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-rw-r--r--package/busybox/patches/470-insmod_search.patch488
1 files changed, 488 insertions, 0 deletions
diff --git a/package/busybox/patches/470-insmod_search.patch b/package/busybox/patches/470-insmod_search.patch
new file mode 100644
index 0000000..26c5650
--- /dev/null
+++ b/package/busybox/patches/470-insmod_search.patch
@@ -0,0 +1,488 @@
+Index: busybox-1.7.2/modutils/insmod.c
+===================================================================
+--- busybox-1.7.2.orig/modutils/insmod.c 2007-09-03 13:48:35.000000000 +0200
++++ busybox-1.7.2/modutils/insmod.c 2007-10-05 01:43:47.686834357 +0200
+@@ -61,19 +61,107 @@
+ #include "libbb.h"
+ #include <libgen.h>
+ #include <sys/utsname.h>
++#if ENABLE_FEATURE_2_6_MODULES
++#include <sys/mman.h>
++#include <asm/unistd.h>
++#include <sys/syscall.h>
++#endif
+
+ #if !ENABLE_FEATURE_2_4_MODULES && !ENABLE_FEATURE_2_6_MODULES
+ #undef ENABLE_FEATURE_2_4_MODULES
+ #define ENABLE_FEATURE_2_4_MODULES 1
+ #endif
+
+-#if !ENABLE_FEATURE_2_4_MODULES
+-#define insmod_ng_main insmod_main
++#if ENABLE_FEATURE_2_4_MODULES
++int insmod_main_24(int argc, char **argv);
+ #endif
+-
+ #if ENABLE_FEATURE_2_6_MODULES
+-extern int insmod_ng_main( int argc, char **argv);
++int insmod_main_26(int argc, char **argv);
+ #endif
++int insmod_main(int argc, char **argv);
++
++static char *g_filename = NULL;
++#define _PATH_MODULES "/lib/modules"
++
++static int check_module_name_match(const char *filename, struct stat *statbuf,
++ void *userdata, int depth)
++{
++ char *fullname = (char *) userdata;
++
++ if (fullname[0] == '\0')
++ return FALSE;
++ else {
++ char *tmp, *tmp1 = xstrdup(filename);
++ tmp = bb_get_last_path_component(tmp1);
++ if (strcmp(tmp, fullname) == 0) {
++ free(tmp1);
++ /* Stop searching if we find a match */
++ g_filename = xstrdup(filename);
++ return FALSE;
++ }
++ free(tmp1);
++ }
++ 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))
++ return 0;
++ }
++
++ /* 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(_PATH_MODULES, 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) {
++ if ((stat(g_filename, &st) == 0) && S_ISREG(st.st_mode))
++ ret = 0;
++ else
++ free(g_filename);
++ }
++ free(filename);
++
++ return ret;
++}
+
+
+ #if ENABLE_FEATURE_2_4_MODULES
+@@ -677,7 +765,6 @@
+ #endif
+
+
+-#define _PATH_MODULES "/lib/modules"
+ enum { STRVERSIONLEN = 64 };
+
+ /*======================================================================*/
+@@ -790,37 +877,6 @@
+ static int n_ext_modules_used;
+ extern int delete_module(const char *);
+
+-static char *m_filename;
+-static char *m_fullName;
+-
+-
+-/*======================================================================*/
+-
+-
+-static int check_module_name_match(const char *filename, struct stat *statbuf,
+- void *userdata, int depth)
+-{
+- char *fullname = (char *) userdata;
+-
+- if (fullname[0] == '\0')
+- return FALSE;
+- else {
+- char *tmp, *tmp1 = xstrdup(filename);
+- tmp = bb_get_last_path_component(tmp1);
+- if (strcmp(tmp, fullname) == 0) {
+- free(tmp1);
+- /* Stop searching if we find a match */
+- m_filename = xstrdup(filename);
+- return FALSE;
+- }
+- free(tmp1);
+- }
+- return TRUE;
+-}
+-
+-
+-/*======================================================================*/
+-
+ static struct obj_file *arch_new_file(void)
+ {
+ struct arch_file *f;
+@@ -3952,33 +4008,35 @@
+ void print_load_map(struct obj_file *f);
+ #endif
+
+-int insmod_main( int argc, char **argv);
+-int insmod_main( int argc, char **argv)
++int insmod_main_24( int argc, char **argv)
+ {
+ char *opt_o, *arg1;
