Sync with the latest Gnulib code (d4ec02b3cc)refs/pull/2037/head

1 files changed, 115 insertions, 25 deletions

diff --git a/gl/unistd.in.h b/gl/unistd.in.h
index 4812fdb..b412966 100644
--- a/gl/unistd.in.h
+++ b/gl/unistd.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <unistd.h>.
-   Copyright (C) 2003-2023 Free Software Foundation, Inc.
+   Copyright (C) 2003-2024 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
@@ -40,6 +40,24 @@
 # undef _GL_INCLUDING_UNISTD_H
 #endif
 
+/* Avoid lseek bugs in FreeBSD, macOS <https://bugs.gnu.org/61386>.
+   This bug is fixed after FreeBSD 13; see <https://bugs.freebsd.org/256205>.
+   Use macOS "9999" to stand for a future fixed macOS version.  */
+#if defined __FreeBSD__ && __FreeBSD__ < 14
+# undef SEEK_DATA
+# undef SEEK_HOLE
+#elif defined __APPLE__ && defined __MACH__ && defined SEEK_DATA
+# ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
+#  include <AvailabilityMacros.h>
+# endif
+# if (!defined MAC_OS_X_VERSION_MIN_REQUIRED \
+      || MAC_OS_X_VERSION_MIN_REQUIRED < 99990000)
+#  include <sys/fcntl.h> /* It also defines the two macros.  */
+#  undef SEEK_DATA
+#  undef SEEK_HOLE
+# endif
+#endif
+
 /* Get all possible declarations of gethostname().  */
 #if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@ \
   && !defined _GL_INCLUDING_WINSOCK2_H
@@ -51,6 +69,12 @@
 #if !defined _@GUARD_PREFIX@_UNISTD_H && !defined _GL_INCLUDING_WINSOCK2_H
 #define _@GUARD_PREFIX@_UNISTD_H
 
+/* This file uses _GL_INLINE_HEADER_BEGIN, _GL_INLINE, GNULIB_POSIXCHECK,
+   HAVE_RAW_DECL_*.  */
+#if !_GL_CONFIG_H_INCLUDED
+ #error "Please include config.h first."
+#endif
+
 /* NetBSD 5.0 mis-defines NULL.  Also get size_t.  */
 /* But avoid namespace pollution on glibc systems.  */
 #ifndef __GLIBC__
@@ -152,9 +176,6 @@
 # include <getopt-pfx-core.h>
 #endif
 
