Xen devel - Jan 2011 - [PATCH, v2]: xl: move domain struct init functions to libxl

Changes since v1:
 - Include nic,net2,vkb,vfb init functions

---
This allows libxl users to get some sane default values for this complex
set of structures. This is purely code movement and there are no
functional changes except for a trivial error handling change in nic
device init.

Signed-off-by: Gianni Tedesco <gianni.tedesco@citrix.com>

diff -r efe2d3ea22ae tools/libxl/libxl.c
--- a/tools/libxl/libxl.c	Tue Jan 11 15:30:48 2011 +0000
+++ b/tools/libxl/libxl.c	Tue Jan 11 15:40:45 2011 +0000
@@ -1024,6 +1024,35 @@ int libxl_device_disk_local_detach(libxl
 }
 
 /******************************************************************************/
+int libxl_device_nic_init(libxl_device_nic *nic_info, int devnum)
+{
+    const uint8_t *r;
+    libxl_uuid uuid;
+
+    libxl_uuid_generate(&uuid);
+    r = libxl_uuid_bytearray(&uuid);
+    memset(nic_info, ''\0'', sizeof(*nic_info));
+
+    nic_info->backend_domid = 0;
+    nic_info->domid = 0;
+    nic_info->devid = devnum;
+    nic_info->mtu = 1492;
+    nic_info->model = strdup("e1000");
+    nic_info->mac[0] = 0x00;
+    nic_info->mac[1] = 0x16;
+    nic_info->mac[2] = 0x3e;
+    nic_info->mac[3] = r[0] & 0x7f;
+    nic_info->mac[4] = r[1];
+    nic_info->mac[5] = r[2];
+    nic_info->ifname = NULL;
+    nic_info->bridge = strdup("xenbr0");
+    if ( asprintf(&nic_info->script, "%s/vif-bridge",
+               libxl_xen_script_dir_path()) < 0 )
+        return ERROR_FAIL;
+    nic_info->nictype = NICTYPE_IOEMU;
+    return 0;
+}
+
 int libxl_device_nic_add(libxl_ctx *ctx, uint32_t domid, libxl_device_nic *nic)
 {
     libxl__gc gc = LIBXL_INIT_GC(ctx);
@@ -1182,6 +1211,34 @@ err:
 }
 
 /******************************************************************************/
+void libxl_device_net2_init(libxl_device_net2 *net2_info, int devnum)
+{
+    const uint8_t *r;
+    libxl_uuid uuid;
+
+    libxl_uuid_generate(&uuid);
+    r = libxl_uuid_bytearray(&uuid);
+    memset(net2_info, ''\0'', sizeof(*net2_info));
+
+    net2_info->devid = devnum;
+    net2_info->front_mac[0] = 0x00;
+    net2_info->front_mac[1] = 0x16;
+    net2_info->front_mac[2] = 0x3e;;
+    net2_info->front_mac[3] = 0x7f & r[0];
+    net2_info->front_mac[4] = r[1];
+    net2_info->front_mac[5] = r[2];
+    net2_info->back_mac[0] = 0x00;
+    net2_info->back_mac[1] = 0x16;
+    net2_info->back_mac[2] = 0x3e;
+    net2_info->back_mac[3] = 0x7f & r[3];
+    net2_info->back_mac[4] = r[4];
+    net2_info->back_mac[5] = r[5];
+    net2_info->back_trusted = 1;
+    net2_info->filter_mac = 1;
+    net2_info->max_bypasses = 5;
+    net2_info->bridge = strdup("xenbr0");
+}
+
 int libxl_device_net2_add(libxl_ctx *ctx, uint32_t domid, libxl_device_net2
*net2)
 {
     libxl__gc gc = LIBXL_INIT_GC(ctx);
@@ -1449,6 +1506,12 @@ out:
 }
 
 /******************************************************************************/
+void libxl_device_vkb_init(libxl_device_vkb *vkb, int dev_num)
+{
+    memset(vkb, 0x00, sizeof(libxl_device_vkb));
+    vkb->devid = dev_num;
+}
+
 int libxl_device_vkb_add(libxl_ctx *ctx, uint32_t domid, libxl_device_vkb *vkb)
 {
     libxl__gc gc = LIBXL_INIT_GC(ctx);
@@ -1647,6 +1710,22 @@ out:
 }
 
