svn commit: r359471 - stable/12/lib/libpmc/pmu-events
Ed Maste
emaste at FreeBSD.org
Mon Mar 30 22:04:25 UTC 2020
Author: emaste
Date: Mon Mar 30 22:02:27 2020
New Revision: 359471
URL: https://svnweb.freebsd.org/changeset/base/359471
Log:
MFC r339880 (arichardson): Fix get_maxfds() in jevents
If RLIM_INFINITY == -1ULL (such as on macOS) the min() call will result
in a value of less than 1 being returned. This causes nftw() to fail
with EINVAL.
While touching this file also fix includes to work on Linux/macOS and don't
declare snprintf since it may have different attributes in the system
headers there.
Modified:
stable/12/lib/libpmc/pmu-events/jevents.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/lib/libpmc/pmu-events/jevents.c
==============================================================================
--- stable/12/lib/libpmc/pmu-events/jevents.c Mon Mar 30 22:01:36 2020 (r359470)
+++ stable/12/lib/libpmc/pmu-events/jevents.c Mon Mar 30 22:02:27 2020 (r359471)
@@ -34,7 +34,7 @@
*/
-#include <sys/stddef.h>
+#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
@@ -54,8 +54,6 @@
#include "json.h"
#include "jevents.h"
-int snprintf(char * __restrict, size_t, const char * __restrict,
- ...) __printflike(3, 4);
_Noreturn void _Exit(int);
int verbose;
@@ -861,8 +859,11 @@ static int get_maxfds(void)
{
struct rlimit rlim;
- if (getrlimit(RLIMIT_NOFILE, &rlim) == 0)
- return min((int)rlim.rlim_max / 2, 512);
+ if (getrlimit(RLIMIT_NOFILE, &rlim) == 0) {
+ if (rlim.rlim_max == RLIM_INFINITY)
+ return 512;
+ return min((unsigned)rlim.rlim_max / 2, 512);
+ }
return 512;
}
@@ -1123,8 +1124,8 @@ int main(int argc, char *argv[])
mapfile = NULL;
rc = nftw(ldirname, preprocess_arch_std_files, maxfds, 0);
if (rc && verbose) {
- pr_info("%s: Error preprocessing arch standard files %s\n",
- prog, ldirname);
+ pr_info("%s: Error preprocessing arch standard files %s: %s\n",
+ prog, ldirname, strerror(errno));
goto empty_map;
} else if (rc < 0) {
/* Make build fail */
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