/* set-mode-acl.c - set access control list equivalent to a mode
- Copyright (C) 2002-2003, 2005-2008 Free Software Foundation, Inc.
+ Copyright (C) 2002-2003, 2005-2010 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 and Andreas Gruenbacher, and Bruno Haible. */
#include <config.h>
#include "acl-internal.h"
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+
/* If DESC is a valid file descriptor use fchmod to change the
file's mode to MODE on systems that have fchown. On systems
that don't have fchown and if DESC is invalid, use chown on
{
acl = acl_from_mode (mode);
if (!acl)
- return -1;
+ return -1;
}
else /* FreeBSD, IRIX, Tru64 */
{
/* If we were to create the ACL using the functions acl_init(),
- acl_create_entry(), acl_set_tag_type(), acl_set_qualifier(),
- acl_get_permset(), acl_clear_perm[s](), acl_add_perm(), we
- would need to create a qualifier. I don't know how to do this.
- So create it using acl_from_text(). */
+ acl_create_entry(), acl_set_tag_type(), acl_set_qualifier(),
+ acl_get_permset(), acl_clear_perm[s](), acl_add_perm(), we
+ would need to create a qualifier. I don't know how to do this.
+ So create it using acl_from_text(). */
# if HAVE_ACL_FREE_TEXT /* Tru64 */
char acl_text[] = "u::---,g::---,o::---,";
acl = acl_from_text (acl_text);
if (!acl)
- return -1;
+ return -1;
}
if (HAVE_ACL_SET_FD && desc != -1)
ret = acl_set_fd (desc, acl);
acl_free (acl);
if (ACL_NOT_WELL_SUPPORTED (errno))
- return chmod_or_fchmod (name, desc, mode);
+ return chmod_or_fchmod (name, desc, mode);
else
- {
- errno = saved_errno;
- return -1;
- }
+ {
+ errno = saved_errno;
+ return -1;
+ }
}
else
acl_free (acl);
/* On MacOS X, acl_get_file (name, ACL_TYPE_ACCESS)
and acl_get_file (name, ACL_TYPE_DEFAULT)
always return NULL / EINVAL. You have to use
- acl_get_file (name, ACL_TYPE_EXTENDED)
+ acl_get_file (name, ACL_TYPE_EXTENDED)
or acl_get_fd (open (name, ...))
to retrieve an ACL.
On the other hand,
- acl_set_file (name, ACL_TYPE_ACCESS, acl)
+ acl_set_file (name, ACL_TYPE_ACCESS, acl)
and acl_set_file (name, ACL_TYPE_DEFAULT, acl)
have the same effect as
- acl_set_file (name, ACL_TYPE_EXTENDED, acl):
+ acl_set_file (name, ACL_TYPE_EXTENDED, acl):
Each of these calls sets the file's ACL. */
acl_t acl;
acl = acl_init (0);
if (acl)
- {
- if (HAVE_ACL_SET_FD && desc != -1)
- ret = acl_set_fd (desc, acl);
- else
- ret = acl_set_file (name, ACL_TYPE_EXTENDED, acl);
- if (ret != 0)
- {
- int saved_errno = errno;
-
- acl_free (acl);
-
- if (ACL_NOT_WELL_SUPPORTED (saved_errno))
- return chmod_or_fchmod (name, desc, mode);
- else
- {
- errno = saved_errno;
- return -1;
- }
- }
- acl_free (acl);
- }
+ {
+ if (HAVE_ACL_SET_FD && desc != -1)
+ ret = acl_set_fd (desc, acl);
+ else
+ ret = acl_set_file (name, ACL_TYPE_EXTENDED, acl);
+ if (ret != 0)
+ {
+ int saved_errno = errno;
+
+ acl_free (acl);
+
+ if (ACL_NOT_WELL_SUPPORTED (saved_errno))
+ return chmod_or_fchmod (name, desc, mode);
+ else
+ {
+ errno = saved_errno;
+ return -1;
+ }
+ }
+ acl_free (acl);
+ }
}
/* Since !MODE_INSIDE_ACL, we have to call chmod explicitly. */
acl_free (aclp);
if (ret < 0)
{
- if (saved_errno == ENOSYS)
- return chmod_or_fchmod (name, desc, mode);
+ if (saved_errno == ENOSYS || saved_errno == EOPNOTSUPP)
+ return chmod_or_fchmod (name, desc, mode);
errno = saved_errno;
return -1;
}
if (mode & (S_ISUID | S_ISGID | S_ISVTX))
{
/* We did not call chmod so far, so the special bits have not yet
- been set. */
+ been set. */
return chmod_or_fchmod (name, desc, mode);
}
return 0;
# ifdef ACE_GETACL
/* Solaris also has a different variant of ACLs, used in ZFS and NFSv4
file systems (whereas the other ones are used in UFS file systems). */
- {
- ace_t entries[3];
- int ret;
- entries[0].a_type = ALLOW;
- entries[0].a_flags = ACE_OWNER;
- entries[0].a_who = 0; /* irrelevant */
- entries[0].a_access_mask = (mode >> 6) & 7;
- entries[1].a_type = ALLOW;
- entries[1].a_flags = ACE_GROUP;
- entries[1].a_who = 0; /* irrelevant */
- entries[1].a_access_mask = (mode >> 3) & 7;
- entries[2].a_type = ALLOW;
- entries[2].a_flags = ACE_OTHER;
- entries[2].a_who = 0;
- entries[2].a_access_mask = mode & 7;
+ /* The flags in the ace_t structure changed in a binary incompatible way
+ when ACL_NO_TRIVIAL etc. were introduced in <sys/acl.h> version 1.15.
