Re: [Qemu-devel] [PATCH 04/20] nbd: move socket wrappers to qemu-nbd

[Fam Zheng <famz@redhat.com>]

On Sun, 02/09 10:48, Paolo Bonzini wrote:
> qemu-nbd is one of the few valid users of qerror_report_err.  Move
> the error-reporting socket wrappers there.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  include/block/nbd.h |  4 ----
>  nbd.c               | 50 --------------------------------------------------
>  qemu-nbd.c          | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 52 insertions(+), 54 deletions(-)
> 
> diff --git a/include/block/nbd.h b/include/block/nbd.h
> index 1b39c06..79502a0 100644
> --- a/include/block/nbd.h
> +++ b/include/block/nbd.h
> @@ -62,10 +62,6 @@ enum {
>  #define NBD_MAX_BUFFER_SIZE (32 * 1024 * 1024)
>  
>  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 unix_socket_outgoing(const char *path);
> -int unix_socket_incoming(const char *path);
> -
>  int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags,
>                            off_t *size, size_t *blocksize);
>  int nbd_init(int fd, int csock, uint32_t flags, off_t size, size_t blocksize);
> diff --git a/nbd.c b/nbd.c
> index 2fc1f1f..e5084b6 100644
> --- a/nbd.c
> +++ b/nbd.c
> @@ -188,56 +188,6 @@ static ssize_t write_sync(int fd, void *buffer, size_t size)
>      return ret;
>  }
>  
> -static void combine_addr(char *buf, size_t len, const char* address,
> -                         uint16_t port)
> -{
> -    /* If the address-part contains a colon, it's an IPv6 IP so needs [] */
> -    if (strstr(address, ":")) {
> -        snprintf(buf, len, "[%s]:%u", address, port);
> -    } else {
> -        snprintf(buf, len, "%s:%u", address, port);
> -    }
> -}
> -
> -int tcp_socket_incoming(const char *address, uint16_t port)
> -{
> -    char address_and_port[128];
> -    Error *local_err = NULL;
> -
> -    combine_addr(address_and_port, 128, address, port);
> -    int fd = inet_listen(address_and_port, NULL, 0, SOCK_STREAM, 0, &local_err);
> -
> -    if (local_err != NULL) {
> -        qerror_report_err(local_err);
> -        error_free(local_err);
> -    }
> -    return fd;
> -}
> -
> -int unix_socket_incoming(const char *path)
> -{
> -    Error *local_err = NULL;
> -    int fd = unix_listen(path, NULL, 0, &local_err);
> -
> -    if (local_err != NULL) {
> -        qerror_report_err(local_err);
> -        error_free(local_err);
> -    }
> -    return fd;
> -}
> -
> -int unix_socket_outgoing(const char *path)
> -{
> -    Error *local_err = NULL;
> -    int fd = unix_connect(path, &local_err);
> -
> -    if (local_err != NULL) {
> -        qerror_report_err(local_err);
> -        error_free(local_err);
> -    }
> -    return fd;
> -}
> -
>  /* Basic flow for negotiation
>  
>     Server         Client
> diff --git a/qemu-nbd.c b/qemu-nbd.c
> index 136e8c9..8138435 100644
> --- a/qemu-nbd.c
> +++ b/qemu-nbd.c
> @@ -20,6 +20,8 @@
>  #include "block/block.h"
>  #include "block/nbd.h"
>  #include "qemu/main-loop.h"
> +#include "qemu/sockets.h"
> +#include "qemu/error-report.h"
>  #include "block/snapshot.h"
>  
>  #include <stdarg.h>
> @@ -201,6 +203,56 @@ static void termsig_handler(int signum)
>      qemu_notify_event();
>  }
>  
> +static void combine_addr(char *buf, size_t len, const char* address,
> +                         uint16_t port)
> +{
> +    /* If the address-part contains a colon, it's an IPv6 IP so needs [] */
> +    if (strstr(address, ":")) {
> +        snprintf(buf, len, "[%s]:%u", address, port);
> +    } else {
> +        snprintf(buf, len, "%s:%u", address, port);
> +    }
> +}
> +
> +static int tcp_socket_incoming(const char *address, uint16_t port)
> +{
> +    char address_and_port[128];
> +    Error *local_err = NULL;
> +
> +    combine_addr(address_and_port, 128, address, port);
> +    int fd = inet_listen(address_and_port, NULL, 0, SOCK_STREAM, 0, &local_err);
> +
> +    if (local_err != NULL) {
> +        qerror_report_err(local_err);
> +        error_free(local_err);
> +    }
> +    return fd;
> +}
> +
> +static int unix_socket_incoming(const char *path)
> +{
> +    Error *local_err = NULL;
> +    int fd = unix_listen(path, NULL, 0, &local_err);
> +
> +    if (local_err != NULL) {
> +        qerror_report_err(local_err);
> +        error_free(local_err);
> +    }
> +    return fd;
> +}
> +
> +static int unix_socket_outgoing(const char *path)
> +{
> +    Error *local_err = NULL;
> +    int fd = unix_connect(path, &local_err);
> +
> +    if (local_err != NULL) {
> +        qerror_report_err(local_err);
> +        error_free(local_err);
> +    }
> +    return fd;
> +}
> +
>  static void *show_parts(void *arg)
>  {
>      char *device = arg;
> -- 
> 1.8.5.3
> 
> 
> 

Reviewed-by: Fam Zheng <famz@redhat.com>