-/* -*- buffer-read-only: t -*- vi: set ro: */
-/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
/* Test whether a file has a nontrivial access control list.
- Copyright (C) 2002-2003, 2005-2014 Free Software Foundation, Inc.
+ Copyright (C) 2002-2003, 2005-2015 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
#include "acl-internal.h"
+#if GETXATTR_WITH_POSIX_ACLS
+# include <sys/xattr.h>
+# include <linux/xattr.h>
+#endif
-#if USE_ACL && HAVE_ACL_GET_FILE
-
-# if HAVE_ACL_TYPE_EXTENDED /* Mac OS X */
-
-/* ACL is an ACL, from a file, stored as type ACL_TYPE_EXTENDED.
- Return 1 if the given ACL is non-trivial.
- Return 0 if it is trivial. */
-int
-acl_extended_nontrivial (acl_t acl)
-{
- /* acl is non-trivial if it is non-empty. */
- return (acl_entries (acl) > 0);
-}
-
-# else /* Linux, FreeBSD, IRIX, Tru64 */
+/* Return 1 if NAME has a nontrivial access control list,
+ 0 if ACLs are not supported, or if NAME has no or only a base ACL,
+ and -1 (setting errno) on error. Note callers can determine
+ if ACLs are not supported as errno is set in that case also.
+ SB must be set to the stat buffer of NAME,
+ obtained through stat() or lstat(). */
-/* ACL is an ACL, from a file, stored as type ACL_TYPE_ACCESS.
- Return 1 if the given ACL is non-trivial.
- Return 0 if it is trivial, i.e. equivalent to a simple stat() mode.
- Return -1 and set errno upon failure to determine it. */
int
-acl_access_nontrivial (acl_t acl)
+file_has_acl (char const *name, struct stat const *sb)
{
- /* acl is non-trivial if it has some entries other than for "user::",
- "group::", and "other::". Normally these three should be present
- at least, allowing us to write
- return (3 < acl_entries (acl));
- but the following code is more robust. */
-# if HAVE_ACL_FIRST_ENTRY /* Linux, FreeBSD */
-
- acl_entry_t ace;
- int got_one;
-
- for (got_one = acl_get_entry (acl, ACL_FIRST_ENTRY, &ace);
- got_one > 0;
- got_one = acl_get_entry (acl, ACL_NEXT_ENTRY, &ace))
+#if USE_ACL
+ if (! S_ISLNK (sb->st_mode))
{
- acl_tag_t tag;
- if (acl_get_tag_type (ace, &tag) < 0)
- return -1;
- if (!(tag == ACL_USER_OBJ || tag == ACL_GROUP_OBJ || tag == ACL_OTHER))
- return 1;
- }
- return got_one;
-# elif HAVE_ACL_TO_SHORT_TEXT /* IRIX */
- /* Don't use acl_get_entry: it is undocumented. */
+# if GETXATTR_WITH_POSIX_ACLS
- int count = acl->acl_cnt;
- int i;
-
- for (i = 0; i < count; i++)
- {
- acl_entry_t ace = &acl->acl_entry[i];
- acl_tag_t tag = ace->ae_tag;
+ ssize_t ret;
- if (!(tag == ACL_USER_OBJ || tag == ACL_GROUP_OBJ
- || tag == ACL_OTHER_OBJ))
+ ret = getxattr (name, XATTR_NAME_POSIX_ACL_ACCESS, NULL, 0);
+ if (ret < 0 && errno == ENODATA)
+ ret = 0;
+ else if (ret > 0)
return 1;
- }
- return 0;
-
-# elif HAVE_ACL_FREE_TEXT /* Tru64 */
- /* Don't use acl_get_entry: it takes only one argument and does not work. */
-
- int count = acl->acl_num;
- acl_entry_t ace;
- for (ace = acl->acl_first; count > 0; ace = ace->next, count--)
- {
- acl_tag_t tag;
- acl_perm_t perm;
-
- tag = ace->entry->acl_type;
- if (!(tag == ACL_USER_OBJ || tag == ACL_GROUP_OBJ || tag == ACL_OTHER))
- return 1;
-
- perm = ace->entry->acl_perm;
- /* On Tru64, perm can also contain non-standard bits such as
- PERM_INSERT, PERM_DELETE, PERM_MODIFY, PERM_LOOKUP, ... */
- if ((perm & ~(ACL_READ | ACL_WRITE | ACL_EXECUTE)) != 0)
- return 1;
- }
- return 0;
-
-# else
-
- errno = ENOSYS;
- return -1;
-# endif
-}
-
-# endif
-
-
-#elif USE_ACL && HAVE_FACL && defined GETACL /* Solaris, Cygwin, not HP-UX */
-
-/* Test an ACL retrieved with GETACL.
- Return 1 if the given ACL, consisting of COUNT entries, is non-trivial.
- Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
-int
-acl_nontrivial (int count, aclent_t *entries)
-{
- int i;
-
- for (i = 0; i < count; i++)
- {
- aclent_t *ace = &entries[i];
-
- /* Note: If ace->a_type = USER_OBJ, ace->a_id is the st_uid from stat().
- If ace->a_type = GROUP_OBJ, ace->a_id is the st_gid from stat().
- We don't need to check ace->a_id in these cases. */
- if (!(ace->a_type == USER_OBJ
- || ace->a_type == GROUP_OBJ
- || ace->a_type == OTHER_OBJ
- /* Note: Cygwin does not return a CLASS_OBJ ("mask:") entry
- sometimes. */
- || ace->a_type == CLASS_OBJ))
- return 1;
- }
- return 0;
-}
-
-# ifdef ACE_GETACL
-
-/* A shortcut for a bitmask. */
-# define NEW_ACE_WRITEA_DATA (NEW_ACE_WRITE_DATA | NEW_ACE_APPEND_DATA)
-
-/* Test an ACL retrieved with ACE_GETACL.
- Return 1 if the given ACL, consisting of COUNT entries, is non-trivial.
- Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
-int
-acl_ace_nontrivial (int count, ace_t *entries)
-{
- int i;
-
- /* 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?
- 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 old_convention = 0;
-
- for (i = 0; i < count; i++)
- if (entries[i].a_flags & (OLD_ACE_OWNER | OLD_ACE_GROUP | OLD_ACE_OTHER))
- {
- old_convention = 1;
- break;
- }
-
- if (old_convention)
- /* Running on Solaris 10. */
- for (i = 0; i < count; i++)
- {
- ace_t *ace = &entries[i];
-
- /* Note:
- If ace->a_flags = ACE_OWNER, ace->a_who is the st_uid from stat().
- If ace->a_flags = ACE_GROUP, ace->a_who is the st_gid from stat().
- We don't need to check ace->a_who in these cases. */
- if (!(ace->a_type == OLD_ALLOW
- && (ace->a_flags == OLD_ACE_OWNER
- || ace->a_flags == OLD_ACE_GROUP
- || ace->a_flags == OLD_ACE_OTHER)))
- return 1;
- }
- else
- {
- /* Running on Solaris 10 (newer version) or Solaris 11. */
- unsigned int access_masks[6] =
- {
- 0, /* owner@ deny */
- 0, /* owner@ allow */
- 0, /* group@ deny */
- 0, /* group@ allow */
- 0, /* everyone@ deny */
- 0 /* everyone@ allow */
- };
-
- for (i = 0; i < count; i++)
+ if (ret == 0 && S_ISDIR (sb->st_mode))
{
- ace_t *ace = &entries[i];
- unsigned int index1;
- unsigned int index2;
-
- if (ace->a_type == NEW_ACE_ACCESS_ALLOWED_ACE_TYPE)
- index1 = 1;
- else if (ace->a_type == NEW_ACE_ACCESS_DENIED_ACE_TYPE)
- index1 = 0;
- else
+ ret = getxattr (name, XATTR_NAME_POSIX_ACL_DEFAULT, NULL, 0);
+ if (ret < 0 && errno == ENODATA)
+ ret = 0;
+ else if (ret > 0)
return 1;
-
- if (ace->a_flags == NEW_ACE_OWNER)
- index2 = 0;
- else if (ace->a_flags == (NEW_ACE_GROUP | NEW_ACE_IDENTIFIER_GROUP))
- index2 = 2;
- else if (ace->a_flags == NEW_ACE_EVERYONE)
- index2 = 4;
- else
- return 1;
-
- access_masks[index1 + index2] |= ace->a_access_mask;
- }
-
- /* The same bit shouldn't be both allowed and denied. */
- if (access_masks[0] & access_masks[1])
- return 1;
- if (access_masks[2] & access_masks[3])
- return 1;
- if (access_masks[4] & access_masks[5])
- return 1;
-
- /* Check minimum masks. */
- if ((NEW_ACE_WRITE_NAMED_ATTRS
- | NEW_ACE_WRITE_ATTRIBUTES
- | NEW_ACE_WRITE_ACL
- | NEW_ACE_WRITE_OWNER)
- & ~ access_masks[1])
- return 1;
- access_masks[1] &= ~(NEW_ACE_WRITE_NAMED_ATTRS
- | NEW_ACE_WRITE_ATTRIBUTES
