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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) 2005-2010 NTT DATA CORPORATION |
* Copyright (C) 2005-2011 NTT DATA CORPORATION |
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* |
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* Version: 1.8.0-pre 2010/10/10 |
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* |
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* This file is applicable to both 2.4.30 and 2.6.11 and later. |
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* See README.ccs for ChangeLog. |
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* |
* |
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* Version: 1.8.3 2011/09/29 |
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*/ |
*/ |
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#include "internal.h" |
#include "internal.h" |
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/* Profile version. Currently only 20100903 is defined. */ |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0) |
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static unsigned int ccs_profile_version; |
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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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* @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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/* Profile table. Memory is allocated as needed. */ |
#endif |
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static struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
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/* String table for functionality that takes 4 modes. */ |
/** |
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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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/* String table for operation mode. */ |
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const char * const ccs_mode[CCS_CONFIG_MAX_MODE] = { |
const char * const ccs_mode[CCS_CONFIG_MAX_MODE] = { |
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[CCS_CONFIG_DISABLED] = "disabled", |
[CCS_CONFIG_DISABLED] = "disabled", |
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[CCS_CONFIG_LEARNING] = "learning", |
[CCS_CONFIG_LEARNING] = "learning", |
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[CCS_CONFIG_ENFORCING] = "enforcing" |
[CCS_CONFIG_ENFORCING] = "enforcing" |
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}; |
}; |
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/* String table for /proc/ccs/profile */ |
/* String table for /proc/ccs/profile interface. */ |
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const char * const ccs_mac_keywords[CCS_MAX_MAC_INDEX |
const char * const ccs_mac_keywords[CCS_MAX_MAC_INDEX |
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+ CCS_MAX_MAC_CATEGORY_INDEX] = { |
+ CCS_MAX_MAC_CATEGORY_INDEX] = { |
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/* CONFIG::file group */ |
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[CCS_MAC_FILE_EXECUTE] = "execute", |
[CCS_MAC_FILE_EXECUTE] = "execute", |
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[CCS_MAC_FILE_OPEN] = "open", |
[CCS_MAC_FILE_OPEN] = "open", |
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[CCS_MAC_FILE_CREATE] = "create", |
[CCS_MAC_FILE_CREATE] = "create", |
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[CCS_MAC_FILE_UNLINK] = "unlink", |
[CCS_MAC_FILE_UNLINK] = "unlink", |
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[CCS_MAC_FILE_GETATTR] = "getattr", |
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[CCS_MAC_FILE_MKDIR] = "mkdir", |
[CCS_MAC_FILE_MKDIR] = "mkdir", |
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[CCS_MAC_FILE_RMDIR] = "rmdir", |
[CCS_MAC_FILE_RMDIR] = "rmdir", |
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[CCS_MAC_FILE_MKFIFO] = "mkfifo", |
[CCS_MAC_FILE_MKFIFO] = "mkfifo", |
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[CCS_MAC_FILE_MOUNT] = "mount", |
[CCS_MAC_FILE_MOUNT] = "mount", |
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[CCS_MAC_FILE_UMOUNT] = "unmount", |
[CCS_MAC_FILE_UMOUNT] = "unmount", |
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[CCS_MAC_FILE_PIVOT_ROOT] = "pivot_root", |
[CCS_MAC_FILE_PIVOT_ROOT] = "pivot_root", |
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/* CONFIG::misc group */ |
118 |
[CCS_MAC_ENVIRON] = "env", |
[CCS_MAC_ENVIRON] = "env", |
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/* CONFIG::network group */ |
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[CCS_MAC_NETWORK_INET_STREAM_BIND] = "inet_stream_bind", |
[CCS_MAC_NETWORK_INET_STREAM_BIND] = "inet_stream_bind", |
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[CCS_MAC_NETWORK_INET_STREAM_LISTEN] = "inet_stream_listen", |
[CCS_MAC_NETWORK_INET_STREAM_LISTEN] = "inet_stream_listen", |
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[CCS_MAC_NETWORK_INET_STREAM_CONNECT] = "inet_stream_connect", |
[CCS_MAC_NETWORK_INET_STREAM_CONNECT] = "inet_stream_connect", |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_LISTEN] = "unix_seqpacket_listen", |
[CCS_MAC_NETWORK_UNIX_SEQPACKET_LISTEN] = "unix_seqpacket_listen", |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_CONNECT] = "unix_seqpacket_connect", |
[CCS_MAC_NETWORK_UNIX_SEQPACKET_CONNECT] = "unix_seqpacket_connect", |
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[CCS_MAC_NETWORK_UNIX_SEQPACKET_ACCEPT] = "unix_seqpacket_accept", |
[CCS_MAC_NETWORK_UNIX_SEQPACKET_ACCEPT] = "unix_seqpacket_accept", |
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/* CONFIG::ipc group */ |
142 |
[CCS_MAC_SIGNAL] = "signal", |
[CCS_MAC_SIGNAL] = "signal", |
143 |
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/* CONFIG::capability group */ |
144 |
[CCS_MAC_CAPABILITY_USE_ROUTE_SOCKET] = "use_route", |
[CCS_MAC_CAPABILITY_USE_ROUTE_SOCKET] = "use_route", |
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[CCS_MAC_CAPABILITY_USE_PACKET_SOCKET] = "use_packet", |
[CCS_MAC_CAPABILITY_USE_PACKET_SOCKET] = "use_packet", |
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[CCS_MAC_CAPABILITY_SYS_REBOOT] = "SYS_REBOOT", |
[CCS_MAC_CAPABILITY_SYS_REBOOT] = "SYS_REBOOT", |
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[CCS_MAC_CAPABILITY_USE_KERNEL_MODULE] = "use_kernel_module", |
[CCS_MAC_CAPABILITY_USE_KERNEL_MODULE] = "use_kernel_module", |
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[CCS_MAC_CAPABILITY_SYS_KEXEC_LOAD] = "SYS_KEXEC_LOAD", |
[CCS_MAC_CAPABILITY_SYS_KEXEC_LOAD] = "SYS_KEXEC_LOAD", |
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[CCS_MAC_CAPABILITY_SYS_PTRACE] = "SYS_PTRACE", |
[CCS_MAC_CAPABILITY_SYS_PTRACE] = "SYS_PTRACE", |
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/* CONFIG group */ |
155 |
[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_FILE] = "file", |
[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_FILE] = "file", |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_NETWORK] = "network", |
[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_NETWORK] = "network", |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_MISC] = "misc", |
[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_MISC] = "misc", |
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[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
[CCS_MAX_MAC_INDEX + CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
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}; |
}; |
161 |
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162 |
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/* String table for path operation. */ |
163 |
const char * const ccs_path_keyword[CCS_MAX_PATH_OPERATION] = { |
const char * const ccs_path_keyword[CCS_MAX_PATH_OPERATION] = { |
164 |
[CCS_TYPE_EXECUTE] = "execute", |
[CCS_TYPE_EXECUTE] = "execute", |
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[CCS_TYPE_READ] = "read", |
[CCS_TYPE_READ] = "read", |
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[CCS_TYPE_WRITE] = "write", |
[CCS_TYPE_WRITE] = "write", |
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[CCS_TYPE_APPEND] = "append", |
[CCS_TYPE_APPEND] = "append", |
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[CCS_TYPE_UNLINK] = "unlink", |
[CCS_TYPE_UNLINK] = "unlink", |
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[CCS_TYPE_GETATTR] = "getattr", |
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[CCS_TYPE_RMDIR] = "rmdir", |
[CCS_TYPE_RMDIR] = "rmdir", |
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[CCS_TYPE_TRUNCATE] = "truncate", |
[CCS_TYPE_TRUNCATE] = "truncate", |
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[CCS_TYPE_SYMLINK] = "symlink", |
[CCS_TYPE_SYMLINK] = "symlink", |
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[CCS_TYPE_UMOUNT] = "unmount", |
[CCS_TYPE_UMOUNT] = "unmount", |
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}; |
}; |
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/* String table for socket's operation. */ |
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const char * const ccs_socket_keyword[CCS_MAX_NETWORK_OPERATION] = { |
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[CCS_NETWORK_BIND] = "bind", |
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[CCS_NETWORK_LISTEN] = "listen", |
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[CCS_NETWORK_CONNECT] = "connect", |
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[CCS_NETWORK_ACCEPT] = "accept", |
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[CCS_NETWORK_SEND] = "send", |
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[CCS_NETWORK_RECV] = "recv", |
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}; |
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/* String table for categories. */ |
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static const char * const ccs_category_keywords[CCS_MAX_MAC_CATEGORY_INDEX] = { |
static const char * const ccs_category_keywords[CCS_MAX_MAC_CATEGORY_INDEX] = { |
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[CCS_MAC_CATEGORY_FILE] = "file", |
[CCS_MAC_CATEGORY_FILE] = "file", |
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[CCS_MAC_CATEGORY_NETWORK] = "network", |
[CCS_MAC_CATEGORY_NETWORK] = "network", |
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[CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
[CCS_MAC_CATEGORY_CAPABILITY] = "capability", |
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}; |
}; |
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/* String table for conditions. */ |
197 |
const char * const ccs_condition_keyword[CCS_MAX_CONDITION_KEYWORD] = { |
const char * const ccs_condition_keyword[CCS_MAX_CONDITION_KEYWORD] = { |
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[CCS_TASK_UID] = "task.uid", |
[CCS_TASK_UID] = "task.uid", |
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[CCS_TASK_EUID] = "task.euid", |
[CCS_TASK_EUID] = "task.euid", |
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[CCS_PATH2_PARENT_PERM] = "path2.parent.perm", |
[CCS_PATH2_PARENT_PERM] = "path2.parent.perm", |
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}; |
}; |
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/* String table for PREFERENCE keyword. */ |
262 |
static const char * const ccs_pref_keywords[CCS_MAX_PREF] = { |
static const char * const ccs_pref_keywords[CCS_MAX_PREF] = { |
263 |
[CCS_PREF_MAX_GRANT_LOG] = "max_grant_log", |
[CCS_PREF_MAX_AUDIT_LOG] = "max_audit_log", |
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[CCS_PREF_MAX_REJECT_LOG] = "max_reject_log", |
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[CCS_PREF_MAX_LEARNING_ENTRY] = "max_learning_entry", |
[CCS_PREF_MAX_LEARNING_ENTRY] = "max_learning_entry", |
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[CCS_PREF_ENFORCING_PENALTY] = "enforcing_penalty", |
[CCS_PREF_ENFORCING_PENALTY] = "enforcing_penalty", |
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}; |
}; |
272 |
* ccs_yesno - Return "yes" or "no". |
* ccs_yesno - Return "yes" or "no". |
273 |
* |
* |
274 |
* @value: Bool value. |
* @value: Bool value. |
275 |
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* |
276 |
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* Returns "yes" if @value is not 0, "no" otherwise. |
277 |
*/ |
*/ |
278 |
static const char *ccs_yesno(const unsigned int value) |
const char *ccs_yesno(const unsigned int value) |
279 |
{ |
{ |
280 |
return value ? "yes" : "no"; |
return value ? "yes" : "no"; |
281 |
} |
} |
282 |
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283 |
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/* Prototype for ccs_addprintf(). */ |
284 |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
285 |
__attribute__ ((format(printf, 3, 4))); |
__attribute__ ((format(printf, 3, 4))); |
286 |
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287 |
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/** |
288 |
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* ccs_addprintf - strncat()-like-snprintf(). |
289 |
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* |
290 |
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* @buffer: Buffer to write to. Must be '\0'-terminated. |
291 |
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* @len: Size of @buffer. |
292 |
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* @fmt: The printf()'s format string, followed by parameters. |
293 |
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* |
294 |
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* Returns nothing. |
295 |
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*/ |
296 |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
static void ccs_addprintf(char *buffer, int len, const char *fmt, ...) |
297 |
{ |
{ |
298 |
va_list args; |
va_list args; |
305 |
/** |
/** |
306 |
* ccs_flush - Flush queued string to userspace's buffer. |
* ccs_flush - Flush queued string to userspace's buffer. |
