[Qemu-devel] [PATCH V7 05/10] use qemu_opts_create_nofail

[Dong Xu Wang]

We will use qemu_opts_create_nofail function, it can make code
more readable.

Signed-off-by: Dong Xu Wang <address@hidden>
---
 blockdev.c     |    2 +-
 hw/watchdog.c  |    2 +-
 qemu-config.c  |    4 ++--
 qemu-img.c     |    2 +-
 qemu-sockets.c |   16 ++++++++--------
 vl.c           |   12 +++++-------
 6 files changed, 18 insertions(+), 20 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index e73fd6e..42362db 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -568,7 +568,7 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi)
         break;
     case IF_VIRTIO:
         /* add virtio block device */
-        opts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, NULL);
+        opts = qemu_opts_create_nofail(qemu_find_opts("device"));
         if (arch_type == QEMU_ARCH_S390X) {
             qemu_opt_set(opts, "driver", "virtio-blk-s390");
         } else {
diff --git a/hw/watchdog.c b/hw/watchdog.c
index b52aced..5c82c17 100644
--- a/hw/watchdog.c
+++ b/hw/watchdog.c
@@ -66,7 +66,7 @@ int select_watchdog(const char *p)
     QLIST_FOREACH(model, &watchdog_list, entry) {
         if (strcasecmp(model->wdt_name, p) == 0) {
             /* add the device */
-            opts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, NULL);
+            opts = qemu_opts_create_nofail(qemu_find_opts("device"));
             qemu_opt_set(opts, "driver", p);
             return 0;
         }
diff --git a/qemu-config.c b/qemu-config.c
index 10d1ba4..3aa0cc6 100644
--- a/qemu-config.c
+++ b/qemu-config.c
@@ -805,7 +805,7 @@ int qemu_global_option(const char *str)
         return -1;
     }
 
-    opts = qemu_opts_create(&qemu_global_opts, NULL, 0, NULL);
+    opts = qemu_opts_create_nofail(&qemu_global_opts);
     qemu_opt_set(opts, "driver", driver);
     qemu_opt_set(opts, "property", property);
     qemu_opt_set(opts, "value", str+offset+1);
@@ -892,7 +892,7 @@ int qemu_config_parse(FILE *fp, QemuOptsList **lists, const 
char *fname)
                 error_free(local_err);
                 goto out;
             }
-            opts = qemu_opts_create(list, NULL, 0, NULL);
+            opts = qemu_opts_create_nofail(list);
             continue;
         }
         if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) {
diff --git a/qemu-img.c b/qemu-img.c
index e29e01b..dcd390d 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -1933,7 +1933,7 @@ static int img_resize(int argc, char **argv)
     }
 
     /* Parse size */
-    param = qemu_opts_create(&resize_options, NULL, 0, NULL);
+    param = qemu_opts_create_nofail(&resize_options);
     if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) {
         /* Error message already printed when size parsing fails */
         ret = -1;
diff --git a/qemu-sockets.c b/qemu-sockets.c
index d314cf1..c52a40a 100644
--- a/qemu-sockets.c
+++ b/qemu-sockets.c
@@ -579,7 +579,7 @@ int inet_listen(const char *str, char *ostr, int olen,
 
     addr = inet_parse(str, errp);
     if (addr != NULL) {
-        opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+        opts = qemu_opts_create_nofail(&dummy_opts);
         inet_addr_to_opts(opts, addr);
         qapi_free_InetSocketAddress(addr);
         sock = inet_listen_opts(opts, port_offset, errp);
@@ -618,7 +618,7 @@ int inet_connect(const char *str, Error **errp)
 
     addr = inet_parse(str, errp);
     if (addr != NULL) {
-        opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+        opts = qemu_opts_create_nofail(&dummy_opts);
         inet_addr_to_opts(opts, addr);
         qapi_free_InetSocketAddress(addr);
         sock = inet_connect_opts(opts, errp, NULL, NULL);
@@ -652,7 +652,7 @@ int inet_nonblocking_connect(const char *str,
 
     addr = inet_parse(str, errp);
     if (addr != NULL) {
-        opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+        opts = qemu_opts_create_nofail(&dummy_opts);
         inet_addr_to_opts(opts, addr);
         qapi_free_InetSocketAddress(addr);
         sock = inet_connect_opts(opts, errp, callback, opaque);
@@ -795,7 +795,7 @@ int unix_listen(const char *str, char *ostr, int olen, 
Error **errp)
     char *path, *optstr;
     int sock, len;
 
