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Update from Gnulib by running admin/merge-gnulib

Browse source 
* lib/endian.c, lib/endian.in.h, m4/endian_h.m4, m4/sys_cdefs_h.m4:
New files, copied from Gnulib.
This commit is contained in:
Paul Eggert 2024-06-03 21:57:53 -07:00
parent ce660c5c30
commit 799f78a92c
27 changed files with 918 additions and 119 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

60
lib/acl-internal.c
View file

@ -23,6 +23,12 @@
#include "acl-internal.h"
#if defined __CYGWIN__
# include <sys/types.h>
# include <grp.h>
# include <string.h>
#endif
#if USE_ACL && HAVE_ACL_GET_FILE /* Linux, FreeBSD, Mac OS X, IRIX, Tru64, Cygwin >= 2.5 */
# if HAVE_ACL_TYPE_EXTENDED /* Mac OS X */
@ -63,8 +69,58 @@ acl_access_nontrivial (acl_t acl)
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;
switch (tag)
{
case ACL_USER_OBJ:
case ACL_GROUP_OBJ:
case ACL_OTHER:
break;
# ifdef __CYGWIN__
/* On Cygwin, a trivial ACL inside the Cygwin file system consists of
e.g.
user::rwx
group::r-x
other::r-x
but a trivial ACL outside the Cygwin file system has more entries:
e.g.
user::rwx
group::r-x
group:SYSTEM:rwx
group:Administrators:rwx
mask::r-x
other::r-x
*/
case ACL_GROUP:
{
int ignorable = 0;
void *qualifier = acl_get_qualifier (ace);
if (qualifier != NULL)
{
gid_t group_id = *(gid_t const *) qualifier;
acl_free (qualifier);
struct group *group_details = getgrgid (group_id);
if (group_details != NULL)
{
const char *group_sid = group_details->gr_passwd;
/* Ignore the ace if the group_sid is one of
- S-1-5-18 (group "SYSTEM")
- S-1-5-32-544 (group "Administrators")
Cf. <https://learn.microsoft.com/en-us/windows/win32/secauthz/well-known-sids> */
ignorable = (strcmp (group_sid, "S-1-5-18") == 0
|| strcmp (group_sid, "S-1-5-32-544") == 0);
}
}
if (!ignorable)
return 1;
}
break;
case ACL_MASK:
/* XXX Is it OK to ignore acl_get_permset (ace, ...) ? */
break;
# endif
default:
return 1;
}
}
return got_one;

68
lib/attribute.h
View file

@ -49,8 +49,9 @@
_GL_ATTRIBUTE_MALLOC, _GL_ATTRIBUTE_MAY_ALIAS, _GL_ATTRIBUTE_MAYBE_UNUSED,
_GL_ATTRIBUTE_NODISCARD, _GL_ATTRIBUTE_NOINLINE, _GL_ATTRIBUTE_NONNULL,
_GL_ATTRIBUTE_NONSTRING, _GL_ATTRIBUTE_NOTHROW, _GL_ATTRIBUTE_PACKED,
_GL_ATTRIBUTE_PURE, _GL_ATTRIBUTE_RETURNS_NONNULL,
_GL_ATTRIBUTE_SENTINEL. */
_GL_ATTRIBUTE_PURE, _GL_ATTRIBUTE_REPRODUCIBLE,
_GL_ATTRIBUTE_RETURNS_NONNULL, _GL_ATTRIBUTE_SENTINEL,
_GL_ATTRIBUTE_UNSEQUENCED. */
#if !_GL_CONFIG_H_INCLUDED
#error "Please include config.h first."
#endif
@ -88,7 +89,7 @@
is the size of the returned memory block.
ATTRIBUTE_ALLOC_SIZE ((M, N)) - Multiply the Mth and Nth arguments
to determine the size of the returned memory block. */
/* Applies to: function, pointer to function, function types. */
/* Applies to: functions, pointer to functions, function types. */
#define ATTRIBUTE_ALLOC_SIZE(args) _GL_ATTRIBUTE_ALLOC_SIZE (args)
/* ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers
@ -170,7 +171,7 @@
/* Attributes regarding debugging information emitted by the compiler. */
/* Omit the function from stack traces when debugging. */
/* Applies to: function. */
/* Applies to: functions. */
#define ATTRIBUTE_ARTIFICIAL _GL_ATTRIBUTE_ARTIFICIAL
/* Make the entity visible to debuggers etc., even with '-fwhole-program'. */
@ -192,25 +193,64 @@
/* Always inline the function, and report an error if the compiler
cannot inline. */
/* Applies to: function. */
/* Applies to: functions. */
#define ATTRIBUTE_ALWAYS_INLINE _GL_ATTRIBUTE_ALWAYS_INLINE
/* It is OK for a compiler to omit duplicate calls with the same arguments.
/* It is OK for a compiler to move calls to the function and to omit
calls to the function if another call has the same arguments or the
result is not used.
This attribute is safe for a function that neither depends on
nor affects observable state, and always returns exactly once -
e.g., does not loop forever, and does not call longjmp.
(This attribute is stricter than ATTRIBUTE_PURE.) */
nor affects state, and always returns exactly once -
e.g., does not raise an exception, call longjmp, or loop forever.
(This attribute is stricter than ATTRIBUTE_PURE because the
function cannot observe state. It is stricter than UNSEQUENCED
because the function must return exactly once and cannot depend on
state addressed by its arguments.) */
/* Applies to: functions. */
#define ATTRIBUTE_CONST _GL_ATTRIBUTE_CONST
/* It is OK for a compiler to omit duplicate calls with the same
arguments if observable state is not changed between calls.
This attribute is safe for a function that does not affect
observable state, and always returns exactly once.
(This attribute is looser than ATTRIBUTE_CONST.) */
/* It is OK for a compiler to move calls to the function and to omit duplicate
calls to the function with the same arguments, so long as the state
addressed by its arguments is the same.
This attribute is safe for a function that is effectless, idempotent,
stateless, and independent; see ISO C 23 § 6.7.12.7 for a definition of
these terms.
(This attribute is stricter than REPRODUCIBLE because the function
must be stateless and independent. It is looser than ATTRIBUTE_CONST
because the function need not return exactly once and can depend
on state addressed by its arguments.)
See also <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2956.htm> and
<https://stackoverflow.com/questions/76847905/>. */
/* Applies to: functions, pointer to functions, function type. */
#define UNSEQUENCED _GL_ATTRIBUTE_UNSEQUENCED
/* It is OK for a compiler to move calls to the function and to omit
calls to the function if another call has the same arguments or the
result is not used, and if observable state is the same.
This attribute is safe for a function that does not affect observable state
and always returns exactly once.
(This attribute is looser than ATTRIBUTE_CONST because the function
can depend on observable state. It is stricter than REPRODUCIBLE
because the function must return exactly once and cannot affect
state addressed by its arguments.) */
/* Applies to: functions. */
#define ATTRIBUTE_PURE _GL_ATTRIBUTE_PURE
/* It is OK for a compiler to move calls to the function and to omit duplicate
calls to the function with the same arguments, so long as the state
addressed by its arguments is the same and is updated in time for
the rest of the program.
This attribute is safe for a function that is effectless and idempotent; see
ISO C 23 § 6.7.12.7 for a definition of these terms.
(This attribute is looser than UNSEQUENCED because the function need
not be stateless and idempotent. It is looser than ATTRIBUTE_PURE
because the function need not return exactly once and can affect
state addressed by its arguments.)
See also <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2956.htm> and
<https://stackoverflow.com/questions/76847905/>. */
/* Applies to: functions, pointer to functions, function type. */
#define REPRODUCIBLE _GL_ATTRIBUTE_REPRODUCIBLE
/* The function is rarely executed. */
/* Applies to: functions. */
#define ATTRIBUTE_COLD _GL_ATTRIBUTE_COLD