307 |
* |
* |
308 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
309 |
* |
* |
310 |
* Returns true if all data was flushed, false otherwise. |
* Returns true if all data was flushed, false otherwise. |
311 |
*/ |
*/ |
313 |
{ |
{ |
314 |
while (head->r.w_pos) { |
while (head->r.w_pos) { |
315 |
const char *w = head->r.w[0]; |
const char *w = head->r.w[0]; |
316 |
int len = strlen(w); |
size_t len = strlen(w); |
317 |
if (len) { |
if (len) { |
318 |
if (len > head->read_user_buf_avail) |
if (len > head->read_user_buf_avail) |
319 |
len = head->read_user_buf_avail; |
len = head->read_user_buf_avail; |
325 |
head->read_user_buf += len; |
head->read_user_buf += len; |
326 |
w += len; |
w += len; |
327 |
} |
} |
328 |
if (*w) { |
head->r.w[0] = w; |
329 |
head->r.w[0] = w; |
if (*w) |
330 |
return false; |
return false; |
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} |
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331 |
/* Add '\0' for audit logs and query. */ |
/* Add '\0' for audit logs and query. */ |
332 |
if (head->poll) { |
if (head->type == CCS_AUDIT || head->type == CCS_QUERY) { |
333 |
if (!head->read_user_buf_avail || |
if (!head->read_user_buf_avail || |
334 |
copy_to_user(head->read_user_buf, "", 1)) |
copy_to_user(head->read_user_buf, "", 1)) |
335 |
return false; |
return false; |
350 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
351 |
* @string: String to print. |
* @string: String to print. |
352 |
* |
* |
353 |
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* Returns nothing. |
354 |
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* |
355 |
* Note that @string has to be kept valid until @head is kfree()d. |
* Note that @string has to be kept valid until @head is kfree()d. |
356 |
* This means that char[] allocated on stack memory cannot be passed to |
* This means that char[] allocated on stack memory cannot be passed to |
357 |
* this function. Use ccs_io_printf() for char[] allocated on stack memory. |
* this function. Use ccs_io_printf() for char[] allocated on stack memory. |
365 |
printk(KERN_WARNING "Too many words in a line.\n"); |
printk(KERN_WARNING "Too many words in a line.\n"); |
366 |
} |
} |
367 |
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368 |
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/* Prototype for ccs_io_printf(). */ |
369 |
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static void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
370 |
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__attribute__ ((format(printf, 2, 3))); |
371 |
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|
372 |
/** |
/** |
373 |
* ccs_io_printf - printf() to "struct ccs_io_buffer" structure. |
* ccs_io_printf - printf() to "struct ccs_io_buffer" structure. |
374 |
* |
* |
375 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
376 |
* @fmt: The printf()'s format string, followed by parameters. |
* @fmt: The printf()'s format string, followed by parameters. |
377 |
|
* |
378 |
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* Returns nothing. |
379 |
*/ |
*/ |
380 |
void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
static void ccs_io_printf(struct ccs_io_buffer *head, const char *fmt, ...) |
381 |
{ |
{ |
382 |
va_list args; |
va_list args; |
383 |
int len; |
size_t len; |
384 |
int pos = head->r.avail; |
size_t pos = head->r.avail; |
385 |
int size = head->readbuf_size - pos; |
int size = head->readbuf_size - pos; |
386 |
if (size <= 0) |
if (size <= 0) |
387 |
return; |
return; |
396 |
ccs_set_string(head, head->read_buf + pos); |
ccs_set_string(head, head->read_buf + pos); |
397 |
} |
} |
398 |
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399 |
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/** |
400 |
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* ccs_set_space - Put a space to "struct ccs_io_buffer" structure. |
401 |
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* |
402 |
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* @head: Pointer to "struct ccs_io_buffer". |
403 |
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* |
404 |
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* Returns nothing. |
405 |
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*/ |
406 |
static void ccs_set_space(struct ccs_io_buffer *head) |
static void ccs_set_space(struct ccs_io_buffer *head) |
407 |
{ |
{ |
408 |
ccs_set_string(head, " "); |
ccs_set_string(head, " "); |
409 |
} |
} |
410 |
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|
411 |
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/** |
412 |
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* ccs_set_lf - Put a line feed to "struct ccs_io_buffer" structure. |
413 |
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* |
414 |
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* @head: Pointer to "struct ccs_io_buffer". |
415 |
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* |
416 |
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* Returns nothing. |
417 |
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*/ |
418 |
static bool ccs_set_lf(struct ccs_io_buffer *head) |
static bool ccs_set_lf(struct ccs_io_buffer *head) |
419 |
{ |
{ |
420 |
ccs_set_string(head, "\n"); |
ccs_set_string(head, "\n"); |
422 |
} |
} |
423 |
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|
424 |
/** |
/** |
425 |
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* ccs_set_slash - Put a shash to "struct ccs_io_buffer" structure. |
426 |
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* |
427 |
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* @head: Pointer to "struct ccs_io_buffer". |
428 |
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* |
429 |
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* Returns nothing. |
430 |
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*/ |
431 |
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static void ccs_set_slash(struct ccs_io_buffer *head) |
432 |
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{ |
433 |
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ccs_set_string(head, "/"); |
434 |
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} |
435 |
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436 |
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/* List of namespaces. */ |
437 |
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LIST_HEAD(ccs_namespace_list); |
438 |
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/* True if namespace other than ccs_kernel_namespace is defined. */ |
439 |
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static bool ccs_namespace_enabled; |
440 |
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|
441 |
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/** |
442 |
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* ccs_init_policy_namespace - Initialize namespace. |
443 |
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* |
444 |
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* @ns: Pointer to "struct ccs_policy_namespace". |
445 |
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* |
446 |
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* Returns nothing. |
447 |
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*/ |
448 |
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void ccs_init_policy_namespace(struct ccs_policy_namespace *ns) |
449 |
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{ |
450 |
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unsigned int idx; |
451 |
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for (idx = 0; idx < CCS_MAX_ACL_GROUPS; idx++) |
452 |
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INIT_LIST_HEAD(&ns->acl_group[idx]); |
453 |
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for (idx = 0; idx < CCS_MAX_GROUP; idx++) |
454 |
|
INIT_LIST_HEAD(&ns->group_list[idx]); |
455 |
|
for (idx = 0; idx < CCS_MAX_POLICY; idx++) |
456 |
|
INIT_LIST_HEAD(&ns->policy_list[idx]); |
457 |
|
ns->profile_version = 20100903; |
458 |
|
ccs_namespace_enabled = !list_empty(&ccs_namespace_list); |
459 |
|
list_add_tail_rcu(&ns->namespace_list, &ccs_namespace_list); |
460 |
|
} |
461 |
|
|
462 |
|
/** |
463 |
|
* ccs_print_namespace - Print namespace header. |
464 |
|
* |
465 |
|
* @head: Pointer to "struct ccs_io_buffer". |
466 |
|
* |
467 |
|
* Returns nothing. |
468 |
|
*/ |
469 |
|
static void ccs_print_namespace(struct ccs_io_buffer *head) |
470 |
|
{ |
471 |
|
if (!ccs_namespace_enabled) |
472 |
|
return; |
473 |
|
ccs_set_string(head, |
474 |
|
container_of(head->r.ns, struct ccs_policy_namespace, |
475 |
|
namespace_list)->name); |
476 |
|
ccs_set_space(head); |
477 |
|
} |
478 |
|
|
479 |
|
/** |
480 |
* ccs_assign_profile - Create a new profile. |
* ccs_assign_profile - Create a new profile. |
481 |
* |
* |
482 |
|
* @ns: Pointer to "struct ccs_policy_namespace". |
483 |
* @profile: Profile number to create. |
* @profile: Profile number to create. |
484 |
* |
* |
485 |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
* Returns pointer to "struct ccs_profile" on success, NULL otherwise. |
486 |
*/ |
*/ |
487 |
static struct ccs_profile *ccs_assign_profile(const unsigned int profile) |
static struct ccs_profile *ccs_assign_profile(struct ccs_policy_namespace *ns, |
488 |
|
const unsigned int profile) |
489 |
{ |
{ |
490 |
struct ccs_profile *ptr; |
struct ccs_profile *ptr; |
491 |
struct ccs_profile *entry; |
struct ccs_profile *entry; |
492 |
if (profile >= CCS_MAX_PROFILES) |
if (profile >= CCS_MAX_PROFILES) |
493 |
return NULL; |
return NULL; |
494 |
ptr = ccs_profile_ptr[profile]; |
ptr = ns->profile_ptr[profile]; |
495 |
if (ptr) |
if (ptr) |
496 |
return ptr; |
return ptr; |
497 |
entry = kzalloc(sizeof(*entry), CCS_GFP_FLAGS); |
entry = kzalloc(sizeof(*entry), CCS_GFP_FLAGS); |
498 |
if (mutex_lock_interruptible(&ccs_policy_lock)) |
if (mutex_lock_interruptible(&ccs_policy_lock)) |
499 |
goto out; |
goto out; |
500 |
ptr = ccs_profile_ptr[profile]; |
ptr = ns->profile_ptr[profile]; |
501 |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
if (!ptr && ccs_memory_ok(entry, sizeof(*entry))) { |
502 |
ptr = entry; |
ptr = entry; |
503 |
ptr->default_config = CCS_CONFIG_DISABLED | |
ptr->default_config = CCS_CONFIG_DISABLED | |
504 |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
CCS_CONFIG_WANT_GRANT_LOG | CCS_CONFIG_WANT_REJECT_LOG; |
505 |
memset(ptr->config, CCS_CONFIG_USE_DEFAULT, |
memset(ptr->config, CCS_CONFIG_USE_DEFAULT, |
506 |
sizeof(ptr->config)); |
sizeof(ptr->config)); |
507 |
ptr->pref[CCS_PREF_MAX_GRANT_LOG] = |
ptr->pref[CCS_PREF_MAX_AUDIT_LOG] = |
508 |
CONFIG_CCSECURITY_MAX_GRANT_LOG; |
CONFIG_CCSECURITY_MAX_AUDIT_LOG; |
|
ptr->pref[CCS_PREF_MAX_REJECT_LOG] = |
|
|
CONFIG_CCSECURITY_MAX_REJECT_LOG; |
|
509 |
ptr->pref[CCS_PREF_MAX_LEARNING_ENTRY] = |
ptr->pref[CCS_PREF_MAX_LEARNING_ENTRY] = |
510 |
CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY; |
CONFIG_CCSECURITY_MAX_ACCEPT_ENTRY; |
511 |
mb(); /* Avoid out-of-order execution. */ |
mb(); /* Avoid out-of-order execution. */ |
512 |
ccs_profile_ptr[profile] = ptr; |
ns->profile_ptr[profile] = ptr; |
513 |
entry = NULL; |
entry = NULL; |
514 |
} |
} |
515 |
mutex_unlock(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
520 |
|
|
521 |
/** |
/** |
522 |
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
* ccs_check_profile - Check all profiles currently assigned to domains are defined. |
523 |
|
* |
524 |
|
* Returns nothing. |
525 |
*/ |
*/ |
526 |
static void ccs_check_profile(void) |
static void ccs_check_profile(void) |
527 |
{ |
{ |
528 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
529 |
const int idx = ccs_read_lock(); |
const int idx = ccs_read_lock(); |
530 |
ccs_policy_loaded = true; |
ccs_policy_loaded = true; |
531 |
|
printk(KERN_INFO "CCSecurity: 1.8.3 2011/09/29\n"); |
532 |
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
533 |
const u8 profile = domain->profile; |
const u8 profile = domain->profile; |
534 |
if (ccs_profile_ptr[profile]) |
const struct ccs_policy_namespace *ns = domain->ns; |
535 |
|
if (ns->profile_version != 20100903) |
536 |
|
printk(KERN_ERR |
537 |
|
"Profile version %u is not supported.\n", |
538 |
|
ns->profile_version); |
539 |
|
else if (!ns->profile_ptr[profile]) |
540 |
|
printk(KERN_ERR |
541 |
|
"Profile %u (used by '%s') is not defined.\n", |
542 |
|
profile, domain->domainname->name); |
543 |
|
else |
544 |
continue; |
continue; |
545 |
printk(KERN_ERR "You need to define profile %u before using it.\n", |
printk(KERN_ERR |
546 |
profile); |
"Userland tools for TOMOYO 1.8 must be installed and " |
547 |
|
"policy must be initialized.\n"); |
548 |
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
549 |
"for more information.\n"); |
"for more information.\n"); |
550 |
panic("Profile %u (used by '%s') not defined.\n", |
panic("STOP!"); |
|
profile, domain->domainname->name); |
|
551 |
} |
} |
552 |
ccs_read_unlock(idx); |
ccs_read_unlock(idx); |
|
if (ccs_profile_version != 20100903) { |
|
|
printk(KERN_ERR "You need to install userland programs for " |
|
|
"TOMOYO 1.8 and initialize policy configuration.\n"); |
|
|
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/1.8/ " |
|
|
"for more information.\n"); |
|
|
panic("Profile version %u is not supported.\n", |
|
|
ccs_profile_version); |
|
|
} |
|
|
printk(KERN_INFO "CCSecurity: 1.8.0-pre 2010/10/10\n"); |
|
553 |
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
printk(KERN_INFO "Mandatory Access Control activated.\n"); |
554 |
} |
} |
555 |
|
|
563 |
struct ccs_profile *ccs_profile(const u8 profile) |
struct ccs_profile *ccs_profile(const u8 profile) |
564 |
{ |
{ |
565 |
static struct ccs_profile ccs_null_profile; |
static struct ccs_profile ccs_null_profile; |
566 |
struct ccs_profile *ptr = ccs_profile_ptr[profile]; |
struct ccs_profile *ptr = ccs_current_namespace()-> |
567 |
|
profile_ptr[profile]; |
568 |
if (!ptr) |
if (!ptr) |
569 |
ptr = &ccs_null_profile; |
ptr = &ccs_null_profile; |
570 |
return ptr; |
return ptr; |
571 |
} |
} |
572 |
|
|
573 |
|
/** |
574 |
|
