From: Felix Fietkau <nbd@nbd.name>
Date: Wed, 8 Mar 2023 08:38:53 +0000 (+0100)
Subject: usock: fix poll return code check
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=ef5e8e38bd38f26e2da2f6f0a2d720468c935280;p=project%2Flibubox.git

usock: fix poll return code check

errno needs to be compared against EINTR/EAGAIN instead of the return code,
and only if the return code is < 0.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/usock.c b/usock.c
index 0ce5390..15b6988 100644
--- a/usock.c
+++ b/usock.c
@@ -120,10 +120,7 @@ static int poll_restart(struct pollfd *fds, int nfds, int timeout)
 
 	while (1) {
 		ret = poll(fds, nfds, timeout);
-		if (ret == EAGAIN)
-			continue;
-
-		if (ret != EINTR)
+		if (ret >= 0 || (errno != EINTR && errno != EAGAIN))
 			return ret;
 
 		clock_gettime(CLOCK_MONOTONIC, &cur);