diff options
Diffstat (limited to 'sysdeps/posix/pipestream.c')
| -rw-r--r-- | sysdeps/posix/pipestream.c | 48 |
1 files changed, 25 insertions, 23 deletions
diff --git a/sysdeps/posix/pipestream.c b/sysdeps/posix/pipestream.c index 53595f5..539bf43 100644 --- a/sysdeps/posix/pipestream.c +++ b/sysdeps/posix/pipestream.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1992, 1993, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -16,7 +16,6 @@ License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <ansidecl.h> #include <errno.h> #include <stddef.h> #include <signal.h> @@ -43,7 +42,7 @@ struct child original function with the original cookie. */ #define FUNC(type, name, args) \ - static type DEFUN(__CONCAT(child_,name), args, __CONCAT(name,decl)) \ + static type __CONCAT(child_,name) args __CONCAT(name,decl)) \ { \ struct child *c = (struct child *) cookie; \ { \ @@ -52,15 +51,15 @@ struct child } \ } -#define readdecl PTR cookie AND register char *buf AND register size_t n +#define readdecl void *cookie AND register char *buf AND register size_t n FUNC (int, read, (cookie, buf, n)) -#define writedecl PTR cookie AND register CONST char *buf AND register size_t n +#define writedecl void *cookie AND register const char *buf AND register size_t n FUNC (int, write, (cookie, buf, n)) -#define seekdecl PTR cookie AND fpos_t *pos AND int whence +#define seekdecl void *cookie AND fpos_t *pos AND int whence FUNC (int, seek, (cookie, pos, whence)) -#define closedecl PTR cookie +#define closedecl void *cookie FUNC (int, close, (cookie)) -#define filenodecl PTR cookie +#define filenodecl void *cookie FUNC (int, fileno, (cookie)) static const __io_functions child_funcs @@ -69,7 +68,9 @@ static const __io_functions child_funcs /* Open a new stream that is a one-way pipe to a child process running the given shell command. */ FILE * -DEFUN(popen, (command, mode), CONST char *command AND CONST char *mode) +popen (command, mode) + const char *command; + const char *mode; { pid_t pid; int pipedes[2]; @@ -78,12 +79,12 @@ DEFUN(popen, (command, mode), CONST char *command AND CONST char *mode) if (command == NULL || mode == NULL || (*mode != 'r' && *mode != 'w')) { - errno = EINVAL; + __set_errno (EINVAL); return NULL; } /* Create the pipe. */ - if (pipe(pipedes) < 0) + if (pipe (pipedes) < 0) return NULL; /* Fork off the child. */ @@ -100,24 +101,24 @@ DEFUN(popen, (command, mode), CONST char *command AND CONST char *mode) /* We are the child side. Make the write side of the pipe be stdin or the read side be stdout. */ - CONST char *new_argv[4]; + const char *new_argv[4]; if ((*mode == 'w' ? dup2(pipedes[STDIN_FILENO], STDIN_FILENO) : - dup2(pipedes[STDOUT_FILENO], STDOUT_FILENO)) < 0) - _exit(127); + dup2 (pipedes[STDOUT_FILENO], STDOUT_FILENO)) < 0) + _exit (127); /* Close the pipe descriptors. */ - (void) close(pipedes[STDIN_FILENO]); - (void) close(pipedes[STDOUT_FILENO]); + (void) close (pipedes[STDIN_FILENO]); + (void) close (pipedes[STDOUT_FILENO]); /* Exec the shell. */ new_argv[0] = SH_NAME; new_argv[1] = "-c"; new_argv[2] = command; new_argv[3] = NULL; - (void) execve(SH_PATH, (char *CONST *) new_argv, environ); + (void) execve (SH_PATH, (char *CONST *) new_argv, environ); /* Die if it failed. */ - _exit(127); + _exit (127); } /* We are the parent side. */ @@ -180,7 +181,7 @@ DEFUN(popen, (command, mode), CONST char *command AND CONST char *mode) while (dead > 0 && dead != pid); } #endif - errno = save; + __set_errno (save); return NULL; } } @@ -188,15 +189,16 @@ DEFUN(popen, (command, mode), CONST char *command AND CONST char *mode) /* Close a stream opened by popen and return its status. Returns -1 if the stream was not opened by popen. */ int -DEFUN(pclose, (stream), register FILE *stream) +pclose (stream) + register FILE *stream; { struct child *c; pid_t pid, dead; int status; - if (!__validfp(stream) || !stream->__ispipe) + if (!__validfp (stream) || !stream->__ispipe) { - errno = EINVAL; + __set_errno (EINVAL); return -1; } @@ -204,7 +206,7 @@ DEFUN(pclose, (stream), register FILE *stream) pid = c->pid; stream->__cookie = c->cookie; stream->__io_funcs = c->funcs; - free ((PTR) c); + free ((void *) c); stream->__ispipe = 0; if (fclose (stream)) return -1; |