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nbd/client.c: use errp instead of LOG

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Move to modern errp scheme from just LOGging errors.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20170526110913.89098-1-vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2017-05-26 14:09:13 +03:00 committed by Paolo Bonzini
parent e44ed99d19
commit be41c100c0
5 changed files with 30 additions and 17 deletions
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7
block/nbd-client.c
View File

@ -28,6 +28,7 @@
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "nbd-client.h"
#define HANDLE_TO_INDEX(bs, handle) ((handle) ^ ((uint64_t)(intptr_t)bs))
@ -70,10 +71,14 @@ static coroutine_fn void nbd_read_reply_entry(void *opaque)
NBDClientSession *s = opaque;
uint64_t i;
int ret;
Error *local_err = NULL;
for (;;) {
assert(s->reply.handle == 0);
ret = nbd_receive_reply(s->ioc, &s->reply);
ret = nbd_receive_reply(s->ioc, &s->reply, &local_err);
if (ret < 0) {
error_report_err(local_err);
}
if (ret <= 0) {
break;
}

5
include/block/nbd.h
View File

@ -133,9 +133,10 @@ int nbd_receive_negotiate(QIOChannel *ioc, const char *name, uint16_t *flags,
QCryptoTLSCreds *tlscreds, const char *hostname,
QIOChannel **outioc,
off_t *size, Error **errp);
int nbd_init(int fd, QIOChannelSocket *sioc, uint16_t flags, off_t size);
int nbd_init(int fd, QIOChannelSocket *sioc, uint16_t flags, off_t size,
Error **errp);
ssize_t nbd_send_request(QIOChannel *ioc, NBDRequest *request);
ssize_t nbd_receive_reply(QIOChannel *ioc, NBDReply *reply);
ssize_t nbd_receive_reply(QIOChannel *ioc, NBDReply *reply, Error **errp);
int nbd_client(int fd);
int nbd_disconnect(int fd);

30
nbd/client.c
View File

@ -627,11 +627,13 @@ fail:
}
#ifdef __linux__
int nbd_init(int fd, QIOChannelSocket *sioc, uint16_t flags, off_t size)
int nbd_init(int fd, QIOChannelSocket *sioc, uint16_t flags, off_t size,
Error **errp)
{
unsigned long sectors = size / BDRV_SECTOR_SIZE;
if (size / BDRV_SECTOR_SIZE != sectors) {
LOG("Export size %lld too large for 32-bit kernel", (long long) size);
error_setg(errp, "Export size %lld too large for 32-bit kernel",
(long long) size);
return -E2BIG;
}
@ -639,7 +641,7 @@ int nbd_init(int fd, QIOChannelSocket *sioc, uint16_t flags, off_t size)
if (ioctl(fd, NBD_SET_SOCK, (unsigned long) sioc->fd) < 0) {
int serrno = errno;
LOG("Failed to set NBD socket");
error_setg(errp, "Failed to set NBD socket");
return -serrno;
}
@ -647,7 +649,7 @@ int nbd_init(int fd, QIOChannelSocket *sioc, uint16_t flags, off_t size)
if (ioctl(fd, NBD_SET_BLKSIZE, (unsigned long)BDRV_SECTOR_SIZE) < 0) {
int serrno = errno;
LOG("Failed setting NBD block size");
error_setg(errp, "Failed setting NBD block size");
return -serrno;
}
@ -659,7 +661,7 @@ int nbd_init(int fd, QIOChannelSocket *sioc, uint16_t flags, off_t size)
if (ioctl(fd, NBD_SET_SIZE_BLOCKS, sectors) < 0) {
int serrno = errno;
LOG("Failed setting size (in blocks)");
error_setg(errp, "Failed setting size (in blocks)");
return -serrno;
}
@ -670,12 +672,12 @@ int nbd_init(int fd, QIOChannelSocket *sioc, uint16_t flags, off_t size)
if (ioctl(fd, BLKROSET, (unsigned long) &read_only) < 0) {
int serrno = errno;
LOG("Failed setting read-only attribute");
error_setg(errp, "Failed setting read-only attribute");
return -serrno;
}
} else {
int serrno = errno;
LOG("Failed setting flags");
error_setg(errp, "Failed setting flags");
return -serrno;
}
}
@ -723,8 +725,10 @@ int nbd_disconnect(int fd)
}
#else
int nbd_init(int fd, QIOChannelSocket *ioc, uint16_t flags, off_t size)
int nbd_init(int fd, QIOChannelSocket *ioc, uint16_t flags, off_t size,
Error **errp)
{
error_setg(errp, "nbd_init is only supported on Linux");
return -ENOTSUP;
}
@ -758,19 +762,19 @@ ssize_t nbd_send_request(QIOChannel *ioc, NBDRequest *request)
return write_sync(ioc, buf, sizeof(buf), NULL);
}
ssize_t nbd_receive_reply(QIOChannel *ioc, NBDReply *reply)
ssize_t nbd_receive_reply(QIOChannel *ioc, NBDReply *reply, Error **errp)
{
uint8_t buf[NBD_REPLY_SIZE];
uint32_t magic;
ssize_t ret;
ret = read_sync_eof(ioc, buf, sizeof(buf), NULL);
ret = read_sync_eof(ioc, buf, sizeof(buf), errp);
if (ret <= 0) {
return ret;
}
if (ret != sizeof(buf)) {
LOG("read failed");
error_setg(errp, "read failed");
return -EINVAL;
}
@ -788,7 +792,7 @@ ssize_t nbd_receive_reply(QIOChannel *ioc, NBDReply *reply)
if (reply->error == ESHUTDOWN) {
/* This works even on mingw which lacks a native ESHUTDOWN */
LOG("server shutting down");
error_setg(errp, "server shutting down");
return -EINVAL;
}
TRACE("Got reply: { magic = 0x%" PRIx32 ", .error = % " PRId32
@ -796,7 +800,7 @@ ssize_t nbd_receive_reply(QIOChannel *ioc, NBDReply *reply)
magic, reply->error, reply->handle);
if (magic != NBD_REPLY_MAGIC) {
LOG("invalid magic (got 0x%" PRIx32 ")", magic);
error_setg(errp, "invalid magic (got 0x%" PRIx32 ")", magic);
return -EINVAL;
}
return sizeof(buf);

3
qemu-nbd.c
View File

@ -288,8 +288,9 @@ static void *nbd_client_thread(void *arg)
goto out_socket;
}
ret = nbd_init(fd, sioc, nbdflags, size);
ret = nbd_init(fd, sioc, nbdflags, size, &local_error);
if (ret < 0) {
error_report_err(local_error);
goto out_fd;
}

2
tests/qemu-iotests/083.out
View File

@ -69,10 +69,12 @@ read failed: Input/output error
=== Check disconnect 4 reply ===
read failed
read failed: Input/output error
=== Check disconnect 8 reply ===
read failed
read failed: Input/output error
=== Check disconnect before data ===