diff --git a/lib/libkldelf/ef.c b/lib/libkldelf/ef.c --- a/lib/libkldelf/ef.c +++ b/lib/libkldelf/ef.c @@ -89,6 +89,7 @@ .seg_read_string = ef_seg_read_string, .symaddr = ef_symaddr, .lookup_set = ef_lookup_set, + .lookup_symbol = ef_lookup_symbol, }; static void diff --git a/lib/libkldelf/ef_obj.c b/lib/libkldelf/ef_obj.c --- a/lib/libkldelf/ef_obj.c +++ b/lib/libkldelf/ef_obj.c @@ -109,6 +109,7 @@ .seg_read_string = ef_obj_seg_read_string, .symaddr = ef_obj_symaddr, .lookup_set = ef_obj_lookup_set, + .lookup_symbol = ef_obj_lookup_symbol, }; static GElf_Off diff --git a/lib/libkldelf/elf.c b/lib/libkldelf/elf.c --- a/lib/libkldelf/elf.c +++ b/lib/libkldelf/elf.c @@ -686,3 +686,9 @@ return (efile->ef_reloc(efile, reldata, reltype, relbase, dataoff, len, dest)); } + +int +elf_lookup_symbol(struct elf_file *efile, const char *name, GElf_Sym **sym) +{ + return (EF_LOOKUP_SYMBOL(efile, name, sym)); +} diff --git a/lib/libkldelf/kldelf.h b/lib/libkldelf/kldelf.h --- a/lib/libkldelf/kldelf.h +++ b/lib/libkldelf/kldelf.h @@ -48,6 +48,8 @@ (ef)->ef_ops->symaddr((ef)->ef_ef, symidx) #define EF_LOOKUP_SET(ef, name, startp, stopp, countp) \ (ef)->ef_ops->lookup_set((ef)->ef_ef, name, startp, stopp, countp) +#define EF_LOOKUP_SYMBOL(ef, name, sym) \ + (ef)->ef_ops->lookup_symbol((ef)->ef_ef, name, sym) /* XXX, should have a different name. */ typedef struct ef_file *elf_file_t; @@ -67,6 +69,7 @@ GElf_Addr (*symaddr)(elf_file_t ef, GElf_Size symidx); int (*lookup_set)(elf_file_t ef, const char *name, GElf_Addr *startp, GElf_Addr *stopp, long *countp); + int (*lookup_symbol)(elf_file_t ef, const char *name, GElf_Sym **sym); }; typedef int (elf_reloc_t)(struct elf_file *ef, const void *reldata, @@ -310,6 +313,16 @@ int elf_reloc(struct elf_file *ef, const void *reldata, Elf_Type reltype, GElf_Addr relbase, GElf_Addr dataoff, size_t len, void *dest); +/* + * Find the symbol with the specified symbol name 'name' within the given + * 'efile'. 0 is returned when such a symbol is found, otherwise ENOENT is + * returned. + * + * XXX: This only return the first symbol being found when traversing symtab. + */ +int elf_lookup_symbol(struct elf_file *efile, const char *name, + GElf_Sym **sym); + __END_DECLS #endif /* _KLDELF_H_*/