/* copy-acl.c - copy access control list from one file to another file
- Copyright (C) 2002-2003, 2005-2009 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
Return -2 and set errno for an error relating to the source file.
Return -1 and set errno for an error relating to the destination file. */
-static int
+int
qcopy_acl (const char *src_name, int source_desc, const char *dst_name,
int dest_desc, mode_t mode)
{
#if USE_ACL && HAVE_ACL_GET_FILE
/* POSIX 1003.1e (draft 17 -- abandoned) specific version. */
- /* Linux, FreeBSD, MacOS X, IRIX, Tru64 */
-# if MODE_INSIDE_ACL
+ /* Linux, FreeBSD, Mac OS X, IRIX, Tru64 */
+# if !HAVE_ACL_TYPE_EXTENDED
/* Linux, FreeBSD, IRIX, Tru64 */
acl_t acl;
else
acl_free (acl);
- 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, and either the mode and the ACL are
separate or special bits are to be set which don't fit into ACLs. */
}
return 0;
-# else /* !MODE_INSIDE_ACL */
- /* MacOS X */
-
-# if !HAVE_ACL_TYPE_EXTENDED
-# error Must have ACL_TYPE_EXTENDED
-# endif
+# else /* HAVE_ACL_TYPE_EXTENDED */
+ /* Mac OS X */
- /* On MacOS X, acl_get_file (name, ACL_TYPE_ACCESS)
- and acl_get_file (name, ACL_TYPE_DEFAULT)
+ /* On Mac OS 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)
- or acl_get_fd (open (name, ...))
+ 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)
- and acl_set_file (name, ACL_TYPE_DEFAULT, 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;
#elif USE_ACL && defined GETACL /* Solaris, Cygwin, not HP-UX */
-# if defined ACL_NO_TRIVIAL
- /* Solaris 10 (newer version), which has additional API declared in
- <sys/acl.h> (acl_t) and implemented in libsec (acl_set, acl_trivial,
- acl_fromtext, ...). */
-
- int ret;
- 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)
- return -2;
-
- ret = qset_acl (dst_name, dest_desc, mode);
- if (ret != 0)
- return -1;
-
- if (aclp)
- {
- ret = (dest_desc < 0
- ? acl_set (dst_name, aclp)
- : facl_set (dest_desc, aclp));
- if (ret != 0)
- {
- int saved_errno = errno;
-
- acl_free (aclp);
- errno = saved_errno;
- return -1;
- }
- acl_free (aclp);
- }
-
- return 0;
-
-# else /* Solaris, Cygwin, general case */
-
/* Solaris 2.5 through Solaris 10, Cygwin, and contemporaneous versions
of Unixware. The acl() call returns the access and default ACL both
at once. */
-# ifdef ACE_GETACL
+# ifdef ACE_GETACL
int ace_count;
ace_t *ace_entries;
-# endif
+# endif
int count;
aclent_t *entries;
int did_chmod;
int saved_errno;
int ret;
-# ifdef ACE_GETACL
+# 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).
There is an API
return -2;
}
- if ((source_desc != -1
- ? facl (source_desc, ACE_GETACL, ace_count, ace_entries)
- : acl (src_name, ACE_GETACL, ace_count, ace_entries))
- == ace_count)
+ ret = (source_desc != -1
+ ? facl (source_desc, ACE_GETACL, ace_count, ace_entries)
+ : acl (src_name, ACE_GETACL, ace_count, ace_entries));
+ if (ret < 0)
+ {
+ free (ace_entries);
+ if (errno == ENOSYS || errno == EINVAL)
+ {
+ ace_count = 0;
+ ace_entries = NULL;
+ break;
+ }
+ else
+ return -2;
+ }
+ if (ret == ace_count)
break;
/* Huh? The number of ACL entries changed since the last call.
