[PATCH 05/14] perf data: Make check_backup work over directories

From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Andi Kleen <ak@linux.intel.com>,
	Stephane Eranian <eranian@google.com>,
	Alexey Budankov <alexey.budankov@linux.intel.com>
Subject: [PATCH 05/14] perf data: Make check_backup work over directories
Date: Sun,  3 Feb 2019 16:30:09 +0100	[thread overview]
Message-ID: <20190203153018.9650-6-jolsa@kernel.org> (raw)
In-Reply-To: <20190203153018.9650-1-jolsa@kernel.org>

Changing check_backup to work also over directory
path. Also moving the call earlier in the path,
so it can rename also directory data.

Link: http://lkml.kernel.org/n/tip-j4lwm20en1yk1hsaqb8zpxkr@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/util/data.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index e16d06ed1100..0a3051cc0ea0 100644
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -37,12 +37,15 @@ static int check_backup(struct perf_data *data)
 {
 	struct stat st;
 
+	if (perf_data__is_read(data))
+		return 0;
+
 	if (!stat(data->path, &st) && st.st_size) {
 		/* TODO check errors properly */
 		char oldname[PATH_MAX];
 		snprintf(oldname, sizeof(oldname), "%s.old",
 			 data->path);
-		unlink(oldname);
+		rm_rf(oldname);
 		rename(data->path, oldname);
 	}
 
@@ -95,9 +98,6 @@ static int open_file_write(struct perf_data *data)
 	int fd;
 	char sbuf[STRERR_BUFSIZE];
 
-	if (check_backup(data))
-		return -1;
-
 	fd = open(data->file.path, O_CREAT|O_RDWR|O_TRUNC|O_CLOEXEC,
 		  S_IRUSR|S_IWUSR);
 
@@ -141,6 +141,9 @@ int perf_data__open(struct perf_data *data)
 	if (!data->path)
 		data->path = "perf.data";
 
+	if (check_backup(data))
+		return -1;
+
 	return open_file_dup(data);
 }
 
-- 
2.17.2