 /******************************************************************************/
+void libxl_device_vfb_init(libxl_device_vfb *vfb, int dev_num)
+{
+    memset(vfb, 0x00, sizeof(libxl_device_vfb));
+    vfb->devid = dev_num;
+    vfb->display = NULL;
+    vfb->xauthority = NULL;
+    vfb->vnc = 1;
+    vfb->vncpasswd = NULL;
+    vfb->vnclisten = strdup("127.0.0.1");
+    vfb->vncdisplay = 0;
+    vfb->vncunused = 1;
+    vfb->keymap = NULL;
+    vfb->sdl = 0;
+    vfb->opengl = 0;
+}
+
 int libxl_device_vfb_add(libxl_ctx *ctx, uint32_t domid, libxl_device_vfb *vfb)
 {
     libxl__gc gc = LIBXL_INIT_GC(ctx);
diff -r efe2d3ea22ae tools/libxl/libxl.h
--- a/tools/libxl/libxl.h	Tue Jan 11 15:30:48 2011 +0000
+++ b/tools/libxl/libxl.h	Tue Jan 11 15:40:45 2011 +0000
@@ -280,6 +280,9 @@ int libxl_ctx_set_log(libxl_ctx *ctx, xe
 int libxl_ctx_postfork(libxl_ctx *ctx);
 
 /* domain related functions */
+void libxl_init_create_info(libxl_domain_create_info *c_info);
+void libxl_init_build_info(libxl_domain_build_info *b_info,
libxl_domain_create_info *c_info);
+void libxl_init_dm_info(libxl_device_model_info *dm_info,
libxl_domain_create_info *c_info, libxl_domain_build_info *b_info);
 typedef int (*libxl_console_ready)(libxl_ctx *ctx, uint32_t domid, void *priv);
 int libxl_domain_create_new(libxl_ctx *ctx, libxl_domain_config *d_config,
libxl_console_ready cb, void *priv, uint32_t *domid);
 int libxl_domain_create_restore(libxl_ctx *ctx, libxl_domain_config *d_config,
libxl_console_ready cb, void *priv, uint32_t *domid, int restore_fd);
@@ -419,16 +422,19 @@ int libxl_cdrom_insert(libxl_ctx *ctx, u
 char * libxl_device_disk_local_attach(libxl_ctx *ctx, libxl_device_disk *disk);
 int libxl_device_disk_local_detach(libxl_ctx *ctx, libxl_device_disk *disk);
 
+int libxl_device_nic_init(libxl_device_nic *nic, int dev_num);
 int libxl_device_nic_add(libxl_ctx *ctx, uint32_t domid, libxl_device_nic
*nic);
 int libxl_device_nic_del(libxl_ctx *ctx, libxl_device_nic *nic, int wait);
 libxl_nicinfo *libxl_list_nics(libxl_ctx *ctx, uint32_t domid, unsigned int
*nb);
 
 int libxl_device_console_add(libxl_ctx *ctx, uint32_t domid,
libxl_device_console *console);
 
+void libxl_device_vkb_init(libxl_device_vkb *vkb, int dev_num);
 int libxl_device_vkb_add(libxl_ctx *ctx, uint32_t domid, libxl_device_vkb
*vkb);
 int libxl_device_vkb_clean_shutdown(libxl_ctx *ctx, uint32_t domid);
 int libxl_device_vkb_hard_shutdown(libxl_ctx *ctx, uint32_t domid);
 
+void libxl_device_vfb_init(libxl_device_vfb *vfb, int dev_num);
 int libxl_device_vfb_add(libxl_ctx *ctx, uint32_t domid, libxl_device_vfb
*vfb);
 int libxl_device_vfb_clean_shutdown(libxl_ctx *ctx, uint32_t domid);
 int libxl_device_vfb_hard_shutdown(libxl_ctx *ctx, uint32_t domid);
@@ -526,6 +532,7 @@ int libxl_tmem_shared_auth(libxl_ctx *ct
                            int auth);
 int libxl_tmem_freeable(libxl_ctx *ctx);
 
+void libxl_device_net2_init(libxl_device_net2 *net2, int dev_num);
 int libxl_device_net2_add(libxl_ctx *ctx, uint32_t domid,
                           libxl_device_net2 *net2);
 libxl_net2info *libxl_device_net2_list(libxl_ctx *ctx, uint32_t domid,
diff -r efe2d3ea22ae tools/libxl/libxl_create.c
--- a/tools/libxl/libxl_create.c	Tue Jan 11 15:30:48 2011 +0000
+++ b/tools/libxl/libxl_create.c	Tue Jan 11 15:40:45 2011 +0000
@@ -60,6 +60,75 @@ void libxl_domain_config_destroy(libxl_d
     libxl_device_model_info_destroy(&d_config->dm_info);
 }
 
