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|
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -9,6 +9,99 @@
#include "libbb.h"
#include "modutils.h"
+#ifndef CONFIG_FEATURE_2_4_MODULES
+#include <sys/mman.h>
+#include <asm/unistd.h>
+#include <sys/syscall.h>
+#include <sys/utsname.h>
+#endif
+
+static char *g_filename = NULL;
+
+static int FAST_FUNC check_module_name_match(const char *filename, struct stat *statbuf,
+ void *userdata, int depth)
+{
+ char *fullname = (char *) userdata;
+ char *tmp;
+
+ if (fullname[0] == '\0')
+ return FALSE;
+
+ tmp = bb_get_last_path_component_nostrip(filename);
+ if (strcmp(tmp, fullname) == 0) {
+ /* Stop searching if we find a match */
+ g_filename = xstrdup(filename);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static int find_module(char *filename)
+{
+ char *module_dir, real_module_dir[FILENAME_MAX];
+ int len, slen, ret = ENOENT, k_version;
+ struct utsname myuname;
+ const char *suffix;
+ struct stat st;
+
+ /* check the kernel version */
+ if ((uname(&myuname) != 0) || (myuname.release[0] != '2'))
+ return EINVAL;
+
+ k_version = myuname.release[2] - '0';
+#if ENABLE_FEATURE_2_4_MODULES
+ if (k_version <= 4)
+ suffix = ".o";
+ else
+#endif
+ suffix = ".ko";
+
+ len = strlen(filename);
+ slen = strlen(suffix);
+
+ /* check for suffix and absolute path first */
+ if ((len < slen + 2) || (strcmp(filename + len - slen, suffix) != 0)) {
+ filename = xasprintf("%s%s", filename, suffix);
+ } else {
+ filename = strdup(filename);
+ if ((stat(filename, &st) == 0) && S_ISREG(st.st_mode)) {
+ g_filename = filename;
+ return 0;
+ }
+ free(filename);
+ return ENOENT;
+ }
+
+ /* next: scan /lib/modules/<release> */
+ /* Jump through hoops in case /lib/modules/`uname -r`
+ * is a symlink. We do not want recursive_action to
+ * follow symlinks, but we do want to follow the
+ * /lib/modules/`uname -r` dir, So resolve it ourselves
+ * if it is a link... */
+ module_dir = concat_path_file(CONFIG_DEFAULT_MODULES_DIR, myuname.release);
+ if (realpath(module_dir, real_module_dir) != NULL) {
+ free(module_dir);
+ module_dir = real_module_dir;
+ }
+
+ recursive_action(module_dir, ACTION_RECURSE,
+ check_module_name_match, 0, filename, 0);
+
+ /* Check if we have a complete path */
+ if (g_filename == NULL)
+ goto done;
+
+ if ((stat(g_filename, &st) == 0) && S_ISREG(st.st_mode))
+ ret = 0;
+ else
+ free(g_filename);
+
+done:
+ free(filename);
+
+ return ret;
+}
int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int insmod_main(int argc UNUSED_PARAM, char **argv)
@@ -25,9 +118,14 @@ int insmod_main(int argc UNUSED_PARAM, c
if (!filename)
bb_show_usage();
- rc = bb_init_module(filename, parse_cmdline_module_options(argv));
+ rc = find_module(filename);
+ if (rc || (g_filename == NULL))
+ goto done;
+
+ rc = bb_init_module(g_filename, parse_cmdline_module_options(argv));
if (rc)
bb_error_msg("cannot insert '%s': %s", filename, moderror(rc));
-
+ free (g_filename);
+done:
return rc;
}
|
