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/* |
/* |
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* security/ccsecurity/policy_io.c |
* security/ccsecurity/policy_io.c |
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* |
* |
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* Copyright (C) 2005-2009 NTT DATA CORPORATION |
* Copyright (C) 2005-2011 NTT DATA CORPORATION |
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* |
* |
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* Version: 1.7.0-pre 2009/08/08 |
* Version: 1.8.1+ 2011/05/11 |
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*/ |
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#include "internal.h" |
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 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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* This file is applicable to both 2.4.30 and 2.6.11 and later. |
* @wq: The waitqueue to wait on. |
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* See README.ccs for ChangeLog. |
* @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 |
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/** |
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* list_for_each_cookie - iterate over a list with cookie. |
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* |
* |
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* @pos: Pointer to "struct list_head". |
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* @head: Pointer to "struct list_head". |
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*/ |
*/ |
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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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#include "internal.h" |
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/* Lock for protecting ccs_profile->comment */ |
/* Profile version. Currently only 20100903 is defined. */ |
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static DEFINE_SPINLOCK(ccs_profile_comment_lock); |
static unsigned int ccs_profile_version; |
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/* String table for functionality that takes 2 modes. */ |
/* Profile table. Memory is allocated as needed. */ |
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static const char *ccs_mode_2[2] = { |
static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
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"disabled", "enabled" |
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/* String table for operation mode. */ |
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const char * const ccs_mode[CCS_CONFIG_MAX_MODE] = { |
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[CCS_CONFIG_DISABLED] = "disabled", |
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[CCS_CONFIG_LEARNING] = "learning", |
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[CCS_CONFIG_PERMISSIVE] = "permissive", |
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[CCS_CONFIG_ENFORCING] = "enforcing" |
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}; |
}; |
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static const char *ccs_mode_4[4] = { |
/* String table for /proc/ccs/profile interface. */ |
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"disabled", "learning", "permissive", "enforcing" |
const char * const ccs_mac_keywords[CCS_MAX_MAC_INDEX |
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+ CCS_MAX_MAC_CATEGORY_INDEX] = { |
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/* CONFIG::file group */ |
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[CCS_MAC_FILE_EXECUTE] = "execute", |
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[CCS_MAC_FILE_OPEN] = "open", |
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[CCS_MAC_FILE_CREATE] = "create", |
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[CCS_MAC_FILE_UNLINK] = "unlink", |
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[CCS_MAC_FILE_GETATTR] = "getattr", |
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[CCS_MAC_FILE_MKDIR] = "mkdir", |
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[CCS_MAC_FILE_RMDIR] = "rmdir", |
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[CCS_MAC_FILE_MKFIFO] = "mkfifo", |
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[CCS_MAC_FILE_MKSOCK] = "mksock", |
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[CCS_MAC_FILE_TRUNCATE] = "truncate", |
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[CCS_MAC_FILE_SYMLINK] = "symlink", |
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[CCS_MAC_FILE_MKBLOCK] = "mkblock", |
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[CCS_MAC_FILE_MKCHAR] = "mkchar", |
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[CCS_MAC_FILE_LINK] = "link", |
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[CCS_MAC_FILE_RENAME] = "rename", |
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[CCS_MAC_FILE_CHMOD] = "chmod", |
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[CCS_MAC_FILE_CHOWN] = "chown", |
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[CCS_MAC_FILE_CHGRP] = "chgrp", |
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[CCS_MAC_FILE_IOCTL] = "ioctl", |
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[CCS_MAC_FILE_CHROOT] = "chroot", |
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[CCS_MAC_FILE_MOUNT] = "mount", |
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[CCS_MAC_FILE_UMOUNT] = "unmount", |
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[CCS_MAC_FILE_PIVOT_ROOT] = "pivot_root", |
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/* CONFIG::misc group */ |
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[CCS_MAC_ENVIRON] = "env", |
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/* CONFIG::network group */ |
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[CCS_MAC_NETWORK_INET_STREAM_BIND] = "inet_stream_bind", |
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[CCS_MAC_NETWORK_INET_STREAM_LISTEN] = "inet_stream_listen", |
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[CCS_MAC_NETWORK_INET_STREAM_CONNECT] = "inet_stream_connect", |
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[CCS_MAC_NETWORK_INET_STREAM_ACCEPT] = "inet_stream_accept", |
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[CCS_MAC_NETWORK_INET_DGRAM_BIND] = "inet_dgram_bind", |
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[CCS_MAC_NETWORK_INET_DGRAM_SEND] = "inet_dgram_send", |
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[CCS_MAC_NETWORK_INET_DGRAM_RECV] = "inet_dgram_recv", |
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[CCS_MAC_NETWORK_INET_RAW_BIND] = "inet_raw_bind", |
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[CCS_MAC_NETWORK_INET_RAW_SEND] = "inet_raw_send", |
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[CCS_MAC_NETWORK_INET_RAW_RECV] = "inet_raw_recv", |
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[CCS_MAC_NETWORK_UNIX_STREAM_BIND] = "unix_stream_bind", |
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[CCS_MAC_NETWORK_UNIX_STREAM_LISTEN] = "unix_stream_listen", |
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[CCS_MAC_NETWORK_UNIX_STREAM_CONNECT] = "unix_stream_connect", |
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[CCS_MAC_NETWORK_UNIX_STREAM_ACCEPT] = "unix_stream_accept", |
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[CCS_MAC_NETWORK_UNIX_DGRAM_BIND] = "unix_dgram_bind", |
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[CCS_MAC_NETWORK_UNIX_DGRAM_SEND] = "unix_dgram_send", |
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[CCS_MAC_NETWORK_UNIX_DGRAM_RECV] = "unix_dgram_recv", |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_BIND] = "unix_seqpacket_bind", |
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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", |
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/* CONFIG::ipc group */ |
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[CCS_MAC_SIGNAL] = "signal", |
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/* CONFIG::capability group */ |
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[CCS_MAC_CAPABILITY_USE_ROUTE_SOCKET] = "use_route", |
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[CCS_MAC_CAPABILITY_USE_PACKET_SOCKET] = "use_packet", |
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[CCS_MAC_CAPABILITY_SYS_REBOOT] = "SYS_REBOOT", |
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[CCS_MAC_CAPABILITY_SYS_VHANGUP] = "SYS_VHANGUP", |
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[CCS_MAC_CAPABILITY_SYS_SETTIME] = "SYS_TIME", |
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[CCS_MAC_CAPABILITY_SYS_NICE] = "SYS_NICE", |
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[CCS_MAC_CAPABILITY_SYS_SETHOSTNAME] = "SYS_SETHOSTNAME", |
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[CCS_MAC_CAPABILITY_USE_KERNEL_MODULE] = "use_kernel_module", |
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[CCS_MAC_CAPABILITY_SYS_KEXEC_LOAD] = "SYS_KEXEC_LOAD", |
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[CCS_MAC_CAPABILITY_SYS_PTRACE] = "SYS_PTRACE", |
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/* CONFIG group */ |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_FILE] = "file", |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_NETWORK] = "network", |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_MISC] = "misc", |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_IPC] = "ipc", |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
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}; |
}; |
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static bool ccs_mac_keywords_used[CCS_MAX_MAC_INDEX + |
/* String table for path operation. */ |
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CCS_MAX_CAPABILITY_INDEX]; |
const char * const ccs_path_keyword[CCS_MAX_PATH_OPERATION] = { |
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[CCS_TYPE_EXECUTE] = "execute", |
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[CCS_TYPE_READ] = "read", |
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[CCS_TYPE_WRITE] = "write", |
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[CCS_TYPE_APPEND] = "append", |
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[CCS_TYPE_UNLINK] = "unlink", |
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[CCS_TYPE_GETATTR] = "getattr", |
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[CCS_TYPE_RMDIR] = "rmdir", |
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[CCS_TYPE_TRUNCATE] = "truncate", |
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[CCS_TYPE_SYMLINK] = "symlink", |
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[CCS_TYPE_CHROOT] = "chroot", |
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[CCS_TYPE_UMOUNT] = "unmount", |
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}; |
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static const char *ccs_mac_keywords[CCS_MAX_MAC_INDEX + |
/* String table for categories. */ |
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CCS_MAX_CAPABILITY_INDEX] = { |
static const char * const ccs_category_keywords[CCS_MAX_MAC_CATEGORY_INDEX] = { |
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[CCS_MAC_EXECUTE] = "execute", |
[CCS_MAC_CATEGORY_FILE] = "file", |
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[CCS_MAC_OPEN] = "open", |
[CCS_MAC_CATEGORY_NETWORK] = "network", |
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[CCS_MAC_CREATE] = "create", |
[CCS_MAC_CATEGORY_MISC] = "misc", |
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[CCS_MAC_UNLINK] = "unlink", |
[CCS_MAC_CATEGORY_IPC] = "ipc", |
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[CCS_MAC_MKDIR] = "mkdir", |
[CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
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[CCS_MAC_RMDIR] = "rmdir", |
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[CCS_MAC_MKFIFO] = "mkfifo", |
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[CCS_MAC_MKSOCK] = "mksock", |
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[CCS_MAC_TRUNCATE] = "truncate", |
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[CCS_MAC_SYMLINK] = "symlink", |
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[CCS_MAC_REWRITE] = "rewrite", |
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[CCS_MAC_MKBLOCK] = "mkblock", |
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[CCS_MAC_MKCHAR] = "mkchar", |
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[CCS_MAC_LINK] = "link", |
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[CCS_MAC_RENAME] = "rename", |
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[CCS_MAC_CHMOD] = "chmod", |
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[CCS_MAC_CHOWN] = "chown", |
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[CCS_MAC_CHGRP] = "chgrp", |
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[CCS_MAC_IOCTL] = "ioctl", |
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[CCS_MAC_CHROOT] = "chroot", |
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[CCS_MAC_MOUNT] = "mount", |
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[CCS_MAC_UMOUNT] = "umount", |
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[CCS_MAC_PIVOT_ROOT] = "pivot_root", |
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[CCS_MAC_ENVIRON] = "env", |
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[CCS_MAC_NETWORK] = "network", |
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[CCS_MAC_SIGNAL] = "signal", |
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[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CREATE] |
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= "inet_tcp_create", |
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[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_LISTEN] |
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= "inet_tcp_listen", |
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[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CONNECT] |
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= "inet_tcp_connect", |
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[CCS_MAX_MAC_INDEX + CCS_USE_INET_DGRAM_SOCKET] = "use_inet_udp", |
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[CCS_MAX_MAC_INDEX + CCS_USE_INET_RAW_SOCKET] = "use_inet_ip", |
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[CCS_MAX_MAC_INDEX + CCS_USE_ROUTE_SOCKET] = "use_route", |
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[CCS_MAX_MAC_INDEX + CCS_USE_PACKET_SOCKET] = "use_packet", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_MOUNT] = "SYS_MOUNT", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_UMOUNT] = "SYS_UMOUNT", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_REBOOT] = "SYS_REBOOT", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_CHROOT] = "SYS_CHROOT", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_KILL] = "SYS_KILL", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_VHANGUP] = "SYS_VHANGUP", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_SETTIME] = "SYS_TIME", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_NICE] = "SYS_NICE", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_SETHOSTNAME] = "SYS_SETHOSTNAME", |
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[CCS_MAX_MAC_INDEX + CCS_USE_KERNEL_MODULE] = "use_kernel_module", |
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[CCS_MAX_MAC_INDEX + CCS_CREATE_FIFO] = "create_fifo", |
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[CCS_MAX_MAC_INDEX + CCS_CREATE_BLOCK_DEV] = "create_block_dev", |
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[CCS_MAX_MAC_INDEX + CCS_CREATE_CHAR_DEV] = "create_char_dev", |
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[CCS_MAX_MAC_INDEX + CCS_CREATE_UNIX_SOCKET] = "create_unix_socket", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_LINK] = "SYS_LINK", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_SYMLINK] = "SYS_SYMLINK", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_RENAME] = "SYS_RENAME", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_UNLINK] = "SYS_UNLINK", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_CHMOD] = "SYS_CHMOD", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_CHOWN] = "SYS_CHOWN", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_IOCTL] = "SYS_IOCTL", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_KEXEC_LOAD] = "SYS_KEXEC_LOAD", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_PIVOT_ROOT] = "SYS_PIVOT_ROOT", |