+void libxl_init_create_info(libxl_domain_create_info *c_info)
+{
+    memset(c_info, ''\0'', sizeof(*c_info));
+    c_info->xsdata = NULL;
+    c_info->platformdata = NULL;
+    c_info->hap = 1;
+    c_info->hvm = 1;
+    c_info->oos = 1;
+    c_info->ssidref = 0;
+    c_info->poolid = 0;
+}
+
+void libxl_init_build_info(libxl_domain_build_info *b_info,
libxl_domain_create_info *c_info)
+{
+    memset(b_info, ''\0'', sizeof(*b_info));
+    b_info->max_vcpus = 1;
+    b_info->max_memkb = 32 * 1024;
+    b_info->target_memkb = b_info->max_memkb;
+    b_info->disable_migrate = 0;
+    b_info->cpuid = NULL;
+    b_info->shadow_memkb = 0;
+    if (c_info->hvm) {
+        b_info->video_memkb = 8 * 1024;
+        b_info->kernel.path = strdup("hvmloader");
+        b_info->hvm = 1;
+        b_info->u.hvm.pae = 1;
+        b_info->u.hvm.apic = 1;
+        b_info->u.hvm.acpi = 1;
+        b_info->u.hvm.nx = 1;
+        b_info->u.hvm.viridian = 0;
+        b_info->u.hvm.hpet = 1;
+        b_info->u.hvm.vpt_align = 1;
+        b_info->u.hvm.timer_mode = 1;
+    } else {
+        b_info->u.pv.slack_memkb = 8 * 1024;
+    }
+}
+
+void libxl_init_dm_info(libxl_device_model_info *dm_info,
+        libxl_domain_create_info *c_info, libxl_domain_build_info *b_info)
+{
+    memset(dm_info, ''\0'', sizeof(*dm_info));
+
+    libxl_uuid_generate(&dm_info->uuid);
+
+    dm_info->dom_name = strdup(c_info->name);
+    dm_info->device_model = strdup("qemu-dm");
+    dm_info->target_ram = libxl__sizekb_to_mb(b_info->target_memkb);
+    dm_info->videoram = libxl__sizekb_to_mb(b_info->video_memkb);
+    dm_info->apic = b_info->u.hvm.apic;
+    dm_info->vcpus = b_info->max_vcpus;
+    dm_info->vcpu_avail = b_info->cur_vcpus;
+
+    dm_info->stdvga = 0;
+    dm_info->vnc = 1;
+    dm_info->vnclisten = strdup("127.0.0.1");
+    dm_info->vncdisplay = 0;
+    dm_info->vncunused = 1;
+    dm_info->keymap = NULL;
+    dm_info->sdl = 0;
+    dm_info->opengl = 0;
+    dm_info->nographic = 0;
+    dm_info->serial = NULL;
+    dm_info->boot = strdup("cda");
+    dm_info->usb = 0;
+    dm_info->usbdevice = NULL;
+    dm_info->xen_platform_pci = 1;
+}
+
 static int init_console_info(libxl_device_console *console, int dev_num,
libxl_domain_build_state *state)
 {
     memset(console, 0x00, sizeof(libxl_device_console));
diff -r efe2d3ea22ae tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c	Tue Jan 11 15:30:48 2011 +0000
+++ b/tools/libxl/xl_cmdimpl.c	Tue Jan 11 15:40:45 2011 +0000
@@ -249,152 +249,6 @@ static void dolog(const char *file, int 
         libxl_write_exactly(NULL, logfile, s, rc, NULL, NULL);
 }
 
