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perf util: Replace strerror with strerror_r for thread-safety

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Replaces all strerror with strerror_r in util for making the perf lib
thread-safe.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naohiro Aota <naota@elisp.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20140814022236.3545.3367.stgit@kbuild-fedora.novalocal
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Masami Hiramatsu
2014-08-14 02:22:36 +00:00
committed by Arnaldo Carvalho de Melo
parent 5f03cba415
commit 6e81c74cbf
8 changed files with 36 additions and 14 deletions
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8
tools/perf/util/data.c
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@@ -50,12 +50,14 @@ static int open_file_read(struct perf_data_file *file)
{
struct stat st;
int fd;
char sbuf[STRERR_BUFSIZE];
fd = open(file->path, O_RDONLY);
if (fd < 0) {
int err = errno;
pr_err("failed to open %s: %s", file->path, strerror(err));
pr_err("failed to open %s: %s", file->path,
strerror_r(err, sbuf, sizeof(sbuf)));
if (err == ENOENT && !strcmp(file->path, "perf.data"))
pr_err(" (try 'perf record' first)");
pr_err("\n");
@@ -88,6 +90,7 @@ static int open_file_read(struct perf_data_file *file)
static int open_file_write(struct perf_data_file *file)
{
int fd;
char sbuf[STRERR_BUFSIZE];
if (check_backup(file))
return -1;
@@ -95,7 +98,8 @@ static int open_file_write(struct perf_data_file *file)
fd = open(file->path, O_CREAT|O_RDWR|O_TRUNC, S_IRUSR|S_IWUSR);
if (fd < 0)
pr_err("failed to open %s : %s\n", file->path, strerror(errno));
pr_err("failed to open %s : %s\n", file->path,
strerror_r(errno, sbuf, sizeof(sbuf)));
return fd;
}