diff options
| -rw-r--r-- | fs/cifs/xattr.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c index 5e23f64c0804..c4237b8ad9c6 100644 --- a/fs/cifs/xattr.c +++ b/fs/cifs/xattr.c @@ -33,6 +33,7 @@ #define MAX_EA_VALUE_SIZE 65535 #define CIFS_XATTR_CIFS_ACL "system.cifs_acl" +#define CIFS_XATTR_ATTRIB "cifs.dosattrib" /* full name: user.cifs.dosattrib */ /* BB need to add server (Samba e.g) support for security and trusted prefix */ @@ -144,6 +145,31 @@ out: return rc; } +static int cifs_attrib_get(struct dentry *dentry, + struct inode *inode, void *value, + size_t size) +{ + ssize_t rc; + __u32 *pattribute; + + rc = cifs_revalidate_dentry_attr(dentry); + + if (rc) + return rc; + + if ((value == NULL) || (size == 0)) + return sizeof(__u32); + else if (size < sizeof(__u32)) + return -ERANGE; + + /* return dos attributes as pseudo xattr */ + pattribute = (__u32 *)value; + *pattribute = CIFS_I(inode)->cifsAttrs; + + return sizeof(__u32); +} + + static int cifs_xattr_get(const struct xattr_handler *handler, struct dentry *dentry, struct inode *inode, const char *name, void *value, size_t size) @@ -168,10 +194,16 @@ static int cifs_xattr_get(const struct xattr_handler *handler, rc = -ENOMEM; goto out; } - /* return dos attributes as pseudo xattr */ + /* return alt name if available as pseudo attr */ switch (handler->flags) { case XATTR_USER: + cifs_dbg(FYI, "%s:querying user xattr %s\n", __func__, name); + if (strcmp(name, CIFS_XATTR_ATTRIB) == 0) { + rc = cifs_attrib_get(dentry, inode, value, size); + break; + } + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) goto out; |