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[CCS_MAX_MAC_INDEX + CCS_SYS_PTRACE] = "SYS_PTRACE", |
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[CCS_MAX_MAC_INDEX + CCS_CONCEAL_MOUNT] = "conceal_mount" |
|
| 191 |
}; |
}; |
| 192 |
|
|
| 193 |
/* Table for profile. */ |
/* String table for conditions. */ |
| 194 |
static struct { |
const char * const ccs_condition_keyword[CCS_MAX_CONDITION_KEYWORD] = { |
| 195 |
const char *keyword; |
[CCS_TASK_UID] = "task.uid", |
| 196 |
unsigned int current_value; |
[CCS_TASK_EUID] = "task.euid", |
| 197 |
const unsigned int max_value; |
[CCS_TASK_SUID] = "task.suid", |
| 198 |
} ccs_control_array[CCS_MAX_CONTROL_INDEX] = { |
[CCS_TASK_FSUID] = "task.fsuid", |
| 199 |
[CCS_AUTOLEARN_EXEC_REALPATH] = { "AUTOLEARN_EXEC_REALPATH", 0, 1 }, |
[CCS_TASK_GID] = "task.gid", |
| 200 |
[CCS_AUTOLEARN_EXEC_ARGV0] = { "AUTOLEARN_EXEC_ARGV0", 0, 1 }, |
[CCS_TASK_EGID] = "task.egid", |
| 201 |
[CCS_MAX_ACCEPT_ENTRY] |
[CCS_TASK_SGID] = "task.sgid", |
| 202 |
= { "MAX_ACCEPT_ENTRY", CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY, INT_MAX }, |
[CCS_TASK_FSGID] = "task.fsgid", |
| 203 |
#ifdef CONFIG_CCSECURITY_AUDIT |
[CCS_TASK_PID] = "task.pid", |
| 204 |
[CCS_MAX_GRANT_LOG] |
[CCS_TASK_PPID] = "task.ppid", |
| 205 |
= { "MAX_GRANT_LOG", CONFIG_CCSECURITY_MAX_GRANT_LOG, INT_MAX }, |
[CCS_EXEC_ARGC] = "exec.argc", |
| 206 |
[CCS_MAX_REJECT_LOG] |
[CCS_EXEC_ENVC] = "exec.envc", |
| 207 |
= { "MAX_REJECT_LOG", CONFIG_CCSECURITY_MAX_REJECT_LOG, INT_MAX }, |
[CCS_TYPE_IS_SOCKET] = "socket", |
| 208 |
#endif |
[CCS_TYPE_IS_SYMLINK] = "symlink", |
| 209 |
[CCS_VERBOSE] = { "PRINT_VIOLATION", 1, 1 }, |
[CCS_TYPE_IS_FILE] = "file", |
| 210 |
[CCS_SLEEP_PERIOD] = { "SLEEP_PERIOD", 0, 3000 }, /* in 0.1 second */ |
[CCS_TYPE_IS_BLOCK_DEV] = "block", |
| 211 |
|
[CCS_TYPE_IS_DIRECTORY] = "directory", |
| 212 |
|
[CCS_TYPE_IS_CHAR_DEV] = "char", |
| 213 |
|
[CCS_TYPE_IS_FIFO] = "fifo", |
| 214 |
|
[CCS_MODE_SETUID] = "setuid", |
| 215 |
|
[CCS_MODE_SETGID] = "setgid", |
| 216 |
|
[CCS_MODE_STICKY] = "sticky", |
| 217 |
|
[CCS_MODE_OWNER_READ] = "owner_read", |
| 218 |
|
[CCS_MODE_OWNER_WRITE] = "owner_write", |
| 219 |
|
[CCS_MODE_OWNER_EXECUTE] = "owner_execute", |
| 220 |
|
[CCS_MODE_GROUP_READ] = "group_read", |
| 221 |
|
[CCS_MODE_GROUP_WRITE] = "group_write", |
| 222 |
|
[CCS_MODE_GROUP_EXECUTE] = "group_execute", |
| 223 |
|
[CCS_MODE_OTHERS_READ] = "others_read", |
| 224 |
|
[CCS_MODE_OTHERS_WRITE] = "others_write", |
| 225 |
|
[CCS_MODE_OTHERS_EXECUTE] = "others_execute", |
| 226 |
|
[CCS_TASK_TYPE] = "task.type", |
| 227 |
|
[CCS_TASK_EXECUTE_HANDLER] = "execute_handler", |
| 228 |
|
[CCS_EXEC_REALPATH] = "exec.realpath", |
| 229 |
|
[CCS_SYMLINK_TARGET] = "symlink.target", |
| 230 |
|
[CCS_PATH1_UID] = "path1.uid", |
| 231 |
|
[CCS_PATH1_GID] = "path1.gid", |
| 232 |
|
[CCS_PATH1_INO] = "path1.ino", |
| 233 |
|
[CCS_PATH1_MAJOR] = "path1.major", |
| 234 |
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[CCS_PATH1_MINOR] = "path1.minor", |
| 235 |
|
[CCS_PATH1_PERM] = "path1.perm", |
| 236 |
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[CCS_PATH1_TYPE] = "path1.type", |
| 237 |
|
[CCS_PATH1_DEV_MAJOR] = "path1.dev_major", |
| 238 |
|
[CCS_PATH1_DEV_MINOR] = "path1.dev_minor", |
| 239 |
|
[CCS_PATH2_UID] = "path2.uid", |
| 240 |
|
[CCS_PATH2_GID] = "path2.gid", |
| 241 |
|
[CCS_PATH2_INO] = "path2.ino", |
| 242 |
|
[CCS_PATH2_MAJOR] = "path2.major", |
| 243 |
|
[CCS_PATH2_MINOR] = "path2.minor", |
| 244 |
|
[CCS_PATH2_PERM] = "path2.perm", |
| 245 |
|
[CCS_PATH2_TYPE] = "path2.type", |
| 246 |
|
[CCS_PATH2_DEV_MAJOR] = "path2.dev_major", |
| 247 |
|
[CCS_PATH2_DEV_MINOR] = "path2.dev_minor", |
| 248 |
|
[CCS_PATH1_PARENT_UID] = "path1.parent.uid", |
| 249 |
|
[CCS_PATH1_PARENT_GID] = "path1.parent.gid", |
| 250 |
|
[CCS_PATH1_PARENT_INO] = "path1.parent.ino", |
| 251 |
|
[CCS_PATH1_PARENT_PERM] = "path1.parent.perm", |
| 252 |
|
[CCS_PATH2_PARENT_UID] = "path2.parent.uid", |
| 253 |
|
[CCS_PATH2_PARENT_GID] = "path2.parent.gid", |
| 254 |
|
[CCS_PATH2_PARENT_INO] = "path2.parent.ino", |
| 255 |
|
[CCS_PATH2_PARENT_PERM] = "path2.parent.perm", |
| 256 |
|
}; |
| 257 |
|
|
| 258 |
|
/* String table for PREFERENCE keyword. */ |
| 259 |
|
static const char * const ccs_pref_keywords[CCS_MAX_PREF] = { |
| 260 |
|
[CCS_PREF_MAX_AUDIT_LOG] = "max_audit_log", |
| 261 |
|
[CCS_PREF_MAX_LEARNING_ENTRY] = "max_learning_entry", |
| 262 |
|
[CCS_PREF_ENFORCING_PENALTY] = "enforcing_penalty", |
| 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] : NULL; |
|
| 278 |
} |
} |
| 279 |
|
|
| 280 |
|
/* Prototype for ccs_addprintf(). */ |
| 281 |
|
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
| 282 |
|
__attribute__ ((format(printf, 3, 4))); |
| 283 |
|
|
| 284 |
/** |
/** |
| 285 |
* ccs_quiet_setup - Set CCS_VERBOSE=0 by default. |
* ccs_addprintf - strncat()-like-snprintf(). |
| 286 |
* |
* |
| 287 |
* @str: Unused. |
* @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 0. |
* Returns nothing. |
| 292 |
*/ |
*/ |
| 293 |
static int __init ccs_quiet_setup(char *str) |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
| 294 |
{ |
{ |
| 295 |
ccs_control_array[CCS_VERBOSE].current_value = 0; |
va_list args; |
| 296 |
return 0; |
const int pos = strlen(buffer); |
| 297 |
|
va_start(args, fmt); |
| 298 |
|
vsnprintf(buffer + pos, len - pos - 1, fmt, args); |
| 299 |
|
va_end(args); |
| 300 |
|
} |
| 301 |
|
|
| 302 |
|
/** |
| 303 |
|
* ccs_flush - Flush queued string to userspace's buffer. |
| 304 |
|
* |
| 305 |
|
* @head: Pointer to "struct ccs_io_buffer". |
| 306 |
|
* |
| 307 |
|
* Returns true if all data was flushed, false otherwise. |
| 308 |
|
*/ |
| 309 |
|
static bool ccs_flush(struct ccs_io_buffer *head) |
| 310 |
|
{ |
| 311 |
|
while (head->r.w_pos) { |
| 312 |
|
const char *w = head->r.w[0]; |
| 313 |
|
size_t len = strlen(w); |
| 314 |
|
if (len) { |
| 315 |
|
if (len > head->read_user_buf_avail) |
| 316 |
|
len = head->read_user_buf_avail; |
| 317 |
|
if (!len) |
| 318 |
|
return false; |
| 319 |
|
if (copy_to_user(head->read_user_buf, w, len)) |
| 320 |
|
return false; |
| 321 |
|
head->read_user_buf_avail -= len; |
| 322 |
|
head->read_user_buf += len; |
| 323 |
|
w += len; |
| 324 |
|
} |
| 325 |
|
head->r.w[0] = w; |
| 326 |
|
if (*w) |
| 327 |
|
return false; |
| 328 |
|
/* Add '\0' for audit logs and query. */ |
| 329 |
|
if (head->poll) { |
| 330 |
|
if (!head->read_user_buf_avail || |
| 331 |
|
copy_to_user(head->read_user_buf, "", 1)) |
| 332 |
|
return false; |
| 333 |
|
head->read_user_buf_avail--; |
| 334 |
|
head->read_user_buf++; |
| 335 |
|
} |
| 336 |
|
head->r.w_pos--; |
| 337 |
|
for (len = 0; len < head->r.w_pos; len++) |
| 338 |
|
head->r.w[len] = head->r.w[len + 1]; |
| 339 |
|
} |
| 340 |
|
head->r.avail = 0; |
| 341 |
|
return true; |
| 342 |
} |
} |
| 343 |
|
|
| 344 |
__setup("CCS_QUIET", ccs_quiet_setup); |
/** |
| 345 |
|
* ccs_set_string - Queue string to "struct ccs_io_buffer" structure. |
| 346 |
|
* |
| 347 |
|
* @head: Pointer to "struct ccs_io_buffer". |
| 348 |
|
* @string: String to print. |
| 349 |
|
* |
| 350 |
|
* Returns nothing. |
| 351 |
|
* |
| 352 |
|
* Note that @string has to be kept valid until @head is kfree()d. |
| 353 |
|
* This means that char[] allocated on stack memory cannot be passed to |
| 354 |
|
* this function. Use ccs_io_printf() for char[] allocated on stack memory. |
| 355 |
|
*/ |
| 356 |
|
static void ccs_set_string(struct ccs_io_buffer *head, const char *string) |
| 357 |
|
{ |
| 358 |
|
if (head->r.w_pos < CCS_MAX_IO_READ_QUEUE) { |
| 359 |
|
head->r.w[head->r.w_pos++] = string; |
| 360 |
|
ccs_flush(head); |
| 361 |
|
} else |
| 362 |
|
printk(KERN_WARNING "Too many words in a line.\n"); |
| 363 |
|
} |
| 364 |
|
|
| 365 |
|
/* Prototype for ccs_io_printf(). */ |
| 366 |
|
static void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
| 367 |
|
__attribute__ ((format(printf, 2, 3))); |
| 368 |
|
|
| 369 |
/** |
/** |
| 370 |
* ccs_io_printf - Transactional printf() to "struct ccs_io_buffer" structure. |
* ccs_io_printf - printf() to "struct ccs_io_buffer" structure. |
| 371 |
* |
* |
| 372 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 373 |
* @fmt: The printf()'s format string, followed by parameters. |
* @fmt: The printf()'s format string, followed by parameters. |
| 374 |
* |
* |
| 375 |
* Returns true on success, false otherwise. |
* Returns nothing. |
|
* |
|
|
* The snprintf() will truncate, but ccs_io_printf() won't. |
|
| 376 |
*/ |
*/ |
| 377 |
bool ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
static void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
| 378 |
{ |
{ |
| 379 |
va_list args; |
va_list args; |
| 380 |
int len; |
size_t len; |
| 381 |
int pos = head->read_avail; |
size_t pos = head->r.avail; |
| 382 |
int size = head->readbuf_size - pos; |
int size = head->readbuf_size - pos; |
| 383 |
if (size <= 0) |
if (size <= 0) |
| 384 |
return false; |
return; |
| 385 |
va_start(args, fmt); |
va_start(args, fmt); |
| 386 |
len = vsnprintf(head->read_buf + pos, size, fmt, args); |
len = vsnprintf(head->read_buf + pos, size, fmt, args) + 1; |
| 387 |
va_end(args); |
va_end(args); |
| 388 |
if (pos + len >= head->readbuf_size) |
if (pos + len >= head->readbuf_size) { |
| 389 |
return false; |
printk(KERN_WARNING "Too many words in a line.\n"); |
| 390 |
head->read_avail += len; |
return; |
| 391 |
return true; |
} |
| 392 |
|
head->r.avail += len; |
| 393 |
|
ccs_set_string(head, head->read_buf + pos); |
| 394 |
} |
} |
| 395 |
|
|
| 396 |
/** |
/** |
| 397 |
* ccs_find_or_assign_new_profile - Create a new profile. |
* ccs_set_space - Put a space to "struct ccs_io_buffer" structure. |
| 398 |
|
* |
| 399 |
|
* @head: Pointer to "struct ccs_io_buffer". |
| 400 |
|
* |
| 401 |
|
* Returns nothing. |
| 402 |
|
*/ |
| 403 |
|
static void ccs_set_space(struct ccs_io_buffer *head) |
| 404 |
|
{ |
| 405 |
|
ccs_set_string(head, " "); |
| 406 |
|
} |
| 407 |
|
|
| 408 |
|
/** |
| 409 |
|
* ccs_set_lf - Put a line feed to "struct ccs_io_buffer" structure. |
| 410 |
|
* |
| 411 |
|
* @head: Pointer to "struct ccs_io_buffer". |
| 412 |
|
* |
| 413 |
|
* Returns nothing. |
| 414 |
|
*/ |
| 415 |
|
static bool ccs_set_lf(struct ccs_io_buffer *head) |
| 416 |
|
{ |
| 417 |
|
ccs_set_string(head, "\n"); |
| 418 |
|
return !head->r.w_pos; |
| 419 |
|
} |
| 420 |
|
|
| 421 |
|
/** |
| 422 |
|
* ccs_set_slash - Put a shash to "struct ccs_io_buffer" structure. |
| 423 |
|
* |
| 424 |
|
* @head: Pointer to "struct ccs_io_buffer". |
| 425 |
|
* |
| 426 |
|
* Returns nothing. |
| 427 |
|
*/ |
| 428 |
|
static void ccs_set_slash(struct ccs_io_buffer *head) |
| 429 |
|
{ |
| 430 |
|
ccs_set_string(head, "/"); |
| 431 |
|
} |
| 432 |
|
|
| 433 |
|
/** |
| 434 |
|
* ccs_assign_profile - Create a new profile. |
| 435 |
* |
* |
| 436 |
* @profile: Profile number to create. |
* @profile: Profile number to create. |
| 437 |
* |
* |
| 438 |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
| 439 |
*/ |
*/ |
| 440 |
static struct ccs_profile *ccs_find_or_assign_new_profile(const unsigned int |
static struct ccs_profile *ccs_assign_profile(const unsigned int profile) |
|
profile) |
|
| 441 |
{ |
{ |
| 442 |
struct ccs_profile *ptr; |
struct ccs_profile *ptr; |
| 443 |
struct ccs_profile *entry; |
struct ccs_profile *entry; |
|
int i; |
|
| 444 |
if (profile >= CCS_MAX_PROFILES) |
if (profile >= CCS_MAX_PROFILES) |
| 445 |
return NULL; |
return NULL; |
| 446 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
| 447 |
if (ptr) |
if (ptr) |
| 448 |
return ptr; |
return ptr; |
| 449 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
entry = kzalloc(sizeof(*entry), CCS_GFP_FLAGS); |
| 450 |
mutex_lock(&ccs_policy_lock); |
if (mutex_lock_interruptible(&ccs_policy_lock)) |
| 451 |
|
goto out; |
| 452 |
ptr = ccs_profile_ptr[profile]; |
ptr = ccs_profile_ptr[profile]; |
| 453 |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
| 454 |
ptr = entry; |
ptr = entry; |
| 455 |
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) |
ptr->default_config = CCS_CONFIG_DISABLED | |
| 456 |
ptr->value[i] = ccs_control_array[i].current_value; |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
| 457 |
|
memset(ptr->config, CCS_CONFIG_USE_DEFAULT, |
| 458 |
|
sizeof(ptr->config)); |
| 459 |
|
ptr->pref[CCS_PREF_MAX_AUDIT_LOG] = |
| 460 |
|
CONFIG_CCSECURITY_MAX_AUDIT_LOG; |
| 461 |
|
ptr->pref[CCS_PREF_MAX_LEARNING_ENTRY] = |
| 462 |
|
CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY; |
| 463 |
mb(); /* Avoid out-of-order execution. */ |
mb(); /* Avoid out-of-order execution. */ |
| 464 |
ccs_profile_ptr[profile] = ptr; |
ccs_profile_ptr[profile] = ptr; |
| 465 |
entry = NULL; |
entry = NULL; |
| 466 |
} |
} |
| 467 |
mutex_unlock(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
| 468 |
|
out: |
| 469 |
kfree(entry); |
kfree(entry); |
| 470 |
return ptr; |
return ptr; |
| 471 |
} |
} |
| 472 |
|
|
| 473 |
/** |
/** |
| 474 |
|
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
| 475 |
|
* |
| 476 |
|
* Returns nothing. |
| 477 |
|
*/ |
| 478 |
|
static void ccs_check_profile(void) |
| 479 |
|
{ |
| 480 |
|
struct ccs_domain_info *domain; |
| 481 |
|
const int idx = ccs_read_lock(); |
| 482 |
|
ccs_policy_loaded = true; |
| 483 |
|
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
| 484 |
|
const u8 profile = domain->profile; |
| 485 |
|
if (ccs_profile_ptr[profile]) |
| 486 |
|
continue; |
| 487 |
|
printk(KERN_ERR "Profile %u must be defined before using it.\n", |
| 488 |
|
profile); |
| 489 |
|
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
| 490 |
|
"for more information.\n"); |
| 491 |
|
panic("Profile %u (used by '%s') not defined.\n", |
| 492 |
|
profile, domain->domainname->name); |
| 493 |
|
} |
| 494 |
|
ccs_read_unlock(idx); |
| 495 |
|
if (ccs_profile_version != 20100903) { |
| 496 |
|
printk(KERN_ERR "Userland tools must be installed for " |
| 497 |
|
"TOMOYO 1.8, and policy must be initialized.\n"); |
| 498 |
|
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
| 499 |
|
"for more information.\n"); |
| 500 |
|
panic("Profile version %u is not supported.\n", |
| 501 |
|
ccs_profile_version); |
| 502 |
|
} |
| 503 |
|
printk(KERN_INFO "CCSecurity: 1.8.1+ 2011/05/11\n"); |
| 504 |
|
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
| 505 |
|
} |
| 506 |
|
|
| 507 |
|
/** |
| 508 |
|
* ccs_profile - Find a profile. |
| 509 |
|
* |
| 510 |
|
* @profile: Profile number to find. |
| 511 |
|
* |
| 512 |
|
* Returns pointer to "struct ccs_profile". |
| 513 |
|
*/ |
| 514 |
|
struct ccs_profile *ccs_profile(const u8 profile) |
| 515 |
|
{ |
| 516 |
|
static struct ccs_profile ccs_null_profile; |
| 517 |
|
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
| 518 |
|
if (!ptr) |
| 519 |
|
ptr = &ccs_null_profile; |
| 520 |
|
return ptr; |
| 521 |
|
} |
| 522 |
|
|
| 523 |
|
/** |
| 524 |
|
* ccs_find_yesno - Find values for specified keyword. |
| 525 |
|
* |
| 526 |
|
* @string: String to check. |
| 527 |
|
* @find: Name of keyword. |
| 528 |
|
* |
| 529 |
|
* Returns 1 if "@find=yes" was found, 0 if "@find=no" was found, -1 otherwise. |
| 530 |
|
*/ |
| 531 |
|
static s8 ccs_find_yesno(const char *string, const char *find) |
| 532 |
|
{ |
| 533 |
|
const char *cp = strstr(string, find); |
| 534 |
|
if (cp) { |
| 535 |
|
cp += strlen(find); |
| 536 |
|
if (!strncmp(cp, "=yes", 4)) |
| 537 |
|
return 1; |
| 538 |
|
else if (!strncmp(cp, "=no", 3)) |
| 539 |
|
return 0; |
| 540 |
|
} |
| 541 |
|
return -1; |
| 542 |
|
} |
| 543 |
|
|
| 544 |
|
/** |
| 545 |
|
* ccs_set_uint - Set value for specified preference. |
| 546 |
|
* |
| 547 |
|
* @i: Pointer to "unsigned int". |
| 548 |
|
* @string: String to check. |
| 549 |
|
* @find: Name of keyword. |
| 550 |
|
* |
| 551 |
|
* Returns nothing. |
| 552 |
|
*/ |
| 553 |
|
static void ccs_set_uint(unsigned int *i, const char *string, const char *find) |
| 554 |
|
{ |
| 555 |
|
const char *cp = strstr(string, find); |
| 556 |
|
if (cp) |
| 557 |
|
sscanf(cp + strlen(find), "=%u", i); |
| 558 |
|
} |
| 559 |
|
|
| 560 |
|
/** |
| 561 |
|