+ How to distinguish the two conventions at runtime?
+ We fetch the existing ACL. In the old convention, usually three ACEs have
+ a_flags = ACE_OWNER / ACE_GROUP / ACE_OTHER, in the range 0x0100..0x0400.
+ In the new convention, these values are not used. */
+ int convention;
- if (desc != -1)
- ret = facl (desc, ACE_SETACL, sizeof (entries) / sizeof (aclent_t), entries);
- else
- ret = acl (name, ACE_SETACL, sizeof (entries) / sizeof (aclent_t), entries);
- if (ret < 0 && errno != EINVAL && errno != ENOTSUP)
+ {
+ int count;
+ ace_t *entries;
+
+ for (;;)
{
- if (errno == ENOSYS)
- return chmod_or_fchmod (name, desc, mode);
- return -1;
+ if (desc != -1)
+ count = facl (desc, ACE_GETACLCNT, 0, NULL);
+ else
+ count = acl (name, ACE_GETACLCNT, 0, NULL);
+ if (count <= 0)
+ {
+ convention = -1;
+ break;
+ }
+ entries = (ace_t *) malloc (count * sizeof (ace_t));
+ if (entries == NULL)
+ {
+ errno = ENOMEM;
+ return -1;
+ }
+ if ((desc != -1
+ ? facl (desc, ACE_GETACL, count, entries)
+ : acl (name, ACE_GETACL, count, entries))
+ == count)
+ {
+ int i;
+
+ convention = 0;
+ for (i = 0; i < count; i++)
+ if (entries[i].a_flags & (ACE_OWNER | ACE_GROUP | ACE_OTHER))
+ {
+ convention = 1;
+ break;
+ }
+ free (entries);
+ break;
+ }
+ /* Huh? The number of ACL entries changed since the last call.
+ Repeat. */
+ free (entries);
}
}
+
+ if (convention >= 0)
+ {
+ ace_t entries[3];
+ int ret;
+
+ if (convention)
+ {
+ /* Running on Solaris 10. */
+ entries[0].a_type = ALLOW;
+ entries[0].a_flags = ACE_OWNER;
+ entries[0].a_who = 0; /* irrelevant */
+ entries[0].a_access_mask = (mode >> 6) & 7;
+ entries[1].a_type = ALLOW;
+ entries[1].a_flags = ACE_GROUP;
+ entries[1].a_who = 0; /* irrelevant */
+ entries[1].a_access_mask = (mode >> 3) & 7;
+ entries[2].a_type = ALLOW;
+ entries[2].a_flags = ACE_OTHER;
+ entries[2].a_who = 0;
+ entries[2].a_access_mask = mode & 7;
+ }
+ else
+ {
+ /* Running on Solaris 10 (newer version) or Solaris 11. */
+ entries[0].a_type = ACE_ACCESS_ALLOWED_ACE_TYPE;
+ entries[0].a_flags = NEW_ACE_OWNER;
+ entries[0].a_who = 0; /* irrelevant */
+ entries[0].a_access_mask =
+ (mode & 0400 ? NEW_ACE_READ_DATA : 0)
+ | (mode & 0200 ? NEW_ACE_WRITE_DATA : 0)
+ | (mode & 0100 ? NEW_ACE_EXECUTE : 0);
+ entries[1].a_type = ACE_ACCESS_ALLOWED_ACE_TYPE;
+ entries[1].a_flags = NEW_ACE_GROUP | NEW_ACE_IDENTIFIER_GROUP;
+ entries[1].a_who = 0; /* irrelevant */
+ entries[1].a_access_mask =
+ (mode & 0040 ? NEW_ACE_READ_DATA : 0)
+ | (mode & 0020 ? NEW_ACE_WRITE_DATA : 0)
+ | (mode & 0010 ? NEW_ACE_EXECUTE : 0);
+ entries[2].a_type = ACE_ACCESS_ALLOWED_ACE_TYPE;
