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* |
* |
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* Copyright (C) 2005-2010 NTT DATA CORPORATION |
* Copyright (C) 2005-2010 NTT DATA CORPORATION |
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* |
* |
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* Version: 1.8.0-pre 2010/09/01 |
* Version: 1.8.0+ 2010/12/31 |
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* |
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* This file is applicable to both 2.4.30 and 2.6.11 and later. |
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* See README.ccs for ChangeLog. |
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* |
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*/ |
*/ |
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#include "internal.h" |
#include "internal.h" |
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static struct ccs_profile ccs_default_profile = { |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
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#ifdef CONFIG_CCSECURITY_AUDIT |
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.preference.audit_max_grant_log = CONFIG_CCSECURITY_MAX_GRANT_LOG, |
/** |
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.preference.audit_max_reject_log = CONFIG_CCSECURITY_MAX_REJECT_LOG, |
* __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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* @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.learning_max_entry = CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY, |
* |
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.preference.learning_exec_realpath = true, |
* @pos: Pointer to "struct list_head". |
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.preference.learning_exec_argv0 = true, |
* @head: Pointer to "struct list_head". |
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.preference.learning_symlink_target = true, |
*/ |
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}; |
#define list_for_each_cookie(pos, head) \ |
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for (pos = pos ? pos : srcu_dereference((head)->next, &ccs_ss); \ |
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pos != (head); pos = srcu_dereference(pos->next, &ccs_ss)) |
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82 |
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/* Profile version. Currently only 20100903 is defined. */ |
/* Profile version. Currently only 20100903 is defined. */ |
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static unsigned int ccs_profile_version; |
static unsigned int ccs_profile_version; |
86 |
/* Profile table. Memory is allocated as needed. */ |
/* Profile table. Memory is allocated as needed. */ |
87 |
static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
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/* String table for functionality that takes 4 modes. */ |
/* String table for operation mode. */ |
90 |
const char *ccs_mode[CCS_CONFIG_MAX_MODE] = { |
const char * const ccs_mode[CCS_CONFIG_MAX_MODE] = { |
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[CCS_CONFIG_DISABLED] = "disabled", |
[CCS_CONFIG_DISABLED] = "disabled", |
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[CCS_CONFIG_LEARNING] = "learning", |
[CCS_CONFIG_LEARNING] = "learning", |
93 |
[CCS_CONFIG_PERMISSIVE] = "permissive", |
[CCS_CONFIG_PERMISSIVE] = "permissive", |
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[CCS_CONFIG_ENFORCING] = "enforcing" |
[CCS_CONFIG_ENFORCING] = "enforcing" |
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}; |
96 |
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/* String table for /proc/ccs/profile interface. */ |
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const char * const ccs_mac_keywords[CCS_MAX_MAC_INDEX |
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+ CCS_MAX_MAC_CATEGORY_INDEX] = { |
100 |
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/* CONFIG::file group */ |
101 |
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[CCS_MAC_FILE_EXECUTE] = "execute", |
102 |
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[CCS_MAC_FILE_OPEN] = "open", |
103 |
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[CCS_MAC_FILE_CREATE] = "create", |
104 |
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[CCS_MAC_FILE_UNLINK] = "unlink", |
105 |
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[CCS_MAC_FILE_GETATTR] = "getattr", |
106 |
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[CCS_MAC_FILE_MKDIR] = "mkdir", |
107 |
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[CCS_MAC_FILE_RMDIR] = "rmdir", |
108 |
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[CCS_MAC_FILE_MKFIFO] = "mkfifo", |
109 |
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[CCS_MAC_FILE_MKSOCK] = "mksock", |
110 |
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[CCS_MAC_FILE_TRUNCATE] = "truncate", |
111 |
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[CCS_MAC_FILE_SYMLINK] = "symlink", |
112 |
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[CCS_MAC_FILE_MKBLOCK] = "mkblock", |
113 |
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[CCS_MAC_FILE_MKCHAR] = "mkchar", |
114 |
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[CCS_MAC_FILE_LINK] = "link", |
115 |
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[CCS_MAC_FILE_RENAME] = "rename", |
116 |
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[CCS_MAC_FILE_CHMOD] = "chmod", |
117 |
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[CCS_MAC_FILE_CHOWN] = "chown", |
118 |
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[CCS_MAC_FILE_CHGRP] = "chgrp", |
119 |
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[CCS_MAC_FILE_IOCTL] = "ioctl", |
120 |
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[CCS_MAC_FILE_CHROOT] = "chroot", |
121 |
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[CCS_MAC_FILE_MOUNT] = "mount", |
122 |
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[CCS_MAC_FILE_UMOUNT] = "unmount", |
123 |
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[CCS_MAC_FILE_PIVOT_ROOT] = "pivot_root", |
124 |
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/* CONFIG::misc group */ |
125 |
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[CCS_MAC_ENVIRON] = "env", |
126 |
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/* CONFIG::network group */ |
127 |
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[CCS_MAC_NETWORK_INET_STREAM_BIND] = "inet_stream_bind", |
128 |
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[CCS_MAC_NETWORK_INET_STREAM_LISTEN] = "inet_stream_listen", |
129 |
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[CCS_MAC_NETWORK_INET_STREAM_CONNECT] = "inet_stream_connect", |
130 |
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[CCS_MAC_NETWORK_INET_STREAM_ACCEPT] = "inet_stream_accept", |
131 |
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[CCS_MAC_NETWORK_INET_DGRAM_BIND] = "inet_dgram_bind", |
132 |
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[CCS_MAC_NETWORK_INET_DGRAM_SEND] = "inet_dgram_send", |
133 |
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[CCS_MAC_NETWORK_INET_DGRAM_RECV] = "inet_dgram_recv", |
134 |
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[CCS_MAC_NETWORK_INET_RAW_BIND] = "inet_raw_bind", |
135 |
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[CCS_MAC_NETWORK_INET_RAW_SEND] = "inet_raw_send", |
136 |
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[CCS_MAC_NETWORK_INET_RAW_RECV] = "inet_raw_recv", |
137 |
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[CCS_MAC_NETWORK_UNIX_STREAM_BIND] = "unix_stream_bind", |
138 |
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[CCS_MAC_NETWORK_UNIX_STREAM_LISTEN] = "unix_stream_listen", |
139 |
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[CCS_MAC_NETWORK_UNIX_STREAM_CONNECT] = "unix_stream_connect", |
140 |
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[CCS_MAC_NETWORK_UNIX_STREAM_ACCEPT] = "unix_stream_accept", |
141 |
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[CCS_MAC_NETWORK_UNIX_DGRAM_BIND] = "unix_dgram_bind", |
142 |
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[CCS_MAC_NETWORK_UNIX_DGRAM_SEND] = "unix_dgram_send", |
143 |
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[CCS_MAC_NETWORK_UNIX_DGRAM_RECV] = "unix_dgram_recv", |
144 |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_BIND] = "unix_seqpacket_bind", |
145 |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_LISTEN] = "unix_seqpacket_listen", |
146 |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_CONNECT] = "unix_seqpacket_connect", |
147 |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_ACCEPT] = "unix_seqpacket_accept", |
148 |
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/* CONFIG::ipc group */ |
149 |
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[CCS_MAC_SIGNAL] = "signal", |
150 |
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/* CONFIG::capability group */ |
151 |
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[CCS_MAC_CAPABILITY_USE_ROUTE_SOCKET] = "use_route", |
152 |
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[CCS_MAC_CAPABILITY_USE_PACKET_SOCKET] = "use_packet", |
153 |
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[CCS_MAC_CAPABILITY_SYS_REBOOT] = "SYS_REBOOT", |
154 |
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[CCS_MAC_CAPABILITY_SYS_VHANGUP] = "SYS_VHANGUP", |
155 |
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[CCS_MAC_CAPABILITY_SYS_SETTIME] = "SYS_TIME", |
156 |
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[CCS_MAC_CAPABILITY_SYS_NICE] = "SYS_NICE", |
157 |
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[CCS_MAC_CAPABILITY_SYS_SETHOSTNAME] = "SYS_SETHOSTNAME", |
158 |
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[CCS_MAC_CAPABILITY_USE_KERNEL_MODULE] = "use_kernel_module", |
159 |
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[CCS_MAC_CAPABILITY_SYS_KEXEC_LOAD] = "SYS_KEXEC_LOAD", |
160 |
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[CCS_MAC_CAPABILITY_SYS_PTRACE] = "SYS_PTRACE", |
161 |
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/* CONFIG group */ |
162 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_FILE] = "file", |
163 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_NETWORK] = "network", |
164 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_MISC] = "misc", |
165 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_IPC] = "ipc", |
166 |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
167 |
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}; |
168 |
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169 |
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/* String table for path operation. */ |
170 |
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const char * const ccs_path_keyword[CCS_MAX_PATH_OPERATION] = { |
171 |
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[CCS_TYPE_EXECUTE] = "execute", |
172 |
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[CCS_TYPE_READ] = "read", |
173 |
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[CCS_TYPE_WRITE] = "write", |
174 |
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[CCS_TYPE_APPEND] = "append", |
175 |
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[CCS_TYPE_UNLINK] = "unlink", |
176 |
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[CCS_TYPE_GETATTR] = "getattr", |
177 |
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[CCS_TYPE_RMDIR] = "rmdir", |
178 |
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[CCS_TYPE_TRUNCATE] = "truncate", |
179 |
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[CCS_TYPE_SYMLINK] = "symlink", |
180 |
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[CCS_TYPE_CHROOT] = "chroot", |
181 |
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[CCS_TYPE_UMOUNT] = "unmount", |
182 |
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}; |
183 |
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184 |
