diff options
Diffstat (limited to 'package/busybox/patches/470-insmod_search.patch')
| -rw-r--r-- | package/busybox/patches/470-insmod_search.patch | 488 |
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; ++} |