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