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merge branch 'pr-2481'

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Tianjia Zhang (1):
  nsenter: fix repeat close() operations

LGTMs: @kolyshkin @cyphar
Closes #2481
This commit is contained in:
Aleksa Sarai
2020-06-20 12:18:31 +10:00
parent dff7685c18 04806abd39
commit 0fa097fc37
1 changed files with 6 additions and 6 deletions
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libcontainer/nsenter/nsexec.c
+6 -6
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@@ -714,12 +714,12 @@ void nsexec(void)
* ready, so we can receive all possible error codes
* generated by children.
*/
syncfd = sync_child_pipe[1];
close(sync_child_pipe[0]);
while (!ready) {
enum sync_t s;
syncfd = sync_child_pipe[1];
close(sync_child_pipe[0]);
if (read(syncfd, &s, sizeof(s)) != sizeof(s))
bail("failed to sync with child: next state");
@@ -789,13 +789,13 @@ void nsexec(void)
/* Now sync with grandchild. */
syncfd = sync_grandchild_pipe[1];
close(sync_grandchild_pipe[0]);
ready = false;
while (!ready) {
enum sync_t s;
syncfd = sync_grandchild_pipe[1];
close(sync_grandchild_pipe[0]);
s = SYNC_GRANDCHILD;
if (write(syncfd, &s, sizeof(s)) != sizeof(s)) {
kill(child, SIGKILL);