/* 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, 2005-2009 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
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
{
return -1;
}
}
-
- if (mode & (S_ISUID | S_ISGID | S_ISVTX))
+
+ 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
- been set. */
+ been set. */
return chmod_or_fchmod (name, desc, mode);
}
return 0;
# endif
+# elif HAVE_GETACL /* HP-UX */
+
+ struct stat statbuf;
+ struct acl_entry entries[3];
+ int ret;
+
+ if (desc != -1)
+ ret = fstat (desc, &statbuf);
+ else
+ ret = stat (name, &statbuf);
+ if (ret < 0)
+ return -1;
+
+ entries[0].uid = statbuf.st_uid;
+ entries[0].gid = ACL_NSGROUP;
+ entries[0].mode = (mode >> 6) & 7;
+ entries[1].uid = ACL_NSUSER;
+ entries[1].gid = statbuf.st_gid;
+ entries[1].mode = (mode >> 3) & 7;
+ entries[2].uid = ACL_NSUSER;
+ entries[2].gid = ACL_NSGROUP;
+ entries[2].mode = mode & 7;
+
+ if (desc != -1)
+ ret = fsetacl (desc, sizeof (entries) / sizeof (struct acl_entry), entries);
+ else
+ ret = setacl (name, sizeof (entries) / sizeof (struct acl_entry), entries);
+ if (ret < 0)
+ {
+ if (errno == ENOSYS || errno == EOPNOTSUPP)
+ 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. */
+ return chmod_or_fchmod (name, desc, mode);
+ }
+ return 0;
+
+# elif HAVE_ACLX_GET && 0 /* AIX */
+
+ /* TODO: use aclx_fput or aclx_put, respectively */
+
+# 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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