86
lib/boot-time-aux.h
View file

@ -108,8 +108,16 @@ get_linux_boot_time_fallback (struct timespec *p_boot_time)
struct stat statbuf;
if (stat (filename, &statbuf) >= 0)
{
*p_boot_time = get_stat_mtime (&statbuf);
return 0;
struct timespec boot_time = get_stat_mtime (&statbuf);
/* On Alpine 3.20.0_rc2 /var/run/utmp was observed with bogus
timestamps of ~10 s. Reject timestamps before
2005-07-25 23:34:15 UTC (1122334455), as neither Alpine
nor Devuan existed then. */
if (boot_time.tv_sec >= 1122334455)
{
*p_boot_time = boot_time;
return 0;
}
}
}
return -1;
@ -337,4 +345,78 @@ get_windows_boot_time (struct timespec *p_boot_time)
return -1;
}
# ifndef __CYGWIN__
# if !(_WIN32_WINNT >= _WIN32_WINNT_VISTA)
/* Don't assume that UNICODE is not defined. */
# undef LoadLibrary
# define LoadLibrary LoadLibraryA
/* Avoid warnings from gcc -Wcast-function-type. */
# define GetProcAddress \
(void *) GetProcAddress
/* GetTickCount64 is only available on Windows Vista and later. */
typedef ULONGLONG (WINAPI * GetTickCount64FuncType) (void);
static GetTickCount64FuncType GetTickCount64Func = NULL;
static BOOL initialized = FALSE;
static void
initialize (void)
{
HMODULE kernel32 = LoadLibrary ("kernel32.dll");
if (kernel32 != NULL)
{
GetTickCount64Func =
(GetTickCount64FuncType) GetProcAddress (kernel32, "GetTickCount64");
}
initialized = TRUE;
}
# else
# define GetTickCount64Func GetTickCount64
# endif
/* Fallback for Windows in the form:
boot time = current time - uptime
This uses the GetTickCount64 function which is only available on Windows
Vista and later. See:
<https://learn.microsoft.com/en-us/windows/win32/api/sysinfoapi/nf-sysinfoapi-gettickcount64>. */
static int
get_windows_boot_time_fallback (struct timespec *p_boot_time)
{
# if !(_WIN32_WINNT >= _WIN32_WINNT_VISTA)
if (! initialized)
initialize ();
# endif
if (GetTickCount64Func != NULL)
{
ULONGLONG uptime_ms = GetTickCount64Func ();
struct timespec uptime;
struct timespec result;
struct timeval tv;
if (gettimeofday (&tv, NULL) >= 0)
{
uptime.tv_sec = uptime_ms / 1000;
uptime.tv_nsec = (uptime_ms % 1000) * 1000000;
result.tv_sec = tv.tv_sec;
result.tv_nsec = tv.tv_usec * 1000;
if (result.tv_nsec < uptime.tv_nsec)
{
result.tv_nsec += 1000000000;
result.tv_sec -= 1;
}
result.tv_sec -= uptime.tv_sec;
result.tv_nsec -= uptime.tv_nsec;
*p_boot_time = result;
return 0;
}
}
return -1;
}
# endif
#endif

11
lib/boot-time.c
View file

@ -43,6 +43,13 @@
# include <OS.h>
#endif
#if defined _WIN32 && ! defined __CYGWIN__
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# include <sysinfoapi.h>
# include <sys/time.h>
#endif
#include "idx.h"
#include "readutmp.h"
#include "stat-time.h"
@ -247,6 +254,10 @@ get_boot_time_uncached (struct timespec *p_boot_time)
{
/* Workaround for Windows: */
get_windows_boot_time (&found_boot_time);
# ifndef __CYGWIN__
if (found_boot_time.tv_sec == 0)
get_windows_boot_time_fallback (&found_boot_time);
# endif
}
# endif

23
lib/endian.c Normal file
View file

@ -0,0 +1,23 @@
/* Inline functions for <endian.h>.
Copyright 2024 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Collin Funk. */
#include <config.h>
#define _GL_ENDIAN_INLINE _GL_EXTERN_INLINE
#include <endian.h>

236
lib/endian.in.h Normal file
View file

@ -0,0 +1,236 @@
/* endian.h - Byte order macros
Copyright 2024 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Collin Funk. */
#ifndef _@GUARD_PREFIX@_ENDIAN_H
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@
#if @HAVE_ENDIAN_H@
/* The include_next requires a split double-inclusion guard. */
# @INCLUDE_NEXT@ @NEXT_ENDIAN_H@
#endif
/* glibc defines all macros and functions but is missing types from
stdint.h. */
#if @ENDIAN_H_JUST_MISSING_STDINT@
# include <stdint.h>
#else
/* Others platforms. */
#ifndef _@GUARD_PREFIX@_ENDIAN_H
#define _@GUARD_PREFIX@_ENDIAN_H 1
/* This file uses _GL_INLINE, WORDS_BIGENDIAN. */
#if !_GL_CONFIG_H_INCLUDED
#error "Please include config.h first."
#endif
/* Define uint16_t and uint32_t.
Define uint64_t if it is available. */
#include <stdint.h>
/* Byteswap functions. */
#include <byteswap.h>
_GL_INLINE_HEADER_BEGIN
#ifndef _GL_ENDIAN_INLINE
# define _GL_ENDIAN_INLINE _GL_INLINE
#endif
#define LITTLE_ENDIAN 1234
#define BIG_ENDIAN 4321
#define PDP_ENDIAN 3412
#ifdef WORDS_BIGENDIAN
# define BYTE_ORDER BIG_ENDIAN
#else
# define BYTE_ORDER LITTLE_ENDIAN
#endif
/* Make sure function-like macros get undefined. */
#if @HAVE_ENDIAN_H@
# undef be16toh
# undef be32toh
# undef be64toh
# undef htobe16
# undef htobe32
# undef htobe64
# undef le16toh
# undef le32toh
# undef le64toh
# undef htole16
# undef htole32
# undef htole64
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* Big endian to host. */
_GL_ENDIAN_INLINE uint16_t
be16toh (uint16_t x)
{
#if BYTE_ORDER == BIG_ENDIAN
return x;
#else
return bswap_16 (x);
#endif
}
_GL_ENDIAN_INLINE uint32_t
be32toh (uint32_t x)
{
#if BYTE_ORDER == BIG_ENDIAN
return x;
#else
return bswap_32 (x);
#endif
}
#ifdef UINT64_MAX
_GL_ENDIAN_INLINE uint64_t
be64toh (uint64_t x)
{
# if BYTE_ORDER == BIG_ENDIAN
return x;
# else
return bswap_64 (x);
# endif
}
#endif
/* Host to big endian. */
_GL_ENDIAN_INLINE uint16_t
htobe16 (uint16_t x)
{
#if BYTE_ORDER == BIG_ENDIAN
return x;
#else
return bswap_16 (x);
#endif
}
_GL_ENDIAN_INLINE uint32_t
htobe32 (uint32_t x)
{
#if BYTE_ORDER == BIG_ENDIAN
return x;
#else
return bswap_32 (x);
#endif
}
#ifdef UINT64_MAX
_GL_ENDIAN_INLINE uint64_t
htobe64 (uint64_t x)
{
# if BYTE_ORDER == BIG_ENDIAN
return x;
# else
return bswap_64 (x);
# endif
}
#endif
/* Little endian to host. */
_GL_ENDIAN_INLINE uint16_t
le16toh (uint16_t x)
{
#if BYTE_ORDER == BIG_ENDIAN
return bswap_16 (x);
#else
return x;
#endif
}
_GL_ENDIAN_INLINE uint32_t
le32toh (uint32_t x)
{
#if BYTE_ORDER == BIG_ENDIAN
return bswap_32 (x);
#else
return x;
#endif
}
#ifdef UINT64_MAX
_GL_ENDIAN_INLINE uint64_t
le64toh (uint64_t x)
{
# if BYTE_ORDER == BIG_ENDIAN
return bswap_64 (x);
# else
return x;
# endif
}
#endif
/* Host to little endian. */
_GL_ENDIAN_INLINE uint16_t
htole16 (uint16_t x)
{
#if BYTE_ORDER == BIG_ENDIAN
return bswap_16 (x);
#else
return x;
#endif
}
_GL_ENDIAN_INLINE uint32_t
htole32 (uint32_t x)
{
#if BYTE_ORDER == BIG_ENDIAN
return bswap_32 (x);
#else
return x;
#endif
}
#ifdef UINT64_MAX
_GL_ENDIAN_INLINE uint64_t
htole64 (uint64_t x)
{
# if BYTE_ORDER == BIG_ENDIAN
return bswap_64 (x);
# else
return x;
# endif
}
#endif
#ifdef __cplusplus
}
#endif
_GL_INLINE_HEADER_END
#endif /* @ENDIAN_H_JUST_MISSING_STDINT@ */
#endif /* _@GUARD_PREFIX@_ENDIAN_H */
#endif /* _@GUARD_PREFIX@_ENDIAN_H */