* ccs_find_yesno - Find values for specified keyword. |
575 |
|
* |
576 |
|
* @string: String to check. |
577 |
|
* @find: Name of keyword. |
578 |
|
* |
579 |
|
* Returns 1 if "@find=yes" was found, 0 if "@find=no" was found, -1 otherwise. |
580 |
|
*/ |
581 |
static s8 ccs_find_yesno(const char *string, const char *find) |
static s8 ccs_find_yesno(const char *string, const char *find) |
582 |
{ |
{ |
583 |
const char *cp = strstr(string, find); |
const char *cp = strstr(string, find); |
591 |
return -1; |
return -1; |
592 |
} |
} |
593 |
|
|
594 |
|
/** |
595 |
|
* ccs_set_uint - Set value for specified preference. |
596 |
|
* |
597 |
|
* @i: Pointer to "unsigned int". |
598 |
|
* @string: String to check. |
599 |
|
* @find: Name of keyword. |
600 |
|
* |
601 |
|
* Returns nothing. |
602 |
|
*/ |
603 |
static void ccs_set_uint(unsigned int *i, const char *string, const char *find) |
static void ccs_set_uint(unsigned int *i, const char *string, const char *find) |
604 |
{ |
{ |
605 |
const char *cp = strstr(string, find); |
const char *cp = strstr(string, find); |
607 |
sscanf(cp + strlen(find), "=%u", i); |
sscanf(cp + strlen(find), "=%u", i); |
608 |
} |
} |
609 |
|
|
610 |
|
/** |
611 |
|
* ccs_set_mode - Set mode for specified profile. |
612 |
|
* |
613 |
|
* @name: Name of functionality. |
614 |
|
* @value: Mode for @name. |
615 |
|
* @profile: Pointer to "struct ccs_profile". |
616 |
|
* |
617 |
|
* Returns 0 on success, negative value otherwise. |
618 |
|
*/ |
619 |
static int ccs_set_mode(char *name, const char *value, |
static int ccs_set_mode(char *name, const char *value, |
620 |
struct ccs_profile *profile) |
struct ccs_profile *profile) |
621 |
{ |
{ |
698 |
unsigned int i; |
unsigned int i; |
699 |
char *cp; |
char *cp; |
700 |
struct ccs_profile *profile; |
struct ccs_profile *profile; |
701 |
if (sscanf(data, "PROFILE_VERSION=%u", &ccs_profile_version) == 1) |
if (sscanf(data, "PROFILE_VERSION=%u", &head->w.ns->profile_version) |
702 |
|
== 1) |
703 |
return 0; |
return 0; |
704 |
i = simple_strtoul(data, &cp, 10); |
i = simple_strtoul(data, &cp, 10); |
705 |
if (*cp != '-') |
if (*cp != '-') |
706 |
return -EINVAL; |
return -EINVAL; |
707 |
data = cp + 1; |
data = cp + 1; |
708 |
profile = ccs_assign_profile(i); |
profile = ccs_assign_profile(head->w.ns, i); |
709 |
if (!profile) |
if (!profile) |
710 |
return -EINVAL; |
return -EINVAL; |
711 |
cp = strchr(data, '='); |
cp = strchr(data, '='); |
713 |
return -EINVAL; |
return -EINVAL; |
714 |
*cp++ = '\0'; |
*cp++ = '\0'; |
715 |
if (!strcmp(data, "COMMENT")) { |
if (!strcmp(data, "COMMENT")) { |
716 |
const struct ccs_path_info *old_comment = profile->comment; |
static DEFINE_SPINLOCK(lock); |
717 |
profile->comment = ccs_get_name(cp); |
const struct ccs_path_info *new_comment = ccs_get_name(cp); |
718 |
|
const struct ccs_path_info *old_comment; |
719 |
|
if (!new_comment) |
720 |
|
return -ENOMEM; |
721 |
|
spin_lock(&lock); |
722 |
|
old_comment = profile->comment; |
723 |
|
profile->comment = new_comment; |
724 |
|
spin_unlock(&lock); |
725 |
ccs_put_name(old_comment); |
ccs_put_name(old_comment); |
726 |
return 0; |
return 0; |
727 |
} |
} |
734 |
return ccs_set_mode(data, cp, profile); |
return ccs_set_mode(data, cp, profile); |
735 |
} |
} |
736 |
|
|
737 |
|
/** |
738 |
|
* ccs_print_config - Print mode for specified functionality. |
739 |
|
* |
740 |
|
* @head: Pointer to "struct ccs_io_buffer". |
741 |
|
* @config: Mode for that functionality. |
742 |
|
* |
743 |
|
* Returns nothing. |
744 |
|
* |
745 |
|
* Caller prints functionality's name. |
746 |
|
*/ |
747 |
static void ccs_print_config(struct ccs_io_buffer *head, const u8 config) |
static void ccs_print_config(struct ccs_io_buffer *head, const u8 config) |
748 |
{ |
{ |
749 |
ccs_io_printf(head, "={ mode=%s grant_log=%s reject_log=%s }\n", |
ccs_io_printf(head, "={ mode=%s grant_log=%s reject_log=%s }\n", |
756 |
* ccs_read_profile - Read profile table. |
* ccs_read_profile - Read profile table. |
757 |
* |
* |
758 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
759 |
|
* |
760 |
|
* Returns nothing. |
761 |
*/ |
*/ |
762 |
static void ccs_read_profile(struct ccs_io_buffer *head) |
static void ccs_read_profile(struct ccs_io_buffer *head) |
763 |
{ |
{ |
764 |
u8 index; |
u8 index; |
765 |
|
struct ccs_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), |
766 |
|
namespace_list); |
767 |
const struct ccs_profile *profile; |
const struct ccs_profile *profile; |
768 |
|
if (head->r.eof) |
769 |
|
return; |
770 |
next: |
next: |
771 |
index = head->r.index; |
index = head->r.index; |
772 |
profile = ccs_profile_ptr[index]; |
profile = ns->profile_ptr[index]; |
773 |
switch (head->r.step) { |
switch (head->r.step) { |
774 |
case 0: |
case 0: |
775 |
ccs_io_printf(head, "PROFILE_VERSION=%s\n", "20100903"); |
ccs_print_namespace(head); |
776 |
|
ccs_io_printf(head, "PROFILE_VERSION=%u\n", |
777 |
|
ns->profile_version); |
778 |
head->r.step++; |
head->r.step++; |
779 |
break; |
break; |
780 |
case 1: |
case 1: |
781 |
for ( ; head->r.index < CCS_MAX_PROFILES; |
for ( ; head->r.index < CCS_MAX_PROFILES; head->r.index++) |
782 |
head->r.index++) |
if (ns->profile_ptr[head->r.index]) |
|
if (ccs_profile_ptr[head->r.index]) |
|
783 |
break; |
break; |
784 |
if (head->r.index == CCS_MAX_PROFILES) |
if (head->r.index == CCS_MAX_PROFILES) { |
785 |
|
head->r.eof = true; |
786 |
return; |
return; |
787 |
|
} |
788 |
head->r.step++; |
head->r.step++; |
789 |
break; |
break; |
790 |
case 2: |
case 2: |
791 |
{ |
{ |
792 |
u8 i; |
u8 i; |
793 |
const struct ccs_path_info *comment = profile->comment; |
const struct ccs_path_info *comment = profile->comment; |
794 |
|
ccs_print_namespace(head); |
795 |
ccs_io_printf(head, "%u-COMMENT=", index); |
ccs_io_printf(head, "%u-COMMENT=", index); |
796 |
ccs_set_string(head, comment ? comment->name : ""); |
ccs_set_string(head, comment ? comment->name : ""); |
797 |
ccs_set_lf(head); |
ccs_set_lf(head); |
798 |
|
ccs_print_namespace(head); |
799 |
ccs_io_printf(head, "%u-PREFERENCE={ ", index); |
ccs_io_printf(head, "%u-PREFERENCE={ ", index); |
800 |
for (i = 0; i < CCS_MAX_PREF; i++) |
for (i = 0; i < CCS_MAX_PREF; i++) |
801 |
ccs_io_printf(head, "%s=%u ", |
ccs_io_printf(head, "%s=%u ", |
802 |
ccs_pref_keywords[i], |
ccs_pref_keywords[i], |
803 |
profile->pref[i]); |
profile->pref[i]); |
804 |
ccs_set_string(head, " }\n"); |
ccs_set_string(head, "}\n"); |
805 |
head->r.step++; |
head->r.step++; |
806 |
} |
} |
807 |
break; |
break; |
808 |
case 3: |
case 3: |
809 |
{ |
{ |
810 |
|
ccs_print_namespace(head); |
811 |
ccs_io_printf(head, "%u-%s", index, "CONFIG"); |
ccs_io_printf(head, "%u-%s", index, "CONFIG"); |
812 |
ccs_print_config(head, profile->default_config); |
ccs_print_config(head, profile->default_config); |
813 |
head->r.bit = 0; |
head->r.bit = 0; |
821 |
const u8 config = profile->config[i]; |
const u8 config = profile->config[i]; |
822 |
if (config == CCS_CONFIG_USE_DEFAULT) |
if (config == CCS_CONFIG_USE_DEFAULT) |
823 |
continue; |
continue; |
824 |
|
ccs_print_namespace(head); |
825 |
if (i < CCS_MAX_MAC_INDEX) |
if (i < CCS_MAX_MAC_INDEX) |
826 |
ccs_io_printf(head, "%u-CONFIG::%s::%s", index, |
ccs_io_printf(head, "%u-CONFIG::%s::%s", index, |
827 |
ccs_category_keywords |
ccs_category_keywords |
845 |
goto next; |
goto next; |
846 |
} |
} |
847 |
|
|
848 |
|
/** |
849 |
|
* ccs_same_manager - Check for duplicated "struct ccs_manager" entry. |
850 |
|
* |
851 |
|
* @a: Pointer to "struct ccs_acl_head". |
852 |
|
* @b: Pointer to "struct ccs_acl_head". |
853 |
|
* |
854 |
|
* Returns true if @a == @b, false otherwise. |
855 |
|
*/ |
856 |
static bool ccs_same_manager(const struct ccs_acl_head *a, |
static bool ccs_same_manager(const struct ccs_acl_head *a, |
857 |
const struct ccs_acl_head *b) |
const struct ccs_acl_head *b) |
858 |
{ |
{ |
868 |
* |
* |
869 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
870 |
*/ |
*/ |
871 |
static int ccs_update_manager_entry(const char *manager, const bool is_delete) |
static inline int ccs_update_manager_entry(const char *manager, |
872 |
|
const bool is_delete) |
873 |
{ |
{ |
874 |
struct ccs_manager e = { }; |
struct ccs_manager e = { }; |
875 |
|
struct ccs_acl_param param = { |
876 |
|
/* .ns = &ccs_kernel_namespace, */ |
877 |
|
.is_delete = is_delete, |
878 |
|
.list = &ccs_kernel_namespace.policy_list[CCS_ID_MANAGER], |
879 |
|
}; |
880 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
881 |
if (ccs_domain_def(manager)) { |
if (ccs_domain_def(manager)) { |
882 |
if (!ccs_correct_domain(manager)) |
if (!ccs_correct_domain(manager)) |
887 |
return -EINVAL; |
return -EINVAL; |
888 |
} |
} |
889 |
e.manager = ccs_get_name(manager); |
e.manager = ccs_get_name(manager); |
890 |
if (!e.manager) |
if (e.manager) { |
891 |
return error; |
error = ccs_update_policy(&e.head, sizeof(e), ¶m, |
892 |
error = ccs_update_policy(&e.head, sizeof(e), is_delete, |
ccs_same_manager); |
893 |
&ccs_policy_list[CCS_ID_MANAGER], |
ccs_put_name(e.manager); |
894 |
ccs_same_manager); |
} |
|
ccs_put_name(e.manager); |
|
895 |
return error; |
return error; |
896 |
} |
} |
897 |
|
|
904 |
*/ |
*/ |
905 |
static int ccs_write_manager(struct ccs_io_buffer *head) |
static int ccs_write_manager(struct ccs_io_buffer *head) |
906 |
{ |
{ |
907 |
char *data = head->write_buf; |
const char *data = head->write_buf; |
|
bool is_delete = ccs_str_starts(&data, "delete "); |
|
908 |
if (!strcmp(data, "manage_by_non_root")) { |
if (!strcmp(data, "manage_by_non_root")) { |
909 |
ccs_manage_by_non_root = !is_delete; |
ccs_manage_by_non_root = !head->w.is_delete; |
910 |
return 0; |
return 0; |
911 |
} |
} |
912 |
return ccs_update_manager_entry(data, is_delete); |
return ccs_update_manager_entry(data, head->w.is_delete); |
913 |
} |
} |
914 |
|
|
915 |
/** |
/** |
917 |
* |
* |
918 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
919 |
* |
* |
920 |
|
* Returns nothing. |
921 |
|
* |
922 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
923 |
*/ |
*/ |
924 |
static void ccs_read_manager(struct ccs_io_buffer *head) |
static void ccs_read_manager(struct ccs_io_buffer *head) |
925 |
{ |
{ |
926 |
if (head->r.eof) |
if (head->r.eof) |
927 |
return; |
return; |
928 |
list_for_each_cookie(head->r.acl, &ccs_policy_list[CCS_ID_MANAGER]) { |
list_for_each_cookie(head->r.acl, &ccs_kernel_namespace. |
929 |
|
policy_list[CCS_ID_MANAGER]) { |
930 |
struct ccs_manager *ptr = |
struct ccs_manager *ptr = |
931 |
list_entry(head->r.acl, typeof(*ptr), head.list); |
list_entry(head->r.acl, typeof(*ptr), head.list); |
932 |
if (ptr->head.is_deleted) |
if (ptr->head.is_deleted) |
962 |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
if (!ccs_manage_by_non_root && (current_uid() || current_euid())) |
963 |
return false; |
return false; |
964 |
exe = ccs_get_exe(); |
exe = ccs_get_exe(); |
965 |
list_for_each_entry_srcu(ptr, &ccs_policy_list[CCS_ID_MANAGER], |
list_for_each_entry_srcu(ptr, &ccs_kernel_namespace. |
966 |
head.list, &ccs_ss) { |
policy_list[CCS_ID_MANAGER], head.list, |
967 |
|
&ccs_ss) { |
968 |
if (ptr->head.is_deleted) |
if (ptr->head.is_deleted) |
969 |
continue; |
continue; |
970 |
if (ptr->is_domain) { |
if (ptr->is_domain) { |
993 |
} |
} |
994 |
|
|
995 |
/** |
/** |
996 |
* ccs_select_one - Parse select command. |
* ccs_select_domain - Parse select command. |
997 |
* |
* |
998 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
999 |
* @data: String to parse. |
* @data: String to parse. |
1002 |
* |
* |
1003 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1004 |
*/ |
*/ |
1005 |
static bool ccs_select_one(struct ccs_io_buffer *head, const char *data) |
static bool ccs_select_domain(struct ccs_io_buffer *head, const char *data) |
1006 |
{ |
{ |
1007 |
unsigned int pid; |
unsigned int pid; |
1008 |
struct ccs_domain_info *domain = NULL; |
struct ccs_domain_info *domain = NULL; |
1009 |
bool global_pid = false; |
bool global_pid = false; |
1010 |
if (!strcmp(data, "execute")) { |
if (strncmp(data, "select ", 7)) |
1011 |
head->r.print_execute_only = true; |
return false; |
1012 |
return true; |
data += 7; |
|
} |
|
1013 |
if (sscanf(data, "pid=%u", &pid) == 1 || |
if (sscanf(data, "pid=%u", &pid) == 1 || |
1014 |
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) { |
1015 |
struct task_struct *p; |
struct task_struct *p; |
1027 |
domain = ccs_task_domain(p); |
domain = ccs_task_domain(p); |
1028 |
ccs_tasklist_unlock(); |
ccs_tasklist_unlock(); |
1029 |
} else if (!strncmp(data, "domain=", 7)) { |
} else if (!strncmp(data, "domain=", 7)) { |
1030 |
if (ccs_domain_def(data + 7)) |
if (*(data + 7) == '<') |
1031 |
domain = ccs_find_domain(data + 7); |
domain = ccs_find_domain(data + 7); |
1032 |
} else |
} else |
1033 |
return false; |
return false; |
1047 |
return true; |
return true; |
1048 |
} |
} |
1049 |
|
|
1050 |
|
/** |
1051 |
|
* ccs_same_handler_acl - Check for duplicated "struct ccs_handler_acl" entry. |
1052 |
|
* |
1053 |
|
* @a: Pointer to "struct ccs_acl_info". |
1054 |
|
* @b: Pointer to "struct ccs_acl_info". |
1055 |
|
* |
1056 |
|
* Returns true if @a == @b, false otherwise. |
1057 |
|
*/ |
1058 |
static bool ccs_same_handler_acl(const struct ccs_acl_info *a, |
static bool ccs_same_handler_acl(const struct ccs_acl_info *a, |
1059 |
const struct ccs_acl_info *b) |
const struct ccs_acl_info *b) |
1060 |
{ |
{ |
1063 |
return p1->handler == p2->handler; |
return p1->handler == p2->handler; |
1064 |
} |
} |
1065 |
|
|
1066 |
|
/** |
1067 |
|
* ccs_same_task_acl - Check for duplicated "struct ccs_task_acl" entry. |
1068 |
|
* |
1069 |
|
* @a: Pointer to "struct ccs_acl_info". |
1070 |
|
* @b: Pointer to "struct ccs_acl_info". |
1071 |
|
* |
1072 |
|
* Returns true if @a == @b, false otherwise. |
1073 |
|
*/ |
1074 |
static bool ccs_same_task_acl(const struct ccs_acl_info *a, |
static bool ccs_same_task_acl(const struct ccs_acl_info *a, |
1075 |
const struct ccs_acl_info *b) |
const struct ccs_acl_info *b) |
1076 |
{ |
{ |
1085 |
* @param: Pointer to "struct ccs_acl_param". |
* @param: Pointer to "struct ccs_acl_param". |
1086 |
* |
* |
1087 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1088 |
