mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-10 23:30:07 +00:00
8d33466fca
2005-01-19 Roland McGrath <roland@redhat.com> [BZ #681] * sunrpc/openchild.c (_openchild): Use NULL instead of 0 for trailing argument to execlp. Reported by Marcus Meissner <meissner@suse.de>.
112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1988 by Sun Microsystems, Inc.
|
|
*/
|
|
|
|
/*
|
|
* Open two pipes to a child process, one for reading, one for writing.
|
|
* The pipes are accessed by FILE pointers. This is NOT a public
|
|
* interface, but for internal use only!
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/clnt.h>
|
|
|
|
#ifdef USE_IN_LIBIO
|
|
# include <libio/iolibio.h>
|
|
# define fflush(s) INTUSE(_IO_fflush) (s)
|
|
# define __fdopen(fd,m) INTUSE(_IO_fdopen) (fd,m)
|
|
#endif
|
|
|
|
/*
|
|
* returns pid, or -1 for failure
|
|
*/
|
|
int
|
|
_openchild (const char *command, FILE ** fto, FILE ** ffrom)
|
|
{
|
|
int i;
|
|
int pid;
|
|
int pdto[2];
|
|
int pdfrom[2];
|
|
|
|
if (__pipe (pdto) < 0)
|
|
goto error1;
|
|
if (__pipe (pdfrom) < 0)
|
|
goto error2;
|
|
switch (pid = __fork ())
|
|
{
|
|
case -1:
|
|
goto error3;
|
|
|
|
case 0:
|
|
/*
|
|
* child: read from pdto[0], write into pdfrom[1]
|
|
*/
|
|
__close (0);
|
|
__dup (pdto[0]);
|
|
__close (1);
|
|
__dup (pdfrom[1]);
|
|
fflush (stderr);
|
|
for (i = _rpc_dtablesize () - 1; i >= 3; i--)
|
|
__close (i);
|
|
fflush (stderr);
|
|
execlp (command, command, NULL);
|
|
perror ("exec");
|
|
_exit (~0);
|
|
|
|
default:
|
|
/*
|
|
* parent: write into pdto[1], read from pdfrom[0]
|
|
*/
|
|
*fto = __fdopen (pdto[1], "w");
|
|
__close (pdto[0]);
|
|
*ffrom = __fdopen (pdfrom[0], "r");
|
|
__close (pdfrom[1]);
|
|
break;
|
|
}
|
|
return pid;
|
|
|
|
/*
|
|
* error cleanup and return
|
|
*/
|
|
error3:
|
|
__close (pdfrom[0]);
|
|
__close (pdfrom[1]);
|
|
error2:
|
|
__close (pdto[0]);
|
|
__close (pdto[1]);
|
|
error1:
|
|
return -1;
|
|
}
|