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/* |
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* include/linux/ccs_common.h |
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* |
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* Common functions for SAKURA and TOMOYO. |
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* |
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* Copyright (C) 2005-2007 NTT DATA CORPORATION |
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* |
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* Version: 1.5.0 2007/09/20 |
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* |
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* This file is applicable to both 2.4.30 and 2.6.11 and later. |
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* See README.ccs for ChangeLog. |
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* |
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*/ |
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|
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#ifndef _LINUX_CCS_COMMON_H |
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#define _LINUX_CCS_COMMON_H |
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|
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#include <linux/string.h> |
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#include <linux/mm.h> |
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#include <linux/utime.h> |
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#include <linux/file.h> |
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#include <linux/smp_lock.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/poll.h> |
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#include <asm/uaccess.h> |
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#include <stdarg.h> |
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#include <linux/delay.h> |
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#include <linux/version.h> |
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) |
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#include <linux/kmod.h> |
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#endif |
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|
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#ifndef __user |
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#define __user |
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#endif |
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|
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struct mini_stat { |
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uid_t uid; |
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gid_t gid; |
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ino_t ino; |
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}; |
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struct dentry; |
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struct vfsmount; |
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struct obj_info { |
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u8 validate_done; |
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u8 path1_valid; |
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u8 path1_parent_valid; |
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u8 path2_parent_valid; |
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struct dentry *path1_dentry; |
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struct vfsmount *path1_vfsmnt; |
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struct dentry *path2_dentry; |
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struct vfsmount *path2_vfsmnt; |
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struct mini_stat path1_stat; |
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/* I don't handle path2_stat for rename operation. */ |
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struct mini_stat path1_parent_stat; |
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struct mini_stat path2_parent_stat; |
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}; |
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|
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struct path_info { |
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const char *name; |
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u32 hash; /* = full_name_hash(name, strlen(name)) */ |
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u16 total_len; /* = strlen(name) */ |
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u16 const_len; /* = const_part_length(name) */ |
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u8 is_dir; /* = strendswith(name, "/") */ |
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u8 is_patterned; /* = PathContainsPattern(name) */ |
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u16 depth; /* = PathDepth(name) */ |
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}; |
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|
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#define CCS_MAX_PATHNAME_LEN 4000 |
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|
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struct group_member { |
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struct group_member *next; |
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const struct path_info *member_name; |
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int is_deleted; |
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}; |
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|
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struct group_entry { |
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struct group_entry *next; |
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const struct path_info *group_name; |
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struct group_member *first_member; |
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}; |
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|
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struct address_group_member { |
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struct address_group_member *next; |
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union { |
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u32 ipv4; /* Host byte order */ |
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u16 ipv6[8]; /* Network byte order */ |
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} min, max; |
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u8 is_deleted; |
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u8 is_ipv6; |
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}; |
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|
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struct address_group_entry { |
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struct address_group_entry *next; |
