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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134/* SPDX-License-Identifier: GPL-2.0-only *//* * AppArmor security module * * This file contains AppArmor file mediation function definitions. * * Copyright (C) 1998-2008 Novell/SUSE * Copyright 2009-2010 Canonical Ltd. */
#ifndef __AA_FILE_H#define __AA_FILE_H
#include <linux/spinlock.h>
#include "domain.h"#include "match.h"#include "perms.h"
struct aa_policydb;struct aa_profile;struct path;
#define mask_mode_t(X) (X & (MAY_EXEC | MAY_WRITE | MAY_READ | MAY_APPEND))
#define AA_AUDIT_FILE_MASK (MAY_READ | MAY_WRITE | MAY_EXEC | MAY_APPEND |\ AA_MAY_CREATE | AA_MAY_DELETE | \ AA_MAY_GETATTR | AA_MAY_SETATTR | \ AA_MAY_CHMOD | AA_MAY_CHOWN | AA_MAY_LOCK | \ AA_EXEC_MMAP | AA_MAY_LINK)
static inline struct aa_file_ctx *file_ctx(struct file *file){ return file->f_security + apparmor_blob_sizes.lbs_file;}
/* struct aa_file_ctx - the AppArmor context the file was opened in * @lock: lock to update the ctx * @label: label currently cached on the ctx * @perms: the permission the file was opened with */struct aa_file_ctx { spinlock_t lock; struct aa_label __rcu *label; u32 allow;};
/* * 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 AA_INDEX_MASK
#define AA_X_TYPE_MASK 0x0c000000#define AA_X_NONE AA_INDEX_NONE#define AA_X_NAME 0x04000000 /* use executable name px */#define AA_X_TABLE 0x08000000 /* use a specified name ->n# */
#define AA_X_UNSAFE 0x10000000#define AA_X_CHILD 0x20000000#define AA_X_INHERIT 0x40000000#define AA_X_UNCONFINED 0x80000000
/* need to make conditional which ones are being set */struct path_cond { kuid_t uid; umode_t mode;};
#define COMBINED_PERM_MASK(X) ((X).allow | (X).audit | (X).quiet | (X).kill)
int aa_audit_file(const struct cred *cred, struct aa_profile *profile, const struct aa_perms *perms, const char *op, u32 request, const char *name, const char *target, struct aa_label *tlabel, kuid_t ouid, const char *info, int error);
struct aa_perms *aa_lookup_condperms(kuid_t subj_uid, struct aa_policydb *file_rules, aa_state_t state, struct path_cond *cond);aa_state_t aa_str_perms(struct aa_policydb *file_rules, aa_state_t start, const char *name, struct path_cond *cond, struct aa_perms *perms);
int __aa_path_perm(const char *op, const struct cred *subj_cred, struct aa_profile *profile, const char *name, u32 request, struct path_cond *cond, int flags, struct aa_perms *perms);int aa_path_perm(const char *op, const struct cred *subj_cred, struct aa_label *label, const struct path *path, int flags, u32 request, struct path_cond *cond);
int aa_path_link(const struct cred *subj_cred, struct aa_label *label, struct dentry *old_dentry, const struct path *new_dir, struct dentry *new_dentry);
int aa_file_perm(const char *op, const struct cred *subj_cred, struct aa_label *label, struct file *file, u32 request, bool in_atomic);
void aa_inherit_files(const struct cred *cred, struct files_struct *files);
/** * aa_map_file_to_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 = file->f_flags; u32 perms = 0;
if (file->f_mode & FMODE_WRITE) perms |= MAY_WRITE; if (file->f_mode & FMODE_READ) perms |= MAY_READ;
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 */