diff options
Diffstat (limited to 'package/busybox/patches/470-insmod_search.patch')
| -rw-r--r-- | package/busybox/patches/470-insmod_search.patch | 653 |
1 files changed, 19 insertions, 634 deletions
diff --git a/package/busybox/patches/470-insmod_search.patch b/package/busybox/patches/470-insmod_search.patch index 62619c221..8d4b019c6 100644 --- a/package/busybox/patches/470-insmod_search.patch +++ b/package/busybox/patches/470-insmod_search.patch @@ -1,35 +1,17 @@ --- a/modutils/insmod.c +++ b/modutils/insmod.c -@@ -61,21 +61,117 @@ +@@ -9,6 +9,99 @@ + #include "libbb.h" - #include <libgen.h> - #include <sys/utsname.h> -+#if ENABLE_FEATURE_2_6_MODULES + #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 - - #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 - --/* -- * Big piece of 2.4-specific code -- */ - #if ENABLE_FEATURE_2_4_MODULES -- -+int insmod_main_24(int argc, char **argv); -+#endif - #if ENABLE_FEATURE_2_6_MODULES --static int insmod_ng_main(int argc, char **argv); -+int insmod_main_26(int argc, char **argv); - #endif -+int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; + +static char *g_filename = NULL; -+#define _PATH_MODULES "/lib/modules" + +static int FAST_FUNC check_module_name_match(const char *filename, struct stat *statbuf, + void *userdata, int depth) @@ -92,7 +74,7 @@ + * 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); ++ 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; @@ -112,623 +94,26 @@ + +done: + free(filename); - -+ return ret; -+} -+ -+/* -+ * Big piece of 2.4-specific code -+ */ -+#if ENABLE_FEATURE_2_4_MODULES - #if ENABLE_FEATURE_INSMOD_LOADINKMEM - #define LOADBITS 0 - #else -@@ -184,7 +280,6 @@ static int insmod_ng_main(int argc, char - /* Microblaze */ - #if defined(__microblaze__) - #define USE_SINGLE --#include <linux/elf-em.h> - #define MATCH_MACHINE(x) (x == EM_XILINX_MICROBLAZE) - #define SHT_RELM SHT_RELA - #define Elf32_RelM Elf32_Rela -@@ -452,7 +547,7 @@ enum { - /* The system calls unchanged between 2.0 and 2.1. */ - - unsigned long create_module(const char *, size_t); --int delete_module(const char *module, unsigned int flags); -+int delete_module(const char *); - - - #endif /* module.h */ -@@ -652,7 +747,7 @@ static struct obj_symbol *arch_new_symbo - - static enum obj_reloc arch_apply_relocation(struct obj_file *f, - struct obj_section *targsec, -- /*struct obj_section *symsec,*/ -+ struct obj_section *symsec, - struct obj_symbol *sym, - ElfW(RelM) *rel, ElfW(Addr) value); - -@@ -673,6 +768,7 @@ static int obj_gpl_license(struct obj_fi - #define SPFX "" - #endif - + - enum { STRVERSIONLEN = 64 }; - - /*======================================================================*/ -@@ -788,28 +884,6 @@ static char *m_filename; - static char *m_fullName; - - --/*======================================================================*/ -- -- --static int FAST_FUNC check_module_name_match(const char *filename, -- struct stat *statbuf UNUSED_PARAM, -- void *userdata, int depth UNUSED_PARAM) --{ -- 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 */ -- m_filename = xstrdup(filename); -- return FALSE; -- } -- return TRUE; --} -- - - /*======================================================================*/ - -@@ -835,32 +909,20 @@ static struct obj_symbol *arch_new_symbo - static enum obj_reloc - arch_apply_relocation(struct obj_file *f, - struct obj_section *targsec, -- /*struct obj_section *symsec,*/ -+ struct obj_section *symsec, - struct obj_symbol *sym, - ElfW(RelM) *rel, ElfW(Addr) v) - { --#if defined(__arm__) || defined(__i386__) || defined(__mc68000__) \ -- || defined(__sh__) || defined(__s390__) || defined(__x86_64__) \ -- || defined(__powerpc__) || defined(__mips__) - struct arch_file *ifile = (struct arch_file *) f; --#endif - enum obj_reloc ret = obj_reloc_ok; - ElfW(Addr) *loc = (ElfW(Addr) *) (targsec->contents + rel->r_offset); --#if defined(__arm__) || defined(__H8300H__) || defined(__H8300S__) \ -- || defined(__i386__) || defined(__mc68000__) || defined(__microblaze__) \ -- || defined(__mips__) || defined(__nios2__) || defined(__powerpc__) \ -- || defined(__s390__) || defined(__sh__) || defined(__x86_64__) - ElfW(Addr) dot = targsec->header.sh_addr + rel->r_offset; --#endif - #if defined(USE_GOT_ENTRIES) || defined(USE_PLT_ENTRIES) - struct arch_symbol *isym = (struct arch_symbol *) sym; - #endif --#if defined(__arm__) || defined(__i386__) || defined(__mc68000__) \ -- || defined(__sh__) || defined(__s390__) - #if defined(USE_GOT_ENTRIES) - ElfW(Addr) got = ifile->got ? ifile->got->header.sh_addr : 0; - #endif --#endif - #if defined(USE_PLT_ENTRIES) - ElfW(Addr) plt = ifile->plt ? ifile->plt->header.sh_addr : 0; - unsigned long *ip; -@@ -954,7 +1016,6 @@ arch_apply_relocation(struct obj_file *f - - case R_386_PLT32: - case R_386_PC32: -- case R_386_GOTOFF: - *loc += v - dot; - break; - -@@ -973,6 +1034,9 @@ arch_apply_relocation(struct obj_file *f - - case R_386_GOT32: - goto bb_use_got; -+ -+ case R_386_GOTOFF: -+ *loc += v - got; - break; - - #elif defined(__microblaze__) -@@ -1764,7 +1828,7 @@ static int arch_list_add(ElfW(RelM) *rel - - #if defined(USE_SINGLE) - --static int arch_single_init(/*ElfW(RelM) *rel,*/ struct arch_single_entry *single, -+static int arch_single_init(ElfW(RelM) *rel, struct arch_single_entry *single, - int offset, int size) - { - if (single->allocated == 0) { -@@ -1912,7 +1976,7 @@ static void arch_create_got(struct obj_f - #if defined(USE_GOT_ENTRIES) - if (got_allocate) { - got_offset += arch_single_init( -- /*rel,*/ &intsym->gotent, -+ rel, &intsym->gotent, - got_offset, GOT_ENTRY_SIZE); - - got_needed = 1; -@@ -1926,7 +1990,7 @@ static void arch_create_got(struct obj_f - plt_offset, PLT_ENTRY_SIZE); - #else - plt_offset += arch_single_init( -- /*rel,*/ &intsym->pltent, -+ rel, &intsym->pltent, - plt_offset, PLT_ENTRY_SIZE); - #endif - plt_needed = 1; -@@ -1964,8 +2028,7 @@ static unsigned long obj_elf_hash_n(cons - while (n > 0) { - ch = *name++; - h = (h << 4) + ch; -- g = (h & 0xf0000000); -- if (g != 0) { -+ if ((g = (h & 0xf0000000)) != 0) { - h ^= g >> 24; - h &= ~g; - } -@@ -2044,7 +2107,7 @@ obj_add_symbol(struct obj_file *f, const - int n_type = ELF_ST_TYPE(info); - int n_binding = ELF_ST_BIND(info); - -- for (sym = f->symtab[hash]; sym; sym = sym->next) { -+ for (sym = f->symtab[hash]; sym; sym = sym->next) - if (f->symbol_cmp(sym->name, name) == 0) { - int o_secidx = sym->secidx; - int o_info = sym->info; -@@ -2103,14 +2166,14 @@ obj_add_symbol(struct obj_file *f, const - return sym; - } - } -- } - - /* Completely new symbol. */ - sym = arch_new_symbol(); - sym->next = f->symtab[hash]; - f->symtab[hash] = sym; - sym->ksymidx = -1; -- if (ELF_ST_BIND(info) == STB_LOCAL && symidx != (unsigned long)(-1)) { -+ -+ if (ELF_ST_BIND(info) == STB_LOCAL && symidx != -1) { - if (symidx >= f->local_symtab_size) - bb_error_msg("local symbol %s with index %ld exceeds local_symtab_size %ld", - name, (long) symidx, (long) f->local_symtab_size); -@@ -3234,7 +3297,7 @@ static int obj_relocate(struct obj_file - - /* Do it! */ - switch (arch_apply_relocation -- (f, targsec, /*symsec,*/ intsym, rel, value) -+ (f, targsec, symsec, intsym, rel, value) - ) { - case obj_reloc_ok: - break; -@@ -3313,11 +3376,11 @@ static int obj_create_image(struct obj_f - - /*======================================================================*/ - --static struct obj_file *obj_load(FILE *fp, int loadprogbits UNUSED_PARAM) -+static struct obj_file *obj_load(FILE *fp, int loadprogbits) - { - struct obj_file *f; - ElfW(Shdr) * section_headers; -- size_t shnum, i; -+ int shnum, i; - char *shstrtab; - - /* Read the file header. */ -@@ -3591,7 +3654,7 @@ static int obj_gpl_license(struct obj_fi - while (ptr < endptr) { - value = strchr(ptr, '='); - if (value && strncmp(ptr, "license", value-ptr) == 0) { -- unsigned i; -+ int i; - if (license) - *license = value+1; - for (i = 0; i < ARRAY_SIZE(gpl_licenses); ++i) { -@@ -3695,9 +3758,6 @@ static void check_tainted_module(struct - * start of some sections. this info is used by ksymoops to do better - * debugging. - */ --#if !ENABLE_FEATURE_INSMOD_VERSION_CHECKING --#define get_module_version(f, str) get_module_version(str) --#endif - static int - get_module_version(struct obj_file *f, char str[STRVERSIONLEN]) - { -@@ -3730,8 +3790,7 @@ add_ksymoops_symbols(struct obj_file *f, - struct obj_symbol *sym; - char *name, *absolute_filename; - char str[STRVERSIONLEN]; -- unsigned i; -- int l, lm_name, lfilename, use_ksymtab, version; -+ int i, l, lm_name, lfilename, use_ksymtab, version; - struct stat statbuf; - - /* WARNING: was using realpath, but replaced by readlink to stop using -@@ -3922,145 +3981,57 @@ static void print_load_map(struct obj_fi - void print_load_map(struct obj_file *f); - #endif - --int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; --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 = NULL; -- int exit_status = EXIT_FAILURE; -+ char *tmp = NULL, *m_name = NULL; -+ 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 = NULL; --#else -- FILE *fp; --#endif -- int k_version = 0; -+ 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]; - if (option_mask32 & OPT_o) { // -o /* name the output module */ -- free(m_name); - 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); -+ ret = find_module(arg1); -+ if (ret) -+ goto out; - - if (!m_name) { -- m_name = tmp; -- } else { -- free(tmp1); -- tmp1 = NULL; /* flag for free(m_name) before exit() */ -- } -- -- /* Get a filedesc for the module. Check that we have a complete path */ -- if (stat(arg1, &st) < 0 || !S_ISREG(st.st_mode) -- || (fp = fopen_for_read(arg1)) == 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; -- -- tmdn = concat_path_file(CONFIG_DEFAULT_MODULES_DIR, 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... */ -- module_dir = xmalloc_readlink(tmdn); -- if (!module_dir) -- module_dir = xstrdup(tmdn); -- recursive_action(module_dir, ACTION_RECURSE, -- check_module_name_match, NULL, m_fullName, 0); -- free(module_dir); -- free(tmdn); -- } -- -- /* Check if we have found anything yet */ -- if (!m_filename || ((fp = fopen_for_read(m_filename)) == NULL)) { -- int r; -- char *module_dir; -- -- free(m_filename); -- m_filename = NULL; -- module_dir = xmalloc_readlink(CONFIG_DEFAULT_MODULES_DIR); -- if (!module_dir) -- module_dir = xstrdup(CONFIG_DEFAULT_MODULES_DIR); -- /* No module found under /lib/modules/`uname -r`, this -- * time cast the net a bit wider. Search /lib/modules/ */ -- r = recursive_action(module_dir, ACTION_RECURSE, -- check_module_name_match, NULL, m_fullName, 0); -- if (r) -- bb_error_msg_and_die("%s: module not found", m_fullName); -- free(module_dir); -- if (m_filename == NULL -- || ((fp = fopen_for_read(m_filename)) == NULL) -- ) { -- bb_error_msg_and_die("%s: module not found", m_fullName); -- } -+ tmp = xstrdup(arg1); -+ m_name = basename(tmp); - } -- } else -- m_filename = xstrdup(arg1); -- -- if (flag_verbose) -- printf("Using %s\n", m_filename); - --#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_for_read(g_filename); -+ if (!fp) { -+ ret = errno; -+ goto out; - } --#endif - - f = obj_load(fp, LOADBITS); - -@@ -4087,7 +4058,7 @@ int insmod_main(int argc, char **argv) - "\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; - } -@@ -4129,7 +4100,7 @@ int insmod_main(int argc, char **argv) - 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); -@@ -4138,7 +4109,7 @@ int insmod_main(int argc, char **argv) - m_size = obj_load_size(f); - - m_addr = create_module(m_name, m_size); -- if (m_addr == (ElfW(Addr))(-1)) switch (errno) { -+ if (m_addr == -1) switch (errno) { - case EEXIST: - bb_error_msg_and_die("a module named %s already exists", m_name); - case ENOMEM: -@@ -4154,36 +4125,37 @@ int insmod_main(int argc, char **argv) - * now we can load them directly into the kernel memory - */ - if (!obj_load_progbits(fp, f, (char*)m_addr)) { -- delete_module(m_name, 0); -+ delete_module(m_name); - goto out; - } - #endif - - if (!obj_relocate(f, m_addr)) { -- delete_module(m_name, 0); -+ delete_module(m_name); - goto out; - } - - if (!new_init_module(m_name, f, m_size)) { -- delete_module(m_name, 0); -+ delete_module(m_name); - goto out; - } - - if (flag_print_load_map) - print_load_map(f); - -- exit_status = EXIT_SUCCESS; -+ ret = EXIT_SUCCESS; - - out: - #if ENABLE_FEATURE_CLEAN_UP - if (fp) - fclose(fp); -- free(tmp1); -- if (!tmp1) -+ if (tmp) -+ free(tmp); -+ else if (m_name) - free(m_name); -- free(m_filename); -+ free(g_filename); - #endif -- return exit_status; + return ret; - } - - #endif /* ENABLE_FEATURE_2_4_MODULES */ -@@ -4195,15 +4167,8 @@ int insmod_main(int argc, char **argv) - #if ENABLE_FEATURE_2_6_MODULES - - #include <sys/mman.h> -- --#if defined __UCLIBC__ && !ENABLE_FEATURE_2_4_MODULES --/* big time suckage. The old prototype above renders our nice fwd-decl wrong */ --extern int init_module(void *module, unsigned long len, const char *options); --#else - #include <asm/unistd.h> - #include <sys/syscall.h> --#define init_module(mod, len, opts) syscall(__NR_init_module, mod, len, opts) --#endif - - /* We use error numbers in a loose translation... */ - static const char *moderror(int err) -@@ -4222,22 +4187,32 @@ static const char *moderror(int err) - } - } - --#if !ENABLE_FEATURE_2_4_MODULES --int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; --int insmod_main(int argc UNUSED_PARAM, char **argv) --#else --static int insmod_ng_main(int argc UNUSED_PARAM, char **argv) --#endif -+int insmod_main_26(int argc, char **argv) - { -- 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; + 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(); -+ ret = find_module(filename); -+ if (ret || (g_filename == NULL)) -+ goto done; +- rc = bb_init_module(filename, parse_cmdline_module_options(argv)); ++ rc = find_module(filename); ++ if (rc || (g_filename == NULL)) ++ goto done; + - /* Rest is options */ - options = xzalloc(1); - optlen = 0; -@@ -4247,41 +4222,47 @@ static int insmod_ng_main(int argc UNUSE - optlen += sprintf(options + optlen, (strchr(*argv,' ') ? "\"%s\" " : "%s "), *argv); - } - --#if 0 -- /* Any special reason why mmap? It isn't performance critical. -vda */ -- /* Yes, xmalloc'ing can use *alot* of RAM. Don't forget that there are -- * modules out there that are half a megabyte! mmap()ing is way nicer -- * for small mem boxes, i guess. */ -- /* But after load, these modules will take up that 0.5mb in kernel -- * anyway. Using malloc here causes only a transient spike to 1mb, -- * after module is loaded, we go back to normal 0.5mb usage -- * (in kernel). Also, mmap isn't magic - when we touch mapped data, -- * we use memory. -vda */ -- 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); -- } ++ rc = bb_init_module(g_filename, parse_cmdline_module_options(argv)); + if (rc) + bb_error_msg("cannot insert '%s': %s", filename, moderror(rc)); - -- /* 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_xopen_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)", -+ g_filename, moderror(errno), ret); -+ } ++ free (g_filename); +done: -+ if (g_filename && (g_filename != filename)) -+ free(g_filename); - -- if (init_module(map, len, options) != 0) -- bb_error_msg_and_die("cannot insert '%s': %s", -- filename, moderror(errno)); -- return 0; -+ return ret; + return rc; } - - #endif -+ -+int insmod_main(int argc, char **argv) -+{ -+ int ret; -+ -+ g_filename = NULL; -+#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; -+} |