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On Linux, call prctl to disable core dumps

Browse source 
Whenever I forget to turn off corekeeper, the regression tests
take ages to record all test-segfault's crashes.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=83772
Reviewed-by: Alban Crequy <alban.crequy@collabora.co.uk>
This commit is contained in:
Simon McVittie 2014-09-15 11:50:48 +01:00
parent 467f7a6d42
commit ae50d46ff2
2 changed files with 21 additions and 1 deletions
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4
configure.ac
View file

@ -598,6 +598,10 @@ if test "x$ac_cv_header_syslog_h" = "xyes"; then
AC_CHECK_DECLS([LOG_PERROR], [], [], [[#include <syslog.h>]]) AC_CHECK_DECLS([LOG_PERROR], [], [], [[#include <syslog.h>]])
fi fi
# For test-segfault.c
AC_CHECK_HEADERS_ONCE([sys/prctl.h])
AC_CHECK_FUNCS_ONCE([prctl raise])
#### Check for broken poll; taken from Glib's configure #### Check for broken poll; taken from Glib's configure
AC_MSG_CHECKING([for broken poll]) AC_MSG_CHECKING([for broken poll])

16
test/test-segfault.c
View file

@ -9,18 +9,34 @@
#include <sys/resource.h> #include <sys/resource.h>
#endif #endif
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
int int
main (int argc, char **argv) main (int argc, char **argv)
{ {
char *p; char *p;
#if HAVE_SETRLIMIT #if HAVE_SETRLIMIT
/* No core dumps please, we know we crashed. */
struct rlimit r = { 0, }; struct rlimit r = { 0, };
getrlimit (RLIMIT_CORE, &r); getrlimit (RLIMIT_CORE, &r);
r.rlim_cur = 0; r.rlim_cur = 0;
setrlimit (RLIMIT_CORE, &r); setrlimit (RLIMIT_CORE, &r);
#endif
#if defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE)
/* Really, no core dumps please. On Linux, if core_pattern is
* set to a pipe (for abrt/apport/corekeeper/etc.), RLIMIT_CORE of 0
* is ignored (deliberately, so people can debug init(8) and other
* early stuff); but Linux has PR_SET_DUMPABLE, so we can avoid core
* dumps anyway. */
prctl (PR_SET_DUMPABLE, 0, 0, 0, 0);
#endif
#ifdef HAVE_RAISE
raise (SIGSEGV); raise (SIGSEGV);
#endif #endif
p = NULL; p = NULL;