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perf record: Rename perf.data to perf.data.old if --force/-f is used

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Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260828571-3613-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo 2009-12-14 20:09:30 -02:00 committed by Ingo Molnar
parent c8829c7a31
commit b38d34645c
1 changed files with 13 additions and 4 deletions
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17
tools/perf/builtin-record.c
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@ -421,10 +421,19 @@ static int __cmd_record(int argc, const char **argv)
signal(SIGINT, sig_handler);
if (!stat(output_name, &st) && st.st_size) {
if (!force && !append_file) {
fprintf(stderr, "Error, output file %s exists, use -A to append or -f to overwrite.\n",
output_name);
exit(-1);
if (!force) {
if (!append_file) {
pr_err("Error, output file %s exists, use -A "
"to append or -f to overwrite.\n",
output_name);
exit(-1);
}
} else {
char oldname[PATH_MAX];
snprintf(oldname, sizeof(oldname), "%s.old",
output_name);
unlink(oldname);
rename(output_name, oldname);
}
} else {
append_file = 0;