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499 lines
12 KiB
499 lines
12 KiB
Index: busybox-1.7.2/modutils/insmod.c
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===================================================================
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--- busybox-1.7.2.orig/modutils/insmod.c 2007-10-08 22:22:17.132454529 +0200
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+++ busybox-1.7.2/modutils/insmod.c 2007-10-08 22:29:04.267655851 +0200
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@@ -61,19 +61,110 @@
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#include "libbb.h"
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#include <libgen.h>
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#include <sys/utsname.h>
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+#if ENABLE_FEATURE_2_6_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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#if !ENABLE_FEATURE_2_4_MODULES && !ENABLE_FEATURE_2_6_MODULES
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#undef ENABLE_FEATURE_2_4_MODULES
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#define ENABLE_FEATURE_2_4_MODULES 1
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#endif
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-#if !ENABLE_FEATURE_2_4_MODULES
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-#define insmod_ng_main insmod_main
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+#if ENABLE_FEATURE_2_4_MODULES
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+int insmod_main_24(int argc, char **argv);
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#endif
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-
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#if ENABLE_FEATURE_2_6_MODULES
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-extern int insmod_ng_main( int argc, char **argv);
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+int insmod_main_26(int argc, char **argv);
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#endif
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+int insmod_main(int argc, char **argv);
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+
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+static char *g_filename = NULL;
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+#define _PATH_MODULES "/lib/modules"
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+
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+static int 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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+
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+ if (fullname[0] == '\0')
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+ return FALSE;
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+ else {
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+ char *tmp, *tmp1 = xstrdup(filename);
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+ tmp = bb_get_last_path_component(tmp1);
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+ if (strcmp(tmp, fullname) == 0) {
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+ free(tmp1);
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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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+ free(tmp1);
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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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+ return 0;
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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(_PATH_MODULES, 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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#if ENABLE_FEATURE_2_4_MODULES
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@@ -677,7 +768,6 @@
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#endif
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-#define _PATH_MODULES "/lib/modules"
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enum { STRVERSIONLEN = 64 };
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/*======================================================================*/
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@@ -790,37 +880,6 @@
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static int n_ext_modules_used;
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extern int delete_module(const char *);
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-static char *m_filename;
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-static char *m_fullName;
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-
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-
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-/*======================================================================*/
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-
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-
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-static int 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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-
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- if (fullname[0] == '\0')
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- return FALSE;
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- else {
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- char *tmp, *tmp1 = xstrdup(filename);
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- tmp = bb_get_last_path_component(tmp1);
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- if (strcmp(tmp, fullname) == 0) {
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- free(tmp1);
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- /* Stop searching if we find a match */
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- m_filename = xstrdup(filename);
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- return FALSE;
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- }
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- free(tmp1);
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- }
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- return TRUE;
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-}
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-
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-
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-/*======================================================================*/
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-
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static struct obj_file *arch_new_file(void)
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{
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struct arch_file *f;
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@@ -3952,145 +4011,57 @@
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void print_load_map(struct obj_file *f);
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#endif
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-int insmod_main( int argc, char **argv);
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-int insmod_main( int argc, char **argv)
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+int insmod_main_24( int argc, char **argv)
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{
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char *opt_o, *arg1;
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- int len;
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int k_crcs;
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- char *tmp, *tmp1;
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unsigned long m_size;
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ElfW(Addr) m_addr;
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struct obj_file *f;
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- struct stat st;
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- char *m_name = 0;
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- int exit_status = EXIT_FAILURE;
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+ char *tmp = NULL, *m_name = NULL;
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+ int ret = EINVAL;
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int m_has_modinfo;
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#if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
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struct utsname uts_info;
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char m_strversion[STRVERSIONLEN];
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int m_version, m_crcs;
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#endif
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-#if ENABLE_FEATURE_CLEAN_UP
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- FILE *fp = 0;
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-#else
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- FILE *fp;
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-#endif
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- int k_version = 0;
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+ FILE *fp = NULL;
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+ int k_version;
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struct utsname myuname;
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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 (k_version > 4)
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+ return ENOTSUP;
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+
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/* Parse any options */
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getopt32(argv, OPTION_STR, &opt_o);
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arg1 = argv[optind];
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if (option_mask32 & OPT_o) { // -o /* name the output module */
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- free(m_name);
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m_name = xstrdup(opt_o);
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}
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- if (arg1 == NULL) {
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+ if (arg1 == NULL)
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bb_show_usage();
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- }
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-
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- /* Grab the module name */
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- tmp1 = xstrdup(arg1);
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- tmp = basename(tmp1);
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- len = strlen(tmp);
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-
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- if (uname(&myuname) == 0) {
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- if (myuname.release[0] == '2') {
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- k_version = myuname.release[2] - '0';
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- }
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- }
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-
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-#if ENABLE_FEATURE_2_6_MODULES
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- if (k_version > 4 && len > 3 && tmp[len - 3] == '.'
