |
int (*write) (char *, const bool); |
1843 |
if (ccs_str_starts(&data, CCS_KEYWORD_INITIALIZE_DOMAIN)) |
} ccs_callback[2] = { |
1844 |
return ccs_write_domain_initializer_policy(data, false, |
{ "aggregator ", ccs_write_aggregator }, |
1845 |
is_delete); |
{ "deny_autobind ", ccs_write_reserved_port }, |
1846 |
if (ccs_str_starts(&data, CCS_KEYWORD_NO_INITIALIZE_DOMAIN)) |
}; |
1847 |
return ccs_write_domain_initializer_policy(data, true, |
for (i = 0; i < 2; i++) |
1848 |
is_delete); |
if (ccs_str_starts(&data, ccs_callback[i].keyword)) |
1849 |
if (ccs_str_starts(&data, CCS_KEYWORD_AGGREGATOR)) |
return ccs_callback[i].write(data, is_delete); |
1850 |
return ccs_write_aggregator_policy(data, is_delete); |
for (i = 0; i < CCS_MAX_TRANSITION_TYPE; i++) |
1851 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_READ)) |
if (ccs_str_starts(&data, ccs_transition_type[i])) |
1852 |
return ccs_write_globally_readable_policy(data, is_delete); |
return ccs_write_transition_control(data, is_delete, |
1853 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_ENV)) |
i); |
1854 |
return ccs_write_globally_usable_env_policy(data, is_delete); |
for (i = 0; i < CCS_MAX_GROUP; i++) |
1855 |
if (ccs_str_starts(&data, CCS_KEYWORD_FILE_PATTERN)) |
if (ccs_str_starts(&data, ccs_group_name[i])) |
1856 |
return ccs_write_pattern_policy(data, is_delete); |
return ccs_write_group(data, is_delete, i); |
1857 |
if (ccs_str_starts(&data, CCS_KEYWORD_PATH_GROUP)) |
if (ccs_str_starts(&data, "acl_group ")) { |
1858 |
return ccs_write_path_group_policy(data, is_delete); |
unsigned int group; |
1859 |
if (ccs_str_starts(&data, CCS_KEYWORD_NUMBER_GROUP)) |
if (sscanf(data, "%u", &group) == 1 && |
1860 |
return ccs_write_number_group_policy(data, is_delete); |
group < CCS_MAX_ACL_GROUPS) { |
1861 |
if (ccs_str_starts(&data, CCS_KEYWORD_DENY_REWRITE)) |
data = strchr(data, ' '); |
1862 |
return ccs_write_no_rewrite_policy(data, is_delete); |
if (data) |
1863 |
if (ccs_str_starts(&data, CCS_KEYWORD_ADDRESS_GROUP)) |
return ccs_write_domain2(data + 1, |
1864 |
return ccs_write_address_group_policy(data, is_delete); |
&ccs_acl_group[group], |
1865 |
if (ccs_str_starts(&data, CCS_KEYWORD_DENY_AUTOBIND)) |
is_delete); |
1866 |
return ccs_write_reserved_port_policy(data, is_delete); |
} |
1867 |
|
} |
1868 |
return -EINVAL; |
return -EINVAL; |
1869 |
} |
} |
1870 |
|
|
1871 |
/** |
/** |
1872 |
* ccs_read_exception_policy - Read exception policy. |
* ccs_read_group - Read "struct ccs_path_group"/"struct ccs_number_group"/"struct ccs_address_group" list. |
1873 |
* |
* |
1874 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1875 |
|
* @idx: Index number. |
1876 |
|
* |
1877 |
|
* Returns true on success, false otherwise. |
1878 |
* |
* |
1879 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1880 |
*/ |
*/ |
1881 |
static void ccs_read_exception_policy(struct ccs_io_buffer *head) |
static bool ccs_read_group(struct ccs_io_buffer *head, const int idx) |
1882 |
{ |
{ |
1883 |
if (head->read_eof) |
