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coreutils/gnulib-tests/test-sameacls.c
Daniel Baumann c08a8f7410
Adding upstream version 9.7. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-21 07:57:52 +02:00

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/* Test whether two files have the same ACLs.
Copyright (C) 2008-2025 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 <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2008. */
#include <config.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#if HAVE_ACL_GET_FILE || HAVE_FACL || HAVE_GETACL || HAVE_ACLX_GET || HAVE_STATACL || HAVE_ACLSORT
# include <sys/types.h>
# include <sys/acl.h>
#endif
#if HAVE_ACLV_H
# include <sys/types.h>
# include <aclv.h>
#endif
#include "read-file.h"
#include "xalloc.h"
#include "macros.h"
int
main (int argc, char *argv[])
{
const char *file1;
const char *file2;
ASSERT (argc == 3);
file1 = argv[1];
file2 = argv[2];
/* Compare the contents of the two files. */
{
size_t size1;
char *contents1;
size_t size2;
char *contents2;
contents1 = read_file (file1, 0, &size1);
if (contents1 == NULL)
{
fprintf (stderr, "error reading file %s: errno = %d\n", file1, errno);
fflush (stderr);
abort ();
}
contents2 = read_file (file2, 0, &size2);
if (contents2 == NULL)
{
fprintf (stderr, "error reading file %s: errno = %d\n", file2, errno);
fflush (stderr);
abort ();
}
if (size2 != size1)
{
fprintf (stderr, "files %s and %s have different sizes\n",
file1, file2);
fflush (stderr);
abort ();
}
if (memcmp (contents1, contents2, size1) != 0)
{
fprintf (stderr, "files %s and %s have different contents\n",
file1, file2);
fflush (stderr);
abort ();
}
free (contents2);
free (contents1);
}
/* Compare the access permissions of the two files, including ACLs. */
{
struct stat statbuf1;
struct stat statbuf2;
if (stat (file1, &statbuf1) < 0)
{
fprintf (stderr, "error accessing file %s: errno = %d\n", file1, errno);
fflush (stderr);
abort ();
}
if (stat (file2, &statbuf2) < 0)
{
fprintf (stderr, "error accessing file %s: errno = %d\n", file2, errno);
fflush (stderr);
abort ();
}
if (statbuf1.st_mode != statbuf2.st_mode)
{
fprintf (stderr, "files %s and %s have different access modes: %03o and %03o\n",
file1, file2,
(unsigned int) statbuf1.st_mode, (unsigned int) statbuf2.st_mode);
return 1;
}
}
{
#if HAVE_ACL_GET_FILE /* Linux, FreeBSD, Mac OS X, IRIX, Tru64 */
static const int types[] =
{
ACL_TYPE_ACCESS
# if HAVE_ACL_TYPE_EXTENDED /* Mac OS X */
, ACL_TYPE_EXTENDED
# endif
};
int t;
for (t = 0; t < sizeof (types) / sizeof (types[0]); t++)
{
int type = types[t];
acl_t acl1;
char *text1;
int errno1;
acl_t acl2;
char *text2;
int errno2;
acl1 = acl_get_file (file1, type);
if (acl1 == (acl_t)NULL)
{
text1 = NULL;
errno1 = errno;
}
else
{
text1 = acl_to_text (acl1, NULL);
if (text1 == NULL)
errno1 = errno;
else
errno1 = 0;
}
acl2 = acl_get_file (file2, type);
if (acl2 == (acl_t)NULL)
{
text2 = NULL;
errno2 = errno;
}
else
{
text2 = acl_to_text (acl2, NULL);
if (text2 == NULL)
errno2 = errno;
else
errno2 = 0;
}
if (acl1 != (acl_t)NULL)
{
if (acl2 != (acl_t)NULL)
{
if (text1 != NULL)
{
if (text2 != NULL)
{
if (strcmp (text1, text2) != 0)
{
fprintf (stderr, "files %s and %s have different ACLs:\n%s\n%s\n",
file1, file2, text1, text2);
return 1;
}
}
else
{
fprintf (stderr, "file %s has a valid ACL, but file %s has an invalid ACL\n",
file1, file2);
return 1;
}
}
else
{
if (text2 != NULL)
{
fprintf (stderr, "file %s has an invalid ACL, but file %s has a valid ACL\n",
file1, file2);
return 1;
}
else
{
if (errno1 != errno2)
{
fprintf (stderr, "files %s and %s have differently invalid ACLs, errno = %d vs. %d\n",
file1, file2, errno1, errno2);
return 1;
}
}
}
}
else
{
fprintf (stderr, "file %s has an ACL, but file %s has no ACL\n",
file1, file2);
return 1;
}
}
else
{
if (acl2 != (acl_t)NULL)
{
fprintf (stderr, "file %s has no ACL, but file %s has an ACL\n",
file1, file2);
return 1;
}
}
acl_free (text2);
if (acl2 != (acl_t)NULL)