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/* String table for categories. */ |
185 |
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static const char * const ccs_category_keywords[CCS_MAX_MAC_CATEGORY_INDEX] = { |
186 |
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[CCS_MAC_CATEGORY_FILE] = "file", |
187 |
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[CCS_MAC_CATEGORY_NETWORK] = "network", |
188 |
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[CCS_MAC_CATEGORY_MISC] = "misc", |
189 |
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[CCS_MAC_CATEGORY_IPC] = "ipc", |
190 |
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[CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
191 |
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}; |
192 |
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193 |
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/* String table for conditions. */ |
194 |
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const char * const ccs_condition_keyword[CCS_MAX_CONDITION_KEYWORD] = { |
195 |
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[CCS_TASK_UID] = "task.uid", |
196 |
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[CCS_TASK_EUID] = "task.euid", |
197 |
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[CCS_TASK_SUID] = "task.suid", |
198 |
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[CCS_TASK_FSUID] = "task.fsuid", |
199 |
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[CCS_TASK_GID] = "task.gid", |
200 |
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[CCS_TASK_EGID] = "task.egid", |
201 |
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[CCS_TASK_SGID] = "task.sgid", |
202 |
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[CCS_TASK_FSGID] = "task.fsgid", |
203 |
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[CCS_TASK_PID] = "task.pid", |
204 |
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[CCS_TASK_PPID] = "task.ppid", |
205 |
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[CCS_EXEC_ARGC] = "exec.argc", |
206 |
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[CCS_EXEC_ENVC] = "exec.envc", |
207 |
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[CCS_TYPE_IS_SOCKET] = "socket", |
208 |
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[CCS_TYPE_IS_SYMLINK] = "symlink", |
209 |
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[CCS_TYPE_IS_FILE] = "file", |
210 |
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[CCS_TYPE_IS_BLOCK_DEV] = "block", |
211 |
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[CCS_TYPE_IS_DIRECTORY] = "directory", |
212 |
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[CCS_TYPE_IS_CHAR_DEV] = "char", |
213 |
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[CCS_TYPE_IS_FIFO] = "fifo", |
214 |
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[CCS_MODE_SETUID] = "setuid", |
215 |
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[CCS_MODE_SETGID] = "setgid", |
216 |
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[CCS_MODE_STICKY] = "sticky", |
217 |
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[CCS_MODE_OWNER_READ] = "owner_read", |
218 |
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[CCS_MODE_OWNER_WRITE] = "owner_write", |
219 |
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[CCS_MODE_OWNER_EXECUTE] = "owner_execute", |
220 |
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[CCS_MODE_GROUP_READ] = "group_read", |
221 |
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[CCS_MODE_GROUP_WRITE] = "group_write", |
222 |
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[CCS_MODE_GROUP_EXECUTE] = "group_execute", |
223 |
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[CCS_MODE_OTHERS_READ] = "others_read", |
224 |
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[CCS_MODE_OTHERS_WRITE] = "others_write", |
225 |
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[CCS_MODE_OTHERS_EXECUTE] = "others_execute", |
226 |
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[CCS_TASK_TYPE] = "task.type", |
227 |
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[CCS_TASK_EXECUTE_HANDLER] = "execute_handler", |
228 |
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[CCS_EXEC_REALPATH] = "exec.realpath", |
229 |
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[CCS_SYMLINK_TARGET] = "symlink.target", |
230 |
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[CCS_PATH1_UID] = "path1.uid", |
231 |
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[CCS_PATH1_GID] = "path1.gid", |
232 |
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[CCS_PATH1_INO] = "path1.ino", |
233 |
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[CCS_PATH1_MAJOR] = "path1.major", |
234 |
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[CCS_PATH1_MINOR] = "path1.minor", |
235 |
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[CCS_PATH1_PERM] = "path1.perm", |
236 |
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[CCS_PATH1_TYPE] = "path1.type", |
237 |
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[CCS_PATH1_DEV_MAJOR] = "path1.dev_major", |
238 |
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[CCS_PATH1_DEV_MINOR] = "path1.dev_minor", |
239 |
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[CCS_PATH2_UID] = "path2.uid", |
240 |
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[CCS_PATH2_GID] = "path2.gid", |
241 |
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[CCS_PATH2_INO] = "path2.ino", |
242 |
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[CCS_PATH2_MAJOR] = "path2.major", |
243 |
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[CCS_PATH2_MINOR] = "path2.minor", |
244 |
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[CCS_PATH2_PERM] = "path2.perm", |
245 |
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[CCS_PATH2_TYPE] = "path2.type", |
246 |
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[CCS_PATH2_DEV_MAJOR] = "path2.dev_major", |
247 |
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[CCS_PATH2_DEV_MINOR] = "path2.dev_minor", |
248 |
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[CCS_PATH1_PARENT_UID] = "path1.parent.uid", |
249 |
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[CCS_PATH1_PARENT_GID] = "path1.parent.gid", |
250 |
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[CCS_PATH1_PARENT_INO] = "path1.parent.ino", |
251 |
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[CCS_PATH1_PARENT_PERM] = "path1.parent.perm", |
252 |
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[CCS_PATH2_PARENT_UID] = "path2.parent.uid", |
253 |
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[CCS_PATH2_PARENT_GID] = "path2.parent.gid", |
254 |
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[CCS_PATH2_PARENT_INO] = "path2.parent.ino", |
255 |
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[CCS_PATH2_PARENT_PERM] = "path2.parent.perm", |
256 |
}; |
}; |
257 |
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|
258 |
/* String table for /proc/ccs/profile */ |
/* String table for PREFERENCE keyword. */ |
259 |
static const char *ccs_mac_keywords[CCS_MAX_MAC_INDEX + |
static const char * const ccs_pref_keywords[CCS_MAX_PREF] = { |
260 |
CCS_MAX_CAPABILITY_INDEX + |
[CCS_PREF_MAX_AUDIT_LOG] = "max_audit_log", |
261 |
CCS_MAX_MAC_CATEGORY_INDEX] = { |
[CCS_PREF_MAX_LEARNING_ENTRY] = "max_learning_entry", |
262 |
[CCS_MAC_FILE_EXECUTE] |
[CCS_PREF_ENFORCING_PENALTY] = "enforcing_penalty", |
|
= "file::execute", |
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[CCS_MAC_FILE_OPEN] |
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= "file::open", |
|
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[CCS_MAC_FILE_CREATE] |
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= "file::create", |
|
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[CCS_MAC_FILE_UNLINK] |
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= "file::unlink", |
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[CCS_MAC_FILE_MKDIR] |
|
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= "file::mkdir", |
|
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[CCS_MAC_FILE_RMDIR] |
|
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= "file::rmdir", |
|
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[CCS_MAC_FILE_MKFIFO] |
|
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= "file::mkfifo", |
|
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[CCS_MAC_FILE_MKSOCK] |
|
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= "file::mksock", |
|
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[CCS_MAC_FILE_TRUNCATE] |
|
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= "file::truncate", |
|
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[CCS_MAC_FILE_SYMLINK] |
|
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= "file::symlink", |
|
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[CCS_MAC_FILE_MKBLOCK] |
|
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= "file::mkblock", |
|
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[CCS_MAC_FILE_MKCHAR] |
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= "file::mkchar", |
|
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[CCS_MAC_FILE_LINK] |
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= "file::link", |
|
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[CCS_MAC_FILE_RENAME] |
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= "file::rename", |
|
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[CCS_MAC_FILE_CHMOD] |
|
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= "file::chmod", |
|
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[CCS_MAC_FILE_CHOWN] |
|
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= "file::chown", |
|
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[CCS_MAC_FILE_CHGRP] |
|
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= "file::chgrp", |
|
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[CCS_MAC_FILE_IOCTL] |
|
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= "file::ioctl", |
|
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[CCS_MAC_FILE_CHROOT] |
|
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= "file::chroot", |
|
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[CCS_MAC_FILE_MOUNT] |
|
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= "file::mount", |
|
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[CCS_MAC_FILE_UMOUNT] |
|
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= "file::umount", |
|
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[CCS_MAC_FILE_PIVOT_ROOT] |
|
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= "file::pivot_root", |
|
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[CCS_MAC_ENVIRON] |
|
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= "misc::env", |
|
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[CCS_MAC_NETWORK_INET_STREAM_BIND] |
|
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= "network::inet_stream_bind", |
|
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[CCS_MAC_NETWORK_INET_STREAM_LISTEN] |
|
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= "network::inet_stream_listen", |
|
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[CCS_MAC_NETWORK_INET_STREAM_CONNECT] |
|
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= "network::inet_stream_connect", |
|
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[CCS_MAC_NETWORK_INET_STREAM_ACCEPT] |
|
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= "network::inet_stream_accept", |
|
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[CCS_MAC_NETWORK_INET_DGRAM_BIND] |
|
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= "network::inet_dgram_bind", |
|
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[CCS_MAC_NETWORK_INET_DGRAM_SEND] |
|
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= "network::inet_dgram_send", |
|
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[CCS_MAC_NETWORK_INET_DGRAM_RECV] |
|
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= "network::inet_dgram_recv", |
|
