diff options
Diffstat (limited to 'fs/cifs/smb2ops.c')
| -rw-r--r-- | fs/cifs/smb2ops.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 0e33ca32abf9..1266137406fa 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -157,6 +157,30 @@ smb2_negotiate(const unsigned int xid, struct cifs_ses *ses) return rc; } +static int +smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const char *full_path) +{ + int rc; + __u64 persistent_fid, volatile_fid; + __le16 *utf16_path; + + utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); + if (!utf16_path) + return -ENOMEM; + + rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid, + FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0); + if (rc) { + kfree(utf16_path); + return rc; + } + + rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid); + kfree(utf16_path); + return rc; +} + struct smb_version_operations smb21_operations = { .setup_request = smb2_setup_request, .check_receive = smb2_check_receive, @@ -174,6 +198,7 @@ struct smb_version_operations smb21_operations = { .logoff = SMB2_logoff, .tree_connect = SMB2_tcon, .tree_disconnect = SMB2_tdis, + .is_path_accessible = smb2_is_path_accessible, }; struct smb_version_values smb21_values = { |