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const struct path_info *group_name; |
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struct address_group_member *first_member; |
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}; |
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|
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/* |
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* TOMOYO uses the following structures. |
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* Memory allocated for these structures are never kfree()ed. |
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* Since no locks are used for reading, assignment must be performed atomically. |
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*/ |
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|
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/************************* The structure for domains. *************************/ |
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|
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struct condition_list; |
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|
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struct acl_info { |
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struct acl_info *next; |
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const struct condition_list *cond; |
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u8 type; |
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u8 is_deleted; |
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} __attribute__((__packed__)); |
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|
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struct domain_info { |
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struct domain_info *next; /* Pointer to next record. NULL if none. */ |
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struct acl_info *first_acl_ptr; /* Pointer to first acl. NULL if none. */ |
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const struct path_info *domainname; /* Name of this domain. Never NULL. */ |
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u8 profile; /* Profile to use. */ |
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u8 is_deleted; /* Delete flag. */ |
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u8 quota_warned; /* Quota warnning done flag. */ |
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}; |
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|
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#define MAX_PROFILES 256 |
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|
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struct file_acl_record { |
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struct acl_info head; /* type = TYPE_FILE_ACL */ |
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u8 perm; |
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u8 u_is_group; |
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union { |
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const struct path_info *filename; /* Pointer to single pathname. */ |
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const struct group_entry *group; /* Pointer to pathname group. */ |
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} u; |
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}; |
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|
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struct argv0_acl_record { |
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struct acl_info head; /* type = TYPE_ARGV0_ACL */ |
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const struct path_info *filename; /* Pointer to single pathname. */ |
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const struct path_info *argv0; /* strrchr(argv[0], '/') + 1 */ |
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}; |
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|
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struct capability_acl_record { |
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struct acl_info head; /* type = TYPE_CAPABILITY_ACL */ |
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u16 capability; |
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}; |
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|
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struct signal_acl_record { |
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struct acl_info head; /* type = TYPE_SIGNAL_ACL */ |
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u16 sig; |
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const struct path_info *domainname; /* Pointer to destination pattern. */ |
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}; |
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|
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struct single_acl_record { |
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struct acl_info head; /* type = TYPE_* */ |
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u8 u_is_group; |
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union { |
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const struct path_info *filename; /* Pointer to single pathname. */ |
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const struct group_entry *group; /* Pointer to pathname group. */ |
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} u; |
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}; |
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|
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struct double_acl_record { |
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struct acl_info head; /* type = TYPE_RENAME_ACL or TYPE_LINK_ACL */ |
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u8 u1_is_group; |
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u8 u2_is_group; |
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union { |
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const struct path_info *filename1; /* Pointer to single pathname. */ |
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const struct group_entry *group1; /* Pointer to pathname group. */ |
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} u1; |
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union { |
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const struct path_info *filename2; /* Pointer to single pathname. */ |
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const struct group_entry *group2; /* Pointer to pathname group. */ |
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} u2; |
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}; |
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|
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#define IP_RECORD_TYPE_ADDRESS_GROUP 0 |
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#define IP_RECORD_TYPE_IPv4 1 |