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[CCS_MAC_NETWORK_INET_RAW_BIND] |
|
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= "network::inet_raw_bind", |
|
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[CCS_MAC_NETWORK_INET_RAW_SEND] |
|
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= "network::inet_raw_send", |
|
|
[CCS_MAC_NETWORK_INET_RAW_RECV] |
|
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= "network::inet_raw_recv", |
|
|
[CCS_MAC_NETWORK_UNIX_STREAM_BIND] |
|
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= "network::unix_stream_bind", |
|
|
[CCS_MAC_NETWORK_UNIX_STREAM_LISTEN] |
|
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= "network::unix_stream_listen", |
|
|
[CCS_MAC_NETWORK_UNIX_STREAM_CONNECT] |
|
|
= "network::unix_stream_connect", |
|
|
[CCS_MAC_NETWORK_UNIX_STREAM_ACCEPT] |
|
|
= "network::unix_stream_accept", |
|
|
[CCS_MAC_NETWORK_UNIX_DGRAM_BIND] |
|
|
= "network::unix_dgram_bind", |
|
|
[CCS_MAC_NETWORK_UNIX_DGRAM_SEND] |
|
|
= "network::unix_dgram_send", |
|
|
[CCS_MAC_NETWORK_UNIX_DGRAM_RECV] |
|
|
= "network::unix_dgram_recv", |
|
|
[CCS_MAC_NETWORK_UNIX_SEQPACKET_BIND] |
|
|
= "network::unix_seqpacket_bind", |
|
|
[CCS_MAC_NETWORK_UNIX_SEQPACKET_LISTEN] |
|
|
= "network::unix_seqpacket_listen", |
|
|
[CCS_MAC_NETWORK_UNIX_SEQPACKET_CONNECT] |
|
|
= "network::unix_seqpacket_connect", |
|
|
[CCS_MAC_NETWORK_UNIX_SEQPACKET_ACCEPT] |
|
|
= "network::unix_seqpacket_accept", |
|
|
[CCS_MAC_SIGNAL] |
|
|
= "ipc::signal", |
|
|
[CCS_MAX_MAC_INDEX + CCS_USE_ROUTE_SOCKET] |
|
|
= "capability::use_route", |
|
|
[CCS_MAX_MAC_INDEX + CCS_USE_PACKET_SOCKET] |
|
|
= "capability::use_packet", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_REBOOT] |
|
|
= "capability::SYS_REBOOT", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_VHANGUP] |
|
|
= "capability::SYS_VHANGUP", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SETTIME] |
|
|
= "capability::SYS_TIME", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_NICE] |
|
|
= "capability::SYS_NICE", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_SETHOSTNAME] |
|
|
= "capability::SYS_SETHOSTNAME", |
|
|
[CCS_MAX_MAC_INDEX + CCS_USE_KERNEL_MODULE] |
|
|
= "capability::use_kernel_module", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_KEXEC_LOAD] |
|
|
= "capability::SYS_KEXEC_LOAD", |
|
|
[CCS_MAX_MAC_INDEX + CCS_SYS_PTRACE] |
|
|
= "capability::SYS_PTRACE", |
|
|
[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", |
|
263 |
}; |
}; |
264 |
|
|
265 |
/* Permit policy management by non-root user? */ |
/* Permit policy management by non-root user? */ |
266 |
static bool ccs_manage_by_non_root; |
static bool ccs_manage_by_non_root; |
267 |
|
|
268 |
/** |
/** |
269 |
* ccs_cap2keyword - Convert capability operation to capability name. |
* ccs_yesno - Return "yes" or "no". |
270 |
* |
* |
271 |
* @operation: The capability index. |
* @value: Bool value. |
272 |
* |
* |
273 |
* Returns the name of the specified capability's name. |
* Returns "yes" if @value is not 0, "no" otherwise. |
274 |
*/ |
*/ |
275 |
const char *ccs_cap2keyword(const u8 operation) |
const char *ccs_yesno(const unsigned int value) |
276 |
{ |
{ |
277 |
return operation < CCS_MAX_CAPABILITY_INDEX |
return value ? "yes" : "no"; |
|
? ccs_mac_keywords[CCS_MAX_MAC_INDEX + operation] + 12 : NULL; |
|
278 |
} |
} |
279 |
|
|
280 |
|
/* Prototype fpr ccs_addprintf(). */ |
281 |
|
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
282 |
|
__attribute__ ((format(printf, 3, 4))); |
283 |
|
|
284 |
/** |
/** |
285 |
* ccs_yesno - Return "yes" or "no". |
* ccs_addprintf - strncat()-like-snprintf(). |
286 |
* |
* |
287 |
* @value: Bool value. |
* @buffer: Buffer to write to. Must be '\0'-terminated. |
288 |
|
* @len: Size of @buffer. |
289 |
|
* @fmt: The printf()'s format string, followed by parameters. |
290 |
|
* |
291 |
|
* Returns nothing. |
292 |
*/ |
*/ |
|
static const char *ccs_yesno(const unsigned int value) |
|
|
{ |
|
|
return value ? "yes" : "no"; |
|
|
} |
|
|
|
|
293 |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
294 |
{ |
{ |
295 |
va_list args; |
va_list args; |
302 |
/** |
/** |
303 |
* ccs_flush - Flush queued string to userspace's buffer. |
* ccs_flush - Flush queued string to userspace's buffer. |
304 |
* |
* |
305 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
306 |
* |
* |
307 |
* Returns true if all data was flushed, false otherwise. |
* Returns true if all data was flushed, false otherwise. |
308 |
*/ |
*/ |
348 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
349 |
* @string: String to print. |
* @string: String to print. |
350 |
* |
* |
351 |
|
* Returns nothing. |
352 |
|
* |
353 |
* Note that @string has to be kept valid until @head is kfree()d. |
* Note that @string has to be kept valid until @head is kfree()d. |
354 |
* This means that char[] allocated on stack memory cannot be passed to |
* This means that char[] allocated on stack memory cannot be passed to |
355 |
* this function. Use ccs_io_printf() for char[] allocated on stack memory. |
* this function. Use ccs_io_printf() for char[] allocated on stack memory. |
368 |
* |
* |
369 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
370 |
* @fmt: The printf()'s format string, followed by parameters. |
* @fmt: The printf()'s format string, followed by parameters. |
371 |
|
* |
372 |
|
* Returns nothing. |
373 |
*/ |
*/ |
374 |
void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
375 |
{ |
{ |
390 |
ccs_set_string(head, head->read_buf + pos); |
ccs_set_string(head, head->read_buf + pos); |
391 |
} |
} |
392 |
|
|
393 |
|
/** |
394 |
|
* ccs_set_space - Put a space to "struct ccs_io_buffer" structure. |
395 |
|
* |
396 |
|
* @head: Pointer to "struct ccs_io_buffer". |
397 |
|
* |
398 |
|
* Returns nothing. |
399 |
|
*/ |
400 |
static void ccs_set_space(struct ccs_io_buffer *head) |
static void ccs_set_space(struct ccs_io_buffer *head) |
401 |
{ |
{ |
402 |
ccs_set_string(head, " "); |
ccs_set_string(head, " "); |
403 |
} |
} |
404 |
|
|
405 |
|
/** |
406 |
|
* ccs_set_lf - Put a line feed to "struct ccs_io_buffer" structure. |
407 |
|
* |
408 |
|
* @head: Pointer to "struct ccs_io_buffer". |
409 |
|
* |
410 |
|
* Returns nothing. |
411 |
|
*/ |
412 |
static bool ccs_set_lf(struct ccs_io_buffer *head) |
static bool ccs_set_lf(struct ccs_io_buffer *head) |
413 |
{ |
{ |
414 |
ccs_set_string(head, "\n"); |
ccs_set_string(head, "\n"); |
438 |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
439 |
ptr = entry; |
ptr = entry; |
440 |
ptr->default_config = CCS_CONFIG_DISABLED | |
ptr->default_config = CCS_CONFIG_DISABLED | |
|
CCS_CONFIG_VERBOSE | |
|
441 |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
442 |
memset(ptr->config, CCS_CONFIG_USE_DEFAULT, |
memset(ptr->config, CCS_CONFIG_USE_DEFAULT, |
443 |
sizeof(ptr->config)); |
sizeof(ptr->config)); |
444 |
|
ptr->pref[CCS_PREF_MAX_AUDIT_LOG] = |
445 |
|
CONFIG_CCSECURITY_MAX_AUDIT_LOG; |
446 |
|
ptr->pref[CCS_PREF_MAX_LEARNING_ENTRY] = |
447 |
|
CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY; |
448 |
mb(); /* Avoid out-of-order execution. */ |
mb(); /* Avoid out-of-order execution. */ |
449 |
ccs_profile_ptr[profile] = ptr; |
ccs_profile_ptr[profile] = ptr; |
450 |
entry = NULL; |
entry = NULL; |
451 |
} |
} |
452 |
mutex_unlock(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
453 |
out: |
out: |
454 |
kfree(entry); |
kfree(entry); |
455 |
return ptr; |
return ptr; |
456 |
} |
} |
457 |
|
|
458 |
/** |
/** |
459 |
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
460 |
|
* |
461 |
|
* Returns nothing. |
462 |
*/ |
*/ |
463 |
static void ccs_check_profile(void) |
static void ccs_check_profile(void) |
464 |
{ |
{ |
465 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
466 |
const int idx = ccs_read_lock(); |
const int idx = ccs_read_lock(); |
467 |
ccs_policy_loaded = true; |
ccs_policy_loaded = true; |
468 |
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
469 |
const u8 profile = domain->profile; |
const u8 profile = domain->profile; |
470 |
if (ccs_profile_ptr[profile]) |
if (ccs_profile_ptr[profile]) |
471 |
continue; |
continue; |
472 |
|
printk(KERN_ERR "Profile %u must be defined before using it.\n", |
473 |
|
profile); |
474 |
|
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
475 |
|
"for more information.\n"); |
476 |
panic("Profile %u (used by '%s') not defined.\n", |
panic("Profile %u (used by '%s') not defined.\n", |
477 |
profile, domain->domainname->name); |
profile, domain->domainname->name); |
478 |
} |
} |
479 |
ccs_read_unlock(idx); |
ccs_read_unlock(idx); |
480 |
if (ccs_profile_version != 20100903) |
if (ccs_profile_version != 20100903) { |
481 |
|
printk(KERN_ERR "Userland tools must be installed for " |
482 |
|
"TOMOYO 1.8, and policy must be initialized.\n"); |
483 |
|
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
484 |
|
"for more information.\n"); |
485 |
panic("Profile version %u is not supported.\n", |
panic("Profile version %u is not supported.\n", |
486 |
ccs_profile_version); |
ccs_profile_version); |
487 |
printk(KERN_INFO "CCSecurity: 1.8.0-pre 2010/09/01\n"); |
} |
488 |
|
printk(KERN_INFO "CCSecurity: 1.8.0+ 2010/12/31\n"); |
489 |
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
490 |
} |
} |
491 |
|
|
498 |
*/ |
*/ |
499 |
struct ccs_profile *ccs_profile(const u8 profile) |
struct ccs_profile *ccs_profile(const u8 profile) |
500 |
{ |
{ |
501 |
|
static struct ccs_profile ccs_null_profile; |
502 |
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
503 |
if (!ccs_policy_loaded) |
if (!ptr) |
504 |
return &ccs_default_profile; |
ptr = &ccs_null_profile; |
|
BUG_ON(!ptr); |
|
505 |
return ptr; |
return ptr; |
506 |
} |
} |
507 |
|
|
508 |
|
/** |
509 |
|
* ccs_find_yesno - Find values for specified keyword. |
510 |
|
* |
511 |
|
* @string: String to check. |
512 |
|
* @find: Name of keyword. |
513 |
|
* |
514 |
|
* Returns 1 if "@find=yes" was found, 0 if "@find=no" was found, -1 otherwise. |
515 |
|
*/ |
516 |
static s8 ccs_find_yesno(const char *string, const char *find) |
static s8 ccs_find_yesno(const char *string, const char *find) |
517 |
{ |
{ |
518 |
const char *cp = strstr(string, find); |
const char *cp = strstr(string, find); |
526 |
return -1; |
return -1; |
527 |
} |
} |
528 |
|
|
529 |
static void ccs_set_bool(bool *b, const char *string, const char *find) |
/** |
530 |
{ |
* ccs_set_uint - Set value for specified preference. |
531 |
switch (ccs_find_yesno(string, find)) { |
* |
532 |
case 1: |
* @i: Pointer to "unsigned int". |
533 |
*b = true; |
* @string: String to check. |
534 |
break; |
* @find: Name of keyword. |
535 |
case 0: |
* |
536 |
*b = false; |
* Returns nothing. |
537 |
break; |
*/ |
|
} |
|
|
} |
|
|
|
|
538 |
static void ccs_set_uint(unsigned int *i, const char *string, const char *find) |
static void ccs_set_uint(unsigned int *i, const char *string, const char *find) |
539 |
{ |
{ |
540 |
const char *cp = strstr(string, find); |
const char *cp = strstr(string, find); |
542 |
sscanf(cp + strlen(find), "=%u", i); |
sscanf(cp + strlen(find), "=%u", i); |
543 |
} |
} |
544 |
|
|
545 |
static void ccs_set_pref(const char *name, const char *value, |
/** |
546 |
struct ccs_profile *profile) |
* ccs_set_mode - Set mode for specified profile. |
547 |
{ |
* |
548 |
if (!strcmp(name, "audit")) { |
* @name: Name of functionality. |
549 |
#ifdef CONFIG_CCSECURITY_AUDIT |
* @value: Mode for @name. |
550 |
ccs_set_uint(&profile->preference.audit_max_grant_log, value, |
* @profile: Pointer to "struct ccs_profile". |
551 |
"max_grant_log"); |
* |
552 |
ccs_set_uint(&profile->preference.audit_max_reject_log, value, |
* Returns 0 on success, negative value otherwise. |
553 |
"max_reject_log"); |
*/ |
|
#endif |
|
|
ccs_set_bool(&profile->preference.audit_task_info, value, |
|
|
"task_info"); |
|
|
ccs_set_bool(&profile->preference.audit_path_info, value, |
|
|
"path_info"); |
|
|
return; |
|
|
} |
|
|
if (!strcmp(name, "enforcing")) { |
|
|
ccs_set_uint(&profile->preference.enforcing_penalty, value, |
|
|
"penalty"); |
|
|
return; |
|
|
} |
|
|
if (!strcmp(name, "learning")) { |
|
|
ccs_set_uint(&profile->preference.learning_max_entry, value, |
|
|
"max_entry"); |
|
|
ccs_set_bool(&profile->preference.learning_exec_realpath, |
