Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 54/54] module: wrapper for symbol name. | Date | Tue, 23 Feb 2016 19:34:11 -0800 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: Rusty Russell <rusty@rustcorp.com.au>
commit 2e7bac536106236104e9e339531ff0fcdb7b8147 upstream.
This trivial wrapper adds clarity and makes the following patch smaller.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- kernel/module.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-)
--- a/kernel/module.c +++ b/kernel/module.c @@ -3398,6 +3398,11 @@ static inline int is_arm_mapping_symbol( && (str[2] == '\0' || str[2] == '.'); } +static const char *symname(struct module *mod, unsigned int symnum) +{ + return mod->strtab + mod->symtab[symnum].st_name; +} + static const char *get_ksymbol(struct module *mod, unsigned long addr, unsigned long *size, @@ -3420,15 +3425,15 @@ static const char *get_ksymbol(struct mo /* We ignore unnamed symbols: they're uninformative * and inserted at a whim. */ + if (*symname(mod, i) == '\0' + || is_arm_mapping_symbol(symname(mod, i))) + continue; + if (mod->symtab[i].st_value <= addr - && mod->symtab[i].st_value > mod->symtab[best].st_value - && *(mod->strtab + mod->symtab[i].st_name) != '\0' - && !is_arm_mapping_symbol(mod->strtab + mod->symtab[i].st_name)) + && mod->symtab[i].st_value > mod->symtab[best].st_value) best = i; if (mod->symtab[i].st_value > addr - && mod->symtab[i].st_value < nextval - && *(mod->strtab + mod->symtab[i].st_name) != '\0' - && !is_arm_mapping_symbol(mod->strtab + mod->symtab[i].st_name)) + && mod->symtab[i].st_value < nextval) nextval = mod->symtab[i].st_value; } @@ -3439,7 +3444,7 @@ static const char *get_ksymbol(struct mo *size = nextval - mod->symtab[best].st_value; if (offset) *offset = addr - mod->symtab[best].st_value; - return mod->strtab + mod->symtab[best].st_name; + return symname(mod, best); } /* For kallsyms to ask for address resolution. NULL means not found. Careful @@ -3540,8 +3545,7 @@ int module_get_kallsym(unsigned int symn if (symnum < mod->num_symtab) { *value = mod->symtab[symnum].st_value; *type = mod->symtab[symnum].st_info; - strlcpy(name, mod->strtab + mod->symtab[symnum].st_name, - KSYM_NAME_LEN); + strlcpy(name, symname(mod, symnum), KSYM_NAME_LEN); strlcpy(module_name, mod->name, MODULE_NAME_LEN); *exported = is_exported(name, *value, mod); preempt_enable(); @@ -3558,7 +3562,7 @@ static unsigned long mod_find_symname(st unsigned int i; for (i = 0; i < mod->num_symtab; i++) - if (strcmp(name, mod->strtab+mod->symtab[i].st_name) == 0 && + if (strcmp(name, symname(mod, i)) == 0 && mod->symtab[i].st_info != 'U') return mod->symtab[i].st_value; return 0; @@ -3602,7 +3606,7 @@ int module_kallsyms_on_each_symbol(int ( if (mod->state == MODULE_STATE_UNFORMED) continue; for (i = 0; i < mod->num_symtab; i++) { - ret = fn(data, mod->strtab + mod->symtab[i].st_name, + ret = fn(data, symname(mod, i), mod, mod->symtab[i].st_value); if (ret != 0) return ret;
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