/* Substitute for and wrapper around <unistd.h>.
- Copyright (C) 2003-2016 Free Software Foundation, Inc.
+ Copyright (C) 2003-2019 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
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/>. */
+ along with this program; if not, see <https://www.gnu.org/licenses/>. */
#ifndef _@GUARD_PREFIX@_UNISTD_H
#endif
@PRAGMA_COLUMNS@
-#ifdef _GL_INCLUDING_UNISTD_H
+#if @HAVE_UNISTD_H@ && defined _GL_INCLUDING_UNISTD_H
/* Special invocation convention:
- On Mac OS X 10.3.9 we have a sequence of nested includes
<unistd.h> -> <signal.h> -> <pthread.h> -> <unistd.h>
#define _@GUARD_PREFIX@_UNISTD_H
/* NetBSD 5.0 mis-defines NULL. Also get size_t. */
-#include <stddef.h>
+/* But avoid namespace pollution on glibc systems. */
+#ifndef __GLIBC__
+# include <stddef.h>
+#endif
/* mingw doesn't define the SEEK_* or *_FILENO macros in <unistd.h>. */
+/* MSVC declares 'unlink' in <stdio.h>, not in <unistd.h>. We must include
+ it before we #define unlink rpl_unlink. */
/* Cygwin 1.7.1 declares symlinkat in <stdio.h>, not in <unistd.h>. */
/* But avoid namespace pollution on glibc systems. */
#if (!(defined SEEK_CUR && defined SEEK_END && defined SEEK_SET) \
+ || ((@GNULIB_UNLINK@ || defined GNULIB_POSIXCHECK) \
+ && (defined _WIN32 && ! defined __CYGWIN__)) \
|| ((@GNULIB_SYMLINKAT@ || defined GNULIB_POSIXCHECK) \
&& defined __CYGWIN__)) \
&& ! defined __GLIBC__
# include <stdio.h>
#endif
-/* Cygwin 1.7.1 declares unlinkat in <fcntl.h>, not in <unistd.h>. */
+/* Cygwin 1.7.1 and Android 4.3 declare unlinkat in <fcntl.h>, not in
+ <unistd.h>. */
/* But avoid namespace pollution on glibc systems. */
-#if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) && defined __CYGWIN__ \
+#if (@GNULIB_UNLINKAT@ || defined GNULIB_POSIXCHECK) \
+ && (defined __CYGWIN__ || defined __ANDROID__) \
&& ! defined __GLIBC__
# include <fcntl.h>
#endif
lseek(), read(), unlink(), write() in <io.h>. */
#if ((@GNULIB_CHDIR@ || @GNULIB_GETCWD@ || @GNULIB_RMDIR@ \
|| defined GNULIB_POSIXCHECK) \
- && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
+ && (defined _WIN32 && ! defined __CYGWIN__))
# include <io.h> /* mingw32, mingw64 */
# include <direct.h> /* mingw64, MSVC 9 */
#elif (@GNULIB_CLOSE@ || @GNULIB_DUP@ || @GNULIB_DUP2@ || @GNULIB_ISATTY@ \
|| @GNULIB_LSEEK@ || @GNULIB_READ@ || @GNULIB_UNLINK@ || @GNULIB_WRITE@ \
|| defined GNULIB_POSIXCHECK) \
- && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
+ && (defined _WIN32 && ! defined __CYGWIN__)
# include <io.h>
#endif
# include <netdb.h>
#endif
+/* Android 4.3 declares fchownat in <sys/stat.h>, not in <unistd.h>. */
+/* But avoid namespace pollution on glibc systems. */
+#if (@GNULIB_FCHOWNAT@ || defined GNULIB_POSIXCHECK) && defined __ANDROID__ \
+ && !defined __GLIBC__
+# include <sys/stat.h>
+#endif
+
/* MSVC defines off_t in <sys/types.h>.
May also define off_t to a 64-bit type on native Windows. */
-#if !@HAVE_UNISTD_H@ || @WINDOWS_64_BIT_OFF_T@
-/* Get off_t. */
+/* But avoid namespace pollution on glibc systems. */
+#ifndef __GLIBC__
+/* Get off_t, ssize_t. */
# include <sys/types.h>
#endif
-#if (@GNULIB_READ@ || @GNULIB_WRITE@ \
- || @GNULIB_READLINK@ || @GNULIB_READLINKAT@ \
- || @GNULIB_PREAD@ || @GNULIB_PWRITE@ || defined GNULIB_POSIXCHECK)
-/* Get ssize_t. */
-# include <sys/types.h>
-#endif
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
+
+/* The definition of _GL_ARG_NONNULL is copied here. */
-/* Get getopt(), optarg, optind, opterr, optopt.
