lib/acl-internal.h - toolchain/sed - Git at Google

 /* Internal implementation of access control lists.

    Copyright (C) 2002-2003, 2005-2012 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 <http://www.gnu.org/licenses/>.

    Written by Paul Eggert, Andreas Grünbacher, and Bruno Haible.  */

 #include "acl.h"

 #include <stdbool.h>
 #include <stdlib.h>

 /* All systems define the ACL related API in <sys/acl.h>.  */
 #if HAVE_SYS_ACL_H
 # include <sys/acl.h>
 #endif
 #if defined HAVE_FACL && ! defined GETACLCNT && defined ACL_CNT
 # define GETACLCNT ACL_CNT
 #endif

 /* On Linux, additional ACL related API is available in <acl/libacl.h>.  */
 #ifdef HAVE_ACL_LIBACL_H
 # include <acl/libacl.h>
 #endif

 /* On HP-UX >= 11.11, additional ACL API is available in <aclv.h>.  */
 #if HAVE_ACLV_H
 # include <sys/types.h>
 # include <aclv.h>
 /* HP-UX 11.11 lacks these declarations.  */
 extern int acl (char *, int, int, struct acl *);
 extern int aclsort (int, int, struct acl *);
 #endif

 #include "error.h"
 #include "quote.h"

 #include <errno.h>
 #ifndef ENOSYS
 # define ENOSYS (-1)
 #endif
 #ifndef ENOTSUP
 # define ENOTSUP (-1)
 #endif

 #include <limits.h>
 #ifndef MIN
 # define MIN(a,b) ((a) < (b) ? (a) : (b))
 #endif

 #ifndef SIZE_MAX
 # define SIZE_MAX ((size_t) -1)
 #endif

 #ifndef HAVE_FCHMOD
 # define HAVE_FCHMOD false
 # define fchmod(fd, mode) (-1)
 #endif

 /* Recognize some common errors such as from an NFS mount that does
    not support ACLs, even when local drives do.  */
 #if defined __APPLE__ && defined __MACH__ /* Mac OS X */
 # define ACL_NOT_WELL_SUPPORTED(Err) \
      ((Err) == ENOTSUP || (Err) == ENOSYS || (Err) == EINVAL || (Err) == EBUSY || (Err) == ENOENT)
 #elif defined EOPNOTSUPP /* Tru64 NFS */
 # define ACL_NOT_WELL_SUPPORTED(Err) \
      ((Err) == ENOTSUP || (Err) == ENOSYS || (Err) == EINVAL || (Err) == EBUSY || (Err) == EOPNOTSUPP)
 #else
 # define ACL_NOT_WELL_SUPPORTED(Err) \
      ((Err) == ENOTSUP || (Err) == ENOSYS || (Err) == EINVAL || (Err) == EBUSY)
 #endif

 _GL_INLINE_HEADER_BEGIN
 #ifndef ACL_INTERNAL_INLINE
 # define ACL_INTERNAL_INLINE _GL_INLINE
 #endif

 #if USE_ACL

 # if HAVE_ACL_GET_FILE
 /* POSIX 1003.1e (draft 17 -- abandoned) specific version.  */
 /* Linux, FreeBSD, Mac OS X, IRIX, Tru64 */

 #  ifndef MIN_ACL_ENTRIES
 #   define MIN_ACL_ENTRIES 4
 #  endif

 /* POSIX 1003.1e (draft 17) */
 #  ifdef HAVE_ACL_GET_FD
 /* Most platforms have a 1-argument acl_get_fd, only OSF/1 has a 2-argument
    macro(!).  */
 #   if HAVE_ACL_FREE_TEXT /* OSF/1 */
 ACL_INTERNAL_INLINE acl_t
 rpl_acl_get_fd (int fd)
 {
   return acl_get_fd (fd, ACL_TYPE_ACCESS);
 }
 #    undef acl_get_fd
 #    define acl_get_fd rpl_acl_get_fd
 #   endif
 #  else
 #   define HAVE_ACL_GET_FD false
 #   undef acl_get_fd
 #   define acl_get_fd(fd) (NULL)
 #  endif