Repeat. */
}
-# endif
+# endif
for (;;)
{
if (count < 0)
{
- if (errno == ENOSYS || errno == ENOTSUP)
+ if (errno == ENOSYS || errno == ENOTSUP || errno == EOPNOTSUPP)
{
count = 0;
entries = NULL;
}
/* Is there an ACL of either kind? */
-# ifdef ACE_GETACL
+# ifdef ACE_GETACL
if (ace_count == 0)
-# endif
+# endif
if (count == 0)
return qset_acl (dst_name, dest_desc, mode);
if (ret < 0 && saved_errno == 0)
{
saved_errno = errno;
- if (errno == ENOSYS && !acl_nontrivial (count, entries))
+ if ((errno == ENOSYS || errno == EOPNOTSUPP || errno == EINVAL)
+ && !acl_nontrivial (count, entries))
saved_errno = 0;
}
else
}
free (entries);
-# ifdef ACE_GETACL
+# ifdef ACE_GETACL
if (ace_count > 0)
{
ret = (dest_desc != -1
}
}
free (ace_entries);
-# endif
+# endif
if (MODE_INSIDE_ACL
&& did_chmod <= ((mode & (S_ISUID | S_ISGID | S_ISVTX)) ? 1 : 0))
}
return 0;
-# endif
-
#elif USE_ACL && HAVE_GETACL /* HP-UX */
- int count;
struct acl_entry entries[NACLENTRIES];
+ int count;
+# if HAVE_ACLV_H
+ struct acl aclv_entries[NACLVENTRIES];
+ int aclv_count;
+# endif
+ int did_chmod;
+ int saved_errno;
int ret;
- for (;;)
- {
- count = (source_desc != -1
- ? fgetacl (source_desc, 0, NULL)
- : getacl (src_name, 0, NULL));
-
- if (count < 0)
- {
- if (errno == ENOSYS || errno == EOPNOTSUPP)
- {
- count = 0;
- break;
- }
- else
- return -2;
- }
-
- if (count == 0)
- break;
+ count = (source_desc != -1
+ ? fgetacl (source_desc, NACLENTRIES, entries)
+ : getacl (src_name, NACLENTRIES, entries));
+ if (count < 0)
+ {
+ if (errno == ENOSYS || errno == EOPNOTSUPP || errno == ENOTSUP)
+ count = 0;
+ else
+ return -2;
+ }
+ else if (count > 0)
+ {
if (count > NACLENTRIES)
/* If NACLENTRIES cannot be trusted, use dynamic memory allocation. */
abort ();
+ }
- if ((source_desc != -1
- ? fgetacl (source_desc, count, entries)
- : getacl (src_name, count, entries))
- == count)
- break;
- /* Huh? The number of ACL entries changed since the last call.
- Repeat. */
+# if HAVE_ACLV_H
+ aclv_count = acl ((char *) src_name, ACL_GET, NACLVENTRIES, aclv_entries);
+
+ if (aclv_count < 0)
+ {
+ if (errno == ENOSYS || errno == EOPNOTSUPP || errno == EINVAL)
+ count = 0;
+ else
+ return -2;
}
+ else if (aclv_count > 0)
+ {
+ if (aclv_count > NACLVENTRIES)
+ /* If NACLVENTRIES cannot be trusted, use dynamic memory allocation. */
+ abort ();
+ }
+# endif
if (count == 0)
- return qset_acl (dst_name, dest_desc, mode);
+# if HAVE_ACLV_H
+ if (aclv_count == 0)
+# endif
+ return qset_acl (dst_name, dest_desc, mode);
- ret = (dest_desc != -1
- ? fsetacl (dest_desc, count, entries)
- : setacl (dst_name, count, entries));
- if (ret < 0)
- {
- int saved_errno = errno;
+ did_chmod = 0; /* set to 1 once the mode bits in 0777 have been set */
+ saved_errno = 0; /* the first non-ignorable error code */
- if (errno == ENOSYS || errno == EOPNOTSUPP)
+ if (count > 0)
+ {
+ ret = (dest_desc != -1
+ ? fsetacl (dest_desc, count, entries)
+ : setacl (dst_name, count, entries));
