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8e88b9783d
Preparing to reduce use of lp_posix_pathnames(). Signed-off-by: Jeremy Allison <jra@samba.org> Reviewed-by: Ralph Boehme <slow@samba.org>
117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/*
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* Module to work around a bug in Linux XFS:
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* http://oss.sgi.com/bugzilla/show_bug.cgi?id=280
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*
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* Copyright (c) Volker Lendecke 2010
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "system/filesys.h"
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#include "smbd/smbd.h"
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static int linux_xfs_sgid_mkdir(vfs_handle_struct *handle,
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const struct smb_filename *smb_fname,
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mode_t mode)
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{
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struct smb_filename fname = { 0, };
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int mkdir_res;
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int res;
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DEBUG(10, ("Calling linux_xfs_sgid_mkdir(%s)\n", smb_fname->base_name));
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mkdir_res = SMB_VFS_NEXT_MKDIR(handle, smb_fname, mode);
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if (mkdir_res == -1) {
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DEBUG(10, ("SMB_VFS_NEXT_MKDIR returned error: %s\n",
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strerror(errno)));
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return mkdir_res;
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}
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if (!parent_dirname(talloc_tos(),
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smb_fname->base_name,
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&fname.base_name,
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NULL)) {
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DEBUG(1, ("parent_dirname failed\n"));
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/* return success, we did the mkdir */
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return mkdir_res;
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}
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res = SMB_VFS_NEXT_STAT(handle, &fname);
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if (res == -1) {
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DEBUG(10, ("NEXT_STAT(%s) failed: %s\n", fname.base_name,
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strerror(errno)));
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/* return success, we did the mkdir */
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return mkdir_res;
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}
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TALLOC_FREE(fname.base_name);
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if ((fname.st.st_ex_mode & S_ISGID) == 0) {
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/* No SGID to inherit */
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DEBUG(10, ("No SGID to inherit\n"));
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return mkdir_res;
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}
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fname.base_name = discard_const_p(char, smb_fname->base_name);
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res = SMB_VFS_NEXT_STAT(handle, &fname);
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if (res == -1) {
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DEBUG(2, ("Could not stat just created dir %s: %s\n",
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smb_fname->base_name,
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strerror(errno)));
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/* return success, we did the mkdir */
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return mkdir_res;
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}
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fname.st.st_ex_mode |= S_ISGID;
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fname.st.st_ex_mode &= ~S_IFDIR;
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/*
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* Yes, we have to do this as root. If you do it as
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* non-privileged user, XFS on Linux will just ignore us and
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* return success. What can you do...
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*/
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become_root();
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res = SMB_VFS_NEXT_CHMOD(handle,
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smb_fname,
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fname.st.st_ex_mode);
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unbecome_root();
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if (res == -1) {
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DEBUG(2, ("CHMOD(%s, %o) failed: %s\n", smb_fname->base_name,
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(int)fname.st.st_ex_mode, strerror(errno)));
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/* return success, we did the mkdir */
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return mkdir_res;
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}
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return mkdir_res;
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}
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static int linux_xfs_sgid_chmod_acl(vfs_handle_struct *handle,
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const struct smb_filename *smb_fname,
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mode_t mode)
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{
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errno = ENOSYS;
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return -1;
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}
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static struct vfs_fn_pointers linux_xfs_sgid_fns = {
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.mkdir_fn = linux_xfs_sgid_mkdir,
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.chmod_acl_fn = linux_xfs_sgid_chmod_acl,
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};
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NTSTATUS vfs_linux_xfs_sgid_init(void);
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NTSTATUS vfs_linux_xfs_sgid_init(void)
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{
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return smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
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"linux_xfs_sgid", &linux_xfs_sgid_fns);
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}
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