|
|
value, "exec.realpath"); |
|
|
ccs_set_bool(&profile->preference.learning_exec_argv0, value, |
|
|
"exec.argv0"); |
|
|
ccs_set_bool(&profile->preference.learning_symlink_target, |
|
|
value, "symlink.target"); |
|
|
return; |
|
|
} |
|
|
} |
|
|
|
|
554 |
static int ccs_set_mode(char *name, const char *value, |
static int ccs_set_mode(char *name, const char *value, |
555 |
struct ccs_profile *profile) |
struct ccs_profile *profile) |
556 |
{ |
{ |
557 |
u8 i; |
u8 i; |
558 |
u8 config; |
u8 config; |
559 |
if (!strcmp(name, "CONFIG")) { |
if (!strcmp(name, "CONFIG")) { |
560 |
i = CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX |
i = CCS_MAX_MAC_INDEX + CCS_MAX_MAC_CATEGORY_INDEX; |
|
+ CCS_MAX_MAC_CATEGORY_INDEX; |
|
561 |
config = profile->default_config; |
config = profile->default_config; |
562 |
} else if (ccs_str_starts(&name, "CONFIG::")) { |
} else if (ccs_str_starts(&name, "CONFIG::")) { |
563 |
config = 0; |
config = 0; |
564 |
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; |
565 |
+ CCS_MAX_MAC_CATEGORY_INDEX; i++) { |
i++) { |
566 |
if (strcmp(name, ccs_mac_keywords[i])) |
int len = 0; |
567 |
|
if (i < CCS_MAX_MAC_INDEX) { |
568 |
|
const u8 c = ccs_index2category[i]; |
569 |
|
const char *category = |
570 |
|
ccs_category_keywords[c]; |
571 |
|
len = strlen(category); |
572 |
|
if (strncmp(name, category, len) || |
573 |
|
name[len++] != ':' || name[len++] != ':') |
574 |
|
continue; |
575 |
|
} |
576 |
|
if (strcmp(name + len, ccs_mac_keywords[i])) |
577 |
continue; |
continue; |
578 |
config = profile->config[i]; |
config = profile->config[i]; |
579 |
break; |
break; |
580 |
} |
} |
581 |
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) |
|
582 |
return -EINVAL; |
return -EINVAL; |
583 |
} else { |
} else { |
584 |
return -EINVAL; |
return -EINVAL; |
595 |
*/ |
*/ |
596 |
config = (config & ~7) | mode; |
config = (config & ~7) | mode; |
597 |
if (config != CCS_CONFIG_USE_DEFAULT) { |
if (config != CCS_CONFIG_USE_DEFAULT) { |
|
switch (ccs_find_yesno(value, "verbose")) { |
|
|
case 1: |
|
|
config |= CCS_CONFIG_VERBOSE; |
|
|
break; |
|
|
case 0: |
|
|
config &= ~CCS_CONFIG_VERBOSE; |
|
|
break; |
|
|
} |
|
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
598 |
switch (ccs_find_yesno(value, "grant_log")) { |
switch (ccs_find_yesno(value, "grant_log")) { |
599 |
case 1: |
case 1: |
600 |
config |= CCS_CONFIG_WANT_GRANT_LOG; |
config |= CCS_CONFIG_WANT_GRANT_LOG; |
611 |
config &= ~CCS_CONFIG_WANT_REJECT_LOG; |
config &= ~CCS_CONFIG_WANT_REJECT_LOG; |
612 |
break; |
break; |
613 |
} |
} |
|
#endif |
|
614 |
} |
} |
615 |
} |
} |
616 |
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) |
|
617 |
profile->config[i] = config; |
profile->config[i] = config; |
618 |
else if (config != CCS_CONFIG_USE_DEFAULT) |
else if (config != CCS_CONFIG_USE_DEFAULT) |
619 |
profile->default_config = config; |
profile->default_config = config; |
646 |
if (!cp) |
if (!cp) |
647 |
return -EINVAL; |
return -EINVAL; |
648 |
*cp++ = '\0'; |
*cp++ = '\0'; |
|
if (ccs_str_starts(&data, "PREFERENCE::")) { |
|
|
ccs_set_pref(data, cp, profile); |
|
|
return 0; |
|
|
} |
|
649 |
if (!strcmp(data, "COMMENT")) { |
if (!strcmp(data, "COMMENT")) { |
650 |
const struct ccs_path_info *old_comment = profile->comment; |
const struct ccs_path_info *old_comment = profile->comment; |
651 |
profile->comment = ccs_get_name(cp); |
profile->comment = ccs_get_name(cp); |
652 |
ccs_put_name(old_comment); |
ccs_put_name(old_comment); |
653 |
return 0; |
return 0; |
654 |
} |
} |
655 |
|
if (!strcmp(data, "PREFERENCE")) { |
656 |
|
for (i = 0; i < CCS_MAX_PREF; i++) |
657 |
|
ccs_set_uint(&profile->pref[i], cp, |
658 |
|
ccs_pref_keywords[i]); |
659 |
|
return 0; |
660 |
|
} |
661 |
return ccs_set_mode(data, cp, profile); |
return ccs_set_mode(data, cp, profile); |
662 |
} |
} |
663 |
|
|
664 |
static void ccs_print_preference(struct ccs_io_buffer *head, const int index) |
/** |
665 |
{ |
* ccs_print_config - Print mode for specified functionality. |
666 |
struct ccs_profile *profile = ccs_profile_ptr[index]; |
* |
667 |
struct ccs_preference *pref = &profile->preference; |
* @head: Pointer to "struct ccs_io_buffer". |
668 |
ccs_io_printf(head, "%u-PREFERENCE::%s={ " |
* @config: Mode for that functionality. |
669 |
#ifdef CONFIG_CCSECURITY_AUDIT |
* |
670 |
"max_grant_log=%u max_reject_log=%u " |
* Returns nothing. |
671 |
#endif |
* |
672 |
"task_info=%s path_info=%s }\n", index, |
* Caller prints functionality's name. |
673 |
"audit", |
*/ |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
|
pref->audit_max_grant_log, |
|
|
pref->audit_max_reject_log, |
|
|
#endif |
|
|
ccs_yesno(pref->audit_task_info), |
|
|
ccs_yesno(pref->audit_path_info)); |
|
|
ccs_io_printf(head, "%u-PREFERENCE::%s={ " |
|
|
"max_entry=%u exec.realpath=%s " |
|
|
"exec.argv0=%s symlink.target=%s }\n", |
|
|
index, "learning", |
|
|
pref->learning_max_entry, |
|
|
ccs_yesno(pref->learning_exec_realpath), |
|
|
ccs_yesno(pref->learning_exec_argv0), |
|
|
ccs_yesno(pref->learning_symlink_target)); |
|
|
ccs_io_printf(head, "%u-PREFERENCE::%s={ penalty=%u }\n", index, |
|
|
"enforcing", pref->enforcing_penalty); |
|
|
} |
|
|
|
|
674 |
static void ccs_print_config(struct ccs_io_buffer *head, const u8 config) |
static void ccs_print_config(struct ccs_io_buffer *head, const u8 config) |
675 |
{ |
{ |
676 |
ccs_io_printf(head, "={ mode=%s verbose=%s", ccs_mode[config & 3], |
ccs_io_printf(head, "={ mode=%s grant_log=%s reject_log=%s }\n", |
677 |
ccs_yesno(config & CCS_CONFIG_VERBOSE)); |
ccs_mode[config & 3], |
|
#ifdef CONFIG_CCSECURITY_AUDIT |
|
|
ccs_io_printf(head, " grant_log=%s reject_log=%s", |
|
678 |
ccs_yesno(config & CCS_CONFIG_WANT_GRANT_LOG), |
ccs_yesno(config & CCS_CONFIG_WANT_GRANT_LOG), |
679 |
ccs_yesno(config & CCS_CONFIG_WANT_REJECT_LOG)); |
ccs_yesno(config & CCS_CONFIG_WANT_REJECT_LOG)); |
|
#endif |
|
|
ccs_set_string(head, " }\n"); |
|
680 |
} |
} |
681 |
|
|
682 |
/** |
/** |
683 |
* ccs_read_profile - Read profile table. |
* ccs_read_profile - Read profile table. |
684 |
* |
* |
685 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
686 |
|
* |
687 |
|
* Returns nothing. |
688 |
*/ |
*/ |
689 |
static void ccs_read_profile(struct ccs_io_buffer *head) |
static void ccs_read_profile(struct ccs_io_buffer *head) |
690 |
{ |
{ |
691 |
u8 index; |
u8 index; |
692 |
const struct ccs_profile *profile; |
const struct ccs_profile *profile; |
693 |
next: |
next: |
694 |
index = head->r.index; |
index = head->r.index; |
695 |
profile = ccs_profile_ptr[index]; |
profile = ccs_profile_ptr[index]; |
696 |
switch (head->r.step) { |
switch (head->r.step) { |
709 |
break; |
break; |
710 |
case 2: |
case 2: |
711 |
{ |
{ |
712 |
|
u8 i; |
713 |
const struct ccs_path_info *comment = profile->comment; |
const struct ccs_path_info *comment = profile->comment; |
714 |
ccs_io_printf(head, "%u-COMMENT=", index); |
ccs_io_printf(head, "%u-COMMENT=", index); |
715 |
ccs_set_string(head, comment ? comment->name : ""); |
ccs_set_string(head, comment ? comment->name : ""); |
716 |
ccs_set_lf(head); |
ccs_set_lf(head); |
717 |
|
ccs_io_printf(head, "%u-PREFERENCE={ ", index); |
718 |
|
for (i = 0; i < CCS_MAX_PREF; i++) |
719 |
|
ccs_io_printf(head, "%s=%u ", |
720 |
|
ccs_pref_keywords[i], |
721 |
|
profile->pref[i]); |
722 |
|
ccs_set_string(head, " }\n"); |
723 |
head->r.step++; |
head->r.step++; |
724 |
} |
} |
725 |
break; |
break; |
733 |
break; |
break; |
734 |
case 4: |
case 4: |
735 |
for ( ; head->r.bit < CCS_MAX_MAC_INDEX |
for ( ; head->r.bit < CCS_MAX_MAC_INDEX |
|
+ CCS_MAX_CAPABILITY_INDEX |
|
736 |
+ CCS_MAX_MAC_CATEGORY_INDEX; head->r.bit++) { |
+ CCS_MAX_MAC_CATEGORY_INDEX; head->r.bit++) { |
737 |
const u8 i = head->r.bit; |
const u8 i = head->r.bit; |
738 |
const u8 config = profile->config[i]; |
const u8 config = profile->config[i]; |
739 |
if (config == CCS_CONFIG_USE_DEFAULT) |
if (config == CCS_CONFIG_USE_DEFAULT) |
740 |
continue; |
continue; |
741 |
ccs_io_printf(head, "%u-%s%s", index, "CONFIG::", |
if (i < CCS_MAX_MAC_INDEX) |
742 |
ccs_mac_keywords[i]); |
ccs_io_printf(head, "%u-CONFIG::%s::%s", index, |
743 |
|
ccs_category_keywords |
744 |
|
[ccs_index2category[i]], |
745 |
|
ccs_mac_keywords[i]); |
746 |
|
else |
747 |
|
ccs_io_printf(head, "%u-CONFIG::%s", index, |
748 |
|
ccs_mac_keywords[i]); |
749 |
ccs_print_config(head, config); |
ccs_print_config(head, config); |
750 |
head->r.bit++; |
head->r.bit++; |
751 |
break; |
break; |
752 |
} |
} |
753 |
if (head->r.bit == CCS_MAX_MAC_INDEX |
if (head->r.bit == CCS_MAX_MAC_INDEX |
|
+ CCS_MAX_CAPABILITY_INDEX |
|
754 |
+ CCS_MAX_MAC_CATEGORY_INDEX) { |
+ CCS_MAX_MAC_CATEGORY_INDEX) { |
|
ccs_print_preference(head, index); |
|
755 |
head->r.index++; |
head->r.index++; |
756 |
head->r.step = 1; |
head->r.step = 1; |
757 |
} |
} |
761 |
goto next; |
goto next; |
762 |
} |
} |
763 |
|
|
764 |
|
/** |
765 |
|
* ccs_same_manager - Check for duplicated "struct ccs_manager" entry. |
766 |
|
* |
767 |
|
* @a: Pointer to "struct ccs_acl_head". |
768 |
|
* @b: Pointer to "struct ccs_acl_head". |
769 |
|
* |
770 |
|
* Returns true if @a == @b, false otherwise. |
771 |
|
*/ |
772 |
static bool ccs_same_manager(const struct ccs_acl_head *a, |
static bool ccs_same_manager(const struct ccs_acl_head *a, |
773 |
const struct ccs_acl_head *b) |
const struct ccs_acl_head *b) |
774 |
{ |
{ |
816 |
static int ccs_write_manager(struct ccs_io_buffer *head) |
static int ccs_write_manager(struct ccs_io_buffer *head) |
817 |
{ |
{ |
818 |
char *data = head->write_buf; |
char *data = head->write_buf; |
819 |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
bool is_delete = ccs_str_starts(&data, "delete "); |
820 |
if (!strcmp(data, "manage_by_non_root")) { |
if (!strcmp(data, "manage_by_non_root")) { |
821 |
ccs_manage_by_non_root = !is_delete; |
ccs_manage_by_non_root = !is_delete; |
822 |
return 0; |
return 0; |
829 |
* |
* |
830 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
831 |
* |
* |
832 |
|
* Returns nothing. |
833 |
|
* |
834 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
835 |
*/ |
*/ |
836 |
static void ccs_read_manager(struct ccs_io_buffer *head) |
static void ccs_read_manager(struct ccs_io_buffer *head) |
862 |
{ |
{ |
863 |
struct ccs_manager *ptr; |
struct ccs_manager *ptr; |
864 |
const char *exe; |
const char *exe; |
865 |
struct task_struct *task = current; |
struct ccs_security *task = ccs_current_security(); |
866 |
const struct ccs_path_info *domainname |
const struct ccs_path_info *domainname |
867 |
= ccs_current_domain()->domainname; |
= ccs_current_domain()->domainname; |
868 |
bool found = false; |
bool found = false; |
873 |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
874 |
return false; |
return false; |
875 |
exe = ccs_get_exe(); |
exe = ccs_get_exe(); |
876 |
list_for_each_entry_rcu(ptr, &ccs_policy_list[CCS_ID_MANAGER], |
list_for_each_entry_srcu(ptr, &ccs_policy_list[CCS_ID_MANAGER], |
877 |
head.list) { |
head.list, &ccs_ss) { |
878 |
if (ptr->head.is_deleted) |
if (ptr->head.is_deleted) |
879 |
continue; |
continue; |
880 |
if (ptr->is_domain) { |
if (ptr->is_domain) { |
903 |
} |
} |
904 |
|
|
905 |
/** |
/** |
|
* ccs_find_condition_part - Find condition part from the statement. |
|
|
* |
|
|
* @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'; |
|
|
cp += 4; |
|
|
} |
|
|
return cp; |
|
|
} |
|
|
|
|
|
/** |
|
906 |
* ccs_select_one - Parse select command. |
* ccs_select_one - Parse select command. |
907 |
* |
* |
908 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
958 |
return true; |
return true; |
959 |
} |
} |
960 |
|
|
961 |
|
/** |
962 |
|
* ccs_same_handler_acl - Check for duplicated "struct ccs_handler_acl" entry. |
963 |
|
* |
964 |
|
* @a: Pointer to "struct ccs_acl_info". |
965 |
|
* @b: Pointer to "struct ccs_acl_info". |
966 |
|
* |
967 |
|
* Returns true if @a == @b, false otherwise. |
968 |
|
*/ |
969 |
static bool ccs_same_handler_acl(const struct ccs_acl_info *a, |
static bool ccs_same_handler_acl(const struct ccs_acl_info *a, |
970 |
const struct ccs_acl_info *b) |
const struct ccs_acl_info *b) |
971 |
{ |
{ |
972 |
const struct ccs_handler_acl *p1 = container_of(a, typeof(*p1), head); |
