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cifs: Fix xattr name checks 

Use strcmp(str, name) instead of strncmp(str, name, strlen(name)) for
checking if str and name are the same (as opposed to name being a prefix
of str) in the gexattr and setxattr inode operations.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Andreas Gruenbacher 2016-04-14 00:30:13 +02:00 committed by Al Viro
parent ce23e64013
commit d9a1548921
1 changed files with 8 additions and 16 deletions
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24
fs/cifs/xattr.c
View File

@ -129,7 +129,7 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
== 0) {
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto set_ea_exit;
if (strncmp(ea_name, CIFS_XATTR_DOS_ATTRIB, 14) == 0)
if (strcmp(ea_name, CIFS_XATTR_DOS_ATTRIB) == 0)
cifs_dbg(FYI, "attempt to set cifs inode metadata\n");
ea_name += XATTR_USER_PREFIX_LEN; /* skip past user. prefix */
@ -147,8 +147,7 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
rc = pTcon->ses->server->ops->set_EA(xid, pTcon,
full_path, ea_name, ea_value, (__u16)value_size,
cifs_sb->local_nls, cifs_remap(cifs_sb));
} else if (strncmp(ea_name, CIFS_XATTR_CIFS_ACL,
strlen(CIFS_XATTR_CIFS_ACL)) == 0) {
} else if (strcmp(ea_name, CIFS_XATTR_CIFS_ACL) == 0) {
#ifdef CONFIG_CIFS_ACL
struct cifs_ntsd *pacl;
pacl = kmalloc(value_size, GFP_KERNEL);
@ -170,10 +169,7 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
cifs_dbg(FYI, "Set CIFS ACL not supported yet\n");
#endif /* CONFIG_CIFS_ACL */
} else {
int temp;
temp = strncmp(ea_name, XATTR_NAME_POSIX_ACL_ACCESS,
strlen(XATTR_NAME_POSIX_ACL_ACCESS));
if (temp == 0) {
if (strcmp(ea_name, XATTR_NAME_POSIX_ACL_ACCESS) == 0) {
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
@ -184,8 +180,7 @@ int cifs_setxattr(struct dentry *direntry, const char *ea_name,
#else
cifs_dbg(FYI, "set POSIX ACL not supported\n");
#endif
} else if (strncmp(ea_name, XATTR_NAME_POSIX_ACL_DEFAULT,
strlen(XATTR_NAME_POSIX_ACL_DEFAULT)) == 0) {
} else if (strcmp(ea_name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0) {
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
rc = CIFSSMBSetPosixACL(xid, pTcon, full_path,
@ -246,7 +241,7 @@ ssize_t cifs_getxattr(struct dentry *direntry, struct inode *inode,
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
goto get_ea_exit;
if (strncmp(ea_name, CIFS_XATTR_DOS_ATTRIB, 14) == 0) {
if (strcmp(ea_name, CIFS_XATTR_DOS_ATTRIB) == 0) {
cifs_dbg(FYI, "attempt to query cifs inode metadata\n");
/* revalidate/getattr then populate from inode */
} /* BB add else when above is implemented */
@ -264,8 +259,7 @@ ssize_t cifs_getxattr(struct dentry *direntry, struct inode *inode,
rc = pTcon->ses->server->ops->query_all_EAs(xid, pTcon,
full_path, ea_name, ea_value, buf_size,
cifs_sb->local_nls, cifs_remap(cifs_sb));
} else if (strncmp(ea_name, XATTR_NAME_POSIX_ACL_ACCESS,
strlen(XATTR_NAME_POSIX_ACL_ACCESS)) == 0) {
} else if (strcmp(ea_name, XATTR_NAME_POSIX_ACL_ACCESS) == 0) {
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
@ -275,8 +269,7 @@ ssize_t cifs_getxattr(struct dentry *direntry, struct inode *inode,
#else
cifs_dbg(FYI, "Query POSIX ACL not supported yet\n");
#endif /* CONFIG_CIFS_POSIX */
} else if (strncmp(ea_name, XATTR_NAME_POSIX_ACL_DEFAULT,
strlen(XATTR_NAME_POSIX_ACL_DEFAULT)) == 0) {
} else if (strcmp(ea_name, XATTR_NAME_POSIX_ACL_DEFAULT) == 0) {
#ifdef CONFIG_CIFS_POSIX
if (sb->s_flags & MS_POSIXACL)
rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
@ -286,8 +279,7 @@ ssize_t cifs_getxattr(struct dentry *direntry, struct inode *inode,
#else
cifs_dbg(FYI, "Query POSIX default ACL not supported yet\n");
#endif /* CONFIG_CIFS_POSIX */
} else if (strncmp(ea_name, CIFS_XATTR_CIFS_ACL,
strlen(CIFS_XATTR_CIFS_ACL)) == 0) {
} else if (strcmp(ea_name, CIFS_XATTR_CIFS_ACL) == 0) {
#ifdef CONFIG_CIFS_ACL
u32 acllen;
struct cifs_ntsd *pacl;