 /* POSIX 1003.1e (draft 17) */
 #  ifdef HAVE_ACL_SET_FD
 /* Most platforms have a 2-argument acl_set_fd, only OSF/1 has a 3-argument
    macro(!).  */
 #   if HAVE_ACL_FREE_TEXT /* OSF/1 */
 ACL_INTERNAL_INLINE int
 rpl_acl_set_fd (int fd, acl_t acl)
 {
   return acl_set_fd (fd, ACL_TYPE_ACCESS, acl);
 }
 #    undef acl_set_fd
 #    define acl_set_fd rpl_acl_set_fd
 #   endif
 #  else
 #   define HAVE_ACL_SET_FD false
 #   undef acl_set_fd
 #   define acl_set_fd(fd, acl) (-1)
 #  endif

 /* POSIX 1003.1e (draft 13) */
 #  if ! HAVE_ACL_FREE_TEXT
 #   define acl_free_text(buf) acl_free (buf)
 #  endif

 /* Linux-specific */
 #  ifndef HAVE_ACL_EXTENDED_FILE
 #   define HAVE_ACL_EXTENDED_FILE false
 #   define acl_extended_file(name) (-1)
 #  endif

 /* Linux-specific */
 #  ifndef HAVE_ACL_FROM_MODE
 #   define HAVE_ACL_FROM_MODE false
 #   define acl_from_mode(mode) (NULL)
 #  endif

 /* Set to 1 if a file's mode is implicit by the ACL.
    Set to 0 if a file's mode is stored independently from the ACL.  */
 #  if (HAVE_ACL_COPY_EXT_NATIVE && HAVE_ACL_CREATE_ENTRY_NP) || defined __sgi /* Mac OS X, IRIX */
 #   define MODE_INSIDE_ACL 0
 #  else
 #   define MODE_INSIDE_ACL 1
 #  endif

 /* Return the number of entries in ACL.
    Return -1 and set errno upon failure to determine it.  */
 /* Define a replacement for acl_entries if needed. (Only Linux has it.)  */
 #  if !HAVE_ACL_ENTRIES
 #   define acl_entries rpl_acl_entries
 extern int acl_entries (acl_t);
 #  endif

 #  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.  */
 extern int acl_extended_nontrivial (acl_t);
 #  else
 /* 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.  */
 extern int acl_access_nontrivial (acl_t);
 #  endif

 # elif HAVE_FACL && defined GETACL /* Solaris, Cygwin, not HP-UX */

 /* Set to 1 if a file's mode is implicit by the ACL.
    Set to 0 if a file's mode is stored independently from the ACL.  */
 #  if defined __CYGWIN__ /* Cygwin */
 #   define MODE_INSIDE_ACL 0
 #  else /* Solaris */
 #   define MODE_INSIDE_ACL 1
 #  endif

 /* Return 1 if the given ACL is non-trivial.
    Return 0 if it is trivial, i.e. equivalent to a simple stat() mode.  */
 extern int acl_nontrivial (int count, aclent_t *entries);

 #  ifdef ACE_GETACL /* Solaris 10 */

 /* 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.  */
 extern int acl_ace_nontrivial (int count, ace_t *entries);