|
* |
1089 |
|
* Caller holds ccs_read_lock(). |
1090 |
*/ |
*/ |
1091 |
static int ccs_write_task(struct ccs_acl_param *param) |
static int ccs_write_task(struct ccs_acl_param *param) |
1092 |
{ |
{ |
1132 |
return error; |
return error; |
1133 |
} |
} |
1134 |
|
|
1135 |
static int ccs_write_domain2(char *data, struct ccs_domain_info *domain, |
/** |
1136 |
|
* ccs_write_domain2 - Write domain policy. |
1137 |
|
* |
1138 |
|
* @ns: Pointer to "struct ccs_policy_namespace". |
1139 |
|
* @list: Pointer to "struct list_head". |
1140 |
|
* @data: Policy to be interpreted. |
1141 |
|
* @is_delete: True if it is a delete request. |
1142 |
|
* |
1143 |
|
* Returns 0 on success, negative value otherwise. |
1144 |
|
* |
1145 |
|
* Caller holds ccs_read_lock(). |
1146 |
|
*/ |
1147 |
|
static int ccs_write_domain2(struct ccs_policy_namespace *ns, |
1148 |
|
struct list_head *list, char *data, |
1149 |
const bool is_delete) |
const bool is_delete) |
1150 |
{ |
{ |
1151 |
struct ccs_acl_param param = { |
struct ccs_acl_param param = { |
1152 |
|
.ns = ns, |
1153 |
|
.list = list, |
1154 |
.data = data, |
.data = data, |
|
.domain = domain, |
|
1155 |
.is_delete = is_delete, |
.is_delete = is_delete, |
1156 |
}; |
}; |
1157 |
static const struct { |
static const struct { |
1163 |
{ "network unix ", ccs_write_unix_network }, |
{ "network unix ", ccs_write_unix_network }, |
1164 |
{ "misc ", ccs_write_misc }, |
{ "misc ", ccs_write_misc }, |
1165 |
{ "capability ", ccs_write_capability }, |
{ "capability ", ccs_write_capability }, |
1166 |
{ "ipc ", ccs_write_ipc }, |
{ "ipc signal ", ccs_write_ipc }, |
1167 |
{ "task ", ccs_write_task }, |
{ "task ", ccs_write_task }, |
1168 |
}; |
}; |
1169 |
u8 i; |
u8 i; |
1170 |
for (i = 0; i < 7; i++) { |
for (i = 0; i < ARRAY_SIZE(ccs_callback); i++) { |
1171 |
if (!ccs_str_starts(¶m.data, ccs_callback[i].keyword)) |
if (!ccs_str_starts(¶m.data, ccs_callback[i].keyword)) |
1172 |
continue; |
continue; |
1173 |
return ccs_callback[i].write(¶m); |
return ccs_callback[i].write(¶m); |
1175 |
return -EINVAL; |
return -EINVAL; |
1176 |
} |
} |
1177 |
|
|
1178 |
|
/** |
1179 |
|
* ccs_delete_domain - Delete a domain. |
1180 |
|
* |
1181 |
|
* @domainname: The name of domain. |
1182 |
|
* |
1183 |
|
* Returns 0. |
1184 |
|
*/ |
1185 |
|
static int ccs_delete_domain(char *domainname) |
1186 |
|
{ |
1187 |
|
struct ccs_domain_info *domain; |
1188 |
|
struct ccs_path_info name; |
1189 |
|
name.name = domainname; |
1190 |
|
ccs_fill_path_info(&name); |
1191 |
|
if (mutex_lock_interruptible(&ccs_policy_lock)) |
1192 |
|
return 0; |
1193 |
|
/* Is there an active domain? */ |
1194 |
|
list_for_each_entry_srcu(domain, &ccs_domain_list, list, &ccs_ss) { |
1195 |
|
/* Never delete ccs_kernel_domain. */ |
1196 |
|
if (domain == &ccs_kernel_domain) |
1197 |
|
continue; |
1198 |
|
if (domain->is_deleted || |
1199 |
|
ccs_pathcmp(domain->domainname, &name)) |
1200 |
|
continue; |
1201 |
|
domain->is_deleted = true; |
1202 |
|
break; |
1203 |
|
} |
1204 |
|
mutex_unlock(&ccs_policy_lock); |
1205 |
|
return 0; |
1206 |
|
} |
1207 |
|
|
1208 |
|
/* String table for domain flags. */ |
1209 |
const char * const ccs_dif[CCS_MAX_DOMAIN_INFO_FLAGS] = { |
const char * const ccs_dif[CCS_MAX_DOMAIN_INFO_FLAGS] = { |
1210 |
[CCS_DIF_QUOTA_WARNED] = "quota_exceeded\n", |
[CCS_DIF_QUOTA_WARNED] = "quota_exceeded\n", |
1211 |
[CCS_DIF_TRANSITION_FAILED] = "transition_failed\n", |
[CCS_DIF_TRANSITION_FAILED] = "transition_failed\n", |
1217 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1218 |
* |
* |
1219 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
1220 |
|
* |
1221 |
|
* Caller holds ccs_read_lock(). |
1222 |
*/ |
*/ |
1223 |
static int ccs_write_domain(struct ccs_io_buffer *head) |
static int ccs_write_domain(struct ccs_io_buffer *head) |
1224 |
{ |
{ |
1225 |
char *data = head->write_buf; |
char *data = head->write_buf; |
1226 |
|
struct ccs_policy_namespace *ns; |
1227 |
struct ccs_domain_info *domain = head->w.domain; |
struct ccs_domain_info *domain = head->w.domain; |
1228 |
bool is_delete = false; |
const bool is_delete = head->w.is_delete; |
1229 |
bool is_select = false; |
const bool is_select = !is_delete && ccs_str_starts(&data, "select "); |
1230 |
unsigned int profile; |
unsigned int profile; |
1231 |
if (ccs_str_starts(&data, "delete ")) |
if (*data == '<') { |
|
is_delete = true; |
|
|
else if (ccs_str_starts(&data, "select ")) |
|
|
is_select = true; |
|
|
if (is_select && ccs_select_one(head, data)) |
|
|
return 0; |
|
|
/* Don't allow updating policies by non manager programs. */ |
|
|
if (!ccs_manager()) |
|
|
return -EPERM; |
|
|
if (ccs_domain_def(data)) { |
|
1232 |
domain = NULL; |
domain = NULL; |
1233 |
if (is_delete) |
if (is_delete) |
1234 |
ccs_delete_domain(data); |
ccs_delete_domain(data); |
1235 |
else if (is_select) |
else if (is_select) |
1236 |
domain = ccs_find_domain(data); |
domain = ccs_find_domain(data); |
1237 |
else |
else |
1238 |
domain = ccs_assign_domain(data, 0, 0, false); |
domain = ccs_assign_domain(data, false); |
1239 |
head->w.domain = domain; |
head->w.domain = domain; |
1240 |
return 0; |
return 0; |
1241 |
} |
} |
1242 |
if (!domain) |
if (!domain) |
1243 |
return -EINVAL; |
return -EINVAL; |
1244 |
|
ns = domain->ns; |
1245 |
if (sscanf(data, "use_profile %u\n", &profile) == 1 |
if (sscanf(data, "use_profile %u\n", &profile) == 1 |
1246 |
&& profile < CCS_MAX_PROFILES) { |
&& profile < CCS_MAX_PROFILES) { |
1247 |
if (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile]) |
if (!ccs_policy_loaded || ns->profile_ptr[(u8) profile]) |
1248 |
domain->profile = (u8) profile; |
if (!is_delete) |
1249 |
|
domain->profile = (u8) profile; |
1250 |
return 0; |
return 0; |
1251 |
} |
} |
1252 |
if (sscanf(data, "use_group %u\n", &profile) == 1 |
if (sscanf(data, "use_group %u\n", &profile) == 1 |
1253 |
&& profile < CCS_MAX_ACL_GROUPS) { |
&& profile < CCS_MAX_ACL_GROUPS) { |
1254 |
domain->group = (u8) profile; |
if (!is_delete) |
1255 |
|
domain->group = (u8) profile; |
1256 |
return 0; |
return 0; |
1257 |
} |
} |
1258 |
for (profile = 0; profile < CCS_MAX_DOMAIN_INFO_FLAGS; profile++) { |
for (profile = 0; profile < CCS_MAX_DOMAIN_INFO_FLAGS; profile++) { |
1262 |
domain->flags[profile] = !is_delete; |
domain->flags[profile] = !is_delete; |
1263 |
return 0; |
return 0; |
1264 |
} |
} |
1265 |
return ccs_write_domain2(data, domain, is_delete); |
return ccs_write_domain2(ns, &domain->acl_info_list, data, is_delete); |
1266 |
} |
} |
1267 |
|
|
1268 |
/** |
/** |
1270 |
* |
* |
1271 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1272 |
* @ptr: Pointer to "struct ccs_name_union". |
* @ptr: Pointer to "struct ccs_name_union". |
1273 |
|
* |
1274 |
|
* Returns nothing. |
1275 |
*/ |
*/ |
1276 |
static void ccs_print_name_union(struct ccs_io_buffer *head, |
static void ccs_print_name_union(struct ccs_io_buffer *head, |
1277 |
const struct ccs_name_union *ptr) |
const struct ccs_name_union *ptr) |
1278 |
{ |
{ |
1279 |
const bool cond = head->r.print_cond_part; |
ccs_set_space(head); |
1280 |
if (!cond) |
if (ptr->group) { |
|
ccs_set_space(head); |
|
|
if (ptr->is_group) { |
|
1281 |
ccs_set_string(head, "@"); |
ccs_set_string(head, "@"); |
1282 |
ccs_set_string(head, ptr->group->group_name->name); |
ccs_set_string(head, ptr->group->group_name->name); |
1283 |
} else { |
} else { |
|
if (cond) |
|
|
ccs_set_string(head, "\""); |
|
1284 |
ccs_set_string(head, ptr->filename->name); |
ccs_set_string(head, ptr->filename->name); |
|
if (cond) |
|
|
ccs_set_string(head, "\""); |
|
1285 |
} |
} |
1286 |
} |
} |
1287 |
|
|
1288 |
/** |
/** |
1289 |
* ccs_print_number_union - Print a ccs_number_union. |
* ccs_print_name_union_quoted - Print a ccs_name_union with a quote. |
1290 |
|
* |
1291 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1292 |
|
* @ptr: Pointer to "struct ccs_name_union". |
1293 |
|
* |
1294 |
|
* Returns nothing. |
1295 |
|
*/ |
1296 |
|
static void ccs_print_name_union_quoted(struct ccs_io_buffer *head, |
1297 |
|
const struct ccs_name_union *ptr) |
1298 |
|
{ |
1299 |
|
if (ptr->group) { |
1300 |
|
ccs_set_string(head, "@"); |
1301 |
|
ccs_set_string(head, ptr->group->group_name->name); |
1302 |
|
} else { |
1303 |
|
ccs_set_string(head, "\""); |
1304 |
|
ccs_set_string(head, ptr->filename->name); |
1305 |
|
ccs_set_string(head, "\""); |
1306 |
|
} |
1307 |
|
} |
1308 |
|
|
1309 |
|
/** |
1310 |
|
* ccs_print_number_union_nospace - Print a ccs_number_union without a space. |
1311 |
* |
* |
1312 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1313 |
* @ptr: Pointer to "struct ccs_number_union". |
* @ptr: Pointer to "struct ccs_number_union". |
1314 |
|
* |
1315 |
|
* Returns nothing. |
1316 |
*/ |
*/ |
1317 |
static void ccs_print_number_union(struct ccs_io_buffer *head, |
static void ccs_print_number_union_nospace(struct ccs_io_buffer *head, |
1318 |
const struct ccs_number_union *ptr) |
const struct ccs_number_union *ptr) |
1319 |
{ |
{ |
1320 |
if (!head->r.print_cond_part) |
if (ptr->group) { |
|
ccs_set_space(head); |
|
|
if (ptr->is_group) { |
|
1321 |
ccs_set_string(head, "@"); |
ccs_set_string(head, "@"); |
1322 |
ccs_set_string(head, ptr->group->group_name->name); |
ccs_set_string(head, ptr->group->group_name->name); |
1323 |
} else { |
} else { |
1354 |
} |
} |
1355 |
|
|
1356 |
/** |
/** |
1357 |
|
* ccs_print_number_union - Print a ccs_number_union. |
1358 |
|
* |
1359 |
|
* @head: Pointer to "struct ccs_io_buffer". |
1360 |
|
* @ptr: Pointer to "struct ccs_number_union". |
1361 |
|
* |
1362 |
|
* Returns nothing. |
1363 |
|
*/ |
1364 |
|
static void ccs_print_number_union(struct ccs_io_buffer *head, |
1365 |
|
const struct ccs_number_union *ptr) |
1366 |
|
{ |
1367 |
|
ccs_set_space(head); |
1368 |
|
ccs_print_number_union_nospace(head, ptr); |
1369 |
|
} |
1370 |
|
|
1371 |
|
/** |
1372 |
* ccs_print_condition - Print condition part. |
* ccs_print_condition - Print condition part. |
1373 |
* |
* |
1374 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1383 |
case 0: |
case 0: |
1384 |
head->r.cond_index = 0; |
head->r.cond_index = 0; |
1385 |
head->r.cond_step++; |
head->r.cond_step++; |
1386 |
|
if (cond->transit && cond->exec_transit) { |
1387 |
|
ccs_set_space(head); |
1388 |
|
ccs_set_string(head, cond->transit->name); |
1389 |
|
} |
1390 |
/* fall through */ |
/* fall through */ |
1391 |
case 1: |
case 1: |
1392 |
{ |
{ |
1439 |
switch (left) { |
switch (left) { |
1440 |
case CCS_ARGV_ENTRY: |
case CCS_ARGV_ENTRY: |
1441 |
ccs_io_printf(head, |
ccs_io_printf(head, |
1442 |
"exec.argv[%u]%s\"%s\"", |
"exec.argv[%lu]%s=\"", |
1443 |
argv->index, |
argv->index, |
1444 |
argv->is_not ? |
argv->is_not ? "!" : ""); |
1445 |
"!=" : "=", |
ccs_set_string(head, |
1446 |
argv->value->name); |
argv->value->name); |
1447 |
|
ccs_set_string(head, "\""); |
1448 |
argv++; |
argv++; |
1449 |
continue; |
continue; |
1450 |
case CCS_ENVP_ENTRY: |
case CCS_ENVP_ENTRY: |
1451 |
ccs_io_printf(head, |
ccs_set_string(head, "exec.envp[\""); |
1452 |
"exec.envp[\"%s\"]%s", |
ccs_set_string(head, envp->name->name); |
1453 |
envp->name->name, |
ccs_io_printf(head, "\"]%s=", |
1454 |
envp->is_not ? |
envp->is_not ? "!" : ""); |
|
"!=" : "="); |
|
1455 |
if (envp->value) { |
if (envp->value) { |
1456 |
ccs_set_string(head, "\""); |
ccs_set_string(head, "\""); |
1457 |
ccs_set_string(head, envp-> |
ccs_set_string(head, envp-> |
1463 |
envp++; |
envp++; |
1464 |
continue; |
continue; |
1465 |
case CCS_NUMBER_UNION: |
case CCS_NUMBER_UNION: |
1466 |
ccs_print_number_union(head, |
ccs_print_number_union_nospace |
1467 |
numbers_p++); |
(head, numbers_p++); |
1468 |
break; |
break; |
1469 |
default: |
default: |
1470 |
ccs_set_string(head, |
ccs_set_string(head, |
1474 |
ccs_set_string(head, match ? "=" : "!="); |
ccs_set_string(head, match ? "=" : "!="); |
1475 |
switch (right) { |
switch (right) { |
1476 |
case CCS_NAME_UNION: |
case CCS_NAME_UNION: |
1477 |
ccs_print_name_union(head, names_p++); |
ccs_print_name_union_quoted |
1478 |
|
(head, names_p++); |
1479 |
break; |
break; |
1480 |
case CCS_NUMBER_UNION: |
case CCS_NUMBER_UNION: |
1481 |
ccs_print_number_union(head, |
ccs_print_number_union_nospace |
1482 |
numbers_p++); |
(head, numbers_p++); |
1483 |
break; |
break; |
1484 |
default: |
default: |
1485 |
ccs_set_string(head, |
ccs_set_string(head, |
1496 |
head->r.cond_step++; |
head->r.cond_step++; |
1497 |
/* fall through */ |
/* fall through */ |
1498 |
case 3: |
case 3: |
1499 |
if (cond->grant_log) |
if (cond->grant_log != CCS_GRANTLOG_AUTO) |
1500 |
ccs_io_printf(head, " grant_log=%s", |
ccs_io_printf(head, " grant_log=%s", |
1501 |
ccs_yesno(cond->grant_log == 2)); |
ccs_yesno(cond->grant_log == |
1502 |
if (cond->transit) { |
CCS_GRANTLOG_YES)); |
1503 |
ccs_set_string(head, " auto_domain_transitition=\""); |
if (cond->transit && !cond->exec_transit) { |
1504 |
ccs_set_string(head, cond->transit->name); |
const char *name = cond->transit->name; |
1505 |
|
ccs_set_string(head, " auto_domain_transition=\""); |
1506 |
|
ccs_set_string(head, name); |
1507 |
ccs_set_string(head, "\""); |
ccs_set_string(head, "\""); |
1508 |
} |
} |
1509 |
ccs_set_lf(head); |
ccs_set_lf(head); |
1513 |
} |
} |
1514 |
|
|
1515 |
/** |
/** |
1516 |
* ccs_fns - Find next set bit. |
* ccs_set_group - Print "acl_group " header keyword and category name. |
1517 |
* |
* |
1518 |
* @perm: 8 bits value. |
* @head: Pointer to "struct ccs_io_buffer". |
1519 |
* @bit: First bit to find. |
* @category: Category name. |
1520 |
* |
* |
1521 |
* Returns next set bit on success, 8 otherwise. |
* Returns nothing. |
1522 |
*/ |
*/ |
1523 |
static u8 ccs_fns(const u8 perm, u8 bit) |
static void ccs_set_group(struct ccs_io_buffer *head, const char *category) |
|
{ |
|
|
for ( ; bit < 8; bit++) |
|
|
if (perm & (1 << bit)) |
|
|
break; |
|
|
return bit; |
|
|
} |
|
|
|
|
|
static void ccs_set_group(struct ccs_io_buffer *head) |
|
1524 |
{ |
{ |
1525 |
if (head->type == CCS_EXCEPTIONPOLICY) |
if (head->type == CCS_EXCEPTIONPOLICY) { |
1526 |
ccs_io_printf(head, "acl_group %u ", head->r.group_index); |
ccs_print_namespace(head); |
1527 |
|
ccs_io_printf(head, "acl_group %u ", head->r.acl_group_index); |