6
lib/euidaccess.c
View file

@ -29,9 +29,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#if defined _WIN32 && ! defined __CYGWIN__
# include <io.h>
#else
#if !(defined _WIN32 && ! defined __CYGWIN__)
# include "root-uid.h"
#endif
@ -88,7 +86,7 @@ euidaccess (const char *file, int mode)
#elif HAVE_EACCESS /* FreeBSD */
return eaccess (file, mode);
#elif defined _WIN32 && ! defined __CYGWIN__ /* mingw */
return _access (file, mode);
return access (file, mode);
#else /* Mac OS X, NetBSD, OpenBSD, HP-UX, Solaris, Cygwin, BeOS */
uid_t uid = getuid ();

2
lib/getopt.c
View file

@ -723,7 +723,7 @@ _getopt_internal (int argc, char **argv, const char *optstring,
return result;
}
/* glibc gets a LSB-compliant getopt and a POSIX-complaint __posix_getopt.
/* glibc gets a LSB-compliant getopt and a POSIX-compliant __posix_getopt.
Standalone applications just get a POSIX-compliant getopt.
POSIX and LSB both require these functions to take 'char *const *argv'
even though this is incorrect (because of the permutation). */

42
lib/gnulib.mk.in
View file

@ -264,6 +264,8 @@ EMACSRES = @EMACSRES@
EMACS_MANIFEST = @EMACS_MANIFEST@
EMULTIHOP_HIDDEN = @EMULTIHOP_HIDDEN@
EMULTIHOP_VALUE = @EMULTIHOP_VALUE@
ENDIAN_H = @ENDIAN_H@
ENDIAN_H_JUST_MISSING_STDINT = @ENDIAN_H_JUST_MISSING_STDINT@
ENOLINK_HIDDEN = @ENOLINK_HIDDEN@
ENOLINK_VALUE = @ENOLINK_VALUE@
EOVERFLOW_HIDDEN = @EOVERFLOW_HIDDEN@
@ -349,6 +351,7 @@ GL_COND_OBJ_UTIMENSAT_CONDITION = @GL_COND_OBJ_UTIMENSAT_CONDITION@
GL_GENERATE_ALLOCA_H_CONDITION = @GL_GENERATE_ALLOCA_H_CONDITION@
GL_GENERATE_ASSERT_H_CONDITION = @GL_GENERATE_ASSERT_H_CONDITION@
GL_GENERATE_BYTESWAP_H_CONDITION = @GL_GENERATE_BYTESWAP_H_CONDITION@
GL_GENERATE_ENDIAN_H_CONDITION = @GL_GENERATE_ENDIAN_H_CONDITION@
GL_GENERATE_ERRNO_H_CONDITION = @GL_GENERATE_ERRNO_H_CONDITION@
GL_GENERATE_EXECINFO_H_CONDITION = @GL_GENERATE_EXECINFO_H_CONDITION@
GL_GENERATE_GETOPT_CDEFS_H_CONDITION = @GL_GENERATE_GETOPT_CDEFS_H_CONDITION@
@ -761,6 +764,7 @@ HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
HAVE_DIRENT_H = @HAVE_DIRENT_H@
HAVE_DPRINTF = @HAVE_DPRINTF@
HAVE_DUP3 = @HAVE_DUP3@
HAVE_ENDIAN_H = @HAVE_ENDIAN_H@
HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
HAVE_EXECVPE = @HAVE_EXECVPE@
HAVE_EXPLICIT_BZERO = @HAVE_EXPLICIT_BZERO@
@ -1044,6 +1048,7 @@ NDK_BUILD_SDK = @NDK_BUILD_SDK@
NEXT_ASSERT_H = @NEXT_ASSERT_H@
NEXT_AS_FIRST_DIRECTIVE_ASSERT_H = @NEXT_AS_FIRST_DIRECTIVE_ASSERT_H@
NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
NEXT_AS_FIRST_DIRECTIVE_ENDIAN_H = @NEXT_AS_FIRST_DIRECTIVE_ENDIAN_H@
NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
@ -1063,6 +1068,7 @@ NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
NEXT_AS_FIRST_DIRECTIVE_UNISTD_H = @NEXT_AS_FIRST_DIRECTIVE_UNISTD_H@
NEXT_DIRENT_H = @NEXT_DIRENT_H@
NEXT_ENDIAN_H = @NEXT_ENDIAN_H@
NEXT_ERRNO_H = @NEXT_ERRNO_H@
NEXT_FCNTL_H = @NEXT_FCNTL_H@
NEXT_GETOPT_H = @NEXT_GETOPT_H@
@ -1189,6 +1195,7 @@ REPLACE_GETPROGNAME = @REPLACE_GETPROGNAME@
REPLACE_GETRANDOM = @REPLACE_GETRANDOM@
REPLACE_GETSUBOPT = @REPLACE_GETSUBOPT@
REPLACE_GETTIMEOFDAY = @REPLACE_GETTIMEOFDAY@
REPLACE_GETUSERSHELL = @REPLACE_GETUSERSHELL@
REPLACE_GMTIME = @REPLACE_GMTIME@
REPLACE_IMAXABS = @REPLACE_IMAXABS@
REPLACE_IMAXDIV = @REPLACE_IMAXDIV@
@ -1450,6 +1457,7 @@ gl_GNULIB_ENABLED_d3b2383720ee0e541357aa2aac598e2b_CONDITION = @gl_GNULIB_ENABLE
gl_GNULIB_ENABLED_dirfd_CONDITION = @gl_GNULIB_ENABLED_dirfd_CONDITION@
gl_GNULIB_ENABLED_e80bf6f757095d2e5fc94dafb8f8fc8b_CONDITION = @gl_GNULIB_ENABLED_e80bf6f757095d2e5fc94dafb8f8fc8b_CONDITION@
gl_GNULIB_ENABLED_ef455225c00f5049c808c2eda3e76866_CONDITION = @gl_GNULIB_ENABLED_ef455225c00f5049c808c2eda3e76866_CONDITION@
gl_GNULIB_ENABLED_endian_CONDITION = @gl_GNULIB_ENABLED_endian_CONDITION@
gl_GNULIB_ENABLED_euidaccess_CONDITION = @gl_GNULIB_ENABLED_euidaccess_CONDITION@
gl_GNULIB_ENABLED_fd38c7e463b54744b77b98aeafb4fa7c_CONDITION = @gl_GNULIB_ENABLED_fd38c7e463b54744b77b98aeafb4fa7c_CONDITION@
gl_GNULIB_ENABLED_getdelim_CONDITION = @gl_GNULIB_ENABLED_getdelim_CONDITION@
@ -1900,6 +1908,39 @@ EXTRA_DIST += eloop-threshold.h
endif
## end gnulib module eloop-threshold
## begin gnulib module endian
ifeq (,$(OMIT_GNULIB_MODULE_endian))
ifneq (,$(gl_GNULIB_ENABLED_endian_CONDITION))
BUILT_SOURCES += $(ENDIAN_H)
# We need the following in order to create <endian.h> when the system
# doesn't have one.
ifneq (,$(GL_GENERATE_ENDIAN_H_CONDITION))
endian.h: endian.in.h $(top_builddir)/config.status
$(gl_V_at)$(SED_HEADER_STDOUT) \
-e 's|@''GUARD_PREFIX''@|GL|g' \
-e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
-e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
-e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
-e 's|@''HAVE_ENDIAN_H''@|$(HAVE_ENDIAN_H)|g' \
-e 's|@''NEXT_ENDIAN_H''@|$(NEXT_ENDIAN_H)|g' \
-e 's|@''ENDIAN_H_JUST_MISSING_STDINT''@|$(ENDIAN_H_JUST_MISSING_STDINT)|g' \
$(srcdir)/endian.in.h > $@-t
$(AM_V_at)mv $@-t $@
libgnu_a_SOURCES += endian.c
else
endian.h: $(top_builddir)/config.status
rm -f $@
endif
MOSTLYCLEANFILES += endian.h endian.h-t
endif
EXTRA_DIST += endian.in.h
endif
## end gnulib module endian
## begin gnulib module errno
ifeq (,$(OMIT_GNULIB_MODULE_errno))
@ -4254,6 +4295,7 @@ unistd.h: unistd.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
-e 's|@''REPLACE_GETPAGESIZE''@|$(REPLACE_GETPAGESIZE)|g' \
-e 's|@''REPLACE_GETPASS''@|$(REPLACE_GETPASS)|g' \
-e 's|@''REPLACE_GETPASS_FOR_GETPASS_GNU''@|$(REPLACE_GETPASS_FOR_GETPASS_GNU)|g' \
-e 's|@''REPLACE_GETUSERSHELL''@|$(REPLACE_GETUSERSHELL)|g' \
-e 's|@''REPLACE_ISATTY''@|$(REPLACE_ISATTY)|g' \
-e 's|@''REPLACE_LCHOWN''@|$(REPLACE_LCHOWN)|g' \
-e 's|@''REPLACE_LINK''@|$(REPLACE_LINK)|g' \