-static void init_create_info(libxl_domain_create_info *c_info)
-{
-    memset(c_info, ''\0'', sizeof(*c_info));
-    c_info->xsdata = NULL;
-    c_info->platformdata = NULL;
-    c_info->hap = 1;
-    c_info->hvm = 1;
-    c_info->oos = 1;
-    c_info->ssidref = 0;
-    c_info->poolid = 0;
-}
-
-static void init_build_info(libxl_domain_build_info *b_info,
libxl_domain_create_info *c_info)
-{
-    memset(b_info, ''\0'', sizeof(*b_info));
-    b_info->max_vcpus = 1;
-    b_info->max_memkb = 32 * 1024;
-    b_info->target_memkb = b_info->max_memkb;
-    b_info->disable_migrate = 0;
-    b_info->cpuid = NULL;
-    b_info->shadow_memkb = 0;
-    if (c_info->hvm) {
-        b_info->video_memkb = 8 * 1024;
-        b_info->kernel.path = strdup("hvmloader");
-        b_info->hvm = 1;
-        b_info->u.hvm.pae = 1;
-        b_info->u.hvm.apic = 1;
-        b_info->u.hvm.acpi = 1;
-        b_info->u.hvm.nx = 1;
-        b_info->u.hvm.viridian = 0;
-        b_info->u.hvm.hpet = 1;
-        b_info->u.hvm.vpt_align = 1;
-        b_info->u.hvm.timer_mode = 1;
-    } else {
-        b_info->u.pv.slack_memkb = 8 * 1024;
-    }
-}
-
-static void init_dm_info(libxl_device_model_info *dm_info,
-        libxl_domain_create_info *c_info, libxl_domain_build_info *b_info)
-{
-    memset(dm_info, ''\0'', sizeof(*dm_info));
-
-    libxl_uuid_generate(&dm_info->uuid);
-
-    dm_info->dom_name = strdup(c_info->name);
-    dm_info->device_model = strdup("qemu-dm");
-    dm_info->target_ram = libxl__sizekb_to_mb(b_info->target_memkb);
-    dm_info->videoram = libxl__sizekb_to_mb(b_info->video_memkb);
-    dm_info->apic = b_info->u.hvm.apic;
-    dm_info->vcpus = b_info->max_vcpus;
-    dm_info->vcpu_avail = b_info->cur_vcpus;
-
-    dm_info->stdvga = 0;
-    dm_info->vnc = 1;
-    dm_info->vnclisten = strdup("127.0.0.1");
-    dm_info->vncdisplay = 0;
-    dm_info->vncunused = 1;
-    dm_info->keymap = NULL;
-    dm_info->sdl = 0;
-    dm_info->opengl = 0;
-    dm_info->nographic = 0;
-    dm_info->serial = NULL;
-    dm_info->boot = strdup("cda");
-    dm_info->usb = 0;
-    dm_info->usbdevice = NULL;
-    dm_info->xen_platform_pci = 1;
-}
-
-static void init_nic_info(libxl_device_nic *nic_info, int devnum)
-{
-    const uint8_t *r;
-    libxl_uuid uuid;
-
-    libxl_uuid_generate(&uuid);
-    r = libxl_uuid_bytearray(&uuid);
-    memset(nic_info, ''\0'', sizeof(*nic_info));
-
-    nic_info->backend_domid = 0;
-    nic_info->domid = 0;
-    nic_info->devid = devnum;
-    nic_info->mtu = 1492;
-    nic_info->model = strdup("e1000");
-    nic_info->mac[0] = 0x00;
-    nic_info->mac[1] = 0x16;
-    nic_info->mac[2] = 0x3e;
-    nic_info->mac[3] = r[0] & 0x7f;
-    nic_info->mac[4] = r[1];
-    nic_info->mac[5] = r[2];
-    nic_info->ifname = NULL;
-    nic_info->bridge = strdup("xenbr0");
-    CHK_ERRNO( asprintf(&nic_info->script, "%s/vif-bridge",
-               libxl_xen_script_dir_path()) );
-    nic_info->nictype = NICTYPE_IOEMU;
-}
-
-static void init_net2_info(libxl_device_net2 *net2_info, int devnum)
-{
-    const uint8_t *r;
-    libxl_uuid uuid;
-
-    libxl_uuid_generate(&uuid);
-    r = libxl_uuid_bytearray(&uuid);
-    memset(net2_info, ''\0'', sizeof(*net2_info));
-
-    net2_info->devid = devnum;
-    net2_info->front_mac[0] = 0x00;
-    net2_info->front_mac[1] = 0x16;
-    net2_info->front_mac[2] = 0x3e;;
-    net2_info->front_mac[3] = 0x7f & r[0];
-    net2_info->front_mac[4] = r[1];
-    net2_info->front_mac[5] = r[2];
-    net2_info->back_mac[0] = 0x00;
-    net2_info->back_mac[1] = 0x16;
-    net2_info->back_mac[2] = 0x3e;
-    net2_info->back_mac[3] = 0x7f & r[3];
-    net2_info->back_mac[4] = r[4];
-    net2_info->back_mac[5] = r[5];
-    net2_info->back_trusted = 1;
-    net2_info->filter_mac = 1;
-    net2_info->max_bypasses = 5;
-    net2_info->bridge = strdup("xenbr0");
-}
-
-static void init_vfb_info(libxl_device_vfb *vfb, int dev_num)
-{
-    memset(vfb, 0x00, sizeof(libxl_device_vfb));
-    vfb->devid = dev_num;
-    vfb->display = NULL;
-    vfb->xauthority = NULL;
-    vfb->vnc = 1;
-    vfb->vncpasswd = NULL;
-    vfb->vnclisten = strdup("127.0.0.1");
-    vfb->vncdisplay = 0;
-    vfb->vncunused = 1;
-    vfb->keymap = NULL;
-    vfb->sdl = 0;
-    vfb->opengl = 0;
-}
-
-static void init_vkb_info(libxl_device_vkb *vkb, int dev_num)
-{
-    memset(vkb, 0x00, sizeof(libxl_device_vkb));
-    vkb->devid = dev_num;
-}
-
 static void printf_info(int domid,
                         libxl_domain_config *d_config,
                         libxl_device_model_info *dm_info)
@@ -726,7 +580,7 @@ static void parse_config_data(const char
         exit(1);
     }
 
