[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PULL 12/54] nbd: correctly propagate errors
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PULL 12/54] nbd: correctly propagate errors |
Date: |
Fri, 21 Feb 2014 23:12:09 +0100 |
From: Paolo Bonzini <address@hidden>
Before:
$ ./qemu-io-old
qemu-io-old> open -r -o file.driver=nbd
one of path and host must be specified.
qemu-io-old: can't open device (null): Could not open image: Invalid
argument
$ ./qemu-io-old
qemu-io-old> open -r -o file.driver=nbd,file.host=foo,file.path=bar
path and host may not be used at the same time.
qemu-io-old: can't open device (null): Could not open image: Invalid
argument
After:
$ ./qemu-io
qemu-io> open -r -o file.driver=nbd
qemu-io: can't open device (null): one of path and host must be specified.
$ ./qemu-io
qemu-io> open -r -o file.driver=nbd,file.host=foo,file.path=bar
qemu-io: can't open device (null): path and host may not be used at the
same time.
Signed-off-by: Paolo Bonzini <address@hidden>
Reviewed-by: Fam Zheng <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
block/nbd.c | 34 ++++++++++++++++------------------
include/block/nbd.h | 1 -
nbd.c | 12 ------------
tests/qemu-iotests/051.out | 6 ++----
4 files changed, 18 insertions(+), 35 deletions(-)
diff --git a/block/nbd.c b/block/nbd.c
index a83e856..5512423 100644
--- a/block/nbd.c
+++ b/block/nbd.c
@@ -188,19 +188,18 @@ out:
g_free(file);
}
-static int nbd_config(BDRVNBDState *s, QDict *options, char **export)
+static void nbd_config(BDRVNBDState *s, QDict *options, char **export,
+ Error **errp)
{
Error *local_err = NULL;
if (qdict_haskey(options, "path") == qdict_haskey(options, "host")) {
if (qdict_haskey(options, "path")) {
- qerror_report(ERROR_CLASS_GENERIC_ERROR, "path and host may not "
- "be used at the same time.");
+ error_setg(errp, "path and host may not be used at the same
time.");
} else {
- qerror_report(ERROR_CLASS_GENERIC_ERROR, "one of path and host "
- "must be specified.");
+ error_setg(errp, "one of path and host must be specified.");
}
- return -EINVAL;
+ return;
}
s->client.is_unix = qdict_haskey(options, "path");
@@ -209,9 +208,8 @@ static int nbd_config(BDRVNBDState *s, QDict *options, char
**export)
qemu_opts_absorb_qdict(s->socket_opts, options, &local_err);
if (local_err) {
- qerror_report_err(local_err);
- error_free(local_err);
- return -EINVAL;
+ error_propagate(errp, local_err);
+ return;
}
if (!qemu_opt_get(s->socket_opts, "port")) {
@@ -222,19 +220,17 @@ static int nbd_config(BDRVNBDState *s, QDict *options,
char **export)
if (*export) {
qdict_del(options, "export");
}
-
- return 0;
}
-static int nbd_establish_connection(BlockDriverState *bs)
+static int nbd_establish_connection(BlockDriverState *bs, Error **errp)
{
BDRVNBDState *s = bs->opaque;
int sock;
if (s->client.is_unix) {
- sock = unix_socket_outgoing(qemu_opt_get(s->socket_opts, "path"));
+ sock = unix_connect_opts(s->socket_opts, errp, NULL, NULL);
} else {
- sock = tcp_socket_outgoing_opts(s->socket_opts);
+ sock = inet_connect_opts(s->socket_opts, errp, NULL, NULL);
if (sock >= 0) {
socket_set_nodelay(sock);
}
@@ -255,17 +251,19 @@ static int nbd_open(BlockDriverState *bs, QDict *options,
int flags,
BDRVNBDState *s = bs->opaque;
char *export = NULL;
int result, sock;
+ Error *local_err = NULL;
/* Pop the config into our state object. Exit if invalid. */
- result = nbd_config(s, options, &export);
- if (result != 0) {
- return result;
+ nbd_config(s, options, &export, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return -EINVAL;
}
/* establish TCP connection, return error if it fails
* TODO: Configurable retry-until-timeout behaviour.