* ccs_set_mode - Set mode for specified profile. |
| 562 |
|
* |
| 563 |
|
* @name: Name of functionality. |
| 564 |
|
* @value: Mode for @name. |
| 565 |
|
* @profile: Pointer to "struct ccs_profile". |
| 566 |
|
* |
| 567 |
|
* Returns 0 on success, negative value otherwise. |
| 568 |
|
*/ |
| 569 |
|
static int ccs_set_mode(char *name, const char *value, |
| 570 |
|
struct ccs_profile *profile) |
| 571 |
|
{ |
| 572 |
|
u8 i; |
| 573 |
|
u8 config; |
| 574 |
|
if (!strcmp(name, "CONFIG")) { |
| 575 |
|
i = CCS_MAX_MAC_INDEX + CCS_MAX_MAC_CATEGORY_INDEX; |
| 576 |
|
config = profile->default_config; |
| 577 |
|
} else if (ccs_str_starts(&name, "CONFIG::")) { |
| 578 |
|
config = 0; |
| 579 |
|
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_MAC_CATEGORY_INDEX; |
| 580 |
|
i++) { |
| 581 |
|
int len = 0; |
| 582 |
|
if (i < CCS_MAX_MAC_INDEX) { |
| 583 |
|
const u8 c = ccs_index2category[i]; |
| 584 |
|
const char *category = |
| 585 |
|
ccs_category_keywords[c]; |
| 586 |
|
len = strlen(category); |
| 587 |
|
if (strncmp(name, category, len) || |
| 588 |
|
name[len++] != ':' || name[len++] != ':') |
| 589 |
|
continue; |
| 590 |
|
} |
| 591 |
|
if (strcmp(name + len, ccs_mac_keywords[i])) |
| 592 |
|
continue; |
| 593 |
|
config = profile->config[i]; |
| 594 |
|
break; |
| 595 |
|
} |
| 596 |
|
if (i == CCS_MAX_MAC_INDEX + CCS_MAX_MAC_CATEGORY_INDEX) |
| 597 |
|
return -EINVAL; |
| 598 |
|
} else { |
| 599 |
|
return -EINVAL; |
| 600 |
|
} |
| 601 |
|
if (strstr(value, "use_default")) { |
| 602 |
|
config = CCS_CONFIG_USE_DEFAULT; |
| 603 |
|
} else { |
| 604 |
|
u8 mode; |
| 605 |
|
for (mode = 0; mode < CCS_CONFIG_MAX_MODE; mode++) |
| 606 |
|
if (strstr(value, ccs_mode[mode])) |
| 607 |
|
/* |
| 608 |
|
* Update lower 3 bits in order to distinguish |
| 609 |
|
* 'config' from 'CCS_CONFIG_USE_DEAFULT'. |
| 610 |
|
*/ |
| 611 |
|
config = (config & ~7) | mode; |
| 612 |
|
if (config != CCS_CONFIG_USE_DEFAULT) { |
| 613 |
|
switch (ccs_find_yesno(value, "grant_log")) { |
| 614 |
|
case 1: |
| 615 |
|
config |= CCS_CONFIG_WANT_GRANT_LOG; |
| 616 |
|
break; |
| 617 |
|
case 0: |
| 618 |
|
config &= ~CCS_CONFIG_WANT_GRANT_LOG; |
| 619 |
|
break; |
| 620 |
|
} |
| 621 |
|
switch (ccs_find_yesno(value, "reject_log")) { |
| 622 |
|
case 1: |
| 623 |
|
config |= CCS_CONFIG_WANT_REJECT_LOG; |
| 624 |
|
break; |
| 625 |
|
case 0: |
| 626 |
|
config &= ~CCS_CONFIG_WANT_REJECT_LOG; |
| 627 |
|
break; |
| 628 |
|
} |
| 629 |
|
} |
| 630 |
|
} |
| 631 |
|
if (i < CCS_MAX_MAC_INDEX + CCS_MAX_MAC_CATEGORY_INDEX) |
| 632 |
|
profile->config[i] = config; |
| 633 |
|
else if (config != CCS_CONFIG_USE_DEFAULT) |
| 634 |
|
profile->default_config = config; |
| 635 |
|
return 0; |
| 636 |
|
} |
| 637 |
|
|
| 638 |
|
/** |
| 639 |
* ccs_write_profile - Write profile table. |
* ccs_write_profile - Write profile table. |
| 640 |
* |
* |
| 641 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 646 |
{ |
{ |
| 647 |
char *data = head->write_buf; |
char *data = head->write_buf; |
| 648 |
unsigned int i; |
unsigned int i; |
|
unsigned int value; |
|
|
int index = -1; |
|
|
int mode; |
|
| 649 |
char *cp; |
char *cp; |
| 650 |
struct ccs_profile *ccs_profile; |
struct ccs_profile *profile; |
| 651 |
|
if (sscanf(data, "PROFILE_VERSION=%u", &ccs_profile_version) == 1) |
| 652 |
|
return 0; |
| 653 |
i = simple_strtoul(data, &cp, 10); |
i = simple_strtoul(data, &cp, 10); |
| 654 |
if (data != cp) { |
if (*cp != '-') |
| 655 |
if (*cp != '-') |
return -EINVAL; |
| 656 |
return -EINVAL; |
data = cp + 1; |
| 657 |
data = cp + 1; |
profile = ccs_assign_profile(i); |
| 658 |
} |
if (!profile) |
|
ccs_profile = ccs_find_or_assign_new_profile(i); |
|
|
if (!ccs_profile) |
|
| 659 |
return -EINVAL; |
return -EINVAL; |
| 660 |
cp = strchr(data, '='); |
cp = strchr(data, '='); |
| 661 |
if (!cp) |
if (!cp) |
| 662 |
return -EINVAL; |
return -EINVAL; |
| 663 |
*cp++ = '\0'; |
*cp++ = '\0'; |
| 664 |
if (!strcmp(data, "COMMENT")) { |
if (!strcmp(data, "COMMENT")) { |
| 665 |
|
static DEFINE_SPINLOCK(lock); |
| 666 |
const struct ccs_path_info *new_comment = ccs_get_name(cp); |
const struct ccs_path_info *new_comment = ccs_get_name(cp); |
| 667 |
const struct ccs_path_info *old_comment; |
const struct ccs_path_info *old_comment; |
| 668 |
/* Protect reader from ccs_put_name(). */ |
if (!new_comment) |
| 669 |
spin_lock(&ccs_profile_comment_lock); |
return -ENOMEM; |
| 670 |
old_comment = ccs_profile->comment; |
spin_lock(&lock); |
| 671 |
ccs_profile->comment = new_comment; |
old_comment = profile->comment; |
| 672 |
spin_unlock(&ccs_profile_comment_lock); |
profile->comment = new_comment; |
| 673 |
|
spin_unlock(&lock); |
| 674 |
ccs_put_name(old_comment); |
ccs_put_name(old_comment); |
| 675 |
return 0; |
return 0; |
| 676 |
} |
} |
| 677 |
if (!ccs_str_starts(&data, "MAC::")) |
if (!strcmp(data, "PREFERENCE")) { |
| 678 |
goto not_mac; |
for (i = 0; i < CCS_MAX_PREF; i++) |
| 679 |
if (ccs_str_starts(&data, CCS_KEYWORD_CAPABILITY)) |
ccs_set_uint(&profile->pref[i], cp, |
| 680 |
for (i = 0; i < CCS_MAX_CAPABILITY_INDEX; i++) { |
ccs_pref_keywords[i]); |
|
if (strcmp(data, |
|
|
ccs_mac_keywords[CCS_MAX_MAC_INDEX + i])) |
|
|
continue; |
|
|
index = CCS_MAX_MAC_INDEX + i; |
|
|
break; |
|
|
} |
|
|
else |
|
|
for (i = 0; i < CCS_MAX_MAC_INDEX; i++) { |
|
|
if (strcmp(data, ccs_mac_keywords[i])) |
|
|
continue; |
|
|
index = i; |
|
|
break; |
|
|
} |
|
|
if (index < 0) |
|
|
return -EINVAL; |
|
|
ccs_mac_keywords_used[index] = 1; |
|
|
ccs_profile->no_grant_log[index] = !!strstr(cp, "no_grant_log"); |
|
|
ccs_profile->no_reject_log[index] = !!strstr(cp, "no_reject_log"); |
|
|
for (mode = 0; mode < 4; mode++) |
|
|
if (strstr(cp, ccs_mode_4[mode])) |
|
|
ccs_profile->mac_mode[index] = mode; |
|
|
return 0; |
|
|
not_mac: |
|
|
for (i = 0; i < CCS_MAX_CONTROL_INDEX; i++) { |
|
|
if (strcmp(data, ccs_control_array[i].keyword)) |
|
|
continue; |
|
|
if (sscanf(cp, "%u", &value) != 1) { |
|
|
int j; |
|
|
for (j = 0; j < 2; j++) { |
|
|
if (strcmp(cp, ccs_mode_2[j])) |
|
|
continue; |
|
|
value = j; |
|
|
break; |
|
|
} |
|
|
if (j == 2) |
|
|
return -EINVAL; |
|
|
} else if (value > ccs_control_array[i].max_value) { |
|
|
value = ccs_control_array[i].max_value; |
|
|
} |
|
|
ccs_profile->value[i] = value; |
|
| 681 |
return 0; |
return 0; |
| 682 |
} |
} |
| 683 |
return -EINVAL; |
return ccs_set_mode(data, cp, profile); |
| 684 |
} |
} |
| 685 |
|
|
| 686 |
static bool ccs_print_mac_mode(struct ccs_io_buffer *head, u8 index) |
/** |
| 687 |
|
* ccs_print_config - Print mode for specified functionality. |
| 688 |
|
* |
| 689 |
|
* @head: Pointer to "struct ccs_io_buffer". |
| 690 |
|
* @config: Mode for that functionality. |
| 691 |
|
* |
| 692 |
|
* Returns nothing. |
| 693 |
|
* |
| 694 |
|
* Caller prints functionality's name. |
| 695 |
|
*/ |
| 696 |
|
static void ccs_print_config(struct ccs_io_buffer *head, const u8 config) |
| 697 |
{ |
{ |
| 698 |
const int pos = head->read_avail; |
ccs_io_printf(head, "={ mode=%s grant_log=%s reject_log=%s }\n", |
| 699 |
int i; |
ccs_mode[config & 3], |
| 700 |
const struct ccs_profile *ccs_profile = ccs_profile_ptr[index]; |
ccs_yesno(config & CCS_CONFIG_WANT_GRANT_LOG), |
| 701 |
for (i = 0; i < CCS_MAX_MAC_INDEX + CCS_MAX_CAPABILITY_INDEX; i++) { |
ccs_yesno(config & CCS_CONFIG_WANT_REJECT_LOG)); |
|
if (!ccs_mac_keywords_used[i]) |
|
|
continue; |
|
|
if (!ccs_io_printf(head, "%u-MAC::%s%s=%s %s %s\n", index, |
|
|
i >= CCS_MAX_MAC_INDEX ? |
|
|
CCS_KEYWORD_CAPABILITY : "", |
|
|
ccs_mac_keywords[i], |
|
|
ccs_mode_4[ccs_profile->mac_mode[i]], |
|
|
ccs_profile->no_grant_log[i] ? |
|
|
"no_grant_log" : "", |
|
|
ccs_profile->no_reject_log[i] ? |
|
|
"no_reject_log" : "")) |
|
|
goto out; |
|
|
} |
|
|
return true; |
|
|
out: |
|
|
head->read_avail = pos; |
|
|
return false; |
|
| 702 |
} |
} |
| 703 |
|
|
| 704 |
/** |
/** |
| 706 |
* |
* |
| 707 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 708 |
* |
* |
| 709 |
* Returns 0. |
* Returns nothing. |
| 710 |
*/ |
*/ |
| 711 |
static int ccs_read_profile(struct ccs_io_buffer *head) |
static void ccs_read_profile(struct ccs_io_buffer *head) |
| 712 |
{ |
{ |
| 713 |
static const int ccs_total = CCS_MAX_CONTROL_INDEX + 2; |
u8 index; |
| 714 |
int step; |
const struct ccs_profile *profile; |
| 715 |
if (head->read_eof) |
next: |
| 716 |
return 0; |
index = head->r.index; |
| 717 |
for (step = head->read_step; step < CCS_MAX_PROFILES * ccs_total; |
profile = ccs_profile_ptr[index]; |
| 718 |
step++) { |
switch (head->r.step) { |
| 719 |
const u8 index = step / ccs_total; |
case 0: |
| 720 |
u8 type = step % ccs_total; |
ccs_io_printf(head, "PROFILE_VERSION=%u\n", 20100903); |
| 721 |
const struct ccs_profile *ccs_profile = ccs_profile_ptr[index]; |
head->r.step++; |
| 722 |
head->read_step = step; |
break; |
| 723 |
if (!ccs_profile) |
case 1: |
| 724 |
continue; |
for ( ; head->r.index < CCS_MAX_PROFILES; |
| 725 |
if (!type) { /* Print profile' comment tag. */ |
head->r.index++) |
| 726 |
bool done; |
if (ccs_profile_ptr[head->r.index]) |
|
spin_lock(&ccs_profile_comment_lock); |
|
|
done = ccs_io_printf(head, "%u-COMMENT=%s\n", |
|
|
index, ccs_profile->comment ? |
|
|
ccs_profile->comment->name : ""); |
|
|
spin_unlock(&ccs_profile_comment_lock); |
|
|
if (!done) |
|
|
break; |
|
|
continue; |
|
|
} else if (type == 1) { |
|
|
if (!ccs_print_mac_mode(head, index)) |
|
| 727 |
break; |
break; |
| 728 |
continue; |
if (head->r.index == CCS_MAX_PROFILES) |
| 729 |
|
return; |
| 730 |
|
head->r.step++; |
| 731 |
|
break; |
| 732 |
|
case 2: |
| 733 |
|
{ |
| 734 |
|
u8 i; |
| 735 |
|
const struct ccs_path_info *comment = profile->comment; |
| 736 |
|
ccs_io_printf(head, "%u-COMMENT=", index); |
| 737 |
|
ccs_set_string(head, comment ? comment->name : ""); |
| 738 |
|
ccs_set_lf(head); |
| 739 |
|
ccs_io_printf(head, "%u-PREFERENCE={ ", index); |
| 740 |
|
for (i = 0; i < CCS_MAX_PREF; i++) |
| 741 |
|
ccs_io_printf(head, "%s=%u ", |
| 742 |
|
ccs_pref_keywords[i], |
| 743 |
|
profile->pref[i]); |
| 744 |
|
ccs_set_string(head, "}\n"); |
| 745 |
|
head->r.step++; |
| 746 |
} |
} |
| 747 |
type -= 2; |
break; |
| 748 |
|
case 3: |
| 749 |
{ |
{ |
| 750 |
const unsigned int value = ccs_profile->value[type]; |
ccs_io_printf(head, "%u-%s", index, "CONFIG"); |
| 751 |
const char *keyword = ccs_control_array[type].keyword; |
ccs_print_config(head, profile->default_config); |
| 752 |
if (ccs_control_array[type].max_value == 1) { |
head->r.bit = 0; |
| 753 |
if (!ccs_io_printf(head, "%u-%s=%s\n", index, |
head->r.step++; |
|
keyword, ccs_mode_2[value])) |
|
|
break; |
|
|
} else { |
|
|
if (!ccs_io_printf(head, "%u-%s=%u\n", index, |
|
|
keyword, value)) |
|
|
break; |
|
|
} |
|
| 754 |
} |
} |
| 755 |
|
break; |
| 756 |
|
case 4: |
| 757 |
|
for ( ; head->r.bit < CCS_MAX_MAC_INDEX |
| 758 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX; head->r.bit++) { |
| 759 |
|
const u8 i = head->r.bit; |
| 760 |
|
const u8 config = profile->config[i]; |
| 761 |
|
if (config == CCS_CONFIG_USE_DEFAULT) |
| 762 |
|
continue; |
| 763 |
|
if (i < CCS_MAX_MAC_INDEX) |
| 764 |
|
ccs_io_printf(head, "%u-CONFIG::%s::%s", index, |
| 765 |
|
ccs_category_keywords |
| 766 |
|
[ccs_index2category[i]], |
| 767 |
|
ccs_mac_keywords[i]); |
| 768 |
|
else |
| 769 |
|
ccs_io_printf(head, "%u-CONFIG::%s", index, |
| 770 |
|
ccs_mac_keywords[i]); |
| 771 |
|
ccs_print_config(head, config); |
| 772 |
|
head->r.bit++; |
| 773 |
|
break; |
| 774 |
|
} |
| 775 |
|
if (head->r.bit == CCS_MAX_MAC_INDEX |
| 776 |
|
+ CCS_MAX_MAC_CATEGORY_INDEX) { |
| 777 |
|
head->r.index++; |
| 778 |
|
head->r.step = 1; |
| 779 |
|
} |
| 780 |
|
break; |
| 781 |
} |
} |
| 782 |
if (step == CCS_MAX_PROFILES * ccs_total) |
if (ccs_flush(head)) |
| 783 |
head->read_eof = true; |
goto next; |
|
return 0; |
|
| 784 |
} |
} |
| 785 |
|
|
| 786 |
/* The list for "struct ccs_policy_manager_entry". */ |
/** |
| 787 |
LIST_HEAD(ccs_policy_manager_list); |
* ccs_same_manager - Check for duplicated "struct ccs_manager" entry. |
| 788 |
|
* |
| 789 |
|
* @a: Pointer to "struct ccs_acl_head". |
| 790 |
|
* @b: Pointer to "struct ccs_acl_head". |
| 791 |
|
* |
| 792 |
|
* Returns true if @a == @b, false otherwise. |
| 793 |
|
*/ |
| 794 |
|
static bool ccs_same_manager(const struct ccs_acl_head *a, |
| 795 |
|
const struct ccs_acl_head *b) |
| 796 |
|
{ |
| 797 |
|
return container_of(a, struct ccs_manager, head)->manager |
| 798 |
|
== container_of(b, struct ccs_manager, head)->manager; |
| 799 |
|
} |
| 800 |
|
|
| 801 |
/** |
/** |
| 802 |
* ccs_update_manager_entry - Add a manager entry. |
* ccs_update_manager_entry - Add a manager entry. |
| 808 |
*/ |
*/ |
| 809 |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
| 810 |
{ |
{ |
| 811 |
struct ccs_policy_manager_entry *entry = NULL; |
struct ccs_manager e = { }; |
|
struct ccs_policy_manager_entry *ptr; |
|
|
struct ccs_policy_manager_entry e = { }; |
|
| 812 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
| 813 |
if (ccs_is_domain_def(manager)) { |
if (ccs_domain_def(manager)) { |
| 814 |
if (!ccs_is_correct_domain(manager)) |
if (!ccs_correct_domain(manager)) |
| 815 |
return -EINVAL; |
return -EINVAL; |
| 816 |
e.is_domain = true; |
e.is_domain = true; |
| 817 |
} else { |
} else { |
| 818 |
if (!ccs_is_correct_path(manager, 1, -1, -1)) |
if (!ccs_correct_path(manager)) |
| 819 |
return -EINVAL; |
return -EINVAL; |
| 820 |
} |
} |
| 821 |
e.manager = ccs_get_name(manager); |
e.manager = ccs_get_name(manager); |
| 822 |
if (!e.manager) |
if (!e.manager) |
| 823 |
return -ENOMEM; |
return error; |
| 824 |
if (!is_delete) |
error = ccs_update_policy(&e.head, sizeof(e), is_delete, |
| 825 |
entry = kmalloc(sizeof(e), GFP_KERNEL); |
&ccs_policy_list[CCS_ID_MANAGER], |
| 826 |
mutex_lock(&ccs_policy_lock); |
ccs_same_manager); |
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
|
|
if (ptr->manager != e.manager) |
|
|
continue; |
|
|
ptr->is_deleted = is_delete; |
|
|
error = 0; |
|
|
break; |
|
|
} |
|
|
if (!is_delete && error && ccs_commit_ok(entry, &e, sizeof(e))) { |
|
|
list_add_tail_rcu(&entry->list, &ccs_policy_manager_list); |
|
|
entry = NULL; |
|
|
error = 0; |
|
|
} |
|
|
mutex_unlock(&ccs_policy_lock); |
|
| 827 |
ccs_put_name(e.manager); |
ccs_put_name(e.manager); |
|
kfree(entry); |
|
| 828 |
return error; |
return error; |
| 829 |
} |
} |
| 830 |
|
|
| 831 |
/** |
/** |
| 832 |
* ccs_write_manager_policy - Write manager policy. |
* ccs_write_manager - Write manager policy. |
| 833 |
* |
* |
| 834 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 835 |
* |
* |
| 836 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
| 837 |
*/ |
*/ |
| 838 |
static int ccs_write_manager_policy(struct ccs_io_buffer *head) |
static int ccs_write_manager(struct ccs_io_buffer *head) |
| 839 |
{ |
{ |
| 840 |
char *data = head->write_buf; |
char *data = head->write_buf; |
| 841 |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
bool is_delete = ccs_str_starts(&data, "delete "); |
| 842 |
if (!strcmp(data, "manage_by_non_root")) { |
if (!strcmp(data, "manage_by_non_root")) { |
| 843 |
ccs_manage_by_non_root = !is_delete; |
ccs_manage_by_non_root = !is_delete; |
| 844 |
return 0; |
return 0; |
| 847 |
} |
} |
| 848 |
|
|
| 849 |
/** |
/** |
| 850 |
* ccs_read_manager_policy - Read manager policy. |
* ccs_read_manager - Read manager policy. |
| 851 |
* |
* |
| 852 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 853 |
* |
* |
| 854 |
* Returns 0. |
* Returns nothing. |
| 855 |
* |
* |
| 856 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
| 857 |
*/ |
*/ |
| 858 |
static int ccs_read_manager_policy(struct ccs_io_buffer *head) |
static void ccs_read_manager(struct ccs_io_buffer *head) |
| 859 |
{ |
{ |
| 860 |
struct list_head *pos; |
if (head->r.eof) |
| 861 |
ccs_assert_read_lock(); |
return; |
| 862 |
if (head->read_eof) |
list_for_each_cookie(head->r.acl, &ccs_policy_list[CCS_ID_MANAGER]) { |
| 863 |
return 0; |
struct ccs_manager *ptr = |
| 864 |
list_for_each_cookie(pos, head->read_var2, &ccs_policy_manager_list) { |
list_entry(head->r.acl, typeof(*ptr), head.list); |
| 865 |
struct ccs_policy_manager_entry *ptr; |
if (ptr->head.is_deleted) |
|
ptr = list_entry(pos, struct ccs_policy_manager_entry, list); |
|
|
if (ptr->is_deleted) |
|
| 866 |
continue; |
continue; |
| 867 |
if (!ccs_io_printf(head, "%s\n", ptr->manager->name)) |
if (!ccs_flush(head)) |
| 868 |
return 0; |
return; |
| 869 |
|
ccs_set_string(head, ptr->manager->name); |
