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remove O_NONBLOCK from stderr

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step1: start a container without tty
	hyper run ubuntu
step2: get the fdinfo of the stderr
	cat /proc/self/fdinfo/2
	pos:	0
	flags:	04001
	mnt_id:	8
it shows that the stderr has the O_NONBLOCK flags,
we should remove it.

Signed-off-by: Lai Jiangshan <jiangshanlai@gmail.com>
This commit is contained in:
Lai Jiangshan
2016-03-05 21:49:38 +08:00
parent c5abeccb65
commit 0b3370f6fa
1 changed files with 2 additions and 1 deletions
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src/exec.c
+2 -1
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@@ -175,10 +175,11 @@ int hyper_setup_exec_tty(struct hyper_exec *e)
if (e->errseq > 0) {
int errpipe[2];
if (pipe2(errpipe, O_NONBLOCK|O_CLOEXEC) < 0) {
if (pipe2(errpipe, O_CLOEXEC) < 0) {
fprintf(stderr, "creating stderr pipe failed\n");
return -1;
}
hyper_setfd_nonblock(errpipe[0]);
e->errev.fd = errpipe[0];
e->errfd = errpipe[1];
}