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Diffstat (limited to 'libiberty/pex-msdos.c')
-rw-r--r-- | libiberty/pex-msdos.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/libiberty/pex-msdos.c b/libiberty/pex-msdos.c deleted file mode 100644 index d61c129b97f..00000000000 --- a/libiberty/pex-msdos.c +++ /dev/null @@ -1,147 +0,0 @@ -/* Utilities to execute a program in a subprocess (possibly linked by pipes - with other subprocesses), and wait for it. Generic MSDOS specialization. - Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003 - Free Software Foundation, Inc. - -This file is part of the libiberty library. -Libiberty is free software; you can redistribute it and/or -modify it under the terms of the GNU Library General Public -License as published by the Free Software Foundation; either -version 2 of the License, or (at your option) any later version. - -Libiberty is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with libiberty; see the file COPYING.LIB. If not, -write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#include "pex-common.h" - -#include <stdio.h> -#include <errno.h> -#ifdef NEED_DECLARATION_ERRNO -extern int errno; -#endif -#ifdef HAVE_STRING_H -#include <string.h> -#endif -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif - -#include "safe-ctype.h" -#include <process.h> - -/* MSDOS doesn't multitask, but for the sake of a consistent interface - the code behaves like it does. pexecute runs the program, tucks the - exit code away, and returns a "pid". pwait must be called to fetch the - exit code. */ - -/* For communicating information from pexecute to pwait. */ -static int last_pid = 0; -static int last_status = 0; -static int last_reaped = 0; - -int -pexecute (program, argv, this_pname, temp_base, errmsg_fmt, errmsg_arg, flags) - const char *program; - char * const *argv; - const char *this_pname; - const char *temp_base; - char **errmsg_fmt, **errmsg_arg; - int flags; -{ - int rc; - char *scmd, *rf; - FILE *argfile; - int i, el = flags & PEXECUTE_SEARCH ? 4 : 0; - - last_pid++; - if (last_pid < 0) - last_pid = 1; - - if ((flags & PEXECUTE_ONE) != PEXECUTE_ONE) - abort (); - - if (temp_base == 0) - temp_base = choose_temp_base (); - scmd = (char *) xmalloc (strlen (program) + strlen (temp_base) + 6 + el); - rf = scmd + strlen(program) + 2 + el; - sprintf (scmd, "%s%s @%s.gp", program, - (flags & PEXECUTE_SEARCH ? ".exe" : ""), temp_base); - argfile = fopen (rf, "w"); - if (argfile == 0) - { - int errno_save = errno; - free (scmd); - errno = errno_save; - *errmsg_fmt = "cannot open `%s.gp'"; - *errmsg_arg = temp_base; - return -1; - } - - for (i=1; argv[i]; i++) - { - char *cp; - for (cp = argv[i]; *cp; cp++) - { - if (*cp == '"' || *cp == '\'' || *cp == '\\' || ISSPACE (*cp)) - fputc ('\\', argfile); - fputc (*cp, argfile); - } - fputc ('\n', argfile); - } - fclose (argfile); - - rc = system (scmd); - - { - int errno_save = errno; - remove (rf); - free (scmd); - errno = errno_save; - } - - if (rc == -1) - { - *errmsg_fmt = install_error_msg; - *errmsg_arg = (char *)program; - return -1; - } - - /* Tuck the status away for pwait, and return a "pid". */ - last_status = rc << 8; - return last_pid; -} - -/* Use ECHILD if available, otherwise use EINVAL. */ -#ifdef ECHILD -#define PWAIT_ERROR ECHILD -#else -#define PWAIT_ERROR EINVAL -#endif - -int -pwait (pid, status, flags) - int pid; - int *status; - int flags; -{ - /* On MSDOS each pexecute must be followed by its associated pwait. */ - if (pid != last_pid - /* Called twice for the same child? */ - || pid == last_reaped) - { - errno = PWAIT_ERROR; - return -1; - } - /* ??? Here's an opportunity to canonicalize the values in STATUS. - Needed? */ - *status = last_status; - last_reaped = last_pid; - return last_pid; -} |