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| author | Glenn L McGrath | 2003-08-30 06:00:33 +0000 |
|---|---|---|
| committer | Glenn L McGrath | 2003-08-30 06:00:33 +0000 |
| commit | 759515c26a8aa034b9c3f4b6dfd3b187df48883c (patch) | |
| tree | a0262e3557d083a8f287a66eaf3497319a0ef3d2 | |
| parent | 29a05f56d579e6845db6b90cab4acff47ab0dd22 (diff) | |
| download | busybox-759515c26a8aa034b9c3f4b6dfd3b187df48883c.zip busybox-759515c26a8aa034b9c3f4b6dfd3b187df48883c.tar.gz | |
handle GPLONLY symbols
| -rw-r--r-- | modutils/insmod.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/modutils/insmod.c b/modutils/insmod.c index c5cab19..4676b5a 100644 --- a/modutils/insmod.c +++ b/modutils/insmod.c @@ -253,7 +253,7 @@ #ifndef MODUTILS_MODULE_H static const int MODUTILS_MODULE_H = 1; -#ident "$Id: insmod.c,v 1.100 2003/08/13 19:56:33 andersen Exp $" +#ident "$Id: insmod.c,v 1.101 2003/08/30 06:00:33 bug1 Exp $" /* This file contains the structures used by the 2.0 and 2.1 kernels. We do not use the kernel headers directly because we do not wish @@ -474,7 +474,7 @@ int delete_module(const char *); #ifndef MODUTILS_OBJ_H static const int MODUTILS_OBJ_H = 1; -#ident "$Id: insmod.c,v 1.100 2003/08/13 19:56:33 andersen Exp $" +#ident "$Id: insmod.c,v 1.101 2003/08/30 06:00:33 bug1 Exp $" /* The relocatable object is manipulated using elfin types. */ @@ -650,6 +650,8 @@ static enum obj_reloc arch_apply_relocation (struct obj_file *f, static void arch_create_got (struct obj_file *f); +static int obj_gpl_license(struct obj_file *f, const char **license); + #ifdef CONFIG_FEATURE_NEW_MODULE_INTERFACE static int arch_init_module (struct obj_file *f, struct new_module *); #endif @@ -660,7 +662,6 @@ static int arch_init_module (struct obj_file *f, struct new_module *); //---------------------------------------------------------------------------- - /* SPFX is always a string, so it can be concatenated to string constants. */ #ifdef SYMBOL_PREFIX #define SPFX SYMBOL_PREFIX @@ -1927,11 +1928,14 @@ add_symbols_from( struct new_module_symbol *s; size_t i; int used = 0; + int gpl; #ifdef SYMBOL_PREFIX char *name_buf = 0; size_t name_alloced_size = 0; #endif + gpl = obj_gpl_license(f, NULL) == 0; + for (i = 0, s = syms; i < nsyms; ++i, ++s) { /* Only add symbols that are already marked external. If we override locals we may cause problems for @@ -1940,6 +1944,19 @@ add_symbols_from( struct obj_symbol *sym; char *name = (char *)s->name; + /* GPL licensed modules can use symbols exported with + * EXPORT_SYMBOL_GPL, so ignore any GPLONLY_ prefix on the + * exported names. Non-GPL modules never see any GPLONLY_ + * symbols so they cannot fudge it by adding the prefix on + * their references. + */ + if (strncmp((char *)s->name, "GPLONLY_", 8) == 0) { + if (gpl) + ((char *)s->name) += 8; + else + continue; + } + #ifdef SYMBOL_PREFIX /* Prepend SYMBOL_PREFIX to the symbol's name (the kernel exports `C names', but module object files @@ -3612,6 +3629,7 @@ static void hide_special_symbols(struct obj_file *f) ELFW(ST_INFO) (STB_LOCAL, ELFW(ST_TYPE) (sym->info)); } + #ifdef CONFIG_FEATURE_CHECK_TAINTED_MODULE static int obj_gpl_license(struct obj_file *f, const char **license) { |