strsignal() isn't thread-safety but sys_siglist[] is. Also, according to
the glibc manual, BSD has sys_siglist[] but not strsignal().
Signed-off-by: Ben Pfaff <b...@nicira.com>
---
configure.ac | 3 ++-
lib/signals.c | 8 ++++++--
2 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/configure.ac b/configure.ac
index 7af8afb..8364ea5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -58,9 +58,10 @@ OVS_CHECK_DOT
OVS_CHECK_IF_PACKET
OVS_CHECK_IF_DL
OVS_CHECK_STRTOK_R
+AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>]])
AC_CHECK_MEMBERS([struct stat.st_mtim.tv_nsec, struct stat.st_mtimensec],
[], [], [[#include <sys/stat.h>]])
-AC_CHECK_FUNCS([mlockall strnlen strsignal getloadavg statvfs setmntent])
+AC_CHECK_FUNCS([mlockall strnlen getloadavg statvfs setmntent])
AC_CHECK_HEADERS([mntent.h sys/statvfs.h linux/types.h linux/if_ether.h])
OVS_CHECK_PKIDIR
diff --git a/lib/signals.c b/lib/signals.c
index 06c2e75..09e0e09 100644
--- a/lib/signals.c
+++ b/lib/signals.c
@@ -147,9 +147,13 @@ const char *
signal_name(int signum)
{
const char *name = NULL;
-#ifdef HAVE_STRSIGNAL
- name = strsignal(signum);
+
+#if HAVE_DECL_SYS_SIGLIST
+ if (signum >= 0 && signum < ARRAY_SIZE(sys_siglist)) {
+ name = sys_siglist[signum];
+ }
#endif
+
if (!name) {
static char buffer[7 + INT_STRLEN(int) + 1];
sprintf(buffer, "signal %d", signum);
--
1.7.2.5
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