list_for_each_cookie(head->r.group, &ccs_group_list[idx]) { |
1884 |
return; |
struct ccs_group *group = |
1885 |
switch (head->read_step) { |
list_entry(head->r.group, typeof(*group), head.list); |
1886 |
case 0: |
list_for_each_cookie(head->r.acl, &group->member_list) { |
1887 |
head->read_var2 = NULL; |
struct ccs_acl_head *ptr = |
1888 |
head->read_step = 1; |
list_entry(head->r.acl, typeof(*ptr), list); |
1889 |
case 1: |
if (ptr->is_deleted) |
1890 |
if (!ccs_read_domain_keeper_policy(head)) |
continue; |
1891 |
break; |
if (!ccs_flush(head)) |
1892 |
head->read_var2 = NULL; |
return false; |
1893 |
head->read_step = 2; |
ccs_set_string(head, ccs_group_name[idx]); |
1894 |
case 2: |
ccs_set_string(head, group->group_name->name); |
1895 |
if (!ccs_read_globally_readable_policy(head)) |
if (idx == CCS_PATH_GROUP) { |
1896 |
break; |
ccs_set_space(head); |
1897 |
head->read_var2 = NULL; |
ccs_set_string(head, container_of |
1898 |
head->read_step = 3; |
(ptr, struct ccs_path_group, |
1899 |
case 3: |
head)->member_name->name); |
1900 |
if (!ccs_read_globally_usable_env_policy(head)) |
} else if (idx == CCS_NUMBER_GROUP) { |
1901 |
break; |
ccs_print_number_union(head, &container_of |
1902 |
head->read_var2 = NULL; |
(ptr, struct ccs_number_group, |
1903 |
head->read_step = 4; |
head)->number); |
1904 |
case 4: |
} else if (idx == CCS_ADDRESS_GROUP) { |
1905 |
if (!ccs_read_domain_initializer_policy(head)) |
char buffer[128]; |
1906 |
break; |
struct ccs_address_group *member = |
1907 |
head->read_var2 = NULL; |
container_of(ptr, typeof(*member), |
1908 |
head->read_step = 6; |
head); |
1909 |
case 6: |
if (member->is_ipv6) |
1910 |
if (!ccs_read_aggregator_policy(head)) |
ccs_print_ipv6(buffer, sizeof(buffer), |
1911 |
break; |
member->min.ipv6, |
1912 |
head->read_var2 = NULL; |
member->max.ipv6); |
1913 |
head->read_step = 7; |
else |
1914 |
case 7: |
ccs_print_ipv4(buffer, sizeof(buffer), |
1915 |
if (!ccs_read_file_pattern(head)) |
member->min.ipv4, |
1916 |
break; |
member->max.ipv4); |
1917 |
head->read_var2 = NULL; |
ccs_io_printf(head, " %s", buffer); |
1918 |
head->read_step = 8; |
} |
1919 |
case 8: |
ccs_set_lf(head); |
1920 |
if (!ccs_read_no_rewrite_policy(head)) |
} |
1921 |
break; |
head->r.acl = NULL; |
|
head->read_var2 = NULL; |
|
|
head->read_step = 9; |
|
|
case 9: |
|
|
if (!ccs_read_path_group_policy(head)) |
|
|
break; |
|
|
head->read_var1 = NULL; |
|
|
head->read_var2 = NULL; |
|
|
head->read_step = 10; |
|
|
case 10: |
|
|
if (!ccs_read_number_group_policy(head)) |
|
|
break; |
|
|
head->read_var1 = NULL; |
|
|
head->read_var2 = NULL; |
|
|
head->read_step = 11; |
|
|
case 11: |
|
|
if (!ccs_read_address_group_policy(head)) |
|
|
break; |
|
|
head->read_var2 = NULL; |
|
|
head->read_step = 12; |
|
|
case 12: |
|
|
if (!ccs_read_reserved_port_policy(head)) |
|
|
break; |
|
|
head->read_eof = true; |
|
1922 |
} |
} |
1923 |
|
head->r.group = NULL; |
1924 |
|
return true; |
1925 |
} |
} |
1926 |
|
|
1927 |
/** |
/** |
1928 |
* ccs_get_argv0 - Get argv[0]. |
