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mm: introduce coredump parameter structure

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Introduce coredump parameter data structure (struct coredump_params) to
simplify binfmt->core_dump() arguments.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Suggested-by: Ingo Molnar <mingo@elte.hu>
Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Masami Hiramatsu 2009-12-17 15:27:16 -08:00 • committed by Linus Torvalds
parent 9cd80bbb07
commit f6151dfea2
7 changed files with 69 additions and 53 deletions
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13
fs/binfmt_aout.c
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@ -32,7 +32,7 @@
static int load_aout_binary(struct linux_binprm *, struct pt_regs * regs);
static int load_aout_library(struct file*);
static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit);
static int aout_core_dump(struct coredump_params *cprm);
static struct linux_binfmt aout_format = {
.module = THIS_MODULE,
@ -89,8 +89,9 @@ if (file->f_op->llseek) { \
* dumping of the process results in another error..
*/
static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, unsigned long limit)
static int aout_core_dump(struct coredump_params *cprm)
{
struct file *file = cprm->file;
mm_segment_t fs;
int has_dumped = 0;
unsigned long dump_start, dump_size;
@ -108,16 +109,16 @@ static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, u
current->flags |= PF_DUMPCORE;
strncpy(dump.u_comm, current->comm, sizeof(dump.u_comm));
dump.u_ar0 = offsetof(struct user, regs);
dump.signal = signr;
aout_dump_thread(regs, &dump);
dump.signal = cprm->signr;
aout_dump_thread(cprm->regs, &dump);
/* If the size of the dump file exceeds the rlimit, then see what would happen
if we wrote the stack, but not the data area. */
if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > limit)
if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > cprm->limit)
dump.u_dsize = 0;
/* Make sure we have enough room to write the stack and data areas. */
if ((dump.u_ssize + 1) * PAGE_SIZE > limit)
if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit)
dump.u_ssize = 0;
/* make sure we actually have a data and stack area to dump */