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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2009-10-04 21:49:47 +0900 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-10-12 10:56:00 +1100 |
| commit | 89eda06837094ce9f34fae269b8773fcfd70f046 (patch) | |
| tree | dc11701c68ebcc8346d7567cfb53b9c7327ef445 /security | |
| parent | 941fc5b2bf8f7dd1d0a9c502e152fa719ff6578e (diff) | |
| download | lwn-89eda06837094ce9f34fae269b8773fcfd70f046.tar.gz lwn-89eda06837094ce9f34fae269b8773fcfd70f046.zip | |
LSM: Add security_path_chmod() and security_path_chown().
This patch allows pathname based LSM modules to check chmod()/chown()
operations. Since notify_change() does not receive "struct vfsmount *",
we add security_path_chmod() and security_path_chown() to the caller of
notify_change().
These hooks are used by TOMOYO.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/capability.c | 13 | ||||
| -rw-r--r-- | security/security.c | 15 |
2 files changed, 28 insertions, 0 deletions
diff --git a/security/capability.c b/security/capability.c index fce07a7bc825..09279a8d4a14 100644 --- a/security/capability.c +++ b/security/capability.c @@ -308,6 +308,17 @@ static int cap_path_truncate(struct path *path, loff_t length, { return 0; } + +static int cap_path_chmod(struct dentry *dentry, struct vfsmount *mnt, + mode_t mode) +{ + return 0; +} + +static int cap_path_chown(struct path *path, uid_t uid, gid_t gid) +{ + return 0; +} #endif static int cap_file_permission(struct file *file, int mask) @@ -977,6 +988,8 @@ void security_fixup_ops(struct security_operations *ops) set_to_cap_if_null(ops, path_link); set_to_cap_if_null(ops, path_rename); set_to_cap_if_null(ops, path_truncate); + set_to_cap_if_null(ops, path_chmod); + set_to_cap_if_null(ops, path_chown); #endif set_to_cap_if_null(ops, file_permission); set_to_cap_if_null(ops, file_alloc_security); diff --git a/security/security.c b/security/security.c index c4c673240c1c..5259270e558f 100644 --- a/security/security.c +++ b/security/security.c @@ -434,6 +434,21 @@ int security_path_truncate(struct path *path, loff_t length, return 0; return security_ops->path_truncate(path, length, time_attrs); } + +int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt, + mode_t mode) +{ + if (unlikely(IS_PRIVATE(dentry->d_inode))) + return 0; + return security_ops->path_chmod(dentry, mnt, mode); +} + +int security_path_chown(struct path *path, uid_t uid, gid_t gid) +{ + if (unlikely(IS_PRIVATE(path->dentry->d_inode))) + return 0; + return security_ops->path_chown(path, uid, gid); +} #endif int security_inode_create(struct inode *dir, struct dentry *dentry, int mode) |