69
lib/ieee754.in.h
View file

@ -16,37 +16,28 @@
<https://www.gnu.org/licenses/>. */
#ifndef _IEEE754_H
#define _IEEE754_H 1
#ifndef _GL_GNULIB_HEADER
/* Ordinary glibc usage. */
# include <features.h>
# include <endian.h>
# include <bits/endian.h>
# define _IEEE754_BYTE_ORDER __BYTE_ORDER
# define _IEEE754_BIG_ENDIAN __BIG_ENDIAN
# define _IEEE754_LITTLE_ENDIAN __LITTLE_ENDIAN
# define _IEEE754_FLOAT_WORD_ORDER __FLOAT_WORD_ORDER
#else
/* Gnulib usage. */
# ifndef __BEGIN_DECLS
# ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
# else
# define __BEGIN_DECLS
# define __END_DECLS
# endif
# endif
# ifndef __FLOAT_WORD_ORDER
# define __LITTLE_ENDIAN 1234
# define __BIG_ENDIAN 4321
# ifdef WORDS_BIGENDIAN
# define __BYTE_ORDER __BIG_ENDIAN
# else
# define __BYTE_ORDER __LITTLE_ENDIAN
# endif
# define __FLOAT_WORD_ORDER __BYTE_ORDER
# endif
# include <endian.h>
# define _IEEE754_BYTE_ORDER BYTE_ORDER
# define _IEEE754_BIG_ENDIAN BIG_ENDIAN
# define _IEEE754_LITTLE_ENDIAN LITTLE_ENDIAN
# define _IEEE754_FLOAT_WORD_ORDER BYTE_ORDER
#endif
__BEGIN_DECLS
#ifdef __cplusplus
extern "C" {
#endif
union ieee754_float
{
@ -55,12 +46,12 @@ union ieee754_float
/* This is the IEEE 754 single-precision format. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:8;
unsigned int mantissa:23;
#endif /* Big endian. */
#if __BYTE_ORDER == __LITTLE_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
unsigned int mantissa:23;
unsigned int exponent:8;
unsigned int negative:1;
@ -70,13 +61,13 @@ union ieee754_float
/* This format makes it easier to see if a NaN is a signalling NaN. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:8;
unsigned int quiet_nan:1;
unsigned int mantissa:22;
#endif /* Big endian. */
#if __BYTE_ORDER == __LITTLE_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
unsigned int mantissa:22;
unsigned int quiet_nan:1;
unsigned int exponent:8;
@ -95,15 +86,15 @@ union ieee754_double
/* This is the IEEE 754 double-precision format. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:11;
/* Together these comprise the mantissa. */
unsigned int mantissa0:20;
unsigned int mantissa1:32;
#endif /* Big endian. */
#if __BYTE_ORDER == __LITTLE_ENDIAN
# if __FLOAT_WORD_ORDER == __BIG_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
unsigned int mantissa0:20;
unsigned int exponent:11;
unsigned int negative:1;
@ -121,7 +112,7 @@ union ieee754_double
/* This format makes it easier to see if a NaN is a signalling NaN. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:11;
unsigned int quiet_nan:1;
@ -129,7 +120,7 @@ union ieee754_double
unsigned int mantissa0:19;
unsigned int mantissa1:32;
#else
# if __FLOAT_WORD_ORDER == __BIG_ENDIAN
# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
unsigned int mantissa0:19;
unsigned int quiet_nan:1;
unsigned int exponent:11;
@ -157,15 +148,15 @@ union ieee854_long_double
/* This is the IEEE 854 double-extended-precision format. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:15;
unsigned int empty:16;
unsigned int mantissa0:32;
unsigned int mantissa1:32;
#endif
#if __BYTE_ORDER == __LITTLE_ENDIAN
# if __FLOAT_WORD_ORDER == __BIG_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
unsigned int exponent:15;
unsigned int negative:1;
unsigned int empty:16;
@ -184,7 +175,7 @@ union ieee854_long_double
/* This is for NaNs in the IEEE 854 double-extended-precision format. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:15;
unsigned int empty:16;
@ -193,8 +184,8 @@ union ieee854_long_double
unsigned int mantissa0:30;
unsigned int mantissa1:32;
#endif
#if __BYTE_ORDER == __LITTLE_ENDIAN
# if __FLOAT_WORD_ORDER == __BIG_ENDIAN
#if _IEEE754_BYTE_ORDER == _IEEE754_LITTLE_ENDIAN
# if _IEEE754_FLOAT_WORD_ORDER == _IEEE754_BIG_ENDIAN
unsigned int exponent:15;
unsigned int negative:1;
unsigned int empty:16;
@ -217,6 +208,8 @@ union ieee854_long_double
#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
__END_DECLS
#ifdef __cplusplus
}
#endif
#endif /* ieee754.h */

10
lib/readlink.c
View file

@ -98,6 +98,16 @@ rpl_readlink (char const *file, char *buf, size_t bufsize)
}
# endif
# if defined __CYGWIN__
/* On Cygwin 3.3.6, readlink("/dev/null") returns "\\Device\\Null", which
is unusable. Better fail with EINVAL. */
if (r > 0 && strncmp (file, "/dev/", 5) == 0 && buf[0] == '\\')
{
errno = EINVAL;
return -1;
}
# endif
return r;
}

10
lib/readlinkat.c
View file

@ -79,6 +79,16 @@ rpl_readlinkat (int fd, char const *file, char *buf, size_t bufsize)
}
# endif
# if defined __CYGWIN__
/* On Cygwin 3.3.6, readlinkat(AT_FDCWD,"/dev/null") returns "\\Device\\Null",
which is unusable. Better fail with EINVAL. */
if (r > 0 && strncmp (file, "/dev/", 5) == 0 && buf[0] == '\\')
{
errno = EINVAL;
return -1;
}
# endif
return r;
}

