From 626c59f5edb284027bfe25cc15e7de2f532090b5 Mon Sep 17 00:00:00 2001
From: WANG Cong <xiyou.wangcong@gmail.com>
Date: Mon, 28 Apr 2008 02:13:53 -0700
Subject: [PATCH] arch/um/os-Linux/start_up.c: various improvements.
- 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>
---
arch/um/os-Linux/start_up.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index b616e15638fb..997d01944f91 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -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';
--
2.20.1