diff options
author | Tim Abbott <tabbott@mit.edu> | 2008-12-06 00:03:59 (GMT) |
---|---|---|
committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-03-31 02:35:33 (GMT) |
commit | c6b37801911d7f4663c99cad8aa230bc934cea82 (patch) | |
tree | a39a317c5f9fa2d5ba9813bbe29e3139c52e194e /include/linux | |
parent | 75a66614db21007bcc8c37f9c5d5b922981387b9 (diff) | |
download | linux-fsl-qoriq-c6b37801911d7f4663c99cad8aa230bc934cea82.tar.xz |
module: Export symbols needed for Ksplice
Impact: Expose some module.c symbols
Ksplice uses several functions from module.c in order to resolve
symbols and implement dependency handling. Calling these functions
requires holding module_mutex, so it is exported.
(This is just the module part of a bigger add-exports patch from Tim).
Cc: Anders Kaseorg <andersk@mit.edu>
Cc: Jeff Arnold <jbarnold@mit.edu>
Signed-off-by: Tim Abbott <tabbott@mit.edu>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/module.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/module.h b/include/linux/module.h index c3d3fc4..d246da0 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -354,6 +354,8 @@ struct module #define MODULE_ARCH_INIT {} #endif +extern struct mutex module_mutex; + /* FIXME: It'd be nice to isolate modules during init, too, so they aren't used before they (may) fail. But presently too much code (IDE & SCSI) require entry into the module during init.*/ @@ -379,6 +381,31 @@ static inline int within_module_init(unsigned long addr, struct module *mod) addr < (unsigned long)mod->module_init + mod->init_size; } +/* Search for module by name: must hold module_mutex. */ +struct module *find_module(const char *name); + +struct symsearch { + const struct kernel_symbol *start, *stop; + const unsigned long *crcs; + enum { + NOT_GPL_ONLY, + GPL_ONLY, + WILL_BE_GPL_ONLY, + } licence; + bool unused; +}; + +/* Search for an exported symbol by name. */ +const struct kernel_symbol *find_symbol(const char *name, + struct module **owner, + const unsigned long **crc, + bool gplok, + bool warn); + +/* Walk the exported symbol table */ +bool each_symbol(bool (*fn)(const struct symsearch *arr, struct module *owner, + unsigned int symnum, void *data), void *data); + /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if symnum out of range. */ int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, @@ -452,6 +479,7 @@ static inline void __module_get(struct module *module) #define symbol_put_addr(p) do { } while(0) #endif /* CONFIG_MODULE_UNLOAD */ +int use_module(struct module *a, struct module *b); /* This is a #define so the string doesn't get put in every .o file */ #define module_name(mod) \ |