- But avoid namespace pollution on glibc systems. */
-#if @GNULIB_UNISTD_H_GETOPT@ && !defined __GLIBC__ && !defined _GL_SYSTEM_GETOPT
-# define __need_getopt
-# include <getopt.h>
+/* The definition of _GL_WARN_ON_USE is copied here. */
+
+
+/* Get getopt(), optarg, optind, opterr, optopt. */
+#if @GNULIB_UNISTD_H_GETOPT@ && !defined _GL_SYSTEM_GETOPT
+# include <getopt-cdefs.h>
+# include <getopt-pfx-core.h>
#endif
#ifndef _GL_INLINE_HEADER_BEGIN
# define _GL_UNISTD_INLINE _GL_INLINE
#endif
-/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
-
-/* The definition of _GL_ARG_NONNULL is copied here. */
-
-/* The definition of _GL_WARN_ON_USE is copied here. */
-
-
/* Hide some function declarations from <winsock2.h>. */
#if @GNULIB_GETHOSTNAME@ && @UNISTD_H_HAVE_WINSOCK2_H@
/* Declare overridden functions. */
-#if defined GNULIB_POSIXCHECK
+#if @GNULIB_ACCESS@
+# if @REPLACE_ACCESS@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef access
+# define access rpl_access
+# endif
+_GL_FUNCDECL_RPL (access, int, (const char *file, int mode)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (access, int, (const char *file, int mode));
+# else
+_GL_CXXALIAS_SYS (access, int, (const char *file, int mode));
+# endif
+_GL_CXXALIASWARN (access);
+#elif defined GNULIB_POSIXCHECK
+# undef access
+# if HAVE_RAW_DECL_ACCESS
/* The access() function is a security risk. */
-_GL_WARN_ON_USE (access, "the access function is a security risk - "
+_GL_WARN_ON_USE (access, "access does not always support X_OK - "
+ "use gnulib module access for portability; "
+ "also, this function is a security risk - "
"use the gnulib module faccessat instead");
+# endif
#endif
to GID (if GID is not -1). Follow symbolic links.
Return 0 if successful, otherwise -1 and errno set.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html. */
# if @REPLACE_CHOWN@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef chown
#endif
+#if @GNULIB_COPY_FILE_RANGE@
+# if !@HAVE_COPY_FILE_RANGE@
+_GL_FUNCDECL_SYS (copy_file_range, ssize_t, (int ifd, off_t *ipos,
+ int ofd, off_t *opos,
+ size_t len, unsigned flags));
+_GL_CXXALIAS_SYS (copy_file_range, ssize_t, (int ifd, off_t *ipos,
+ int ofd, off_t *opos,
+ size_t len, unsigned flags));
+# endif
+_GL_CXXALIASWARN (copy_file_range);
+#elif defined GNULIB_POSIXCHECK
+/* Assume copy_file_range is always declared. */
+_GL_WARN_ON_USE (copy_file_range,
+ "copy_file_range is unportable - "
+ "use gnulib module copy_file_range for portability");
+#endif
+
+
#if @GNULIB_DUP@
# if @REPLACE_DUP@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
NEWFD = OLDFD, otherwise close NEWFD first if it is open.
Return newfd if successful, otherwise -1 and errno set.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>. */
# if @REPLACE_DUP2@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define dup2 rpl_dup2
Close NEWFD first if it is open.
Return newfd if successful, otherwise -1 and errno set.
See the Linux man page at
- <http://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>. */
+ <https://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html>. */
# if @HAVE_DUP3@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define dup3 rpl_dup3
#if @GNULIB_ENVIRON@
+# if defined __CYGWIN__ && !defined __i386__
+/* The 'environ' variable is defined in a DLL. Therefore its declaration needs
+ the '__declspec(dllimport)' attribute, but the system's <unistd.h> lacks it.