11
lib/stdint.in.h
View file

@ -80,7 +80,7 @@
#define _@GUARD_PREFIX@_STDINT_H
/* Get SCHAR_MIN, SCHAR_MAX, UCHAR_MAX, INT_MIN, INT_MAX,
LONG_MIN, LONG_MAX, ULONG_MAX, _GL_INTEGER_WIDTH. */
LONG_MIN, LONG_MAX, ULONG_MAX, CHAR_BIT, _GL_INTEGER_WIDTH. */
#include <limits.h>
/* Override WINT_MIN and WINT_MAX if gnulib's <wchar.h> or <wctype.h> overrides
@ -189,6 +189,10 @@ typedef __int64 gl_int64_t;
# define int64_t gl_int64_t
# define GL_INT64_T
# else
/* Verify that 'long long' has exactly 64 bits. */
typedef _gl_verify_int64_bits[
_STDINT_MAX (1, sizeof (long long) * CHAR_BIT, 0ll) >> 31 >> 31 == 1
? 1 : -1];
# undef int64_t
typedef long long int gl_int64_t;
# define int64_t gl_int64_t
@ -210,6 +214,11 @@ typedef unsigned __int64 gl_uint64_t;
# define uint64_t gl_uint64_t
# define GL_UINT64_T
# else
/* Verify that 'unsigned long long' has exactly 64 bits. */
typedef _gl_verify_uint64_bits[
_STDINT_MAX (0, sizeof (unsigned long long) * CHAR_BIT, 0ull)
>> 31 >> 31 >> 1 == 1
? 1 : -1];
# undef uint64_t
typedef unsigned long long int gl_uint64_t;
# define uint64_t gl_uint64_t

4
lib/stdlib.in.h
View file

@ -26,6 +26,10 @@
#@INCLUDE_NEXT@ @NEXT_STDLIB_H@
/* Make sure that the macros that indicate the special invocation convention
get undefined. This is needed at least on CentOS 7. */
#undef __need_malloc_and_calloc
#else
/* Normal invocation convention. */

11
lib/strftime.c
View file

@ -1252,6 +1252,9 @@ __strftime_internal (STREAM_OR_CHAR_T *s, STRFTIME_ARG (size_t maxsize)
cpy (am_len, a_month);
break;
#else
# if defined _WIN32 && !defined __CYGWIN__
format_char = L_('b');
# endif
goto underlying_strftime;
#endif
@ -1288,6 +1291,9 @@ __strftime_internal (STREAM_OR_CHAR_T *s, STRFTIME_ARG (size_t maxsize)
subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT));
#elif USE_C_LOCALE && !HAVE_STRFTIME_L
subfmt = L_("%a %b %e %H:%M:%S %Y");
#elif defined _WIN32 && !defined __CYGWIN__
/* On native Windows, "%c" is "%d/%m/%Y %H:%M:%S" by default. */
subfmt = L_("%a %b %e %H:%M:%S %Y");
#else
goto underlying_strftime;
#endif
@ -1709,8 +1715,9 @@ __strftime_internal (STREAM_OR_CHAR_T *s, STRFTIME_ARG (size_t maxsize)
#elif USE_C_LOCALE && !HAVE_STRFTIME_L
subfmt = L_("%I:%M:%S %p");
goto subformat;
#elif (defined __APPLE__ && defined __MACH__) || defined __FreeBSD__
/* macOS, FreeBSD strftime() may produce empty output for "%r". */
#elif (defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ || (defined _WIN32 && !defined __CYGWIN__)
/* macOS, FreeBSD, native Windows strftime() may produce empty output
for "%r". */
subfmt = L_("%I:%M:%S %p");
goto subformat;
#else

39
lib/unistd.in.h
View file

@ -1531,12 +1531,21 @@ _GL_CXXALIASWARN (getpid);
#if @GNULIB_GETUSERSHELL@
# if @REPLACE_GETUSERSHELL@
/* Return the next valid login shell on the system, or NULL when the end of
the list has been reached. */
# if !@HAVE_DECL_GETUSERSHELL@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef getusershell
# define getusershell rpl_getusershell
# endif
_GL_FUNCDECL_RPL (getusershell, char *, (void));
_GL_CXXALIAS_RPL (getusershell, char *, (void));
# else
# if !@HAVE_DECL_GETUSERSHELL@
_GL_FUNCDECL_SYS (getusershell, char *, (void));
# endif
# endif
_GL_CXXALIAS_SYS (getusershell, char *, (void));
# endif
_GL_CXXALIASWARN (getusershell);
#elif defined GNULIB_POSIXCHECK
# undef getusershell
@ -1548,10 +1557,19 @@ _GL_WARN_ON_USE (getusershell, "getusershell is unportable - "
#if @GNULIB_GETUSERSHELL@
/* Rewind to pointer that is advanced at each getusershell() call. */
# if !@HAVE_DECL_GETUSERSHELL@
# if @REPLACE_GETUSERSHELL@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef setusershell
# define setusershell rpl_setusershell
# endif
_GL_FUNCDECL_RPL (setusershell, void, (void));
_GL_CXXALIAS_RPL (setusershell, void, (void));
# else
# if !@HAVE_DECL_GETUSERSHELL@
_GL_FUNCDECL_SYS (setusershell, void, (void));
# endif
# endif
_GL_CXXALIAS_SYS (setusershell, void, (void));
# endif
_GL_CXXALIASWARN (setusershell);
#elif defined GNULIB_POSIXCHECK
# undef setusershell
@ -1564,10 +1582,19 @@ _GL_WARN_ON_USE (setusershell, "setusershell is unportable - "
#if @GNULIB_GETUSERSHELL@
/* Free the pointer that is advanced at each getusershell() call and
associated resources. */
# if !@HAVE_DECL_GETUSERSHELL@
# if @REPLACE_GETUSERSHELL@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef endusershell
# define endusershell rpl_endusershell
# endif
_GL_FUNCDECL_RPL (endusershell, void, (void));
_GL_CXXALIAS_RPL (endusershell, void, (void));
# else
# if !@HAVE_DECL_GETUSERSHELL@
_GL_FUNCDECL_SYS (endusershell, void, (void));
# endif
# endif
_GL_CXXALIAS_SYS (endusershell, void, (void));
# endif
_GL_CXXALIASWARN (endusershell);
#elif defined GNULIB_POSIXCHECK
# undef endusershell

8
lib/utimens.c
View file

@ -220,7 +220,7 @@ fdutimens (int fd, char const *file, struct timespec const timespec[2])
if (0 <= utimensat_works_really)
{
int result;
# if __linux__ || __sun
# if defined __linux__ || defined __sun || defined __NetBSD__
/* As recently as Linux kernel 2.6.32 (Dec 2009), several file
systems (xfs, ntfs-3g) have bugs with a single UTIME_OMIT,
but work if both times are either explicitly specified or
@ -230,6 +230,7 @@ fdutimens (int fd, char const *file, struct timespec const timespec[2])
where UTIME_OMIT would have worked.
The same bug occurs in Solaris 11.1 (Apr 2013).
The same bug occurs in NetBSD 10.0 (May 2024).
FIXME: Simplify this in 2024, when these file system bugs are
no longer common on Gnulib target platforms. */
@ -440,7 +441,7 @@ fdutimens (int fd, char const *file, struct timespec const timespec[2])
# endif
if (futimes (fd, t) == 0)
{
# if __linux__ && __GLIBC__
# if defined __linux__ && defined __GLIBC__
/* Work around a longstanding glibc bug, still present as
of 2010-12-27. On older Linux kernels that lack both
utimensat and utimes, glibc's futimes rounds instead of
@ -553,7 +554,7 @@ lutimens (char const *file, struct timespec const timespec[2])
if (0 <= lutimensat_works_really)
{
int result;
# if __linux__ || __sun
# if defined __linux__ || defined __sun || defined __NetBSD__
/* As recently as Linux kernel 2.6.32 (Dec 2009), several file
systems (xfs, ntfs-3g) have bugs with a single UTIME_OMIT,
but work if both times are either explicitly specified or
@ -563,6 +564,7 @@ lutimens (char const *file, struct timespec const timespec[2])
UTIME_OMIT would have worked.
The same bug occurs in Solaris 11.1 (Apr 2013).
The same bug occurs in NetBSD 10.0 (May 2024).
FIXME: Simplify this for Linux in 2016 and for Solaris in
2024, when file system bugs are no longer common. */

