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nbd: Move nbd_read_eof() to nbd/client.c

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The only caller of nbd_read_eof() is nbd_receive_reply(), so it doesn't
have to live in the header file, but can move next to its caller.

Also add the missing coroutine_fn to the function and its caller.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Kevin Wolf 2019-02-18 14:38:15 +01:00
parent 2a239e6e03
commit a7b78fc944
3 changed files with 23 additions and 21 deletions
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3
include/block/nbd.h
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@ -300,7 +300,8 @@ int nbd_receive_export_list(QIOChannel *ioc, QCryptoTLSCreds *tlscreds,
int nbd_init(int fd, QIOChannelSocket *sioc, NBDExportInfo *info, int nbd_init(int fd, QIOChannelSocket *sioc, NBDExportInfo *info,
Error **errp); Error **errp);
int nbd_send_request(QIOChannel *ioc, NBDRequest *request); int nbd_send_request(QIOChannel *ioc, NBDRequest *request);
int nbd_receive_reply(QIOChannel *ioc, NBDReply *reply, Error **errp); int coroutine_fn nbd_receive_reply(QIOChannel *ioc, NBDReply *reply,
Error **errp);
int nbd_client(int fd); int nbd_client(int fd);
int nbd_disconnect(int fd); int nbd_disconnect(int fd);
int nbd_errno_to_system_errno(int err); int nbd_errno_to_system_errno(int err);

22
nbd/client.c
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@ -1387,12 +1387,32 @@ static int nbd_receive_structured_reply_chunk(QIOChannel *ioc,
return 0; return 0;
} }
/* nbd_read_eof
* Tries to read @size bytes from @ioc.
* Returns 1 on success
* 0 on eof, when no data was read (errp is not set)
* negative errno on failure (errp is set)
*/
static inline int coroutine_fn
nbd_read_eof(QIOChannel *ioc, void *buffer, size_t size, Error **errp)
{
int ret;
assert(size);
ret = qio_channel_read_all_eof(ioc, buffer, size, errp);
if (ret < 0) {
ret = -EIO;
}
return ret;
}
/* nbd_receive_reply /* nbd_receive_reply
* Returns 1 on success * Returns 1 on success
* 0 on eof, when no data was read (errp is not set) * 0 on eof, when no data was read (errp is not set)
* negative errno on failure (errp is set) * negative errno on failure (errp is set)
*/ */
int nbd_receive_reply(QIOChannel *ioc, NBDReply *reply, Error **errp) int coroutine_fn nbd_receive_reply(QIOChannel *ioc, NBDReply *reply,
Error **errp)
{ {
int ret; int ret;
const char *type; const char *type;

19
nbd/nbd-internal.h
View File

@ -64,25 +64,6 @@
#define NBD_SET_TIMEOUT _IO(0xab, 9) #define NBD_SET_TIMEOUT _IO(0xab, 9)
#define NBD_SET_FLAGS _IO(0xab, 10) #define NBD_SET_FLAGS _IO(0xab, 10)
/* nbd_read_eof
* Tries to read @size bytes from @ioc.
* Returns 1 on success
* 0 on eof, when no data was read (errp is not set)
* negative errno on failure (errp is set)
*/
static inline int nbd_read_eof(QIOChannel *ioc, void *buffer, size_t size,
Error **errp)
{
int ret;
assert(size);
ret = qio_channel_read_all_eof(ioc, buffer, size, errp);
if (ret < 0) {
ret = -EIO;
}
return ret;
}
/* nbd_write /* nbd_write
* Writes @size bytes to @ioc. Returns 0 on success. * Writes @size bytes to @ioc. Returns 0 on success.
*/ */