CIFS: Move set_file_info to ops struct

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index b73d2750296d..ed311968437a 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -758,6 +758,84 @@ cifs_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
         return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
 }
 
+static int
+smb_set_file_info(struct inode *inode, const char *full_path,
+                  FILE_BASIC_INFO *buf, const unsigned int xid)
+{
+        int oplock = 0;
+        int rc;
+        __u16 netfid;
+        __u32 netpid;
+        struct cifsFileInfo *open_file;
+        struct cifsInodeInfo *cinode = CIFS_I(inode);
+        struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+        struct tcon_link *tlink = NULL;
+        struct cifs_tcon *tcon;
+        FILE_BASIC_INFO info_buf;
+
+        /* if the file is already open for write, just use that fileid */
+        open_file = find_writable_file(cinode, true);
+        if (open_file) {
+                netfid = open_file->fid.netfid;
+                netpid = open_file->pid;
+                tcon = tlink_tcon(open_file->tlink);
+                goto set_via_filehandle;
+        }
+
+        tlink = cifs_sb_tlink(cifs_sb);
+        if (IS_ERR(tlink)) {
+                rc = PTR_ERR(tlink);
+                tlink = NULL;
+                goto out;
+        }
+        tcon = tlink_tcon(tlink);
+
+        /*
+         * NT4 apparently returns success on this call, but it doesn't really
+         * work.
+         */
+        if (!(tcon->ses->flags & CIFS_SES_NT4)) {
+                rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf,
+                                        cifs_sb->local_nls,
+                                        cifs_sb->mnt_cifs_flags &
+                                                CIFS_MOUNT_MAP_SPECIAL_CHR);
+                if (rc == 0) {
+                        cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
+                        goto out;
+                } else if (rc != -EOPNOTSUPP && rc != -EINVAL)
+                        goto out;
+        }
+
+        cFYI(1, "calling SetFileInfo since SetPathInfo for times not supported "
+                "by this server");
+        rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
+                         SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
+                         &netfid, &oplock, NULL, cifs_sb->local_nls,
+                         cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+        if (rc != 0) {
+                if (rc == -EIO)
+                        rc = -EINVAL;
+                goto out;
+        }
+
+        netpid = current->tgid;
+
+set_via_filehandle:
+        rc = CIFSSMBSetFileInfo(xid, tcon, &info_buf, netfid, netpid);
+        if (!rc)
+                cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
+
+        if (open_file == NULL)
+                CIFSSMBClose(xid, tcon, netfid);
+        else
+                cifsFileInfo_put(open_file);
+out:
+        if (tlink != NULL)
+                cifs_put_tlink(tlink);
+        return rc;
+}
+
 struct smb_version_operations smb1_operations = {
         .send_cancel = send_nt_cancel,
         .compare_fids = cifs_compare_fids,
@@ -795,6 +873,7 @@ struct smb_version_operations smb1_operations = {
         .get_srv_inum = cifs_get_srv_inum,
         .set_path_size = CIFSSMBSetEOF,
         .set_file_size = CIFSSMBSetFileSize,
+        .set_file_info = smb_set_file_info,
         .build_path_to_root = cifs_build_path_to_root,
         .echo = CIFSSMBEcho,
         .mkdir = CIFSSMBMkDir,