diff options
| author | Roberto Sassu <roberto.sassu@huawei.com> | 2023-11-16 12:01:22 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-03 16:19:24 +0300 |
| commit | dee9c25865550782e831cb8d6e80dd29817078ac (patch) | |
| tree | 8c591a12b8ae843171f20957da51e72587642021 | |
| parent | d4b1c3b5ec1c14b5e89f4fd849cda8b5ab85f0fe (diff) | |
| download | linux-dee9c25865550782e831cb8d6e80dd29817078ac.tar.xz | |
smack: Handle SMACK64TRANSMUTE in smack_inode_setsecurity()
[ Upstream commit ac02f007d64eb2769d0bde742aac4d7a5fc6e8a5 ]
If the SMACK64TRANSMUTE xattr is provided, and the inode is a directory,
update the in-memory inode flags by setting SMK_INODE_TRANSMUTE.
Cc: stable@vger.kernel.org
Fixes: 5c6d1125f8db ("Smack: Transmute labels on specified directories") # v2.6.38.x
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | security/smack/smack_lsm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 07f7351148ec..feba69549d08 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -2783,6 +2783,15 @@ static int smack_inode_setsecurity(struct inode *inode, const char *name, if (value == NULL || size > SMK_LONGLABEL || size == 0) return -EINVAL; + if (strcmp(name, XATTR_SMACK_TRANSMUTE) == 0) { + if (!S_ISDIR(inode->i_mode) || size != TRANS_TRUE_SIZE || + strncmp(value, TRANS_TRUE, TRANS_TRUE_SIZE) != 0) + return -EINVAL; + + nsp->smk_flags |= SMK_INODE_TRANSMUTE; + return 0; + } + skp = smk_import_entry(value, size); if (IS_ERR(skp)) return PTR_ERR(skp); |