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usock: fix poll return code check

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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>
This commit is contained in:
Felix Fietkau 2023-03-08 09:38:53 +01:00
parent eac92a4d5d
commit ef5e8e38bd
1 changed files with 1 additions and 4 deletions
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5
usock.c
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@ -120,10 +120,7 @@ static int poll_restart(struct pollfd *fds, int nfds, int timeout)
while (1) { while (1) {
ret = poll(fds, nfds, timeout); ret = poll(fds, nfds, timeout);
if (ret == EAGAIN) if (ret >= 0 || (errno != EINTR && errno != EAGAIN))
continue;
if (ret != EINTR)
return ret; return ret;
clock_gettime(CLOCK_MONOTONIC, &cur); clock_gettime(CLOCK_MONOTONIC, &cur);