| 870 |
|
ccs_set_lf(head); |
| 871 |
} |
} |
| 872 |
head->read_eof = true; |
head->r.eof = true; |
|
return 0; |
|
| 873 |
} |
} |
| 874 |
|
|
| 875 |
/** |
/** |
| 876 |
* ccs_is_policy_manager - Check whether the current process is a policy manager. |
* ccs_manager - Check whether the current process is a policy manager. |
| 877 |
* |
* |
| 878 |
* Returns true if the current process is permitted to modify policy |
* Returns true if the current process is permitted to modify policy |
| 879 |
* via /proc/ccs/ interface. |
* via /proc/ccs/ interface. |
| 880 |
* |
* |
| 881 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
| 882 |
*/ |
*/ |
| 883 |
static bool ccs_is_policy_manager(void) |
static bool ccs_manager(void) |
| 884 |
{ |
{ |
| 885 |
struct ccs_policy_manager_entry *ptr; |
struct ccs_manager *ptr; |
| 886 |
const char *exe; |
const char *exe; |
| 887 |
struct task_struct *task = current; |
struct ccs_security *task = ccs_current_security(); |
| 888 |
const struct ccs_path_info *domainname |
const struct ccs_path_info *domainname |
| 889 |
= ccs_current_domain()->domainname; |
= ccs_current_domain()->domainname; |
| 890 |
bool found = false; |
bool found = false; |
|
ccs_assert_read_lock(); |
|
| 891 |
if (!ccs_policy_loaded) |
if (!ccs_policy_loaded) |
| 892 |
return true; |
return true; |
| 893 |
if (task->ccs_flags & CCS_TASK_IS_POLICY_MANAGER) |
if (task->ccs_flags & CCS_TASK_IS_MANAGER) |
| 894 |
return true; |
return true; |
| 895 |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
| 896 |
return false; |
return false; |
|
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
|
|
if (!ptr->is_deleted && ptr->is_domain |
|
|
&& !ccs_pathcmp(domainname, ptr->manager)) { |
|
|
/* Set manager flag. */ |
|
|
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
|
|
return true; |
|
|
} |
|
|
} |
|
| 897 |
exe = ccs_get_exe(); |
exe = ccs_get_exe(); |
| 898 |
if (!exe) |
list_for_each_entry_srcu(ptr, &ccs_policy_list[CCS_ID_MANAGER], |
| 899 |
return false; |
head.list, &ccs_ss) { |
| 900 |
list_for_each_entry_rcu(ptr, &ccs_policy_manager_list, list) { |
if (ptr->head.is_deleted) |
| 901 |
if (!ptr->is_deleted && !ptr->is_domain |
continue; |
| 902 |
&& !strcmp(exe, ptr->manager->name)) { |
if (ptr->is_domain) { |
| 903 |
found = true; |
if (ccs_pathcmp(domainname, ptr->manager)) |
| 904 |
/* Set manager flag. */ |
continue; |
| 905 |
task->ccs_flags |= CCS_TASK_IS_POLICY_MANAGER; |
} else { |
| 906 |
break; |
if (!exe || strcmp(exe, ptr->manager->name)) |
| 907 |
|
continue; |
| 908 |
} |
} |
| 909 |
|
/* Set manager flag. */ |
| 910 |
|
task->ccs_flags |= CCS_TASK_IS_MANAGER; |
| 911 |
|
found = true; |
| 912 |
|
break; |
| 913 |
} |
} |
| 914 |
if (!found) { /* Reduce error messages. */ |
if (!found) { /* Reduce error messages. */ |
| 915 |
static pid_t ccs_last_pid; |
static pid_t ccs_last_pid; |
| 925 |
} |
} |
| 926 |
|
|
| 927 |
/** |
/** |
| 928 |
* ccs_find_condition_part - Find condition part from the statement. |
* ccs_select_one - Parse select command. |
|
* |
|
|
* @data: String to parse. |
|
|
* |
|
|
* Returns pointer to the condition part if it was found in the statement, |
|
|
* NULL otherwise. |
|
|
*/ |
|
|
static char *ccs_find_condition_part(char *data) |
|
|
{ |
|
|
char *cp = strstr(data, " if "); |
|
|
if (cp) { |
|
|
while (1) { |
|
|
char *cp2 = strstr(cp + 3, " if "); |
|
|
if (!cp2) |
|
|
break; |
|
|
cp = cp2; |
|
|
} |
|
|
*cp++ = '\0'; |
|
|
} else { |
|
|
cp = strstr(data, " ; set "); |
|
|
if (cp) |
|
|
*cp++ = '\0'; |
|
|
} |
|
|
return cp; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_is_select_one - Parse select command. |
|
| 929 |
* |
* |
| 930 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 931 |
* @data: String to parse. |
* @data: String to parse. |
| 934 |
* |
* |
| 935 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
| 936 |
*/ |
*/ |
| 937 |
static bool ccs_is_select_one(struct ccs_io_buffer *head, const char *data) |
static bool ccs_select_one(struct ccs_io_buffer *head, const char *data) |
| 938 |
{ |
{ |
| 939 |
unsigned int pid; |
unsigned int pid; |
| 940 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
| 941 |
ccs_assert_read_lock(); |
bool global_pid = false; |
| 942 |
if (!strcmp(data, "allow_execute")) { |
if (!strcmp(data, "transition_only")) { |
| 943 |
head->read_execute_only = true; |
head->r.print_transition_related_only = true; |
| 944 |
return true; |
return true; |
| 945 |
} |
} |
| 946 |
if (sscanf(data, "pid=%u", &pid) == 1) { |
if (sscanf(data, "pid=%u", &pid) == 1 || |
| 947 |
|
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
| 948 |
struct task_struct *p; |
struct task_struct *p; |
| 949 |
read_lock(&tasklist_lock); |
ccs_tasklist_lock(); |
| 950 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
| 951 |
|
if (global_pid) |
| 952 |
|
p = ccsecurity_exports.find_task_by_pid_ns(pid, |
| 953 |
|
&init_pid_ns); |
| 954 |
|
else |
| 955 |
|
p = ccsecurity_exports.find_task_by_vpid(pid); |
| 956 |
|
#else |
| 957 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
| 958 |
|
#endif |
| 959 |
if (p) |
if (p) |
| 960 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
| 961 |
read_unlock(&tasklist_lock); |
ccs_tasklist_unlock(); |
| 962 |
} else if (!strncmp(data, "domain=", 7)) { |
} else if (!strncmp(data, "domain=", 7)) { |
| 963 |
if (ccs_is_domain_def(data + 7)) |
if (ccs_domain_def(data + 7)) |
| 964 |
domain = ccs_find_domain(data + 7); |
domain = ccs_find_domain(data + 7); |
| 965 |
} else |
} else |
| 966 |
return false; |
return false; |
| 967 |
head->write_var1 = domain; |
head->w.domain = domain; |
| 968 |
/* Accessing read_buf is safe because head->io_sem is held. */ |
/* Accessing read_buf is safe because head->io_sem is held. */ |
| 969 |
if (!head->read_buf) |
if (!head->read_buf) |
| 970 |
return true; /* Do nothing if open(O_WRONLY). */ |
return true; /* Do nothing if open(O_WRONLY). */ |
| 971 |
head->read_avail = 0; |
memset(&head->r, 0, sizeof(head->r)); |
| 972 |
|
head->r.print_this_domain_only = true; |
| 973 |
|
if (domain) |
| 974 |
|
head->r.domain = &domain->list; |
| 975 |
|
else |
| 976 |
|
head->r.eof = true; |
| 977 |
ccs_io_printf(head, "# select %s\n", data); |
ccs_io_printf(head, "# select %s\n", data); |
| 978 |
head->read_single_domain = true; |
if (domain && domain->is_deleted) |
| 979 |
head->read_eof = !domain; |
ccs_set_string(head, "# This is a deleted domain.\n"); |
|
if (domain) { |
|
|
struct ccs_domain_info *d; |
|
|
head->read_var1 = NULL; |
|
|
list_for_each_entry_rcu(d, &ccs_domain_list, list) { |
|
|
if (d == domain) |
|
|
break; |
|
|
head->read_var1 = &d->list; |
|
|
} |
|
|
head->read_var2 = NULL; |
|
|
head->read_bit = 0; |
|
|
head->read_step = 0; |
|
|
if (domain->is_deleted) |
|
|
ccs_io_printf(head, "# This is a deleted domain.\n"); |
|
|
} |
|
| 980 |
return true; |
return true; |
| 981 |
} |
} |
| 982 |
|
|
|
static int ccs_write_domain_policy2(char *data, struct ccs_domain_info *domain, |
|
|
struct ccs_condition *cond, |
|
|
const bool is_delete) |
|
|
{ |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_CAPABILITY)) |
|
|
return ccs_write_capability_policy(data, domain, cond, |
|
|
is_delete); |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_NETWORK)) |
|
|
return ccs_write_network_policy(data, domain, cond, is_delete); |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_SIGNAL)) |
|
|
return ccs_write_signal_policy(data, domain, cond, is_delete); |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_ENV)) |
|
|
return ccs_write_env_policy(data, domain, cond, is_delete); |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_MOUNT)) |
|
|
return ccs_write_mount_policy(data, domain, cond, is_delete); |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_UNMOUNT)) |
|
|
return ccs_write_umount_policy(data, domain, cond, is_delete); |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_CHROOT)) |
|
|
return ccs_write_chroot_policy(data, domain, cond, is_delete); |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_PIVOT_ROOT)) |
|
|
return ccs_write_pivot_root_policy(data, domain, cond, |
|
|
is_delete); |
|
|
return ccs_write_file_policy(data, domain, cond, is_delete); |
|
|
} |
|
|
|
|
| 983 |
/** |
/** |
| 984 |
* ccs_write_domain_policy - Write domain policy. |
* ccs_same_handler_acl - Check for duplicated "struct ccs_handler_acl" entry. |
| 985 |
* |
* |
| 986 |
* @head: Pointer to "struct ccs_io_buffer". |
* @a: Pointer to "struct ccs_acl_info". |
| 987 |
|
* @b: Pointer to "struct ccs_acl_info". |
| 988 |
* |
* |
| 989 |
* Returns 0 on success, negative value otherwise. |
* Returns true if @a == @b, false otherwise. |
| 990 |
*/ |
*/ |
| 991 |
static int ccs_write_domain_policy(struct ccs_io_buffer *head) |
static bool ccs_same_handler_acl(const struct ccs_acl_info *a, |
| 992 |
|
const struct ccs_acl_info *b) |
| 993 |
{ |
{ |
| 994 |
char *data = head->write_buf; |
const struct ccs_handler_acl *p1 = container_of(a, typeof(*p1), head); |
| 995 |
struct ccs_domain_info *domain = head->write_var1; |
const struct ccs_handler_acl *p2 = container_of(b, typeof(*p2), head); |
| 996 |
bool is_delete = false; |
return p1->handler == p2->handler; |
|
bool is_select = false; |
|
|
unsigned int profile; |
|
|
struct ccs_condition *cond = NULL; |
|
|
char *cp; |
|
|
int error; |
|
|
if (ccs_str_starts(&data, CCS_KEYWORD_DELETE)) |
|
|
is_delete = true; |
|
|
else if (ccs_str_starts(&data, CCS_KEYWORD_SELECT)) |
|
|
is_select = true; |
|
|
if (is_select && ccs_is_select_one(head, data)) |
|
|
return 0; |
|
|
/* Don't allow updating policies by non manager programs. */ |
|
|
if (!ccs_is_policy_manager()) |
|
|
return -EPERM; |
|
|
if (ccs_is_domain_def(data)) { |
|
|
domain = NULL; |
|
|
if (is_delete) |
|
|
ccs_delete_domain(data); |
|
|
else if (is_select) |
|
|
domain = ccs_find_domain(data); |
|
|
else |
|
|
domain = ccs_find_or_assign_new_domain(data, 0); |
|
|
head->write_var1 = domain; |
|
|
return 0; |
|
|
} |
|
|
if (!domain) |
|
|
return -EINVAL; |
|
|
|
|
|
if (sscanf(data, CCS_KEYWORD_USE_PROFILE "%u", &profile) == 1 |
|
|
&& profile < CCS_MAX_PROFILES) { |
|
|
if (ccs_profile_ptr[profile] || !ccs_policy_loaded) |
|
|
domain->profile = (u8) profile; |
|
|
return 0; |
|
|
} |
|
|
if (!strcmp(data, CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_READ)) { |
|
|
domain->ignore_global_allow_read = !is_delete; |
|
|
return 0; |
|
|
} |
|
|
if (!strcmp(data, CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_ENV)) { |
|
|
domain->ignore_global_allow_env = !is_delete; |
|
|
return 0; |
|
|
} |
|
|
cp = ccs_find_condition_part(data); |
|
|
if (cp) { |
|
|
cond = ccs_get_condition(cp); |
|
|
if (!cond) |
|
|
return -EINVAL; |
|
|
} |
|
|
error = ccs_write_domain_policy2(data, domain, cond, is_delete); |
|
|
if (cond) |
|
|
ccs_put_condition(cond); |
|
|
return error; |
|
|
} |
|
|
|
|
|
static bool ccs_print_name_union(struct ccs_io_buffer *head, |
|
|
const struct ccs_name_union *ptr) |
|
|
{ |
|
|
int pos = head->read_avail; |
|
|
if (pos && head->read_buf[pos - 1] == ' ') |
|
|
head->read_avail--; |
|
|
if (ptr->is_group) |
|
|
return ccs_io_printf(head, " @%s", |
|
|
ptr->group->group_name->name); |
|
|
return ccs_io_printf(head, " %s", ptr->filename->name); |
|
|
} |
|
|
|
|
|
static bool ccs_print_name_union_quoted(struct ccs_io_buffer *head, |
|
|
const struct ccs_name_union *ptr) |
|
|
{ |
|
|
if (ptr->is_group) |
|
|
return ccs_io_printf(head, "@%s", |
|
|
ptr->group->group_name->name); |
|
|
return ccs_io_printf(head, "\"%s\"", ptr->filename->name); |
|
|
} |
|
|
|
|
|
static bool ccs_print_number_union_common(struct ccs_io_buffer *head, |
|
|
const struct ccs_number_union *ptr, |
|
|
const bool need_space) |
|
|
{ |
|
|
unsigned long min; |
|
|
unsigned long max; |
|
|
u8 min_type; |
|
|
u8 max_type; |
|
|
if (need_space && !ccs_io_printf(head, " ")) |
|
|
return false; |
|
|
if (ptr->is_group) |
|
|
return ccs_io_printf(head, "@%s", |
|
|
ptr->group->group_name->name); |
|
|
min_type = ptr->min_type; |
|
|
max_type = ptr->max_type; |
|
|
min = ptr->values[0]; |
|
|
max = ptr->values[1]; |
|
|
switch (min_type) { |
|
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
|
|
if (!ccs_io_printf(head, "0x%lX", min)) |
|
|
return false; |
|
|
break; |
|
|
case CCS_VALUE_TYPE_OCTAL: |
|
|
if (!ccs_io_printf(head, "0%lo", min)) |
|
|
return false; |
|
|
break; |
|
|
default: |
|
|
if (!ccs_io_printf(head, "%lu", min)) |
|
|
return false; |
|
|
break; |
|
|
} |
|
|
if (min == max && min_type == max_type) |
|
|
return true; |
|
|
switch (max_type) { |
|
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
|
|
return ccs_io_printf(head, "-0x%lX", max); |
|
|
case CCS_VALUE_TYPE_OCTAL: |
|
|
return ccs_io_printf(head, "-0%lo", max); |
|
|
default: |
|
|
return ccs_io_printf(head, "-%lu", max); |
|
|
} |
|
|
} |
|
|
|
|
|
bool ccs_print_number_union(struct ccs_io_buffer *head, |
|
|
const struct ccs_number_union *ptr) |
|
|
{ |
|
|
return ccs_print_number_union_common(head, ptr, true); |
|
|
} |
|
|
|
|
|
static bool ccs_print_number_union_nospace(struct ccs_io_buffer *head, |
|
|
const struct ccs_number_union *ptr) |
|
|
{ |
|
|
return ccs_print_number_union_common(head, ptr, false); |
|
| 997 |
} |
} |
| 998 |
|
|
| 999 |
/** |
/** |
| 1000 |
* ccs_print_condition - Print condition part. |
* ccs_same_task_acl - Check for duplicated "struct ccs_task_acl" entry. |
| 1001 |
* |
* |
| 1002 |
* @head: Pointer to "struct ccs_io_buffer". |
* @a: Pointer to "struct ccs_acl_info". |
| 1003 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @b: Pointer to "struct ccs_acl_info". |
| 1004 |
* |
* |
| 1005 |
* Returns true on success, false otherwise. |
* Returns true if @a == @b, false otherwise. |
| 1006 |
*/ |
*/ |
| 1007 |
static bool ccs_print_condition(struct ccs_io_buffer *head, |
static bool ccs_same_task_acl(const struct ccs_acl_info *a, |
| 1008 |
const struct ccs_condition *cond) |
const struct ccs_acl_info *b) |
| 1009 |
{ |
{ |
| 1010 |
const struct ccs_condition_element *condp; |
const struct ccs_task_acl *p1 = container_of(a, typeof(*p1), head); |
| 1011 |
const struct ccs_number_union *numbers_p; |
const struct ccs_task_acl *p2 = container_of(b, typeof(*p2), head); |
| 1012 |
const struct ccs_name_union *names_p; |
return p1->domainname == p2->domainname; |
|
const struct ccs_argv_entry *argv; |
|
|
const struct ccs_envp_entry *envp; |
|
|
u16 condc; |
|
|
u16 i; |
|
|
u16 j; |
|
|
char buffer[32]; |
|
|
if (!cond) |
|
|
goto no_condition; |
|
|
condc = cond->condc; |
|
|
condp = (const struct ccs_condition_element *) (cond + 1); |
|
|
numbers_p = (const struct ccs_number_union *) (condp + condc); |
|
|
names_p = (const struct ccs_name_union *) |
|
|
(numbers_p + cond->numbers_count); |
|
|
argv = (const struct ccs_argv_entry *) (names_p + cond->names_count); |
|
|
envp = (const struct ccs_envp_entry *) (argv + cond->argc); |
|
|
memset(buffer, 0, sizeof(buffer)); |
|
|
if (condc && !ccs_io_printf(head, "%s", " if")) |
|
|
goto out; |
|
|
for (i = 0; i < condc; i++) { |
|
|
const u8 match = condp->equals; |
|
|
const u8 left = condp->left; |
|
|
const u8 right = condp->right; |
|
|
condp++; |
|
|
switch (left) { |
|
|
case CCS_ARGV_ENTRY: |
|
|
if (!ccs_io_printf(head, " exec.argv[%u]%s\"%s\"", |
|
|
argv->index, argv->is_not ? |
|
|
"!=" : "=", argv->value->name)) |
|
|
goto out; |
|
|
argv++; |
|
|
continue; |
|
|
case CCS_ENVP_ENTRY: |
|
|
if (!ccs_io_printf(head, " exec.envp[\"%s\"]%s", |
|
|
envp->name->name, envp->is_not ? |
|
|
"!=" : "=")) |
|
|
goto out; |
|
|
if (envp->value) { |
|
|
if (!ccs_io_printf(head, "\"%s\"", |
|
|
envp->value->name)) |
|
|
goto out; |
|
|
} else { |
|
|
if (!ccs_io_printf(head, "NULL")) |
|
|
goto out; |
|
|
} |
|
|
envp++; |
|
|
continue; |
|
|
case CCS_NUMBER_UNION: |
|
|
if (!ccs_print_number_union(head, numbers_p++)) |
|
|
goto out; |
|
|
break; |
|
|
default: |
|
|
if (left >= CCS_MAX_CONDITION_KEYWORD) |
|
|
goto out; |
|
|
if (!ccs_io_printf(head, " %s", |
|
|
ccs_condition_keyword[left])) |
|
|
goto out; |
|
|
break; |
|
|
} |
|
|
if (!ccs_io_printf(head, "%s", match ? "=" : "!=")) |
|
|
goto out; |
|
|
switch (right) { |
|
|
case CCS_NAME_UNION: |
|
|
if (!ccs_print_name_union_quoted(head, names_p++)) |
|
|
goto out; |
|
|
break; |
|
|
case CCS_NUMBER_UNION: |
|
|
if (!ccs_print_number_union_nospace(head, numbers_p++)) |
|
|
goto out; |
|
|
break; |
|
|
default: |
|
|
if (right >= CCS_MAX_CONDITION_KEYWORD) |
|
|
