From: Gerd Hoffmann <kraxel@redhat.com>
To: Amit Shah <amit.shah@redhat.com>
Cc: Paul Brook <paul@codesourcery.com>,
qemu list <qemu-devel@nongnu.org>,
Juan Quintela <quintela@redhat.com>
Subject: [Qemu-devel] Re: [PATCH v5 3/6] char: Let writers know how much data was written in case of errors
Date: Tue, 04 May 2010 13:24:58 +0200 [thread overview]
Message-ID: <4BE0040A.3020906@redhat.com> (raw)
In-Reply-To: <1272970367-24647-4-git-send-email-amit.shah@redhat.com>
> @@ -531,8 +534,12 @@ static int unix_write(int fd, const uint8_t *buf, int len1)
> while (len> 0) {
> ret = write(fd, buf, len);
> if (ret< 0) {
> - if (errno != EINTR&& errno != EAGAIN)
> + if (len1 - len) {
> + return len1 - len;
> + }
> + if (errno != EINTR&& errno != EAGAIN) {
> return -1;
> + }
This makes unix_write pass -EINTR up to the caller which it didn't before.
cheers,
Gerd
next prev parent reply other threads:[~2010-05-04 11:26 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-04 10:52 [Qemu-devel] [PATCH v5 0/6] char: non-blocking writes, virtio-console flow control Amit Shah
2010-05-04 10:52 ` [Qemu-devel] [PATCH v5 1/6] virtio-console: Factor out common init between console and generic ports Amit Shah
2010-05-04 10:52 ` [Qemu-devel] [PATCH v5 2/6] char: Add a QemuChrHandlers struct to initialise chardev handlers Amit Shah
2010-05-04 10:52 ` [Qemu-devel] [PATCH v5 3/6] char: Let writers know how much data was written in case of errors Amit Shah
2010-05-04 10:52 ` [Qemu-devel] [PATCH v5 4/6] char: Add qemu_chr_write_nb() for nonblocking writes Amit Shah
2010-05-04 10:52 ` [Qemu-devel] [PATCH v5 5/6] char: unix/tcp: Add a non-blocking write handler Amit Shah
2010-05-04 10:52 ` [Qemu-devel] [PATCH v5 6/6] virtio-console: Throttle virtio-serial-bus if we can't consume any more guest data Amit Shah
2010-05-04 11:24 ` Gerd Hoffmann [this message]
2010-05-04 11:31 ` [Qemu-devel] Re: [PATCH v5 3/6] char: Let writers know how much data was written in case of errors Amit Shah
2010-05-04 13:30 ` Gerd Hoffmann
2010-05-04 20:09 ` [Qemu-devel] [PATCH v5 2/6] char: Add a QemuChrHandlers struct to initialise chardev handlers Blue Swirl
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