view lib/copy-acl.c @ 17370:915d2ad64b47

qacl: new module, broken out from the acl module This is for GNU Emacs, which wants the acl functions but does not want 'error' invoked when they fail. * lib/acl-internal.h: Do not include error.h, quote.h. (ENOSYS, ENOTSUP): Remove; no longer needed. (ACL_NOT_WELL_SUPPORTED): Remove; replaced by acl_errno_valid. * lib/acl.h: Include <stdbool.h>. (acl_errno_valid): New function. * lib/copy-acl.c, lib/set-acl.c: Include errno,h, not acl-internal.h. * lib/copy-acl.c (qcopy_acl): Move to lib/qcopy-acl.c. * lib/set-acl.c: Rename from lib/set-mode-acl.c. (chmod_or_fchmod, qset_acl): Move to lib/qset-acl.c. (ACL_INTERNAL_INLINE): Remove; no longer needed. * lib/file-has-acl.c (file_has_acl): * lib/qcopy-acl.c (qcopy_acl): * lib/qset-acl.c (qset_acl): Use acl_errno_valid instead of ACL_NOT_WELL_SUPPORTED. * modules/acl (Files): Move lib/acl.h, lib/acl-internal.h, lib/acl_entries.c, lib/set-mode-acl.c (renamed to lib/set-acl.c), lib/file-has-acl.c, m4/acl.m4 to qacl module. Add lib/set-acl.c. (Depends-on): Move extern-inline, fstat, sys_stat to qacl module. Add qacl. (configure.ac): Move gl_FUNC_ACL to qacl module. (lib_SOURCES): Remove file-has-acl.c (moved to qacl module). Rename set-mode-acl.c to set-acl.c. * lib/acl-errno-valid.c: New file. * lib/qcopy-acl.c: New file, moved from the old lib/copy-acl.c; the copy_acl function remains in copy-acl.c. * lib/qcopy-acl.c, lib/qset-acl.c: Do not include gettext.h. (_): Remove; not needed. * lib/qset-acl.c: New file, moved from the old lib/set-mode-acl.c; the set_acl function remains in set-acl.c (renamed from set-mode-acl.c). * modules/qacl: New file, moved from the old modules/acl. (Files, lib_SOURCES): Add acl-errno-valid.c, qcopy-acl.c, qset-acl.c. Remove set-mode-acl.c, copy-acl.c. (Depends-on): Remove error, gettext-h, quote. Add stdbool.
author Paul Eggert <eggert@cs.ucla.edu>
date Sat, 27 Apr 2013 17:39:07 -0700
parents e542fd46ad6f
children 239b8a8792bf
line wrap: on
line source

/* copy-acl.c - copy access control list from one file to another file

   Copyright (C) 2002-2003, 2005-2013 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.

   Written by Paul Eggert, Andreas Grünbacher, and Bruno Haible.  */

#include <config.h>

#include "acl.h"

#include "error.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)


/* Copy access control lists from one file to another. If SOURCE_DESC is
   a valid file descriptor, use file descriptor operations, else use
   filename based operations on SRC_NAME. Likewise for DEST_DESC and
   DST_NAME.
   If access control lists are not available, fchmod the target file to
   MODE.  Also sets the non-permission bits of the destination file
   (S_ISUID, S_ISGID, S_ISVTX) to those from MODE if any are set.
   Return 0 if successful, otherwise output a diagnostic and return a
   negative error code.  */

int
copy_acl (const char *src_name, int source_desc, const char *dst_name,
          int dest_desc, mode_t mode)
{
  int ret = qcopy_acl (src_name, source_desc, dst_name, dest_desc, mode);
  switch (ret)
    {
    case -2:
      error (0, errno, "%s", quote (src_name));
      break;

    case -1:
      error (0, errno, _("preserving permissions for %s"), quote (dst_name));
      break;

    default:
      break;
    }
  return ret;
}