acl_free (acl2);
acl_free (text1);
if (acl1 != (acl_t)NULL)
acl_free (acl1);
}
#elif HAVE_FACL && defined GETACL /* Solaris, Cygwin, not HP-UX */
int count1;
int count2;
count1 = acl (file1, GETACLCNT, 0, NULL);
if (count1 < 0 && errno == ENOSYS) /* Can happen on Solaris 10 with ZFS */
count1 = 0;
count2 = acl (file2, GETACLCNT, 0, NULL);
if (count2 < 0 && errno == ENOSYS) /* Can happen on Solaris 10 with ZFS */
count2 = 0;
if (count1 < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (count2 < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
if (count1 != count2)
{
fprintf (stderr, "files %s and %s have different number of ACLs: %d and %d\n",
file1, file2, count1, count2);
return 1;
}
else
{
aclent_t *entries1 = XNMALLOC (count1, aclent_t);
aclent_t *entries2 = XNMALLOC (count2, aclent_t);
int i;
if (count1 > 0 && acl (file1, GETACL, count1, entries1) < count1)
{
fprintf (stderr, "error retrieving the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (count2 > 0 && acl (file2, GETACL, count2, entries2) < count1)
{
fprintf (stderr, "error retrieving the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
for (i = 0; i < count1; i++)
{
if (entries1[i].a_type != entries2[i].a_type)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different types %d and %d\n",
file1, file2, i, entries1[i].a_type, entries2[i].a_type);
return 1;
}
if (entries1[i].a_id != entries2[i].a_id)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different ids %d and %d\n",
file1, file2, i, (int)entries1[i].a_id, (int)entries2[i].a_id);
return 1;
}
if (entries1[i].a_perm != entries2[i].a_perm)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different permissions %03o and %03o\n",
file1, file2, i, (unsigned int) entries1[i].a_perm, (unsigned int) entries2[i].a_perm);
return 1;
}
}
free (entries2);
free (entries1);
}
# ifdef ACE_GETACL
count1 = acl (file1, ACE_GETACLCNT, 0, NULL);
if (count1 < 0 && errno == EINVAL)
count1 = 0;
count2 = acl (file2, ACE_GETACLCNT, 0, NULL);
if (count2 < 0 && errno == EINVAL)
count2 = 0;
if (count1 < 0)
{
fprintf (stderr, "error accessing the ACE-ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (count2 < 0)
{
fprintf (stderr, "error accessing the ACE-ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
{
ace_t *entries1 = XNMALLOC (count1, ace_t);
ace_t *entries2 = XNMALLOC (count2, ace_t);
int ret;
int i;
ret = acl (file1, ACE_GETACL, count1, entries1);
if (ret < 0 && errno == EINVAL)
count1 = 0;
else if (ret < count1)
{
fprintf (stderr, "error retrieving the ACE-ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
ret = acl (file2, ACE_GETACL, count2, entries2);
if (ret < 0 && errno == EINVAL)
count2 = 0;
else if (ret < count2)
{
fprintf (stderr, "error retrieving the ACE-ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
if (count1 != count2)
{
fprintf (stderr, "files %s and %s have different number of ACE-ACLs: %d and %d\n",
file1, file2, count1, count2);
return 1;
}
for (i = 0; i < count1; i++)
{
if (entries1[i].a_type != entries2[i].a_type)
{
fprintf (stderr, "files %s and %s: different ACE-ACL entry #%d: different types %d and %d\n",
file1, file2, i, entries1[i].a_type, entries2[i].a_type);
return 1;
}
if (entries1[i].a_who != entries2[i].a_who)
{
fprintf (stderr, "files %s and %s: different ACE-ACL entry #%d: different ids %d and %d\n",
file1, file2, i, (int)entries1[i].a_who, (int)entries2[i].a_who);
return 1;
}
if (entries1[i].a_access_mask != entries2[i].a_access_mask)
{
fprintf (stderr, "files %s and %s: different ACE-ACL entry #%d: different access masks %03o and %03o\n",
file1, file2, i, (unsigned int) entries1[i].a_access_mask, (unsigned int) entries2[i].a_access_mask);
return 1;
}
if (entries1[i].a_flags != entries2[i].a_flags)
{
fprintf (stderr, "files %s and %s: different ACE-ACL entry #%d: different flags 0x%x and 0x%x\n",
file1, file2, i, (unsigned int) entries1[i].a_flags, (unsigned int) entries2[i].a_flags);
return 1;
}
}
free (entries2);