11
lib/utimensat.c
View file

@ -77,7 +77,7 @@ rpl_utimensat (int fd, char const *file, struct timespec const times[2],
int flag)
# undef utimensat
{
# if defined __linux__ || defined __sun
# if defined __linux__ || defined __sun || defined __NetBSD__
struct timespec ts[2];
# endif
@ -86,7 +86,7 @@ rpl_utimensat (int fd, char const *file, struct timespec const times[2],
if (0 <= utimensat_works_really)
{
int result;
# if defined __linux__ || defined __sun
# if defined __linux__ || defined __sun || defined __NetBSD__
struct stat st;
/* As recently as Linux kernel 2.6.32 (Dec 2009), several file
systems (xfs, ntfs-3g) have bugs with a single UTIME_OMIT,
@ -97,6 +97,7 @@ rpl_utimensat (int fd, char const *file, struct timespec const times[2],
UTIME_OMIT would have worked.
The same bug occurs in Solaris 11.1 (Apr 2013).
The same bug occurs in NetBSD 10.0 (May 2024).
FIXME: Simplify this in 2024, when these file system bugs are
no longer common on Gnulib target platforms. */
@ -117,9 +118,11 @@ rpl_utimensat (int fd, char const *file, struct timespec const times[2],
ts[1] = times[1];
times = ts;
}
# ifdef __hppa__
# if defined __hppa__ || defined __NetBSD__
/* Linux kernel 2.6.22.19 on hppa does not reject invalid tv_nsec
values. */
values.
The same bug occurs in NetBSD 10.0 (May 2024). */
else if (times
&& ((times[0].tv_nsec != UTIME_NOW
&& ! (0 <= times[0].tv_nsec

15
lib/verify.h
View file

@ -259,11 +259,22 @@ template <int w>
&& (!defined __cplusplus \
|| (__cpp_static_assert < 201411 \
&& __GNUG__ < 6 && __clang_major__ < 6 && _MSC_VER < 1910)))
# if defined __cplusplus && _MSC_VER >= 1900 && !defined __clang__
# if (defined __cplusplus && defined __GNUG__ && __GNUG__ < 6 \
&& __cplusplus == 201103L && !defined __clang__)
/* g++ >= 4.7, < 6 with option -std=c++11 or -std=gnu++11 supports the
two-arguments static_assert but not the one-argument static_assert, and
it does not support _Static_assert.
We have to play preprocessor tricks to distinguish the two cases. */
# define _GL_SA1(a1) static_assert ((a1), "static assertion failed")
# define _GL_SA2 static_assert
# define _GL_SA3 static_assert
# define _GL_SA_PICK(x1,x2,x3,x4,...) x4
# define static_assert(...) _GL_SA_PICK(__VA_ARGS__,_GL_SA3,_GL_SA2,_GL_SA1) (__VA_ARGS__)
# elif defined __cplusplus && _MSC_VER >= 1900 && !defined __clang__
/* MSVC 14 in C++ mode supports the two-arguments static_assert but not
the one-argument static_assert, and it does not support _Static_assert.
We have to play preprocessor tricks to distinguish the two cases.
Since the MSVC preprocessor is not ISO C compliant (see above),.
Since the MSVC preprocessor is not ISO C compliant (see above),
the solution is specific to MSVC. */
# define _GL_EXPAND(x) x
# define _GL_SA1(a1) static_assert ((a1), "static assertion failed")

103
m4/endian_h.m4 Normal file
View file

@ -0,0 +1,103 @@
# endian_h.m4
# serial 4
dnl Copyright 2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl A placeholder for <endian.h>, for platforms that have issues.
AC_DEFUN_ONCE([gl_ENDIAN_H],
[
AC_REQUIRE([gl_BIGENDIAN])
AC_CHECK_HEADERS_ONCE([endian.h])
gl_CHECK_NEXT_HEADERS([endian.h])
if test $ac_cv_header_endian_h = yes; then
HAVE_ENDIAN_H=1
dnl Check if endian.h defines uint16_t, uint32_t, and uint64_t.
AC_CACHE_CHECK([if endian.h defines stdint types],
[gl_cv_header_endian_h_stdint_types],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <endian.h>
]],
[[uint16_t t1 = 0;
uint32_t t2 = 0;
uint64_t t3 = 0;
return !(t1 + t2 + t3);
]])],
[gl_cv_header_endian_h_stdint_types=yes],
[gl_cv_header_endian_h_stdint_types=no])
])
AC_CACHE_CHECK([if endian.h defines functions and macros],
[gl_cv_header_working_endian_h],
[gl_cv_header_working_endian_h=no
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#include <endian.h>
]],
[[
#if LITTLE_ENDIAN == BIG_ENDIAN
# error "Endian macros not unique."
#endif
#if BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN
# error "Byte order not defined."
#endif
/* Big endian to host. */
int value16_1 = be16toh (0.0);
int value32_1 = be32toh (0.0);
int value64_1 = be64toh (0.0);
/* Host to big endian. */
int value16_2 = htobe16 (0.0);
int value32_2 = htobe32 (0.0);
int value64_2 = htobe64 (0.0);
/* Little endian to host. */
int value16_3 = le16toh (0.0);
int value32_3 = le32toh (0.0);
int value64_3 = le64toh (0.0);
/* Host to little endian. */
int value16_4 = htole16 (0.0);
int value32_4 = htole32 (0.0);
int value64_4 = htole64 (0.0);
/* Make sure the variables get used. */
return !(value16_1 + value32_1 + value64_1
+ value16_2 + value32_2 + value64_2
+ value16_3 + value32_3 + value64_3
+ value16_4 + value32_4 + value64_4);
]])],
[gl_cv_header_working_endian_h=yes],
[gl_cv_header_working_endian_h=no])
])
else
HAVE_ENDIAN_H=0
fi
dnl Check if endian.h should be generated.
if test "$gl_cv_header_endian_h_stdint_types" = yes \
&& test "$gl_cv_header_working_endian_h" = yes; then
GL_GENERATE_ENDIAN_H=false
else
GL_GENERATE_ENDIAN_H=true
fi
dnl Check if endian.h works but is missing types from stdint.h.
if test $GL_GENERATE_ENDIAN_H; then
if test "$gl_cv_header_working_endian_h" = yes; then
ENDIAN_H_JUST_MISSING_STDINT=1
else
ENDIAN_H_JUST_MISSING_STDINT=0
fi
else
ENDIAN_H_JUST_MISSING_STDINT=0
fi
AC_SUBST([HAVE_ENDIAN_H])
AC_SUBST([ENDIAN_H_JUST_MISSING_STDINT])
])

11
m4/getopt.m4
View file

@ -1,5 +1,5 @@
# getopt.m4
# serial 49
# serial 50
dnl Copyright (C) 2002-2006, 2008-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -366,14 +366,7 @@ dnl is ambiguous with environment values that contain newlines.
AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
[
AC_CHECK_HEADERS_ONCE([sys/cdefs.h])
if test $ac_cv_header_sys_cdefs_h = yes; then
HAVE_SYS_CDEFS_H=1
else
HAVE_SYS_CDEFS_H=0
fi
AC_SUBST([HAVE_SYS_CDEFS_H])
gl_CHECK_HEADER_SYS_CDEFS_H
AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
[Define to rpl_ if the getopt replacement functions and variables
should be used.])