goto out; |
|
|
if (!ccs_io_printf(head, "%s", |
|
|
ccs_condition_keyword[right])) |
|
|
goto out; |
|
|
break; |
|
|
} |
|
|
} |
|
|
i = cond->post_state[3]; |
|
|
if (!i) |
|
|
goto no_condition; |
|
|
if (!ccs_io_printf(head, " ; set")) |
|
|
goto out; |
|
|
for (j = 0; j < 3; j++) { |
|
|
if (!(i & (1 << j))) |
|
|
continue; |
|
|
if (!ccs_io_printf(head, " task.state[%u]=%u", j, |
|
|
cond->post_state[j])) |
|
|
goto out; |
|
|
} |
|
|
no_condition: |
|
|
if (ccs_io_printf(head, "\n")) |
|
|
return true; |
|
|
out: |
|
|
return false; |
|
| 1013 |
} |
} |
| 1014 |
|
|
| 1015 |
/** |
/** |
| 1016 |
* ccs_print_path_acl - Print a single path ACL entry. |
* ccs_write_task - Update task related list. |
| 1017 |
* |
* |
| 1018 |
* @head: Pointer to "struct ccs_io_buffer". |
* @param: Pointer to "struct ccs_acl_param". |
|
* @ptr: Pointer to "struct ccs_path_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
| 1019 |
* |
* |
| 1020 |
* Returns true on success, false otherwise. |
* Returns 0 on success, negative value otherwise. |
| 1021 |
|
* |
| 1022 |
|
* Caller holds ccs_read_lock(). |
| 1023 |
*/ |
*/ |
| 1024 |
static bool ccs_print_path_acl(struct ccs_io_buffer *head, |
static int ccs_write_task(struct ccs_acl_param *param) |
|
struct ccs_path_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
| 1025 |
{ |
{ |
| 1026 |
int pos; |
int error; |
| 1027 |
u8 bit; |
const bool is_auto = ccs_str_starts(¶m->data, |
| 1028 |
const u16 perm = ptr->perm; |
"auto_domain_transition "); |
| 1029 |
for (bit = head->read_bit; bit < CCS_MAX_PATH_OPERATION; bit++) { |
if (!is_auto && !ccs_str_starts(¶m->data, |
| 1030 |
if (!(perm & (1 << bit))) |
"manual_domain_transition ")) { |
| 1031 |
continue; |
struct ccs_handler_acl e = { }; |
| 1032 |
if (head->read_execute_only && bit != CCS_TYPE_EXECUTE) |
char *handler; |
| 1033 |
continue; |
if (ccs_str_starts(¶m->data, "auto_execute_handler ")) |
| 1034 |
/* Print "read/write" instead of "read" and "write". */ |
e.head.type = CCS_TYPE_AUTO_EXECUTE_HANDLER; |
| 1035 |
if ((bit == CCS_TYPE_READ || bit == CCS_TYPE_WRITE) |
else if (ccs_str_starts(¶m->data, |
| 1036 |
&& (perm & (1 << CCS_TYPE_READ_WRITE))) |
"denied_execute_handler ")) |
| 1037 |
continue; |
e.head.type = CCS_TYPE_DENIED_EXECUTE_HANDLER; |
| 1038 |
pos = head->read_avail; |
else |
| 1039 |
if (!ccs_io_printf(head, "allow_%s", ccs_path2keyword(bit)) || |
return -EINVAL; |
| 1040 |
!ccs_print_name_union(head, &ptr->name) || |
handler = ccs_read_token(param); |
| 1041 |
!ccs_print_condition(head, cond)) { |
if (!ccs_correct_path(handler)) |
| 1042 |
head->read_bit = bit; |
return -EINVAL; |
| 1043 |
head->read_avail = pos; |
e.handler = ccs_get_name(handler); |
| 1044 |
return false; |
if (!e.handler) |
| 1045 |
} |
return -ENOMEM; |
| 1046 |
|
if (e.handler->is_patterned) |
| 1047 |
|
error = -EINVAL; /* No patterns allowed. */ |
| 1048 |
|
else |
| 1049 |
|
error = ccs_update_domain(&e.head, sizeof(e), param, |
| 1050 |
|
ccs_same_handler_acl, NULL); |
| 1051 |
|
ccs_put_name(e.handler); |
| 1052 |
|
} else { |
| 1053 |
|
struct ccs_task_acl e = { |
| 1054 |
|
.head.type = is_auto ? |
| 1055 |
|
CCS_TYPE_AUTO_TASK_ACL : CCS_TYPE_MANUAL_TASK_ACL, |
| 1056 |
|
.domainname = ccs_get_domainname(param), |
| 1057 |
|
}; |
| 1058 |
|
if (!e.domainname) |
| 1059 |
|
error = -EINVAL; |
| 1060 |
|
else |
| 1061 |
|
error = ccs_update_domain(&e.head, sizeof(e), param, |
| 1062 |
|
ccs_same_task_acl, NULL); |
| 1063 |
|
ccs_put_name(e.domainname); |
| 1064 |
} |
} |
| 1065 |
head->read_bit = 0; |
return error; |
|
return true; |
|
| 1066 |
} |
} |
| 1067 |
|
|
| 1068 |
/** |
/** |
| 1069 |
* ccs_print_path_number3_acl - Print a path_number3 ACL entry. |
* ccs_write_domain2 - Write domain policy. |
| 1070 |
* |
* |
| 1071 |
* @head: Pointer to "struct ccs_io_buffer". |
* @data: Policy to be interpreted. |
| 1072 |
* @ptr: Pointer to "struct ccs_path_number3_acl". |
* @domain: Pointer to "struct ccs_domain_info". |
| 1073 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @is_delete: True if it is a delete request. |
| 1074 |
* |
* |
| 1075 |
* Returns true on success, false otherwise. |
* Returns 0 on success, negative value otherwise. |
| 1076 |
|
* |
| 1077 |
|
* Caller holds ccs_read_lock(). |
| 1078 |
*/ |
*/ |
| 1079 |
static bool ccs_print_path_number3_acl(struct ccs_io_buffer *head, |
static int ccs_write_domain2(char *data, struct ccs_domain_info *domain, |
| 1080 |
struct ccs_path_number3_acl *ptr, |
const bool is_delete) |
|
const struct ccs_condition *cond) |
|
| 1081 |
{ |
{ |
| 1082 |
int pos; |
struct ccs_acl_param param = { |
| 1083 |
u8 bit; |
.data = data, |
| 1084 |
const u16 perm = ptr->perm; |
.domain = domain, |
| 1085 |
for (bit = head->read_bit; bit < CCS_MAX_PATH_NUMBER3_OPERATION; |
.is_delete = is_delete, |
| 1086 |
bit++) { |
}; |
| 1087 |
if (!(perm & (1 << bit))) |
static const struct { |
| 1088 |
|
const char *keyword; |
| 1089 |
|
int (*write) (struct ccs_acl_param *); |
| 1090 |
|
} ccs_callback[7] = { |
| 1091 |
|
{ "file ", ccs_write_file }, |
| 1092 |
|
{ "network inet ", ccs_write_inet_network }, |
| 1093 |
|
{ "network unix ", ccs_write_unix_network }, |
| 1094 |
|
{ "misc ", ccs_write_misc }, |
| 1095 |
|
{ "capability ", ccs_write_capability }, |
| 1096 |
|
{ "ipc ", ccs_write_ipc }, |
| 1097 |
|
{ "task ", ccs_write_task }, |
| 1098 |
|
}; |
| 1099 |
|
u8 i; |
| 1100 |
|
for (i = 0; i < 7; i++) { |
| 1101 |
|
if (!ccs_str_starts(¶m.data, ccs_callback[i].keyword)) |
| 1102 |
continue; |
continue; |
| 1103 |
pos = head->read_avail; |
return ccs_callback[i].write(¶m); |
|
if (!ccs_io_printf(head, "allow_%s", |
|
|
ccs_path_number32keyword(bit)) || |
|
|
!ccs_print_name_union(head, &ptr->name) || |
|
|
!ccs_print_number_union(head, &ptr->mode) || |
|
|
!ccs_print_number_union(head, &ptr->major) || |
|
|
!ccs_print_number_union(head, &ptr->minor) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
| 1104 |
} |
} |
| 1105 |
head->read_bit = 0; |
return -EINVAL; |
|
return true; |
|
| 1106 |
} |
} |
| 1107 |
|
|
| 1108 |
/** |
/** |
| 1109 |
* ccs_print_path2_acl - Print a double path ACL entry. |
* ccs_delete_domain - Delete a domain. |
| 1110 |
* |
* |
| 1111 |
* @head: Pointer to "struct ccs_io_buffer". |
* @domainname: The name of domain. |
|
* @ptr: Pointer to "struct ccs_path2_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
| 1112 |
* |
* |
| 1113 |
* Returns true on success, false otherwise. |
* Returns 0. |
| 1114 |
*/ |
*/ |
| 1115 |
static bool ccs_print_path2_acl(struct ccs_io_buffer *head, |
static int ccs_delete_domain(char *domainname) |
|
struct ccs_path2_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
| 1116 |
{ |
{ |
| 1117 |
int pos; |
struct ccs_domain_info *domain; |
| 1118 |
u8 bit; |
struct ccs_path_info name; |
| 1119 |
const u8 perm = ptr->perm; |
name.name = domainname; |
| 1120 |
for (bit = head->read_bit; bit < CCS_MAX_PATH2_OPERATION; bit++) { |
ccs_fill_path_info(&name); |
| 1121 |
if (!(perm & (1 << bit))) |
if (mutex_lock_interruptible(&ccs_policy_lock)) |
| 1122 |
|
return 0; |
| 1123 |
|
/* Is there an active domain? */ |
| 1124 |
|
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
| 1125 |
|
/* Never delete ccs_kernel_domain. */ |
| 1126 |
|
if (domain == &ccs_kernel_domain) |
| 1127 |
continue; |
continue; |
| 1128 |
pos = head->read_avail; |
if (domain->is_deleted || |
| 1129 |
if (!ccs_io_printf(head, "allow_%s", |
ccs_pathcmp(domain->domainname, &name)) |
| 1130 |
ccs_path22keyword(bit)) || |
continue; |
| 1131 |
!ccs_print_name_union(head, &ptr->name1) || |
domain->is_deleted = true; |
| 1132 |
!ccs_print_name_union(head, &ptr->name2) || |
break; |
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
| 1133 |
} |
} |
| 1134 |
head->read_bit = 0; |
mutex_unlock(&ccs_policy_lock); |
| 1135 |
return true; |
return 0; |
| 1136 |
} |
} |
| 1137 |
|
|
| 1138 |
|
/* String table for domain flags. */ |
| 1139 |
|
const char * const ccs_dif[CCS_MAX_DOMAIN_INFO_FLAGS] = { |
| 1140 |
|
[CCS_DIF_QUOTA_WARNED] = "quota_exceeded\n", |
| 1141 |
|
[CCS_DIF_TRANSITION_FAILED] = "transition_failed\n", |
| 1142 |
|
}; |
| 1143 |
|
|
| 1144 |
/** |
/** |
| 1145 |
* ccs_print_path_number_acl - Print an ioctl/chmod/chown/chgrp ACL entry. |
* ccs_write_domain - Write domain policy. |
| 1146 |
* |
* |
| 1147 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* @ptr: Pointer to "struct ccs_path_number_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
| 1148 |
* |
* |
| 1149 |
* Returns true on success, false otherwise. |
* Returns 0 on success, negative value otherwise. |
| 1150 |
|
* |
| 1151 |
|
* Caller holds ccs_read_lock(). |
| 1152 |
*/ |
*/ |
| 1153 |
static bool ccs_print_path_number_acl(struct ccs_io_buffer *head, |
static int ccs_write_domain(struct ccs_io_buffer *head) |
|
struct ccs_path_number_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
| 1154 |
{ |
{ |
| 1155 |
int pos; |
char *data = head->write_buf; |
| 1156 |
u8 bit; |
struct ccs_domain_info *domain = head->w.domain; |
| 1157 |
const u8 perm = ptr->perm; |
bool is_delete = false; |
| 1158 |
for (bit = head->read_bit; bit < CCS_MAX_PATH_NUMBER_OPERATION; |
bool is_select = false; |
| 1159 |
bit++) { |
unsigned int profile; |
| 1160 |
if (!(perm & (1 << bit))) |
if (ccs_str_starts(&data, "delete ")) |
| 1161 |
|
is_delete = true; |
| 1162 |
|
else if (ccs_str_starts(&data, "select ")) |
| 1163 |
|
is_select = true; |
| 1164 |
|
if (is_select && ccs_select_one(head, data)) |
| 1165 |
|
return -EAGAIN; |
| 1166 |
|
/* Don't allow updating policies by non manager programs. */ |
| 1167 |
|
if (!ccs_manager()) |
| 1168 |
|
return -EPERM; |
| 1169 |
|
if (ccs_domain_def(data)) { |
| 1170 |
|
domain = NULL; |
| 1171 |
|
if (is_delete) |
| 1172 |
|
ccs_delete_domain(data); |
| 1173 |
|
else if (is_select) |
| 1174 |
|
domain = ccs_find_domain(data); |
| 1175 |
|
else |
| 1176 |
|
domain = ccs_assign_domain(data, 0, 0, false); |
| 1177 |
|
head->w.domain = domain; |
| 1178 |
|
return 0; |
| 1179 |
|
} |
| 1180 |
|
if (!domain) |
| 1181 |
|
return -EINVAL; |
| 1182 |
|
|
| 1183 |
|
if (sscanf(data, "use_profile %u\n", &profile) == 1 |
| 1184 |
|
&& profile < CCS_MAX_PROFILES) { |
| 1185 |
|
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
| 1186 |
|
if (!is_delete) |
| 1187 |
|
domain->profile = (u8) profile; |
| 1188 |
|
return 0; |
| 1189 |
|
} |
| 1190 |
|
if (sscanf(data, "use_group %u\n", &profile) == 1 |
| 1191 |
|
&& profile < CCS_MAX_ACL_GROUPS) { |
| 1192 |
|
if (!is_delete) |
| 1193 |
|
domain->group = (u8) profile; |
| 1194 |
|
return 0; |
| 1195 |
|
} |
| 1196 |
|
for (profile = 0; profile < CCS_MAX_DOMAIN_INFO_FLAGS; profile++) { |
| 1197 |
|
const char *cp = ccs_dif[profile]; |
| 1198 |
|
if (strncmp(data, cp, strlen(cp) - 1)) |
| 1199 |
continue; |
continue; |
| 1200 |
pos = head->read_avail; |
domain->flags[profile] = !is_delete; |
| 1201 |
if (!ccs_io_printf(head, "allow_%s", |
return 0; |
|
ccs_path_number2keyword(bit)) || |
|
|
!ccs_print_name_union(head, &ptr->name) || |
|
|
!ccs_print_number_union(head, &ptr->number) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_bit = bit; |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
| 1202 |
} |
} |
| 1203 |
head->read_bit = 0; |
return ccs_write_domain2(data, domain, is_delete); |
|
return true; |
|
| 1204 |
} |
} |
| 1205 |
|
|
| 1206 |
/** |
/** |
| 1207 |
* ccs_print_env_acl - Print an evironment variable name's ACL entry. |
* ccs_print_name_union - Print a ccs_name_union. |
| 1208 |
* |
* |
| 1209 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1210 |
* @ptr: Pointer to "struct ccs_env_acl". |
* @ptr: Pointer to "struct ccs_name_union". |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
| 1211 |
* |
* |
| 1212 |
* Returns true on success, false otherwise. |
* Returns nothing. |
| 1213 |
*/ |
*/ |
| 1214 |
static bool ccs_print_env_acl(struct ccs_io_buffer *head, |
static void ccs_print_name_union(struct ccs_io_buffer *head, |
| 1215 |
struct ccs_env_acl *ptr, |
const struct ccs_name_union *ptr) |
| 1216 |
const struct ccs_condition *cond) |
{ |
| 1217 |
{ |
const bool cond = head->r.print_cond_part; |
| 1218 |
const int pos = head->read_avail; |
if (!cond) |
| 1219 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_ENV "%s", ptr->env->name) || |
ccs_set_space(head); |
| 1220 |
!ccs_print_condition(head, cond)) { |
if (ptr->is_group) { |
| 1221 |
head->read_avail = pos; |
ccs_set_string(head, "@"); |
| 1222 |
return false; |
ccs_set_string(head, ptr->group->group_name->name); |
| 1223 |
|
} else { |
| 1224 |
|
if (cond) |
| 1225 |
|
ccs_set_string(head, "\""); |
| 1226 |
|
ccs_set_string(head, ptr->filename->name); |
| 1227 |
|
if (cond) |
| 1228 |
|
ccs_set_string(head, "\""); |
| 1229 |
} |
} |
|
return true; |
|
| 1230 |
} |
} |
| 1231 |
|
|
| 1232 |
/** |
/** |
| 1233 |
* ccs_print_capability_acl - Print a capability ACL entry. |
* ccs_print_number_union - Print a ccs_number_union. |
| 1234 |
* |
* |
| 1235 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1236 |
* @ptr: Pointer to "struct ccs_capability_acl". |
* @ptr: Pointer to "struct ccs_number_union". |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
| 1237 |
* |
* |
| 1238 |
* Returns true on success, false otherwise. |
* Returns nothing. |
| 1239 |
*/ |
*/ |
| 1240 |
static bool ccs_print_capability_acl(struct ccs_io_buffer *head, |
static void ccs_print_number_union(struct ccs_io_buffer *head, |
| 1241 |
struct ccs_capability_acl *ptr, |
const struct ccs_number_union *ptr) |
| 1242 |
const struct ccs_condition *cond) |
{ |
| 1243 |
{ |
if (!head->r.print_cond_part) |
| 1244 |
const int pos = head->read_avail; |
ccs_set_space(head); |
| 1245 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_CAPABILITY "%s", |
if (ptr->is_group) { |
| 1246 |
ccs_cap2keyword(ptr->operation)) || |
ccs_set_string(head, "@"); |
| 1247 |
!ccs_print_condition(head, cond)) { |
ccs_set_string(head, ptr->group->group_name->name); |
| 1248 |
head->read_avail = pos; |
} else { |
| 1249 |
return false; |
int i; |
| 1250 |
|
unsigned long min = ptr->values[0]; |
| 1251 |
|
const unsigned long max = ptr->values[1]; |
| 1252 |
|
u8 min_type = ptr->value_type[0]; |
| 1253 |
|
const u8 max_type = ptr->value_type[1]; |
| 1254 |
|
char buffer[128]; |
| 1255 |
|
buffer[0] = '\0'; |
| 1256 |
|
for (i = 0; i < 2; i++) { |
| 1257 |
|
switch (min_type) { |
| 1258 |
|
case CCS_VALUE_TYPE_HEXADECIMAL: |
| 1259 |
|
ccs_addprintf(buffer, sizeof(buffer), "0x%lX", |
| 1260 |
|
min); |
| 1261 |
|
break; |
| 1262 |
|
case CCS_VALUE_TYPE_OCTAL: |
| 1263 |
|
ccs_addprintf(buffer, sizeof(buffer), "0%lo", |
| 1264 |
|
min); |
| 1265 |
|
break; |
| 1266 |
|
default: |
| 1267 |
|
ccs_addprintf(buffer, sizeof(buffer), "%lu", |
| 1268 |
|
min); |
| 1269 |
|
break; |
| 1270 |
|
} |
| 1271 |
|
if (min == max && min_type == max_type) |
| 1272 |
|
break; |
| 1273 |
|
ccs_addprintf(buffer, sizeof(buffer), "-"); |
| 1274 |
|
min_type = max_type; |
| 1275 |
|
min = max; |
| 1276 |
|
} |
| 1277 |
|
ccs_io_printf(head, "%s", buffer); |
| 1278 |
} |
} |
|
return true; |
|
| 1279 |
} |
} |
| 1280 |
|
|
| 1281 |
/** |
/** |
| 1282 |
* ccs_print_ipv4_entry - Print IPv4 address of a network ACL entry. |
* ccs_print_condition - Print condition part. |
| 1283 |
* |
* |
| 1284 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1285 |
* @ptr: Pointer to "struct ccs_ip_network_acl". |
* @cond: Pointer to "struct ccs_condition". |
| 1286 |
* |
* |
| 1287 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
| 1288 |
*/ |
*/ |
| 1289 |
static bool ccs_print_ipv4_entry(struct ccs_io_buffer *head, |
static bool ccs_print_condition(struct ccs_io_buffer *head, |
| 1290 |
struct ccs_ip_network_acl *ptr) |
const struct ccs_condition *cond) |
| 1291 |
{ |
{ |
| 1292 |
const u32 min_address = ptr->address.ipv4.min; |
switch (head->r.cond_step) { |
| 1293 |
const u32 max_address = ptr->address.ipv4.max; |
case 0: |
| 1294 |
if (!ccs_io_printf(head, "%u.%u.%u.%u", HIPQUAD(min_address))) |
head->r.cond_index = 0; |
| 1295 |
return false; |
head->r.cond_step++; |
| 1296 |
if (min_address != max_address |
/* fall through */ |
| 1297 |
&& !ccs_io_printf(head, "-%u.%u.%u.%u", HIPQUAD(max_address))) |
case 1: |
| 1298 |
return false; |
{ |
| 1299 |
return true; |
const u16 condc = cond->condc; |
| 1300 |
|
const struct ccs_condition_element *condp = |
| 1301 |
|
(typeof(condp)) (cond + 1); |
| 1302 |
|
const struct ccs_number_union *numbers_p = |
| 1303 |
|