+ entries[2].a_flags = ACE_EVERYONE;
+ entries[2].a_who = 0;
+ entries[2].a_access_mask =
+ (mode & 0004 ? NEW_ACE_READ_DATA : 0)
+ | (mode & 0002 ? NEW_ACE_WRITE_DATA : 0)
+ | (mode & 0001 ? NEW_ACE_EXECUTE : 0);
+ }
+ if (desc != -1)
+ ret = facl (desc, ACE_SETACL,
+ sizeof (entries) / sizeof (ace_t), entries);
+ else
+ ret = acl (name, ACE_SETACL,
+ sizeof (entries) / sizeof (ace_t), entries);
+ if (ret < 0 && errno != EINVAL && errno != ENOTSUP)
+ {
+ if (errno == ENOSYS)
+ return chmod_or_fchmod (name, desc, mode);
+ return -1;
+ }
+ }
# endif
{
ret = acl (name, SETACL, sizeof (entries) / sizeof (aclent_t), entries);
if (ret < 0)
{
- if (errno == ENOSYS)
- return chmod_or_fchmod (name, desc, mode);
- return -1;
+ if (errno == ENOSYS || errno == EOPNOTSUPP)
+ return chmod_or_fchmod (name, desc, mode);
+ return -1;
}
}
-
+
if (!MODE_INSIDE_ACL || (mode & (S_ISUID | S_ISGID | S_ISVTX)))
{
/* We did not call chmod so far, so the special bits have not yet
if (ret < 0)
{
if (errno == ENOSYS || errno == EOPNOTSUPP)
- return chmod_or_fchmod (name, desc, mode);
+ return chmod_or_fchmod (name, desc, mode);
return -1;
}
-
+
if (mode & (S_ISUID | S_ISGID | S_ISVTX))
{
/* We did not call chmod so far, so the special bits have not yet
- been set. */
+ been set. */
return chmod_or_fchmod (name, desc, mode);
}
return 0;
+# elif HAVE_ACLX_GET && defined ACL_AIX_WIP /* AIX */
+
+ acl_type_list_t types;
+ size_t types_size = sizeof (types);
+ acl_type_t type;
+
+ if (aclx_gettypes (name, &types, &types_size) < 0
+ || types.num_entries == 0)
+ return chmod_or_fchmod (name, desc, mode);
+
+ /* XXX Do we need to clear all types of ACLs for the given file, or is it
+ sufficient to clear the first one? */
+ type = types.entries[0];
+ if (type.u64 == ACL_AIXC)
+ {
+ union { struct acl a; char room[128]; } u;
+ int ret;
+
+ u.a.acl_len = (char *) &u.a.acl_ext[0] - (char *) &u.a; /* no entries */
+ u.a.acl_mode = mode & ~(S_IXACL | 0777);
+ u.a.u_access = (mode >> 6) & 7;
+ u.a.g_access = (mode >> 3) & 7;
+ u.a.o_access = mode & 7;
+
+ if (desc != -1)
+ ret = aclx_fput (desc, SET_ACL | SET_MODE_S_BITS,
+ type, &u.a, u.a.acl_len, mode);
+ else
+ ret = aclx_put (name, SET_ACL | SET_MODE_S_BITS,
+ type, &u.a, u.a.acl_len, mode);
+ if (!(ret < 0 && errno == ENOSYS))
+ return ret;
+ }
+ else if (type.u64 == ACL_NFS4)
+ {
+ union { nfs4_acl_int_t a; char room[128]; } u;
+ nfs4_ace_int_t *ace;
+ int ret;
+
+ u.a.aclVersion = NFS4_ACL_INT_STRUCT_VERSION;
+ u.a.aclEntryN = 0;
+ ace = &u.a.aclEntry[0];
+ {
+ ace->flags = ACE4_ID_SPECIAL;
+ ace->aceWho.special_whoid = ACE4_WHO_OWNER;
