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virExec: avoid uninitialized memory usage

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valgrind warns:

==21079== Syscall param rt_sigaction(act->sa_mask) points to uninitialised byte(s)
==21079==    at 0x329840F63E: __libc_sigaction (sigaction.c:67)
==21079==    by 0x4E5A8E7: __virExec (util.c:661)

Regression introduced in commit ab07533e.  Technically, sa_mask
shouldn't affect operation if sa_flags selects sa_handler, and
sa_handler selects SIG_IGN, but better safe than sorry.

* src/util/util.c (__virExec): Supply missing sigemptyset.
This commit is contained in:
Eric Blake 2011-02-21 14:27:04 -07:00
parent 4f2094a8a6
commit fd21ecfd49
1 changed files with 1 additions and 0 deletions
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src/util/util.c
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@ -657,6 +657,7 @@ __virExec(const char *const*argv,
struct sigaction waxon, waxoff;
waxoff.sa_handler = SIG_IGN;
waxoff.sa_flags = 0;
sigemptyset(&waxoff.sa_mask);
memset(&waxon, 0, sizeof(waxon));
if (sigaction(SIGPIPE, &waxoff, &waxon) < 0) {
virReportSystemError(errno, "%s",