[Qemu-devel] [PATCH V4 05/10] use qemu_opts_create_nofail

[Dong Xu Wang <wdongxu@linux.vnet.ibm.com>]

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

Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
---
 blockdev.c     |    2 +-
 qemu-config.c  |    4 ++--
 qemu-img.c     |    2 +-
 qemu-sockets.c |   10 +++++-----
 vl.c           |   12 +++++-------
 5 files changed, 14 insertions(+), 16 deletions(-)

diff --git a/blockdev.c b/blockdev.c
index 99828ad..1742f40 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -562,7 +562,7 @@ 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/qemu-config.c b/qemu-config.c
index cd1ec21..959a350 100644
--- a/qemu-config.c
+++ b/qemu-config.c
@@ -765,7 +765,7 @@ 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);
@@ -852,7 +852,7 @@ 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 f17f187..f1c224e 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -1778,7 +1778,7 @@ 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 2b1ed2f..edee875 100644
--- a/qemu-sockets.c
+++ b/qemu-sockets.c
@@ -572,7 +572,7 @@ int inet_listen(const char *str, char *ostr, int olen,
     char *optstr;
     int sock = -1;
 
-    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+    opts = qemu_opts_create_nofail(&dummy_opts);
     if (inet_parse(opts, str) == 0) {
         sock = inet_listen_opts(opts, port_offset, errp);
         if (sock != -1 && ostr) {
@@ -609,7 +609,7 @@ int inet_connect(const char *str, Error **errp)
     QemuOpts *opts;
     int sock = -1;
 
-    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+    opts = qemu_opts_create_nofail(&dummy_opts);
     if (inet_parse(opts, str) == 0) {
         sock = inet_connect_opts(opts, errp, NULL, NULL);
     } else {
@@ -641,7 +641,7 @@ int inet_nonblocking_connect(const char *str,
 
     g_assert(callback != NULL);
 
-    opts = qemu_opts_create(&dummy_opts, NULL, 0, NULL);
+    opts = qemu_opts_create_nofail(&dummy_opts);
     if (inet_parse(opts, str) == 0) {
         sock = inet_connect_opts(opts, errp, callback, opaque);
     } else {
@@ -737,7 +737,7 @@ int unix_listen(const char *str, char *ostr, int olen)
     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) {
@@ -765,7 +765,7 @@ int unix_connect(const char *path)
     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);
     qemu_opts_del(opts);
diff --git a/vl.c b/vl.c
index ee3c43a..c748d57 100644
--- a/vl.c
+++ b/vl.c
@@ -1883,7 +1883,7 @@ 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;
@@ -2131,14 +2131,14 @@ 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);
@@ -2944,8 +2944,7 @@ 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"));
@@ -2965,8 +2964,7 @@ 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