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| author | jhb <jhb@FreeBSD.org> | 2011-02-15 12:42:18 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2011-02-15 12:42:18 +0000 |
| commit | 6190d8e2a6dec7a9ceca17a8a097edf734d595a7 (patch) | |
| tree | 1a3489e39f252ff2b69d05255a405f395ea0917c /usr.bin | |
| parent | d20e0514a9bbaa474f28ba4e7acdcd82eb34d41d (diff) | |
| download | FreeBSD-src-6190d8e2a6dec7a9ceca17a8a097edf734d595a7.zip FreeBSD-src-6190d8e2a6dec7a9ceca17a8a097edf734d595a7.tar.gz | |
Properly check for errors from waitpid().
Submitted by: gcooper
MFC after: 1 week
Diffstat (limited to 'usr.bin')
| -rw-r--r-- | usr.bin/truss/setup.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/usr.bin/truss/setup.c b/usr.bin/truss/setup.c index bf23ec7..42c8235 100644 --- a/usr.bin/truss/setup.c +++ b/usr.bin/truss/setup.c @@ -83,7 +83,7 @@ setup_and_wait(char *command[]) } /* Only in the parent here */ - if (waitpid(pid, &waitval, 0) < -1) { + if (waitpid(pid, &waitval, 0) < 0) { err(1, "unexpect stop in waitpid"); return 0; } @@ -114,7 +114,7 @@ start_tracing(int pid) err(1, "can not attach to target process"); child_pid = pid; - if (waitpid(pid, &waitval, 0) < -1) + if (waitpid(pid, &waitval, 0) < 0) err(1, "Unexpect stop in waitpid"); return (0); @@ -133,7 +133,7 @@ restore_proc(int signo __unused) /* stop the child so that we can detach */ kill(child_pid, SIGSTOP); - if (waitpid(child_pid, &waitval, 0) < -1) + if (waitpid(child_pid, &waitval, 0) < 0) err(1, "Unexpected stop in waitpid"); if (ptrace(PT_DETACH, child_pid, (caddr_t)1, 0) < 0) @@ -183,7 +183,7 @@ waitevent(struct trussinfo *info) ptrace(PT_SYSCALL, info->pid, (caddr_t)1, pending_signal); pending_signal = 0; - if (waitpid(info->pid, &waitval, 0) < -1) { + if (waitpid(info->pid, &waitval, 0) < 0) { err(1, "Unexpected stop in waitpid"); } |
