diff options
Diffstat (limited to 'ANDROID_3.4.5/security/apparmor/include/file.h')
| -rw-r--r-- | ANDROID_3.4.5/security/apparmor/include/file.h | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/ANDROID_3.4.5/security/apparmor/include/file.h b/ANDROID_3.4.5/security/apparmor/include/file.h deleted file mode 100644 index f98fd470..00000000 --- a/ANDROID_3.4.5/security/apparmor/include/file.h +++ /dev/null @@ -1,216 +0,0 @@ -/* - * AppArmor security module - * - * This file contains AppArmor file mediation function definitions. - * - * Copyright (C) 1998-2008 Novell/SUSE - * Copyright 2009-2010 Canonical Ltd. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation, version 2 of the - * License. - */ - -#ifndef __AA_FILE_H -#define __AA_FILE_H - -#include "domain.h" -#include "match.h" - -struct aa_profile; -struct path; - -/* - * We use MAY_EXEC, MAY_WRITE, MAY_READ, MAY_APPEND and the following flags - * for profile permissions - */ -#define AA_MAY_CREATE 0x0010 -#define AA_MAY_DELETE 0x0020 -#define AA_MAY_META_WRITE 0x0040 -#define AA_MAY_META_READ 0x0080 - -#define AA_MAY_CHMOD 0x0100 -#define AA_MAY_CHOWN 0x0200 -#define AA_MAY_LOCK 0x0400 -#define AA_EXEC_MMAP 0x0800 - -#define AA_MAY_LINK 0x1000 -#define AA_LINK_SUBSET AA_MAY_LOCK /* overlaid */ -#define AA_MAY_ONEXEC 0x40000000 /* exec allows onexec */ -#define AA_MAY_CHANGE_PROFILE 0x80000000 -#define AA_MAY_CHANGEHAT 0x80000000 /* ctrl auditing only */ - -#define AA_AUDIT_FILE_MASK (MAY_READ | MAY_WRITE | MAY_EXEC | MAY_APPEND |\ - AA_MAY_CREATE | AA_MAY_DELETE | \ - AA_MAY_META_READ | AA_MAY_META_WRITE | \ - AA_MAY_CHMOD | AA_MAY_CHOWN | AA_MAY_LOCK | \ - AA_EXEC_MMAP | AA_MAY_LINK) - -/* - * The xindex is broken into 3 parts - * - index - an index into either the exec name table or the variable table - * - exec type - which determines how the executable name and index are used - * - flags - which modify how the destination name is applied - */ -#define AA_X_INDEX_MASK 0x03ff - -#define AA_X_TYPE_MASK 0x0c00 -#define AA_X_TYPE_SHIFT 10 -#define AA_X_NONE 0x0000 -#define AA_X_NAME 0x0400 /* use executable name px */ -#define AA_X_TABLE 0x0800 /* use a specified name ->n# */ - -#define AA_X_UNSAFE 0x1000 -#define AA_X_CHILD 0x2000 /* make >AA_X_NONE apply to children */ -#define AA_X_INHERIT 0x4000 -#define AA_X_UNCONFINED 0x8000 - -/* AA_SECURE_X_NEEDED - is passed in the bprm->unsafe field */ -#define AA_SECURE_X_NEEDED 0x8000 - -/* need to make conditional which ones are being set */ -struct path_cond { - uid_t uid; - umode_t mode; -}; - -/* struct file_perms - file permission - * @allow: mask of permissions that are allowed - * @audit: mask of permissions to force an audit message for - * @quiet: mask of permissions to quiet audit messages for - * @kill: mask of permissions that when matched will kill the task - * @xindex: exec transition index if @allow contains MAY_EXEC - * - * The @audit and @queit mask should be mutually exclusive. - */ -struct file_perms { - u32 allow; - u32 audit; - u32 quiet; - u32 kill; - u16 xindex; -}; - -extern struct file_perms nullperms; - -#define COMBINED_PERM_MASK(X) ((X).allow | (X).audit | (X).quiet | (X).kill) - -/* FIXME: split perms from dfa and match this to description - * also add delegation info. - */ -static inline u16 dfa_map_xindex(u16 mask) -{ - u16 old_index = (mask >> 10) & 0xf; - u16 index = 0; - - if (mask & 0x100) - index |= AA_X_UNSAFE; - if (mask & 0x200) - index |= AA_X_INHERIT; - if (mask & 0x80) - index |= AA_X_UNCONFINED; - - if (old_index == 1) { - index |= AA_X_UNCONFINED; - } else if (old_index == 2) { - index |= AA_X_NAME; - } else if (old_index == 3) { - index |= AA_X_NAME | AA_X_CHILD; - } else if (old_index) { - index |= AA_X_TABLE; - index |= old_index - 4; - } - - return index; -} - -/* - * map old dfa inline permissions to new format - */ -#define dfa_user_allow(dfa, state) (((ACCEPT_TABLE(dfa)[state]) & 0x7f) | \ - ((ACCEPT_TABLE(dfa)[state]) & 0x80000000)) -#define dfa_user_audit(dfa, state) ((ACCEPT_TABLE2(dfa)[state]) & 0x7f) -#define dfa_user_quiet(dfa, state) (((ACCEPT_TABLE2(dfa)[state]) >> 7) & 0x7f) -#define dfa_user_xindex(dfa, state) \ - (dfa_map_xindex(ACCEPT_TABLE(dfa)[state] & 0x3fff)) - -#define dfa_other_allow(dfa, state) ((((ACCEPT_TABLE(dfa)[state]) >> 14) & \ - 0x7f) | \ - ((ACCEPT_TABLE(dfa)[state]) & 0x80000000)) -#define dfa_other_audit(dfa, state) (((ACCEPT_TABLE2(dfa)[state]) >> 14) & 0x7f) -#define dfa_other_quiet(dfa, state) \ - ((((ACCEPT_TABLE2(dfa)[state]) >> 7) >> 14) & 0x7f) -#define dfa_other_xindex(dfa, state) \ - dfa_map_xindex((ACCEPT_TABLE(dfa)[state] >> 14) & 0x3fff) - -int aa_audit_file(struct aa_profile *profile, struct file_perms *perms, - gfp_t gfp, int op, u32 request, const char *name, - const char *target, uid_t ouid, const char *info, int error); - -/** - * struct aa_file_rules - components used for file rule permissions - * @dfa: dfa to match path names and conditionals against - * @perms: permission table indexed by the matched state accept entry of @dfa - * @trans: transition table for indexed by named x transitions - * - * File permission are determined by matching a path against @dfa and then - * then using the value of the accept entry for the matching state as - * an index into @perms. If a named exec transition is required it is - * looked up in the transition table. - */ -struct aa_file_rules { - unsigned int start; - struct aa_dfa *dfa; - /* struct perms perms; */ - struct aa_domain trans; - /* TODO: add delegate table */ -}; - -unsigned int aa_str_perms(struct aa_dfa *dfa, unsigned int start, - const char *name, struct path_cond *cond, - struct file_perms *perms); - -int aa_path_perm(int op, struct aa_profile *profile, struct path *path, - int flags, u32 request, struct path_cond *cond); - -int aa_path_link(struct aa_profile *profile, struct dentry *old_dentry, - struct path *new_dir, struct dentry *new_dentry); - -int aa_file_perm(int op, struct aa_profile *profile, struct file *file, - u32 request); - -static inline void aa_free_file_rules(struct aa_file_rules *rules) -{ - aa_put_dfa(rules->dfa); - aa_free_domain_entries(&rules->trans); -} - -#define ACC_FMODE(x) (("\000\004\002\006"[(x)&O_ACCMODE]) | (((x) << 1) & 0x40)) - -/* from namei.c */ -#define MAP_OPEN_FLAGS(x) ((((x) + 1) & O_ACCMODE) ? (x) + 1 : (x)) - -/** - * aa_map_file_perms - map file flags to AppArmor permissions - * @file: open file to map flags to AppArmor permissions - * - * Returns: apparmor permission set for the file - */ -static inline u32 aa_map_file_to_perms(struct file *file) -{ - int flags = MAP_OPEN_FLAGS(file->f_flags); - u32 perms = ACC_FMODE(file->f_mode); - - if ((flags & O_APPEND) && (perms & MAY_WRITE)) - perms = (perms & ~MAY_WRITE) | MAY_APPEND; - /* trunc implies write permission */ - if (flags & O_TRUNC) - perms |= MAY_WRITE; - if (flags & O_CREAT) - perms |= AA_MAY_CREATE; - - return perms; -} - -#endif /* __AA_FILE_H */ |