/* insmod.c: insert a module into the kernel.    Copyright (C) 2001  Rusty Russell.    Copyright (C) 2002  Rusty Russell, IBM Corporation.    This program is free software; you can redistribute it and/or modify    it under the terms of the GNU General Public License as published by    the Free Software Foundation; either version 2 of the License, or    (at your option) any later version.    This program 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 General Public License for more details.    You should have received a copy of the GNU General Public License    along with this program; if not, write to the Free Software    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*/#include <stdio.h>#include <string.h>#include <stdlib.h>#include <unistd.h>#include <fcntl.h>#include <sys/mman.h>#include <sys/types.h>#include <sys/stat.h>#include <unistd.h>#include <errno.h>#include <asm/unistd.h>#include "backwards_compat.c"#define streq(a,b) (strcmp((a),(b)) == 0)extern long init_module(void *, unsigned long, const char *);static void print_usage(const char *progname){	fprintf(stderr, "Usage: %s filename [args]\n", progname);	exit(1);}/* We use error numbers in a loose translation... */static const char *moderror(int err){	switch (err) {	case ENOEXEC:		return "Invalid module format";	case ENOENT:		return "Unknown symbol in module";	case ESRCH:		return "Module has wrong symbol version";	case EINVAL:		return "Invalid parameters";	default:		return strerror(err);	}}static void *grab_file(const char *filename, unsigned long *size){	unsigned int max = 16384;	int ret, fd;	void *buffer = malloc(max);	if (streq(filename, "-"))		fd = dup(STDIN_FILENO);	else		fd = open(filename, O_RDONLY, 0);	if (fd < 0)		return NULL;	*size = 0;	while ((ret = read(fd, buffer + *size, max - *size)) > 0) {		*size += ret;		if (*size == max)			buffer = realloc(buffer, max *= 2);	}	if (ret < 0) {		free(buffer);		buffer = NULL;	}	close(fd);	return buffer;}int main(int argc, char *argv[]){	unsigned int i;	long int ret;	unsigned long len;	void *file;	char *filename, *options = strdup("");	char *progname = argv[0];	if (strstr(argv[0], "insmod.static"))		try_old_version("insmod.static", argv);	else		try_old_version("insmod", argv);	if (argv[1] && (streq(argv[1], "--version") || streq(argv[1], "-V"))) {		puts(PACKAGE " version " VERSION);		exit(0);	}	/* Ignore old options, for backwards compat. */	while (argv[1] && (streq(argv[1], "-p")			   || streq(argv[1], "-s")			   || streq(argv[1], "-f"))) {		argv++;		argc--;	}	filename = argv[1];	if (!filename)		print_usage(progname);	/* Rest is options */	for (i = 2; i < argc; i++) {		options = realloc(options,				  strlen(options) + 2 + strlen(argv[i]) + 2);		/* Spaces handled by "" pairs, but no way of escaping                   quotes */		if (strchr(argv[i], ' '))			strcat(options, "\"");		strcat(options, argv[i]);		if (strchr(argv[i], ' '))			strcat(options, "\"");		strcat(options, " ");	}	file = grab_file(filename, &len);	if (!file) {		fprintf(stderr, "insmod: can't read '%s': %s\n",			filename, strerror(errno));		exit(1);	}	ret = init_module(file, len, options);	if (ret != 0) {		fprintf(stderr, "insmod: error inserting '%s': %li %s\n",			filename, ret, moderror(errno));		exit(1);	}	exit(0);}