 /* Definitions for when the built executable is executed on Solaris 10
    (newer version) or Solaris 11.  */
 /* For a_type.  */
 #   define OLD_ALLOW 0
 #   define OLD_DENY  1
 #   define NEW_ACE_ACCESS_ALLOWED_ACE_TYPE 0 /* replaces ALLOW */
 #   define NEW_ACE_ACCESS_DENIED_ACE_TYPE  1 /* replaces DENY */
 /* For a_flags.  */
 #   define OLD_ACE_OWNER            0x0100
 #   define OLD_ACE_GROUP            0x0200
 #   define OLD_ACE_OTHER            0x0400
 #   define NEW_ACE_OWNER            0x1000
 #   define NEW_ACE_GROUP            0x2000
 #   define NEW_ACE_IDENTIFIER_GROUP 0x0040
 #   define NEW_ACE_EVERYONE         0x4000
 /* For a_access_mask.  */
 #   define NEW_ACE_READ_DATA         0x001 /* corresponds to 'r' */
 #   define NEW_ACE_WRITE_DATA        0x002 /* corresponds to 'w' */
 #   define NEW_ACE_APPEND_DATA       0x004
 #   define NEW_ACE_READ_NAMED_ATTRS  0x008
 #   define NEW_ACE_WRITE_NAMED_ATTRS 0x010
 #   define NEW_ACE_EXECUTE           0x020
 #   define NEW_ACE_DELETE_CHILD      0x040
 #   define NEW_ACE_READ_ATTRIBUTES   0x080
 #   define NEW_ACE_WRITE_ATTRIBUTES  0x100
 #   define NEW_ACE_DELETE          0x10000
 #   define NEW_ACE_READ_ACL        0x20000
 #   define NEW_ACE_WRITE_ACL       0x40000
 #   define NEW_ACE_WRITE_OWNER     0x80000
 #   define NEW_ACE_SYNCHRONIZE    0x100000

 #  endif

 # elif 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.  */
 extern int acl_nontrivial (int count, struct acl_entry *entries, struct stat *sb);

 #  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.  */
 extern int aclv_nontrivial (int count, struct acl *entries);

 #  endif

 # elif HAVE_ACLX_GET && 0 /* AIX */

 /* TODO */

 # elif HAVE_STATACL /* older AIX */

 /* Return 1 if the given ACL is non-trivial.
    Return 0 if it is trivial, i.e. equivalent to a simple stat() mode.  */
 extern int acl_nontrivial (struct acl *a);

 # elif HAVE_ACLSORT /* NonStop Kernel */

 /* Return 1 if the given ACL is non-trivial.
    Return 0 if it is trivial, i.e. equivalent to a simple stat() mode.  */
 extern int acl_nontrivial (int count, struct acl *entries);

 # endif

 #endif

 _GL_INLINE_HEADER_END
	/* Internal implementation of access control lists.

	Copyright (C) 2002-2003, 2005-2012 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 <http://www.gnu.org/licenses/>.

	Written by Paul Eggert, Andreas Grünbacher, and Bruno Haible. */

	#include "acl.h"

	#include <stdbool.h>
	#include <stdlib.h>

	/* All systems define the ACL related API in <sys/acl.h>. */
	#if HAVE_SYS_ACL_H
	# include <sys/acl.h>
	#endif
	#if defined HAVE_FACL && ! defined GETACLCNT && defined ACL_CNT
	# define GETACLCNT ACL_CNT
	#endif

	/* On Linux, additional ACL related API is available in <acl/libacl.h>. */
	#ifdef HAVE_ACL_LIBACL_H
	# include <acl/libacl.h>
	#endif

	/* On HP-UX >= 11.11, additional ACL API is available in <aclv.h>. */
	#if HAVE_ACLV_H
	# include <sys/types.h>
	# include <aclv.h>
	/* HP-UX 11.11 lacks these declarations. */
	extern int acl (char , int, int, struct acl );
	extern int aclsort (int, int, struct acl *);
	#endif

	#include "error.h"
	#include "quote.h"

	#include <errno.h>
	#ifndef ENOSYS
	# define ENOSYS (-1)
	#endif
	#ifndef ENOTSUP
	# define ENOTSUP (-1)
	#endif

	#include <limits.h>
	#ifndef MIN
	# define MIN(a,b) ((a) < (b) ? (a) : (b))
	#endif

	#ifndef SIZE_MAX
	# define SIZE_MAX ((size_t) -1)
	#endif

	#ifndef HAVE_FCHMOD
	# define HAVE_FCHMOD false
	# define fchmod(fd, mode) (-1)
	#endif

