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authorWANG Cong <xiyou.wangcong@gmail.com>2008-04-28 02:13:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 08:58:28 -0700
commit626c59f5edb284027bfe25cc15e7de2f532090b5 (patch)
treebcc981233e1f44dcb68566f3e63732b6125ad050 /arch/um/os-Linux
parent3595726ac349ca9682703535e9a999c4f08c2d80 (diff)
downloadblackbird-op-linux-626c59f5edb284027bfe25cc15e7de2f532090b5.tar.gz
blackbird-op-linux-626c59f5edb284027bfe25cc15e7de2f532090b5.zip
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>
Diffstat (limited to 'arch/um/os-Linux')
-rw-r--r--arch/um/os-Linux/start_up.c14
1 files 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';
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