diff options
| -rw-r--r-- | include/linux/module.h | 21 | ||||
| -rw-r--r-- | kernel/kallsyms.c | 30 | ||||
| -rw-r--r-- | kernel/module.c | 12 |
3 files changed, 29 insertions, 34 deletions
diff --git a/include/linux/module.h b/include/linux/module.h index 799930216626..58d5a10cdf0d 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -370,16 +370,14 @@ struct module *module_text_address(unsigned long addr); struct module *__module_text_address(unsigned long addr); int is_module_address(unsigned long addr); -/* Returns module and fills in value, defined and namebuf, or NULL if +/* Returns 0 and fills in value, defined and namebuf, or -ERANGE if symnum out of range. */ -struct module *module_get_kallsym(unsigned int symnum, unsigned long *value, - char *type, char *name); +int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, + char *name, char *module_name, int *exported); /* Look for this name: can be of form module:name. */ unsigned long module_kallsyms_lookup_name(const char *name); -int is_exported(const char *name, const struct module *mod); - extern void __module_put_and_exit(struct module *mod, long code) __attribute__((noreturn)); #define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code); @@ -527,11 +525,11 @@ static inline const char *module_address_lookup(unsigned long addr, return NULL; } -static inline struct module *module_get_kallsym(unsigned int symnum, - unsigned long *value, - char *type, char *name) +static inline int module_get_kallsym(unsigned int symnum, unsigned long *value, + char *type, char *name, + char *module_name, int *exported) { - return NULL; + return -ERANGE; } static inline unsigned long module_kallsyms_lookup_name(const char *name) @@ -539,11 +537,6 @@ static inline unsigned long module_kallsyms_lookup_name(const char *name) return 0; } -static inline int is_exported(const char *name, const struct module *mod) -{ - return 0; -} - static inline int register_module_notifier(struct notifier_block * nb) { /* no events will happen anyway, so this can always succeed */ diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c index d086c91d44ed..f1ea6f66ac6c 100644 --- a/kernel/kallsyms.c +++ b/kernel/kallsyms.c @@ -301,25 +301,20 @@ void __print_symbol(const char *fmt, unsigned long address) struct kallsym_iter { loff_t pos; - struct module *owner; unsigned long value; unsigned int nameoff; /* If iterating in core kernel symbols */ char type; char name[KSYM_NAME_LEN+1]; + char module_name[MODULE_NAME_LEN + 1]; + int exported; }; static int get_ksymbol_mod(struct kallsym_iter *iter) { - iter->owner = module_get_kallsym(iter->pos - kallsyms_num_syms, - &iter->value, &iter->type, - iter->name); - if (iter->owner == NULL) + if (module_get_kallsym(iter->pos - kallsyms_num_syms, &iter->value, + &iter->type, iter->name, iter->module_name, + &iter->exported) < 0) return 0; - - /* Label it "global" if it is exported, "local" if not exported. */ - iter->type = is_exported(iter->name, iter->owner) - ? toupper(iter->type) : tolower(iter->type); - return 1; } @@ -328,7 +323,7 @@ static unsigned long get_ksymbol_core(struct kallsym_iter *iter) { unsigned off = iter->nameoff; - iter->owner = NULL; + iter->module_name[0] = '\0'; iter->value = kallsyms_addresses[iter->pos]; iter->type = kallsyms_get_symbol_type(off); @@ -392,12 +387,17 @@ static int s_show(struct seq_file *m, void *p) if (!iter->name[0]) return 0; - if (iter->owner) + if (iter->module_name[0]) { + char type; + + /* Label it "global" if it is exported, + * "local" if not exported. */ + type = iter->exported ? toupper(iter->type) : + tolower(iter->type); seq_printf(m, "%0*lx %c %s\t[%s]\n", (int)(2*sizeof(void*)), - iter->value, iter->type, iter->name, - module_name(iter->owner)); - else + iter->value, type, iter->name, iter->module_name); + } else seq_printf(m, "%0*lx %c %s\n", (int)(2*sizeof(void*)), iter->value, iter->type, iter->name); diff --git a/kernel/module.c b/kernel/module.c index 43a529a1fa48..5ee65994a3bc 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -1472,7 +1472,7 @@ static void setup_modinfo(struct module *mod, Elf_Shdr *sechdrs, } #ifdef CONFIG_KALLSYMS -int is_exported(const char *name, const struct module *mod) +static int is_exported(const char *name, const struct module *mod) { if (!mod && lookup_symbol(name, __start___ksymtab, __stop___ksymtab)) return 1; @@ -2124,8 +2124,8 @@ const char *module_address_lookup(unsigned long addr, return NULL; } -struct module *module_get_kallsym(unsigned int symnum, unsigned long *value, - char *type, char *name) +int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, + char *name, char *module_name, int *exported) { struct module *mod; @@ -2136,13 +2136,15 @@ struct module *module_get_kallsym(unsigned int symnum, unsigned long *value, *type = mod->symtab[symnum].st_info; strlcpy(name, mod->strtab + mod->symtab[symnum].st_name, KSYM_NAME_LEN + 1); + strlcpy(module_name, mod->name, MODULE_NAME_LEN + 1); + *exported = is_exported(name, mod); mutex_unlock(&module_mutex); - return mod; + return 0; } symnum -= mod->num_symtab; } mutex_unlock(&module_mutex); - return NULL; + return -ERANGE; } static unsigned long mod_find_symname(struct module *mod, const char *name) |