	/* Recognize some common errors such as from an NFS mount that does
	not support ACLs, even when local drives do. */
	#if defined __APPLE__ && defined __MACH__ /* Mac OS X */
	# define ACL_NOT_WELL_SUPPORTED(Err) \
	((Err) == ENOTSUP \|\| (Err) == ENOSYS \|\| (Err) == EINVAL \|\| (Err) == EBUSY \|\| (Err) == ENOENT)
	#elif defined EOPNOTSUPP /* Tru64 NFS */
	# define ACL_NOT_WELL_SUPPORTED(Err) \
	((Err) == ENOTSUP \|\| (Err) == ENOSYS \|\| (Err) == EINVAL \|\| (Err) == EBUSY \|\| (Err) == EOPNOTSUPP)
	#else
	# define ACL_NOT_WELL_SUPPORTED(Err) \
	((Err) == ENOTSUP \|\| (Err) == ENOSYS \|\| (Err) == EINVAL \|\| (Err) == EBUSY)
	#endif

	_GL_INLINE_HEADER_BEGIN
	#ifndef ACL_INTERNAL_INLINE
	# define ACL_INTERNAL_INLINE _GL_INLINE
	#endif

	#if USE_ACL

	# if HAVE_ACL_GET_FILE
	/* POSIX 1003.1e (draft 17 -- abandoned) specific version. */
	/* Linux, FreeBSD, Mac OS X, IRIX, Tru64 */

	# ifndef MIN_ACL_ENTRIES
	# define MIN_ACL_ENTRIES 4
	# endif

	/* POSIX 1003.1e (draft 17) */
	# ifdef HAVE_ACL_GET_FD
	/* Most platforms have a 1-argument acl_get_fd, only OSF/1 has a 2-argument
	macro(!). */
	# if HAVE_ACL_FREE_TEXT /* OSF/1 */
	ACL_INTERNAL_INLINE acl_t
	rpl_acl_get_fd (int fd)
	{
	return acl_get_fd (fd, ACL_TYPE_ACCESS);
	}
	# undef acl_get_fd
	# define acl_get_fd rpl_acl_get_fd
	# endif
	# else
	# define HAVE_ACL_GET_FD false
	# undef acl_get_fd
	# define acl_get_fd(fd) (NULL)
	# endif

	/* POSIX 1003.1e (draft 17) */
	# ifdef HAVE_ACL_SET_FD
	/* Most platforms have a 2-argument acl_set_fd, only OSF/1 has a 3-argument
	macro(!). */
	# if HAVE_ACL_FREE_TEXT /* OSF/1 */
	ACL_INTERNAL_INLINE int
	rpl_acl_set_fd (int fd, acl_t acl)
	{
	return acl_set_fd (fd, ACL_TYPE_ACCESS, acl);
	}
	# undef acl_set_fd
	# define acl_set_fd rpl_acl_set_fd
	# endif
	# else
	# define HAVE_ACL_SET_FD false
	# undef acl_set_fd
	# define acl_set_fd(fd, acl) (-1)
	# endif

	/* POSIX 1003.1e (draft 13) */
	# if ! HAVE_ACL_FREE_TEXT
	# define acl_free_text(buf) acl_free (buf)
	# endif

	/* Linux-specific */
	# ifndef HAVE_ACL_EXTENDED_FILE
	# define HAVE_ACL_EXTENDED_FILE false
	# define acl_extended_file(name) (-1)
	# endif

	/* Linux-specific */
	# ifndef HAVE_ACL_FROM_MODE
	# define HAVE_ACL_FROM_MODE false
	# define acl_from_mode(mode) (NULL)
	# endif

	/* Set to 1 if a file's mode is implicit by the ACL.
	Set to 0 if a file's mode is stored independently from the ACL. */
	# if (HAVE_ACL_COPY_EXT_NATIVE && HAVE_ACL_CREATE_ENTRY_NP) \|\| defined __sgi /* Mac OS X, IRIX */
	# define MODE_INSIDE_ACL 0
	# else
	# define MODE_INSIDE_ACL 1
	# endif