1528 |
|
} |
1529 |
|
ccs_set_string(head, category); |
1530 |
} |
} |
1531 |
|
|
1532 |
/** |
/** |
1541 |
const struct ccs_acl_info *acl) |
const struct ccs_acl_info *acl) |
1542 |
{ |
{ |
1543 |
const u8 acl_type = acl->type; |
const u8 acl_type = acl->type; |
1544 |
|
const bool may_trigger_transition = acl->cond && acl->cond->transit; |
1545 |
|
bool first = true; |
1546 |
u8 bit; |
u8 bit; |
1547 |
if (head->r.print_cond_part) |
if (head->r.print_cond_part) |
1548 |
goto print_cond_part; |
goto print_cond_part; |
1549 |
if (acl->is_deleted) |
if (acl->is_deleted) |
1550 |
return true; |
return true; |
|
next: |
|
|
bit = head->r.bit; |
|
1551 |
if (!ccs_flush(head)) |
if (!ccs_flush(head)) |
1552 |
return false; |
return false; |
1553 |
else if (acl_type == CCS_TYPE_PATH_ACL) { |
else if (acl_type == CCS_TYPE_PATH_ACL) { |
1554 |
struct ccs_path_acl *ptr |
struct ccs_path_acl *ptr |
1555 |
= container_of(acl, typeof(*ptr), head); |
= container_of(acl, typeof(*ptr), head); |
1556 |
const u16 perm = ptr->perm; |
const u16 perm = ptr->perm; |
1557 |
for ( ; bit < CCS_MAX_PATH_OPERATION; bit++) { |
for (bit = 0; bit < CCS_MAX_PATH_OPERATION; bit++) { |
1558 |
if (!(perm & (1 << bit))) |
if (!(perm & (1 << bit))) |
1559 |
continue; |
continue; |
1560 |
if (head->r.print_execute_only && |
if (head->r.print_transition_related_only && |
1561 |
bit != CCS_TYPE_EXECUTE |
bit != CCS_TYPE_EXECUTE && !may_trigger_transition) |
|
/* && bit != CCS_TYPE_TRANSIT */) |
|
1562 |
continue; |
continue; |
1563 |
break; |
if (first) { |
1564 |
|
ccs_set_group(head, "file "); |
1565 |
|
first = false; |
1566 |
|
} else { |
1567 |
|
ccs_set_slash(head); |
1568 |
|
} |
1569 |
|
ccs_set_string(head, ccs_path_keyword[bit]); |
1570 |
} |
} |
1571 |
if (bit >= CCS_MAX_PATH_OPERATION) |
if (first) |
1572 |
goto done; |
return true; |
|
ccs_set_group(head); |
|
|
ccs_set_string(head, "file "); |
|
|
ccs_set_string(head, ccs_path_keyword[bit]); |
|
1573 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1574 |
} else if (acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER || |
} else if (acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER || |
1575 |
acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
acl_type == CCS_TYPE_DENIED_EXECUTE_HANDLER) { |
1576 |
struct ccs_handler_acl *ptr |
struct ccs_handler_acl *ptr |
1577 |
= container_of(acl, typeof(*ptr), head); |
= container_of(acl, typeof(*ptr), head); |
1578 |
ccs_set_group(head); |
ccs_set_group(head, "task "); |
|
ccs_set_string(head, "task "); |
|
1579 |
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER |
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_EXECUTE_HANDLER |
1580 |
? "auto_execute_handler " : |
? "auto_execute_handler " : |
1581 |
"denied_execute_handler "); |
"denied_execute_handler "); |
1584 |
acl_type == CCS_TYPE_MANUAL_TASK_ACL) { |
acl_type == CCS_TYPE_MANUAL_TASK_ACL) { |
1585 |
struct ccs_task_acl *ptr = |
struct ccs_task_acl *ptr = |
1586 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1587 |
ccs_set_group(head); |
ccs_set_group(head, "task "); |
|
ccs_set_string(head, "task "); |
|
1588 |
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_TASK_ACL ? |
ccs_set_string(head, acl_type == CCS_TYPE_AUTO_TASK_ACL ? |
1589 |
"auto_domain_transition " : |
"auto_domain_transition " : |
1590 |
"manual_domain_transition "); |
"manual_domain_transition "); |
1591 |
ccs_set_string(head, ptr->domainname->name); |
ccs_set_string(head, ptr->domainname->name); |
1592 |
} else if (head->r.print_execute_only) { |
} else if (head->r.print_transition_related_only && |
1593 |
|
!may_trigger_transition) { |
1594 |
return true; |
return true; |
1595 |
} else if (acl_type == CCS_TYPE_MKDEV_ACL) { |
} else if (acl_type == CCS_TYPE_MKDEV_ACL) { |
1596 |
struct ccs_mkdev_acl *ptr = |
struct ccs_mkdev_acl *ptr = |
1597 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1598 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1599 |
if (bit >= CCS_MAX_MKDEV_OPERATION) |
for (bit = 0; bit < CCS_MAX_MKDEV_OPERATION; bit++) { |
1600 |
goto done; |
if (!(perm & (1 << bit))) |
1601 |
ccs_set_group(head); |
continue; |
1602 |
ccs_set_string(head, "file "); |
if (first) { |
1603 |
ccs_set_string(head, ccs_mac_keywords[ccs_pnnn2mac[bit]]); |
ccs_set_group(head, "file "); |
1604 |
|
first = false; |
1605 |
|
} else { |
1606 |
|
ccs_set_slash(head); |
1607 |
|
} |
1608 |
|
ccs_set_string(head, ccs_mac_keywords |
1609 |
|
[ccs_pnnn2mac[bit]]); |
1610 |
|
} |
1611 |
|
if (first) |
1612 |
|
return true; |
1613 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1614 |
ccs_print_number_union(head, &ptr->mode); |
ccs_print_number_union(head, &ptr->mode); |
1615 |
ccs_print_number_union(head, &ptr->major); |
ccs_print_number_union(head, &ptr->major); |
1617 |
} else if (acl_type == CCS_TYPE_PATH2_ACL) { |
} else if (acl_type == CCS_TYPE_PATH2_ACL) { |
1618 |
struct ccs_path2_acl *ptr = |
struct ccs_path2_acl *ptr = |
1619 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1620 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1621 |
if (bit >= CCS_MAX_PATH2_OPERATION) |
for (bit = 0; bit < CCS_MAX_PATH2_OPERATION; bit++) { |
1622 |
goto done; |
if (!(perm & (1 << bit))) |
1623 |
ccs_set_group(head); |
continue; |
1624 |
ccs_set_string(head, "file "); |
if (first) { |
1625 |
ccs_set_string(head, ccs_mac_keywords[ccs_pp2mac[bit]]); |
ccs_set_group(head, "file "); |
1626 |
|
first = false; |
1627 |
|
} else { |
1628 |
|
ccs_set_slash(head); |
1629 |
|
} |
1630 |
|
ccs_set_string(head, ccs_mac_keywords |
1631 |
|
[ccs_pp2mac[bit]]); |
1632 |
|
} |
1633 |
|
if (first) |
1634 |
|
return true; |
1635 |
ccs_print_name_union(head, &ptr->name1); |
ccs_print_name_union(head, &ptr->name1); |
1636 |
ccs_print_name_union(head, &ptr->name2); |
ccs_print_name_union(head, &ptr->name2); |
1637 |
} else if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
} else if (acl_type == CCS_TYPE_PATH_NUMBER_ACL) { |
1638 |
struct ccs_path_number_acl *ptr = |
struct ccs_path_number_acl *ptr = |
1639 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1640 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1641 |
if (bit >= CCS_MAX_PATH_NUMBER_OPERATION) |
for (bit = 0; bit < CCS_MAX_PATH_NUMBER_OPERATION; bit++) { |
1642 |
goto done; |
if (!(perm & (1 << bit))) |
1643 |
ccs_set_group(head); |
continue; |
1644 |
ccs_set_string(head, "file "); |
if (first) { |
1645 |
ccs_set_string(head, ccs_mac_keywords[ccs_pn2mac[bit]]); |
ccs_set_group(head, "file "); |
1646 |
|
first = false; |
1647 |
|
} else { |
1648 |
|
ccs_set_slash(head); |
1649 |
|
} |
1650 |
|
ccs_set_string(head, ccs_mac_keywords |
1651 |
|
[ccs_pn2mac[bit]]); |
1652 |
|
} |
1653 |
|
if (first) |
1654 |
|
return true; |
1655 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1656 |
ccs_print_number_union(head, &ptr->number); |
ccs_print_number_union(head, &ptr->number); |
1657 |
} else if (acl_type == CCS_TYPE_ENV_ACL) { |
} else if (acl_type == CCS_TYPE_ENV_ACL) { |
1658 |
struct ccs_env_acl *ptr = |
struct ccs_env_acl *ptr = |
1659 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1660 |
ccs_set_group(head); |
ccs_set_group(head, "misc env "); |
|
ccs_set_string(head, "misc env "); |
|
1661 |
ccs_set_string(head, ptr->env->name); |
ccs_set_string(head, ptr->env->name); |
1662 |
} else if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
} else if (acl_type == CCS_TYPE_CAPABILITY_ACL) { |
1663 |
struct ccs_capability_acl *ptr = |
struct ccs_capability_acl *ptr = |
1664 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1665 |
ccs_set_group(head); |
ccs_set_group(head, "capability "); |
1666 |
ccs_set_string(head, "capability "); |
ccs_set_string(head, ccs_mac_keywords |
1667 |
ccs_set_string(head, |
[ccs_c2mac[ptr->operation]]); |
|
ccs_mac_keywords[ccs_c2mac[ptr->operation]]); |
|
1668 |
} else if (acl_type == CCS_TYPE_INET_ACL) { |
} else if (acl_type == CCS_TYPE_INET_ACL) { |
1669 |
struct ccs_inet_acl *ptr = |
struct ccs_inet_acl *ptr = |
1670 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1671 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1672 |
if (bit >= CCS_MAX_NETWORK_OPERATION) |
for (bit = 0; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
1673 |
goto done; |
if (!(perm & (1 << bit))) |
1674 |
ccs_set_group(head); |
continue; |
1675 |
ccs_set_string(head, "network inet "); |
if (first) { |
1676 |
ccs_set_string(head, ccs_proto_keyword[ptr->protocol]); |
ccs_set_group(head, "network inet "); |
1677 |
ccs_set_space(head); |
ccs_set_string(head, ccs_proto_keyword |
1678 |
ccs_set_string(head, ccs_socket_keyword[bit]); |
[ptr->protocol]); |
1679 |
|
ccs_set_space(head); |
1680 |
|
first = false; |
1681 |
|
} else { |
1682 |
|
ccs_set_slash(head); |
1683 |
|
} |
1684 |
|
ccs_set_string(head, ccs_socket_keyword[bit]); |
1685 |
|
} |
1686 |
|
if (first) |
1687 |
|
return true; |
1688 |
ccs_set_space(head); |
ccs_set_space(head); |
1689 |
switch (ptr->address_type) { |
if (ptr->address.group) { |
|
char buf[128]; |
|
|
case CCS_IP_ADDRESS_TYPE_ADDRESS_GROUP: |
|
1690 |
ccs_set_string(head, "@"); |
ccs_set_string(head, "@"); |
1691 |
ccs_set_string(head, |
ccs_set_string(head, |
1692 |
ptr->address.group->group_name->name); |
ptr->address.group->group_name->name); |
1693 |
break; |
} else { |
1694 |
case CCS_IP_ADDRESS_TYPE_IPv4: |
char buf[128]; |
1695 |
ccs_print_ipv4(buf, sizeof(buf), ptr->address.ipv4.min, |
ccs_print_ip(buf, sizeof(buf), &ptr->address); |
|
ptr->address.ipv4.max); |
|
|
ccs_io_printf(head, "%s", buf); |
|
|
break; |
|
|
case CCS_IP_ADDRESS_TYPE_IPv6: |
|
|
ccs_print_ipv6(buf, sizeof(buf), ptr->address.ipv6.min, |
|
|
ptr->address.ipv6.max); |
|
1696 |
ccs_io_printf(head, "%s", buf); |
ccs_io_printf(head, "%s", buf); |
|
break; |
|
1697 |
} |
} |
1698 |
ccs_print_number_union(head, &ptr->port); |
ccs_print_number_union(head, &ptr->port); |
1699 |
} else if (acl_type == CCS_TYPE_UNIX_ACL) { |
} else if (acl_type == CCS_TYPE_UNIX_ACL) { |
1700 |
struct ccs_unix_acl *ptr = |
struct ccs_unix_acl *ptr = |
1701 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1702 |
bit = ccs_fns(ptr->perm, bit); |
const u8 perm = ptr->perm; |
1703 |
if (bit >= CCS_MAX_NETWORK_OPERATION) |
for (bit = 0; bit < CCS_MAX_NETWORK_OPERATION; bit++) { |
1704 |
goto done; |
if (!(perm & (1 << bit))) |
1705 |
ccs_set_group(head); |
continue; |
1706 |
ccs_set_string(head, "network unix "); |
if (first) { |
1707 |
ccs_set_string(head, ccs_proto_keyword[ptr->protocol]); |
ccs_set_group(head, "network unix "); |
1708 |
ccs_set_space(head); |
ccs_set_string(head, ccs_proto_keyword |
1709 |
ccs_set_string(head, ccs_socket_keyword[bit]); |
[ptr->protocol]); |
1710 |
|
ccs_set_space(head); |
1711 |
|
first = false; |
1712 |
|
} else { |
1713 |
|
ccs_set_slash(head); |
1714 |
|
} |
1715 |
|
ccs_set_string(head, ccs_socket_keyword[bit]); |
1716 |
|
} |
1717 |
|
if (first) |
1718 |
|
return true; |
1719 |
ccs_print_name_union(head, &ptr->name); |
ccs_print_name_union(head, &ptr->name); |
1720 |
} else if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
} else if (acl_type == CCS_TYPE_SIGNAL_ACL) { |
1721 |
struct ccs_signal_acl *ptr = |
struct ccs_signal_acl *ptr = |
1722 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1723 |
ccs_set_group(head); |
ccs_set_group(head, "ipc signal "); |
1724 |
ccs_set_string(head, "ipc signal "); |
ccs_print_number_union_nospace(head, &ptr->sig); |
1725 |
ccs_io_printf(head, "%u ", ptr->sig); |
ccs_set_space(head); |
1726 |
ccs_set_string(head, ptr->domainname->name); |
ccs_set_string(head, ptr->domainname->name); |
1727 |
} else if (acl_type == CCS_TYPE_MOUNT_ACL) { |
} else if (acl_type == CCS_TYPE_MOUNT_ACL) { |
1728 |
struct ccs_mount_acl *ptr = |
struct ccs_mount_acl *ptr = |
1729 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
1730 |
ccs_set_group(head); |
ccs_set_group(head, "file mount"); |
|
ccs_io_printf(head, "file mount"); |
|
1731 |
ccs_print_name_union(head, &ptr->dev_name); |
ccs_print_name_union(head, &ptr->dev_name); |
1732 |
ccs_print_name_union(head, &ptr->dir_name); |
ccs_print_name_union(head, &ptr->dir_name); |
1733 |
ccs_print_name_union(head, &ptr->fs_type); |
ccs_print_name_union(head, &ptr->fs_type); |
1734 |
ccs_print_number_union(head, &ptr->flags); |
ccs_print_number_union(head, &ptr->flags); |
1735 |
} |
} |
|
head->r.bit = bit + 1; |
|
1736 |
if (acl->cond) { |
if (acl->cond) { |
1737 |
head->r.print_cond_part = true; |
head->r.print_cond_part = true; |
1738 |
head->r.cond_step = 0; |
head->r.cond_step = 0; |
1745 |
} else { |
} else { |
1746 |
ccs_set_lf(head); |
ccs_set_lf(head); |
1747 |
} |
} |
|
switch (acl_type) { |
|
|
case CCS_TYPE_PATH_ACL: |
|
|
case CCS_TYPE_MKDEV_ACL: |
|
|
case CCS_TYPE_PATH2_ACL: |
|
|
case CCS_TYPE_PATH_NUMBER_ACL: |
|
|
case CCS_TYPE_INET_ACL: |
|
|
case CCS_TYPE_UNIX_ACL: |
|
|
goto next; |
|
|
} |
|
|
done: |
|
|
head->r.bit = 0; |
|
1748 |
return true; |
return true; |
1749 |
} |
} |
1750 |
|
|
1751 |
/** |
/** |
1752 |
* ccs_read_domain2 - Read domain policy. |
* ccs_read_domain2 - Read domain policy. |
1753 |
* |
* |
1754 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1755 |
* @domain: Pointer to "struct ccs_domain_info". |
* @list: Pointer to "struct list_head". |
|
* @index: Index number. |
|
|
* |
|
|
* Caller holds ccs_read_lock(). |
|
1756 |
* |
* |
1757 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
1758 |
|
* |
1759 |
|
* Caller holds ccs_read_lock(). |
1760 |
*/ |
*/ |
1761 |
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
static bool ccs_read_domain2(struct ccs_io_buffer *head, |
1762 |
struct ccs_domain_info *domain, |
struct list_head *list) |
|
const u8 index) |
|
1763 |
{ |
{ |
1764 |
list_for_each_cookie(head->r.acl, &domain->acl_info_list[index]) { |
list_for_each_cookie(head->r.acl, list) { |
1765 |
struct ccs_acl_info *ptr = |
struct ccs_acl_info *ptr = |
1766 |
list_entry(head->r.acl, typeof(*ptr), list); |
list_entry(head->r.acl, typeof(*ptr), list); |
1767 |
if (!ccs_print_entry(head, ptr)) |
if (!ccs_print_entry(head, ptr)) |
1776 |
* |
* |
1777 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1778 |
* |
* |
1779 |
|
* Returns nothing. |
1780 |