-    init_create_info(c_info);
+    libxl_init_create_info(c_info);
 
     c_info->hvm = 0;
     if (!xlu_cfg_get_string (config, "builder", &buf) &&
@@ -761,7 +615,7 @@ static void parse_config_data(const char
         exit(1);
     }
 
-    init_build_info(b_info, c_info);
+    libxl_init_build_info(b_info, c_info);
 
     /* the following is the actual config parsing with overriding values in the
structures */
     if (!xlu_cfg_get_long (config, "vcpus", &l)) {
@@ -904,7 +758,7 @@ static void parse_config_data(const char
 
             d_config->vifs = (libxl_device_nic *) realloc(d_config->vifs,
sizeof (libxl_device_nic) * (d_config->num_vifs+1));
             nic = d_config->vifs + d_config->num_vifs;
-            init_nic_info(nic, d_config->num_vifs);
+            CHK_ERRNO( libxl_device_nic_init(nic, d_config->num_vifs) );
 
             p = strtok(buf2, ",");
             if (!p)
@@ -981,7 +835,7 @@ skip:
             d_config->vif2s = realloc(d_config->vif2s, sizeof
(libxl_device_net2) * (d_config->num_vif2s + 1));
             net2 = d_config->vif2s + d_config->num_vif2s;
 
-            init_net2_info(net2, d_config->num_vif2s);
+            libxl_device_net2_init(net2, d_config->num_vif2s);
 
             for (p = strtok(buf2, ","); p; p = strtok(NULL,
",")) {
                 char* val;
@@ -1033,11 +887,11 @@ skip:
 
             d_config->vfbs = (libxl_device_vfb *) realloc(d_config->vfbs,
sizeof(libxl_device_vfb) * (d_config->num_vfbs + 1));
             vfb = d_config->vfbs + d_config->num_vfbs;
-            init_vfb_info(vfb, d_config->num_vfbs);
+            libxl_device_vfb_init(vfb, d_config->num_vfbs);
 
             d_config->vkbs = (libxl_device_vkb *) realloc(d_config->vkbs,
sizeof(libxl_device_vkb) * (d_config->num_vkbs + 1));
             vkb = d_config->vkbs + d_config->num_vkbs;
-            init_vkb_info(vkb, d_config->num_vkbs);
+            libxl_device_vkb_init(vkb, d_config->num_vkbs);
 
             p = strtok(buf2, ",");
             if (!p)
@@ -1187,7 +1041,7 @@ skip_vfb:
 
     if (c_info->hvm == 1) {
         /* init dm from c and b */
-        init_dm_info(dm_info, c_info, b_info);
+        libxl_init_dm_info(dm_info, c_info, b_info);
 
         /* then process config related to dm */
         xlu_cfg_replace_string (config, "device_model",
&dm_info->device_model);
@@ -4322,7 +4176,7 @@ int main_networkattach(int argc, char **
         fprintf(stderr, "%s is an invalid domain identifier\n",
argv[optind]);
         return 1;
     }
-    init_nic_info(&nic, -1);
+    libxl_device_nic_init(&nic, -1);
     for (argv += optind+1, argc -= optind+1; argc > 0; ++argv, --argc) {
         if (!strncmp("type=", *argv, 5)) {
             if (!strncmp("vif", (*argv) + 5, 4)) {
@@ -4656,7 +4510,7 @@ int main_network2attach(int argc, char *
         fprintf(stderr, "%s is an invalid domain identifier\n",
argv[optind]);
         return 1;
     }
-    init_net2_info(&net2, -1);
+    libxl_device_net2_init(&net2, -1);
     for (argv += optind+1, argc -= optind+1; argc > 0; --argc, ++argv) {
         if (!strncmp("front_mac=", *argv, 10)) {
             tok = strtok((*argv) + 10, ":");



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