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perf_counter tools: Guard against record damaging existing files

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Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mike Galbraith 2009-05-28 16:28:53 +02:00 committed by Ingo Molnar
parent 22a4f650d6
commit 229c4eedce
1 changed files with 1 additions and 1 deletions
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Documentation/perf_counter/builtin-record.c
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@ -340,7 +340,7 @@ static int __cmd_record(int argc, const char **argv)
assert(nr_cpus <= MAX_NR_CPUS); assert(nr_cpus <= MAX_NR_CPUS);
assert(nr_cpus >= 0); assert(nr_cpus >= 0);
output = open(output_name, O_CREAT|O_RDWR, S_IRWXU); output = open(output_name, O_CREAT|O_EXCL|O_RDWR, S_IRWXU);
if (output < 0) { if (output < 0) {
perror("failed to create output file"); perror("failed to create output file");
exit(-1); exit(-1);