-#ifndef _GL_INLINE_HEADER_BEGIN
- #error "Please include config.h first."
-#endif
 _GL_INLINE_HEADER_BEGIN
 #ifndef _GL_UNISTD_INLINE
 # define _GL_UNISTD_INLINE _GL_INLINE
@@ -541,17 +562,22 @@ _GL_CXXALIASWARN (dup2);
    Return newfd if successful, otherwise -1 and errno set.
    See the Linux man page at
    <https://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>.  */
-# if @HAVE_DUP3@
+# if @REPLACE_DUP3@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef dup3
 #   define dup3 rpl_dup3
 #  endif
 _GL_FUNCDECL_RPL (dup3, int, (int oldfd, int newfd, int flags));
 _GL_CXXALIAS_RPL (dup3, int, (int oldfd, int newfd, int flags));
 # else
+#  if !@HAVE_DUP3@
 _GL_FUNCDECL_SYS (dup3, int, (int oldfd, int newfd, int flags));
+#  endif
 _GL_CXXALIAS_SYS (dup3, int, (int oldfd, int newfd, int flags));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (dup3);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef dup3
 # if HAVE_RAW_DECL_DUP3
@@ -870,7 +896,9 @@ _GL_FUNCDECL_SYS (execvpe, int,
 _GL_CXXALIAS_SYS (execvpe, int,
                   (const char *program, char * const *argv, char * const *env));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (execvpe);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef execvpe
 # if HAVE_RAW_DECL_EXECVPE
@@ -925,7 +953,9 @@ _GL_FUNCDECL_SYS (faccessat, int,
 _GL_CXXALIAS_SYS (faccessat, int,
                   (int fd, char const *file, int mode, int flag));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (faccessat);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef faccessat
 # if HAVE_RAW_DECL_FACCESSAT
@@ -941,23 +971,28 @@ _GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
    Return 0 if successful, otherwise -1 and errno set.
    See the POSIX:2008 specification
    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>.  */
-# if ! @HAVE_FCHDIR@
+# if @REPLACE_FCHDIR@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fchdir
+#   define fchdir rpl_fchdir
+#  endif
+_GL_FUNCDECL_RPL (fchdir, int, (int /*fd*/));
+_GL_CXXALIAS_RPL (fchdir, int, (int /*fd*/));
+# else
+#  if !@HAVE_FCHDIR@ || !@HAVE_DECL_FCHDIR@
 _GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
-
+#  endif
+_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
+# endif
+_GL_CXXALIASWARN (fchdir);
+# if @REPLACE_FCHDIR@ || !@HAVE_FCHDIR@
 /* Gnulib internal hooks needed to maintain the fchdir metadata.  */
 _GL_EXTERN_C int _gl_register_fd (int fd, const char *filename)
      _GL_ARG_NONNULL ((2));
 _GL_EXTERN_C void _gl_unregister_fd (int fd);
 _GL_EXTERN_C int _gl_register_dup (int oldfd, int newfd);
 _GL_EXTERN_C const char *_gl_directory_name (int fd);
-
-# else
-#  if !@HAVE_DECL_FCHDIR@
-_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
-#  endif
 # endif
-_GL_CXXALIAS_SYS (fchdir, int, (int /*fd*/));
-_GL_CXXALIASWARN (fchdir);
 #elif defined GNULIB_POSIXCHECK
 # undef fchdir
 # if HAVE_RAW_DECL_FCHDIR
@@ -1002,11 +1037,22 @@ _GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
    Return 0 if successful, otherwise -1 and errno set.
    See POSIX:2008 specification
    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>.  */
-# if !@HAVE_FDATASYNC@ || !@HAVE_DECL_FDATASYNC@
+# if @REPLACE_FDATASYNC@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fdatasync
+#   define fdatasync rpl_fdatasync
+#  endif
+_GL_FUNCDECL_RPL (fdatasync, int, (int fd));
+_GL_CXXALIAS_RPL (fdatasync, int, (int fd));
+# else
+#  if !@HAVE_FDATASYNC@|| !@HAVE_DECL_FDATASYNC@
 _GL_FUNCDECL_SYS (fdatasync, int, (int fd));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (fdatasync, int, (int fd));
+# endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (fdatasync);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef fdatasync
 # if HAVE_RAW_DECL_FDATASYNC
@@ -1053,7 +1099,9 @@ _GL_FUNCDECL_SYS (ftruncate, int, (int fd, off_t length));
 #  endif
 _GL_CXXALIAS_SYS (ftruncate, int, (int fd, off_t length));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (ftruncate);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef ftruncate
 # if HAVE_RAW_DECL_FTRUNCATE
@@ -1070,10 +1118,10 @@ _GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
    or SIZE was too small.
    See the POSIX:2008 specification
    <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
-   Additionally, the gnulib module 'getcwd' guarantees the following GNU
-   extension: If BUF is NULL, an array is allocated with 'malloc'; the array
-   is SIZE bytes long, unless SIZE == 0, in which case it is as big as
-   necessary.  */
+   Additionally, the gnulib module 'getcwd' or 'getcwd-lgpl' guarantees the
+   following GNU extension: If BUF is NULL, an array is allocated with
+   'malloc'; the array is SIZE bytes long, unless SIZE == 0, in which case
+   it is as big as necessary.  */
 # if @REPLACE_GETCWD@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define getcwd rpl_getcwd
@@ -1185,11 +1233,22 @@ _GL_WARN_ON_USE (getdtablesize, "getdtablesize is unportable - "
 