(typeof(numbers_p)) (condp + condc); |
| 1304 |
|
const struct ccs_name_union *names_p = |
| 1305 |
|
(typeof(names_p)) |
| 1306 |
|
(numbers_p + cond->numbers_count); |
| 1307 |
|
const struct ccs_argv *argv = |
| 1308 |
|
(typeof(argv)) (names_p + cond->names_count); |
| 1309 |
|
const struct ccs_envp *envp = |
| 1310 |
|
(typeof(envp)) (argv + cond->argc); |
| 1311 |
|
u16 skip; |
| 1312 |
|
for (skip = 0; skip < head->r.cond_index; skip++) { |
| 1313 |
|
const u8 left = condp->left; |
| 1314 |
|
const u8 right = condp->right; |
| 1315 |
|
condp++; |
| 1316 |
|
switch (left) { |
| 1317 |
|
case CCS_ARGV_ENTRY: |
| 1318 |
|
argv++; |
| 1319 |
|
continue; |
| 1320 |
|
case CCS_ENVP_ENTRY: |
| 1321 |
|
envp++; |
| 1322 |
|
continue; |
| 1323 |
|
case CCS_NUMBER_UNION: |
| 1324 |
|
numbers_p++; |
| 1325 |
|
break; |
| 1326 |
|
} |
| 1327 |
|
switch (right) { |
| 1328 |
|
case CCS_NAME_UNION: |
| 1329 |
|
names_p++; |
| 1330 |
|
break; |
| 1331 |
|
case CCS_NUMBER_UNION: |
| 1332 |
|
numbers_p++; |
| 1333 |
|
break; |
| 1334 |
|
} |
| 1335 |
|
} |
| 1336 |
|
while (head->r.cond_index < condc) { |
| 1337 |
|
const u8 match = condp->equals; |
| 1338 |
|
const u8 left = condp->left; |
| 1339 |
|
const u8 right = condp->right; |
| 1340 |
|
if (!ccs_flush(head)) |
| 1341 |
|
return false; |
| 1342 |
|
condp++; |
| 1343 |
|
head->r.cond_index++; |
| 1344 |
|
ccs_set_space(head); |
| 1345 |
|
switch (left) { |
| 1346 |
|
case CCS_ARGV_ENTRY: |
| 1347 |
|
ccs_io_printf(head, |
| 1348 |
|
"exec.argv[%u]%s\"%s\"", |
| 1349 |
|
argv->index, |
| 1350 |
|
argv->is_not ? |
| 1351 |
|
"!=" : "=", |
| 1352 |
|
argv->value->name); |
| 1353 |
|
argv++; |
| 1354 |
|
continue; |
| 1355 |
|
case CCS_ENVP_ENTRY: |
| 1356 |
|
ccs_io_printf(head, |
| 1357 |
|
"exec.envp[\"%s\"]%s", |
| 1358 |
|
envp->name->name, |
| 1359 |
|
envp->is_not ? |
| 1360 |
|
"!=" : "="); |
| 1361 |
|
if (envp->value) { |
| 1362 |
|
ccs_set_string(head, "\""); |
| 1363 |
|
ccs_set_string(head, envp-> |
| 1364 |
|
value->name); |
| 1365 |
|
ccs_set_string(head, "\""); |
| 1366 |
|
} else { |
| 1367 |
|
ccs_set_string(head, "NULL"); |
| 1368 |
|
} |
| 1369 |
|
envp++; |
| 1370 |
|
continue; |
| 1371 |
|
case CCS_NUMBER_UNION: |
| 1372 |
|
ccs_print_number_union(head, |
| 1373 |
|
numbers_p++); |
| 1374 |
|
break; |
| 1375 |
|
default: |
| 1376 |
|
ccs_set_string(head, |
| 1377 |
|
ccs_condition_keyword[left]); |
| 1378 |
|
break; |
| 1379 |
|
} |
| 1380 |
|
ccs_set_string(head, match ? "=" : "!="); |
| 1381 |
|
switch (right) { |
| 1382 |
|
case CCS_NAME_UNION: |
| 1383 |
|
ccs_print_name_union(head, names_p++); |
| 1384 |
|
break; |
| 1385 |
|
case CCS_NUMBER_UNION: |
| 1386 |
|
ccs_print_number_union(head, |
| 1387 |
|
numbers_p++); |
| 1388 |
|
break; |
| 1389 |
|
default: |
| 1390 |
|
ccs_set_string(head, |
| 1391 |
|
ccs_condition_keyword[right]); |
| 1392 |
|
break; |
| 1393 |
|
} |
| 1394 |
|
} |
| 1395 |
|
} |
| 1396 |
|
head->r.cond_step++; |
| 1397 |
|
/* fall through */ |
| 1398 |
|
case 2: |
| 1399 |
|
if (!ccs_flush(head)) |
| 1400 |
|
break; |
| 1401 |
|
head->r.cond_step++; |
| 1402 |
|
/* fall through */ |
| 1403 |
|
case 3: |
| 1404 |
|
if (cond->grant_log != CCS_GRANTLOG_AUTO) |
| 1405 |
|
ccs_io_printf(head, " grant_log=%s", |
| 1406 |
|
ccs_yesno(cond->grant_log == |
| 1407 |
|
CCS_GRANTLOG_YES)); |
| 1408 |
|
if (cond->transit) { |
| 1409 |
|
ccs_set_string(head, " auto_domain_transition=\""); |
| 1410 |
|
ccs_set_string(head, cond->transit->name); |
| 1411 |
|
ccs_set_string(head, "\""); |
| 1412 |
|
} |
| 1413 |
|
ccs_set_lf(head); |
| 1414 |
|
return true; |
| 1415 |
|
} |
| 1416 |
|
return false; |
| 1417 |
} |
} |
| 1418 |
|
|
| 1419 |
/** |
/** |
| 1420 |
* ccs_print_ipv6_entry - Print IPv6 address of a network ACL entry. |
* ccs_set_group - Print "acl_group " header keyword and category name. |
| 1421 |
* |
* |
| 1422 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1423 |
* @ptr: Pointer to "struct ccs_ip_network_acl". |
* @category: Category name. |
| 1424 |
* |
* |
| 1425 |
* Returns true on success, false otherwise. |
* Returns nothing. |
| 1426 |
*/ |
*/ |
| 1427 |
static bool ccs_print_ipv6_entry(struct ccs_io_buffer *head, |
static void ccs_set_group(struct ccs_io_buffer *head, const char *category) |
|
struct ccs_ip_network_acl *ptr) |
|
| 1428 |
{ |
{ |
| 1429 |
char buf[64]; |
if (head->type == CCS_EXCEPTIONPOLICY) |
| 1430 |
const struct in6_addr *min_address = ptr->address.ipv6.min; |
ccs_io_printf(head, "acl_group %u ", head->r.acl_group_index); |
| 1431 |
const struct in6_addr *max_address = ptr->address.ipv6.max; |
ccs_set_string(head, category); |
|
ccs_print_ipv6(buf, sizeof(buf), min_address); |
|
|
if (!ccs_io_printf(head, "%s", buf)) |
|
|
return false; |
|
|
if (min_address != max_address) { |
|
|
ccs_print_ipv6(buf, sizeof(buf), max_address); |
|
|
if (!ccs_io_printf(head, "-%s", buf)) |
|
|
return false; |
|
|
} |
|
|
return true; |
|
| 1432 |
} |
} |
| 1433 |
|
|
| 1434 |
/** |
/** |
| 1435 |
* ccs_print_network_acl - Print a network ACL entry. |
* ccs_print_entry - Print an ACL entry. |
| 1436 |
* |
* |
| 1437 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1438 |
* @ptr: Pointer to "struct ccs_ip_network_acl". |
* @acl: Pointer to an ACL entry. |
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
| 1439 |
* |
* |
| 1440 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
| 1441 |
*/ |
*/ |
| 1442 |
static bool ccs_print_network_acl(struct ccs_io_buffer *head, |
static bool ccs_print_entry(struct ccs_io_buffer *head, |
| 1443 |
struct ccs_ip_network_acl *ptr, |
const struct ccs_acl_info *acl) |
|
const struct ccs_condition *cond) |
|
| 1444 |
{ |
{ |
| 1445 |
int pos; |
const u8 acl_type = acl->type; |
| 1446 |
|
const bool may_trigger_transition = acl->cond && acl->cond->transit; |
| 1447 |
|
bool first = true; |
| 1448 |
u8 bit; |
u8 bit; |
| 1449 |
const u16 perm = ptr->perm; |
if (head->r.print_cond_part) |
| 1450 |
for (bit = head->read_bit; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
goto print_cond_part; |
| 1451 |
if (!(perm & (1 << bit))) |
if (acl->is_deleted) |
| 1452 |
continue; |
return true; |
| 1453 |
pos = head->read_avail; |
if (!ccs_flush(head)) |
| 1454 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_NETWORK "%s ", |
return false; |
| 1455 |
ccs_net2keyword(bit))) |
else if (acl_type == CCS_TYPE_PATH_ACL) { |
| 1456 |
goto out; |
struct ccs_path_acl *ptr |
| 1457 |
|
= container_of(acl, typeof(*ptr), head); |
| 1458 |
|
const u16 perm = ptr->perm; |
| 1459 |
|
for (bit = 0; bit < CCS_MAX_PATH_OPERATION; bit++) { |
| 1460 |
|
if (!(perm & (1 << bit))) |
| 1461 |
|
continue; |
| 1462 |
|
if (head->r.print_transition_related_only && |
| 1463 |
|
bit != CCS_TYPE_EXECUTE && !may_trigger_transition) |
| 1464 |
|
continue; |
| 1465 |
|
if (first) { |
| 1466 |
|
ccs_set_group(head, "file "); |
| 1467 |
|
first = false; |
| 1468 |
|
} else { |
| 1469 |
|
ccs_set_slash(head); |
| 1470 |
|
} |
| 1471 |
|
ccs_set_string(head, ccs_path_keyword[bit]); |
| 1472 |
|
} |
| 1473 |
|
if (first) |
| 1474 |
|
return true; |
| 1475 |
|
ccs_print_name_union(head, &ptr->name); |
| 1476 |
|
} else if (acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER || |
| 1477 |
|
acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
| 1478 |
|
struct ccs_handler_acl *ptr |
| 1479 |
|
= container_of(acl, typeof(*ptr), head); |
| 1480 |
|
ccs_set_group(head, "task "); |
| 1481 |
|
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER |
| 1482 |
|
? "auto_execute_handler " : |
| 1483 |
|
"denied_execute_handler "); |
| 1484 |
|
ccs_set_string(head, ptr->handler->name); |
| 1485 |
|
} else if (acl_type == CCS_TYPE_AUTO_TASK_ACL || |
| 1486 |
|
acl_type == CCS_TYPE_MANUAL_TASK_ACL) { |
| 1487 |
|
struct ccs_task_acl *ptr = |
| 1488 |
|
container_of(acl, typeof(*ptr), head); |
| 1489 |
|
ccs_set_group(head, "task "); |
| 1490 |
|
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_TASK_ACL ? |
| 1491 |
|
"auto_domain_transition " : |
| 1492 |
|
"manual_domain_transition "); |
| 1493 |
|
ccs_set_string(head, ptr->domainname->name); |
| 1494 |
|
} else if (head->r.print_transition_related_only && |
| 1495 |
|
!may_trigger_transition) { |
| 1496 |
|
return true; |
| 1497 |
|
} else if (acl_type == CCS_TYPE_MKDEV_ACL) { |
| 1498 |
|
struct ccs_mkdev_acl *ptr = |
| 1499 |
|
container_of(acl, typeof(*ptr), head); |
| 1500 |
|
const u8 perm = ptr->perm; |
| 1501 |
|
for (bit = 0; bit < CCS_MAX_MKDEV_OPERATION; bit++) { |
| 1502 |
|
if (!(perm & (1 << bit))) |
| 1503 |
|
continue; |
| 1504 |
|
if (first) { |
| 1505 |
|
ccs_set_group(head, "file "); |
| 1506 |
|
first = false; |
| 1507 |
|
} else { |
| 1508 |
|
ccs_set_slash(head); |
| 1509 |
|
} |
| 1510 |
|
ccs_set_string(head, ccs_mac_keywords |
| 1511 |
|
[ccs_pnnn2mac[bit]]); |
| 1512 |
|
} |
| 1513 |
|
if (first) |
| 1514 |
|
return true; |
| 1515 |
|
ccs_print_name_union(head, &ptr->name); |
| 1516 |
|
ccs_print_number_union(head, &ptr->mode); |
| 1517 |
|
ccs_print_number_union(head, &ptr->major); |
| 1518 |
|
ccs_print_number_union(head, &ptr->minor); |
| 1519 |
|
} else if (acl_type == CCS_TYPE_PATH2_ACL) { |
| 1520 |
|
struct ccs_path2_acl *ptr = |
| 1521 |
|
container_of(acl, typeof(*ptr), head); |
| 1522 |
|
const u8 perm = ptr->perm; |
| 1523 |
|
for (bit = 0; bit < CCS_MAX_PATH2_OPERATION; bit++) { |
| 1524 |
|
if (!(perm & (1 << bit))) |
| 1525 |
|
continue; |
| 1526 |
|
if (first) { |
| 1527 |
|
ccs_set_group(head, "file "); |
| 1528 |
|
first = false; |
| 1529 |
|
} else { |
| 1530 |
|
ccs_set_slash(head); |
| 1531 |
|
} |
| 1532 |
|
ccs_set_string(head, ccs_mac_keywords |
| 1533 |
|
[ccs_pp2mac[bit]]); |
| 1534 |
|
} |
| 1535 |
|
if (first) |
| 1536 |
|
return true; |
| 1537 |
|
ccs_print_name_union(head, &ptr->name1); |
| 1538 |
|
ccs_print_name_union(head, &ptr->name2); |
| 1539 |
|
} else if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
| 1540 |
|
struct ccs_path_number_acl *ptr = |
| 1541 |
|
container_of(acl, typeof(*ptr), head); |
| 1542 |
|
const u8 perm = ptr->perm; |
| 1543 |
|
for (bit = 0; bit < CCS_MAX_PATH_NUMBER_OPERATION; bit++) { |
| 1544 |
|
if (!(perm & (1 << bit))) |
| 1545 |
|
continue; |
| 1546 |
|
if (first) { |
| 1547 |
|
ccs_set_group(head, "file "); |
| 1548 |
|
first = false; |
| 1549 |
|
} else { |
| 1550 |
|
ccs_set_slash(head); |
| 1551 |
|
} |
| 1552 |
|
ccs_set_string(head, ccs_mac_keywords |
| 1553 |
|
[ccs_pn2mac[bit]]); |
| 1554 |
|
} |
| 1555 |
|
if (first) |
| 1556 |
|
return true; |
| 1557 |
|
ccs_print_name_union(head, &ptr->name); |
| 1558 |
|
ccs_print_number_union(head, &ptr->number); |
| 1559 |
|
} else if (acl_type == CCS_TYPE_ENV_ACL) { |
| 1560 |
|
struct ccs_env_acl *ptr = |
| 1561 |
|
container_of(acl, typeof(*ptr), head); |
| 1562 |
|
ccs_set_group(head, "misc env "); |
| 1563 |
|
ccs_set_string(head, ptr->env->name); |
| 1564 |
|
} else if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
| 1565 |
|
struct ccs_capability_acl *ptr = |
| 1566 |
|
container_of(acl, typeof(*ptr), head); |
| 1567 |
|
ccs_set_group(head, "capability "); |
| 1568 |
|
ccs_set_string(head, ccs_mac_keywords |
| 1569 |
|
[ccs_c2mac[ptr->operation]]); |
| 1570 |
|
} else if (acl_type == CCS_TYPE_INET_ACL) { |
| 1571 |
|
struct ccs_inet_acl *ptr = |
| 1572 |
|
container_of(acl, typeof(*ptr), head); |
| 1573 |
|
const u8 perm = ptr->perm; |
| 1574 |
|
for (bit = 0; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
| 1575 |
|
if (!(perm & (1 << bit))) |
| 1576 |
|
continue; |
| 1577 |
|
if (first) { |
| 1578 |
|
ccs_set_group(head, "network inet "); |
| 1579 |
|
ccs_set_string(head, ccs_proto_keyword |
| 1580 |
|
[ptr->protocol]); |
| 1581 |
|
ccs_set_space(head); |
| 1582 |
|
first = false; |
| 1583 |
|
} else { |
| 1584 |
|
ccs_set_slash(head); |
| 1585 |
|
} |
| 1586 |
|
ccs_set_string(head, ccs_socket_keyword[bit]); |
| 1587 |
|
} |
| 1588 |
|
if (first) |
| 1589 |
|
return true; |
| 1590 |
|
ccs_set_space(head); |
| 1591 |
switch (ptr->address_type) { |
switch (ptr->address_type) { |
| 1592 |
|
char buf[128]; |
| 1593 |
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
| 1594 |
if (!ccs_io_printf(head, "@%s", ptr->address.group-> |
ccs_set_string(head, "@"); |
| 1595 |
group_name->name)) |
ccs_set_string(head, |
| 1596 |
goto out; |
ptr->address.group->group_name->name); |
| 1597 |
break; |
break; |
| 1598 |
case CCS_IP_ADDRESS_TYPE_IPv4: |
case CCS_IP_ADDRESS_TYPE_IPv4: |
| 1599 |
if (!ccs_print_ipv4_entry(head, ptr)) |
ccs_print_ipv4(buf, sizeof(buf), ptr->address.ipv4.min, |
| 1600 |
goto out; |
ptr->address.ipv4.max); |
| 1601 |
|
ccs_io_printf(head, "%s", buf); |
| 1602 |
break; |
break; |
| 1603 |
case CCS_IP_ADDRESS_TYPE_IPv6: |
case CCS_IP_ADDRESS_TYPE_IPv6: |
| 1604 |
if (!ccs_print_ipv6_entry(head, ptr)) |
ccs_print_ipv6(buf, sizeof(buf), ptr->address.ipv6.min, |
| 1605 |
goto out; |
ptr->address.ipv6.max); |
| 1606 |
|
ccs_io_printf(head, "%s", buf); |
| 1607 |
break; |
break; |
| 1608 |
} |
} |
| 1609 |
if (!ccs_print_number_union(head, &ptr->port) || |
ccs_print_number_union(head, &ptr->port); |
| 1610 |
!ccs_print_condition(head, cond)) |
} else if (acl_type == CCS_TYPE_UNIX_ACL) { |
| 1611 |
goto out; |
struct ccs_unix_acl *ptr = |
| 1612 |
} |
container_of(acl, typeof(*ptr), head); |
| 1613 |
head->read_bit = 0; |
const u8 perm = ptr->perm; |
| 1614 |
return true; |
for (bit = 0; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
| 1615 |
out: |
if (!(perm & (1 << bit))) |
| 1616 |
head->read_bit = bit; |
continue; |
| 1617 |
head->read_avail = pos; |
if (first) { |
| 1618 |
return false; |
ccs_set_group(head, "network unix "); |
| 1619 |
} |
ccs_set_string(head, ccs_proto_keyword |
| 1620 |
|
[ptr->protocol]); |
| 1621 |
/** |
ccs_set_space(head); |
| 1622 |
* ccs_print_signal_acl - Print a signal ACL entry. |
first = false; |
| 1623 |
* |
} else { |
| 1624 |
* @head: Pointer to "struct ccs_io_buffer". |
ccs_set_slash(head); |
| 1625 |
* @ptr: Pointer to "struct signale_acl". |
} |
| 1626 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
ccs_set_string(head, ccs_socket_keyword[bit]); |
| 1627 |
* |
} |
| 1628 |
* Returns true on success, false otherwise. |
if (first) |
| 1629 |
*/ |
return true; |
| 1630 |
static bool ccs_print_signal_acl(struct ccs_io_buffer *head, |
ccs_print_name_union(head, &ptr->name); |
| 1631 |
struct ccs_signal_acl *ptr, |
} else if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
| 1632 |
const struct ccs_condition *cond) |
struct ccs_signal_acl *ptr = |
| 1633 |
{ |
container_of(acl, typeof(*ptr), head); |
| 1634 |
const int pos = head->read_avail; |
ccs_set_group(head, "ipc signal "); |
| 1635 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_SIGNAL "%u %s", |
ccs_io_printf(head, "%u ", ptr->sig); |
| 1636 |
ptr->sig, ptr->domainname->name) || |
ccs_set_string(head, ptr->domainname->name); |
| 1637 |
!ccs_print_condition(head, cond)) { |
} else if (acl_type == CCS_TYPE_MOUNT_ACL) { |
| 1638 |
head->read_avail = pos; |
struct ccs_mount_acl *ptr = |
| 1639 |
return false; |
container_of(acl, typeof(*ptr), head); |
| 1640 |
} |
ccs_set_group(head, "file mount"); |
| 1641 |
return true; |
ccs_print_name_union(head, &ptr->dev_name); |
| 1642 |
} |
ccs_print_name_union(head, &ptr->dir_name); |
| 1643 |
|
ccs_print_name_union(head, &ptr->fs_type); |
| 1644 |
/** |
ccs_print_number_union(head, &ptr->flags); |
| 1645 |
* ccs_print_execute_handler_record - Print an execute handler ACL entry. |
} |
| 1646 |
* |
if (acl->cond) { |
| 1647 |
* @head: Pointer to "struct ccs_io_buffer". |
head->r.print_cond_part = true; |
| 1648 |
* @keyword: Name of the keyword. |
head->r.cond_step = 0; |
| 1649 |
* @ptr: Pointer to "struct ccs_execute_handler_record". |
if (!ccs_flush(head)) |
| 1650 |
* |
return false; |
| 1651 |
* Returns true on success, false otherwise. |
print_cond_part: |
| 1652 |
*/ |
if (!ccs_print_condition(head, acl->cond)) |
| 1653 |
static bool ccs_print_execute_handler_record(struct ccs_io_buffer *head, |
return false; |
| 1654 |
const char *keyword, |
head->r.print_cond_part = false; |
| 1655 |
struct ccs_execute_handler_record * |
} else { |
| 1656 |
ptr) |
ccs_set_lf(head); |
|
{ |
|
|
return ccs_io_printf(head, "%s %s\n", keyword, ptr->handler->name); |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_mount_acl - Print a mount ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_mount_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_mount_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_mount_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
