97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
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/*
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* Copyright 1999-2008 by Marco d'Itri <md@linux.it>.
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*
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* do_nofail and merge_args come from the module-init-tools package.
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* Copyright 2001 by Rusty Russell.
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* Copyright 2002, 2003 by Rusty Russell, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/* for strdup */
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#define _XOPEN_SOURCE 500
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/* System library */
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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/* Application-specific */
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#include "utils.h"
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void *do_nofail(void *ptr, const char *file, const int line)
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{
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if (ptr)
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return ptr;
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err_quit("Memory allocation failure at %s:%d.", file, line);
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}
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/* Prepend options from a string. */
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char **merge_args(char *args, char *argv[], int *argc)
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{
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char *arg, *argstring;
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char **newargs = NULL;
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unsigned int i, num_env = 0;
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if (!args)
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return argv;
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argstring = NOFAIL(strdup(args));
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for (arg = strtok(argstring, " "); arg; arg = strtok(NULL, " ")) {
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num_env++;
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newargs = NOFAIL(realloc(newargs,
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sizeof(newargs[0]) * (num_env + *argc + 1)));
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newargs[num_env] = arg;
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}
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if (!newargs)
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return argv;
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/* Append commandline args */
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newargs[0] = argv[0];
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for (i = 1; i <= *argc; i++)
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newargs[num_env + i] = argv[i];
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*argc += num_env;
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return newargs;
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}
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/* Error routines */
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void err_sys(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, ": %s\n", strerror(errno));
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va_end(ap);
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exit(2);
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}
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void err_quit(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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fputs("\n", stderr);
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va_end(ap);
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exit(2);
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}
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