From 47889798da4307ed78346f04c5d95c87abbf696b Mon Sep 17 00:00:00 2001 From: Aaron Tomlin Date: Tue, 22 Mar 2022 14:03:44 +0000 Subject: module: Move version support into a separate file No functional change. This patch migrates module version support out of core code into kernel/module/version.c. In addition simple code refactoring to make this possible. Reviewed-by: Christophe Leroy Signed-off-by: Aaron Tomlin Signed-off-by: Luis Chamberlain --- kernel/module/internal.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) (limited to 'kernel/module/internal.h') diff --git a/kernel/module/internal.h b/kernel/module/internal.h index 62d749ef695e..3fc139d5074b 100644 --- a/kernel/module/internal.h +++ b/kernel/module/internal.h @@ -70,7 +70,27 @@ struct load_info { } index; }; +enum mod_license { + NOT_GPL_ONLY, + GPL_ONLY, +}; + +struct find_symbol_arg { + /* Input */ + const char *name; + bool gplok; + bool warn; + + /* Output */ + struct module *owner; + const s32 *crc; + const struct kernel_symbol *sym; + enum mod_license license; +}; + int mod_verify_sig(const void *mod, struct load_info *info); +int try_to_force_load(struct module *mod, const char *reason); +bool find_symbol(struct find_symbol_arg *fsa); struct module *find_module_all(const char *name, size_t len, bool even_unformed); int cmp_name(const void *name, const void *sym); long module_get_offset(struct module *mod, unsigned int *size, Elf_Shdr *sechdr, @@ -225,3 +245,31 @@ static inline int mod_sysfs_setup(struct module *mod, static inline void mod_sysfs_teardown(struct module *mod) { } static inline void init_param_lock(struct module *mod) { } #endif /* CONFIG_SYSFS */ + +#ifdef CONFIG_MODVERSIONS +int check_version(const struct load_info *info, + const char *symname, struct module *mod, const s32 *crc); +void module_layout(struct module *mod, struct modversion_info *ver, struct kernel_param *kp, + struct kernel_symbol *ks, struct tracepoint * const *tp); +int check_modstruct_version(const struct load_info *info, struct module *mod); +int same_magic(const char *amagic, const char *bmagic, bool has_crcs); +#else /* !CONFIG_MODVERSIONS */ +static inline int check_version(const struct load_info *info, + const char *symname, + struct module *mod, + const s32 *crc) +{ + return 1; +} + +static inline int check_modstruct_version(const struct load_info *info, + struct module *mod) +{ + return 1; +} + +static inline int same_magic(const char *amagic, const char *bmagic, bool has_crcs) +{ + return strcmp(amagic, bmagic) == 0; +} +#endif /* CONFIG_MODVERSIONS */ -- cgit v1.2.3-70-g09d2