free (entries1);
}
# endif
#elif HAVE_GETACL /* HP-UX */
int count1;
int count2;
count1 = getacl (file1, 0, NULL);
if (count1 < 0
&& (errno == ENOSYS || errno == EOPNOTSUPP || errno == ENOTSUP))
count1 = 0;
count2 = getacl (file2, 0, NULL);
if (count2 < 0
&& (errno == ENOSYS || errno == EOPNOTSUPP || errno == ENOTSUP))
count2 = 0;
if (count1 < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (count2 < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
if (count1 != count2)
{
fprintf (stderr, "files %s and %s have different number of ACLs: %d and %d\n",
file1, file2, count1, count2);
return 1;
}
else if (count1 > 0)
{
struct acl_entry *entries1 = XNMALLOC (count1, struct acl_entry);
struct acl_entry *entries2 = XNMALLOC (count2, struct acl_entry);
int i;
if (getacl (file1, count1, entries1) < count1)
{
fprintf (stderr, "error retrieving the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (getacl (file2, count2, entries2) < count1)
{
fprintf (stderr, "error retrieving the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
for (i = 0; i < count1; i++)
{
if (entries1[i].uid != entries2[i].uid)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different uids %d and %d\n",
file1, file2, i, (int)entries1[i].uid, (int)entries2[i].uid);
return 1;
}
if (entries1[i].gid != entries2[i].gid)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different gids %d and %d\n",
file1, file2, i, (int)entries1[i].gid, (int)entries2[i].gid);
return 1;
}
if (entries1[i].mode != entries2[i].mode)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different permissions %03o and %03o\n",
file1, file2, i, (unsigned int) entries1[i].mode, (unsigned int) entries2[i].mode);
return 1;
}
}
free (entries2);
free (entries1);
}
# if HAVE_ACLV_H /* HP-UX >= 11.11 */
{
struct acl dummy_entries[NACLVENTRIES];
count1 = acl ((char *) file1, ACL_CNT, NACLVENTRIES, dummy_entries);
if (count1 < 0
&& (errno == ENOSYS || errno == EOPNOTSUPP || errno == EINVAL))
count1 = 0;
count2 = acl ((char *) file2, ACL_CNT, NACLVENTRIES, dummy_entries);
if (count2 < 0
&& (errno == ENOSYS || errno == EOPNOTSUPP || errno == EINVAL))
count2 = 0;
}
if (count1 < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (count2 < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
if (count1 != count2)
{
fprintf (stderr, "files %s and %s have different number of ACLs: %d and %d\n",
file1, file2, count1, count2);
return 1;
}
else if (count1 > 0)
{
struct acl *entries1 = XNMALLOC (count1, struct acl);
struct acl *entries2 = XNMALLOC (count2, struct acl);
int i;
if (acl ((char *) file1, ACL_GET, count1, entries1) < count1)
{
fprintf (stderr, "error retrieving the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (acl ((char *) file2, ACL_GET, count2, entries2) < count1)
{
fprintf (stderr, "error retrieving the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
for (i = 0; i < count1; i++)
{
if (entries1[i].a_type != entries2[i].a_type)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different types %d and %d\n",
file1, file2, i, entries1[i].a_type, entries2[i].a_type);
return 1;
}
if (entries1[i].a_id != entries2[i].a_id)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different ids %d and %d\n",
file1, file2, i, (int)entries1[i].a_id, (int)entries2[i].a_id);
return 1;
}
if (entries1[i].a_perm != entries2[i].a_perm)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different permissions %03o and %03o\n",
file1, file2, i, (unsigned int) entries1[i].a_perm, (unsigned int) entries2[i].a_perm);
return 1;
}
}
free (entries2);
free (entries1);
}
# endif
#elif HAVE_ACLX_GET /* AIX */
acl_type_t type1;
char acl1[1000];
size_t aclsize1 = sizeof (acl1);
mode_t mode1;
char text1[1000];
size_t textsize1 = sizeof (text1);
acl_type_t type2;
char acl2[1000];
size_t aclsize2 = sizeof (acl2);
mode_t mode2;
char text2[1000];
size_t textsize2 = sizeof (text2);
/* The docs say that type1 being 0 is equivalent to ACL_ANY, but it is not
true, in AIX 5.3. */
