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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2016-04-14 00:30:15 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-04-23 15:33:03 -0400 |
| commit | 534bb0c7bdaf7377e84e82f0eb4a9992eaa87fbb (patch) | |
| tree | 664c088931fa5632419dc44decf4f7925c01282b | |
| parent | 45987e006c49728611e41d1fc04ff7cc803959f5 (diff) | |
| download | linux-534bb0c7bdaf7377e84e82f0eb4a9992eaa87fbb.tar.gz linux-534bb0c7bdaf7377e84e82f0eb4a9992eaa87fbb.tar.bz2 linux-534bb0c7bdaf7377e84e82f0eb4a9992eaa87fbb.zip | |
cifs: Fix removexattr for os2.* xattrs
If cifs_removexattr finds a "user." or "os2." xattr name prefix, it
skips 5 bytes, one byte too many for "os2.".
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/cifs/xattr.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c index 6e73ba96a97f..721c6db6fa81 100644 --- a/fs/cifs/xattr.c +++ b/fs/cifs/xattr.c @@ -61,15 +61,7 @@ int cifs_removexattr(struct dentry *direntry, const char *ea_name) } if (ea_name == NULL) { cifs_dbg(FYI, "Null xattr names not supported\n"); - } else if (strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) - && (strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN))) { - cifs_dbg(FYI, - "illegal xattr request %s (only user namespace supported)\n", - ea_name); - /* BB what if no namespace prefix? */ - /* Should we just pass them to server, except for - system and perhaps security prefixes? */ - } else { + } else if (!strncmp(ea_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) goto remove_ea_exit; @@ -78,6 +70,22 @@ int cifs_removexattr(struct dentry *direntry, const char *ea_name) rc = pTcon->ses->server->ops->set_EA(xid, pTcon, full_path, ea_name, NULL, (__u16)0, cifs_sb->local_nls, cifs_remap(cifs_sb)); + } else if (!strncmp(ea_name, XATTR_OS2_PREFIX, XATTR_OS2_PREFIX_LEN)) { + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) + goto remove_ea_exit; + + ea_name += XATTR_OS2_PREFIX_LEN; /* skip past os2. prefix */ + if (pTcon->ses->server->ops->set_EA) + rc = pTcon->ses->server->ops->set_EA(xid, pTcon, + full_path, ea_name, NULL, (__u16)0, + cifs_sb->local_nls, cifs_remap(cifs_sb)); + } else { + cifs_dbg(FYI, + "illegal xattr request %s (only user namespace supported)\n", + ea_name); + /* BB what if no namespace prefix? */ + /* Should we just pass them to server, except for + system and perhaps security prefixes? */ } remove_ea_exit: kfree(full_path); |