-    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+    opts = qemu_opts_create_nofail(&dummy_opts);
 
     optstr = strchr(str, ',');
     if (optstr) {
@@ -823,7 +823,7 @@ int unix_connect(const char *path, Error **errp)
     QemuOpts *opts;
     int sock;
 
-    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+    opts = qemu_opts_create_nofail(&dummy_opts);
     qemu_opt_set(opts, "path", path);
     sock = unix_connect_opts(opts, errp, NULL, NULL);
     qemu_opts_del(opts);
@@ -840,7 +840,7 @@ int unix_nonblocking_connect(const char *path,
 
     g_assert(callback != NULL);
 
-    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+    opts = qemu_opts_create_nofail(&dummy_opts);
     qemu_opt_set(opts, "path", path);
     sock = unix_connect_opts(opts, errp, callback, opaque);
     qemu_opts_del(opts);
@@ -891,7 +891,7 @@ int socket_connect(SocketAddress *addr, Error **errp,
     QemuOpts *opts;
     int fd;
 
-    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+    opts = qemu_opts_create_nofail(&dummy_opts);
     switch (addr->kind) {
     case SOCKET_ADDRESS_KIND_INET:
         inet_addr_to_opts(opts, addr->inet);
@@ -922,7 +922,7 @@ int socket_listen(SocketAddress *addr, Error **errp)
     QemuOpts *opts;
     int fd;
 
-    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+    opts = qemu_opts_create_nofail(&dummy_opts);
     switch (addr->kind) {
     case SOCKET_ADDRESS_KIND_INET:
         inet_addr_to_opts(opts, addr->inet);
diff --git a/vl.c b/vl.c
index a3ab384..5fb58fd 100644
--- a/vl.c
+++ b/vl.c
@@ -2001,7 +2001,7 @@ static int balloon_parse(const char *arg)
                 return  -1;
         } else {
             /* create empty opts */
-            opts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, NULL);
+            opts = qemu_opts_create_nofail(qemu_find_opts("device"));
         }
         qemu_opt_set(opts, "driver", "virtio-balloon");
         return 0;
@@ -2251,14 +2251,14 @@ static int virtcon_parse(const char *devname)
         exit(1);
     }
 
-    bus_opts = qemu_opts_create(device, NULL, 0, NULL);
+    bus_opts = qemu_opts_create_nofail(device);
     if (arch_type == QEMU_ARCH_S390X) {
         qemu_opt_set(bus_opts, "driver", "virtio-serial-s390");
     } else {
         qemu_opt_set(bus_opts, "driver", "virtio-serial-pci");
     } 
 
-    dev_opts = qemu_opts_create(device, NULL, 0, NULL);
+    dev_opts = qemu_opts_create_nofail(device);
     qemu_opt_set(dev_opts, "driver", "virtconsole");
 
     snprintf(label, sizeof(label), "virtcon%d", index);
@@ -3110,8 +3110,7 @@ int main(int argc, char **argv, char **envp)
 
                 qemu_opt_set_bool(fsdev, "readonly",
                                 qemu_opt_get_bool(opts, "readonly", 0));
-                device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
-                                          NULL);
+                device = qemu_opts_create_nofail(qemu_find_opts("device"));
                 qemu_opt_set(device, "driver", "virtio-9p-pci");
                 qemu_opt_set(device, "fsdev",
                              qemu_opt_get(opts, "mount_tag"));
@@ -3131,8 +3130,7 @@ int main(int argc, char **argv, char **envp)
                 }
                 qemu_opt_set(fsdev, "fsdriver", "synth");
 
-                device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
-                                          NULL);
+                device = qemu_opts_create_nofail(qemu_find_opts("device"));
                 qemu_opt_set(device, "driver", "virtio-9p-pci");
                 qemu_opt_set(device, "fsdev", "v_synth");
                 qemu_opt_set(device, "mount_tag", "v_synth");
-- 
1.7.1