+ int len;
+ int k_crcs;
+- char *tmp, *tmp1;
+ unsigned long m_size;
+ ElfW(Addr) m_addr;
+ struct obj_file *f;
+ struct stat st;
+ char *m_name = 0;
+- int exit_status = EXIT_FAILURE;
++ int ret = EINVAL;
+ int m_has_modinfo;
+ #if ENABLE_FEATURE_INSMOD_VERSION_CHECKING
+ struct utsname uts_info;
+ char m_strversion[STRVERSIONLEN];
+ int m_version, m_crcs;
+ #endif
+-#if ENABLE_FEATURE_CLEAN_UP
+- FILE *fp = 0;
+-#else
+- FILE *fp;
+-#endif
+- int k_version = 0;
++ FILE *fp = NULL;
++ int k_version;
+ struct utsname myuname;
+
++ /* check the kernel version */
++ if ((uname(&myuname) != 0) || (myuname.release[0] != '2'))
++ return EINVAL;
++
++ k_version = myuname.release[2] - '0';
++ if (k_version > 4)
++ return ENOTSUP;
++
+ /* Parse any options */
+ getopt32(argv, OPTION_STR, &opt_o);
+ arg1 = argv[optind];
+@@ -3987,110 +4045,18 @@
+ m_name = xstrdup(opt_o);
+ }
+
+- if (arg1 == NULL) {
++ if (arg1 == NULL)
+ bb_show_usage();
+- }
+-
+- /* Grab the module name */
+- tmp1 = xstrdup(arg1);
+- tmp = basename(tmp1);
+- len = strlen(tmp);
+-
+- if (uname(&myuname) == 0) {
+- if (myuname.release[0] == '2') {
+- k_version = myuname.release[2] - '0';
+- }
+- }
+-
+-#if ENABLE_FEATURE_2_6_MODULES
+- if (k_version > 4 && len > 3 && tmp[len - 3] == '.'
+- && tmp[len - 2] == 'k' && tmp[len - 1] == 'o'
+- ) {
+- len -= 3;
+- tmp[len] = '\0';
+- } else
+-#endif
+- if (len > 2 && tmp[len - 2] == '.' && tmp[len - 1] == 'o') {
+- len -= 2;
+- tmp[len] = '\0';
+- }
+-
+-
+-#if ENABLE_FEATURE_2_6_MODULES
+- if (k_version > 4)
+- m_fullName = xasprintf("%s.ko", tmp);
+- else
+-#endif
+- m_fullName = xasprintf("%s.o", tmp);
+
+- if (!m_name) {
+- m_name = tmp;
+- } else {
+- free(tmp1);
+- tmp1 = 0; /* flag for free(m_name) before exit() */
+- }
+-
+- /* Get a filedesc for the module. Check we we have a complete path */
+- if (stat(arg1, &st) < 0 || !S_ISREG(st.st_mode)
+- || (fp = fopen(arg1, "r")) == NULL
+- ) {
+- /* Hmm. Could not open it. First search under /lib/modules/`uname -r`,
+- * but do not error out yet if we fail to find it... */
+- if (k_version) { /* uname succeedd */
+- char *module_dir;
+- char *tmdn;
+- char real_module_dir[FILENAME_MAX];
+-
+- tmdn = concat_path_file(_PATH_MODULES, myuname.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... */
+- if (realpath(tmdn, real_module_dir) == NULL)
+- module_dir = tmdn;
+- else
+- module_dir = real_module_dir;
+- recursive_action(module_dir, ACTION_RECURSE,
+- check_module_name_match, 0, m_fullName, 0);
+- free(tmdn);
+- }
+-
+- /* Check if we have found anything yet */
+- if (m_filename == 0 || ((fp = fopen(m_filename, "r")) == NULL)) {
+- char module_dir[FILENAME_MAX];
+-
+- free(m_filename);
+- m_filename = 0;
+- if (realpath (_PATH_MODULES, module_dir) == NULL)
+- strcpy(module_dir, _PATH_MODULES);
+- /* No module found under /lib/modules/`uname -r`, this
+- * time cast the net a bit wider. Search /lib/modules/ */
+- if (!recursive_action(module_dir, ACTION_RECURSE,
+- check_module_name_match, 0, m_fullName, 0)
+- ) {
+- if (m_filename == 0
+- || ((fp = fopen(m_filename, "r")) == NULL)
+- ) {
+- bb_error_msg("%s: no module by that name found", m_fullName);
+- goto out;
+- }
+- } else
+- bb_error_msg_and_die("%s: no module by that name found", m_fullName);
+- }
+- } else
+- m_filename = xstrdup(arg1);
+-
+- if (flag_verbose)
+- printf("Using %s\n", m_filename);
++ ret = find_module(arg1);
++ if (ret)
++ goto out;
+
+-#if ENABLE_FEATURE_2_6_MODULES
+- if (k_version > 4) {
+- argv[optind] = m_filename;
+- optind--;
+- return insmod_ng_main(argc - optind, argv + optind);
++ fp = fopen(g_filename, "r");