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- && tmp[len - 2] == 'k' && tmp[len - 1] == 'o'
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- ) {
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- len -= 3;
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- tmp[len] = '\0';
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- } else
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-#endif
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- if (len > 2 && tmp[len - 2] == '.' && tmp[len - 1] == 'o') {
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- len -= 2;
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- tmp[len] = '\0';
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- }
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-
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-#if ENABLE_FEATURE_2_6_MODULES
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- if (k_version > 4)
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- m_fullName = xasprintf("%s.ko", tmp);
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- else
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-#endif
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- m_fullName = xasprintf("%s.o", tmp);
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+ ret = find_module(arg1);
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+ if (ret)
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+ goto out;
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if (!m_name) {
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- m_name = tmp;
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- } else {
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- free(tmp1);
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- tmp1 = 0; /* flag for free(m_name) before exit() */
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+ tmp = xstrdup(arg1);
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+ m_name = basename(tmp);
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}
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- /* Get a filedesc for the module. Check we we have a complete path */
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- if (stat(arg1, &st) < 0 || !S_ISREG(st.st_mode)
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- || (fp = fopen(arg1, "r")) == NULL
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- ) {
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- /* Hmm. Could not open it. First search under /lib/modules/`uname -r`,
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- * but do not error out yet if we fail to find it... */
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- if (k_version) { /* uname succeedd */
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- char *module_dir;
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- char *tmdn;
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- char real_module_dir[FILENAME_MAX];
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-
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- tmdn = concat_path_file(_PATH_MODULES, myuname.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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- if (realpath(tmdn, real_module_dir) == NULL)
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- module_dir = tmdn;
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- else
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- module_dir = real_module_dir;
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- recursive_action(module_dir, ACTION_RECURSE,
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- check_module_name_match, 0, m_fullName, 0);
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- free(tmdn);
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- }
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-
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- /* Check if we have found anything yet */
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- if (m_filename == 0 || ((fp = fopen(m_filename, "r")) == NULL)) {
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- char module_dir[FILENAME_MAX];
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-
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- free(m_filename);
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- m_filename = 0;
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- if (realpath (_PATH_MODULES, module_dir) == NULL)
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- strcpy(module_dir, _PATH_MODULES);
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- /* No module found under /lib/modules/`uname -r`, this
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- * time cast the net a bit wider. Search /lib/modules/ */
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- if (!recursive_action(module_dir, ACTION_RECURSE,
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- check_module_name_match, 0, m_fullName, 0)
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- ) {
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- if (m_filename == 0
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- || ((fp = fopen(m_filename, "r")) == NULL)
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- ) {
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- bb_error_msg("%s: no module by that name found", m_fullName);
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- goto out;
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- }
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- } else
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- bb_error_msg_and_die("%s: no module by that name found", m_fullName);
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- }
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- } else
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- m_filename = xstrdup(arg1);
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-
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- if (flag_verbose)
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- printf("Using %s\n", m_filename);
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-
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-#if ENABLE_FEATURE_2_6_MODULES
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- if (k_version > 4) {
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- argv[optind] = m_filename;
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- optind--;
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- return insmod_ng_main(argc - optind, argv + optind);
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+ fp = fopen(g_filename, "r");
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+ if (!fp) {
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+ ret = errno;
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+ goto out;
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}
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-#endif
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f = obj_load(fp, LOADBITS);
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if (f == NULL)
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@@ -4120,7 +4091,7 @@
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"\t%s was compiled for kernel version %s\n"
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"\twhile this kernel is version %s",
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flag_force_load ? "warning: " : "",
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- m_filename, m_strversion, uts_info.release);
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+ g_filename, m_strversion, uts_info.release);
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if (!flag_force_load)
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goto out;
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}
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@@ -4173,7 +4144,7 @@
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hide_special_symbols(f);
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#if ENABLE_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
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- add_ksymoops_symbols(f, m_filename, m_name);
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+ add_ksymoops_symbols(f, g_filename, m_name);
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#endif /* FEATURE_INSMOD_KSYMOOPS_SYMBOLS */
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new_create_module_ksymtab(f);
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@@ -4220,30 +4191,22 @@
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if (flag_print_load_map)
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print_load_map(f);
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- exit_status = EXIT_SUCCESS;
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-
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+ ret = 0;
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out:
