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| author | Eric Blake <eblake@redhat.com> | 2010-12-10 15:18:38 -0700 |
|---|---|---|
| committer | Eric Blake <eblake@redhat.com> | 2010-12-10 15:42:08 -0700 |
| commit | e2f1471b021a285916339a73bc12c6b44dbf9a76 (patch) | |
| tree | cb5e67bf0c23e2b9cb3b421cdf6414377807212a /lib/unistd.in.h | |
| parent | 0de2016ec335422b91764e2c1430d37c5eb47874 (diff) | |
| download | gnulib-e2f1471b021a285916339a73bc12c6b44dbf9a76.tar.gz | |
pipe-posix: new module
* modules/pipe-posix: New file.
* m4/unistd_h.m4 (gl_UNISTD_H_DEFAULTS): Set default.
(gl_UNISTD_H): Check for declaration.
* modules/unistd (Makefile.am): Substitute it.
* lib/unistd.in.h (pipe): Provide it for mingw.
* doc/posix-functions/pipe.texi (pipe): Update documentation.
* MODULES.html.sh (File descriptor based Input/Output): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'lib/unistd.in.h')
| -rw-r--r-- | lib/unistd.in.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/lib/unistd.in.h b/lib/unistd.in.h index 4834e3749d..571afa1ba9 100644 --- a/lib/unistd.in.h +++ b/lib/unistd.in.h @@ -82,10 +82,14 @@ # include <stdlib.h> #endif -/* mingw declares getcwd in <io.h>, not in <unistd.h>. */ -#if ((@GNULIB_GETCWD@ || defined GNULIB_POSIXCHECK) \ +/* mingw declares getcwd in <io.h>, not in <unistd.h>. It also provides + _pipe in <io.h>, but that requires _O_BINARY from <fcntl.h>. */ +#if ((@GNULIB_GETCWD@ || @GNULIB_PIPE@ || defined GNULIB_POSIXCHECK) \ && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)) # include <io.h> +# if @GNULIB_PIPE@ +# include <fcntl.h> +# endif #endif /* AIX and OSF/1 5.1 declare getdomainname in <netdb.h>, not in <unistd.h>. */ @@ -972,6 +976,22 @@ _GL_WARN_ON_USE (lseek, "lseek does not fail with ESPIPE on pipes on some " #endif +#if @GNULIB_PIPE@ +/* Create a pipe, defaulting to O_BINARY mode. + 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. */ +# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ +# define pipe(fd) _pipe (fd, 4096, _O_BINARY) +# endif +#elif defined GNULIB_POSIXCHECK +# undef pipe +# if HAVE_RAW_DECL_PIPE +_GL_WARN_ON_USE (pipe, "pipe is unportable - " + "use gnulib module pipe for portability"); +# endif +#endif + + #if @GNULIB_PIPE2@ /* Create a pipe, applying the given flags when opening the read-end of the pipe and the write-end of the pipe. |