On Fri, 07 Sep 2012 16:45:11 -0700 Randy Dunlap <rdunlap@xxxxxxxxxxxx> wrote: > On 09/06/2012 04:47 PM, akpm@xxxxxxxxxxxxxxxxxxxx wrote: > > > The mm-of-the-moment snapshot 2012-09-06-16-46 has been uploaded to > > > > http://www.ozlabs.org/~akpm/mmotm/ > > > > > when CONFIG_COREDUMP is not enabled: > > ERROR: "dump_seek" [fs/binfmt_aout.ko] undefined! > ERROR: "dump_write" [fs/binfmt_aout.ko] undefined! Thanks. I guess we make aout_core_dump() disappear if CONFIG_COREDUMP=n. --- a/fs/binfmt_aout.c~coredump-make-core-dump-functionality-optional-fix-fix +++ a/fs/binfmt_aout.c @@ -32,31 +32,8 @@ static int load_aout_binary(struct linux_binprm *, struct pt_regs * regs); static int load_aout_library(struct file*); -static int aout_core_dump(struct coredump_params *cprm); - -static struct linux_binfmt aout_format = { - .module = THIS_MODULE, - .load_binary = load_aout_binary, - .load_shlib = load_aout_library, - .core_dump = aout_core_dump, - .min_coredump = PAGE_SIZE -}; - -#define BAD_ADDR(x) ((unsigned long)(x) >= TASK_SIZE) - -static int set_brk(unsigned long start, unsigned long end) -{ - start = PAGE_ALIGN(start); - end = PAGE_ALIGN(end); - if (end > start) { - unsigned long addr; - addr = vm_brk(start, end - start); - if (BAD_ADDR(addr)) - return addr; - } - return 0; -} +#ifdef CONFIG_COREDUMP /* * Routine writes a core dump image in the current directory. * Currently only a stub-function. @@ -66,7 +43,6 @@ static int set_brk(unsigned long start, * field, which also makes sure the core-dumps won't be recursive if the * dumping of the process results in another error.. */ - static int aout_core_dump(struct coredump_params *cprm) { struct file *file = cprm->file; @@ -135,6 +111,32 @@ end_coredump: set_fs(fs); return has_dumped; } +#else +#define aout_core_dump NULL +#endif + +static struct linux_binfmt aout_format = { + .module = THIS_MODULE, + .load_binary = load_aout_binary, + .load_shlib = load_aout_library, + .core_dump = aout_core_dump, + .min_coredump = PAGE_SIZE +}; + +#define BAD_ADDR(x) ((unsigned long)(x) >= TASK_SIZE) + +static int set_brk(unsigned long start, unsigned long end) +{ + start = PAGE_ALIGN(start); + end = PAGE_ALIGN(end); + if (end > start) { + unsigned long addr; + addr = vm_brk(start, end - start); + if (BAD_ADDR(addr)) + return addr; + } + return 0; +} /* * create_aout_tables() parses the env- and arg-strings in new user _ -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