103
m4/gnulib-common.m4
View file

@ -1,5 +1,5 @@
# gnulib-common.m4
# serial 93
# serial 95
dnl Copyright (C) 2007-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -114,8 +114,10 @@ AC_DEFUN([gl_COMMON_BODY], [
# define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3)
# define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7)
# define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96)
# define _GL_ATTR_reproducible 0 /* not yet supported, as of GCC 14 */
# define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
# define _GL_ATTR_unsequenced 0 /* not yet supported, as of GCC 14 */
# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
# endif
@ -152,7 +154,7 @@ AC_DEFUN([gl_COMMON_BODY], [
_GL_ATTRIBUTE_ALLOC_SIZE ((M, N)) declares that the Mth argument multiplied
by the Nth argument of the function is the size of the returned memory block.
*/
/* Applies to: function, pointer to function, function types. */
/* Applies to: functions, pointer to functions, function types. */
#ifndef _GL_ATTRIBUTE_ALLOC_SIZE
# if _GL_HAS_ATTRIBUTE (alloc_size)
# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
@ -163,7 +165,7 @@ AC_DEFUN([gl_COMMON_BODY], [
/* _GL_ATTRIBUTE_ALWAYS_INLINE tells that the compiler should always inline the
function and report an error if it cannot do so. */
/* Applies to: function. */
/* Applies to: functions. */
#ifndef _GL_ATTRIBUTE_ALWAYS_INLINE
# if _GL_HAS_ATTRIBUTE (always_inline)
# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__))
@ -175,7 +177,7 @@ AC_DEFUN([gl_COMMON_BODY], [
/* _GL_ATTRIBUTE_ARTIFICIAL declares that the function is not important to show
in stack traces when debugging. The compiler should omit the function from
stack traces. */
/* Applies to: function. */
/* Applies to: functions. */
#ifndef _GL_ATTRIBUTE_ARTIFICIAL
# if _GL_HAS_ATTRIBUTE (artificial)
# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__))
@ -201,18 +203,23 @@ AC_DEFUN([gl_COMMON_BODY], [
# endif
#endif
/* _GL_ATTRIBUTE_CONST declares that it is OK for a compiler to omit duplicate
calls to the function with the same arguments.
This attribute is safe for a function that neither depends on nor affects
observable state, and always returns exactly once - e.g., does not loop
forever, and does not call longjmp.
(This attribute is stricter than _GL_ATTRIBUTE_PURE.) */
/* _GL_ATTRIBUTE_CONST declares:
It is OK for a compiler to move calls to the function and to omit
calls to the function if another call has the same arguments or the
result is not used.
This attribute is safe for a function that neither depends on
nor affects state, and always returns exactly once -
e.g., does not raise an exception, call longjmp, or loop forever.
(This attribute is stricter than _GL_ATTRIBUTE_PURE because the
function cannot observe state. It is stricter than
_GL_ATTRIBUTE_UNSEQUENCED because the function must return exactly
once and cannot depend on state addressed by its arguments.) */
/* Applies to: functions. */
#ifndef _GL_ATTRIBUTE_CONST
# if _GL_HAS_ATTRIBUTE (const)
# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
# else
# define _GL_ATTRIBUTE_CONST
# define _GL_ATTRIBUTE_CONST _GL_ATTRIBUTE_UNSEQUENCED
# endif
#endif
@ -505,9 +512,9 @@ AC_DEFUN([gl_COMMON_BODY], [
minimizing the memory required. */
/* Applies to: struct members, struct, union,
in C++ also: class. */
#ifndef _GL_ATTRIBUTE_PACKED
/* Oracle Studio 12.6 miscompiles code with __attribute__ ((__packed__)) despite
__has_attribute OK. */
#ifndef _GL_ATTRIBUTE_PACKED
# if _GL_HAS_ATTRIBUTE (packed) && !defined __SUNPRO_C
# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__))
# else
@ -515,18 +522,49 @@ AC_DEFUN([gl_COMMON_BODY], [
# endif
#endif
/* _GL_ATTRIBUTE_PURE declares that It is OK for a compiler to omit duplicate
calls to the function with the same arguments if observable state is not
changed between calls.
This attribute is safe for a function that does not affect
observable state, and always returns exactly once.
(This attribute is looser than _GL_ATTRIBUTE_CONST.) */
/* _GL_ATTRIBUTE_PURE declares:
It is OK for a compiler to move calls to the function and to omit
calls to the function if another call has the same arguments or the
result is not used, and if observable state is the same.
This attribute is safe for a function that does not affect observable state
and always returns exactly once.
(This attribute is looser than _GL_ATTRIBUTE_CONST because the function
can depend on observable state. It is stricter than
_GL_ATTRIBUTE_REPRODUCIBLE because the function must return exactly
once and cannot affect state addressed by its arguments.) */
/* Applies to: functions. */
#ifndef _GL_ATTRIBUTE_PURE
# if _GL_HAS_ATTRIBUTE (pure)
# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
# else
# define _GL_ATTRIBUTE_PURE
# define _GL_ATTRIBUTE_PURE _GL_ATTRIBUTE_REPRODUCIBLE
# endif
#endif
/* _GL_ATTRIBUTE_REPRODUCIBLE declares:
It is OK for a compiler to move calls to the function and to omit duplicate
calls to the function with the same arguments, so long as the state
addressed by its arguments is the same and is updated in time for
the rest of the program.
This attribute is safe for a function that is effectless and idempotent; see
ISO C 23 § 6.7.12.7 for a definition of these terms.
(This attribute is looser than _GL_ATTRIBUTE_UNSEQUENCED because
the function need not be stateless and idempotent. It is looser
than _GL_ATTRIBUTE_PURE because the function need not return
exactly once and can affect state addressed by its arguments.)
See also <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2956.htm> and
<https://stackoverflow.com/questions/76847905/>. */
/* Applies to: functions, pointer to functions, function types. */
#ifndef _GL_ATTRIBUTE_REPRODUCIBLE
/* This may be revisited when gcc and clang support [[reproducible]] or possibly
__attribute__ ((__reproducible__)). */
# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE
# if _GL_HAS_ATTRIBUTE (reproducible)
# define _GL_ATTRIBUTE_REPRODUCIBLE [[reproducible]]
# endif
# endif
# ifndef _GL_ATTRIBUTE_REPRODUCIBLE
# define _GL_ATTRIBUTE_REPRODUCIBLE
# endif
#endif
@ -554,6 +592,33 @@ AC_DEFUN([gl_COMMON_BODY], [
# endif
#endif
/* _GL_ATTRIBUTE_UNSEQUENCED declares:
It is OK for a compiler to move calls to the function and to omit duplicate
calls to the function with the same arguments, so long as the state
addressed by its arguments is the same.
This attribute is safe for a function that is effectless, idempotent,
stateless, and independent; see ISO C 23 § 6.7.12.7 for a definition of
these terms.
(This attribute is stricter than _GL_ATTRIBUTE_REPRODUCIBLE because
the function must be stateless and independent. It is looser than
_GL_ATTRIBUTE_CONST because the function need not return exactly
once and can depend on state addressed by its arguments.)
See also <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2956.htm> and
<https://stackoverflow.com/questions/76847905/>. */
/* Applies to: functions, pointer to functions, function types. */
#ifndef _GL_ATTRIBUTE_UNSEQUENCED
/* This may be revisited when gcc and clang support [[unsequenced]] or possibly
__attribute__ ((__unsequenced__)). */
# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE
# if _GL_HAS_ATTRIBUTE (unsequenced)
# define _GL_ATTRIBUTE_UNSEQUENCED [[unsequenced]]
# endif
# endif
# ifndef _GL_ATTRIBUTE_UNSEQUENCED
# define _GL_ATTRIBUTE_UNSEQUENCED
# endif
#endif
/* A helper macro. Don't use it directly. */
#ifndef _GL_ATTRIBUTE_UNUSED
# if _GL_HAS_ATTRIBUTE (unused)

