/* copy-acl.c - copy access control list from one file to another file
- Copyright (C) 2002-2003, 2005-2008 Free Software Foundation, Inc.
+ 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
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 and Andreas Gruenbacher. */
+ Written by Paul Eggert, Andreas Grünbacher, and Bruno Haible. */
#include <config.h>
#include "acl.h"
-#include "acl-internal.h"
+#include <errno.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
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 -1. */
+ 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 dest_desc, mode_t mode)
{
- int ret;
-
-#if USE_ACL && HAVE_ACL_GET_FILE && HAVE_ACL_SET_FILE && HAVE_ACL_FREE
- /* POSIX 1003.1e (draft 17 -- abandoned) specific version. */
- /* Linux, FreeBSD, MacOS X, IRIX, Tru64 */
-
- acl_t acl;
- if (HAVE_ACL_GET_FD && source_desc != -1)
- acl = acl_get_fd (source_desc);
- else
- acl = acl_get_file (src_name, ACL_TYPE_ACCESS);
- if (acl == NULL)
- {
- if (ACL_NOT_WELL_SUPPORTED (errno))
- return set_acl (dst_name, dest_desc, mode);
- else
- {
- error (0, errno, "%s", quote (src_name));
- return -1;
- }
- }
-
- if (HAVE_ACL_SET_FD && dest_desc != -1)
- ret = acl_set_fd (dest_desc, acl);
- else
- ret = acl_set_file (dst_name, ACL_TYPE_ACCESS, acl);
- if (ret != 0)
- {
- int saved_errno = errno;
-
- if (ACL_NOT_WELL_SUPPORTED (errno))
- {
- int n = acl_entries (acl);
-
- acl_free (acl);
- /* On most hosts with MODE_INSIDE_ACL an ACL is trivial if n == 3,
- and it cannot be less than 3. On IRIX 6.5 it is also trivial if
- n == -1.
- For simplicity and safety, assume the ACL is trivial if n <= 3.
- Also see file-has-acl.c for some of the other possibilities;
- it's not clear whether that complexity is needed here. */
- if (n <= 3 * MODE_INSIDE_ACL)
- {
- if (chmod_or_fchmod (dst_name, dest_desc, mode) != 0)
- saved_errno = errno;
- else
- return 0;
- }
- else
- chmod_or_fchmod (dst_name, dest_desc, mode);
- }
- else
- {
- acl_free (acl);
- chmod_or_fchmod (dst_name, dest_desc, mode);
- }
- error (0, saved_errno, _("preserving permissions for %s"),
- quote (dst_name));
- return -1;
- }
- else
- acl_free (acl);
-
- if (!MODE_INSIDE_ACL || (mode & (S_ISUID | S_ISGID | S_ISVTX)))
- {
- /* We did not call chmod so far, and either the mode and the ACL are
- separate or special bits are to be set which don't fit into ACLs. */
-
- if (chmod_or_fchmod (dst_name, dest_desc, mode) != 0)
- {
- error (0, errno, _("preserving permissions for %s"),
- quote (dst_name));
- return -1;
- }
- }
-
- if (S_ISDIR (mode))
- {
- acl = acl_get_file (src_name, ACL_TYPE_DEFAULT);
- if (acl == NULL)
- {
- error (0, errno, "%s", quote (src_name));
- return -1;
- }
-
- if (acl_set_file (dst_name, ACL_TYPE_DEFAULT, acl))
- {
- error (0, errno, _("preserving permissions for %s"),
- quote (dst_name));
- acl_free (acl);
- return -1;
- }
- else
- acl_free (acl);
- }
- return 0;
-
-#else
-
-# if USE_ACL && defined ACL_NO_TRIVIAL
- /* Solaris 10 NFSv4 ACLs. */
- acl_t *aclp = NULL;
- ret = (source_desc < 0
- ? acl_get (src_name, ACL_NO_TRIVIAL, &aclp)
- : facl_get (source_desc, ACL_NO_TRIVIAL, &aclp));
- if (ret != 0 && errno != ENOSYS)
+ int ret = qcopy_acl (src_name, source_desc, dst_name, dest_desc, mode);
+ switch (ret)
{
+ case -2:
error (0, errno, "%s", quote (src_name));
- return ret;
- }
-# endif
+ break;
- ret = qset_acl (dst_name, dest_desc, mode);
- if (ret != 0)
- error (0, errno, _("preserving permissions for %s"), quote (dst_name));
+ case -1:
+ error (0, errno, _("preserving permissions for %s"), quote (dst_name));
+ break;
-# if USE_ACL && defined ACL_NO_TRIVIAL
- if (ret == 0 && aclp)
- {
- ret = (dest_desc < 0
- ? acl_set (dst_name, aclp)
- : facl_set (dest_desc, aclp));
- if (ret != 0)
- error (0, errno, _("preserving permissions for %s"), quote (dst_name));
- acl_free (aclp);
+ default:
+ break;
}
-# endif
-
return ret;
-#endif
}
projects / gnulib.git / blobdiff