diff options
| author | Todd C. Miller <millert@cvs.openbsd.org> | 2015-06-03 02:24:37 +0000 |
|---|---|---|
| committer | Todd C. Miller <millert@cvs.openbsd.org> | 2015-06-03 02:24:37 +0000 |
| commit | 53f83ea972c751a287eed99558f9349e7238bc9f (patch) | |
| tree | 98e3342250c23ad4626e591e9c43381815c024c7 /usr.sbin/smtpd/smtpd.c | |
| parent | cf757a3268b6ecc9b77a4d2c3e3d4932433013a3 (diff) | |
Do not assume that asprintf() clears the pointer on failure, which
is non-portable. Also add missing asprintf() return value checks.
OK deraadt@ guenther@ doug@
Diffstat (limited to 'usr.sbin/smtpd/smtpd.c')
| -rw-r--r-- | usr.sbin/smtpd/smtpd.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/usr.sbin/smtpd/smtpd.c b/usr.sbin/smtpd/smtpd.c index efb3a48b631..820c6750c28 100644 --- a/usr.sbin/smtpd/smtpd.c +++ b/usr.sbin/smtpd/smtpd.c @@ -1,4 +1,4 @@ -/* $OpenBSD: smtpd.c,v 1.238 2015/01/20 17:37:54 deraadt Exp $ */ +/* $OpenBSD: smtpd.c,v 1.239 2015/06/03 02:24:36 millert Exp $ */ /* * Copyright (c) 2008 Gilles Chehade <gilles@poolp.org> @@ -333,6 +333,8 @@ parent_sig_handler(int sig, short event, void *p) /* FALLTHROUGH */ case SIGCHLD: do { + int len; + pid = waitpid(-1, &status, WNOHANG); if (pid <= 0) continue; @@ -340,17 +342,21 @@ parent_sig_handler(int sig, short event, void *p) fail = 0; if (WIFSIGNALED(status)) { fail = 1; - asprintf(&cause, "terminated; signal %d", + len = asprintf(&cause, "terminated; signal %d", WTERMSIG(status)); } else if (WIFEXITED(status)) { if (WEXITSTATUS(status) != 0) { fail = 1; - asprintf(&cause, "exited abnormally"); + len = asprintf(&cause, + "exited abnormally"); } else - asprintf(&cause, "exited okay"); + len = asprintf(&cause, "exited okay"); } else fatalx("smtpd: unexpected cause of SIGCHLD"); + if (len == -1) + fatal("asprintf"); + if (pid == purge_pid) purge_pid = -1; @@ -369,8 +375,12 @@ parent_sig_handler(int sig, short event, void *p) case CHILD_MDA: if (WIFSIGNALED(status) && WTERMSIG(status) == SIGALRM) { - free(cause); - asprintf(&cause, "terminated; timeout"); + char *tmp; + if (asprintf(&tmp, + "terminated; timeout") != -1) { + free(cause); + cause = tmp; + } } else if (child->cause && WIFSIGNALED(status) && |