* ccs_read_policy - Read "struct ccs_..._entry" list. |
1929 |
* |
* |
1930 |
* @ee: Pointer to "struct ccs_execve_entry". |
* @head: Pointer to "struct ccs_io_buffer". |
1931 |
|
* @idx: Index number. |
1932 |
* |
* |
1933 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1934 |
|
* |
1935 |
|
* Caller holds ccs_read_lock(). |
1936 |
*/ |
*/ |
1937 |
static bool ccs_get_argv0(struct ccs_execve_entry *ee) |
static bool ccs_read_policy(struct ccs_io_buffer *head, const int idx) |
1938 |
{ |
{ |
1939 |
struct linux_binprm *bprm = ee->bprm; |
list_for_each_cookie(head->r.acl, &ccs_policy_list[idx]) { |
1940 |
char *arg_ptr = ee->tmp; |
struct ccs_acl_head *acl = |
1941 |
int arg_len = 0; |
container_of(head->r.acl, typeof(*acl), list); |
1942 |
unsigned long pos = bprm->p; |
if (acl->is_deleted) |
1943 |
int offset = pos % PAGE_SIZE; |
continue; |
1944 |
bool done = false; |
if (!ccs_flush(head)) |
1945 |
if (!bprm->argc) |
return false; |
1946 |
goto out; |
switch (idx) { |
1947 |
while (1) { |
case CCS_ID_TRANSITION_CONTROL: |
1948 |
if (!ccs_dump_page(bprm, pos, &ee->dump)) |
{ |
1949 |
goto out; |
struct ccs_transition_control *ptr = |
1950 |
pos += PAGE_SIZE - offset; |
container_of(acl, typeof(*ptr), head); |
1951 |
/* Read. */ |
ccs_set_string(head, |
1952 |
while (offset < PAGE_SIZE) { |
ccs_transition_type[ptr->type]); |
1953 |
const char *kaddr = ee->dump.data; |
ccs_set_string(head, ptr->program ? |
1954 |
const unsigned char c = kaddr[offset++]; |
ptr->program->name : "any"); |
1955 |
if (c && arg_len < CCS_EXEC_TMPSIZE - 10) { |
ccs_set_string(head, " from "); |
1956 |
if (c == '\\') { |
ccs_set_string(head, ptr->domainname ? |
1957 |
arg_ptr[arg_len++] = '\\'; |
ptr->domainname->name : "any"); |
|
arg_ptr[arg_len++] = '\\'; |
|
|
} else if (c > ' ' && c < 127) { |
|
|
arg_ptr[arg_len++] = c; |
|
|
} else { |
|
|
arg_ptr[arg_len++] = '\\'; |
|
|
arg_ptr[arg_len++] = (c >> 6) + '0'; |
|
|
arg_ptr[arg_len++] |
|
|
= ((c >> 3) & 7) + '0'; |
|
|
arg_ptr[arg_len++] = (c & 7) + '0'; |
|
|
} |
|
|
} else { |
|
|
arg_ptr[arg_len] = '\0'; |
|
|
done = true; |
|
|
break; |
|
1958 |
} |
} |
|
} |
|
|
offset = 0; |
|
|
if (done) |
|
1959 |
break; |
break; |
1960 |
|
case CCS_ID_AGGREGATOR: |
1961 |
|
{ |
1962 |
|
struct ccs_aggregator *ptr = |
1963 |
|
container_of(acl, typeof(*ptr), head); |
1964 |
|
ccs_set_string(head, "aggregator "); |
1965 |
|
ccs_set_string(head, ptr->original_name->name); |
1966 |
|
ccs_set_space(head); |
1967 |
|
ccs_set_string(head, |
1968 |
|
ptr->aggregated_name->name); |
1969 |
|
} |
1970 |
|
break; |
1971 |
|
case CCS_ID_RESERVEDPORT: |
1972 |
|
{ |
1973 |
|
struct ccs_reserved *ptr = |
1974 |
|
container_of(acl, typeof(*ptr), head); |
1975 |
|
const u16 min_port = ptr->min_port; |
1976 |
|
const u16 max_port = ptr->max_port; |
1977 |
|
ccs_set_string(head, "deny_autobind "); |
1978 |
|
ccs_io_printf(head, "%u", min_port); |
1979 |
|
if (min_port != max_port) |
1980 |
|
ccs_io_printf(head, "-%u", max_port); |
1981 |
|
} |
1982 |
|
break; |
1983 |
|
default: |
1984 |
|
continue; |
