root / hw / xen_devconfig.c @ 9077f01b
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1 | 2c8b24a3 | aliguori | #include "xen_backend.h" |
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2 | 2446333c | Blue Swirl | #include "blockdev.h" |
3 | 2446333c | Blue Swirl | #include "block_int.h" /* XXX */ |
4 | 2c8b24a3 | aliguori | |
5 | 2c8b24a3 | aliguori | /* ------------------------------------------------------------- */
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6 | 2c8b24a3 | aliguori | |
7 | 2c8b24a3 | aliguori | struct xs_dirs {
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8 | 2c8b24a3 | aliguori | char *xs_dir;
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9 | 72cf2d4f | Blue Swirl | QTAILQ_ENTRY(xs_dirs) list; |
10 | 2c8b24a3 | aliguori | }; |
11 | 72cf2d4f | Blue Swirl | static QTAILQ_HEAD(xs_dirs_head, xs_dirs) xs_cleanup = QTAILQ_HEAD_INITIALIZER(xs_cleanup);
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12 | 2c8b24a3 | aliguori | |
13 | 2c8b24a3 | aliguori | static void xen_config_cleanup_dir(char *dir) |
14 | 2c8b24a3 | aliguori | { |
15 | 2c8b24a3 | aliguori | struct xs_dirs *d;
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16 | 2c8b24a3 | aliguori | |
17 | 7267c094 | Anthony Liguori | d = g_malloc(sizeof(*d));
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18 | 2c8b24a3 | aliguori | d->xs_dir = dir; |
19 | 72cf2d4f | Blue Swirl | QTAILQ_INSERT_TAIL(&xs_cleanup, d, list); |
20 | 2c8b24a3 | aliguori | } |
21 | 2c8b24a3 | aliguori | |
22 | 28695489 | Anthony Liguori | void xen_config_cleanup(void) |
23 | 2c8b24a3 | aliguori | { |
24 | 2c8b24a3 | aliguori | struct xs_dirs *d;
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25 | 2c8b24a3 | aliguori | |
26 | 72cf2d4f | Blue Swirl | QTAILQ_FOREACH(d, &xs_cleanup, list) { |
27 | 2c8b24a3 | aliguori | xs_rm(xenstore, 0, d->xs_dir);
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28 | 2c8b24a3 | aliguori | } |
29 | 2c8b24a3 | aliguori | } |
30 | 2c8b24a3 | aliguori | |
31 | 2c8b24a3 | aliguori | /* ------------------------------------------------------------- */
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32 | 2c8b24a3 | aliguori | |
33 | 2c8b24a3 | aliguori | static int xen_config_dev_mkdir(char *dev, int p) |
34 | 2c8b24a3 | aliguori | { |
35 | 2c8b24a3 | aliguori | struct xs_permissions perms[2] = {{ |
36 | 2c8b24a3 | aliguori | .id = 0, /* set owner: dom0 */ |
37 | 2c8b24a3 | aliguori | },{ |
38 | 2c8b24a3 | aliguori | .id = xen_domid, |
39 | 2c8b24a3 | aliguori | .perms = p, |
40 | 2c8b24a3 | aliguori | }}; |
41 | 2c8b24a3 | aliguori | |
42 | 2c8b24a3 | aliguori | if (!xs_mkdir(xenstore, 0, dev)) { |
43 | 2c8b24a3 | aliguori | xen_be_printf(NULL, 0, "xs_mkdir %s: failed\n", dev); |
44 | 2c8b24a3 | aliguori | return -1; |
45 | 2c8b24a3 | aliguori | } |
46 | 7267c094 | Anthony Liguori | xen_config_cleanup_dir(g_strdup(dev)); |
47 | 2c8b24a3 | aliguori | |
48 | 2c8b24a3 | aliguori | if (!xs_set_permissions(xenstore, 0, dev, perms, 2)) { |
49 | 2c8b24a3 | aliguori | xen_be_printf(NULL, 0, "xs_set_permissions %s: failed\n", dev); |
50 | 2c8b24a3 | aliguori | return -1; |
51 | 2c8b24a3 | aliguori | } |
52 | 2c8b24a3 | aliguori | return 0; |
53 | 2c8b24a3 | aliguori | } |
54 | 2c8b24a3 | aliguori | |
55 | 2c8b24a3 | aliguori | static int xen_config_dev_dirs(const char *ftype, const char *btype, int vdev, |
56 | 2c8b24a3 | aliguori | char *fe, char *be, int len) |
57 | 2c8b24a3 | aliguori | { |
58 | 2c8b24a3 | aliguori | char *dom;
