On 6/16/23 17:27, Bin Meng wrote:
When opening /proc/self/fd fails, current codes just return directly,
but we can fall back to close fds one by one.
Signed-off-by: Bin Meng <bm...@tinylab.org>
---
(no changes since v1)
util/async-teardown.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/util/async-teardown.c b/util/async-teardown.c
index 3ab19c8740..7e0177a8da 100644
--- a/util/async-teardown.c
+++ b/util/async-teardown.c
@@ -48,7 +48,11 @@ static void close_all_open_fd(void)
dir = opendir("/proc/self/fd");
if (!dir) {
- /* If /proc is not mounted, there is nothing that can be done. */
+ /* If /proc is not mounted, close fds one by one. */
+ int open_max = sysconf(_SC_OPEN_MAX), i;
+ for (i = 0; i < open_max; i++) {
+ close(i);
+ }
return;
}
/* Avoid closing the directory. */
Do we really need to make the 1M close calls?
The process is on its way to exit anyway...
r~