1985 |
|
} |
1986 |
|
ccs_set_lf(head); |
1987 |
} |
} |
1988 |
|
head->r.acl = NULL; |
1989 |
return true; |
return true; |
|
out: |
|
|
return false; |
|
1990 |
} |
} |
1991 |
|
|
1992 |
/** |
/** |
1993 |
* ccs_get_execute_condition - Get condition part for execute requests. |
* ccs_read_exception - Read exception policy. |
|
* |
|
|
* @ee: Pointer to "struct ccs_execve_entry". |
|
1994 |
* |
* |
1995 |
* Returns pointer to "struct ccs_condition" on success, NULL otherwise. |
* @head: Pointer to "struct ccs_io_buffer". |
|
*/ |
|
|
static struct ccs_condition *ccs_get_execute_condition(struct ccs_execve_entry |
|
|
*ee) |
|
|
{ |
|
|
struct ccs_condition *cond; |
|
|
char *buf; |
|
|
int len = 256; |
|
|
char *realpath = NULL; |
|
|
char *argv0 = NULL; |
|
|
const struct ccs_profile *profile = ccs_profile(ee->r.domain->profile); |
|
|
if (profile->learning->learning_exec_realpath) { |
|
|
struct file *file = ee->bprm->file; |
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20) |
|
|
struct path path = { file->f_vfsmnt, file->f_dentry }; |
|
|
realpath = ccs_realpath_from_path(&path); |
|
|
#else |
|
|
realpath = ccs_realpath_from_path(&file->f_path); |
|
|
#endif |
|
|
if (realpath) |
|
|
len += strlen(realpath) + 17; |
|
|
} |
|
|
if (profile->learning->learning_exec_argv0) { |
|
|
if (ccs_get_argv0(ee)) { |
|
|
argv0 = ee->tmp; |
|
|
len += strlen(argv0) + 16; |
|
|
} |
|
|
} |
|
|
buf = kmalloc(len, GFP_KERNEL); |
|
|
if (!buf) { |
|
|
kfree(realpath); |
|
|
return NULL; |
|
|
} |
|
|
snprintf(buf, len - 1, "if"); |
|
|
if (current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER) { |
|
|
const int pos = strlen(buf); |
|
|
snprintf(buf + pos, len - pos - 1, |
|
|
" task.type=execute_handler"); |
|
|
} |
|
|
if (realpath) { |
|
|
const int pos = strlen(buf); |
|
|
snprintf(buf + pos, len - pos - 1, " exec.realpath=\"%s\"", |
|
|
realpath); |
|
|
kfree(realpath); |
|
|
} |
|
|
if (argv0) { |
|
|
const int pos = strlen(buf); |
|
|
snprintf(buf + pos, len - pos - 1, " exec.argv[0]=\"%s\"", |
|
|
argv0); |
|
|
} |
|
|
cond = ccs_get_condition(buf); |
|
|
kfree(buf); |
|
|
return cond; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_get_symlink_condition - Get condition part for symlink requests. |
|
1996 |
* |
* |
1997 |
* @r: Pointer to "struct ccs_request_info". |
* Returns nothing. |
1998 |
* |
* |
1999 |
* Returns pointer to "struct ccs_condition" on success, NULL otherwise. |
* Caller holds ccs_read_lock(). |
2000 |
*/ |
*/ |
2001 |
static struct ccs_condition *ccs_get_symlink_condition(struct ccs_request_info |
static void ccs_read_exception(struct ccs_io_buffer *head) |
|
*r) |
|
2002 |
{ |
{ |
2003 |
struct ccs_condition *cond; |
if (head->r.eof) |
2004 |
char *buf; |
return; |
2005 |
int len = 256; |
while (head->r.step < CCS_MAX_POLICY && |
2006 |
const char *symlink = NULL; |
ccs_read_policy(head, head->r.step)) |
2007 |
const struct ccs_profile *profile = ccs_profile(r->profile); |
head->r.step++; |
2008 |
if (profile->learning->learning_symlink_target) { |
