86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/* epopen.c
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A version of popen that goes through ixsspawn.
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Copyright (C) 1992 Ian Lance Taylor
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This file is part of the Taylor UUCP package.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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The author of the program may be contacted at ian@airs.com or
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c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
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*/
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#include "uucp.h"
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#include "sysdep.h"
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#include <errno.h>
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/* A version of popen that goes through ixsspawn. This actually takes
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an array of arguments rather than a string, and takes a boolean
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read/write value rather than a string. It sets *pipid to the
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process ID of the child. */
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FILE *
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espopen (pazargs, frd, pipid)
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const char **pazargs;
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boolean frd;
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pid_t *pipid;
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{
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int aidescs[3];
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pid_t ipid;
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FILE *eret;
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if (frd)
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{
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aidescs[0] = SPAWN_NULL;
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aidescs[1] = SPAWN_READ_PIPE;
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}
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else
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{
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aidescs[0] = SPAWN_WRITE_PIPE;
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aidescs[1] = SPAWN_NULL;
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}
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aidescs[2] = SPAWN_NULL;
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ipid = ixsspawn (pazargs, aidescs, FALSE, FALSE,
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(const char *) NULL, FALSE, TRUE,
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(const char *) NULL, (const char *) NULL,
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(const char *) NULL);
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if (ipid < 0)
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return NULL;
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if (frd)
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eret = fdopen (aidescs[1], (char *) "r");
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else
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eret = fdopen (aidescs[0], (char *) "w");
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if (eret == NULL)
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{
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int ierr;
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ierr = errno;
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(void) close (frd ? aidescs[1] : aidescs[0]);
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(void) kill (ipid, SIGKILL);
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(void) ixswait ((unsigned long) ipid, (const char *) NULL);
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errno = ierr;
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return NULL;
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}
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*pipid = ipid;
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return eret;
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}
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