const struct ccs_handler_acl *p1 = container_of(a, typeof(*p1), head); |
973 |
const struct ccs_handler_acl *p2 = container_of(b, typeof(*p2), head); |
const struct ccs_handler_acl *p2 = container_of(b, typeof(*p2), head); |
974 |
return ccs_same_acl_head(&p1->head, &p2->head) && |
return p1->handler == p2->handler; |
|
p1->handler == p2->handler; |
|
975 |
} |
} |
976 |
|
|
977 |
|
/** |
978 |
|
* ccs_same_task_acl - Check for duplicated "struct ccs_task_acl" entry. |
979 |
|
* |
980 |
|
* @a: Pointer to "struct ccs_acl_info". |
981 |
|
* @b: Pointer to "struct ccs_acl_info". |
982 |
|
* |
983 |
|
* Returns true if @a == @b, false otherwise. |
984 |
|
*/ |
985 |
static bool ccs_same_task_acl(const struct ccs_acl_info *a, |
static bool ccs_same_task_acl(const struct ccs_acl_info *a, |
986 |
const struct ccs_acl_info *b) |
const struct ccs_acl_info *b) |
987 |
{ |
{ |
988 |
const struct ccs_task_acl *p1 = container_of(a, typeof(*p1), head); |
const struct ccs_task_acl *p1 = container_of(a, typeof(*p1), head); |
989 |
const struct ccs_task_acl *p2 = container_of(b, typeof(*p2), head); |
const struct ccs_task_acl *p2 = container_of(b, typeof(*p2), head); |
990 |
return ccs_same_acl_head(&p1->head, &p2->head) && |
return p1->domainname == p2->domainname; |
|
p1->domainname == p2->domainname; |
|
991 |
} |
} |
992 |
|
|
993 |
/** |
/** |
994 |
* ccs_write_task - Update task related list. |
* ccs_write_task - Update task related list. |
995 |
* |
* |
996 |
* @data: String to parse. |
* @param: Pointer to "struct ccs_acl_param". |
|
* @domain: Pointer to "struct ccs_domain_info". |
|
|
* @condition: Pointer to "struct ccs_condition". Maybe NULL. |
|
|
* @is_delete: True if it is a delete request. |
|
997 |
* |
* |
998 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
999 |
*/ |
*/ |
1000 |
static int ccs_write_task(char *data, struct ccs_domain_info *domain, |
static int ccs_write_task(struct ccs_acl_param *param) |
|
struct ccs_condition *condition, |
|
|
const bool is_delete) |
|
1001 |
{ |
{ |
1002 |
int error; |
int error; |
1003 |
const bool is_auto = ccs_str_starts(&data, "auto_domain_transition "); |
const bool is_auto = ccs_str_starts(¶m->data, |
1004 |
if (!is_auto && !ccs_str_starts(&data, "manual_domain_transition ")) { |
"auto_domain_transition "); |
1005 |
struct ccs_handler_acl e = { |
if (!is_auto && !ccs_str_starts(¶m->data, |
1006 |
.head.cond = condition, |
"manual_domain_transition ")) { |
1007 |
}; |
struct ccs_handler_acl e = { }; |
1008 |
if (ccs_str_starts(&data, "auto_execute_handler ")) |
char *handler; |
1009 |
|
if (ccs_str_starts(¶m->data, "auto_execute_handler ")) |
1010 |
e.head.type = CCS_TYPE_AUTO_EXECUTE_HANDLER; |
e.head.type = CCS_TYPE_AUTO_EXECUTE_HANDLER; |
1011 |
else if (ccs_str_starts(&data, "denied_execute_handler ")) |
else if (ccs_str_starts(¶m->data, |
1012 |
|
"denied_execute_handler ")) |
1013 |
e.head.type = CCS_TYPE_DENIED_EXECUTE_HANDLER; |
e.head.type = CCS_TYPE_DENIED_EXECUTE_HANDLER; |
1014 |
else |
else |
1015 |
return -EINVAL; |
return -EINVAL; |
1016 |
if (!ccs_correct_path(data)) |
handler = ccs_read_token(param); |
1017 |
|
if (!ccs_correct_path(handler)) |
1018 |
return -EINVAL; |
return -EINVAL; |
1019 |
e.handler = ccs_get_name(data); |
e.handler = ccs_get_name(handler); |
1020 |
if (!e.handler) |
if (!e.handler) |
1021 |
return -ENOMEM; |
return -ENOMEM; |
1022 |
if (e.handler->is_patterned) |
if (e.handler->is_patterned) |
1023 |
error = -EINVAL; /* No patterns allowed. */ |
error = -EINVAL; /* No patterns allowed. */ |
1024 |
else |
else |
1025 |
error = ccs_update_domain(&e.head, sizeof(e), |
error = ccs_update_domain(&e.head, sizeof(e), param, |
|
is_delete, domain, |
|
1026 |
ccs_same_handler_acl, NULL); |
ccs_same_handler_acl, NULL); |
1027 |
ccs_put_name(e.handler); |
ccs_put_name(e.handler); |
1028 |
} else { |
} else { |
1029 |
struct ccs_task_acl e = { |
struct ccs_task_acl e = { |
1030 |
.head.type = is_auto ? |
.head.type = is_auto ? |
1031 |
CCS_TYPE_AUTO_TASK_ACL : CCS_TYPE_MANUAL_TASK_ACL, |
CCS_TYPE_AUTO_TASK_ACL : CCS_TYPE_MANUAL_TASK_ACL, |
1032 |
.head.cond = condition, |
.domainname = ccs_get_domainname(param), |
1033 |
}; |
}; |
|
if (!ccs_correct_domain(data)) |
|
|
return -EINVAL; |
|
|
e.domainname = ccs_get_name(data); |
|
1034 |
if (!e.domainname) |
if (!e.domainname) |
1035 |
return -ENOMEM; |
error = -EINVAL; |
1036 |
error = ccs_update_domain(&e.head, sizeof(e), is_delete, |
else |
1037 |
domain, ccs_same_task_acl, NULL); |
error = ccs_update_domain(&e.head, sizeof(e), param, |
1038 |
|
ccs_same_task_acl, NULL); |
1039 |
ccs_put_name(e.domainname); |
ccs_put_name(e.domainname); |
1040 |
} |
} |
1041 |
return error; |
return error; |
1042 |
} |
} |
1043 |
|
|
1044 |
|
/** |
1045 |
|
* ccs_write_domain2 - Write domain policy. |
1046 |
|
* |
1047 |
|
* @data: Policy to be interpreted. |
1048 |
|
* @domain: Pointer to "struct ccs_domain_info". |
1049 |
|
* @is_delete: True if it is a delete request. |
1050 |
|
* |
1051 |
|
* Returns 0 on success, negative value otherwise. |
1052 |
|
*/ |
1053 |
static int ccs_write_domain2(char *data, struct ccs_domain_info *domain, |
static int ccs_write_domain2(char *data, struct ccs_domain_info *domain, |
1054 |
const bool is_delete) |
const bool is_delete) |
1055 |
{ |
{ |
1056 |
|
struct ccs_acl_param param = { |
1057 |
|
.data = data, |
1058 |
|
.domain = domain, |
1059 |
|
.is_delete = is_delete, |
1060 |
|
}; |
1061 |
static const struct { |
static const struct { |
1062 |
const char *keyword; |
const char *keyword; |
1063 |
int (*write) (char *, struct ccs_domain_info *, |
int (*write) (struct ccs_acl_param *); |
|
struct ccs_condition *, const bool); |
|
1064 |
} ccs_callback[7] = { |
} ccs_callback[7] = { |
1065 |
{ "file ", ccs_write_file }, |
{ "file ", ccs_write_file }, |
1066 |
{ "network inet ", ccs_write_inet_network }, |
{ "network inet ", ccs_write_inet_network }, |
1070 |
{ "ipc ", ccs_write_ipc }, |
{ "ipc ", ccs_write_ipc }, |
1071 |
{ "task ", ccs_write_task }, |
{ "task ", ccs_write_task }, |
1072 |
}; |
}; |
|
int error = -EINVAL; |
|
1073 |
u8 i; |
u8 i; |
|
struct ccs_condition *cond = NULL; |
|
|
char *cp = ccs_find_condition_part(data); |
|
|
if (cp) { |
|
|
cond = ccs_get_condition(cp); |
|
|
if (!cond) |
|
|
return -EINVAL; |
|
|
} |
|
1074 |
for (i = 0; i < 7; i++) { |
for (i = 0; i < 7; i++) { |
1075 |
if (!ccs_str_starts(&data, ccs_callback[i].keyword)) |
if (!ccs_str_starts(¶m.data, ccs_callback[i].keyword)) |
1076 |
continue; |
continue; |
1077 |
error = ccs_callback[i].write(data, domain, cond, is_delete); |
return ccs_callback[i].write(¶m); |
|
break; |
|
1078 |
} |
} |
1079 |
if (cond) |
return -EINVAL; |
|
ccs_put_condition(cond); |
|
|
return error; |
|
1080 |
} |
} |
1081 |
|
|
1082 |
static const char *ccs_dif[CCS_MAX_DOMAIN_INFO_FLAGS] = { |
/* String table for domain flags. */ |
1083 |
[CCS_DIF_QUOTA_WARNED] = CCS_KEYWORD_QUOTA_EXCEEDED "\n", |
const char * const ccs_dif[CCS_MAX_DOMAIN_INFO_FLAGS] = { |
1084 |
[CCS_DIF_TRANSITION_FAILED] = CCS_KEYWORD_TRANSITION_FAILED "\n" |
[CCS_DIF_QUOTA_WARNED] = "quota_exceeded\n", |
1085 |
|
[CCS_DIF_TRANSITION_FAILED] = "transition_failed\n", |
1086 |
}; |
}; |
1087 |
|
|
1088 |
/** |
/** |
1089 |
* ccs_write_domain - Write domain policy. |
* ccs_write_domain - Write domain policy. |
1090 |
* |
* |
1099 |
bool is_delete = false; |
bool is_delete = false; |
1100 |
bool is_select = false; |
bool is_select = false; |
1101 |
unsigned int profile; |
unsigned int profile; |
1102 |
if (ccs_str_starts(&data, CCS_KEYWORD_DELETE)) |
if (ccs_str_starts(&data, "delete ")) |
1103 |
is_delete = true; |
is_delete = true; |
1104 |
else if (ccs_str_starts(&data, CCS_KEYWORD_SELECT)) |
else if (ccs_str_starts(&data, "select ")) |
1105 |
is_select = true; |
is_select = true; |
1106 |
if (is_select && ccs_select_one(head, data)) |
if (is_select && ccs_select_one(head, data)) |
1107 |
return 0; |
return 0; |
1122 |
if (!domain) |
if (!domain) |
1123 |
return -EINVAL; |
return -EINVAL; |
1124 |
|
|
1125 |
if (sscanf(data, CCS_KEYWORD_USE_PROFILE "%u", &profile) == 1 |
if (sscanf(data, "use_profile %u\n", &profile) == 1 |
1126 |
&& profile < CCS_MAX_PROFILES) { |
&& profile < CCS_MAX_PROFILES) { |
1127 |
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
1128 |
domain->profile = (u8) profile; |
if (!is_delete) |
1129 |
|
domain->profile = (u8) profile; |
1130 |
return 0; |
return 0; |
1131 |
} |
} |
1132 |
if (sscanf(data, CCS_KEYWORD_USE_GROUP "%u", &profile) == 1 |
if (sscanf(data, "use_group %u\n", &profile) == 1 |
1133 |
&& profile < CCS_MAX_ACL_GROUPS) { |
&& profile < CCS_MAX_ACL_GROUPS) { |
1134 |
domain->group = (u8) profile; |
if (!is_delete) |
1135 |
|
domain->group = (u8) profile; |
1136 |
return 0; |
return 0; |
1137 |
} |
} |
1138 |
for (profile = 0; profile < CCS_MAX_DOMAIN_INFO_FLAGS; profile++) { |
for (profile = 0; profile < CCS_MAX_DOMAIN_INFO_FLAGS; profile++) { |
1150 |
* |
* |
1151 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1152 |
* @ptr: Pointer to "struct ccs_name_union". |
* @ptr: Pointer to "struct ccs_name_union". |
1153 |
|
* |
1154 |
|
* Returns nothing. |
1155 |
*/ |
*/ |
1156 |
static void ccs_print_name_union(struct ccs_io_buffer *head, |
static void ccs_print_name_union(struct ccs_io_buffer *head, |
1157 |
const struct ccs_name_union *ptr) |
const struct ccs_name_union *ptr) |
1176 |
* |
* |
1177 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1178 |
* @ptr: Pointer to "struct ccs_number_union". |
* @ptr: Pointer to "struct ccs_number_union". |
1179 |
|
* |
1180 |
|
* Returns nothing. |
1181 |
*/ |
*/ |
1182 |
static void ccs_print_number_union(struct ccs_io_buffer *head, |
static void ccs_print_number_union(struct ccs_io_buffer *head, |
1183 |
const struct ccs_number_union *ptr) |
const struct ccs_number_union *ptr) |
1233 |
{ |
{ |
1234 |
switch (head->r.cond_step) { |
switch (head->r.cond_step) { |
1235 |
case 0: |
case 0: |
1236 |
{ |
head->r.cond_index = 0; |
1237 |
ccs_set_string(head, " if"); |
head->r.cond_step++; |
|
head->r.cond_index = 0; |
|
|
head->r.cond_step++; |
|
|
} |
|
1238 |
/* fall through */ |
/* fall through */ |
1239 |
case 1: |
case 1: |
1240 |
{ |
{ |
1343 |
head->r.cond_step++; |
head->r.cond_step++; |
1344 |
/* fall through */ |
/* fall through */ |
1345 |
case 3: |
case 3: |
1346 |
if (cond->audit) |
if (cond->grant_log != CCS_GRANTLOG_AUTO) |
1347 |
ccs_io_printf(head, " audit=%s", |
ccs_io_printf(head, " grant_log=%s", |
1348 |
ccs_yesno(cond->audit == 2)); |
ccs_yesno(cond->grant_log == |
1349 |
|
CCS_GRANTLOG_YES)); |
1350 |
if (cond->transit) { |
if (cond->transit) { |
1351 |
ccs_set_string(head, " auto_domain_transitition=\""); |
ccs_set_string(head, " auto_domain_transition=\""); |
1352 |
ccs_set_string(head, cond->transit->name); |
ccs_set_string(head, cond->transit->name); |
1353 |
ccs_set_string(head, "\""); |
ccs_set_string(head, "\""); |
1354 |
} |
} |
1374 |
return bit; |
return bit; |
1375 |
} |
} |
1376 |
|
|
1377 |
|
/** |
1378 |
|
* ccs_set_group - Print "acl_group " header keyword. |
1379 |
|
* |
1380 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1381 |
|
* |
1382 |
|
* Returns nothing. |
1383 |
|
*/ |
1384 |
static void ccs_set_group(struct ccs_io_buffer *head) |
static void ccs_set_group(struct ccs_io_buffer *head) |
1385 |
{ |
{ |
1386 |
if (head->type == CCS_EXCEPTIONPOLICY) |
if (head->type == CCS_EXCEPTIONPOLICY) |
1404 |
goto print_cond_part; |
goto print_cond_part; |
1405 |
if (acl->is_deleted) |
if (acl->is_deleted) |
1406 |
return true; |
return true; |
1407 |
next: |
next: |
1408 |
bit = head->r.bit; |
bit = head->r.bit; |
1409 |
if (!ccs_flush(head)) |
if (!ccs_flush(head)) |
1410 |
return false; |
return false; |
1457 |
goto done; |
goto done; |
1458 |
ccs_set_group(head); |
ccs_set_group(head); |
1459 |
ccs_set_string(head, "file "); |
ccs_set_string(head, "file "); |
1460 |
ccs_set_string(head, ccs_mkdev_keyword[bit]); |
ccs_set_string(head, ccs_mac_keywords[ccs_pnnn2mac[bit]]); |
1461 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1462 |
ccs_print_number_union(head, &ptr->mode); |
ccs_print_number_union(head, &ptr->mode); |
1463 |
ccs_print_number_union(head, &ptr->major); |
ccs_print_number_union(head, &ptr->major); |
