[PATCH 25/86] perf trace beauty fcntl: Augment the return of F_DUPFD(_CLOEXEC)

Arnaldo Carvalho de Melo
2017-07-19T14:32:24Z

From: Arnaldo Carvalho de Melo <acme@redhat.com>

Using the existing 'fd' beautifier, now we can see the path for the just
dup'ed fd:

18031.338 ( 0.009 ms): gnome-terminal/2472 fcntl(fd: 55, cmd: DUPFD_CLOEXEC) = 56</memfd:gdk-wayland (deleted)>

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-z0ggo126p2eobfwnjw9z16tw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/trace/beauty/fcntl.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/perf/trace/beauty/fcntl.c b/tools/perf/trace/beauty/fcntl.c
index 9de80a7eddfa..254ae435780d 100644
--- a/tools/perf/trace/beauty/fcntl.c
+++ b/tools/perf/trace/beauty/fcntl.c
@@ -30,6 +30,10 @@ size_t syscall_arg__scnprintf_fcntl_cmd(char *bf, size_t size, struct syscall_ar
syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_fcntl_getfd);
goto mask_arg;
}
+ if (arg->val == F_DUPFD_CLOEXEC || arg->val == F_DUPFD) {
+ syscall_arg__set_ret_scnprintf(arg, syscall_arg__scnprintf_fd);
+ goto out;
+ }
/*
* Some commands ignore the third fcntl argument, "arg", so mask it
*/
@@ -38,7 +42,7 @@ size_t syscall_arg__scnprintf_fcntl_cmd(char *bf, size_t size, struct syscall_ar
mask_arg:
arg->mask |= (1 << 2);
}
-
+out:
return syscall_arg__scnprintf_strarrays(bf, size, arg);
}

--
2.9.4