+ if (ret < 0 && saved_errno == 0)
{
- struct stat source_statbuf;
-
- if ((source_desc != -1
- ? fstat (source_desc, &source_statbuf)
- : stat (src_name, &source_statbuf)) == 0)
+ saved_errno = errno;
+ if (errno == ENOSYS || errno == EOPNOTSUPP || errno == ENOTSUP)
{
- if (!acl_nontrivial (count, entries, &source_statbuf))
- return chmod_or_fchmod (dst_name, dest_desc, mode);
+ struct stat source_statbuf;
+
+ if ((source_desc != -1
+ ? fstat (source_desc, &source_statbuf)
+ : stat (src_name, &source_statbuf)) == 0)
+ {
+ if (!acl_nontrivial (count, entries, &source_statbuf))
+ saved_errno = 0;
+ }
+ else
+ saved_errno = errno;
}
- else
- saved_errno = errno;
}
+ else
+ did_chmod = 1;
+ }
- chmod_or_fchmod (dst_name, dest_desc, mode);
- errno = saved_errno;
- return -1;
+# if HAVE_ACLV_H
+ if (aclv_count > 0)
+ {
+ ret = acl ((char *) dst_name, ACL_SET, aclv_count, aclv_entries);
+ if (ret < 0 && saved_errno == 0)
+ {
+ saved_errno = errno;
+ if (errno == ENOSYS || errno == EOPNOTSUPP || errno == EINVAL)
+ {
+ if (!aclv_nontrivial (aclv_count, aclv_entries))
+ saved_errno = 0;
+ }
+ }
+ else
+ did_chmod = 1;
}
+# endif
- if (mode & (S_ISUID | S_ISGID | S_ISVTX))
+ if (did_chmod <= ((mode & (S_ISUID | S_ISGID | S_ISVTX)) ? 1 : 0))
{
- /* 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. */
+ /* We did not call chmod so far, and special bits are to be set which
+ don't fit into ACLs. */
- return chmod_or_fchmod (dst_name, dest_desc, mode);
+ if (chmod_or_fchmod (dst_name, dest_desc, mode) != 0)
+ {
+ if (saved_errno == 0)
+ saved_errno = errno;
+ }
+ }
+
+ if (saved_errno)
+ {
+ errno = saved_errno;
+ return -1;
}
return 0;
return 0;
+#elif USE_ACL && HAVE_ACLSORT /* NonStop Kernel */
+
+ struct acl entries[NACLENTRIES];
+ int count;
+ int ret;
+
+ count = acl ((char *) src_name, ACL_GET, NACLENTRIES, entries);
+
+ if (count < 0)
+ {
+ if (0)
+ count = 0;
+ else
+ return -2;
+ }
+ else if (count > 0)
+ {
+ if (count > NACLENTRIES)
+ /* If NACLENTRIES cannot be trusted, use dynamic memory allocation. */
+ abort ();
+ }
+
+ if (count == 0)
+ return qset_acl (dst_name, dest_desc, mode);
+
+ ret = acl ((char *) dst_name, ACL_SET, count, entries);
+ if (ret < 0)
+ {
+ int saved_errno = errno;
+
+ if (0)
+ {
+ if (!acl_nontrivial (count, entries))
+ return chmod_or_fchmod (dst_name, dest_desc, mode);
+ }
+
+ chmod_or_fchmod (dst_name, dest_desc, mode);
+ errno = saved_errno;
+ return -1;
+ }
+
+ if (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. */
+
+ return chmod_or_fchmod (dst_name, dest_desc, mode);
+ }
+ return 0;
+
#else
return qset_acl (dst_name, dest_desc, mode);
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,
{
case -2:
error (0, errno, "%s", quote (src_name));
- return -1;
+ break;
case -1:
error (0, errno, _("preserving permissions for %s"), quote (dst_name));
- return -1;
+ break;
default:
- return 0;
+ break;
}
+ return ret;
}
projects / gnulib.git / blobdiff