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| author | WANG Cong <xiyou.wangcong@gmail.com> | 2008-04-28 02:13:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:28 -0700 |
| commit | 4415d8a5aaec2008833e1c474b38627c0bc738ca (patch) | |
| tree | ec6c96b7fe46b43f96bf0248ad95420cb7424d07 /arch/um/os-Linux | |
| parent | 074a0db8e17ae271736148809c5f9d47dec2d993 (diff) | |
| download | linux-4415d8a5aaec2008833e1c474b38627c0bc738ca.tar.bz2 | |
arch/um/os-Linux/sys-i386/task_size.c: improve a bit
Improve this code a bit: check sigaction's return value and remove a useless
fflush().
Acked-by: 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/sys-i386/task_size.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/um/os-Linux/sys-i386/task_size.c b/arch/um/os-Linux/sys-i386/task_size.c index 48d211b3d9a1..ccb49b0aff59 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; } |