const int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_MOUNT) || |
|
|
!ccs_print_name_union(head, &ptr->dev_name) || |
|
|
!ccs_print_name_union(head, &ptr->dir_name) || |
|
|
!ccs_print_name_union(head, &ptr->fs_type) || |
|
|
!ccs_print_number_union(head, &ptr->flags) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
return true; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_umount_acl - Print a mount ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_umount_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_print_umount_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_umount_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
const int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_UNMOUNT) || |
|
|
!ccs_print_name_union(head, &ptr->dir) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_avail = pos; |
|
|
return false; |
|
| 1657 |
} |
} |
| 1658 |
return true; |
return true; |
| 1659 |
} |
} |
| 1660 |
|
|
| 1661 |
/** |
/** |
| 1662 |
* ccs_print_chroot_acl - Print a chroot ACL entry. |
* ccs_read_domain2 - Read domain policy. |
| 1663 |
* |
* |
| 1664 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1665 |
* @ptr: Pointer to "struct ccs_chroot_acl". |
* @domain: Pointer to "struct ccs_domain_info". |
| 1666 |
* @cond: Pointer to "struct ccs_condition". May be NULL. |
* @index: Index number. |
| 1667 |
* |
* |
| 1668 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
|
*/ |
|
|
static bool ccs_print_chroot_acl(struct ccs_io_buffer *head, |
|
|
struct ccs_chroot_acl *ptr, |
|
|
const struct ccs_condition *cond) |
|
|
{ |
|
|
const int pos = head->read_avail; |
|
|
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_CHROOT) || |
|
|
!ccs_print_name_union(head, &ptr->dir) || |
|
|
!ccs_print_condition(head, cond)) { |
|
|
head->read_avail = pos; |
|
|
return false; |
|
|
} |
|
|
return true; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_print_pivot_root_acl - Print a pivot_root ACL entry. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* @ptr: Pointer to "struct ccs_pivot_root_acl". |
|
|
* @cond: Pointer to "struct ccs_condition". May be NULL. |
|
| 1669 |
* |
* |
| 1670 |
* Returns true on success, false otherwise. |
* Caller holds ccs_read_lock(). |
| 1671 |
*/ |
*/ |
| 1672 |
static bool ccs_print_pivot_root_acl(struct ccs_io_buffer *head, |
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
| 1673 |
struct ccs_pivot_root_acl *ptr, |
struct ccs_domain_info *domain, |
| 1674 |
const struct ccs_condition *cond) |
const u8 index) |
| 1675 |
{ |
{ |
| 1676 |
const int pos = head->read_avail; |
list_for_each_cookie(head->r.acl, &domain->acl_info_list[index]) { |
| 1677 |
if (!ccs_io_printf(head, CCS_KEYWORD_ALLOW_PIVOT_ROOT) || |
struct ccs_acl_info *ptr = |
| 1678 |
!ccs_print_name_union(head, &ptr->new_root) || |
list_entry(head->r.acl, typeof(*ptr), list); |
| 1679 |
!ccs_print_name_union(head, &ptr->old_root) || |
if (!ccs_print_entry(head, ptr)) |
| 1680 |
!ccs_print_condition(head, cond)) { |
return false; |
|
head->read_avail = pos; |
|
|
return false; |
|
| 1681 |
} |
} |
| 1682 |
|
head->r.acl = NULL; |
| 1683 |
return true; |
return true; |
| 1684 |
} |
} |
| 1685 |
|
|
| 1686 |
/** |
/** |
| 1687 |
* ccs_print_entry - Print an ACL entry. |
* ccs_read_domain - Read domain policy. |
| 1688 |
* |
* |
| 1689 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
|
* @ptr: Pointer to an ACL entry. |
|
| 1690 |
* |
* |
| 1691 |
* Returns true on success, false otherwise. |
* Returns nothing. |
|
*/ |
|
|
static bool ccs_print_entry(struct ccs_io_buffer *head, |
|
|
struct ccs_acl_info *ptr) |
|
|
{ |
|
|
const struct ccs_condition *cond = ptr->cond; |
|
|
const u8 acl_type = ptr->type; |
|
|
if (ptr->is_deleted) |
|
|
return true; |
|
|
if (acl_type == CCS_TYPE_PATH_ACL) { |
|
|
struct ccs_path_acl *acl |
|
|
= container_of(ptr, struct ccs_path_acl, |
|
|
head); |
|
|
return ccs_print_path_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_EXECUTE_HANDLER) { |
|
|
struct ccs_execute_handler_record *acl |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
|
|
head); |
|
|
const char *keyword = CCS_KEYWORD_EXECUTE_HANDLER; |
|
|
return ccs_print_execute_handler_record(head, keyword, acl); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
|
|
struct ccs_execute_handler_record *acl |
|
|
= container_of(ptr, struct ccs_execute_handler_record, |
|
|
head); |
|
|
const char *keyword = CCS_KEYWORD_DENIED_EXECUTE_HANDLER; |
|
|
return ccs_print_execute_handler_record(head, keyword, acl); |
|
|
} |
|
|
if (head->read_execute_only) |
|
|
return true; |
|
|
if (acl_type == CCS_TYPE_PATH_NUMBER3_ACL) { |
|
|
struct ccs_path_number3_acl *acl |
|
|
= container_of(ptr, struct ccs_path_number3_acl, head); |
|
|
return ccs_print_path_number3_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_PATH2_ACL) { |
|
|
struct ccs_path2_acl *acl |
|
|
= container_of(ptr, struct ccs_path2_acl, |
|
|
head); |
|
|
return ccs_print_path2_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
|
|
struct ccs_path_number_acl *acl |
|
|
= container_of(ptr, struct ccs_path_number_acl, |
|
|
head); |
|
|
return ccs_print_path_number_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_ENV_ACL) { |
|
|
struct ccs_env_acl *acl |
|
|
= container_of(ptr, struct ccs_env_acl, head); |
|
|
return ccs_print_env_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
|
|
struct ccs_capability_acl *acl |
|
|
= container_of(ptr, struct ccs_capability_acl, |
|
|
head); |
|
|
return ccs_print_capability_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_IP_NETWORK_ACL) { |
|
|
struct ccs_ip_network_acl *acl |
|
|
= container_of(ptr, struct ccs_ip_network_acl, |
|
|
head); |
|
|
return ccs_print_network_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
|
|
struct ccs_signal_acl *acl |
|
|
= container_of(ptr, struct ccs_signal_acl, head); |
|
|
return ccs_print_signal_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_MOUNT_ACL) { |
|
|
struct ccs_mount_acl *acl |
|
|
= container_of(ptr, struct ccs_mount_acl, head); |
|
|
return ccs_print_mount_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_UMOUNT_ACL) { |
|
|
struct ccs_umount_acl *acl |
|
|
= container_of(ptr, struct ccs_umount_acl, head); |
|
|
return ccs_print_umount_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_CHROOT_ACL) { |
|
|
struct ccs_chroot_acl *acl |
|
|
= container_of(ptr, struct ccs_chroot_acl, head); |
|
|
return ccs_print_chroot_acl(head, acl, cond); |
|
|
} |
|
|
if (acl_type == CCS_TYPE_PIVOT_ROOT_ACL) { |
|
|
struct ccs_pivot_root_acl *acl |
|
|
= container_of(ptr, struct ccs_pivot_root_acl, |
|
|
head); |
|
|
return ccs_print_pivot_root_acl(head, acl, cond); |
|
|
} |
|
|
BUG(); /* This must not happen. */ |
|
|
return false; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_read_domain_policy - Read domain policy. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* |
|
|
* Returns 0. |
|
| 1692 |
* |
* |
| 1693 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
| 1694 |
*/ |
*/ |
| 1695 |
static int ccs_read_domain_policy(struct ccs_io_buffer *head) |
static void ccs_read_domain(struct ccs_io_buffer *head) |
| 1696 |
{ |
{ |
| 1697 |
struct list_head *dpos; |
if (head->r.eof) |
| 1698 |
struct list_head *apos; |
return; |
| 1699 |
ccs_assert_read_lock(); |
list_for_each_cookie(head->r.domain, &ccs_domain_list) { |
| 1700 |
if (head->read_eof) |
struct ccs_domain_info *domain = |
| 1701 |
return 0; |
list_entry(head->r.domain, typeof(*domain), list); |
| 1702 |
if (head->read_step == 0) |
switch (head->r.step) { |
| 1703 |
head->read_step = 1; |
u8 i; |
| 1704 |
list_for_each_cookie(dpos, head->read_var1, &ccs_domain_list) { |
case 0: |
| 1705 |
struct ccs_domain_info *domain; |
if (domain->is_deleted && |
| 1706 |
const char *quota_exceeded = ""; |
!head->r.print_this_domain_only) |
| 1707 |
const char *transition_failed = ""; |
continue; |
| 1708 |
const char *ignore_global_allow_read = ""; |
/* Print domainname and flags. */ |
| 1709 |
const char *ignore_global_allow_env = ""; |
ccs_set_string(head, domain->domainname->name); |
| 1710 |
domain = list_entry(dpos, struct ccs_domain_info, list); |
ccs_set_lf(head); |
| 1711 |
if (head->read_step != 1) |
ccs_io_printf(head, "use_profile %u\n", |
| 1712 |
goto acl_loop; |
domain->profile); |
| 1713 |
if (domain->is_deleted && !head->read_single_domain) |
ccs_io_printf(head, "use_group %u\n", domain->group); |
| 1714 |
continue; |
for (i = 0; i < CCS_MAX_DOMAIN_INFO_FLAGS; i++) |
| 1715 |
/* Print domainname and flags. */ |
if (domain->flags[i]) |
| 1716 |
if (domain->quota_warned) |
ccs_set_string(head, ccs_dif[i]); |
| 1717 |
quota_exceeded = "quota_exceeded\n"; |
head->r.step++; |
| 1718 |
if (domain->domain_transition_failed) |
ccs_set_lf(head); |
| 1719 |
transition_failed = "transition_failed\n"; |
/* fall through */ |
| 1720 |
if (domain->ignore_global_allow_read) |
case 1: |
| 1721 |
ignore_global_allow_read |
if (!ccs_read_domain2(head, domain, 0)) |
| 1722 |
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "\n"; |
return; |
| 1723 |
if (domain->ignore_global_allow_env) |
head->r.step++; |
| 1724 |
ignore_global_allow_env |
/* fall through */ |
| 1725 |
= CCS_KEYWORD_IGNORE_GLOBAL_ALLOW_ENV "\n"; |
case 2: |
| 1726 |
if (!ccs_io_printf(head, "%s\n" CCS_KEYWORD_USE_PROFILE "%u\n" |
if (!ccs_read_domain2(head, domain, 1)) |
| 1727 |
"%s%s%s%s\n", domain->domainname->name, |
return; |
| 1728 |
domain->profile, quota_exceeded, |
head->r.step++; |
| 1729 |
transition_failed, |
if (!ccs_set_lf(head)) |
| 1730 |
ignore_global_allow_read, |
return; |
| 1731 |
ignore_global_allow_env)) |
/* fall through */ |
| 1732 |
return 0; |
case 3: |
| 1733 |
head->read_step = 2; |
head->r.step = 0; |
| 1734 |
acl_loop: |
if (head->r.print_this_domain_only) |
| 1735 |
if (head->read_step == 3) |
goto done; |
| 1736 |
goto tail_mark; |
} |
|
/* Print ACL entries in the domain. */ |
|
|
list_for_each_cookie(apos, head->read_var2, |
|
|
&domain->acl_info_list) { |
|
|
struct ccs_acl_info *ptr |
|
|
= list_entry(apos, struct ccs_acl_info, list); |
|
|
if (!ccs_print_entry(head, ptr)) |
|
|
return 0; |
|
|
} |
|
|
head->read_step = 3; |
|
|
tail_mark: |
|
|
if (!ccs_io_printf(head, "\n")) |
|
|
return 0; |
|
|
head->read_step = 1; |
|
|
if (head->read_single_domain) |
|
|
break; |
|
| 1737 |
} |
} |
| 1738 |
head->read_eof = true; |
done: |
| 1739 |
return 0; |
head->r.eof = true; |
| 1740 |
} |
} |
| 1741 |
|
|
| 1742 |
/** |
/** |
| 1749 |
* This is equivalent to doing |
* This is equivalent to doing |
| 1750 |
* |
* |
| 1751 |
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
| 1752 |
* /usr/lib/ccs/loadpolicy -d |
* /usr/sbin/ccs-loadpolicy -d |
| 1753 |
* |
* |
| 1754 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
| 1755 |
*/ |
*/ |
| 1759 |
char *cp = strchr(data, ' '); |
char *cp = strchr(data, ' '); |
| 1760 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
| 1761 |
unsigned int profile; |
unsigned int profile; |
|
ccs_assert_read_lock(); |
|
| 1762 |
if (!cp) |
if (!cp) |
| 1763 |
return -EINVAL; |
return -EINVAL; |
| 1764 |
*cp = '\0'; |
*cp = '\0'; |
| 1766 |
if (profile >= CCS_MAX_PROFILES) |
if (profile >= CCS_MAX_PROFILES) |
| 1767 |
return -EINVAL; |
return -EINVAL; |
| 1768 |
domain = ccs_find_domain(cp + 1); |
domain = ccs_find_domain(cp + 1); |
| 1769 |
if (domain && (ccs_profile_ptr[profile] || !ccs_policy_loaded)) |
if (domain && (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile])) |
| 1770 |
domain->profile = (u8) profile; |
domain->profile = (u8) profile; |
| 1771 |
return 0; |
return 0; |
| 1772 |
} |
} |
| 1776 |
* |
* |
| 1777 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1778 |
* |
* |
| 1779 |
* Returns list of profile number and domainname pairs. |
* Returns nothing. |
| 1780 |
* |
* |
| 1781 |
* This is equivalent to doing |
* This is equivalent to doing |
| 1782 |
* |
* |
| 1787 |
* |
* |
| 1788 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
| 1789 |
*/ |
*/ |
| 1790 |
static int ccs_read_domain_profile(struct ccs_io_buffer *head) |
static void ccs_read_domain_profile(struct ccs_io_buffer *head) |
| 1791 |
{ |
{ |
| 1792 |
struct list_head *pos; |
if (head->r.eof) |
| 1793 |
ccs_assert_read_lock(); |
return; |
| 1794 |
if (head->read_eof) |
list_for_each_cookie(head->r.domain, &ccs_domain_list) { |
| 1795 |
return 0; |
struct ccs_domain_info *domain = |
| 1796 |
list_for_each_cookie(pos, head->read_var1, &ccs_domain_list) { |
list_entry(head->r.domain, typeof(*domain), list); |
|
struct ccs_domain_info *domain; |
|
|
domain = list_entry(pos, struct ccs_domain_info, list); |
|
| 1797 |
if (domain->is_deleted) |
if (domain->is_deleted) |
| 1798 |
continue; |
continue; |
| 1799 |
if (!ccs_io_printf(head, "%u %s\n", domain->profile, |
if (!ccs_flush(head)) |
| 1800 |
domain->domainname->name)) |
return; |
| 1801 |
return 0; |
ccs_io_printf(head, "%u ", domain->profile); |
| 1802 |
|
ccs_set_string(head, domain->domainname->name); |
| 1803 |
|
ccs_set_lf(head); |
| 1804 |
} |
} |
| 1805 |
head->read_eof = true; |
head->r.eof = true; |
|
return 0; |
|
| 1806 |
} |
} |
| 1807 |
|
|
| 1808 |
/** |
/** |
| 1809 |
* ccs_write_pid: Specify PID to obtain domainname. |
* ccs_write_pid - Specify PID to obtain domainname. |
| 1810 |
* |
* |
| 1811 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1812 |
* |
* |
| 1814 |
*/ |
*/ |
| 1815 |
static int ccs_write_pid(struct ccs_io_buffer *head) |
static int ccs_write_pid(struct ccs_io_buffer *head) |
| 1816 |
{ |
{ |
| 1817 |
head->read_eof = false; |
head->r.eof = false; |
| 1818 |
return 0; |
return 0; |
| 1819 |
} |
} |
| 1820 |
|
|
| 1829 |
* |
* |
| 1830 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
| 1831 |
*/ |
*/ |
| 1832 |
static int ccs_read_pid(struct ccs_io_buffer *head) |
static void ccs_read_pid(struct ccs_io_buffer *head) |
| 1833 |
{ |
{ |
| 1834 |
char *buf = head->write_buf; |
char *buf = head->write_buf; |
| 1835 |
bool task_info = false; |
bool task_info = false; |
| 1836 |
|
bool global_pid = false; |
| 1837 |
unsigned int pid; |
unsigned int pid; |
| 1838 |
struct task_struct *p; |
struct task_struct *p; |
| 1839 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
| 1840 |
u32 ccs_flags = 0; |
u32 ccs_flags = 0; |
|
ccs_assert_read_lock(); |
|
| 1841 |
/* Accessing write_buf is safe because head->io_sem is held. */ |
/* Accessing write_buf is safe because head->io_sem is held. */ |
| 1842 |
if (!buf) |
if (!buf) { |
| 1843 |
goto done; /* Do nothing if open(O_RDONLY). */ |
head->r.eof = true; |
| 1844 |
if (head->read_avail || head->read_eof) |
return; /* Do nothing if open(O_RDONLY). */ |
| 1845 |
goto done; |
} |
| 1846 |
head->read_eof = true; |
if (head->r.w_pos || head->r.eof) |
| 1847 |
|
return; |
| 1848 |
|
head->r.eof = true; |
| 1849 |
if (ccs_str_starts(&buf, "info ")) |
if (ccs_str_starts(&buf, "info ")) |
| 1850 |
task_info = true; |
task_info = true; |
| 1851 |
|
if (ccs_str_starts(&buf, "global-pid ")) |
| 1852 |
|
global_pid = true; |
| 1853 |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
pid = (unsigned int) simple_strtoul(buf, NULL, 10); |
| 1854 |
read_lock(&tasklist_lock); |
ccs_tasklist_lock(); |
| 1855 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) |
| 1856 |
|
if (global_pid) |
| 1857 |
|
p = ccsecurity_exports.find_task_by_pid_ns(pid, &init_pid_ns); |
| 1858 |
|
else |
| 1859 |
|
p = ccsecurity_exports.find_task_by_vpid(pid); |
| 1860 |
|
#else |
| 1861 |
p = find_task_by_pid(pid); |
p = find_task_by_pid(pid); |
| 1862 |
|
#endif |
| 1863 |
if (p) { |
if (p) { |
| 1864 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
| 1865 |
ccs_flags = p->ccs_flags; |
ccs_flags = ccs_task_flags(p); |
| 1866 |
} |
} |
| 1867 |
read_unlock(&tasklist_lock); |
ccs_tasklist_unlock(); |
| 1868 |
if (!domain) |
if (!domain) |
| 1869 |
goto done; |
return; |
| 1870 |
if (!task_info) |
if (!task_info) { |
| 1871 |
ccs_io_printf(head, "%u %u %s", pid, domain->profile, |
ccs_io_printf(head, "%u %u ", pid, domain->profile); |
| 1872 |
domain->domainname->name); |
ccs_set_string(head, domain->domainname->name); |
| 1873 |
else |
} else { |
| 1874 |
ccs_io_printf(head, "%u manager=%s execute_handler=%s " |
ccs_io_printf(head, "%u manager=%s execute_handler=%s ", pid, |
| 1875 |
"state[0]=%u state[1]=%u state[2]=%u", pid, |
ccs_yesno(ccs_flags & |
| 1876 |
ccs_flags & CCS_TASK_IS_POLICY_MANAGER ? |
CCS_TASK_IS_MANAGER), |
| 1877 |