if (head->r.step < CCS_MAX_POLICY) |
2009 |
symlink = r->obj->symlink_target->name; |
return; |
2010 |
len += strlen(symlink) + 18; |
while (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP && |
2011 |
|
ccs_read_group(head, head->r.step - CCS_MAX_POLICY)) |
2012 |
|
head->r.step++; |
2013 |
|
if (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP) |
2014 |
|
return; |
2015 |
|
while (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP |
2016 |
|
+ CCS_MAX_ACL_GROUPS * 2) { |
2017 |
|
head->r.group_index = (head->r.step - CCS_MAX_POLICY |
2018 |
|
- CCS_MAX_GROUP) / 2; |
2019 |
|
if (!ccs_read_domain2(head, |
2020 |
|
&ccs_acl_group[head->r.group_index], |
2021 |
|
head->r.step & 1)) |
2022 |
|
return; |
2023 |
|
head->r.step++; |
2024 |
} |
} |
2025 |
buf = kmalloc(len, GFP_KERNEL); |
head->r.eof = true; |
|
if (!buf) |
|
|
return NULL; |
|
|
snprintf(buf, len - 1, "if"); |
|
|
if (current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER) { |
|
|
const int pos = strlen(buf); |
|
|
snprintf(buf + pos, len - pos - 1, |
|
|
" task.type=execute_handler"); |
|
|
} |
|
|
if (symlink) { |
|
|
const int pos = strlen(buf); |
|
|
snprintf(buf + pos, len - pos - 1, " symlink.target=\"%s\"", |
|
|
symlink); |
|
|
} |
|
|
cond = ccs_get_condition(buf); |
|
|
kfree(buf); |
|
|
return cond; |
|
2026 |
} |
} |
2027 |
|
|
2028 |
/* Wait queue for ccs_query_list. */ |
/* Wait queue for kernel -> userspace notification. */ |
2029 |
static DECLARE_WAIT_QUEUE_HEAD(ccs_query_wait); |
static DECLARE_WAIT_QUEUE_HEAD(ccs_query_wait); |
2030 |
|
/* Wait queue for userspace -> kernel notification. */ |
2031 |
/* Lock for manipulating ccs_query_list. */ |
static DECLARE_WAIT_QUEUE_HEAD(ccs_answer_wait); |
|
static DEFINE_SPINLOCK(ccs_query_list_lock); |
|
2032 |
|
|
2033 |
/* Structure for query. */ |
/* Structure for query. */ |
2034 |
struct ccs_query_entry { |
struct ccs_query { |
2035 |
struct list_head list; |
struct list_head list; |
2036 |
char *query; |
char *query; |
2037 |
int query_len; |
int query_len; |
2038 |
unsigned int serial; |
unsigned int serial; |
2039 |
int timer; |
int timer; |
2040 |
int answer; |
int answer; |
2041 |
|
u8 retry; |
2042 |
}; |
}; |
2043 |
|
|
2044 |
/* The list for "struct ccs_query_entry". */ |
/* The list for "struct ccs_query". */ |
2045 |
static LIST_HEAD(ccs_query_list); |
static LIST_HEAD(ccs_query_list); |
2046 |
|
|
2047 |
|
/* Lock for manipulating ccs_query_list. */ |
2048 |
|
static DEFINE_SPINLOCK(ccs_query_list_lock); |
2049 |
|
|
2050 |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
2051 |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
2052 |
|
|
2053 |
/** |
/** |
2054 |
|
* ccs_truncate - Truncate a line. |
2055 |
|
* |
2056 |
|
* @str: String to truncate. |
2057 |
|
* |
2058 |
|
* Returns length of truncated @str. |
2059 |
|
*/ |
2060 |
|
static int ccs_truncate(char *str) |
2061 |
|
{ |
2062 |
|
char *start = str; |
2063 |
|
while (*(unsigned char *) str > (unsigned char) ' ') |
2064 |
|
str++; |
2065 |
|
*str = '\0'; |