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#if ENABLE_FEATURE_CLEAN_UP
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if (fp)
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fclose(fp);
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- free(tmp1);
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- if (!tmp1)
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+ if (tmp)
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+ free(tmp);
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+ else if (m_name)
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free(m_name);
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- free(m_filename);
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+ free(g_filename);
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#endif
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- return exit_status;
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+ return ret;
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}
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-
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-
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#endif
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-
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#if ENABLE_FEATURE_2_6_MODULES
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-
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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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-
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/* We use error numbers in a loose translation... */
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static const char *moderror(int err)
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{
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@@ -4261,19 +4224,32 @@
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}
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}
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-int insmod_ng_main(int argc, char **argv);
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-int insmod_ng_main(int argc, char **argv)
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+int insmod_main_26(int argc, char **argv)
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{
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- long ret;
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- size_t len;
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+ char *filename, *options;
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+ struct utsname myuname;
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+ int k_version;
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int optlen;
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+ size_t len;
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void *map;
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- char *filename, *options;
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+ long ret = 0;
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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 (k_version <= 4)
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+ return ENOTSUP;
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filename = *++argv;
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if (!filename)
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bb_show_usage();
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+ ret = find_module(filename);
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+ if (ret || (g_filename == NULL))
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+ goto done;
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+
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/* Rest is options */
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options = xzalloc(1);
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optlen = 0;
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@@ -4283,36 +4259,47 @@
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optlen += sprintf(options + optlen, (strchr(*argv,' ') ? "\"%s\" " : "%s "), *argv);
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}
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-#if 0
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- /* Any special reason why mmap? It isn't performace critical... */
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- int fd;
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- struct stat st;
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- unsigned long len;
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- fd = xopen(filename, O_RDONLY);
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- fstat(fd, &st);
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- len = st.st_size;
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- map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
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- if (map == MAP_FAILED) {
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- bb_perror_msg_and_die("cannot mmap '%s'", filename);
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- }
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-
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- /* map == NULL on Blackfin, probably on other MMU-less systems too. Workaround. */
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- if (map == NULL) {
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- map = xmalloc(len);
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- xread(fd, map, len);
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- }
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-#else
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len = MAXINT(ssize_t);
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- map = xmalloc_open_read_close(filename, &len);
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-#endif
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-
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+ map = xmalloc_open_read_close(g_filename, &len);
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ret = syscall(__NR_init_module, map, len, options);
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if (ret != 0) {
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bb_perror_msg_and_die("cannot insert '%s': %s (%li)",
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- filename, moderror(errno), ret);
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+ g_filename, moderror(errno), ret);
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}
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+done:
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+ if (g_filename && (g_filename != filename))
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+ free(g_filename);
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- return 0;
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+ return ret;
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}
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#endif
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+
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+int insmod_main(int argc, char **argv)
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+{
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+ int ret;
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+
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+ g_filename = NULL;
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+#if ENABLE_FEATURE_2_6_MODULES
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+ ret = insmod_main_26(argc, argv);
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+ if (ret != ENOTSUP)
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+ goto done;
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+#endif
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+
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+#if ENABLE_FEATURE_2_4_MODULES
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+ ret = insmod_main_24(argc, argv);
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+ if (ret != ENOTSUP)
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+ goto done;
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+#endif
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+
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+ fprintf(stderr, "Error: Kernel version not supported\n");
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+ return 1;
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+
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+done:
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+ if (ret) {
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+ errno = ret;
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+ bb_perror_msg("Loading module failed");
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+ return ret;
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+ } else
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+ return 0;
|
|
+}
|
|
|