|
* |
1781 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
1782 |
*/ |
*/ |
1783 |
static void ccs_read_domain(struct ccs_io_buffer *head) |
static void ccs_read_domain(struct ccs_io_buffer *head) |
1806 |
ccs_set_lf(head); |
ccs_set_lf(head); |
1807 |
/* fall through */ |
/* fall through */ |
1808 |
case 1: |
case 1: |
1809 |
if (!ccs_read_domain2(head, domain, 0)) |
if (!ccs_read_domain2(head, &domain->acl_info_list)) |
|
return; |
|
|
head->r.step++; |
|
|
/* fall through */ |
|
|
case 2: |
|
|
if (!ccs_read_domain2(head, domain, 1)) |
|
1810 |
return; |
return; |
1811 |
head->r.step++; |
head->r.step++; |
1812 |
if (!ccs_set_lf(head)) |
if (!ccs_set_lf(head)) |
1813 |
return; |
return; |
1814 |
/* fall through */ |
/* fall through */ |
1815 |
case 3: |
case 2: |
1816 |
head->r.step = 0; |
head->r.step = 0; |
1817 |
if (head->r.print_this_domain_only) |
if (head->r.print_this_domain_only) |
1818 |
goto done; |
goto done; |
1823 |
} |
} |
1824 |
|
|
1825 |
/** |
/** |
1826 |
* ccs_write_domain_profile - Assign profile for specified domain. |
* ccs_write_pid - Specify PID to obtain domainname. |
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* |
|
|
* Returns 0 on success, -EINVAL otherwise. |
|
|
* |
|
|
* This is equivalent to doing |
|
|
* |
|
|
* ( echo "select " $domainname; echo "use_profile " $profile ) | |
|
|
* /usr/sbin/ccs-loadpolicy -d |
|
|
* |
|
|
* Caller holds ccs_read_lock(). |
|
|
*/ |
|
|
static int ccs_write_domain_profile(struct ccs_io_buffer *head) |
|
|
{ |
|
|
char *data = head->write_buf; |
|
|
char *cp = strchr(data, ' '); |
|
|
struct ccs_domain_info *domain; |
|
|
unsigned int profile; |
|
|
if (!cp) |
|
|
return -EINVAL; |
|
|
*cp = '\0'; |
|
|
profile = simple_strtoul(data, NULL, 10); |
|
|
if (profile >= CCS_MAX_PROFILES) |
|
|
return -EINVAL; |
|
|
domain = ccs_find_domain(cp + 1); |
|
|
if (domain && (!ccs_policy_loaded || ccs_profile_ptr[(u8) profile])) |
|
|
domain->profile = (u8) profile; |
|
|
return 0; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_read_domain_profile - Read only domainname and profile. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* |
|
|
* This is equivalent to doing |
|
|
* |
|
|
* grep -A 1 '^<kernel>' /proc/ccs/domain_policy | |
|
|
* awk ' { if ( domainname == "" ) { if ( $1 == "<kernel>" ) |
|
|
* domainname = $0; } else if ( $1 == "use_profile" ) { |
|
|
* print $2 " " domainname; domainname = ""; } } ; ' |
|
|
* |
|
|
* Caller holds ccs_read_lock(). |
|
|
*/ |
|
|
static void ccs_read_domain_profile(struct ccs_io_buffer *head) |
|
|
{ |
|
|
if (head->r.eof) |
|
|
return; |
|
|
list_for_each_cookie(head->r.domain, &ccs_domain_list) { |
|
|
struct ccs_domain_info *domain = |
|
|
list_entry(head->r.domain, typeof(*domain), list); |
|
|
if (domain->is_deleted) |
|
|
continue; |
|
|
if (!ccs_flush(head)) |
|
|
return; |
|
|
ccs_io_printf(head, "%u ", domain->profile); |
|
|
ccs_set_string(head, domain->domainname->name); |
|
|
ccs_set_lf(head); |
|
|
} |
|
|
head->r.eof = true; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_write_pid: Specify PID to obtain domainname. |
|
1827 |
* |
* |
1828 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
1829 |
* |
* |
1896 |
} |
} |
1897 |
} |
} |
1898 |
|
|
1899 |
|
/* String table for domain transition control keywords. */ |
1900 |
static const char * const ccs_transition_type[CCS_MAX_TRANSITION_TYPE] = { |
static const char * const ccs_transition_type[CCS_MAX_TRANSITION_TYPE] = { |
1901 |
|
[CCS_TRANSITION_CONTROL_NO_RESET] = "no_reset_domain ", |
1902 |
|
[CCS_TRANSITION_CONTROL_RESET] = "reset_domain ", |
1903 |
[CCS_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ", |
[CCS_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ", |
1904 |
[CCS_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ", |
[CCS_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ", |
1905 |
[CCS_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ", |
[CCS_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ", |
1906 |
[CCS_TRANSITION_CONTROL_KEEP] = "keep_domain ", |
[CCS_TRANSITION_CONTROL_KEEP] = "keep_domain ", |
1907 |
}; |
}; |
1908 |
|
|
1909 |
|
/* String table for grouping keywords. */ |
1910 |
static const char * const ccs_group_name[CCS_MAX_GROUP] = { |
static const char * const ccs_group_name[CCS_MAX_GROUP] = { |
1911 |
[CCS_PATH_GROUP] = "path_group ", |
[CCS_PATH_GROUP] = "path_group ", |
1912 |
[CCS_NUMBER_GROUP] = "number_group ", |
[CCS_NUMBER_GROUP] = "number_group ", |
1922 |
*/ |
*/ |
1923 |
static int ccs_write_exception(struct ccs_io_buffer *head) |
static int ccs_write_exception(struct ccs_io_buffer *head) |
1924 |
{ |
{ |
1925 |
char *data = head->write_buf; |
const bool is_delete = head->w.is_delete; |
1926 |
const bool is_delete = ccs_str_starts(&data, "delete "); |
struct ccs_acl_param param = { |
1927 |
u8 i; |
.ns = head->w.ns, |
1928 |
static const struct { |
.is_delete = is_delete, |
1929 |
const char *keyword; |
.data = head->write_buf, |
|
int (*write) (char *, const bool); |
|
|
} ccs_callback[2] = { |
|
|
{ "aggregator ", ccs_write_aggregator }, |
|
|
{ "deny_autobind ", ccs_write_reserved_port }, |
|
1930 |
}; |
}; |
1931 |
for (i = 0; i < 2; i++) |
u8 i; |
1932 |
if (ccs_str_starts(&data, ccs_callback[i].keyword)) |
if (ccs_str_starts(¶m.data, "aggregator ")) |
1933 |
return ccs_callback[i].write(data, is_delete); |
return ccs_write_aggregator(¶m); |
1934 |
|
if (ccs_str_starts(¶m.data, "deny_autobind ")) |
1935 |
|
return ccs_write_reserved_port(¶m); |
1936 |
for (i = 0; i < CCS_MAX_TRANSITION_TYPE; i++) |
for (i = 0; i < CCS_MAX_TRANSITION_TYPE; i++) |
1937 |
if (ccs_str_starts(&data, ccs_transition_type[i])) |
if (ccs_str_starts(¶m.data, ccs_transition_type[i])) |
1938 |
return ccs_write_transition_control(data, is_delete, |
return ccs_write_transition_control(¶m, i); |
|
i); |
|
1939 |
for (i = 0; i < CCS_MAX_GROUP; i++) |
for (i = 0; i < CCS_MAX_GROUP; i++) |
1940 |
if (ccs_str_starts(&data, ccs_group_name[i])) |
if (ccs_str_starts(¶m.data, ccs_group_name[i])) |
1941 |
return ccs_write_group(data, is_delete, i); |
return ccs_write_group(¶m, i); |
1942 |
if (ccs_str_starts(&data, "acl_group ")) { |
if (ccs_str_starts(¶m.data, "acl_group ")) { |
1943 |
unsigned int group; |
unsigned int group; |
1944 |
if (sscanf(data, "%u", &group) == 1 && |
char *data; |
1945 |
group < CCS_MAX_ACL_GROUPS) { |
group = simple_strtoul(param.data, &data, 10); |
1946 |
data = strchr(data, ' '); |
if (group < CCS_MAX_ACL_GROUPS && *data++ == ' ') |
1947 |
if (data) |
return ccs_write_domain2(head->w.ns, |
1948 |
return ccs_write_domain2(data + 1, |
&head->w.ns->acl_group[group], |
1949 |
&ccs_acl_group[group], |
data, is_delete); |
|
is_delete); |
|
|
} |
|
1950 |
} |
} |
1951 |
return -EINVAL; |
return -EINVAL; |
1952 |
} |
} |
1963 |
*/ |
*/ |
1964 |
static bool ccs_read_group(struct ccs_io_buffer *head, const int idx) |
static bool ccs_read_group(struct ccs_io_buffer *head, const int idx) |
1965 |
{ |
{ |
1966 |
list_for_each_cookie(head->r.group, &ccs_group_list[idx]) { |
struct ccs_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), |
1967 |
|
namespace_list); |
1968 |
|
struct list_head *list = &ns->group_list[idx]; |
1969 |
|
list_for_each_cookie(head->r.group, list) { |
1970 |
struct ccs_group *group = |
struct ccs_group *group = |
1971 |
list_entry(head->r.group, typeof(*group), head.list); |
list_entry(head->r.group, typeof(*group), head.list); |
1972 |
list_for_each_cookie(head->r.acl, &group->member_list) { |
list_for_each_cookie(head->r.acl, &group->member_list) { |
1976 |
continue; |
continue; |
1977 |
if (!ccs_flush(head)) |
if (!ccs_flush(head)) |
1978 |
return false; |
return false; |
1979 |
|
ccs_print_namespace(head); |
1980 |
ccs_set_string(head, ccs_group_name[idx]); |
ccs_set_string(head, ccs_group_name[idx]); |
1981 |
ccs_set_string(head, group->group_name->name); |
ccs_set_string(head, group->group_name->name); |
1982 |
if (idx == CCS_PATH_GROUP) { |
if (idx == CCS_PATH_GROUP) { |
1993 |
struct ccs_address_group *member = |
struct ccs_address_group *member = |
1994 |
container_of(ptr, typeof(*member), |
container_of(ptr, typeof(*member), |
1995 |
head); |
head); |
1996 |
if (member->is_ipv6) |
ccs_print_ip(buffer, sizeof(buffer), |
1997 |
ccs_print_ipv6(buffer, sizeof(buffer), |
&member->address); |
|
member->min.ipv6, |
|
|
member->max.ipv6); |
|
|
else |
|
|
ccs_print_ipv4(buffer, sizeof(buffer), |
|
|
member->min.ipv4, |
|
|
member->max.ipv4); |
|
1998 |
ccs_io_printf(head, " %s", buffer); |
ccs_io_printf(head, " %s", buffer); |
1999 |
} |
} |
2000 |
ccs_set_lf(head); |
ccs_set_lf(head); |
2017 |
*/ |
*/ |
2018 |
static bool ccs_read_policy(struct ccs_io_buffer *head, const int idx) |
static bool ccs_read_policy(struct ccs_io_buffer *head, const int idx) |
2019 |
{ |
{ |
2020 |
list_for_each_cookie(head->r.acl, &ccs_policy_list[idx]) { |
struct ccs_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), |
2021 |
|
namespace_list); |
2022 |
|
struct list_head *list = &ns->policy_list[idx]; |
2023 |
|
list_for_each_cookie(head->r.acl, list) { |
2024 |
struct ccs_acl_head *acl = |
struct ccs_acl_head *acl = |
2025 |
container_of(head->r.acl, typeof(*acl), list); |
container_of(head->r.acl, typeof(*acl), list); |
2026 |
if (acl->is_deleted) |
if (acl->is_deleted) |
2027 |
continue; |
continue; |
2028 |
|
if (head->r.print_transition_related_only && |
2029 |
|
idx != CCS_ID_TRANSITION_CONTROL) |
2030 |
|
continue; |
2031 |
if (!ccs_flush(head)) |
if (!ccs_flush(head)) |
2032 |
return false; |
return false; |
2033 |
switch (idx) { |
switch (idx) { |
2035 |
{ |
{ |
2036 |
struct ccs_transition_control *ptr = |
struct ccs_transition_control *ptr = |
2037 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
2038 |
|
ccs_print_namespace(head); |
2039 |
ccs_set_string(head, |
ccs_set_string(head, |
2040 |
ccs_transition_type[ptr->type]); |
ccs_transition_type[ptr->type]); |
2041 |
ccs_set_string(head, ptr->program ? |
ccs_set_string(head, ptr->program ? |
2049 |
{ |
{ |
2050 |
struct ccs_aggregator *ptr = |
struct ccs_aggregator *ptr = |
2051 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
2052 |
|
ccs_print_namespace(head); |
2053 |
ccs_set_string(head, "aggregator "); |
ccs_set_string(head, "aggregator "); |
2054 |
ccs_set_string(head, ptr->original_name->name); |
ccs_set_string(head, ptr->original_name->name); |
2055 |
ccs_set_space(head); |
ccs_set_space(head); |
2061 |
{ |
{ |
2062 |
struct ccs_reserved *ptr = |
struct ccs_reserved *ptr = |
2063 |
container_of(acl, typeof(*ptr), head); |
container_of(acl, typeof(*ptr), head); |
2064 |
const u16 min_port = ptr->min_port; |
ccs_print_namespace(head); |
|
const u16 max_port = ptr->max_port; |
|
2065 |
ccs_set_string(head, "deny_autobind "); |
ccs_set_string(head, "deny_autobind "); |
2066 |
ccs_io_printf(head, "%u", min_port); |
ccs_print_number_union_nospace(head, |
2067 |
if (min_port != max_port) |
&ptr->port); |
|
ccs_io_printf(head, "-%u", max_port); |
|
2068 |
} |
} |
2069 |
break; |
break; |
2070 |
default: |
default: |
2081 |
* |
* |
2082 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
2083 |
* |
* |
2084 |
|
* Returns nothing. |
2085 |
|
* |
2086 |
* Caller holds ccs_read_lock(). |
* Caller holds ccs_read_lock(). |
2087 |
*/ |
*/ |
2088 |
static void ccs_read_exception(struct ccs_io_buffer *head) |
static void ccs_read_exception(struct ccs_io_buffer *head) |
2089 |
{ |
{ |
2090 |
|
struct ccs_policy_namespace *ns = container_of(head->r.ns, typeof(*ns), |
2091 |
|
namespace_list); |
2092 |
if (head->r.eof) |
if (head->r.eof) |
2093 |
return; |
return; |
2094 |
while (head->r.step < CCS_MAX_POLICY && |
while (head->r.step < CCS_MAX_POLICY && |
2102 |
if (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP) |
if (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP) |
2103 |
return; |
return; |
2104 |
while (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP |
while (head->r.step < CCS_MAX_POLICY + CCS_MAX_GROUP |
2105 |
+ CCS_MAX_ACL_GROUPS * 2) { |
+ CCS_MAX_ACL_GROUPS) { |
2106 |
head->r.group_index = (head->r.step - CCS_MAX_POLICY |
head->r.acl_group_index = |
2107 |
- CCS_MAX_GROUP) / 2; |
head->r.step - CCS_MAX_POLICY - CCS_MAX_GROUP; |
2108 |
if (!ccs_read_domain2(head, |
if (!ccs_read_domain2(head, &ns->acl_group |
2109 |
&ccs_acl_group[head->r.group_index], |
[head->r.acl_group_index])) |
|
head->r.step & 1)) |
|
2110 |
return; |
return; |
2111 |
head->r.step++; |
head->r.step++; |
2112 |
} |
} |
2113 |
head->r.eof = true; |
head->r.eof = true; |
2114 |
} |
} |
2115 |
|
|
2116 |
/* Wait queue for ccs_query_list. */ |
/* Wait queue for kernel -> userspace notification. */ |
2117 |
static DECLARE_WAIT_QUEUE_HEAD(ccs_query_wait); |
static DECLARE_WAIT_QUEUE_HEAD(ccs_query_wait); |
2118 |
|
/* Wait queue for userspace -> kernel notification. */ |
2119 |
static DECLARE_WAIT_QUEUE_HEAD(ccs_answer_wait); |
static DECLARE_WAIT_QUEUE_HEAD(ccs_answer_wait); |
2120 |
|
|
|
/* Lock for manipulating ccs_query_list. */ |
|
|
static DEFINE_SPINLOCK(ccs_query_list_lock); |
|
|
|
|
2121 |
/* Structure for query. */ |
/* Structure for query. */ |
2122 |
struct ccs_query { |
struct ccs_query { |
2123 |
struct list_head list; |
struct list_head list; |
2124 |
char *query; |
char *query; |
2125 |
int query_len; |
size_t query_len; |
2126 |
unsigned int serial; |
unsigned int serial; |
2127 |
int timer; |
u8 timer; |
2128 |
int answer; |
u8 answer; |
2129 |
u8 retry; |
u8 retry; |
2130 |
}; |
}; |
2131 |
|
|
2132 |
/* The list for "struct ccs_query". */ |
/* The list for "struct ccs_query". */ |
2133 |
static LIST_HEAD(ccs_query_list); |
static LIST_HEAD(ccs_query_list); |
2134 |
|
|
2135 |
|
/* Lock for manipulating ccs_query_list. */ |
2136 |
|
static DEFINE_SPINLOCK(ccs_query_list_lock); |
2137 |
|
|
2138 |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
/* Number of "struct file" referring /proc/ccs/query interface. */ |
2139 |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
static atomic_t ccs_query_observers = ATOMIC_INIT(0); |
2140 |
|
|
2141 |
|
/** |
2142 |
|
* ccs_truncate - Truncate a line. |
2143 |
|
* |
2144 |
|
* @str: String to truncate. |
2145 |
|
* |
2146 |
|