 #if @GNULIB_GETENTROPY@
 /* Fill a buffer with random bytes.  */
-# if !@HAVE_GETENTROPY@
+# if @REPLACE_GETENTROPY@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef getentropy
+#   define getentropy rpl_getentropy
+#  endif
+_GL_FUNCDECL_RPL (getentropy, int, (void *buffer, size_t length));
+_GL_CXXALIAS_RPL (getentropy, int, (void *buffer, size_t length));
+# else
+#  if !@HAVE_GETENTROPY@
 _GL_FUNCDECL_SYS (getentropy, int, (void *buffer, size_t length));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (getentropy, int, (void *buffer, size_t length));
+# endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (getentropy);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef getentropy
 # if HAVE_RAW_DECL_GETENTROPY
@@ -1323,7 +1382,9 @@ _GL_FUNCDECL_SYS (getlogin_r, int, (char *name, size_t size)
                                                      int size.  */
 _GL_CXXALIAS_SYS_CAST (getlogin_r, int, (char *name, size_t size));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (getlogin_r);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef getlogin_r
 # if HAVE_RAW_DECL_GETLOGIN_R
@@ -1661,7 +1722,9 @@ _GL_CXXALIAS_SYS (linkat, int,
                   (int fd1, const char *path1, int fd2, const char *path2,
                    int flag));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (linkat);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef linkat
 # if HAVE_RAW_DECL_LINKAT
@@ -1742,8 +1805,9 @@ _GL_WARN_ON_USE (pipe, "pipe is unportable - "
    Return 0 upon success, or -1 with errno set upon failure.
    See also the Linux man page at
    <https://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>.  */
-# if @HAVE_PIPE2@
+# if @REPLACE_PIPE2@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef pipe2
 #   define pipe2 rpl_pipe2
 #  endif
 _GL_FUNCDECL_RPL (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
@@ -1752,7 +1816,9 @@ _GL_CXXALIAS_RPL (pipe2, int, (int fd[2], int flags));
 _GL_FUNCDECL_SYS (pipe2, int, (int fd[2], int flags) _GL_ARG_NONNULL ((1)));
 _GL_CXXALIAS_SYS (pipe2, int, (int fd[2], int flags));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (pipe2);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef pipe2
 # if HAVE_RAW_DECL_PIPE2
@@ -1787,7 +1853,9 @@ _GL_FUNCDECL_SYS (pread, ssize_t,
 _GL_CXXALIAS_SYS (pread, ssize_t,
                   (int fd, void *buf, size_t bufsize, off_t offset));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (pread);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef pread
 # if HAVE_RAW_DECL_PREAD
@@ -1822,7 +1890,9 @@ _GL_FUNCDECL_SYS (pwrite, ssize_t,
 _GL_CXXALIAS_SYS (pwrite, ssize_t,
                   (int fd, const void *buf, size_t bufsize, off_t offset));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (pwrite);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef pwrite
 # if HAVE_RAW_DECL_PWRITE
@@ -1936,7 +2006,9 @@ _GL_CXXALIAS_SYS (readlinkat, ssize_t,
                   (int fd, char const *restrict file,
                    char *restrict buf, size_t len));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (readlinkat);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef readlinkat
 # if HAVE_RAW_DECL_READLINKAT
@@ -1996,15 +2068,27 @@ _GL_CXXALIASWARN (rmdir);
 
    Platforms with no ability to set the hostname return -1 and set
    errno = ENOSYS.  */
-# if !@HAVE_SETHOSTNAME@ || !@HAVE_DECL_SETHOSTNAME@
+# if @REPLACE_SETHOSTNAME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef sethostname
+#   define sethostname rpl_sethostname
+#  endif
+_GL_FUNCDECL_RPL (sethostname, int, (const char *name, size_t len)
+                                    _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (sethostname, int, (const char *name, size_t len));
+# else
+#  if !@HAVE_SETHOSTNAME@ || !@HAVE_DECL_SETHOSTNAME@
 _GL_FUNCDECL_SYS (sethostname, int, (const char *name, size_t len)
                                     _GL_ARG_NONNULL ((1)));
-# endif
+#  endif
 /* Need to cast, because on Solaris 11 2011-10, Mac OS X 10.5, IRIX 6.5
    and FreeBSD 6.4 the second parameter is int.  On Solaris 11
    2011-10, the first parameter is not const.  */
 _GL_CXXALIAS_SYS_CAST (sethostname, int, (const char *name, size_t len));
+# endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (sethostname);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef sethostname
 # if HAVE_RAW_DECL_SETHOSTNAME
@@ -2113,7 +2197,9 @@ _GL_FUNCDECL_SYS (symlinkat, int,
 _GL_CXXALIAS_SYS (symlinkat, int,
                   (char const *contents, int fd, char const *file));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (symlinkat);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef symlinkat
 # if HAVE_RAW_DECL_SYMLINKAT
@@ -2143,7 +2229,9 @@ _GL_FUNCDECL_SYS (truncate, int, (const char *filename, off_t length)
 #  endif
 _GL_CXXALIAS_SYS (truncate, int, (const char *filename, off_t length));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (truncate);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef truncate
 # if HAVE_RAW_DECL_TRUNCATE
@@ -2173,7 +2261,9 @@ _GL_FUNCDECL_SYS (ttyname_r, int,
 _GL_CXXALIAS_SYS (ttyname_r, int,
                   (int fd, char *buf, size_t buflen));
 # endif
+# if __GLIBC__ >= 2
 _GL_CXXALIASWARN (ttyname_r);
+# endif
 #elif defined GNULIB_POSIXCHECK
 # undef ttyname_r
 # if HAVE_RAW_DECL_TTYNAME_R