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ustream-fd: retry partial writes

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
This commit is contained in:
Felix Fietkau 2013-01-22 10:09:55 +01:00
parent 220958b7d9
commit f15ceb8ced
1 changed files with 17 additions and 12 deletions
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29
ustream-fd.c
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@ -83,28 +83,33 @@ static void ustream_fd_read_pending(struct ustream_fd *sf, bool *more)
static int ustream_fd_write(struct ustream *s, const char *buf, int buflen, bool more) static int ustream_fd_write(struct ustream *s, const char *buf, int buflen, bool more)
{ {
struct ustream_fd *sf = container_of(s, struct ustream_fd, stream); struct ustream_fd *sf = container_of(s, struct ustream_fd, stream);
ssize_t len; ssize_t ret = 0, len;
if (!buflen) if (!buflen)
return 0; return 0;
retry: while (buflen) {
len = write(sf->fd.fd, buf, buflen); len = write(sf->fd.fd, buf, buflen);
if (!len)
goto retry;
if (len < 0) { if (len < 0) {
if (errno == EINTR) if (errno == EINTR)
goto retry; continue;
if (errno == EAGAIN || errno == EWOULDBLOCK) if (errno == EAGAIN || errno == EWOULDBLOCK)
len = 0; break;
return -1;
}
ret += len;
buf += len;
buflen -= len;
} }
if (len >= 0 && len < buflen) if (buflen)
ustream_fd_set_uloop(s, true); ustream_fd_set_uloop(s, true);
return len; return ret;
} }
static bool __ustream_fd_poll(struct ustream_fd *sf, unsigned int events) static bool __ustream_fd_poll(struct ustream_fd *sf, unsigned int events)