+ ace->aceType = ACE4_ACCESS_ALLOWED_ACE_TYPE;
+ ace->aceFlags = 0;
+ ace->aceMask =
+ (mode & 0400 ? ACE4_READ_DATA | ACE4_LIST_DIRECTORY : 0)
+ | (mode & 0200
+ ? ACE4_WRITE_DATA | ACE4_ADD_FILE | ACE4_APPEND_DATA
+ | ACE4_ADD_SUBDIRECTORY
+ : 0)
+ | (mode & 0100 ? ACE4_EXECUTE : 0);
+ ace->aceWhoString[0] = '\0';
+ ace->entryLen = (char *) &ace->aceWhoString[4] - (char *) ace;
+ ace = (nfs4_ace_int_t *) (char *) &ace->aceWhoString[4];
+ u.a.aclEntryN++;
+ }
+ {
+ ace->flags = ACE4_ID_SPECIAL;
+ ace->aceWho.special_whoid = ACE4_WHO_GROUP;
+ ace->aceType = ACE4_ACCESS_ALLOWED_ACE_TYPE;
+ ace->aceFlags = 0;
+ ace->aceMask =
+ (mode & 0040 ? ACE4_READ_DATA | ACE4_LIST_DIRECTORY : 0)
+ | (mode & 0020
+ ? ACE4_WRITE_DATA | ACE4_ADD_FILE | ACE4_APPEND_DATA
+ | ACE4_ADD_SUBDIRECTORY
+ : 0)
+ | (mode & 0010 ? ACE4_EXECUTE : 0);
+ ace->aceWhoString[0] = '\0';
+ ace->entryLen = (char *) &ace->aceWhoString[4] - (char *) ace;
+ ace = (nfs4_ace_int_t *) (char *) &ace->aceWhoString[4];
+ u.a.aclEntryN++;
+ }
+ {
+ ace->flags = ACE4_ID_SPECIAL;
+ ace->aceWho.special_whoid = ACE4_WHO_EVERYONE;
+ ace->aceType = ACE4_ACCESS_ALLOWED_ACE_TYPE;
+ ace->aceFlags = 0;
+ ace->aceMask =
+ (mode & 0004 ? ACE4_READ_DATA | ACE4_LIST_DIRECTORY : 0)
+ | (mode & 0002
+ ? ACE4_WRITE_DATA | ACE4_ADD_FILE | ACE4_APPEND_DATA
+ | ACE4_ADD_SUBDIRECTORY
+ : 0)
+ | (mode & 0001 ? ACE4_EXECUTE : 0);
+ ace->aceWhoString[0] = '\0';
+ ace->entryLen = (char *) &ace->aceWhoString[4] - (char *) ace;
+ ace = (nfs4_ace_int_t *) (char *) &ace->aceWhoString[4];
+ u.a.aclEntryN++;
+ }
+ u.a.aclLength = (char *) ace - (char *) &u.a;
+
+ if (desc != -1)
+ ret = aclx_fput (desc, SET_ACL | SET_MODE_S_BITS,
+ type, &u.a, u.a.aclLength, mode);
+ else
+ ret = aclx_put (name, SET_ACL | SET_MODE_S_BITS,
+ type, &u.a, u.a.aclLength, mode);
+ if (!(ret < 0 && errno == ENOSYS))
+ return ret;
+ }
+
+ return chmod_or_fchmod (name, desc, mode);
+
+# elif HAVE_STATACL /* older AIX */
+
+ union { struct acl a; char room[128]; } u;
+ int ret;
+
+ u.a.acl_len = (char *) &u.a.acl_ext[0] - (char *) &u.a; /* no entries */
+ u.a.acl_mode = mode & ~(S_IXACL | 0777);
+ u.a.u_access = (mode >> 6) & 7;
+ u.a.g_access = (mode >> 3) & 7;
+ u.a.o_access = mode & 7;
+
+ if (desc != -1)
+ ret = fchacl (desc, &u.a, u.a.acl_len);
+ else
+ ret = chacl (name, &u.a, u.a.acl_len);
+
+ if (ret < 0 && errno == ENOSYS)
+ return chmod_or_fchmod (name, desc, mode);
+
+ return ret;
+
# else /* Unknown flavor of ACLs */
return chmod_or_fchmod (name, desc, mode);
# endif
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