From eadc84cc01e04f9f74ec2de0c9355be035c7b396 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Sat, 20 Jun 2009 02:01:40 +0200 Subject: perfcounter: Handle some IO return values MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Building perfcounter tools raises the following warnings: builtin-record.c: In function ‘atexit_header’: builtin-record.c:464: erreur: ignoring return value of ‘pwrite’, declared with attribute warn_unused_result builtin-record.c: In function ‘__cmd_record’: builtin-record.c:503: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result builtin-report.c: In function ‘__cmd_report’: builtin-report.c:1403: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result This patch handles these IO return values. Signed-off-by: Frederic Weisbecker Cc: Peter Zijlstra Cc: Mike Galbraith Cc: Paul Mackerras Cc: Frederic Weisbecker LKML-Reference: <1245456100-5477-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar --- tools/perf/builtin-report.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools/perf/builtin-report.c') diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index de1b97845e9..5eb5566f0c9 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -1400,7 +1400,10 @@ static int __cmd_report(void) exit(0); } - read(input, &file_header, sizeof(file_header)); + if (read(input, &file_header, sizeof(file_header)) == -1) { + perror("failed to read file headers"); + exit(-1); + } if (sort__has_parent && !(file_header.sample_type & PERF_SAMPLE_CALLCHAIN)) { -- cgit v1.2.3