1470 |
goto done; |
goto done; |
1471 |
ccs_set_group(head); |
ccs_set_group(head); |
1472 |
ccs_set_string(head, "file "); |
ccs_set_string(head, "file "); |
1473 |
ccs_set_string(head, ccs_path2_keyword[bit]); |
ccs_set_string(head, ccs_mac_keywords[ccs_pp2mac[bit]]); |
1474 |
ccs_print_name_union(head, &ptr->name1); |
ccs_print_name_union(head, &ptr->name1); |
1475 |
ccs_print_name_union(head, &ptr->name2); |
ccs_print_name_union(head, &ptr->name2); |
1476 |
} else if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
} else if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
1481 |
goto done; |
goto done; |
1482 |
ccs_set_group(head); |
ccs_set_group(head); |
1483 |
ccs_set_string(head, "file "); |
ccs_set_string(head, "file "); |
1484 |
ccs_set_string(head, ccs_path_number_keyword[bit]); |
ccs_set_string(head, ccs_mac_keywords[ccs_pn2mac[bit]]); |
1485 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1486 |
ccs_print_number_union(head, &ptr->number); |
ccs_print_number_union(head, &ptr->number); |
1487 |
} else if (acl_type == CCS_TYPE_ENV_ACL) { |
} else if (acl_type == CCS_TYPE_ENV_ACL) { |
1495 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1496 |
ccs_set_group(head); |
ccs_set_group(head); |
1497 |
ccs_set_string(head, "capability "); |
ccs_set_string(head, "capability "); |
1498 |
ccs_set_string(head, ccs_cap2keyword(ptr->operation)); |
ccs_set_string(head, |
1499 |
|
ccs_mac_keywords[ccs_c2mac[ptr->operation]]); |
1500 |
} else if (acl_type == CCS_TYPE_INET_ACL) { |
} else if (acl_type == CCS_TYPE_INET_ACL) { |
1501 |
struct ccs_inet_acl *ptr = |
struct ccs_inet_acl *ptr = |
1502 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1563 |
head->r.cond_step = 0; |
head->r.cond_step = 0; |
1564 |
if (!ccs_flush(head)) |
if (!ccs_flush(head)) |
1565 |
return false; |
return false; |
1566 |
print_cond_part: |
print_cond_part: |
1567 |
if (!ccs_print_condition(head, acl->cond)) |
if (!ccs_print_condition(head, acl->cond)) |
1568 |
return false; |
return false; |
1569 |
head->r.print_cond_part = false; |
head->r.print_cond_part = false; |
1579 |
case CCS_TYPE_UNIX_ACL: |
case CCS_TYPE_UNIX_ACL: |
1580 |
goto next; |
goto next; |
1581 |
} |
} |
1582 |
done: |
done: |
1583 |
head->r.bit = 0; |
head->r.bit = 0; |
1584 |
return true; |
return true; |
1585 |
} |
} |
1591 |
* @domain: Pointer to "struct ccs_domain_info". |
* @domain: Pointer to "struct ccs_domain_info". |
1592 |
* @index: Index number. |
* @index: Index number. |
1593 |
* |
* |
|
* Caller holds ccs_read_lock(). |
|
|
* |
|
1594 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1595 |
|
* |
1596 |
|
* Caller holds ccs_read_lock(). |
1597 |
*/ |
*/ |
1598 |
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
1599 |
struct ccs_domain_info *domain, |
struct ccs_domain_info *domain, |
1614 |
* |
* |
1615 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1616 |
* |
* |
1617 |
|
* Returns nothing. |
1618 |
|
* |
1619 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1620 |
*/ |
*/ |
1621 |
static void ccs_read_domain(struct ccs_io_buffer *head) |
static void ccs_read_domain(struct ccs_io_buffer *head) |
1634 |
/* Print domainname and flags. */ |
/* Print domainname and flags. */ |
1635 |
ccs_set_string(head, domain->domainname->name); |
ccs_set_string(head, domain->domainname->name); |
1636 |
ccs_set_lf(head); |
ccs_set_lf(head); |
1637 |
ccs_io_printf(head, CCS_KEYWORD_USE_PROFILE "%u\n", |
ccs_io_printf(head, "use_profile %u\n", |
1638 |
domain->profile); |
domain->profile); |
1639 |
ccs_io_printf(head, CCS_KEYWORD_USE_GROUP "%u\n", |
ccs_io_printf(head, "use_group %u\n", domain->group); |
|
domain->group); |
|
1640 |
for (i = 0; i < CCS_MAX_DOMAIN_INFO_FLAGS; i++) |
for (i = 0; i < CCS_MAX_DOMAIN_INFO_FLAGS; i++) |
1641 |
if (domain->flags[i]) |
if (domain->flags[i]) |
1642 |
ccs_set_string(head, ccs_dif[i]); |
ccs_set_string(head, ccs_dif[i]); |
1661 |
goto done; |
goto done; |
1662 |
} |
} |
1663 |
} |
} |
1664 |
done: |
done: |
1665 |
head->r.eof = true; |
head->r.eof = true; |
1666 |
} |
} |
1667 |
|
|
1702 |
* |
* |
1703 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1704 |
* |
* |
1705 |
|
* Returns nothing. |
1706 |
|
* |
1707 |
* This is equivalent to doing |
* This is equivalent to doing |
1708 |
* |
* |
1709 |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
1732 |
} |
} |
1733 |
|
|
1734 |
/** |
/** |
1735 |
* ccs_write_pid: Specify PID to obtain domainname. |
* ccs_write_pid - Specify PID to obtain domainname. |
1736 |
* |
* |
1737 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1738 |
* |
* |
1788 |
#endif |
#endif |
1789 |
if (p) { |
if (p) { |
1790 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
1791 |
ccs_flags = p->ccs_flags; |
ccs_flags = ccs_task_flags(p); |
1792 |
} |
} |
1793 |
ccs_tasklist_unlock(); |
ccs_tasklist_unlock(); |
1794 |
if (!domain) |
if (!domain) |
1805 |
} |
} |
1806 |
} |
} |
1807 |
|
|
1808 |
static const char *ccs_transition_type[CCS_MAX_TRANSITION_TYPE] = { |
/* String table for domain transition control keywords. */ |
1809 |
[CCS_TRANSITION_CONTROL_NO_INITIALIZE] |
static const char * const ccs_transition_type[CCS_MAX_TRANSITION_TYPE] = { |
1810 |
= CCS_KEYWORD_NO_INITIALIZE_DOMAIN, |
[CCS_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ", |
1811 |
[CCS_TRANSITION_CONTROL_INITIALIZE] = CCS_KEYWORD_INITIALIZE_DOMAIN, |
[CCS_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ", |
1812 |
[CCS_TRANSITION_CONTROL_NO_KEEP] = CCS_KEYWORD_NO_KEEP_DOMAIN, |
[CCS_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ", |
1813 |
[CCS_TRANSITION_CONTROL_KEEP] = CCS_KEYWORD_KEEP_DOMAIN |
[CCS_TRANSITION_CONTROL_KEEP] = "keep_domain ", |
1814 |
}; |
}; |
1815 |
|
|
1816 |
static const char *ccs_group_name[CCS_MAX_GROUP] = { |
/* String table for grouping keywords. */ |
1817 |
[CCS_PATH_GROUP] = CCS_KEYWORD_PATH_GROUP, |
static const char * const ccs_group_name[CCS_MAX_GROUP] = { |
1818 |
[CCS_NUMBER_GROUP] = CCS_KEYWORD_NUMBER_GROUP, |
[CCS_PATH_GROUP] = "path_group ", |
1819 |
[CCS_ADDRESS_GROUP] = CCS_KEYWORD_ADDRESS_GROUP |
[CCS_NUMBER_GROUP] = "number_group ", |
1820 |
|
[CCS_ADDRESS_GROUP] = "address_group ", |
1821 |
}; |
}; |
1822 |
|
|
1823 |
/** |
/** |
1830 |
static int ccs_write_exception(struct ccs_io_buffer *head) |
static int ccs_write_exception(struct ccs_io_buffer *head) |
1831 |
{ |
{ |
1832 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1833 |
const bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
const bool is_delete = ccs_str_starts(&data, "delete "); |
1834 |
u8 i; |
u8 i; |
1835 |
static const struct { |
static const struct { |
1836 |
const char *keyword; |
const char *keyword; |
1837 |
int (*write) (char *, const bool); |
int (*write) (char *, const bool); |
1838 |
} ccs_callback[3] = { |
} ccs_callback[2] = { |
1839 |
{ CCS_KEYWORD_AGGREGATOR, ccs_write_aggregator }, |
{ "aggregator ", ccs_write_aggregator }, |
1840 |
{ CCS_KEYWORD_FILE_PATTERN, ccs_write_pattern }, |
{ "deny_autobind ", ccs_write_reserved_port }, |
|
{ CCS_KEYWORD_DENY_AUTOBIND, ccs_write_reserved_port } |
|
1841 |
}; |
}; |
1842 |
for (i = 0; i < 3; i++) |
for (i = 0; i < 2; i++) |
1843 |
if (ccs_str_starts(&data, ccs_callback[i].keyword)) |
if (ccs_str_starts(&data, ccs_callback[i].keyword)) |
1844 |
return ccs_callback[i].write(data, is_delete); |
return ccs_callback[i].write(data, is_delete); |
1845 |
for (i = 0; i < CCS_MAX_TRANSITION_TYPE; i++) |
for (i = 0; i < CCS_MAX_TRANSITION_TYPE; i++) |
1894 |
head)->member_name->name); |
head)->member_name->name); |
1895 |
} else if (idx == CCS_NUMBER_GROUP) { |
} else if (idx == CCS_NUMBER_GROUP) { |
1896 |
ccs_print_number_union(head, &container_of |
ccs_print_number_union(head, &container_of |
1897 |
(ptr, struct ccs_number_group, |
(ptr, struct ccs_number_group, |
1898 |
head)->number); |
head)->number); |
1899 |
} else if (idx == CCS_ADDRESS_GROUP) { |
} else if (idx == CCS_ADDRESS_GROUP) { |
1900 |
char buffer[128]; |
char buffer[128]; |
1901 |
struct ccs_address_group *member = |
struct ccs_address_group *member = |
1956 |
{ |
{ |
1957 |
struct ccs_aggregator *ptr = |
struct ccs_aggregator *ptr = |
1958 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1959 |
ccs_set_string(head, CCS_KEYWORD_AGGREGATOR); |
ccs_set_string(head, "aggregator "); |
1960 |
ccs_set_string(head, ptr->original_name->name); |
ccs_set_string(head, ptr->original_name->name); |
1961 |
ccs_set_space(head); |
ccs_set_space(head); |
1962 |
ccs_set_string(head, |
ccs_set_string(head, |
1963 |
ptr->aggregated_name->name); |
ptr->aggregated_name->name); |
1964 |
} |
} |
1965 |
break; |
break; |
|
case CCS_ID_PATTERN: |
|
|
{ |
|
|
struct ccs_pattern *ptr = |
|
|
container_of(acl, typeof(*ptr), head); |
|
|
ccs_set_string(head, CCS_KEYWORD_FILE_PATTERN); |
|
|
ccs_set_string(head, ptr->pattern->name); |
|
|
} |
|
|
break; |
|
1966 |
case CCS_ID_RESERVEDPORT: |
case CCS_ID_RESERVEDPORT: |
1967 |
{ |
{ |
1968 |
struct ccs_reserved *ptr = |
struct ccs_reserved *ptr = |
1969 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1970 |
const u16 min_port = ptr->min_port; |
const u16 min_port = ptr->min_port; |
1971 |
const u16 max_port = ptr->max_port; |
const u16 max_port = ptr->max_port; |
1972 |
ccs_set_string(head, |
ccs_set_string(head, "deny_autobind "); |
|
CCS_KEYWORD_DENY_AUTOBIND); |
|
1973 |
ccs_io_printf(head, "%u", min_port); |
ccs_io_printf(head, "%u", min_port); |
1974 |
if (min_port != max_port) |
if (min_port != max_port) |
1975 |
ccs_io_printf(head, "-%u", max_port); |
ccs_io_printf(head, "-%u", max_port); |
1989 |
* |
* |
1990 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1991 |
* |
* |
1992 |
|
* Returns nothing. |
1993 |
|
* |
1994 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1995 |
*/ |
*/ |
1996 |
static void ccs_read_exception(struct ccs_io_buffer *head) |
static void ccs_read_exception(struct ccs_io_buffer *head) |
2020 |
head->r.eof = true; |
head->r.eof = true; |
2021 |
} |
} |
2022 |
|
|
2023 |
/* Wait queue for ccs_query_list. */ |
/* Wait queue for kernel -> userspace notification. */ |
2024 |
static DECLARE_WAIT_QUEUE_HEAD(ccs_query_wait); |
static DECLARE_WAIT_QUEUE_HEAD(ccs_query_wait); |
2025 |
|
/* Wait queue for userspace -> kernel notification. */ |
2026 |
/* Lock for manipulating ccs_query_list. */ |
static DECLARE_WAIT_QUEUE_HEAD(ccs_answer_wait); |
|
static DEFINE_SPINLOCK(ccs_query_list_lock); |
|
2027 |
|
|
2028 |
/* Structure for query. */ |
/* Structure for query. */ |
2029 |
struct ccs_query { |
struct ccs_query { |
2033 |
unsigned int serial; |
unsigned int serial; |
2034 |
int timer; |
int timer; |
2035 |
int answer; |
int answer; |
2036 |
|
u8 retry; |
2037 |
}; |
}; |
2038 |
|
|
2039 |
/* The list for "struct ccs_query". */ |
/* The list for "struct ccs_query". */ |
2040 |
static LIST_HEAD(ccs_query_list); |
static LIST_HEAD(ccs_query_list); |
2041 |
|
|
2042 |
|
/* Lock for manipulating ccs_query_list. */ |
2043 |
|
static DEFINE_SPINLOCK(ccs_query_list_lock); |
2044 |
|
|
2045 |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
2046 |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
2047 |
|
|
2048 |
static void ccs_truncate(char *str) |
/** |
2049 |
|
* ccs_truncate - Truncate a line. |
2050 |
|
* |
2051 |
|
* @str: String to truncate. |
2052 |
|
* |
2053 |
|
* Returns length of truncated @str. |
2054 |
|
*/ |
2055 |
|
static int ccs_truncate(char *str) |
2056 |
{ |
{ |
2057 |
while (* (unsigned char *) str > (unsigned char) ' ') |
char *start = str; |
2058 |
|
while (*(unsigned char *) str > (unsigned char) ' ') |
2059 |
str++; |
str++; |
2060 |
*str = '\0'; |
*str = '\0'; |
2061 |
|
return strlen(start) + 1; |
2062 |
|
} |
2063 |
|
|
2064 |
|
/** |
2065 |
|
* ccs_add_entry - Add an ACL to current thread's domain. Used by learning mode. |
2066 |
|
* |
2067 |
|
* @header: Lines containing ACL. |
2068 |
|
* |
2069 |
|
* Returns nothing. |
2070 |
|
*/ |
2071 |
|
static void ccs_add_entry(char *header) |
2072 |
|
{ |
2073 |
|
char *buffer; |
2074 |
|
char *realpath = NULL; |
2075 |
|
char *argv0 = NULL; |
2076 |
|
char *symlink = NULL; |
2077 |
|
char *handler; |
2078 |
|
char *cp = strchr(header, '\n'); |
2079 |
|
int len; |
2080 |
|
if (!cp) |
2081 |
|
return; |
2082 |
|