"yes" : "no", |
ccs_yesno(ccs_flags & |
| 1878 |
ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER ? |
CCS_TASK_IS_EXECUTE_HANDLER)); |
| 1879 |
"yes" : "no", |
} |
|
(u8) (ccs_flags >> 24), |
|
|
(u8) (ccs_flags >> 16), |
|
|
(u8) (ccs_flags >> 8)); |
|
|
done: |
|
|
return 0; |
|
| 1880 |
} |
} |
| 1881 |
|
|
| 1882 |
|
/* String table for domain transition control keywords. */ |
| 1883 |
|
static const char * const ccs_transition_type[CCS_MAX_TRANSITION_TYPE] = { |
| 1884 |
|
[CCS_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ", |
| 1885 |
|
[CCS_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ", |
| 1886 |
|
[CCS_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ", |
| 1887 |
|
[CCS_TRANSITION_CONTROL_KEEP] = "keep_domain ", |
| 1888 |
|
}; |
| 1889 |
|
|
| 1890 |
|
/* String table for grouping keywords. */ |
| 1891 |
|
static const char * const ccs_group_name[CCS_MAX_GROUP] = { |
| 1892 |
|
[CCS_PATH_GROUP] = "path_group ", |
| 1893 |
|
[CCS_NUMBER_GROUP] = "number_group ", |
| 1894 |
|
[CCS_ADDRESS_GROUP] = "address_group ", |
| 1895 |
|
}; |
| 1896 |
|
|
| 1897 |
/** |
/** |
| 1898 |
* ccs_write_exception_policy - Write exception policy. |
* ccs_write_exception - Write exception policy. |
| 1899 |
* |
* |
| 1900 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1901 |
* |
* |
| 1902 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
| 1903 |
*/ |
*/ |
| 1904 |
static int ccs_write_exception_policy(struct ccs_io_buffer *head) |
static int ccs_write_exception(struct ccs_io_buffer *head) |
| 1905 |
{ |
{ |
| 1906 |
char *data = head->write_buf; |
char *data = head->write_buf; |
| 1907 |
bool is_delete = ccs_str_starts(&data, CCS_KEYWORD_DELETE); |
const bool is_delete = ccs_str_starts(&data, "delete "); |
| 1908 |
if (ccs_str_starts(&data, CCS_KEYWORD_KEEP_DOMAIN)) |
u8 i; |
| 1909 |
return ccs_write_domain_keeper_policy(data, false, is_delete); |
static const struct { |
| 1910 |
if (ccs_str_starts(&data, CCS_KEYWORD_NO_KEEP_DOMAIN)) |
const char *keyword; |
| 1911 |
return ccs_write_domain_keeper_policy(data, true, is_delete); |
int (*write) (char *, const bool); |
| 1912 |
if (ccs_str_starts(&data, CCS_KEYWORD_INITIALIZE_DOMAIN)) |
} ccs_callback[2] = { |
| 1913 |
return ccs_write_domain_initializer_policy(data, false, |
{ "aggregator ", ccs_write_aggregator }, |
| 1914 |
is_delete); |
{ "deny_autobind ", ccs_write_reserved_port }, |
| 1915 |
if (ccs_str_starts(&data, CCS_KEYWORD_NO_INITIALIZE_DOMAIN)) |
}; |
| 1916 |
return ccs_write_domain_initializer_policy(data, true, |
if (!is_delete && ccs_str_starts(&data, "select ") && |
| 1917 |
is_delete); |
!strcmp(data, "transition_only")) { |
| 1918 |
if (ccs_str_starts(&data, CCS_KEYWORD_AGGREGATOR)) |
head->r.print_transition_related_only = true; |
| 1919 |
return ccs_write_aggregator_policy(data, is_delete); |
return -EAGAIN; |
| 1920 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_READ)) |
} |
| 1921 |
return ccs_write_globally_readable_policy(data, is_delete); |
/* Don't allow updating policies by non manager programs. */ |
| 1922 |
if (ccs_str_starts(&data, CCS_KEYWORD_ALLOW_ENV)) |
if (!ccs_manager()) |
| 1923 |
return ccs_write_globally_usable_env_policy(data, is_delete); |
return -EPERM; |
| 1924 |
if (ccs_str_starts(&data, CCS_KEYWORD_FILE_PATTERN)) |
for (i = 0; i < 2; i++) |
| 1925 |
return ccs_write_pattern_policy(data, is_delete); |
if (ccs_str_starts(&data, ccs_callback[i].keyword)) |
| 1926 |
if (ccs_str_starts(&data, CCS_KEYWORD_PATH_GROUP)) |
return ccs_callback[i].write(data, is_delete); |
| 1927 |
return ccs_write_path_group_policy(data, is_delete); |
for (i = 0; i < CCS_MAX_TRANSITION_TYPE; i++) |
| 1928 |
if (ccs_str_starts(&data, CCS_KEYWORD_NUMBER_GROUP)) |
if (ccs_str_starts(&data, ccs_transition_type[i])) |
| 1929 |
return ccs_write_number_group_policy(data, is_delete); |
return ccs_write_transition_control(data, is_delete, |
| 1930 |
if (ccs_str_starts(&data, CCS_KEYWORD_DENY_REWRITE)) |
i); |
| 1931 |
return ccs_write_no_rewrite_policy(data, is_delete); |
for (i = 0; i < CCS_MAX_GROUP; i++) |
| 1932 |
if (ccs_str_starts(&data, CCS_KEYWORD_ADDRESS_GROUP)) |
if (ccs_str_starts(&data, ccs_group_name[i])) |
| 1933 |
return ccs_write_address_group_policy(data, is_delete); |
return ccs_write_group(data, is_delete, i); |
| 1934 |
if (ccs_str_starts(&data, CCS_KEYWORD_DENY_AUTOBIND)) |
if (ccs_str_starts(&data, "acl_group ")) { |
| 1935 |
return ccs_write_reserved_port_policy(data, is_delete); |
unsigned int group; |
| 1936 |
|
if (sscanf(data, "%u", &group) == 1 && |
| 1937 |
|
group < CCS_MAX_ACL_GROUPS) { |
| 1938 |
|
data = strchr(data, ' '); |
| 1939 |
|
if (data) |
| 1940 |
|
return ccs_write_domain2(data + 1, |
| 1941 |
|
&ccs_acl_group[group], |
| 1942 |
|
is_delete); |
| 1943 |
|
} |
| 1944 |
|
} |
| 1945 |
return -EINVAL; |
return -EINVAL; |
| 1946 |
} |
} |
| 1947 |
|
|
| 1948 |
/** |
/** |
| 1949 |
* ccs_read_exception_policy - Read exception policy. |
* ccs_read_group - Read "struct ccs_path_group"/"struct ccs_number_group"/"struct ccs_address_group" list. |
| 1950 |
* |
* |
| 1951 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
| 1952 |
|
* @idx: Index number. |
| 1953 |
* |
* |
| 1954 |
* Returns 0 on success, -EINVAL otherwise. |
* Returns true on success, false otherwise. |
| 1955 |
* |
* |
| 1956 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
| 1957 |
*/ |
*/ |
| 1958 |
static int ccs_read_exception_policy(struct ccs_io_buffer *head) |
static bool ccs_read_group(struct ccs_io_buffer *head, const int idx) |
| 1959 |
{ |
{ |
| 1960 |
ccs_assert_read_lock(); |
list_for_each_cookie(head->r.group, &ccs_group_list[idx]) { |
| 1961 |
if (!head->read_eof) { |
struct ccs_group *group = |
| 1962 |
switch (head->read_step) { |
list_entry(head->r.group, typeof(*group), head.list); |
| 1963 |
case 0: |
list_for_each_cookie(head->r.acl, &group->member_list) { |
| 1964 |
head->read_var2 = NULL; |
struct ccs_acl_head *ptr = |
| 1965 |
head->read_step = 1; |
list_entry(head->r.acl, typeof(*ptr), list); |
| 1966 |
case 1: |
if (ptr->is_deleted) |
| 1967 |
if (!ccs_read_domain_keeper_policy(head)) |
continue; |
| 1968 |
break; |
if (!ccs_flush(head)) |
| 1969 |
head->read_var2 = NULL; |
return false; |
| 1970 |
head->read_step = 2; |
ccs_set_string(head, ccs_group_name[idx]); |
| 1971 |
case 2: |
ccs_set_string(head, group->group_name->name); |
| 1972 |
if (!ccs_read_globally_readable_policy(head)) |
if (idx == CCS_PATH_GROUP) { |
| 1973 |
break; |
ccs_set_space(head); |
| 1974 |
head->read_var2 = NULL; |
ccs_set_string(head, container_of |
| 1975 |
head->read_step = 3; |
(ptr, struct ccs_path_group, |
| 1976 |
case 3: |
head)->member_name->name); |
| 1977 |
if (!ccs_read_globally_usable_env_policy(head)) |
} else if (idx == CCS_NUMBER_GROUP) { |
| 1978 |
break; |
ccs_print_number_union(head, &container_of |
| 1979 |
head->read_var2 = NULL; |
(ptr, struct ccs_number_group, |
| 1980 |
head->read_step = 4; |
head)->number); |
| 1981 |
case 4: |
} else if (idx == CCS_ADDRESS_GROUP) { |
| 1982 |
if (!ccs_read_domain_initializer_policy(head)) |
char buffer[128]; |
| 1983 |
break; |
struct ccs_address_group *member = |
| 1984 |
head->read_var2 = NULL; |
container_of(ptr, typeof(*member), |
| 1985 |
head->read_step = 6; |
head); |
| 1986 |
case 6: |
if (member->is_ipv6) |
| 1987 |
if (!ccs_read_aggregator_policy(head)) |
ccs_print_ipv6(buffer, sizeof(buffer), |
| 1988 |
break; |
member->min.ipv6, |
| 1989 |
head->read_var2 = NULL; |
member->max.ipv6); |
| 1990 |
head->read_step = 7; |
else |
| 1991 |
case 7: |
ccs_print_ipv4(buffer, sizeof(buffer), |
| 1992 |
if (!ccs_read_file_pattern(head)) |
member->min.ipv4, |
| 1993 |
break; |
member->max.ipv4); |
| 1994 |
head->read_var2 = NULL; |
ccs_io_printf(head, " %s", buffer); |
| 1995 |
head->read_step = 8; |
} |
| 1996 |
case 8: |
ccs_set_lf(head); |
|
if (!ccs_read_no_rewrite_policy(head)) |
|
|
break; |
|
|
head->read_var2 = NULL; |
|
|
head->read_step = 9; |
|
|
case 9: |
|
|
if (!ccs_read_path_group_policy(head)) |
|
|
break; |
|
|
head->read_var1 = NULL; |
|
|
head->read_var2 = NULL; |
|
|
head->read_step = 10; |
|
|
case 10: |
|
|
if (!ccs_read_number_group_policy(head)) |
|
|
break; |
|
|
head->read_var1 = NULL; |
|
|
head->read_var2 = NULL; |
|
|
head->read_step = 11; |
|
|
case 11: |
|
|
if (!ccs_read_address_group_policy(head)) |
|
|
break; |
|
|
head->read_var2 = NULL; |
|
|
head->read_step = 12; |
|
|
case 12: |
|
|
if (!ccs_read_reserved_port_policy(head)) |
|
|
break; |
|
|
head->read_eof = true; |
|
|
break; |
|
|
default: |
|
|
return -EINVAL; |
|
| 1997 |
} |
} |
| 1998 |
|
head->r.acl = NULL; |
| 1999 |
} |
} |
| 2000 |
return 0; |
head->r.group = NULL; |
| 2001 |
|
return true; |
| 2002 |
} |
} |
| 2003 |
|
|
| 2004 |
/** |
/** |
| 2005 |
* ccs_get_argv0 - Get argv[0]. |
* ccs_read_policy - Read "struct ccs_..._entry" list. |
| 2006 |
* |
* |
| 2007 |
* @ee: Pointer to "struct ccs_execve_entry". |
* @head: Pointer to "struct ccs_io_buffer". |
| 2008 |
|
* @idx: Index number. |
| 2009 |
* |
* |
| 2010 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
| 2011 |
|
* |
| 2012 |
|
* Caller holds ccs_read_lock(). |
| 2013 |
*/ |
*/ |
| 2014 |
static bool ccs_get_argv0(struct ccs_execve_entry *ee) |
static bool ccs_read_policy(struct ccs_io_buffer *head, const int idx) |
| 2015 |
{ |
{ |
| 2016 |
struct linux_binprm *bprm = ee->bprm; |
list_for_each_cookie(head->r.acl, &ccs_policy_list[idx]) { |
| 2017 |
char *arg_ptr = ee->tmp; |
struct ccs_acl_head *acl = |
| 2018 |
int arg_len = 0; |
container_of(head->r.acl, typeof(*acl), list); |
| 2019 |
unsigned long pos = bprm->p; |
if (acl->is_deleted) |
| 2020 |
int offset = pos % PAGE_SIZE; |
continue; |
| 2021 |
bool done = false; |
if (head->r.print_transition_related_only && |
| 2022 |
if (!bprm->argc) |
idx != CCS_ID_TRANSITION_CONTROL) |
| 2023 |
goto out; |
continue; |
| 2024 |
while (1) { |
if (!ccs_flush(head)) |
| 2025 |
if (!ccs_dump_page(bprm, pos, &ee->dump)) |
return false; |
| 2026 |
goto out; |
switch (idx) { |
| 2027 |
pos += PAGE_SIZE - offset; |
case CCS_ID_TRANSITION_CONTROL: |
| 2028 |
/* Read. */ |
{ |
| 2029 |
while (offset < PAGE_SIZE) { |
struct ccs_transition_control *ptr = |
| 2030 |
const char *kaddr = ee->dump.data; |
container_of(acl, typeof(*ptr), head); |
| 2031 |
const unsigned char c = kaddr[offset++]; |
ccs_set_string(head, |
| 2032 |
if (c && arg_len < CCS_EXEC_TMPSIZE - 10) { |
ccs_transition_type[ptr->type]); |
| 2033 |
if (c == '\\') { |
ccs_set_string(head, ptr->program ? |
| 2034 |
arg_ptr[arg_len++] = '\\'; |
ptr->program->name : "any"); |
| 2035 |
arg_ptr[arg_len++] = '\\'; |
ccs_set_string(head, " from "); |
| 2036 |
} else if (c == '/') { |
ccs_set_string(head, ptr->domainname ? |
| 2037 |
arg_len = 0; |
ptr->domainname->name : "any"); |
|
} else if (c > ' ' && c < 127) { |
|
|
arg_ptr[arg_len++] = c; |
|
|
} else { |
|
|
arg_ptr[arg_len++] = '\\'; |
|
|
arg_ptr[arg_len++] = (c >> 6) + '0'; |
|
|
arg_ptr[arg_len++] |
|
|
= ((c >> 3) & 7) + '0'; |
|
|
arg_ptr[arg_len++] = (c & 7) + '0'; |
|
|
} |
|
|
} else { |
|
|
arg_ptr[arg_len] = '\0'; |
|
|
done = true; |
|
|
break; |
|
| 2038 |
} |
} |
|
} |
|
|
offset = 0; |
|
|
if (done) |
|
| 2039 |
break; |
break; |
| 2040 |
|
case CCS_ID_AGGREGATOR: |
| 2041 |
|
{ |
| 2042 |
|
struct ccs_aggregator *ptr = |
| 2043 |
|
container_of(acl, typeof(*ptr), head); |
| 2044 |
|
ccs_set_string(head, "aggregator "); |
| 2045 |
|
ccs_set_string(head, ptr->original_name->name); |
| 2046 |
|
ccs_set_space(head); |
| 2047 |
|
ccs_set_string(head, |
| 2048 |
|
ptr->aggregated_name->name); |
| 2049 |
|
} |
| 2050 |
|
break; |
| 2051 |
|
case CCS_ID_RESERVEDPORT: |
| 2052 |
|
{ |
| 2053 |
|
struct ccs_reserved *ptr = |
| 2054 |
|
container_of(acl, typeof(*ptr), head); |
| 2055 |
|
const u16 min_port = ptr->min_port; |
| 2056 |
|
const u16 max_port = ptr->max_port; |
| 2057 |
|
ccs_set_string(head, "deny_autobind "); |
| 2058 |
|
ccs_io_printf(head, "%u", min_port); |
| 2059 |
|
if (min_port != max_port) |
| 2060 |
|
ccs_io_printf(head, "-%u", max_port); |
| 2061 |
|
} |
| 2062 |
|
break; |
| 2063 |
|
default: |
| 2064 |
|
continue; |
| 2065 |
|
} |
| 2066 |
|
ccs_set_lf(head); |
| 2067 |
} |
} |
| 2068 |
|
head->r.acl = NULL; |
| 2069 |
return true; |
return true; |
|
out: |
|
|
return false; |
|
| 2070 |
} |
} |
| 2071 |
|
|
| 2072 |
static struct ccs_condition *ccs_get_execute_condition(struct ccs_execve_entry |
/** |
| 2073 |
*ee) |
* ccs_read_exception - Read exception policy. |
| 2074 |
|
* |
| 2075 |
|
* @head: Pointer to "struct ccs_io_buffer". |
| 2076 |
|
* |
| 2077 |
|
* Returns nothing. |
| 2078 |
|
* |
| 2079 |
|
* Caller holds ccs_read_lock(). |
| 2080 |
|
*/ |
| 2081 |
|
static void ccs_read_exception(struct ccs_io_buffer *head) |
| 2082 |
{ |
{ |
| 2083 |
struct ccs_condition *cond; |
if (head->r.eof) |
| 2084 |
char *buf; |
return; |
| 2085 |
int len = 256; |
while (head->r.step < CCS_MAX_POLICY && |
| 2086 |
char *realpath = NULL; |
ccs_read_policy(head, head->r.step)) |
| 2087 |
char *argv0 = NULL; |
head->r.step++; |
| 2088 |
if (ccs_flags(NULL, CCS_AUTOLEARN_EXEC_REALPATH)) { |
if (head->r.step < CCS_MAX_POLICY) |
| 2089 |
struct file *file = ee->bprm->file; |
return; |
| 2090 |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20) |
while (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP && |
| 2091 |
struct path path = { file->f_vfsmnt, file->f_dentry }; |
ccs_read_group(head, head->r.step - CCS_MAX_POLICY)) |
| 2092 |
realpath = ccs_realpath_from_path(&path); |
head->r.step++; |
| 2093 |
#else |
if (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP) |
| 2094 |
realpath = ccs_realpath_from_path(&file->f_path); |
return; |
| 2095 |
#endif |
while (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP |
| 2096 |
if (realpath) |
+ CCS_MAX_ACL_GROUPS * 2) { |
| 2097 |
len += strlen(realpath) + 17; |
head->r.acl_group_index = (head->r.step - CCS_MAX_POLICY |
| 2098 |
|
- CCS_MAX_GROUP) / 2; |
| 2099 |
|
if (!ccs_read_domain2(head, |
| 2100 |
|
&ccs_acl_group[head->r.acl_group_index], |
| 2101 |
|
head->r.step & 1)) |
| 2102 |
|
return; |
| 2103 |
|
head->r.step++; |
| 2104 |
} |
} |
| 2105 |
if (ccs_flags(NULL, CCS_AUTOLEARN_EXEC_REALPATH)) { |
head->r.eof = true; |
|
if (ccs_get_argv0(ee)) { |
|
|
argv0 = ee->tmp; |
|
|
len += strlen(argv0) + 16; |
|
|
} |
|
|
} |
|
|
buf = kmalloc(len, GFP_KERNEL); |
|
|
if (!buf) |
|
|
return NULL; |
|
|
snprintf(buf, len - 1, "if"); |
|
|
if (current->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER) { |
|
|
const int pos = strlen(buf); |
|
|
snprintf(buf + pos, len - pos - 1, |
|
|
" task.type=execute_handler"); |
|
|
} |
|
|
if (realpath) { |
|
|
const int pos = strlen(buf); |
|
|
snprintf(buf + pos, len - pos - 1, " exec.realpath=\"%s\"", |
|
|
realpath); |
|
|
kfree(realpath); |
|
|
} |
|
|
if (argv0) { |
|
|
const int pos = strlen(buf); |
|
|
snprintf(buf + pos, len - pos - 1, " exec.argv[0]=\"%s\"", |
|
|
argv0); |
|
|
} |
|
|
cond = ccs_get_condition(buf); |
|
|
kfree(buf); |
|
|
return cond; |
|
| 2106 |
} |
} |
| 2107 |
|
|
| 2108 |
/* Wait queue for ccs_query_list. */ |
/* Wait queue for kernel -> userspace notification. */ |
| 2109 |
static DECLARE_WAIT_QUEUE_HEAD(ccs_query_wait); |
static DECLARE_WAIT_QUEUE_HEAD(ccs_query_wait); |
| 2110 |
|
/* Wait queue for userspace -> kernel notification. */ |
| 2111 |
/* Lock for manipulating ccs_query_list. */ |
static DECLARE_WAIT_QUEUE_HEAD(ccs_answer_wait); |
|
static DEFINE_SPINLOCK(ccs_query_list_lock); |
|
| 2112 |
|
|
| 2113 |
/* Structure for query. */ |
/* Structure for query. */ |
| 2114 |
struct ccs_query_entry { |
struct ccs_query { |
| 2115 |
struct list_head list; |
struct list_head list; |
| 2116 |
char *query; |
char *query; |
| 2117 |
int query_len; |
size_t query_len; |
| 2118 |
unsigned int serial; |
unsigned int serial; |
| 2119 |
int timer; |
u8 timer; |
| 2120 |
int answer; |
u8 answer; |
| 2121 |
|
u8 retry; |
| 2122 |
}; |
}; |
| 2123 |
|
|
| 2124 |
/* The list for "struct ccs_query_entry". */ |
/* The list for "struct ccs_query". */ |
| 2125 |
static LIST_HEAD(ccs_query_list); |
static LIST_HEAD(ccs_query_list); |
| 2126 |
|
|
| 2127 |
|
/* Lock for manipulating ccs_query_list. */ |
| 2128 |
|
static DEFINE_SPINLOCK(ccs_query_list_lock); |
| 2129 |
|
|
| 2130 |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
| 2131 |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
| 2132 |
|
|
|
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