19
m4/gnulib-comp.m4
View file

@ -77,6 +77,7 @@ AC_DEFUN([gl_EARLY],
# Code from module dtotimespec:
# Code from module dup2:
# Code from module eloop-threshold:
# Code from module endian:
# Code from module environ:
# Code from module errno:
# Code from module euidaccess:
@ -666,6 +667,7 @@ AC_DEFUN([gl_INIT],
gl_gnulib_enabled_cloexec=false
gl_gnulib_enabled_dirfd=false
gl_gnulib_enabled_925677f0343de64b89a9f0c790b4104c=false
gl_gnulib_enabled_endian=false
gl_gnulib_enabled_euidaccess=false
gl_gnulib_enabled_getdelim=false
gl_gnulib_enabled_getdtablesize=false
@ -724,6 +726,15 @@ AC_DEFUN([gl_INIT],
gl_gnulib_enabled_925677f0343de64b89a9f0c790b4104c=true
fi
}
func_gl_gnulib_m4code_endian ()
{
if $gl_gnulib_enabled_endian; then :; else
gl_ENDIAN_H
gl_CONDITIONAL_HEADER([endian.h])
AC_PROG_MKDIR_P
gl_gnulib_enabled_endian=true
fi
}
func_gl_gnulib_m4code_euidaccess ()
{
if $gl_gnulib_enabled_euidaccess; then :; else
@ -1036,6 +1047,9 @@ AC_DEFUN([gl_INIT],
if case $host_os in mingw* | windows*) false;; *) test $HAVE_GETRANDOM = 0 || test $REPLACE_GETRANDOM = 1;; esac; then
func_gl_gnulib_m4code_open
fi
if $GL_GENERATE_IEEE754_H; then
func_gl_gnulib_m4code_endian
fi
if test $REPLACE_MKTIME = 1; then
func_gl_gnulib_m4code_verify
fi
@ -1071,6 +1085,7 @@ AC_DEFUN([gl_INIT],
AM_CONDITIONAL([gl_GNULIB_ENABLED_cloexec], [$gl_gnulib_enabled_cloexec])
AM_CONDITIONAL([gl_GNULIB_ENABLED_dirfd], [$gl_gnulib_enabled_dirfd])
AM_CONDITIONAL([gl_GNULIB_ENABLED_925677f0343de64b89a9f0c790b4104c], [$gl_gnulib_enabled_925677f0343de64b89a9f0c790b4104c])
AM_CONDITIONAL([gl_GNULIB_ENABLED_endian], [$gl_gnulib_enabled_endian])
AM_CONDITIONAL([gl_GNULIB_ENABLED_euidaccess], [$gl_gnulib_enabled_euidaccess])
AM_CONDITIONAL([gl_GNULIB_ENABLED_getdelim], [$gl_gnulib_enabled_getdelim])
AM_CONDITIONAL([gl_GNULIB_ENABLED_getdtablesize], [$gl_gnulib_enabled_getdtablesize])
@ -1312,6 +1327,8 @@ AC_DEFUN([gl_FILE_LIST], [
lib/dup2.c
lib/dynarray.h
lib/eloop-threshold.h
lib/endian.c
lib/endian.in.h
lib/errno.in.h
lib/euidaccess.c
lib/execinfo.c
@ -1506,6 +1523,7 @@ AC_DEFUN([gl_FILE_LIST], [
m4/double-slash-root.m4
m4/dup2.m4
m4/eealloc.m4
m4/endian_h.m4
m4/environ.m4
m4/errno_h.m4
m4/euidaccess.m4
@ -1605,6 +1623,7 @@ AC_DEFUN([gl_FILE_LIST], [
m4/strtoimax.m4
m4/strtoll.m4
m4/symlink.m4
m4/sys_cdefs_h.m4
m4/sys_random_h.m4
m4/sys_select_h.m4
m4/sys_socket_h.m4

34
m4/readlink.m4
View file

@ -1,5 +1,5 @@
# readlink.m4
# serial 17
# serial 18
dnl Copyright (C) 2003, 2007, 2009-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -8,7 +8,7 @@ dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_READLINK],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_REQUIRE([AC_CANONICAL_HOST])
AC_CHECK_FUNCS_ONCE([readlink])
if test $ac_cv_func_readlink = no; then
HAVE_READLINK=0
@ -18,9 +18,13 @@ AC_DEFUN([gl_FUNC_READLINK],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <unistd.h>
/* Cause compilation failure if original declaration has wrong type. */
ssize_t readlink (const char *, char *, size_t);]])],
/* Cause compilation failure if original declaration has
wrong type. */
ssize_t readlink (const char *, char *, size_t);
]])
],
[gl_cv_decl_readlink_works=yes], [gl_cv_decl_readlink_works=no])])
dnl Solaris 9 ignores trailing slash.
dnl FreeBSD 7.2 dereferences only one level of links with trailing slash.
AC_CACHE_CHECK([whether readlink handles trailing slash correctly],
@ -31,8 +35,11 @@ AC_DEFUN([gl_FUNC_READLINK],
AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[#include <unistd.h>
]], [[char buf[20];
return readlink ("conftest.lnk2/", buf, sizeof buf) != -1;]])],
]],
[[char buf[20];
return readlink ("conftest.lnk2/", buf, sizeof buf) != -1;
]])
],
[gl_cv_func_readlink_trailing_slash=yes],
[gl_cv_func_readlink_trailing_slash=no],
[case "$host_os" in
@ -71,8 +78,11 @@ AC_DEFUN([gl_FUNC_READLINK],
AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[#include <unistd.h>
]], [[char c;
return readlink ("conftest.link", &c, 1) != 1;]])],
]],
[[char c;
return readlink ("conftest.link", &c, 1) != 1;
]])
],
[gl_cv_func_readlink_truncate=yes],
[gl_cv_func_readlink_truncate=no],
[case "$host_os" in
@ -103,6 +113,14 @@ AC_DEFUN([gl_FUNC_READLINK],
REPLACE_READLINK=1
;;
esac
dnl On Cygwin 3.3.6, readlink("/dev/null") returns "\\Device\\Null", which
dnl is unusable.
case "$host_os" in
cygwin*)
REPLACE_READLINK=1
;;
esac
fi
])

17
m4/readlinkat.m4
View file

@ -1,5 +1,5 @@
# readlinkat.m4
# serial 8
# serial 9
dnl Copyright (C) 2009-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -27,9 +27,12 @@ AC_DEFUN([gl_FUNC_READLINKAT],
[AC_LANG_PROGRAM(
[[#include <unistd.h>
/* Check whether original declaration has correct type. */
ssize_t readlinkat (int, char const *, char *, size_t);]])],
ssize_t readlinkat (int, char const *, char *, size_t);
]])
],
[gl_cv_decl_readlinkat_works=yes],
[gl_cv_decl_readlinkat_works=no])])
[gl_cv_decl_readlinkat_works=no])
])
# Assume readlinkat has the same bugs as readlink,
# as is the case on OS X 10.10 with trailing slashes.
case $gl_cv_decl_readlinkat_works,$gl_cv_func_readlink_trailing_slash,$gl_cv_func_readlink_truncate in
@ -39,5 +42,13 @@ AC_DEFUN([gl_FUNC_READLINKAT],
REPLACE_READLINKAT=1
;;
esac
dnl On Cygwin 3.3.6, readlinkat(AT_FDCWD,"/dev/null") returns
dnl "\\Device\\Null", which is unusable.
case "$host_os" in
cygwin*)
REPLACE_READLINKAT=1
;;
esac
fi
])

25
m4/sys_cdefs_h.m4 Normal file
View file

@ -0,0 +1,25 @@
# sys_cdefs_h.m4 - Is <sys/cdefs.h> compatible enough with glibc?
# serial 2
dnl Copyright 2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl Written by Paul Eggert.
AC_DEFUN_ONCE([gl_CHECK_HEADER_SYS_CDEFS_H],
[AC_CACHE_CHECK([for glibc-compatible sys/cdefs.h],
[gl_cv_header_sys_cdefs_h],
[AC_COMPILE_IFELSE(
[AC_LANG_DEFINES_PROVIDED
[#include <sys/cdefs.h>
enum { foo = __GNUC_PREREQ (14, 1) } bar;
]],
[gl_cv_header_sys_cdefs_h=yes],
[gl_cv_header_sys_cdefs_h=no])])
if test "$gl_cv_header_sys_cdefs_h" = yes; then
HAVE_SYS_CDEFS_H=1
else
HAVE_SYS_CDEFS_H=0
fi
AC_SUBST([HAVE_SYS_CDEFS_H])])

3
m4/unistd_h.m4
View file

@ -1,5 +1,5 @@
# unistd_h.m4
# serial 95
# serial 96
dnl Copyright (C) 2006-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -248,6 +248,7 @@ AC_DEFUN([gl_UNISTD_H_DEFAULTS],
REPLACE_GETPAGESIZE=0; AC_SUBST([REPLACE_GETPAGESIZE])
REPLACE_GETPASS=0; AC_SUBST([REPLACE_GETPASS])
REPLACE_GETPASS_FOR_GETPASS_GNU=0; AC_SUBST([REPLACE_GETPASS_FOR_GETPASS_GNU])
REPLACE_GETUSERSHELL=0; AC_SUBST([REPLACE_GETUSERSHELL])
REPLACE_ISATTY=0; AC_SUBST([REPLACE_ISATTY])
REPLACE_LCHOWN=0; AC_SUBST([REPLACE_LCHOWN])
REPLACE_LINK=0; AC_SUBST([REPLACE_LINK])