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#define IP_RECORD_TYPE_IPv6 2 |
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|
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struct ip_network_acl_record { |
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struct acl_info head; /* type = TYPE_IP_NETWORK_ACL */ |
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u8 operation_type; |
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u8 record_type; /* IP_RECORD_TYPE_* */ |
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union { |
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struct { |
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u32 min; /* Start of IPv4 address range. Host endian. */ |
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u32 max; /* End of IPv4 address range. Host endian. */ |
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} ipv4; |
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struct { |
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u16 min[8]; /* Start of IPv6 address range. Big endian. */ |
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u16 max[8]; /* End of IPv6 address range. Big endian. */ |
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} ipv6; |
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const struct address_group_entry *group; /* Pointer to address group. */ |
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} u; |
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u16 min_port; /* Start of port number range. */ |
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u16 max_port; /* End of port number range. */ |
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}; |
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|
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/************************* Keywords for ACLs. *************************/ |
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|
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#define KEYWORD_ADDRESS_GROUP "address_group " |
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#define KEYWORD_ADDRESS_GROUP_LEN (sizeof(KEYWORD_ADDRESS_GROUP) - 1) |
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#define KEYWORD_AGGREGATOR "aggregator " |
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#define KEYWORD_AGGREGATOR_LEN (sizeof(KEYWORD_AGGREGATOR) - 1) |
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#define KEYWORD_ALIAS "alias " |
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#define KEYWORD_ALIAS_LEN (sizeof(KEYWORD_ALIAS) - 1) |
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#define KEYWORD_ALLOW_ARGV0 "allow_argv0 " |
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#define KEYWORD_ALLOW_ARGV0_LEN (sizeof(KEYWORD_ALLOW_ARGV0) - 1) |
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#define KEYWORD_ALLOW_CAPABILITY "allow_capability " |
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#define KEYWORD_ALLOW_CAPABILITY_LEN (sizeof(KEYWORD_ALLOW_CAPABILITY) - 1) |
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#define KEYWORD_ALLOW_CHROOT "allow_chroot " |
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#define KEYWORD_ALLOW_CHROOT_LEN (sizeof(KEYWORD_ALLOW_CHROOT) - 1) |
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#define KEYWORD_ALLOW_MOUNT "allow_mount " |
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#define KEYWORD_ALLOW_MOUNT_LEN (sizeof(KEYWORD_ALLOW_MOUNT) - 1) |
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#define KEYWORD_ALLOW_NETWORK "allow_network " |
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#define KEYWORD_ALLOW_NETWORK_LEN (sizeof(KEYWORD_ALLOW_NETWORK) - 1) |
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#define KEYWORD_ALLOW_PIVOT_ROOT "allow_pivot_root " |
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#define KEYWORD_ALLOW_PIVOT_ROOT_LEN (sizeof(KEYWORD_ALLOW_PIVOT_ROOT) - 1) |
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#define KEYWORD_ALLOW_READ "allow_read " |
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#define KEYWORD_ALLOW_READ_LEN (sizeof(KEYWORD_ALLOW_READ) - 1) |
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#define KEYWORD_ALLOW_SIGNAL "allow_signal " |
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#define KEYWORD_ALLOW_SIGNAL_LEN (sizeof(KEYWORD_ALLOW_SIGNAL) - 1) |
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#define KEYWORD_DELETE "delete " |
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#define KEYWORD_DELETE_LEN (sizeof(KEYWORD_DELETE) - 1) |
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#define KEYWORD_DENY_AUTOBIND "deny_autobind " |
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#define KEYWORD_DENY_AUTOBIND_LEN (sizeof(KEYWORD_DENY_AUTOBIND) - 1) |
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#define KEYWORD_DENY_REWRITE "deny_rewrite " |
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#define KEYWORD_DENY_REWRITE_LEN (sizeof(KEYWORD_DENY_REWRITE) - 1) |
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#define KEYWORD_DENY_UNMOUNT "deny_unmount " |
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#define KEYWORD_DENY_UNMOUNT_LEN (sizeof(KEYWORD_DENY_UNMOUNT) - 1) |
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#define KEYWORD_FILE_PATTERN "file_pattern " |
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#define KEYWORD_FILE_PATTERN_LEN (sizeof(KEYWORD_FILE_PATTERN) - 1) |
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#define KEYWORD_INITIALIZE_DOMAIN "initialize_domain " |
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#define KEYWORD_INITIALIZE_DOMAIN_LEN (sizeof(KEYWORD_INITIALIZE_DOMAIN) - 1) |
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#define KEYWORD_KEEP_DOMAIN "keep_domain " |
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#define KEYWORD_KEEP_DOMAIN_LEN (sizeof(KEYWORD_KEEP_DOMAIN) - 1) |
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#define KEYWORD_NO_INITIALIZE_DOMAIN "no_initialize_domain " |
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#define KEYWORD_NO_INITIALIZE_DOMAIN_LEN (sizeof(KEYWORD_NO_INITIALIZE_DOMAIN) - 1) |
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#define KEYWORD_NO_KEEP_DOMAIN "no_keep_domain " |
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#define KEYWORD_NO_KEEP_DOMAIN_LEN (sizeof(KEYWORD_NO_KEEP_DOMAIN) - 1) |
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#define KEYWORD_PATH_GROUP "path_group " |
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#define KEYWORD_PATH_GROUP_LEN (sizeof(KEYWORD_PATH_GROUP) - 1) |
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#define KEYWORD_SELECT "select " |
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#define KEYWORD_SELECT_LEN (sizeof(KEYWORD_SELECT) - 1) |
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#define KEYWORD_UNDELETE "undelete " |
