Commit-ID: cd6379ebb55ae53e77f17e22ce830bf3fe826736 Gitweb: http://git.kernel.org/tip/cd6379ebb55ae53e77f17e22ce830bf3fe826736 Author: Jiri Olsa <[email protected]> AuthorDate: Fri, 8 Sep 2017 10:46:20 +0200 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Tue, 12 Sep 2017 12:34:23 -0300
perf tools: Open perf.data with O_CLOEXEC flag Do not carry the perf.data file descriptor into the workload process and close it when perf executes the workload. Signed-off-by: Jiri Olsa <[email protected]> Cc: David Ahern <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] [ Add definitions for O_CLOEXEC for older systems ] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/data.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c index e84bbc8..263f5a9 100644 --- a/tools/perf/util/data.c +++ b/tools/perf/util/data.c @@ -10,6 +10,16 @@ #include "util.h" #include "debug.h" +#ifndef O_CLOEXEC +#ifdef __sparc__ +#define O_CLOEXEC 0x400000 +#elif defined(__alpha__) || defined(__hppa__) +#define O_CLOEXEC 010000000 +#else +#define O_CLOEXEC 02000000 +#endif +#endif + static bool check_pipe(struct perf_data_file *file) { struct stat st; @@ -96,7 +106,8 @@ static int open_file_write(struct perf_data_file *file) if (check_backup(file)) return -1; - fd = open(file->path, O_CREAT|O_RDWR|O_TRUNC, S_IRUSR|S_IWUSR); + fd = open(file->path, O_CREAT|O_RDWR|O_TRUNC|O_CLOEXEC, + S_IRUSR|S_IWUSR); if (fd < 0) pr_err("failed to open %s : %s\n", file->path,
