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[Qemu-devel] [PATCH 1/2] unix_write: don't block on non-blocking file ha
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH 1/2] unix_write: don't block on non-blocking file handles. |
Date: |
Wed, 9 Jul 2008 14:19:17 +0200 |
Signed-off-by: Gerd Hoffmann <address@hidden>
---
vl.c | 12 +++++++++++-
1 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/vl.c b/vl.c
index 0e98eef..587b91c 100644
--- a/vl.c
+++ b/vl.c
@@ -2119,14 +2119,24 @@ void socket_set_nonblock(int fd)
static int unix_write(int fd, const uint8_t *buf, int len1)
{
+ int nonblock = fcntl(fd, F_GETFL) & O_NONBLOCK;
int ret, len;
len = len1;
while (len > 0) {
ret = write(fd, buf, len);
if (ret < 0) {
- if (errno != EINTR && errno != EAGAIN)
+ if (errno == EINTR) {
+ continue;
+ } else if (errno == EAGAIN) {
+ if (!nonblock)
+ continue;
+ if (len1 != len)
+ break; /* partial write, return written bytes */
+ return -1;
+ } else {
return -1;
+ }
} else if (ret == 0) {
break;
} else {
--
1.5.4.1