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#define KEYWORD_UNDELETE_LEN (sizeof(KEYWORD_UNDELETE) - 1) |
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|
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#define KEYWORD_USE_PROFILE "use_profile " |
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|
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#define KEYWORD_MAC_FOR_CAPABILITY "MAC_FOR_CAPABILITY::" |
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#define KEYWORD_MAC_FOR_CAPABILITY_LEN (sizeof(KEYWORD_MAC_FOR_CAPABILITY) - 1) |
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|
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#define ROOT_NAME "<kernel>" /* A domain definition starts with <kernel> . */ |
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#define ROOT_NAME_LEN (sizeof(ROOT_NAME) - 1) |
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|
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/************************* Index numbers for Access Controls. *************************/ |
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|
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#define CCS_PROFILE_COMMENT 0 /* profile.conf */ |
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#define CCS_TOMOYO_MAC_FOR_FILE 1 /* domain_policy.conf */ |
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#define CCS_TOMOYO_MAC_FOR_ARGV0 2 /* domain_policy.conf */ |
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#define CCS_TOMOYO_MAC_FOR_NETWORK 3 /* domain_policy.conf */ |
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#define CCS_TOMOYO_MAC_FOR_SIGNAL 4 /* domain_policy.conf */ |
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#define CCS_SAKURA_DENY_CONCEAL_MOUNT 5 |
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#define CCS_SAKURA_RESTRICT_CHROOT 6 /* system_policy.conf */ |
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#define CCS_SAKURA_RESTRICT_MOUNT 7 /* system_policy.conf */ |
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#define CCS_SAKURA_RESTRICT_UNMOUNT 8 /* system_policy.conf */ |
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#define CCS_SAKURA_RESTRICT_PIVOT_ROOT 9 /* system_policy.conf */ |
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#define CCS_SAKURA_RESTRICT_AUTOBIND 10 /* system_policy.conf */ |
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#define CCS_TOMOYO_MAX_ACCEPT_ENTRY 11 |
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#define CCS_TOMOYO_MAX_GRANT_LOG 12 |
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#define CCS_TOMOYO_MAX_REJECT_LOG 13 |
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#define CCS_TOMOYO_VERBOSE 14 |
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#define CCS_ALLOW_ENFORCE_GRACE 15 |
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#define CCS_MAX_CONTROL_INDEX 16 |
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|
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/************************* Index numbers for updates counter. *************************/ |
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|
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#define CCS_UPDATES_COUNTER_SYSTEM_POLICY 0 |
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#define CCS_UPDATES_COUNTER_DOMAIN_POLICY 1 |
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#define CCS_UPDATES_COUNTER_EXCEPTION_POLICY 2 |
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#define CCS_UPDATES_COUNTER_PROFILE 3 |
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#define CCS_UPDATES_COUNTER_QUERY 4 |
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#define CCS_UPDATES_COUNTER_MANAGER 5 |
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#define CCS_UPDATES_COUNTER_GRANT_LOG 6 |
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#define CCS_UPDATES_COUNTER_REJECT_LOG 7 |
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#define MAX_CCS_UPDATES_COUNTER 8 |
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|
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/************************* The structure for /proc interfaces. *************************/ |
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|
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struct io_buffer { |
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int (*read) (struct io_buffer *); |
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struct semaphore read_sem; |
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int (*write) (struct io_buffer *); |
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struct semaphore write_sem; |
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int (*poll) (struct file *file, poll_table *wait); |
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void *read_var1; /* The position currently reading from. */ |
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void *read_var2; /* Extra variables for reading. */ |
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struct domain_info *write_var1; /* The position currently writing to. */ |
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int read_step; /* The step for reading. */ |
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char *read_buf; /* Buffer for reading. */ |
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int read_eof; /* EOF flag for reading. */ |
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int read_avail; /* Bytes available for reading. */ |
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int readbuf_size; /* Size of read buffer. */ |
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char *write_buf; /* Buffer for writing. */ |
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int write_avail; /* Bytes available for writing. */ |
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int writebuf_size; /* Size of write buffer. */ |
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}; |
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|
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/************************* PROTOTYPES *************************/ |
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|
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char *FindConditionPart(char *data); |
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char *InitAuditLog(int *len); |
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void *ccs_alloc(const size_t size); |
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char *print_ipv6(char *buffer, const int buffer_len, const u16 *ip); |
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const char *GetEXE(void); |
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const char *GetLastName(const struct domain_info *domain); |
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const char *GetMSG(const int is_enforce); |
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const char *acltype2keyword(const unsigned int acl_type); |
