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arch/um/os-Linux/start_up.c: various improvements.

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- lets ptrace_child become void
 - adds checking for the return value of change_sig
 - moves errors info into stderr instead of stdout.

Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: WANG Cong <wangcong@zeuux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
WANG Cong 2008-04-28 02:13:53 -07:00 committed by Linus Torvalds
parent 3595726ac3
commit 626c59f5ed
1 changed files with 6 additions and 8 deletions
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14
arch/um/os-Linux/start_up.c
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@ -25,15 +25,15 @@
#include "registers.h"
#include "skas_ptrace.h"
static int ptrace_child(void)
static void ptrace_child(void)
{
int ret;
/* Calling os_getpid because some libcs cached getpid incorrectly */
int pid = os_getpid(), ppid = getppid();
int sc_result;
change_sig(SIGWINCH, 0);
if (ptrace(PTRACE_TRACEME, 0, 0, 0) < 0) {
if (change_sig(SIGWINCH, 0) < 0 ||
ptrace(PTRACE_TRACEME, 0, 0, 0) < 0) {
perror("ptrace");
kill(pid, SIGKILL);
}
@ -75,9 +75,8 @@ static void fatal(char *fmt, ...)
va_list list;
va_start(list, fmt);
vprintf(fmt, list);
vfprintf(stderr, fmt, list);
va_end(list);
fflush(stdout);
exit(1);
}
@ -87,9 +86,8 @@ static void non_fatal(char *fmt, ...)
va_list list;
va_start(list, fmt);
vprintf(fmt, list);
vfprintf(stderr, fmt, list);
va_end(list);
fflush(stdout);
}
static int start_ptraced_child(void)
@ -495,7 +493,7 @@ int __init parse_iomem(char *str, int *add)
driver = str;
file = strchr(str,',');
if (file == NULL) {
printf("parse_iomem : failed to parse iomem\n");
fprintf(stderr, "parse_iomem : failed to parse iomem\n");
goto out;
}
*file = '\0';