cp = strchr(cp + 1, '\n'); |
2083 |
|
if (!cp) |
2084 |
|
return; |
2085 |
|
*cp++ = '\0'; |
2086 |
|
len = strlen(cp) + 1; |
2087 |
|
/* strstr() will return NULL if ordering is wrong. */ |
2088 |
|
if (*cp == 'f') { |
2089 |
|
argv0 = strstr(header, " argv[]={ \""); |
2090 |
|
if (argv0) { |
2091 |
|
argv0 += 10; |
2092 |
|
len += ccs_truncate(argv0) + 14; |
2093 |
|
} |
2094 |
|
realpath = strstr(header, " exec={ realpath=\""); |
2095 |
|
if (realpath) { |
2096 |
|
realpath += 8; |
2097 |
|
len += ccs_truncate(realpath) + 6; |
2098 |
|
} |
2099 |
|
symlink = strstr(header, " symlink.target=\""); |
2100 |
|
if (symlink) |
2101 |
|
len += ccs_truncate(symlink + 1) + 1; |
2102 |
|
} |
2103 |
|
handler = strstr(header, "type=execute_handler"); |
2104 |
|
if (handler) |
2105 |
|
len += ccs_truncate(handler) + 6; |
2106 |
|
buffer = kmalloc(len, CCS_GFP_FLAGS); |
2107 |
|
if (!buffer) |
2108 |
|
return; |
2109 |
|
snprintf(buffer, len - 1, "%s", cp); |
2110 |
|
if (handler) |
2111 |
|
ccs_addprintf(buffer, len, " task.%s", handler); |
2112 |
|
if (realpath) |
2113 |
|
ccs_addprintf(buffer, len, " exec.%s", realpath); |
2114 |
|
if (argv0) |
2115 |
|
ccs_addprintf(buffer, len, " exec.argv[0]=%s", argv0); |
2116 |
|
if (symlink) |
2117 |
|
ccs_addprintf(buffer, len, "%s", symlink); |
2118 |
|
ccs_normalize_line(buffer); |
2119 |
|
if (!ccs_write_domain2(buffer, ccs_current_domain(), false)) |
2120 |
|
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
2121 |
|
kfree(buffer); |
2122 |
} |
} |
2123 |
|
|
2124 |
/** |
/** |
2135 |
int ccs_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
int ccs_supervisor(struct ccs_request_info *r, const char *fmt, ...) |
2136 |
{ |
{ |
2137 |
va_list args; |
va_list args; |
2138 |
int error = -EPERM; |
int error; |
|
int pos; |
|
2139 |
int len; |
int len; |
2140 |
static unsigned int ccs_serial; |
static unsigned int ccs_serial; |
2141 |
struct ccs_query *entry = NULL; |
struct ccs_query entry = { }; |
2142 |
bool quota_exceeded = false; |
bool quota_exceeded = false; |
|
char *header; |
|
|
struct ccs_domain_info * const domain = ccs_current_domain(); |
|
2143 |
va_start(args, fmt); |
va_start(args, fmt); |
2144 |
len = vsnprintf((char *) &pos, sizeof(pos) - 1, fmt, args) + 80; |
len = vsnprintf((char *) &len, 1, fmt, args) + 1; |
2145 |
va_end(args); |
va_end(args); |
2146 |
if (r->mode == CCS_CONFIG_LEARNING) { |
/* Write /proc/ccs/audit. */ |
2147 |
char *buffer; |
va_start(args, fmt); |
2148 |
char *realpath = NULL; |
ccs_write_log2(r, len, fmt, args); |
2149 |
char *argv0 = NULL; |
va_end(args); |
2150 |
char *symlink = NULL; |
/* Nothing more to do if granted. */ |
2151 |
char *handler = NULL; |
if (r->granted) |
|
const struct ccs_preference *pref; |
|
|
if (!ccs_domain_quota_ok(r)) |
|
|
return 0; |
|
|
header = ccs_init_log(&len, r); |
|
|
if (!header) |
|
|
return 0; |
|
|
pref = &ccs_profile(r->profile)->preference; |
|
|
/* strstr() will return NULL if ordering is wrong. */ |
|
|
if (r->param_type == CCS_TYPE_PATH_ACL && |
|
|
r->param.path.operation == CCS_TYPE_EXECUTE) { |
|
|
if (pref->learning_exec_argv0) { |
|
|
argv0 = strstr(header, " argv[]={ \""); |
|
|
if (argv0) { |
|
|
argv0 += 10; |
|
|
ccs_truncate(argv0); |
|
|
} |
|
|
} |
|
|
if (pref->learning_exec_realpath) { |
|
|
realpath = strstr(header, |
|
|
" exec={ realpath=\""); |
|
|
if (realpath) { |
|
|
realpath += 8; |
|
|
ccs_truncate(realpath); |
|
|
} |
|
|
} |
|
|
} else if (r->param_type == CCS_TYPE_PATH_ACL && |
|
|
r->param.path.operation == CCS_TYPE_SYMLINK && |
|
|
pref->learning_symlink_target) { |
|
|
symlink = strstr(header, " symlink.target=\""); |
|
|
if (symlink) |
|
|
ccs_truncate(symlink + 1); |
|
|
} |
|
|
handler = strstr(header, "type=execute_handler"); |
|
|
if (handler) |
|
|
ccs_truncate(handler); |
|
|
buffer = kmalloc(len, CCS_GFP_FLAGS); |
|
|
if (buffer) { |
|
|
va_start(args, fmt); |
|
|
vsnprintf(buffer, len - 1, fmt, args); |
|
|
va_end(args); |
|
|
if (handler || realpath || argv0 || symlink) { |
|
|
ccs_addprintf(buffer, len, " if"); |
|
|
if (handler) |
|
|
ccs_addprintf(buffer, len, " task.%s", |
|
|
handler); |
|
|
if (realpath) |
|
|
ccs_addprintf(buffer, len, " exec.%s", |
|
|
realpath); |
|
|
if (argv0) |
|
|
ccs_addprintf(buffer, len, |
|
|
" exec.argv[0]=%s", |
|
|
argv0); |
|
|
if (symlink) |
|
|
ccs_addprintf(buffer, len, "%s", |
|
|
symlink); |
|
|
} |
|
|
ccs_normalize_line(buffer); |
|
|
ccs_write_domain2(buffer, domain, false); |
|
|
kfree(buffer); |
|
|
} |
|
|
kfree(header); |
|
|
return 0; |
|
|
} |
|
|
if (r->mode != CCS_CONFIG_ENFORCING) |
|
2152 |
return 0; |
return 0; |
2153 |
if (!atomic_read(&ccs_query_observers)) { |
if (r->mode) |
2154 |
|
ccs_update_stat(r->mode); |
2155 |
|
switch (r->mode) { |
2156 |
int i; |
int i; |
2157 |
if (current->ccs_flags & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
struct ccs_profile *p; |
2158 |
return -EPERM; |
case CCS_CONFIG_ENFORCING: |
2159 |
for (i = 0; i < ccs_profile(domain->profile)->preference. |
error = -EPERM; |
2160 |
enforcing_penalty; i++) { |
if (atomic_read(&ccs_query_observers)) |
2161 |
|
break; |
2162 |
|
if (r->dont_sleep_on_enforce_error) |
2163 |
|
goto out; |
2164 |
|
p = ccs_profile(r->profile); |
2165 |
|
/* Check enforcing_penalty parameter. */ |
2166 |
|
for (i = 0; i < p->pref[CCS_PREF_ENFORCING_PENALTY]; i++) { |
2167 |
set_current_state(TASK_INTERRUPTIBLE); |
set_current_state(TASK_INTERRUPTIBLE); |
2168 |
schedule_timeout(HZ / 10); |
schedule_timeout(HZ / 10); |
2169 |
} |
} |
|
return -EPERM; |
|
|
} |
|
|
header = ccs_init_log(&len, r); |
|
|
if (!header) |
|
2170 |
goto out; |
goto out; |
2171 |
entry = kzalloc(sizeof(*entry), CCS_GFP_FLAGS); |
case CCS_CONFIG_LEARNING: |
2172 |
if (!entry) |
error = 0; |
2173 |
|
/* Check mac_learning_entry parameter. */ |
2174 |
|
if (ccs_domain_quota_ok(r)) |
2175 |
|
break; |
2176 |
|
/* fall through */ |
2177 |
|
default: |
2178 |
|
return 0; |
2179 |
|
} |
2180 |
|
/* Get message. */ |
2181 |
|
va_start(args, fmt); |
2182 |
|
entry.query = ccs_init_log(r, len, fmt, args); |
2183 |
|
va_end(args); |
2184 |
|
if (!entry.query) |
2185 |
goto out; |
goto out; |
2186 |
len = ccs_round2(len); |
entry.query_len = strlen(entry.query) + 1; |
2187 |
entry->query = kzalloc(len, CCS_GFP_FLAGS); |
if (!error) { |
2188 |
if (!entry->query) |
ccs_add_entry(entry.query); |
2189 |
goto out; |
goto out; |
2190 |
|
} |
2191 |
|
len = ccs_round2(entry.query_len); |
2192 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2193 |
if (ccs_quota_for_query && ccs_query_memory_size + len + |
if (ccs_memory_quota[CCS_MEMORY_QUERY] && |
2194 |
sizeof(*entry) >= ccs_quota_for_query) { |
ccs_memory_used[CCS_MEMORY_QUERY] + len |
2195 |
|
>= ccs_memory_quota[CCS_MEMORY_QUERY]) { |
2196 |
quota_exceeded = true; |
quota_exceeded = true; |
2197 |
} else { |
} else { |
2198 |
ccs_query_memory_size += len + sizeof(*entry); |
entry.serial = ccs_serial++; |
2199 |
entry->serial = ccs_serial++; |
entry.retry = r->retry; |
2200 |
|
ccs_memory_used[CCS_MEMORY_QUERY] += len; |
2201 |
|
list_add_tail(&entry.list, &ccs_query_list); |
2202 |
} |
} |
2203 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
2204 |
if (quota_exceeded) |
if (quota_exceeded) |
2205 |
goto out; |
goto out; |
|
pos = snprintf(entry->query, len - 1, "Q%u-%hu\n%s", |
|
|
entry->serial, r->retry, header); |
|
|
kfree(header); |
|
|
header = NULL; |
|
|
va_start(args, fmt); |
|
|
vsnprintf(entry->query + pos, len - 1 - pos, fmt, args); |
|
|
entry->query_len = strlen(entry->query) + 1; |
|
|
va_end(args); |
|
|
spin_lock(&ccs_query_list_lock); |
|
|
list_add_tail(&entry->list, &ccs_query_list); |
|
|
spin_unlock(&ccs_query_list_lock); |
|
2206 |
/* Give 10 seconds for supervisor's opinion. */ |
/* Give 10 seconds for supervisor's opinion. */ |
2207 |
for (entry->timer = 0; |
while (entry.timer < 10) { |
2208 |
atomic_read(&ccs_query_observers) && entry->timer < 100; |
wake_up_all(&ccs_query_wait); |
2209 |
entry->timer++) { |
if (wait_event_interruptible_timeout |
2210 |
wake_up(&ccs_query_wait); |
(ccs_answer_wait, entry.answer || |
2211 |
set_current_state(TASK_INTERRUPTIBLE); |
!atomic_read(&ccs_query_observers), HZ)) |
|
schedule_timeout(HZ / 10); |
|
|
if (entry->answer) |
|
2212 |
break; |
break; |
2213 |
|
else |
2214 |
|
entry.timer++; |
2215 |
} |
} |
2216 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2217 |
list_del(&entry->list); |
list_del(&entry.list); |
2218 |
ccs_query_memory_size -= len + sizeof(*entry); |
ccs_memory_used[CCS_MEMORY_QUERY] -= len; |
2219 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
2220 |
switch (entry->answer) { |
switch (entry.answer) { |
2221 |
case 3: /* Asked to retry by administrator. */ |
case 3: /* Asked to retry by administrator. */ |
2222 |
error = CCS_RETRY_REQUEST; |
error = CCS_RETRY_REQUEST; |
2223 |
r->retry++; |
r->retry++; |
2226 |
/* Granted by administrator. */ |
/* Granted by administrator. */ |
2227 |
error = 0; |
error = 0; |
2228 |
break; |
break; |
|
case 0: |
|
|
/* Timed out. */ |
|
|
break; |
|
2229 |
default: |
default: |
2230 |
/* Rejected by administrator. */ |
/* Timed out or rejected by administrator. */ |
2231 |
break; |
break; |
2232 |
} |
} |
2233 |
out: |
out: |
2234 |
if (entry) |
kfree(entry.query); |
|
kfree(entry->query); |
|
|
kfree(entry); |
|
|
kfree(header); |
|
2235 |
return error; |
return error; |
2236 |
} |
} |
2237 |
|
|
2274 |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
2275 |
* |
* |
2276 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
2277 |
|
* |
2278 |
|
* Returns nothing. |
2279 |
*/ |
*/ |
2280 |
static void ccs_read_query(struct ccs_io_buffer *head) |
static void ccs_read_query(struct ccs_io_buffer *head) |
2281 |
{ |
{ |
2285 |
char *buf; |
char *buf; |
2286 |
if (head->r.w_pos) |
if (head->r.w_pos) |
2287 |
return; |
return; |
2288 |
if (head->read_buf) { |
kfree(head->read_buf); |
2289 |
kfree(head->read_buf); |
head->read_buf = NULL; |
|
head->read_buf = NULL; |
|
|
} |
|
2290 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2291 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2292 |
struct ccs_query *ptr = list_entry(tmp, typeof(*ptr), list); |
struct ccs_query *ptr = list_entry(tmp, typeof(*ptr), list); |
2302 |
head->r.query_index = 0; |
head->r.query_index = 0; |
2303 |
return; |
return; |
2304 |
} |
} |
2305 |
buf = kzalloc(len, CCS_GFP_FLAGS); |
buf = kzalloc(len + 32, CCS_GFP_FLAGS); |
2306 |
if (!buf) |
if (!buf) |
2307 |
return; |
return; |
2308 |
pos = 0; |
pos = 0; |
2318 |
* can change, but I don't care. |
* can change, but I don't care. |
2319 |
*/ |
*/ |
2320 |
if (len == ptr->query_len) |
if (len == ptr->query_len) |
2321 |
memmove(buf, ptr->query, len); |
snprintf(buf, len + 32, "Q%u-%hu\n%s", ptr->serial, |
2322 |
|
ptr->retry, ptr->query); |
2323 |
break; |
break; |
2324 |
} |
} |
2325 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
2363 |
break; |
break; |
2364 |
} |
} |
2365 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
2366 |
|
wake_up_all(&ccs_answer_wait); |
2367 |
return 0; |
return 0; |
2368 |
} |
} |
2369 |
|
|
2370 |
/** |
/** |
2371 |
* ccs_read_version: Get version. |
* ccs_read_version - Get version. |
2372 |
* |
* |
2373 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
2374 |
|
* |
2375 |
|
* Returns nothing. |
2376 |
*/ |
*/ |
2377 |
static void ccs_read_version(struct ccs_io_buffer *head) |
static void ccs_read_version(struct ccs_io_buffer *head) |
2378 |
{ |
{ |
2379 |
if (head->r.eof) |
if (head->r.eof) |
2380 |
return; |
return; |
2381 |
ccs_set_string(head, "1.8.0-pre"); |
ccs_set_string(head, "1.8.0"); |
2382 |
|
head->r.eof = true; |
2383 |
|
} |
2384 |
|
|
2385 |
|
/* String table for /proc/ccs/meminfo interface. */ |
2386 |
|
static const char * const ccs_policy_headers[CCS_MAX_POLICY_STAT] = { |
2387 |
|
[CCS_STAT_POLICY_UPDATES] = "update:", |
2388 |
|
[CCS_STAT_POLICY_LEARNING] = "violation in learning mode:", |
2389 |
|
[CCS_STAT_POLICY_PERMISSIVE] = "violation in permissive mode:", |
2390 |
|
[CCS_STAT_POLICY_ENFORCING] = "violation in enforcing mode:", |
2391 |
|
}; |
2392 |
|
|
2393 |
|
/* String table for /proc/ccs/meminfo interface. */ |
2394 |
|
static const char * const ccs_memory_headers[CCS_MAX_MEMORY_STAT] = { |