type1.u64 = ACL_ANY;
if (aclx_get (file1, 0, &type1, acl1, &aclsize1, &mode1) < 0)
{
if (errno == ENOSYS)
text1[0] = '\0';
else
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
}
else
if (aclx_printStr (text1, &textsize1, acl1, aclsize1, type1, file1, 0) < 0)
{
fprintf (stderr, "cannot convert the ACLs of file %s to text\n", file1);
fflush (stderr);
abort ();
}
/* The docs say that type2 being 0 is equivalent to ACL_ANY, but it is not
true, in AIX 5.3. */
type2.u64 = ACL_ANY;
if (aclx_get (file2, 0, &type2, acl2, &aclsize2, &mode2) < 0)
{
if (errno == ENOSYS)
text2[0] = '\0';
else
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
}
else
if (aclx_printStr (text2, &textsize2, acl2, aclsize2, type2, file2, 0) < 0)
{
fprintf (stderr, "cannot convert the ACLs of file %s to text\n", file2);
fflush (stderr);
abort ();
}
if (strcmp (text1, text2) != 0)
{
fprintf (stderr, "files %s and %s have different ACLs:\n%s\n%s\n",
file1, file2, text1, text2);
return 1;
}
#elif HAVE_STATACL /* older AIX */
union { struct acl a; char room[4096]; } acl1;
union { struct acl a; char room[4096]; } acl2;
unsigned int i;
if (statacl (file1, STX_NORMAL, &acl1.a, sizeof (acl1)) < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (statacl (file2, STX_NORMAL, &acl2.a, sizeof (acl2)) < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
if (acl1.a.acl_len != acl2.a.acl_len)
{
fprintf (stderr, "files %s and %s have different ACL lengths: %u and %u\n",
file1, file2, acl1.a.acl_len, acl2.a.acl_len);
return 1;
}
if (acl1.a.acl_mode != acl2.a.acl_mode)
{
fprintf (stderr, "files %s and %s have different ACL modes: %03o and %03o\n",
file1, file2, acl1.a.acl_mode, acl2.a.acl_mode);
return 1;
}
if (acl1.a.u_access != acl2.a.u_access
|| acl1.a.g_access != acl2.a.g_access
|| acl1.a.o_access != acl2.a.o_access)
{
fprintf (stderr, "files %s and %s have different ACL access masks: %03o %03o %03o and %03o %03o %03o\n",
file1, file2,
acl1.a.u_access, acl1.a.g_access, acl1.a.o_access,
acl2.a.u_access, acl2.a.g_access, acl2.a.o_access);
return 1;
}
if (memcmp (acl1.a.acl_ext, acl2.a.acl_ext, acl1.a.acl_len) != 0)
{
fprintf (stderr, "files %s and %s have different ACL entries\n",
file1, file2);
return 1;
}
#elif HAVE_ACLSORT /* NonStop Kernel */
int count1;
int count2;
count1 = acl ((char *) file1, ACL_CNT, NACLENTRIES, NULL);
count2 = acl ((char *) file2, ACL_CNT, NACLENTRIES, NULL);
if (count1 < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (count2 < 0)
{
fprintf (stderr, "error accessing the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
if (count1 != count2)
{
fprintf (stderr, "files %s and %s have different number of ACLs: %d and %d\n",
file1, file2, count1, count2);
return 1;
}
else if (count1 > 0)
{
struct acl *entries1 = XNMALLOC (count1, struct acl);
struct acl *entries2 = XNMALLOC (count2, struct acl);
int i;
if (acl ((char *) file1, ACL_GET, count1, entries1) < count1)
{
fprintf (stderr, "error retrieving the ACLs of file %s\n", file1);
fflush (stderr);
abort ();
}
if (acl ((char *) file2, ACL_GET, count2, entries2) < count1)
{
fprintf (stderr, "error retrieving the ACLs of file %s\n", file2);
fflush (stderr);
abort ();
}
for (i = 0; i < count1; i++)
{
if (entries1[i].a_type != entries2[i].a_type)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different types %d and %d\n",
file1, file2, i, entries1[i].a_type, entries2[i].a_type);
return 1;
}
if (entries1[i].a_id != entries2[i].a_id)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different ids %d and %d\n",
file1, file2, i, (int)entries1[i].a_id, (int)entries2[i].a_id);
return 1;
}
if (entries1[i].a_perm != entries2[i].a_perm)
{
fprintf (stderr, "files %s and %s: different ACL entry #%d: different permissions %03o and %03o\n",
file1, file2, i, (unsigned int) entries1[i].a_perm, (unsigned int) entries2[i].a_perm);
return 1;
}
}
free (entries2);
free (entries1);
}
#endif
}
return test_exit_status;
}
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