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pipefs: change how HUP/ERR is handled

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Matheus
2026-06-03 19:46:15 -03:00
parent 008cfd9b63
commit 0f8b1ac5a6
1 changed files with 8 additions and 8 deletions
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kernel-src/fs/pipefs.c
+8 -8
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@@ -113,21 +113,21 @@ static int internalpoll(vnode_t *node, polldata_t *data, int events) {
pipenode_t *pipenode = (pipenode_t *)node;
int revents = 0;
if (pipenode->writers == 0 && pipenode->open)
revents |= POLLHUP;
if (pipenode->readers == 0 && pipenode->open)
revents |= POLLHUP;
if (events & POLLIN) {
events |= POLLHUP;
if (pipenode->writers == 0 && pipenode->open)
revents |= POLLHUP;
if (RINGBUFFER_DATACOUNT(&pipenode->data) > 0)
revents |= POLLIN;
}
if (events & POLLOUT) {
events |= POLLERR;
if (pipenode->readers == 0 && pipenode->open)
revents |= POLLERR;
// poll will only return POLLOUT if an atomic write can be done without blocking
// this is undocumented in POSIX but many unices implement it like this
else if (RINGBUFFER_DATACOUNT(&pipenode->data) < BUFFER_SIZE - PIPE_ATOMIC_SIZE)
if (RINGBUFFER_DATACOUNT(&pipenode->data) < BUFFER_SIZE - PIPE_ATOMIC_SIZE)
revents |= POLLOUT;
}
@@ -231,7 +231,7 @@ int pipefs_write(vnode_t *node, iovec_iterator_t *iovec_iterator, size_t size, u
while (1) {
// check for space or if the read end has been closed
int revents = internalpoll(node, NULL, POLLOUT);
if (revents & POLLERR)
if (revents & (POLLERR | POLLHUP))
break;
size_t freebytes = RINGBUFFER_FREESPACE(&pipenode->data);