Improve this code a bit: check sigaction's return value and remove a useless
fflush().
Cc: Jeff Dike <[EMAIL PROTECTED]>
Signed-off-by: WANG Cong <[EMAIL PROTECTED]>
---
diff --git a/arch/um/os-Linux/sys-i386/task_size.c
b/arch/um/os-Linux/sys-i386/task_size.c
index 48d211b..2b5bba5 100644
--- a/arch/um/os-Linux/sys-i386/task_size.c
+++ b/arch/um/os-Linux/sys-i386/task_size.c
@@ -88,7 +88,10 @@ unsigned long os_get_task_size(void)
sa.sa_handler = segfault;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_NODEFER;
- sigaction(SIGSEGV, &sa, &old);
+ if (sigaction(SIGSEGV, &sa, &old)) {
+ perror("os_get_task_size");
+ exit(1);
+ }
if (!page_ok(bottom)) {
fprintf(stderr, "Address 0x%x no good?\n",
@@ -110,11 +113,12 @@ unsigned long os_get_task_size(void)
out:
/* Restore the old SIGSEGV handling */
- sigaction(SIGSEGV, &old, NULL);
-
+ if (sigaction(SIGSEGV, &old, NULL)) {
+ perror("os_get_task_size");
+ exit(1);
+ }
top <<= UM_KERN_PAGE_SHIFT;
printf("0x%x\n", top);
- fflush(stdout);
return top;
}
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