perf daemon: Fix control fifo permissions

Add proper mode for mkfifo calls to get read and write permissions for
user. We can't use O_RDWR in here, changing to standard permission
value.

Fixes: 6a6d1804a190 ("perf daemon: Set control fifo for session")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210301122510.64402-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-daemon.c b/tools/perf/builtin-daemon.c
index 617feaf..8f0ed2e 100644 (file)
--- a/tools/perf/builtin-daemon.c
+++ b/tools/perf/builtin-daemon.c
@@ -373,12 +373,12 @@ static int daemon_session__run(struct daemon_session *session,
        dup2(fd, 2);
        close(fd);
 
-       if (mkfifo(SESSION_CONTROL, O_RDWR) && errno != EEXIST) {
+       if (mkfifo(SESSION_CONTROL, 0600) && errno != EEXIST) {
                perror("failed: create control fifo");
                return -1;
        }
 
-       if (mkfifo(SESSION_ACK, O_RDWR) && errno != EEXIST) {
+       if (mkfifo(SESSION_ACK, 0600) && errno != EEXIST) {
                perror("failed: create ack fifo");
                return -1;
        }