2066 |
|
return strlen(start) + 1; |
2067 |
|
} |
2068 |
|
|
2069 |
|
/** |
2070 |
|
* ccs_add_entry - Add an ACL to current thread's domain. Used by learning mode. |
2071 |
|
* |
2072 |
|
* @header: Lines containing ACL. |
2073 |
|
* |
2074 |
|
* Returns nothing. |
2075 |
|
*/ |
2076 |
|
static void ccs_add_entry(char *header) |
2077 |
|
{ |
2078 |
|
char *buffer; |
2079 |
|
char *realpath = NULL; |
2080 |
|
char *argv0 = NULL; |
2081 |
|
char *symlink = NULL; |
2082 |
|
char *handler; |
2083 |
|
char *cp = strchr(header, '\n'); |
2084 |
|
int len; |
2085 |
|
if (!cp) |
2086 |
|
return; |
2087 |
|
cp = strchr(cp + 1, '\n'); |
2088 |
|
if (!cp) |
2089 |
|
return; |
2090 |
|
*cp++ = '\0'; |
2091 |
|
len = strlen(cp) + 1; |
2092 |
|
/* strstr() will return NULL if ordering is wrong. */ |
2093 |
|
if (*cp == 'f') { |
2094 |
|
argv0 = strstr(header, " argv[]={ \""); |
2095 |
|
if (argv0) { |
2096 |
|
argv0 += 10; |
2097 |
|
len += ccs_truncate(argv0) + 14; |
2098 |
|
} |
2099 |
|
realpath = strstr(header, " exec={ realpath=\""); |
2100 |
|
if (realpath) { |
2101 |
|
realpath += 8; |
2102 |
|
len += ccs_truncate(realpath) + 6; |
2103 |
|
} |
2104 |
|
symlink = strstr(header, " symlink.target=\""); |
2105 |
|
if (symlink) |
2106 |
|
len += ccs_truncate(symlink + 1) + 1; |
2107 |
|
} |
2108 |
|
handler = strstr(header, "type=execute_handler"); |
2109 |
|
if (handler) |
2110 |
|
len += ccs_truncate(handler) + 6; |
2111 |
|
buffer = kmalloc(len, CCS_GFP_FLAGS); |
2112 |
|
if (!buffer) |
2113 |
|
return; |
2114 |
|
snprintf(buffer, len - 1, "%s", cp); |
2115 |
|
if (handler) |
2116 |
|
ccs_addprintf(buffer, len, " task.%s", handler); |
2117 |
|
if (realpath) |
2118 |
|
ccs_addprintf(buffer, len, " exec.%s", realpath); |
2119 |
|
if (argv0) |
2120 |
|
ccs_addprintf(buffer, len, " exec.argv[0]=%s", argv0); |
2121 |
|
if (symlink) |
2122 |
|
ccs_addprintf(buffer, len, "%s", symlink); |
2123 |
|
ccs_normalize_line(buffer); |
2124 |
|
if (!ccs_write_domain2(buffer, ccs_current_domain(), false)) |
2125 |
|
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
2126 |
|
kfree(buffer); |
2127 |
|
} |
2128 |
|
|
2129 |
|
/** |
2130 |
* ccs_supervisor - Ask for the supervisor's decision. |
* ccs_supervisor - Ask for the supervisor's decision. |
2131 |
* |
* |
2132 |
* @r: Pointer to "struct ccs_request_info". |
* @r: Pointer to "struct ccs_request_info". |
2133 |
* @fmt: The printf()'s format string, followed by parameters. |
* @fmt: The printf()'s format string, followed by parameters. |
2134 |
* |
* |
2135 |
* Returns 0 if the supervisor decided to permit the access request which |
* Returns 0 if the supervisor decided to permit the access request which |
2136 |
* violated the policy in enforcing mode, 1 if the supervisor decided to |
* violated the policy in enforcing mode, CCS_RETRY_REQUEST if the supervisor |
2137 |
* retry the access request which violated the policy in enforcing mode, |
* decided to retry the access request which violated the policy in enforcing |
2138 |
* 0 if it is not in enforcing mode, -EPERM otherwise. |