*/
- sock = nbd_establish_connection(bs);
+ sock = nbd_establish_connection(bs, errp);
if (sock < 0) {
return sock;
}
diff --git a/include/block/nbd.h b/include/block/nbd.h
index c90f5e4..e10ab82 100644
--- a/include/block/nbd.h
+++ b/include/block/nbd.h
@@ -64,7 +64,6 @@ enum {
ssize_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read);
int tcp_socket_incoming(const char *address, uint16_t port);
int tcp_socket_incoming_spec(const char *address_and_port);
-int tcp_socket_outgoing_opts(QemuOpts *opts);
int unix_socket_outgoing(const char *path);
int unix_socket_incoming(const char *path);
diff --git a/nbd.c b/nbd.c
index 030f56b..17ca95b 100644
--- a/nbd.c
+++ b/nbd.c
@@ -199,18 +199,6 @@ static void combine_addr(char *buf, size_t len, const
char* address,
}
}
-int tcp_socket_outgoing_opts(QemuOpts *opts)
-{
- Error *local_err = NULL;
- int fd = inet_connect_opts(opts, &local_err, NULL, NULL);
- if (local_err != NULL) {
- qerror_report_err(local_err);
- error_free(local_err);
- }
-
- return fd;
-}
-
int tcp_socket_incoming(const char *address, uint16_t port)
{
char address_and_port[128];
diff --git a/tests/qemu-iotests/051.out b/tests/qemu-iotests/051.out
index 3e8d962..7de1870 100644
--- a/tests/qemu-iotests/051.out
+++ b/tests/qemu-iotests/051.out
@@ -231,8 +231,7 @@ Testing: -drive driver=file
QEMU_PROG: -drive driver=file: could not open disk image ide0-hd0: The 'file'
block driver requires a file name
Testing: -drive driver=nbd
-QEMU_PROG: -drive driver=nbd: one of path and host must be specified.
-QEMU_PROG: -drive driver=nbd: could not open disk image ide0-hd0: Could not
open image: Invalid argument
+QEMU_PROG: -drive driver=nbd: could not open disk image ide0-hd0: one of path
and host must be specified.
Testing: -drive driver=raw
QEMU_PROG: -drive driver=raw: could not open disk image ide0-hd0: Can't use
'raw' as a block driver for the protocol level
@@ -241,8 +240,7 @@ Testing: -drive file.driver=file
QEMU_PROG: -drive file.driver=file: could not open disk image ide0-hd0: The
'file' block driver requires a file name
Testing: -drive file.driver=nbd
-QEMU_PROG: -drive file.driver=nbd: one of path and host must be specified.
-QEMU_PROG: -drive file.driver=nbd: could not open disk image ide0-hd0: Could
not open image: Invalid argument
+QEMU_PROG: -drive file.driver=nbd: could not open disk image ide0-hd0: one of
path and host must be specified.
Testing: -drive file.driver=raw
QEMU_PROG: -drive file.driver=raw: could not open disk image ide0-hd0: Can't
use 'raw' as a block driver for the protocol level
--
1.8.1.4
- [Qemu-devel] [PULL 01/54] qcow2: Set zero flag for discarded clusters, (continued)
- [Qemu-devel] [PULL 01/54] qcow2: Set zero flag for discarded clusters, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 03/54] block: Change BDS parameter of bdrv_open() to **, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 05/54] block: Make bdrv_file_open() static, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 04/54] block: Add reference parameter to bdrv_open(), Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 06/54] block: Reuse reference handling from bdrv_open(), Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 07/54] block: Remove bdrv_new() from bdrv_file_open(), Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 08/54] block: Handle bs->options in bdrv_open() only, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 09/54] block: Reuse success path from bdrv_open(), Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 10/54] block: Remove bdrv_open_image()'s force_raw option, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 11/54] nbd: produce a better error if neither host nor port is passed, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 12/54] nbd: correctly propagate errors,
Kevin Wolf <=
- [Qemu-devel] [PULL 13/54] nbd: inline tcp_socket_incoming_spec into sole caller, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 14/54] nbd: move socket wrappers to qemu-nbd, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 15/54] iscsi: fix indentation, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 16/54] iscsi: correctly propagate errors in iscsi_open, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 17/54] gluster: default scheme to gluster:// and host to localhost., Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 19/54] cow: correctly propagate errors, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 18/54] gluster: correctly propagate errors, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 20/54] curl: correctly propagate errors, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 21/54] qcow: correctly propagate errors, Kevin Wolf, 2014/02/21
- [Qemu-devel] [PULL 22/54] qed: correctly propagate errors, Kevin Wolf, 2014/02/21