- | NEW_ACE_WRITE_ACL
- | NEW_ACE_WRITE_OWNER);
- if ((NEW_ACE_READ_NAMED_ATTRS
- | NEW_ACE_READ_ATTRIBUTES
- | NEW_ACE_READ_ACL
- | NEW_ACE_SYNCHRONIZE)
- & ~ access_masks[5])
- return 1;
- access_masks[5] &= ~(NEW_ACE_READ_NAMED_ATTRS
- | NEW_ACE_READ_ATTRIBUTES
- | NEW_ACE_READ_ACL
- | NEW_ACE_SYNCHRONIZE);
-
- /* Check the allowed or denied bits. */
- switch ((access_masks[0] | access_masks[1])
- & ~(NEW_ACE_READ_NAMED_ATTRS
- | NEW_ACE_READ_ATTRIBUTES
- | NEW_ACE_READ_ACL
- | NEW_ACE_SYNCHRONIZE))
- {
- case 0:
- case NEW_ACE_READ_DATA:
- case NEW_ACE_WRITEA_DATA:
- case NEW_ACE_READ_DATA | NEW_ACE_WRITEA_DATA:
- case NEW_ACE_EXECUTE:
- case NEW_ACE_READ_DATA | NEW_ACE_EXECUTE:
- case NEW_ACE_WRITEA_DATA | NEW_ACE_EXECUTE:
- case NEW_ACE_READ_DATA | NEW_ACE_WRITEA_DATA | NEW_ACE_EXECUTE:
- break;
- default:
- return 1;
- }
- switch ((access_masks[2] | access_masks[3])
- & ~(NEW_ACE_READ_NAMED_ATTRS
- | NEW_ACE_READ_ATTRIBUTES
- | NEW_ACE_READ_ACL
- | NEW_ACE_SYNCHRONIZE))
- {
- case 0:
- case NEW_ACE_READ_DATA:
- case NEW_ACE_WRITEA_DATA:
- case NEW_ACE_READ_DATA | NEW_ACE_WRITEA_DATA:
- case NEW_ACE_EXECUTE:
- case NEW_ACE_READ_DATA | NEW_ACE_EXECUTE:
- case NEW_ACE_WRITEA_DATA | NEW_ACE_EXECUTE:
- case NEW_ACE_READ_DATA | NEW_ACE_WRITEA_DATA | NEW_ACE_EXECUTE:
- break;
- default:
- return 1;
- }
- switch ((access_masks[4] | access_masks[5])
- & ~(NEW_ACE_WRITE_NAMED_ATTRS
- | NEW_ACE_WRITE_ATTRIBUTES
- | NEW_ACE_WRITE_ACL
- | NEW_ACE_WRITE_OWNER))
- {
- case 0:
- case NEW_ACE_READ_DATA:
- case NEW_ACE_WRITEA_DATA:
- case NEW_ACE_READ_DATA | NEW_ACE_WRITEA_DATA:
- case NEW_ACE_EXECUTE:
- case NEW_ACE_READ_DATA | NEW_ACE_EXECUTE:
- case NEW_ACE_WRITEA_DATA | NEW_ACE_EXECUTE:
- case NEW_ACE_READ_DATA | NEW_ACE_WRITEA_DATA | NEW_ACE_EXECUTE:
- break;
- default:
- return 1;
}
- /* Check that the NEW_ACE_WRITE_DATA and NEW_ACE_APPEND_DATA bits are
- either both allowed or both denied. */
- if (((access_masks[0] & NEW_ACE_WRITE_DATA) != 0)
- != ((access_masks[0] & NEW_ACE_APPEND_DATA) != 0))
- return 1;
- if (((access_masks[2] & NEW_ACE_WRITE_DATA) != 0)
- != ((access_masks[2] & NEW_ACE_APPEND_DATA) != 0))
- return 1;
- if (((access_masks[4] & NEW_ACE_WRITE_DATA) != 0)
- != ((access_masks[4] & NEW_ACE_APPEND_DATA) != 0))
- return 1;
- }
-
- return 0;
-}
-
-# endif
-
-#elif USE_ACL && HAVE_GETACL /* HP-UX */
-
-/* Return 1 if the given ACL is non-trivial.
- Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
-int
-acl_nontrivial (int count, struct acl_entry *entries, struct stat *sb)
-{
- int i;
-
- for (i = 0; i < count; i++)
- {
- struct acl_entry *ace = &entries[i];
-
- if (!((ace->uid == sb->st_uid && ace->gid == ACL_NSGROUP)
- || (ace->uid == ACL_NSUSER && ace->gid == sb->st_gid)
- || (ace->uid == ACL_NSUSER && ace->gid == ACL_NSGROUP)))
- return 1;
- }
- return 0;
-}
-
-# if HAVE_ACLV_H /* HP-UX >= 11.11 */
-
-/* Return 1 if the given ACL is non-trivial.
- Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
-int
-aclv_nontrivial (int count, struct acl *entries)
-{
- int i;
-
- for (i = 0; i < count; i++)
- {
- struct acl *ace = &entries[i];
-
- /* Note: If ace->a_type = USER_OBJ, ace->a_id is the st_uid from stat().