	/* Return the number of entries in ACL.
	Return -1 and set errno upon failure to determine it. */
	/* Define a replacement for acl_entries if needed. (Only Linux has it.) */
	# if !HAVE_ACL_ENTRIES
	# define acl_entries rpl_acl_entries
	extern int acl_entries (acl_t);
	# endif

	# 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. */
	extern int acl_extended_nontrivial (acl_t);
	# else
	/* 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. */
	extern int acl_access_nontrivial (acl_t);
	# endif

	# elif HAVE_FACL && defined GETACL /* Solaris, Cygwin, not HP-UX */

	/* Set to 1 if a file's mode is implicit by the ACL.
	Set to 0 if a file's mode is stored independently from the ACL. */
	# if defined __CYGWIN__ /* Cygwin */
	# define MODE_INSIDE_ACL 0
	# else /* Solaris */
	# define MODE_INSIDE_ACL 1
	# endif

	/* Return 1 if the given ACL is non-trivial.
	Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
	extern int acl_nontrivial (int count, aclent_t *entries);

	# ifdef ACE_GETACL /* Solaris 10 */

	/* 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. */
	extern int acl_ace_nontrivial (int count, ace_t *entries);

	/* Definitions for when the built executable is executed on Solaris 10
	(newer version) or Solaris 11. */
	/* For a_type. */
	# define OLD_ALLOW 0
	# define OLD_DENY 1
	# define NEW_ACE_ACCESS_ALLOWED_ACE_TYPE 0 /* replaces ALLOW */
	# define NEW_ACE_ACCESS_DENIED_ACE_TYPE 1 /* replaces DENY */
	/* For a_flags. */
	# define OLD_ACE_OWNER 0x0100
	# define OLD_ACE_GROUP 0x0200
	# define OLD_ACE_OTHER 0x0400
	# define NEW_ACE_OWNER 0x1000
	# define NEW_ACE_GROUP 0x2000
	# define NEW_ACE_IDENTIFIER_GROUP 0x0040
	# define NEW_ACE_EVERYONE 0x4000
	/* For a_access_mask. */
	# define NEW_ACE_READ_DATA 0x001 /* corresponds to 'r' */
	# define NEW_ACE_WRITE_DATA 0x002 /* corresponds to 'w' */
	# define NEW_ACE_APPEND_DATA 0x004
	# define NEW_ACE_READ_NAMED_ATTRS 0x008
	# define NEW_ACE_WRITE_NAMED_ATTRS 0x010
	# define NEW_ACE_EXECUTE 0x020
	# define NEW_ACE_DELETE_CHILD 0x040
	# define NEW_ACE_READ_ATTRIBUTES 0x080
	# define NEW_ACE_WRITE_ATTRIBUTES 0x100
	# define NEW_ACE_DELETE 0x10000
	# define NEW_ACE_READ_ACL 0x20000
	# define NEW_ACE_WRITE_ACL 0x40000
	# define NEW_ACE_WRITE_OWNER 0x80000
	# define NEW_ACE_SYNCHRONIZE 0x100000

	# endif

	# elif 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. */
	extern int acl_nontrivial (int count, struct acl_entry entries, struct stat sb);

	# 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. */
	extern int aclv_nontrivial (int count, struct acl *entries);

	# endif

	# elif HAVE_ACLX_GET && 0 /* AIX */

	/* TODO */

	# elif HAVE_STATACL /* older AIX */

	/* Return 1 if the given ACL is non-trivial.
	Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
	extern int acl_nontrivial (struct acl *a);

	# elif HAVE_ACLSORT /* NonStop Kernel */

	/* Return 1 if the given ACL is non-trivial.
	Return 0 if it is trivial, i.e. equivalent to a simple stat() mode. */
	extern int acl_nontrivial (int count, struct acl *entries);

	# endif

	#endif

	_GL_INLINE_HEADER_END