+ This leads to a link error on 64-bit Cygwin when the option
+ -Wl,--disable-auto-import is in use. */
+_GL_EXTERN_C __declspec(dllimport) char **environ;
+# endif
# if !@HAVE_DECL_ENVIRON@
/* Set of environment variables and values. An array of strings of the form
"VARIABLE=VALUE", terminated with a NULL. */
#elif defined GNULIB_POSIXCHECK
# if HAVE_RAW_DECL_ENVIRON
_GL_UNISTD_INLINE char ***
+_GL_WARN_ON_USE_ATTRIBUTE ("environ is unportable - "
+ "use gnulib module environ for portability")
rpl_environ (void)
{
return &environ;
}
-_GL_WARN_ON_USE (rpl_environ, "environ is unportable - "
- "use gnulib module environ for portability");
# undef environ
# define environ (*rpl_environ ())
# endif
#if @GNULIB_FACCESSAT@
-# if !@HAVE_FACCESSAT@
+# if @REPLACE_FACCESSAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef faccessat
+# define faccessat rpl_faccessat
+# endif
+_GL_FUNCDECL_RPL (faccessat, int,
+ (int fd, char const *name, int mode, int flag)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (faccessat, int,
+ (int fd, char const *name, int mode, int flag));
+# else
+# if !@HAVE_FACCESSAT@
_GL_FUNCDECL_SYS (faccessat, int,
(int fd, char const *file, int mode, int flag)
_GL_ARG_NONNULL ((2)));
-# endif
+# endif
_GL_CXXALIAS_SYS (faccessat, int,
(int fd, char const *file, int mode, int flag));
+# endif
_GL_CXXALIASWARN (faccessat);
#elif defined GNULIB_POSIXCHECK
# undef faccessat
the given file descriptor is open.
Return 0 if successful, otherwise -1 and errno set.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>. */
# if ! @HAVE_FCHDIR@
_GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
/* Synchronize changes to a file.
Return 0 if successful, otherwise -1 and errno set.
See POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>. */
# if !@HAVE_FDATASYNC@ || !@HAVE_DECL_FDATASYNC@
_GL_FUNCDECL_SYS (fdatasync, int, (int fd));
# endif
/* Synchronize changes, including metadata, to a file.
Return 0 if successful, otherwise -1 and errno set.
See POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>. */
# if !@HAVE_FSYNC@
_GL_FUNCDECL_SYS (fsync, int, (int fd));
# endif
/* Change the size of the file to which FD is opened to become equal to LENGTH.
Return 0 if successful, otherwise -1 and errno set.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>. */
# if @REPLACE_FTRUNCATE@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef ftruncate
Return BUF if successful, or NULL if the directory couldn't be determined
or SIZE was too small.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
+ <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
# if !@HAVE_GETDTABLESIZE@
_GL_FUNCDECL_SYS (getdtablesize, int, (void));
# endif
-_GL_CXXALIAS_SYS (getdtablesize, int, (void));
+/* Need to cast, because on AIX, the parameter list is
+ (...). */
+_GL_CXXALIAS_SYS_CAST (getdtablesize, int, (void));
# endif
_GL_CXXALIASWARN (getdtablesize);
#elif defined GNULIB_POSIXCHECK
/* Returns the user's login name, or NULL if it cannot be found. Upon error,
returns NULL with errno set.
- See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+ See <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getlogin.html>.
Most programs don't need to use this function, because the information is
available through environment variables:
${LOGNAME-$USER} on Unix platforms,
$USERNAME on native Windows platforms.
*/
-# if !@HAVE_GETLOGIN@
+# if !@HAVE_DECL_GETLOGIN@
_GL_FUNCDECL_SYS (getlogin, char *, (void));
# endif
_GL_CXXALIAS_SYS (getlogin, char *, (void));
the case that the login name cannot be found but no specific error is
provided (this case is hopefully rare but is left open by the POSIX spec).
- See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+ See <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getlogin.html>.
Most programs don't need to use this function, because the information is
available through environment variables:
_GL_FUNCDECL_RPL (getpagesize, int, (void));
_GL_CXXALIAS_RPL (getpagesize, int, (void));
# else
+/* On HP-UX, getpagesize exists, but it is not declared in <unistd.h> even if
+ the compiler options -D_HPUX_SOURCE -D_XOPEN_SOURCE=600 are used. */
+# if defined __hpux
+_GL_FUNCDECL_SYS (getpagesize, int, (void));
+# endif
# if !@HAVE_GETPAGESIZE@
# if !defined getpagesize
/* This is for POSIX systems. */
#endif
+#if @GNULIB_GETPASS@
+/* Function getpass() from module 'getpass':
+ Read a password from /dev/tty or stdin.