* Returns length of truncated @str. |
2147 |
|
*/ |
2148 |
static int ccs_truncate(char *str) |
static int ccs_truncate(char *str) |
2149 |
{ |
{ |
2150 |
char *start = str; |
char *start = str; |
2154 |
return strlen(start) + 1; |
return strlen(start) + 1; |
2155 |
} |
} |
2156 |
|
|
2157 |
|
/** |
2158 |
|
* ccs_add_entry - Add an ACL to current thread's domain. Used by learning mode. |
2159 |
|
* |
2160 |
|
* @header: Lines containing ACL. |
2161 |
|
* |
2162 |
|
* Returns nothing. |
2163 |
|
*/ |
2164 |
static void ccs_add_entry(char *header) |
static void ccs_add_entry(char *header) |
2165 |
{ |
{ |
2166 |
char *buffer; |
char *buffer; |
2209 |
if (symlink) |
if (symlink) |
2210 |
ccs_addprintf(buffer, len, "%s", symlink); |
ccs_addprintf(buffer, len, "%s", symlink); |
2211 |
ccs_normalize_line(buffer); |
ccs_normalize_line(buffer); |
2212 |
if (!ccs_write_domain2(buffer, ccs_current_domain(), false)) |
{ |
2213 |
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
struct ccs_domain_info *domain = ccs_current_domain(); |
2214 |
|
if (!ccs_write_domain2(domain->ns, &domain->acl_info_list, |
2215 |
|
buffer, false)) |
2216 |
|
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
2217 |
|
} |
2218 |
kfree(buffer); |
kfree(buffer); |
2219 |
} |
} |
2220 |
|
|
2240 |
va_start(args, fmt); |
va_start(args, fmt); |
2241 |
len = vsnprintf((char *) &len, 1, fmt, args) + 1; |
len = vsnprintf((char *) &len, 1, fmt, args) + 1; |
2242 |
va_end(args); |
va_end(args); |
2243 |
/* Write /proc/ccs/grant_log or /proc/ccs/reject_log . */ |
/* Write /proc/ccs/audit. */ |
2244 |
va_start(args, fmt); |
va_start(args, fmt); |
2245 |
ccs_write_log2(r, len, fmt, args); |
ccs_write_log2(r, len, fmt, args); |
2246 |
va_end(args); |
va_end(args); |
2256 |
error = -EPERM; |
error = -EPERM; |
2257 |
if (atomic_read(&ccs_query_observers)) |
if (atomic_read(&ccs_query_observers)) |
2258 |
break; |
break; |
2259 |
if (ccs_current_flags() & CCS_DONT_SLEEP_ON_ENFORCE_ERROR) |
if (r->dont_sleep_on_enforce_error) |
2260 |
goto out; |
goto out; |
2261 |
p = ccs_profile(r->profile); |
p = ccs_profile(r->profile); |
2262 |
/* Check enforcing_penalty parameter. */ |
/* Check enforcing_penalty parameter. */ |
2267 |
goto out; |
goto out; |
2268 |
case CCS_CONFIG_LEARNING: |
case CCS_CONFIG_LEARNING: |
2269 |
error = 0; |
error = 0; |
2270 |
/* Check mac_learning_entry parameter. */ |
/* Check max_learning_entry parameter. */ |
2271 |
if (ccs_domain_quota_ok(r)) |
if (ccs_domain_quota_ok(r)) |
2272 |
break; |
break; |
2273 |
/* fall through */ |
/* fall through */ |
2371 |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
* ccs_read_query - Read access requests which violated policy in enforcing mode. |
2372 |
* |
* |
2373 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
2374 |
|
* |
2375 |
|
* Returns nothing. |
2376 |
*/ |
*/ |
2377 |
static void ccs_read_query(struct ccs_io_buffer *head) |
static void ccs_read_query(struct ccs_io_buffer *head) |
2378 |
{ |
{ |
2379 |
struct list_head *tmp; |
struct list_head *tmp; |
2380 |
int pos = 0; |
unsigned int pos = 0; |
2381 |
int len = 0; |
size_t len = 0; |
2382 |
char *buf; |
char *buf; |
2383 |
if (head->r.w_pos) |
if (head->r.w_pos) |
2384 |
return; |
return; |
2385 |
if (head->read_buf) { |
kfree(head->read_buf); |
2386 |
kfree(head->read_buf); |
head->read_buf = NULL; |
|
head->read_buf = NULL; |
|
|
} |
|
2387 |
spin_lock(&ccs_query_list_lock); |
spin_lock(&ccs_query_list_lock); |
2388 |
list_for_each(tmp, &ccs_query_list) { |
list_for_each(tmp, &ccs_query_list) { |
2389 |
struct ccs_query *ptr = list_entry(tmp, typeof(*ptr), list); |
struct ccs_query *ptr = list_entry(tmp, typeof(*ptr), list); |
2415 |
* can change, but I don't care. |
* can change, but I don't care. |
2416 |
*/ |
*/ |
2417 |
if (len == ptr->query_len) |
if (len == ptr->query_len) |
2418 |
snprintf(buf, len + 32, "Q%u-%hu\n%s", ptr->serial, |
snprintf(buf, len + 31, "Q%u-%hu\n%s", ptr->serial, |
2419 |
ptr->retry, ptr->query); |
ptr->retry, ptr->query); |
2420 |
break; |
break; |
2421 |
} |
} |
2456 |
if (ptr->serial != serial) |
if (ptr->serial != serial) |
2457 |
continue; |
continue; |
2458 |
if (!ptr->answer) |
if (!ptr->answer) |
2459 |
ptr->answer = answer; |
ptr->answer = (u8) answer; |
2460 |
break; |
break; |
2461 |
} |
} |
2462 |
spin_unlock(&ccs_query_list_lock); |
spin_unlock(&ccs_query_list_lock); |
2465 |
} |
} |
2466 |
|
|
2467 |
/** |
/** |
2468 |
* ccs_read_version: Get version. |
* ccs_read_version - Get version. |
2469 |
* |
* |
2470 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
2471 |
|
* |
2472 |
|
* Returns nothing. |
2473 |
*/ |
*/ |
2474 |
static void ccs_read_version(struct ccs_io_buffer *head) |
static void ccs_read_version(struct ccs_io_buffer *head) |
2475 |
{ |
{ |
2476 |
if (head->r.eof) |
if (head->r.eof) |
2477 |
return; |
return; |
2478 |
ccs_set_string(head, "1.8.0-pre"); |
ccs_set_string(head, "1.8.3"); |
2479 |
head->r.eof = true; |
head->r.eof = true; |
2480 |
} |
} |
2481 |
|
|
2482 |
|
/* String table for /proc/ccs/stat interface. */ |
2483 |
|
static const char * const ccs_policy_headers[CCS_MAX_POLICY_STAT] = { |
2484 |
|
[CCS_STAT_POLICY_UPDATES] = "update:", |
2485 |
|
[CCS_STAT_POLICY_LEARNING] = "violation in learning mode:", |
2486 |
|
[CCS_STAT_POLICY_PERMISSIVE] = "violation in permissive mode:", |
2487 |
|
[CCS_STAT_POLICY_ENFORCING] = "violation in enforcing mode:", |
2488 |
|
}; |
2489 |
|
|
2490 |
|
/* String table for /proc/ccs/stat interface. */ |
2491 |
|
static const char * const ccs_memory_headers[CCS_MAX_MEMORY_STAT] = { |
2492 |
|
[CCS_MEMORY_POLICY] = "policy:", |
2493 |
|
[CCS_MEMORY_AUDIT] = "audit log:", |
2494 |
|
[CCS_MEMORY_QUERY] = "query message:", |
2495 |
|
}; |
2496 |
|
|
2497 |
|
/* Timestamp counter for last updated. */ |
2498 |
|
static unsigned int ccs_stat_updated[CCS_MAX_POLICY_STAT]; |
2499 |
|
/* Counter for number of updates. */ |
2500 |
|
static unsigned int ccs_stat_modified[CCS_MAX_POLICY_STAT]; |
2501 |
|
|
2502 |
|
/** |
2503 |
|
* ccs_update_stat - Update statistic counters. |
2504 |
|
* |
2505 |
|
* @index: Index for policy type. |
2506 |
|
* |
2507 |
|
* Returns nothing. |
2508 |
|
*/ |
2509 |
|
void ccs_update_stat(const u8 index) |
2510 |
|
{ |
2511 |
|
struct timeval tv; |
2512 |
|
do_gettimeofday(&tv); |
2513 |
|
/* |
2514 |
|
* I don't use atomic operations because race condition is not fatal. |
2515 |
|
*/ |
2516 |
|
ccs_stat_updated[index]++; |
2517 |
|
ccs_stat_modified[index] = tv.tv_sec; |
2518 |
|
} |
2519 |
|
|
2520 |
|
/** |
2521 |
|
* ccs_read_stat - Read statistic data. |
2522 |
|
* |
2523 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2524 |
|
* |
2525 |
|
* Returns nothing. |
2526 |
|
*/ |
2527 |
|
static void ccs_read_stat(struct ccs_io_buffer *head) |
2528 |
|
{ |
2529 |
|
u8 i; |
2530 |
|
unsigned int total = 0; |
2531 |
|
if (head->r.eof) |
2532 |
|
return; |
2533 |
|
for (i = 0; i < CCS_MAX_POLICY_STAT; i++) { |
2534 |
|
ccs_io_printf(head, "Policy %-30s %10u", ccs_policy_headers[i], |
2535 |
|
ccs_stat_updated[i]); |
2536 |
|
if (ccs_stat_modified[i]) { |
2537 |
|
struct ccs_time stamp; |
2538 |
|
ccs_convert_time(ccs_stat_modified[i], &stamp); |
2539 |
|
ccs_io_printf(head, " (Last: %04u/%02u/%02u " |
2540 |
|
"%02u:%02u:%02u)", |
2541 |
|
stamp.year, stamp.month, stamp.day, |
2542 |
|
stamp.hour, stamp.min, stamp.sec); |
2543 |
|
} |
2544 |
|
ccs_set_lf(head); |
2545 |
|
} |
2546 |
|
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) { |
2547 |
|
unsigned int used = ccs_memory_used[i]; |
2548 |
|
total += used; |
2549 |
|
ccs_io_printf(head, "Memory used by %-22s %10u", |
2550 |
|
ccs_memory_headers[i], used); |
2551 |
|
used = ccs_memory_quota[i]; |
2552 |
|
if (used) |
2553 |
|
ccs_io_printf(head, " (Quota: %10u)", used); |
2554 |
|
ccs_set_lf(head); |
2555 |
|
} |
2556 |
|
ccs_io_printf(head, "Total memory used: %10u\n", |
2557 |
|
total); |
2558 |
|
head->r.eof = true; |
2559 |
|
} |
2560 |
|
|
2561 |
|
/** |
2562 |
|
* ccs_write_stat - Set memory quota. |
2563 |
|
* |
2564 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2565 |
|
* |
2566 |
|
* Returns 0. |
2567 |
|
*/ |
2568 |
|
static int ccs_write_stat(struct ccs_io_buffer *head) |
2569 |
|
{ |
2570 |
|
char *data = head->write_buf; |
2571 |
|
u8 i; |
2572 |
|
if (ccs_str_starts(&data, "Memory used by ")) |
2573 |
|
for (i = 0; i < CCS_MAX_MEMORY_STAT; i++) |
2574 |
|
if (ccs_str_starts(&data, ccs_memory_headers[i])) { |
2575 |
|
if (*data == ' ') |
2576 |
|
data++; |
2577 |
|
ccs_memory_quota[i] = |
2578 |
|
simple_strtoul(data, NULL, 10); |
2579 |
|
} |
2580 |
|
return 0; |
2581 |
|
} |
2582 |
|
|
2583 |
/** |
/** |
2584 |
* ccs_open_control - open() for /proc/ccs/ interface. |
* ccs_open_control - open() for /proc/ccs/ interface. |
2585 |
* |
* |
2586 |
* @type: Type of interface. |
* @type: Type of interface. |
2587 |
* @file: Pointer to "struct file". |
* @file: Pointer to "struct file". |
2588 |
* |
* |
2589 |
* Associates policy handler and returns 0 on success, -ENOMEM otherwise. |
* Returns 0 on success, negative value otherwise. |
2590 |
*/ |
*/ |
2591 |
int ccs_open_control(const u8 type, struct file *file) |
int ccs_open_control(const u8 type, struct file *file) |
2592 |
{ |
{ |
2595 |
return -ENOMEM; |
return -ENOMEM; |
2596 |
mutex_init(&head->io_sem); |
mutex_init(&head->io_sem); |
2597 |
head->type = type; |
head->type = type; |
2598 |
switch (type) { |
if (type == CCS_EXECUTE_HANDLER) { |
|
case CCS_DOMAINPOLICY: /* /proc/ccs/domain_policy */ |
|
|
head->write = ccs_write_domain; |
|
|
head->read = ccs_read_domain; |
|
|
break; |
|
|
case CCS_EXCEPTIONPOLICY: /* /proc/ccs/exception_policy */ |
|
|
head->write = ccs_write_exception; |
|
|
head->read = ccs_read_exception; |
|
|
break; |
|
|
case CCS_GRANTLOG: /* /proc/ccs/grant_log */ |
|
|
case CCS_REJECTLOG: /* /proc/ccs/reject_log */ |
|
|
head->poll = ccs_poll_log; |
|
|
head->read = ccs_read_log; |
|
|
break; |
|
|
case CCS_DOMAIN_STATUS: /* /proc/ccs/.domain_status */ |
|
|
head->write = ccs_write_domain_profile; |
|
|
head->read = ccs_read_domain_profile; |
|
|
break; |
|
|
case CCS_EXECUTE_HANDLER: /* /proc/ccs/.execute_handler */ |
|
2599 |
/* Allow execute_handler to read process's status. */ |
/* Allow execute_handler to read process's status. */ |
2600 |
if (!(ccs_current_flags() & CCS_TASK_IS_EXECUTE_HANDLER)) { |
if (!(ccs_current_flags() & CCS_TASK_IS_EXECUTE_HANDLER)) { |
2601 |
kfree(head); |
kfree(head); |
2602 |
return -EPERM; |
return -EPERM; |
2603 |
} |
} |
|
/* fall through */ |
|
|
case CCS_PROCESS_STATUS: /* /proc/ccs/.process_status */ |
|
|
head->write = ccs_write_pid; |
|
|
head->read = ccs_read_pid; |
|
|
break; |
|
|
case CCS_VERSION: /* /proc/ccs/version */ |
|
|
head->read = ccs_read_version; |
|
|
head->readbuf_size = 128; |
|
|
break; |
|
|
case CCS_MEMINFO: /* /proc/ccs/meminfo */ |
|
|
head->write = ccs_write_memory_quota; |
|
|
head->read = ccs_read_memory_counter; |
|
|
head->readbuf_size = 512; |
|
|
break; |
|
|
case CCS_PROFILE: /* /proc/ccs/profile */ |
|
|
head->write = ccs_write_profile; |
|
|
head->read = ccs_read_profile; |
|
|
break; |
|
|
case CCS_QUERY: /* /proc/ccs/query */ |
|
|
head->poll = ccs_poll_query; |
|
|
head->write = ccs_write_answer; |
|
|
head->read = ccs_read_query; |
|
|
break; |
|
|
case CCS_MANAGER: /* /proc/ccs/manager */ |
|
|
head->write = ccs_write_manager; |
|
|
head->read = ccs_read_manager; |
|
|
break; |
|
2604 |
} |
} |
2605 |
if (!(file->f_mode & FMODE_READ)) { |
if ((file->f_mode & FMODE_READ) && type != CCS_AUDIT && |
2606 |
/* |
type != CCS_QUERY) { |
|
* No need to allocate read_buf since it is not opened |
|
|
* for reading. |
|
|
*/ |
|
|
head->read = NULL; |
|
|
head->poll = NULL; |
|
|
} else if (!head->poll) { |
|
2607 |
/* Don't allocate read_buf for poll() access. */ |
/* Don't allocate read_buf for poll() access. */ |
2608 |
if (!head->readbuf_size) |
head->readbuf_size = 4096; |
|
head->readbuf_size = 4096; |
|
2609 |
head->read_buf = kzalloc(head->readbuf_size, CCS_GFP_FLAGS); |
head->read_buf = kzalloc(head->readbuf_size, CCS_GFP_FLAGS); |
2610 |
if (!head->read_buf) { |
if (!head->read_buf) { |
2611 |
kfree(head); |
kfree(head); |
2612 |
return -ENOMEM; |
return -ENOMEM; |
2613 |
} |
} |
2614 |
} |
} |
2615 |
if (!(file->f_mode & FMODE_WRITE)) { |
if (file->f_mode & FMODE_WRITE) { |
|
/* |
|
|
* No need to allocate write_buf since it is not opened |
|
|
* for writing. |
|
|
*/ |
|
|
head->write = NULL; |
|
|
} else if (head->write) { |
|
2616 |
head->writebuf_size = 4096; |
head->writebuf_size = 4096; |
2617 |
head->write_buf = kzalloc(head->writebuf_size, CCS_GFP_FLAGS); |
head->write_buf = kzalloc(head->writebuf_size, CCS_GFP_FLAGS); |
2618 |
if (!head->write_buf) { |
if (!head->write_buf) { |
2622 |
} |
} |
2623 |
} |
} |
2624 |
/* |
/* |
2625 |
* If the file is /proc/ccs/query , increment the observer counter. |
* If the file is /proc/ccs/query, increment the observer counter. |
2626 |
* The obserber counter is used by ccs_supervisor() to see if |
* The obserber counter is used by ccs_supervisor() to see if |
2627 |
* there is some process monitoring /proc/ccs/query. |
* there is some process monitoring /proc/ccs/query. |
2628 |
*/ |
*/ |
2629 |
if (type == CCS_QUERY) |
if (type == CCS_QUERY) |
2630 |
atomic_inc(&ccs_query_observers); |
atomic_inc(&ccs_query_observers); |
|
else if (type != CCS_GRANTLOG && type != CCS_REJECTLOG) |
|
|
head->reader_idx = ccs_lock(); |
|
2631 |
file->private_data = head; |
file->private_data = head; |
2632 |
|
ccs_notify_gc(head, true); |
2633 |
return 0; |
return 0; |
2634 |
} |
} |
2635 |
|
|
2639 |
* @file: Pointer to "struct file". |
* @file: Pointer to "struct file". |
2640 |
* @wait: Pointer to "poll_table". |
* @wait: Pointer to "poll_table". |
2641 |
* |
* |
2642 |
|
* Returns return value of poll(). |
2643 |
|
* |
2644 |
* Waits for read readiness. |
* Waits for read readiness. |
2645 |
* /proc/ccs/query is handled by /usr/sbin/ccs-queryd and |
* /proc/ccs/query is handled by /usr/sbin/ccs-queryd and |
2646 |
* /proc/ccs/grant_log and /proc/ccs/reject_log are handled by |
* /proc/ccs/audit is handled by /usr/sbin/ccs-auditd. |
|
* /usr/sbin/ccs-auditd . |
