diff options
| author | Konstantin Khlebnikov <k.khlebnikov@samsung.com> | 2014-08-07 18:52:49 +0200 |
|---|---|---|
| committer | Casey Schaufler <casey@schaufler-ca.com> | 2014-08-08 23:51:19 +0200 |
| commit | da1b63566c469bf3e2b24182114422e16b1aa34c (patch) | |
| tree | 035aeda479dd9c497de381a21837c6167cf241c6 | |
| parent | Smack: handle zero-length security labels without panic (diff) | |
| download | linux-da1b63566c469bf3e2b24182114422e16b1aa34c.tar.xz linux-da1b63566c469bf3e2b24182114422e16b1aa34c.zip | |
Smack: remove unneeded NULL-termination from securtity label
Values of extended attributes are stored as binary blobs. NULL-termination
of them isn't required. It just wastes disk space and confuses command-line
tools like getfattr because they have to print that zero byte at the end.
This patch removes terminating zero byte from initial security label in
smack_inode_init_security and cuts it out in function smack_inode_getsecurity
which is used by syscall getxattr. This change seems completely safe, because
function smk_parse_smack ignores everything after first zero byte.
Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
| -rw-r--r-- | security/smack/smack_lsm.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index afa5ad0e7f72..16ae8534b14c 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -672,7 +672,7 @@ static int smack_inode_init_security(struct inode *inode, struct inode *dir, } if (len) - *len = strlen(isp) + 1; + *len = strlen(isp); return 0; } @@ -1076,7 +1076,7 @@ static int smack_inode_getsecurity(const struct inode *inode, if (strcmp(name, XATTR_SMACK_SUFFIX) == 0) { isp = smk_of_inode(inode); - ilen = strlen(isp) + 1; + ilen = strlen(isp); *buffer = isp; return ilen; } @@ -1101,7 +1101,7 @@ static int smack_inode_getsecurity(const struct inode *inode, else return -EOPNOTSUPP; - ilen = strlen(isp) + 1; + ilen = strlen(isp); if (rc == 0) { *buffer = isp; rc = ilen; |