2395 |
|
[CCS_MEMORY_POLICY] = "policy:", |
2396 |
|
[CCS_MEMORY_AUDIT] = "audit log:", |
2397 |
|
[CCS_MEMORY_QUERY] = "query message:", |
2398 |
|
}; |
2399 |
|
|
2400 |
|
/* Timestamp counter for last updated. */ |
2401 |
|
static unsigned int ccs_stat_updated[CCS_MAX_POLICY_STAT]; |
2402 |
|
/* Counter for number of updates. */ |
2403 |
|
static unsigned int ccs_stat_modified[CCS_MAX_POLICY_STAT]; |
2404 |
|
|
2405 |
|
/** |
2406 |
|
* ccs_update_stat - Update statistic counters. |
2407 |
|
* |
2408 |
|
* @index: Index for policy type. |
2409 |
|
* |
2410 |
|
* Returns nothing. |
2411 |
|
*/ |
2412 |
|
void ccs_update_stat(const u8 index) |
2413 |
|
{ |
2414 |
|
struct timeval tv; |
2415 |
|
do_gettimeofday(&tv); |
2416 |
|
/* |
2417 |
|
* I don't use atomic operations because race condition is not fatal. |
2418 |
|
*/ |
2419 |
|
ccs_stat_updated[index]++; |
2420 |
|
ccs_stat_modified[index] = tv.tv_sec; |
2421 |
|
} |
2422 |
|
|
2423 |
|
/** |
2424 |
|
* ccs_read_stat - Read statistic data. |
2425 |
|
* |
2426 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2427 |
|
* |
2428 |
|
* Returns nothing. |
2429 |
|
*/ |
2430 |
|
static void ccs_read_stat(struct ccs_io_buffer *head) |
2431 |
|
{ |
2432 |
|
u8 i; |
2433 |
|
unsigned int total = 0; |
2434 |
|
if (head->r.eof) |
2435 |
|
return; |
2436 |
|
for (i = 0; i < CCS_MAX_POLICY_STAT; i++) { |
2437 |
|
ccs_io_printf(head, "Policy %-30s %10u", ccs_policy_headers[i], |
2438 |
|
ccs_stat_updated[i]); |
2439 |
|
if (ccs_stat_modified[i]) { |
2440 |
|
struct ccs_time stamp; |
2441 |
|
ccs_convert_time(ccs_stat_modified[i], &stamp); |
2442 |
|
ccs_io_printf(head, " (Last: %04u/%02u/%02u " |
2443 |
|
"%02u:%02u:%02u)", |
2444 |
|
stamp.year, stamp.month, stamp.day, |
2445 |
|
stamp.hour, stamp.min, stamp.sec); |
2446 |
|
} |
2447 |
|
ccs_set_lf(head); |
2448 |
|
} |
2449 |
|
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) { |
2450 |
|
unsigned int used = ccs_memory_used[i]; |
2451 |
|
total += used; |
2452 |
|
ccs_io_printf(head, "Memory used by %-22s %10u", |
2453 |
|
ccs_memory_headers[i], used); |
2454 |
|
used = ccs_memory_quota[i]; |
2455 |
|
if (used) |
2456 |
|
ccs_io_printf(head, " (Quota: %10u)", used); |
2457 |
|
ccs_set_lf(head); |
2458 |
|
} |
2459 |
|
ccs_io_printf(head, "Total memory used: %10u\n", |
2460 |
|
total); |
2461 |
head->r.eof = true; |
head->r.eof = true; |
2462 |
} |
} |
2463 |
|
|
2464 |
/** |
/** |
2465 |
* ccs_read_self_domain - Get the current process's domainname. |
* ccs_write_stat - Set memory quota. |
2466 |
* |
* |
2467 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
2468 |
|
* |
2469 |
|
* Returns 0. |
2470 |
*/ |
*/ |
2471 |
static void ccs_read_self_domain(struct ccs_io_buffer *head) |
static int ccs_write_stat(struct ccs_io_buffer *head) |
2472 |
{ |
{ |
2473 |
|
char *data = head->write_buf; |
2474 |
|
u8 i; |
2475 |
|
if (ccs_str_starts(&data, "Memory used by ")) |
2476 |
|
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) |
2477 |
|
if (ccs_str_starts(&data, ccs_memory_headers[i])) |
2478 |
|
sscanf(data, "%u", &ccs_memory_quota[i]); |
2479 |
|
return 0; |
2480 |
|
} |
2481 |
|
|
2482 |
|
/* String table for /proc/ccs/meminfo interface. */ |
2483 |
|
static const char * const ccs_old_memory_header[CCS_MAX_MEMORY_STAT] = { |
2484 |
|
[CCS_MEMORY_POLICY] = "Policy:", |
2485 |
|
[CCS_MEMORY_AUDIT] = "Audit logs:", |
2486 |
|
[CCS_MEMORY_QUERY] = "Query lists:", |
2487 |
|
}; |
2488 |
|
|
2489 |
|
/** |
2490 |
|
* ccs_read_memory_counter - Read memory usage. |
2491 |
|
* |
2492 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2493 |
|
* |
2494 |
|
* Returns nothing. |
2495 |
|
*/ |
2496 |
|
static void ccs_read_memory_counter(struct ccs_io_buffer *head) |
2497 |
|
{ |
2498 |
|
unsigned int total = 0; |
2499 |
|
int i; |
2500 |
if (head->r.eof) |
if (head->r.eof) |
2501 |
return; |
return; |
2502 |
/* |
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) { |
2503 |
* ccs_current_domain()->domainname != NULL because every process |
unsigned int used = ccs_memory_used[i]; |
2504 |
* belongs to a domain and the domain's name cannot be NULL. |
total += used; |
2505 |
*/ |
ccs_io_printf(head, "%-12s %10u", ccs_old_memory_header[i], |
2506 |
ccs_io_printf(head, "%s", ccs_current_domain()->domainname->name); |
used); |
2507 |
|
if (ccs_memory_quota[i]) |
2508 |
|
ccs_io_printf(head, " (Quota: %10u)", |
2509 |
|
ccs_memory_quota[i]); |
2510 |
|
ccs_io_printf(head, "\n"); |
2511 |
|
} |
2512 |
|
ccs_io_printf(head, "%-12s %10u\n", "Total:", total); |
2513 |
head->r.eof = true; |
head->r.eof = true; |
2514 |
} |
} |
2515 |
|
|
2516 |
/** |
/** |
2517 |
|
* ccs_write_memory_quota - Set memory quota. |
2518 |
|
* |
2519 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2520 |
|
* |
2521 |
|
* Returns 0. |
2522 |
|
*/ |
2523 |
|
static int ccs_write_memory_quota(struct ccs_io_buffer *head) |
2524 |
|
{ |
2525 |
|
char *data = head->write_buf; |
2526 |
|
u8 i; |
2527 |
|
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) |
2528 |
|
if (ccs_str_starts(&data, ccs_old_memory_header[i])) |
2529 |
|
sscanf(data, "%u", &ccs_memory_quota[i]); |
2530 |
|
return 0; |
2531 |
|
} |
2532 |
|
|
2533 |
|
/** |
2534 |
* ccs_open_control - open() for /proc/ccs/ interface. |
* ccs_open_control - open() for /proc/ccs/ interface. |
2535 |
* |
* |
2536 |
* @type: Type of interface. |
* @type: Type of interface. |
2537 |
* @file: Pointer to "struct file". |
* @file: Pointer to "struct file". |
2538 |
* |
* |
2539 |
* Associates policy handler and returns 0 on success, -ENOMEM otherwise. |
* Returns 0 on success, negative value otherwise. |
2540 |
*/ |
*/ |
2541 |
int ccs_open_control(const u8 type, struct file *file) |
int ccs_open_control(const u8 type, struct file *file) |
2542 |
{ |
{ |
2554 |
head->write = ccs_write_exception; |
head->write = ccs_write_exception; |
2555 |
head->read = ccs_read_exception; |
head->read = ccs_read_exception; |
2556 |
break; |
break; |
2557 |
#ifdef CONFIG_CCSECURITY_AUDIT |
case CCS_AUDIT: /* /proc/ccs/audit */ |
|
case CCS_GRANTLOG: /* /proc/ccs/grant_log */ |
|
|
case CCS_REJECTLOG: /* /proc/ccs/reject_log */ |
|
2558 |
head->poll = ccs_poll_log; |
head->poll = ccs_poll_log; |
2559 |
head->read = ccs_read_log; |
head->read = ccs_read_log; |
2560 |
break; |
break; |
|
#endif |
|
|
case CCS_SELFDOMAIN: /* /proc/ccs/self_domain */ |
|
|
head->read = ccs_read_self_domain; |
|
|
break; |
|
2561 |
case CCS_DOMAIN_STATUS: /* /proc/ccs/.domain_status */ |
case CCS_DOMAIN_STATUS: /* /proc/ccs/.domain_status */ |
2562 |
head->write = ccs_write_domain_profile; |
head->write = ccs_write_domain_profile; |
2563 |
head->read = ccs_read_domain_profile; |
head->read = ccs_read_domain_profile; |
2564 |
break; |
break; |
2565 |
case CCS_EXECUTE_HANDLER: /* /proc/ccs/.execute_handler */ |
case CCS_EXECUTE_HANDLER: /* /proc/ccs/.execute_handler */ |
2566 |
/* Allow execute_handler to read process's status. */ |
/* Allow execute_handler to read process's status. */ |
2567 |
if (!(current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER)) { |
if (!(ccs_current_flags() & CCS_TASK_IS_EXECUTE_HANDLER)) { |
2568 |
kfree(head); |
kfree(head); |
2569 |
return -EPERM; |
return -EPERM; |
2570 |
} |
} |
2577 |
head->read = ccs_read_version; |
head->read = ccs_read_version; |
2578 |
head->readbuf_size = 128; |
head->readbuf_size = 128; |
2579 |
break; |
break; |
2580 |
|
case CCS_STAT: /* /proc/ccs/stat */ |
2581 |
|
head->write = ccs_write_stat; |
2582 |
|
head->read = ccs_read_stat; |
2583 |
|
head->readbuf_size = 1024; |
2584 |
|
break; |
2585 |
case CCS_MEMINFO: /* /proc/ccs/meminfo */ |
case CCS_MEMINFO: /* /proc/ccs/meminfo */ |
2586 |
head->write = ccs_write_memory_quota; |
head->write = ccs_write_memory_quota; |
2587 |
head->read = ccs_read_memory_counter; |
head->read = ccs_read_memory_counter; |
2633 |
return -ENOMEM; |
return -ENOMEM; |
2634 |
} |
} |
2635 |
} |
} |
|
if (type != CCS_QUERY && |
|
|
type != CCS_GRANTLOG && type != CCS_REJECTLOG) |
|
|
head->reader_idx = ccs_lock(); |
|
|
file->private_data = head; |
|
|
/* |
|
|
* Call the handler now if the file is /proc/ccs/self_domain |
|
|
* so that the user can use "cat < /proc/ccs/self_domain" to |
|
|
* know the current process's domainname. |
|
|
*/ |
|
|
if (type == CCS_SELFDOMAIN) |
|
|
ccs_read_control(file, NULL, 0); |
|
2636 |
/* |
/* |
2637 |
* If the file is /proc/ccs/query , increment the observer counter. |
* If the file is /proc/ccs/query, increment the observer counter. |
2638 |
* The obserber counter is used by ccs_supervisor() to see if |
* The obserber counter is used by ccs_supervisor() to see if |
2639 |
* there is some process monitoring /proc/ccs/query. |
* there is some process monitoring /proc/ccs/query. |
2640 |
*/ |
*/ |
2641 |
else if (type == CCS_QUERY) |
if (type == CCS_QUERY) |
2642 |
atomic_inc(&ccs_query_observers); |
atomic_inc(&ccs_query_observers); |
2643 |
|
else if (type != CCS_AUDIT && type != CCS_VERSION && |
2644 |
|
type != CCS_MEMINFO && type != CCS_STAT) |
2645 |
|
head->reader_idx = ccs_lock(); |
2646 |
|
file->private_data = head; |
2647 |
return 0; |
return 0; |
2648 |
} |
} |
2649 |
|
|
2653 |
* @file: Pointer to "struct file". |
* @file: Pointer to "struct file". |
2654 |
* @wait: Pointer to "poll_table". |
* @wait: Pointer to "poll_table". |
2655 |
* |
* |
2656 |
|
* Returns return value of poll(). |
2657 |
|
* |
2658 |
* Waits for read readiness. |
* Waits for read readiness. |
2659 |
* /proc/ccs/query is handled by /usr/sbin/ccs-queryd and |
* /proc/ccs/query is handled by /usr/sbin/ccs-queryd and |
2660 |
* /proc/ccs/grant_log and /proc/ccs/reject_log are handled by |
* /proc/ccs/audit is handled by /usr/sbin/ccs-auditd. |
|
* /usr/sbin/ccs-auditd . |
|
2661 |
*/ |
*/ |
2662 |
int ccs_poll_control(struct file *file, poll_table *wait) |
int ccs_poll_control(struct file *file, poll_table *wait) |
2663 |
{ |
{ |
2760 |
cp0[head->w.avail - 1] = '\0'; |
cp0[head->w.avail - 1] = '\0'; |
2761 |
head->w.avail = 0; |
head->w.avail = 0; |
2762 |
ccs_normalize_line(cp0); |
ccs_normalize_line(cp0); |
2763 |
head->write(head); |
if (head->write(head)) |
2764 |
|
continue; |
2765 |
|
switch (head->type) { |
2766 |
|
case CCS_DOMAINPOLICY: |
2767 |
|
case CCS_EXCEPTIONPOLICY: |
2768 |
|
case CCS_DOMAIN_STATUS: |
2769 |
|
case CCS_MEMINFO: |
2770 |
|
case CCS_PROFILE: |
2771 |
|
case CCS_MANAGER: |
2772 |
|
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
2773 |
|
} |
2774 |
} |
} |
2775 |
ccs_read_unlock(idx); |
ccs_read_unlock(idx); |
2776 |
mutex_unlock(&head->io_sem); |
mutex_unlock(&head->io_sem); |
2782 |
* |
* |
2783 |
* @file: Pointer to "struct file". |
* @file: Pointer to "struct file". |
2784 |
* |
* |
2785 |
* Releases memory and returns 0. |
* Returns 0. |
2786 |
*/ |
*/ |
2787 |
int ccs_close_control(struct file *file) |
int ccs_close_control(struct file *file) |
2788 |
{ |
{ |
2790 |
const bool is_write = head->write_buf != NULL; |
const bool is_write = head->write_buf != NULL; |
2791 |
const u8 type = head->type; |
const u8 type = head->type; |
2792 |
/* |
/* |
2793 |
* If the file is /proc/ccs/query , decrement the observer counter. |
* If the file is /proc/ccs/query, decrement the observer counter. |
2794 |
*/ |
*/ |
2795 |
if (type == CCS_QUERY) |
if (type == CCS_QUERY) { |
2796 |
atomic_dec(&ccs_query_observers); |
if (atomic_dec_and_test(&ccs_query_observers)) |
2797 |
if (type != CCS_QUERY && |
wake_up_all(&ccs_answer_wait); |
2798 |
type != CCS_GRANTLOG && type != CCS_REJECTLOG) |
} else if (type != CCS_AUDIT && type != CCS_VERSION && |
2799 |
|
type != CCS_MEMINFO && type != CCS_STAT) |
2800 |
ccs_unlock(head->reader_idx); |
ccs_unlock(head->reader_idx); |
2801 |
/* Release memory used for policy I/O. */ |
/* Release memory used for policy I/O. */ |
2802 |
kfree(head->read_buf); |
kfree(head->read_buf); |
2811 |
return 0; |
return 0; |
2812 |
} |
} |
2813 |
|
|
2814 |
|
/** |
2815 |
|
* ccs_policy_io_init - Register hooks for policy I/O. |
2816 |
|
* |
2817 |
|
* Returns nothing. |
2818 |
|
*/ |
2819 |
void __init ccs_policy_io_init(void) |
void __init ccs_policy_io_init(void) |
2820 |
{ |
{ |
2821 |
ccsecurity_ops.check_profile = ccs_check_profile; |
ccsecurity_ops.check_profile = ccs_check_profile; |