|
2647 |
*/ |
*/ |
2648 |
int ccs_poll_control(struct file *file, poll_table *wait) |
int ccs_poll_control(struct file *file, poll_table *wait) |
2649 |
{ |
{ |
2650 |
struct ccs_io_buffer *head = file->private_data; |
struct ccs_io_buffer *head = file->private_data; |
2651 |
if (!head->poll) |
switch (head->type) { |
2652 |
|
case CCS_AUDIT: |
2653 |
|
return ccs_poll_log(file, wait); |
2654 |
|
case CCS_QUERY: |
2655 |
|
return ccs_poll_query(file, wait); |
2656 |
|
default: |
2657 |
return -ENOSYS; |
return -ENOSYS; |
2658 |
return head->poll(file, wait); |
} |
2659 |
|
} |
2660 |
|
|
2661 |
|
/** |
2662 |
|
* ccs_set_namespace_cursor - Set namespace to read. |
2663 |
|
* |
2664 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2665 |
|
* |
2666 |
|
* Returns nothing. |
2667 |
|
*/ |
2668 |
|
static inline void ccs_set_namespace_cursor(struct ccs_io_buffer *head) |
2669 |
|
{ |
2670 |
|
struct list_head *ns; |
2671 |
|
if (head->type != CCS_EXCEPTIONPOLICY && head->type != CCS_PROFILE) |
2672 |
|
return; |
2673 |
|
/* |
2674 |
|
* If this is the first read, or reading previous namespace finished |
2675 |
|
* and has more namespaces to read, update the namespace cursor. |
2676 |
|
*/ |
2677 |
|
ns = head->r.ns; |
2678 |
|
if (!ns || (head->r.eof && ns->next != &ccs_namespace_list)) { |
2679 |
|
/* Clearing is OK because ccs_flush() returned true. */ |
2680 |
|
memset(&head->r, 0, sizeof(head->r)); |
2681 |
|
head->r.ns = ns ? ns->next : ccs_namespace_list.next; |
2682 |
|
} |
2683 |
|
} |
2684 |
|
|
2685 |
|
/** |
2686 |
|
* ccs_has_more_namespace - Check for unread namespaces. |
2687 |
|
* |
2688 |
|
* @head: Pointer to "struct ccs_io_buffer". |
2689 |
|
* |
2690 |
|
* Returns true if we have more entries to print, false otherwise. |
2691 |
|
*/ |
2692 |
|
static inline bool ccs_has_more_namespace(struct ccs_io_buffer *head) |
2693 |
|
{ |
2694 |
|
return (head->type == CCS_EXCEPTIONPOLICY || |
2695 |
|
head->type == CCS_PROFILE) && head->r.eof && |
2696 |
|
head->r.ns->next != &ccs_namespace_list; |
2697 |
} |
} |
2698 |
|
|
2699 |
/** |
/** |
2700 |
* ccs_read_control - read() for /proc/ccs/ interface. |
* ccs_read_control - read() for /proc/ccs/ interface. |
2701 |
* |
* |
2702 |
* @file: Pointer to "struct file". |
* @head: Pointer to "struct ccs_io_buffer". |
2703 |
* @buffer: Poiner to buffer to write to. |
* @buffer: Poiner to buffer to write to. |
2704 |
* @buffer_len: Size of @buffer. |
* @buffer_len: Size of @buffer. |
2705 |
* |
* |
2706 |
* Returns bytes read on success, negative value otherwise. |
* Returns bytes read on success, negative value otherwise. |
2707 |
*/ |
*/ |
2708 |
int ccs_read_control(struct file *file, char __user *buffer, |
ssize_t ccs_read_control(struct ccs_io_buffer *head, char __user *buffer, |
2709 |
const int buffer_len) |
const size_t buffer_len) |
2710 |
{ |
{ |
2711 |
int len; |
int len; |
|
struct ccs_io_buffer *head = file->private_data; |
|
2712 |
int idx; |
int idx; |
|
if (!head->read) |
|
|
return -ENOSYS; |
|
2713 |
if (!access_ok(VERIFY_WRITE, buffer, buffer_len)) |
if (!access_ok(VERIFY_WRITE, buffer, buffer_len)) |
2714 |
return -EFAULT; |
return -EFAULT; |
2715 |
if (mutex_lock_interruptible(&head->io_sem)) |
if (mutex_lock_interruptible(&head->io_sem)) |
2719 |
idx = ccs_read_lock(); |
idx = ccs_read_lock(); |
2720 |
if (ccs_flush(head)) |
if (ccs_flush(head)) |
2721 |
/* Call the policy handler. */ |
/* Call the policy handler. */ |
2722 |
head->read(head); |
do { |
2723 |
ccs_flush(head); |
ccs_set_namespace_cursor(head); |
2724 |
|
switch (head->type) { |
2725 |
|
case CCS_DOMAINPOLICY: |
2726 |
|
ccs_read_domain(head); |
2727 |
|
break; |
2728 |
|
case CCS_EXCEPTIONPOLICY: |
2729 |
|
ccs_read_exception(head); |
2730 |
|
break; |
2731 |
|
case CCS_AUDIT: |
2732 |
|
ccs_read_log(head); |
2733 |
|
break; |
2734 |
|
case CCS_EXECUTE_HANDLER: |
2735 |
|
case CCS_PROCESS_STATUS: |
2736 |
|
ccs_read_pid(head); |
2737 |
|
break; |
2738 |
|
case CCS_VERSION: |
2739 |
|
ccs_read_version(head); |
2740 |
|
break; |
2741 |
|
case CCS_STAT: |
2742 |
|
ccs_read_stat(head); |
2743 |
|
break; |
2744 |
|
case CCS_PROFILE: |
2745 |
|
ccs_read_profile(head); |
2746 |
|
break; |
2747 |
|
case CCS_QUERY: |
2748 |
|
ccs_read_query(head); |
2749 |
|
break; |
2750 |
|
case CCS_MANAGER: |
2751 |
|
ccs_read_manager(head); |
2752 |
|
break; |
2753 |
|
} |
2754 |
|
} while (ccs_flush(head) && ccs_has_more_namespace(head)); |
2755 |
ccs_read_unlock(idx); |
ccs_read_unlock(idx); |
2756 |
len = head->read_user_buf - buffer; |
len = head->read_user_buf - buffer; |
2757 |
mutex_unlock(&head->io_sem); |
mutex_unlock(&head->io_sem); |
2759 |
} |
} |
2760 |
|
|
2761 |
/** |
/** |
2762 |
|
* ccs_parse_policy - Parse a policy line. |
2763 |
|
* |
2764 |
|
* @head: Poiter to "struct ccs_io_buffer". |
2765 |
|
* @line: Line to parse. |
2766 |
|
* |
2767 |
|
* Returns 0 on success, negative value otherwise. |
2768 |
|
* |
2769 |
|
* Caller holds ccs_read_lock(). |
2770 |
|
*/ |
2771 |
|
static int ccs_parse_policy(struct ccs_io_buffer *head, char *line) |
2772 |
|
{ |
2773 |
|
/* Delete request? */ |
2774 |
|
head->w.is_delete = !strncmp(line, "delete ", 7); |
2775 |
|
if (head->w.is_delete) |
2776 |
|
memmove(line, line + 7, strlen(line + 7) + 1); |
2777 |
|
/* Selecting namespace to update. */ |
2778 |
|
if (head->type == CCS_EXCEPTIONPOLICY || head->type == CCS_PROFILE) { |
2779 |
|
if (*line == '<') { |
2780 |
|
char *cp = strchr(line, ' '); |
2781 |
|
if (cp) { |
2782 |
|
*cp++ = '\0'; |
2783 |
|
head->w.ns = ccs_assign_namespace(line); |
2784 |
|
memmove(line, cp, strlen(cp) + 1); |
2785 |
|
} else |
2786 |
|
head->w.ns = NULL; |
2787 |
|
} else |
2788 |
|
head->w.ns = &ccs_kernel_namespace; |
2789 |
|
/* Don't allow updating if namespace is invalid. */ |
2790 |
|
if (!head->w.ns) |
2791 |
|
return -ENOENT; |
2792 |
|
} |
2793 |
|
/* Do the update. */ |
2794 |
|
switch (head->type) { |
2795 |
|
case CCS_DOMAINPOLICY: |
2796 |
|
return ccs_write_domain(head); |
2797 |
|
case CCS_EXCEPTIONPOLICY: |
2798 |
|
return ccs_write_exception(head); |
2799 |
|
case CCS_EXECUTE_HANDLER: |
2800 |
|
case CCS_PROCESS_STATUS: |
2801 |
|
return ccs_write_pid(head); |
2802 |
|
case CCS_STAT: |
2803 |
|
return ccs_write_stat(head); |
2804 |
|
case CCS_PROFILE: |
2805 |
|
return ccs_write_profile(head); |
2806 |
|
case CCS_QUERY: |
2807 |
|
return ccs_write_answer(head); |
2808 |
|
case CCS_MANAGER: |
2809 |
|
return ccs_write_manager(head); |
2810 |
|
default: |
2811 |
|
return -ENOSYS; |
2812 |
|
} |
2813 |
|
} |
2814 |
|
|
2815 |
|
/** |
2816 |
* ccs_write_control - write() for /proc/ccs/ interface. |
* ccs_write_control - write() for /proc/ccs/ interface. |
2817 |
* |
* |
2818 |
* @file: Pointer to "struct file". |
* @head: Pointer to "struct ccs_io_buffer". |
2819 |
* @buffer: Pointer to buffer to read from. |
* @buffer: Pointer to buffer to read from. |
2820 |
* @buffer_len: Size of @buffer. |
* @buffer_len: Size of @buffer. |
2821 |
* |
* |
2822 |
* Returns @buffer_len on success, negative value otherwise. |
* Returns @buffer_len on success, negative value otherwise. |
2823 |
*/ |
*/ |
2824 |
int ccs_write_control(struct file *file, const char __user *buffer, |
ssize_t ccs_write_control(struct ccs_io_buffer *head, |
2825 |
const int buffer_len) |
const char __user *buffer, const size_t buffer_len) |
2826 |
{ |
{ |
|
struct ccs_io_buffer *head = file->private_data; |
|
2827 |
int error = buffer_len; |
int error = buffer_len; |
2828 |
int avail_len = buffer_len; |
size_t avail_len = buffer_len; |
2829 |
char *cp0 = head->write_buf; |
char *cp0 = head->write_buf; |
2830 |
int idx; |
int idx; |
|
if (!head->write) |
|
|
return -ENOSYS; |
|
2831 |
if (!access_ok(VERIFY_READ, buffer, buffer_len)) |
if (!access_ok(VERIFY_READ, buffer, buffer_len)) |
2832 |
return -EFAULT; |
return -EFAULT; |
2833 |
if (mutex_lock_interruptible(&head->io_sem)) |
if (mutex_lock_interruptible(&head->io_sem)) |
2834 |
return -EINTR; |
return -EINTR; |
2835 |
idx = ccs_read_lock(); |
idx = ccs_read_lock(); |
|
/* Don't allow updating policies by non manager programs. */ |
|
|
if (head->write != ccs_write_pid && head->write != ccs_write_domain && |
|
|
!ccs_manager()) { |
|
|
ccs_read_unlock(idx); |
|
|
mutex_unlock(&head->io_sem); |
|
|
return -EPERM; |
|
|
} |
|
2836 |
/* Read a line and dispatch it to the policy handler. */ |
/* Read a line and dispatch it to the policy handler. */ |
2837 |
while (avail_len > 0) { |
while (avail_len > 0) { |
2838 |
char c; |
char c; |
2861 |
cp0[head->w.avail - 1] = '\0'; |
cp0[head->w.avail - 1] = '\0'; |
2862 |
head->w.avail = 0; |
head->w.avail = 0; |
2863 |
ccs_normalize_line(cp0); |
ccs_normalize_line(cp0); |
2864 |
if (head->write(head)) |
if (!strcmp(cp0, "reset")) { |
2865 |
|
head->w.ns = &ccs_kernel_namespace; |
2866 |
|
head->w.domain = NULL; |
2867 |
|
memset(&head->r, 0, sizeof(head->r)); |
2868 |
continue; |
continue; |
2869 |
|
} |
2870 |
|
/* Don't allow updating policies by non manager programs. */ |
2871 |
switch (head->type) { |
switch (head->type) { |
2872 |
|
case CCS_PROCESS_STATUS: |
2873 |
|
/* This does not write anything. */ |
2874 |
|
break; |
2875 |
case CCS_DOMAINPOLICY: |
case CCS_DOMAINPOLICY: |
2876 |
|
if (ccs_select_domain(head, cp0)) |
2877 |
|
continue; |
2878 |
|
/* fall through */ |
2879 |
case CCS_EXCEPTIONPOLICY: |
case CCS_EXCEPTIONPOLICY: |
2880 |
case CCS_DOMAIN_STATUS: |
if (!strcmp(cp0, "select transition_only")) { |
2881 |
case CCS_MEMINFO: |
head->r.print_transition_related_only = true; |
2882 |
case CCS_PROFILE: |
continue; |
2883 |
case CCS_MANAGER: |
} |
2884 |
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
/* fall through */ |
2885 |
|
default: |
2886 |
|
if (!ccs_manager()) { |
2887 |
|
error = -EPERM; |
2888 |
|
goto out; |
2889 |
|
} |
2890 |
|
} |
2891 |
|
switch (ccs_parse_policy(head, cp0)) { |
2892 |
|
case -EPERM: |
2893 |
|
error = -EPERM; |
2894 |
|
goto out; |
2895 |
|
case 0: |
2896 |
|
/* Update statistics. */ |
2897 |
|
switch (head->type) { |
2898 |
|
case CCS_DOMAINPOLICY: |
2899 |
|
case CCS_EXCEPTIONPOLICY: |
2900 |
|
case CCS_STAT: |
2901 |
|
case CCS_PROFILE: |
2902 |
|
case CCS_MANAGER: |
2903 |
|
ccs_update_stat(CCS_STAT_POLICY_UPDATES); |
2904 |
|
break; |
2905 |
|
default: |
2906 |
|
break; |
2907 |
|
} |
2908 |
|
break; |
2909 |
} |
} |
2910 |
} |
} |
2911 |
|
out: |
2912 |
ccs_read_unlock(idx); |
ccs_read_unlock(idx); |
2913 |
mutex_unlock(&head->io_sem); |
mutex_unlock(&head->io_sem); |
2914 |
return error; |
return error; |
2917 |
/** |
/** |
2918 |
* ccs_close_control - close() for /proc/ccs/ interface. |
* ccs_close_control - close() for /proc/ccs/ interface. |
2919 |
* |
* |
2920 |
* @file: Pointer to "struct file". |
* @head: Pointer to "struct ccs_io_buffer". |
2921 |
* |
* |
2922 |
* Releases memory and returns 0. |
* Returns 0. |
2923 |
*/ |
*/ |
2924 |
int ccs_close_control(struct file *file) |
int ccs_close_control(struct ccs_io_buffer *head) |
2925 |
{ |
{ |
|
struct ccs_io_buffer *head = file->private_data; |
|
|
const bool is_write = head->write_buf != NULL; |
|
|
const u8 type = head->type; |
|
2926 |
/* |
/* |
2927 |
* If the file is /proc/ccs/query , decrement the observer counter. |
* If the file is /proc/ccs/query, decrement the observer counter. |
2928 |
*/ |
*/ |
2929 |
if (type == CCS_QUERY) { |
if (head->type == CCS_QUERY && |
2930 |
if (atomic_dec_and_test(&ccs_query_observers)) |
atomic_dec_and_test(&ccs_query_observers)) |
2931 |
wake_up_all(&ccs_answer_wait); |
wake_up_all(&ccs_answer_wait); |
2932 |
} else if (type != CCS_GRANTLOG && type != CCS_REJECTLOG) |
ccs_notify_gc(head, false); |
|
ccs_unlock(head->reader_idx); |
|
|
/* Release memory used for policy I/O. */ |
|
|
kfree(head->read_buf); |
|
|
head->read_buf = NULL; |
|
|
kfree(head->write_buf); |
|
|
head->write_buf = NULL; |
|
|
kfree(head); |
|
|
head = NULL; |
|
|
file->private_data = NULL; |
|
|
if (is_write) |
|
|
ccs_run_gc(); |
|
2933 |
return 0; |
return 0; |
2934 |
} |
} |
2935 |
|
|
2936 |
|
/** |
2937 |
|
* ccs_policy_io_init - Register hooks for policy I/O. |
2938 |
|
* |
2939 |
|
* Returns nothing. |
2940 |
|
*/ |
2941 |
void __init ccs_policy_io_init(void) |
void __init ccs_policy_io_init(void) |
2942 |
{ |
{ |
2943 |
ccsecurity_ops.check_profile = ccs_check_profile; |
ccsecurity_ops.check_profile = ccs_check_profile; |
2944 |
} |
} |
2945 |
|
|
2946 |
|
/** |
2947 |
|
* ccs_load_builtin_policy - Load built-in policy. |
2948 |
|
* |
2949 |
|
* Returns nothing. |
2950 |
|
*/ |
2951 |
|
void __init ccs_load_builtin_policy(void) |
2952 |
|
{ |
2953 |
|
/* |
2954 |
|
* This include file is manually created and contains built-in policy |
2955 |
|
* named "ccs_builtin_profile", "ccs_builtin_exception_policy", |
2956 |
|
* "ccs_builtin_domain_policy", "ccs_builtin_manager", |
2957 |
|
* "ccs_builtin_stat" in the form of "static char [] __initdata". |
2958 |
|
*/ |
2959 |
|
#include "builtin-policy.h" |
2960 |
|
u8 i; |
2961 |
|
const int idx = ccs_read_lock(); |
2962 |
|
for (i = 0; i < 5; i++) { |
2963 |
|
struct ccs_io_buffer head = { }; |
2964 |
|
char *start = ""; |
2965 |
|
switch (i) { |
2966 |
|
case 0: |
2967 |
|
start = ccs_builtin_profile; |
2968 |
|
head.type = CCS_PROFILE; |
2969 |
|
break; |
2970 |
|
case 1: |
2971 |
|
start = ccs_builtin_exception_policy; |
2972 |
|
head.type = CCS_EXCEPTIONPOLICY; |
2973 |
|
break; |
2974 |
|
case 2: |
2975 |
|
start = ccs_builtin_domain_policy; |
2976 |
|
head.type = CCS_DOMAINPOLICY; |
2977 |
|
break; |
2978 |
|
case 3: |
2979 |
|
start = ccs_builtin_manager; |
2980 |
|
head.type = CCS_MANAGER; |
2981 |
|
break; |
2982 |
|
case 4: |
2983 |
|
start = ccs_builtin_stat; |
2984 |
|
head.type = CCS_STAT; |
2985 |
|
break; |
2986 |
|
} |
2987 |
|
while (1) { |
2988 |
|
char *end = strchr(start, '\n'); |
2989 |
|
if (!end) |
2990 |
|
break; |
2991 |
|
*end = '\0'; |
2992 |
|
ccs_normalize_line(start); |
2993 |
|
head.write_buf = start; |
2994 |
|
ccs_parse_policy(&head, start); |
2995 |
|
start = end + 1; |
2996 |
|
} |
2997 |
|
} |
2998 |
|
ccs_read_unlock(idx); |
2999 |
|
#ifdef CONFIG_CCSECURITY_OMIT_USERSPACE_LOADER |
3000 |
|
ccs_check_profile(); |
3001 |
|
#endif |
3002 |
|
} |