+ Function getpass() from module 'getpass-gnu':
+ Read a password of arbitrary length from /dev/tty or stdin. */
+# if @REPLACE_GETPASS@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef getpass
+# define getpass rpl_getpass
+# endif
+_GL_FUNCDECL_RPL (getpass, char *, (const char *prompt)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (getpass, char *, (const char *prompt));
+# else
+# if !@HAVE_GETPASS@
+_GL_FUNCDECL_SYS (getpass, char *, (const char *prompt)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (getpass, char *, (const char *prompt));
+# endif
+_GL_CXXALIASWARN (getpass);
+#elif defined GNULIB_POSIXCHECK
+# undef getpass
+# if HAVE_RAW_DECL_GETPASS
+_GL_WARN_ON_USE (getpass, "getpass is unportable - "
+ "use gnulib module getpass or getpass-gnu for portability");
+# endif
+#endif
+
+
#if @GNULIB_GETUSERSHELL@
/* Return the next valid login shell on the system, or NULL when the end of
the list has been reached. */
to GID (if GID is not -1). Do not follow symbolic links.
Return 0 if successful, otherwise -1 and errno set.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>. */
# if @REPLACE_LCHOWN@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef lchown
/* Create a new hard link for an existing file.
Return 0 if successful, otherwise -1 and errno set.
See POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>. */
# if @REPLACE_LINK@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define link rpl_link
/* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
Return the new offset if successful, otherwise -1 and errno set.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>. */
# if @REPLACE_LSEEK@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define lseek rpl_lseek
Store the read-end as fd[0] and the write-end as fd[1].
Return 0 upon success, or -1 with errno set upon failure.
See also the Linux man page at
- <http://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>. */
+ <https://www.kernel.org/doc/man-pages/online/pages/man2/pipe2.2.html>. */
# if @HAVE_PIPE2@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define pipe2 rpl_pipe2
Return the number of bytes placed into BUF if successful, otherwise
set errno and return -1. 0 indicates EOF.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>. */
# if @REPLACE_PREAD@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef pread
Return the number of bytes written if successful, otherwise
set errno and return -1. 0 indicates nothing written. See the
POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>. */
# if @REPLACE_PWRITE@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef pwrite
#if @GNULIB_READ@
/* Read up to COUNT bytes from file descriptor FD into the buffer starting
at BUF. See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>. */
# if @REPLACE_READ@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef read
bytes of it into BUF. Return the number of bytes placed into BUF if
successful, otherwise -1 and errno set.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>. */
# if @REPLACE_READLINK@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define readlink rpl_readlink
/* Pause the execution of the current thread for N seconds.
Returns the number of seconds left to sleep.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>. */
# if @REPLACE_SLEEP@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef sleep
#endif
+#if @GNULIB_TRUNCATE@
+/* Change the size of the file designated by FILENAME to become equal to LENGTH.
+ Return 0 if successful, otherwise -1 and errno set.
+ See the POSIX:2008 specification
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/truncate.html>. */
+# if @REPLACE_TRUNCATE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef truncate
+# define truncate rpl_truncate
+# endif
+_GL_FUNCDECL_RPL (truncate, int, (const char *filename, off_t length)
+ _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (truncate, int, (const char *filename, off_t length));
+# else
+# if !@HAVE_DECL_TRUNCATE@
+_GL_FUNCDECL_SYS (truncate, int, (const char *filename, off_t length)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (truncate, int, (const char *filename, off_t length));
+# endif
+_GL_CXXALIASWARN (truncate);
+#elif defined GNULIB_POSIXCHECK
+# undef truncate
+# if HAVE_RAW_DECL_TRUNCATE
+_GL_WARN_ON_USE (truncate, "truncate is unportable - "
+ "use gnulib module truncate for portability");
+# endif
+#endif
+
+
#if @GNULIB_TTYNAME_R@
/* Store at most BUFLEN characters of the pathname of the terminal FD is
open on in BUF. Return 0 on success, otherwise an error number. */
/* Pause the execution of the current thread for N microseconds.
Returns 0 on completion, or -1 on range error.
See the POSIX:2001 specification
- <http://www.opengroup.org/susv3xsh/usleep.html>. */
+ <https://pubs.opengroup.org/onlinepubs/009695399/functions/usleep.html>. */
# if @REPLACE_USLEEP@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef usleep
# if !@HAVE_USLEEP@
_GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
# endif
-_GL_CXXALIAS_SYS (usleep, int, (useconds_t n));
+/* Need to cast, because on Haiku, the first parameter is
+ unsigned int n. */
+_GL_CXXALIAS_SYS_CAST (usleep, int, (useconds_t n));
# endif
_GL_CXXALIASWARN (usleep);
#elif defined GNULIB_POSIXCHECK
#if @GNULIB_WRITE@
/* Write up to COUNT bytes starting at BUF to file descriptor FD.
See the POSIX:2008 specification
- <http://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>. */
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>. */
# if @REPLACE_WRITE@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef write
projects / deliverable / binutils-gdb.git / blobdiff