* mode, 0 if it is not in enforcing mode, -EPERM otherwise. |
2139 |
*/ |
*/ |
2140 |
int ccs_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
int ccs_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
2141 |
{ |
{ |
2142 |
va_list args; |
va_list args; |
2143 |
int error = -EPERM; |
int error; |
|
int pos; |
|
2144 |
int len; |
int len; |
2145 |
static unsigned int ccs_serial; |
static unsigned int ccs_serial; |
2146 |
struct ccs_query_entry *ccs_query_entry = NULL; |
struct ccs_query entry = { }; |
2147 |
bool quota_exceeded = false; |
bool quota_exceeded = false; |
2148 |
char *header; |
va_start(args, fmt); |
2149 |
if (!r->domain) |
len = vsnprintf((char *) &len, 1, fmt, args) + 1; |
2150 |
r->domain = ccs_current_domain(); |
va_end(args); |
2151 |
switch (r->mode) { |
/* Write /proc/ccs/grant_log or /proc/ccs/reject_log. */ |
2152 |
char *buffer; |
va_start(args, fmt); |
2153 |
struct ccs_condition *cond; |
ccs_write_log2(r, len, fmt, args); |
2154 |
case CCS_CONFIG_LEARNING: |
va_end(args); |
2155 |
if (!ccs_domain_quota_ok(r)) |
/* Nothing more to do if granted. */ |
2156 |
return 0; |
if (r->granted) |
|
va_start(args, fmt); |
|
|
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 4; |
|
|
va_end(args); |
|
|
buffer = kmalloc(len, GFP_KERNEL); |
|
|
if (!buffer) |
|
|
return 0; |
|
|
va_start(args, fmt); |
|
|
vsnprintf(buffer, len - 1, fmt, args); |
|
|
va_end(args); |
|
|
ccs_normalize_line(buffer); |
|
|
if (r->ee && !strncmp(buffer, "allow_execute ", 14)) |
|
|
cond = ccs_get_execute_condition(r->ee); |
|
|
else if (r->obj && r->obj->symlink_target) |
|
|
cond = ccs_get_symlink_condition(r); |
|
|
else if ((current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER)) { |
|
|
char str[] = "if task.type=execute_handler"; |
|
|
cond = ccs_get_condition(str); |
|
|
} else |
|
|
cond = NULL; |
|
|
ccs_write_domain_policy2(buffer, r->domain, cond, false); |
|
|
ccs_put_condition(cond); |
|
|
kfree(buffer); |
|
|
/* fall through */ |
|
|
case CCS_CONFIG_PERMISSIVE: |
|
2157 |
return 0; |
return 0; |
2158 |
} |
if (r->mode) |
2159 |
if (!atomic_read(&ccs_query_observers)) { |
ccs_update_stat(r->mode); |
2160 |
|
switch (r->mode) { |
2161 |
int i; |
int i; |
2162 |
if (current->ccs_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
struct ccs_profile *p; |
2163 |
return -EPERM; |
case CCS_CONFIG_ENFORCING: |
2164 |
for (i = 0; i < ccs_profile(r->domain->profile)->enforcing-> |
error = -EPERM; |
2165 |
enforcing_penalty; i++) { |
if (atomic_read(&ccs_query_observers)) |
2166 |
|
break; |
2167 |
|
if (ccs_current_flags() & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
2168 |
|
goto out; |
2169 |
|
p = ccs_profile(r->profile); |
2170 |
|
/* Check enforcing_penalty parameter. */ |
2171 |
|
for (i = 0; i < p->pref[CCS_PREF_ENFORCING_PENALTY]; i++) { |
2172 |
set_current_state(TASK_INTERRUPTIBLE); |
set_current_state(TASK_INTERRUPTIBLE); |
2173 |
schedule_timeout(HZ / 10); |
schedule_timeout(HZ / 10); |
2174 |
} |
} |
2175 |
return -EPER
| |