- If ace->a_type = GROUP_OBJ, ace->a_id is the st_gid from stat().
- We don't need to check ace->a_id in these cases. */
- if (!(ace->a_type == USER_OBJ /* no need to check ace->a_id here */
- || ace->a_type == GROUP_OBJ /* no need to check ace->a_id here */
- || ace->a_type == CLASS_OBJ
- || ace->a_type == OTHER_OBJ))
- return 1;
- }
- return 0;
-}
-
-# endif
-
-#elif USE_ACL && (HAVE_ACLX_GET || HAVE_STATACL) /* AIX */
-
-/* Return 1 if the given ACL is non-trivial.
- Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
-int
-acl_nontrivial (struct acl *a)
-{
- /* The normal way to iterate through an ACL is like this:
- struct acl_entry *ace;
- for (ace = a->acl_ext; ace != acl_last (a); ace = acl_nxt (ace))
- {
- struct ace_id *aei;
- switch (ace->ace_type)
- {
- case ACC_PERMIT:
- case ACC_DENY:
- case ACC_SPECIFY:
- ...;
- }
- for (aei = ace->ace_id; aei != id_last (ace); aei = id_nxt (aei))
- ...
- }
- */
- return (acl_last (a) != a->acl_ext ? 1 : 0);
-}
-
-# if HAVE_ACLX_GET && defined ACL_AIX_WIP /* newer AIX */
-
-/* Return 1 if the given ACL is non-trivial.
- Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
-int
-acl_nfs4_nontrivial (nfs4_acl_int_t *a)
-{
-# if 1 /* let's try this first */
- return (a->aclEntryN > 0 ? 1 : 0);
-# else
- int count = a->aclEntryN;
- int i;
-
- for (i = 0; i < count; i++)
- {
- nfs4_ace_int_t *ace = &a->aclEntry[i];
-
- if (!((ace->flags & ACE4_ID_SPECIAL) != 0
- && (ace->aceWho.special_whoid == ACE4_WHO_OWNER
- || ace->aceWho.special_whoid == ACE4_WHO_GROUP
- || ace->aceWho.special_whoid == ACE4_WHO_EVERYONE)
- && ace->aceType == ACE4_ACCESS_ALLOWED_ACE_TYPE
- && ace->aceFlags == 0
- && (ace->aceMask & ~(ACE4_READ_DATA | ACE4_LIST_DIRECTORY
- | ACE4_WRITE_DATA | ACE4_ADD_FILE
- | ACE4_EXECUTE)) == 0))
- return 1;
- }
- return 0;
-# endif
-}
-
-# endif
-
-#elif USE_ACL && HAVE_ACLSORT /* NonStop Kernel */
-
-/* Test an ACL retrieved with ACL_GET.
- Return 1 if the given ACL, consisting of COUNT entries, is non-trivial.
- Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
-int
-acl_nontrivial (int count, struct acl *entries)
-{
- int i;
-
- for (i = 0; i < count; i++)
- {
- struct acl *ace = &entries[i];
-
- /* Note: If ace->a_type = USER_OBJ, ace->a_id is the st_uid from stat().
- If ace->a_type = GROUP_OBJ, ace->a_id is the st_gid from stat().
- We don't need to check ace->a_id in these cases. */
- if (!(ace->a_type == USER_OBJ /* no need to check ace->a_id here */
- || ace->a_type == GROUP_OBJ /* no need to check ace->a_id here */
- || ace->a_type == CLASS_OBJ
- || ace->a_type == OTHER_OBJ))
- return 1;
- }
- return 0;
-}
-
-#endif
-
-
-/* Return 1 if NAME has a nontrivial access control list, 0 if NAME
- only has no or a base access control list, and -1 (setting errno)
- on error. SB must be set to the stat buffer of NAME, obtained
- through stat() or lstat(). */
+ if (ret < 0)
+ return - acl_errno_valid (errno);
+ return ret;
-int
-file_has_acl (char const *name, struct stat const *sb)
-{
-#if USE_ACL
- if (! S_ISLNK (sb->st_mode))
- {
-# if HAVE_ACL_GET_FILE
+# elif HAVE_ACL_GET_FILE
/* POSIX 1003.1e (draft 17 -- abandoned) specific version. */
/* Linux, FreeBSD, Mac OS X, IRIX, Tru64 */
if (stat (name, &statbuf) < 0)
return -1;
- return acl_nontrivial (count, entries, &statbuf);
+ return acl_nontrivial (count, entries);
}
}
}
union { struct acl a; char room[4096]; } u;
- if (statacl (name, STX_NORMAL, &u.a, sizeof (u)) < 0)
+ if (statacl ((char *) name, STX_NORMAL, &u.a, sizeof (u)) < 0)
return -1;
return acl_nontrivial (&u.a);
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