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const char *capability2keyword(const unsigned int capability); |
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const char *network2keyword(const unsigned int operation); |
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const struct condition_list *FindOrAssignNewCondition(const char *condition); |
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int AddAddressGroupPolicy(char *data, const int is_delete); |
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int AddAggregatorPolicy(char *data, const int is_delete); |
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int AddAliasPolicy(char *data, const int is_delete); |
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int AddArgv0Policy(char *data, struct domain_info *domain, const int is_delete); |
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int AddCapabilityPolicy(char *data, struct domain_info *domain, const int is_delete); |
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int AddChrootPolicy(char *data, const int is_delete); |
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int AddDomainACL(struct acl_info *ptr, struct domain_info *domain, struct acl_info *new_ptr); |
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int AddDomainInitializerPolicy(char *data, const int is_not, const int is_delete); |
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int AddDomainKeeperPolicy(char *data, const int is_not, const int is_delete); |
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int AddFilePolicy(char *data, struct domain_info *domain, const int is_delete); |
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int AddGloballyReadablePolicy(char *data, const int is_delete); |
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int AddGroupPolicy(char *data, const int is_delete); |
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int AddMountPolicy(char *data, const int is_delete); |
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int AddNetworkPolicy(char *data, struct domain_info *domain, const int is_delete); |
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int AddNoRewritePolicy(char *pattern, const int is_delete); |
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int AddNoUmountPolicy(char *data, const int is_delete); |
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int AddPatternPolicy(char *data, const int is_delete); |
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int AddPivotRootPolicy(char *data, const int is_delete); |
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int AddReservedPortPolicy(char *data, const int is_delete); |
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int AddSignalPolicy(char *data, struct domain_info *domain, const int is_delete); |
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int CCS_CloseControl(struct file *file); |
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int CCS_OpenControl(const int type, struct file *file); |
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int CCS_PollControl(struct file *file, poll_table *wait); |
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int CCS_ReadControl(struct file *file, char __user *buffer, const int buffer_len); |
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int CCS_WriteControl(struct file *file, const char __user *buffer, const int buffer_len); |
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int CanSaveAuditLog(const int is_granted); |
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int CheckCondition(const struct condition_list *condition, struct obj_info *obj_info); |
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int CheckSupervisor(const char *fmt, ...) __attribute__ ((format(printf, 1, 2))); |
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int DelDomainACL(struct acl_info *ptr); |
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int DeleteDomain(char *data); |
355 |
int DumpCondition(struct io_buffer *head, const struct condition_list *ptr); |
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int IsCorrectDomain(const unsigned char *domainname, const char *function); |
357 |
int IsCorrectPath(const char *filename, const int start_type, const int pattern_type, const int end_type, const char *function); |
358 |
int IsDomainDef(const unsigned char *buffer); |
359 |
int PathMatchesToPattern(const struct path_info *pathname0, const struct path_info *pattern0); |
360 |
int PollGrantLog(struct file *file, poll_table *wait); |
361 |
int PollRejectLog(struct file *file, poll_table *wait); |
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int ReadAddressGroupPolicy(struct io_buffer *head); |
363 |
int ReadAggregatorPolicy(struct io_buffer *head); |
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int ReadAliasPolicy(struct io_buffer *head); |
365 |
int ReadCapabilityStatus(struct io_buffer *head); |
366 |
int ReadChrootPolicy(struct io_buffer *head); |
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int ReadDomainInitializerPolicy(struct io_buffer *head); |
368 |
int ReadDomainKeeperPolicy(struct io_buffer *head); |
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int ReadGloballyReadablePolicy(struct io_buffer *head); |
370 |
int ReadGrantLog(struct io_buffer *head); |
371 |
int ReadGroupPolicy(struct io_buffer *head); |
372 |
int ReadMountPolicy(struct io_buffer *head); |
373 |
int ReadNoRewritePolicy(struct io_buffer *head); |
374 |
int ReadNoUmountPolicy(struct io_buffer *head); |
375 |
int ReadPatternPolicy(struct io_buffer *head); |
376 |
int ReadPivotRootPolicy(struct io_buffer *head); |
377 |
int ReadRejectLog(struct io_buffer *head); |
378 |
int ReadReservedPortPolicy(struct io_buffer *head); |
379 |
int SetCapabilityStatus(const char *data, unsigned int value, const unsigned int profile); |
380 |
int TooManyDomainACL(struct domain_info * const domain); |
381 |
int WriteAuditLog(char *log, const int is_granted); |
382 |
int acltype2paths(const unsigned int acl_type); |
383 |
int io_printf(struct io_buffer *head, const char *fmt, ...) __attribute__ ((format(printf, 2, 3))); |
384 |
struct domain_info *FindDomain(const char *domainname); |
385 |
struct domain_info *FindOrAssignNewDomain(const char *domainname, const u8 profile); |
386 |
struct domain_info *UndeleteDomain(const char *domainname0); |
387 |
unsigned int CheckCCSAccept(const unsigned int index); |
388 |
unsigned int CheckCCSEnforce(const unsigned int index); |
389 |
unsigned int CheckCCSFlags(const unsigned int index); |
390 |
unsigned int TomoyoVerboseMode(void); |
391 |
void UpdateCounter(const unsigned char index); |
392 |
void ccs_free(const void *p); |
393 |
void fill_path_info(struct path_info *ptr); |
394 |
|
395 |
static inline int pathcmp(const struct path_info *a, const struct path_info *b) |
396 |
{ |
397 |
return a->hash != b->hash || strcmp(a->name, b->name); |
398 |
} |
399 |
#endif |