++ if (!fp) {
++ ret = errno;
++ goto out;
+ }
+-#endif
+
+ f = obj_load(fp, LOADBITS);
+ if (f == NULL)
+@@ -4120,7 +4086,7 @@
+ "\t%s was compiled for kernel version %s\n"
+ "\twhile this kernel is version %s",
+ flag_force_load ? "warning: " : "",
+- m_filename, m_strversion, uts_info.release);
++ g_filename, m_strversion, uts_info.release);
+ if (!flag_force_load)
+ goto out;
+ }
+@@ -4173,7 +4139,7 @@
+ hide_special_symbols(f);
+
+ #if ENABLE_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
+- add_ksymoops_symbols(f, m_filename, m_name);
++ add_ksymoops_symbols(f, g_filename, m_name);
+ #endif /* FEATURE_INSMOD_KSYMOOPS_SYMBOLS */
+
+ new_create_module_ksymtab(f);
+@@ -4220,8 +4186,7 @@
+ if (flag_print_load_map)
+ print_load_map(f);
+
+- exit_status = EXIT_SUCCESS;
+-
++ ret = 0;
+ out:
+ #if ENABLE_FEATURE_CLEAN_UP
+ if (fp)
+@@ -4229,21 +4194,13 @@
+ free(tmp1);
+ if (!tmp1)
+ free(m_name);
+- free(m_filename);
++ free(g_filename);
+ #endif
+ return exit_status;
+ }
+-
+-
+ #endif
+
+-
+ #if ENABLE_FEATURE_2_6_MODULES
+-
+-#include <sys/mman.h>
+-#include <asm/unistd.h>
+-#include <sys/syscall.h>
+-
+ /* We use error numbers in a loose translation... */
+ static const char *moderror(int err)
+ {
+@@ -4261,19 +4218,33 @@
+ }
+ }
+
+-int insmod_ng_main(int argc, char **argv);
+-int insmod_ng_main(int argc, char **argv)
++int insmod_main_26(int argc, char **argv)
+ {
+- long ret;
+- size_t len;
++ char *filename, *options;
++ struct utsname myuname;
++ int k_version;
+ int optlen;
++ size_t len;
+ void *map;
+- char *filename, *options;
++ long ret = 0;
++
++ /* check the kernel version */
++ if ((uname(&myuname) != 0) || (myuname.release[0] != '2'))
++ return EINVAL;
++
++ k_version = myuname.release[2] - '0';
++ if (k_version <= 4)
++ return ENOTSUP;
+
+ filename = *++argv;
+ if (!filename)
+ bb_show_usage();
+
++ g_filename = filename;
++ ret = find_module(filename);
++ if (ret)
++ goto done;
++
+ /* Rest is options */
+ options = xzalloc(1);
+ optlen = 0;
+@@ -4283,36 +4254,46 @@
+ optlen += sprintf(options + optlen, (strchr(*argv,' ') ? "\"%s\" " : "%s "), *argv);
+ }
+
+-#if 0
+- /* Any special reason why mmap? It isn't performace critical... */
+- int fd;
+- struct stat st;
+- unsigned long len;
+- fd = xopen(filename, O_RDONLY);
+- fstat(fd, &st);
+- len = st.st_size;
+- map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
+- if (map == MAP_FAILED) {
+- bb_perror_msg_and_die("cannot mmap '%s'", filename);
+- }
+-
+- /* map == NULL on Blackfin, probably on other MMU-less systems too. Workaround. */
+- if (map == NULL) {
+- map = xmalloc(len);
+- xread(fd, map, len);
+- }
+-#else
+ len = MAXINT(ssize_t);
+- map = xmalloc_open_read_close(filename, &len);
+-#endif
+-
++ map = xmalloc_open_read_close(g_filename, &len);
+ ret = syscall(__NR_init_module, map, len, options);
+ if (ret != 0) {
+ bb_perror_msg_and_die("cannot insert '%s': %s (%li)",
+- filename, moderror(errno), ret);
++ g_filename, moderror(errno), ret);
+ }
++done:
++ if (g_filename && (g_filename != filename))
++ free(g_filename);
+
+- return 0;
++ return ret;
+ }
+
+ #endif
++
++int insmod_main(int argc, char **argv)
++{
++ int ret;
++
++#if ENABLE_FEATURE_2_6_MODULES
++ ret = insmod_main_26(argc, argv);
++ if (ret != ENOTSUP)
++ goto done;
++#endif
++
++#if ENABLE_FEATURE_2_4_MODULES
++ ret = insmod_main_24(argc, argv);
++ if (ret != ENOTSUP)
++ goto done;
++#endif
++
++ fprintf(stderr, "Error: Kernel version not supported\n");
++ return 1;
++
++done:
++ if (ret) {
++ errno = ret;
++ bb_perror_msg("Loading module failed");
++ return ret;
++ } else
++ return 0;
++}