+/* vi: set sw=4 ts=4: */
/*
* Mini insmod implementation for busybox
*
#include <sys/syscall.h>
#include <linux/module.h>
+#define _PATH_MODULES "/lib/modules"
+
+#warning "Danger Will Robinson, Danger!!!"
+#warning " "
+#warning "insmod is still under construction. Don't use it."
+#warning " "
+#warning " You have been warned!"
+#warning " "
+
+
/* Some firendly syscalls to cheer everyone's day... */
_syscall2(int, init_module, const char *, name,
- const struct module *, info)
-
+ const struct module *, info)
#ifndef BB_RMMOD
_syscall1(int, delete_module, const char *, name)
#else
#if defined(__i386__) || defined(__m68k__) || defined(__arm__)
/* Jump through hoops to fixup error return codes */
#define __NR__create_module __NR_create_module
-static inline _syscall2(long, _create_module, const char *, name, size_t, size)
+static inline _syscall2(long, _create_module, const char *, name, size_t,
+ size)
unsigned long create_module(const char *name, size_t size)
{
- long ret = _create_module(name, size);
- if (ret == -1 && errno > 125) {
- ret = -errno;
- errno = 0;
- }
- return ret;
+ long ret = _create_module(name, size);
+
+ if (ret == -1 && errno > 125) {
+ ret = -errno;
+ errno = 0;
+ }
+ return ret;
}
#else
_syscall2(unsigned long, create_module, const char *, name, size_t, size)
#endif
+static char m_filename[PATH_MAX + 1] = "\0";
+static char m_fullName[PATH_MAX + 1] = "\0";
+static const char insmod_usage[] =
+ "insmod [OPTION]... MODULE [symbol=value]...\n\n"
+ "Loads the specified kernel modules into the kernel.\n\n"
+ "Options:\n"
+ "\t-f\tForce module to load into the wrong kernel version.\n"
+ "\t-k\tMake module autoclean-able.\n";
-static const char insmod_usage[] =
- "insmod [OPTION]... MODULE [symbol=value]...\n\n"
- "Loads the specified kernel modules into the kernel.\n\n"
- "Options:\n"
- "\t-f\tForce module to load into the wrong kernel version.\n"
- "\t-k\tMake module autoclean-able.\n";
+static int findNamedModule(const char *fileName, struct stat *statbuf)
+{
+ if (m_fullName[0] == '\0')
+ return (FALSE);
+ else {
+ char *tmp = strrchr(fileName, '/');
+
+ if (tmp == NULL)
+ tmp = (char *) fileName;
+ else
+ tmp++;
+ if (check_wildcard_match(tmp, m_fullName) == TRUE) {
+ /* Stop searching if we find a match */
+ memcpy(m_filename, fileName, strlen(fileName));
+ return (FALSE);
+ }
+ }
+ return (TRUE);
+}
extern int insmod_main(int argc, char **argv)
{
- int len;
- char m_name[PATH_MAX];
- char* tmp;
-
+ int len;
+ char *tmp;
+ char m_name[PATH_MAX + 1] = "\0";
+ FILE *fp;
+ if (argc <= 1) {
+ usage(insmod_usage);
+ }
- if (argc<=1) {
- usage( insmod_usage);
- }
+ /* Parse any options */
+ while (--argc > 0 && **(++argv) == '-') {
+ while (*(++(*argv))) {
+ switch (**argv) {
+ case 'f':
+ break;
+ case 'k':
+ break;
+ default:
+ usage(insmod_usage);
+ }
+ }
+ }
- /* Parse any options */
- while (--argc > 0 && **(++argv) == '-') {
- while (*(++(*argv))) {
- switch (**argv) {
- case 'f':
- break;
- case 'k':
- break;
- default:
+ if (argc <= 0)
usage(insmod_usage);
- }
+
+ /* Grab the module name */
+ if ((tmp = strrchr(*argv, '/')) != NULL)
+ tmp++;
+ else
+ tmp = *argv;
+ len = strlen(tmp);
+
+ if (len > 2 && tmp[len - 2] == '.' && tmp[len - 1] == 'o')
+ len -= 2;
+ memcpy(m_name, tmp, len);
+ strcpy(m_fullName, m_name);
+ strcat(m_fullName, ".o");
+
+ /* Get a filedesc for the module */
+ if ((fp = fopen(*argv, "r")) == NULL) {
+ /* Hmpf. Could not open it. Search through _PATH_MODULES to find a module named m_name */
+ if (recursiveAction(_PATH_MODULES, TRUE, FALSE, FALSE,
+ findNamedModule, findNamedModule) == FALSE) {
+ if (m_filename[0] == '\0'
+ || ((fp = fopen(m_filename, "r")) == NULL)) {
+ perror("No module by that name found in " _PATH_MODULES
+ "\n");
+ exit(FALSE);
+ }
+ }
+ } else
+ memcpy(m_filename, *argv, strlen(*argv));
+
+
+ fprintf(stderr, "m_filename='%s'\n", m_filename);
+ fprintf(stderr, "m_name='%s'\n", m_name);
+
+
+ /* TODO: do something roughtly like this... */
+#if 0
+
+ if ((f = obj_load(fp)) == NULL) {
+ perror("Could not load the module\n");
+ exit(FALSE);
}
- }
- if (argc <= 0 )
- usage(insmod_usage);
+ /* Let the module know about the kernel symbols. */
+ add_kernel_symbols(f);
- /* Grab the module name */
- if ((tmp = strrchr(*argv, '/')) != NULL)
- tmp++;
- else
- tmp = *argv;
- len = strlen(tmp);
+ if (!create_this_module(f, m_name)) {
+ perror("Could not create the module\n");
+ exit(FALSE);
+ }
+
+ if (!obj_check_undefineds(f, quiet)) {
+ perror("Undefined symbols in the module\n");
+ exit(FALSE);
+ }
+ obj_allocate_commons(f);
+
+ /* Perse the module's arguments */
+ while (argc-- > 0 && *(argv++) != '\0') {
+ if (!process_module_arguments(f, argc - optind, argv + optind)) {
+ perror("Undefined symbols in the module\n");
+ exit(FALSE);
+ }
+ }
- if (len > 2 && tmp[len - 2] == '.' && tmp[len - 1] == 'o')
- len -= 2;
- memcpy(m_name, tmp, len);
+ /* Find current size of the module */
+ m_size = obj_load_size(f);
- fprintf(stderr, "m_name='%s'\n", m_name);
-
- exit( TRUE);
+ errno = 0;
+ m_addr = create_module(m_name, m_size);
+ switch (errno) {
+ /* yada yada */
+ default:
+ perror("create_module: %m");
+
+ }
+
+#endif
+
+ fclose(fp);
+ exit(TRUE);
}
projects / oweals / busybox.git / blobdiff