2 * Module to work around a bug in Linux XFS:
3 * http://oss.sgi.com/bugzilla/show_bug.cgi?id=280
5 * Copyright (c) Volker Lendecke 2010
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
22 #include "system/filesys.h"
23 #include "smbd/smbd.h"
25 static int linux_xfs_sgid_mkdir(vfs_handle_struct *handle,
26 const struct smb_filename *smb_fname,
29 struct smb_filename fname = { 0, };
33 DEBUG(10, ("Calling linux_xfs_sgid_mkdir(%s)\n", smb_fname->base_name));
35 mkdir_res = SMB_VFS_NEXT_MKDIR(handle, smb_fname, mode);
36 if (mkdir_res == -1) {
37 DEBUG(10, ("SMB_VFS_NEXT_MKDIR returned error: %s\n",
42 if (!parent_dirname(talloc_tos(),
46 DEBUG(1, ("parent_dirname failed\n"));
47 /* return success, we did the mkdir */
51 res = SMB_VFS_NEXT_STAT(handle, &fname);
53 DEBUG(10, ("NEXT_STAT(%s) failed: %s\n", fname.base_name,
55 /* return success, we did the mkdir */
58 TALLOC_FREE(fname.base_name);
59 if ((fname.st.st_ex_mode & S_ISGID) == 0) {
60 /* No SGID to inherit */
61 DEBUG(10, ("No SGID to inherit\n"));
65 fname.base_name = discard_const_p(char, smb_fname->base_name);
67 res = SMB_VFS_NEXT_STAT(handle, &fname);
69 DEBUG(2, ("Could not stat just created dir %s: %s\n",
72 /* return success, we did the mkdir */
75 fname.st.st_ex_mode |= S_ISGID;
76 fname.st.st_ex_mode &= ~S_IFDIR;
79 * Yes, we have to do this as root. If you do it as
80 * non-privileged user, XFS on Linux will just ignore us and
81 * return success. What can you do...
84 res = SMB_VFS_NEXT_CHMOD(handle,
90 DEBUG(2, ("CHMOD(%s, %o) failed: %s\n", smb_fname->base_name,
91 (int)fname.st.st_ex_mode, strerror(errno)));
92 /* return success, we did the mkdir */
98 static int linux_xfs_sgid_chmod_acl(vfs_handle_struct *handle,
99 const struct smb_filename *smb_fname,
106 static struct vfs_fn_pointers linux_xfs_sgid_fns = {
107 .mkdir_fn = linux_xfs_sgid_mkdir,
108 .chmod_acl_fn = linux_xfs_sgid_chmod_acl,
112 NTSTATUS vfs_linux_xfs_sgid_init(TALLOC_CTX *ctx)
114 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
115 "linux_xfs_sgid", &linux_xfs_sgid_fns);