exec/exec_replace.c

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00001 // Copyright 2006 Benedikt Böhm <hollow@gentoo.org>
00002 //
00003 // This program is free software; you can redistribute it and/or modify
00004 // it under the terms of the GNU General Public License as published by
00005 // the Free Software Foundation; either version 2 of the License, or
00006 // (at your option) any later version.
00007 //
00008 // This program is distributed in the hope that it will be useful,
00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00011 // GNU General Public License for more details.
00012 //
00013 // You should have received a copy of the GNU General Public License
00014 // along with this program; if not, write to the
00015 // Free Software Foundation, Inc.,
00016 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00017 
00018 #include <unistd.h>
00019 #include <stdlib.h>
00020 #include <stdarg.h>
00021 #include <errno.h>
00022 
00023 #include "argv.h"
00024 #include "exec.h"
00025 #include "printf.h"
00026 
00027 int exec_replace(const char *fmt, ...)
00028 {
00029         va_list ap;
00030         va_start(ap, fmt);
00031         
00032         char *cmd;
00033         _lucid_vasprintf(&cmd, fmt, ap);
00034         
00035         va_end(ap);
00036         
00037         int argc;
00038         char *argv[EXEC_MAX_ARGV];
00039         
00040         argc = argv_from_str(cmd, argv, EXEC_MAX_ARGV);
00041         
00042         if (argc < 1) {
00043                 free(cmd);
00044                 return errno = EINVAL, -1;
00045         }
00046         
00047         execvp(argv[0], argv);
00048         
00049         /* never get here */
00050         free(cmd);
00051         return -1;
00052 }

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