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59 | 2c8b24a3 | aliguori | |
60 | 2c8b24a3 | aliguori | dom = xs_get_domain_path(xenstore, xen_domid); |
61 | 2c8b24a3 | aliguori | snprintf(fe, len, "%s/device/%s/%d", dom, ftype, vdev);
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62 | 2c8b24a3 | aliguori | free(dom); |
63 | 2c8b24a3 | aliguori | |
64 | 2c8b24a3 | aliguori | dom = xs_get_domain_path(xenstore, 0);
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65 | 2c8b24a3 | aliguori | snprintf(be, len, "%s/backend/%s/%d/%d", dom, btype, xen_domid, vdev);
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66 | 2c8b24a3 | aliguori | free(dom); |
67 | 2c8b24a3 | aliguori | |
68 | 2c8b24a3 | aliguori | xen_config_dev_mkdir(fe, XS_PERM_READ | XS_PERM_WRITE); |
69 | 2c8b24a3 | aliguori | xen_config_dev_mkdir(be, XS_PERM_READ); |
70 | 2c8b24a3 | aliguori | return 0; |
71 | 2c8b24a3 | aliguori | } |
72 | 2c8b24a3 | aliguori | |
73 | 2c8b24a3 | aliguori | static int xen_config_dev_all(char *fe, char *be) |
74 | 2c8b24a3 | aliguori | { |
75 | 2c8b24a3 | aliguori | /* frontend */
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76 | 2c8b24a3 | aliguori | if (xen_protocol)
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77 | 2c8b24a3 | aliguori | xenstore_write_str(fe, "protocol", xen_protocol);
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78 | 2c8b24a3 | aliguori | |
79 | 2c8b24a3 | aliguori | xenstore_write_int(fe, "state", XenbusStateInitialising);
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80 | 2c8b24a3 | aliguori | xenstore_write_int(fe, "backend-id", 0); |
81 | 2c8b24a3 | aliguori | xenstore_write_str(fe, "backend", be);
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82 | 2c8b24a3 | aliguori | |
83 | 2c8b24a3 | aliguori | /* backend */
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84 | 2c8b24a3 | aliguori | xenstore_write_str(be, "domain", qemu_name ? qemu_name : "no-name"); |
85 | 2c8b24a3 | aliguori | xenstore_write_int(be, "online", 1); |
86 | 2c8b24a3 | aliguori | xenstore_write_int(be, "state", XenbusStateInitialising);
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87 | 2c8b24a3 | aliguori | xenstore_write_int(be, "frontend-id", xen_domid);
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88 | 2c8b24a3 | aliguori | xenstore_write_str(be, "frontend", fe);
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89 | 2c8b24a3 | aliguori | |
90 | 2c8b24a3 | aliguori | return 0; |
91 | 2c8b24a3 | aliguori | } |
92 | 2c8b24a3 | aliguori | |
93 | 2c8b24a3 | aliguori | /* ------------------------------------------------------------- */
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94 | 2c8b24a3 | aliguori | |
95 | 2c8b24a3 | aliguori | int xen_config_dev_blk(DriveInfo *disk)
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96 | 2c8b24a3 | aliguori | { |
97 | 2c8b24a3 | aliguori | char fe[256], be[256]; |
98 | 2c8b24a3 | aliguori | int vdev = 202 * 256 + 16 * disk->unit; |
99 | 95b5edcd | Markus Armbruster | int cdrom = disk->media_cd;
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100 | 2c8b24a3 | aliguori | const char *devtype = cdrom ? "cdrom" : "disk"; |
101 | 2c8b24a3 | aliguori | const char *mode = cdrom ? "r" : "w"; |
102 | 2c8b24a3 | aliguori | |
103 | 2c8b24a3 | aliguori | snprintf(disk->bdrv->device_name, sizeof(disk->bdrv->device_name),
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104 | 2c8b24a3 | aliguori | "xvd%c", 'a' + disk->unit); |
105 | 2c8b24a3 | aliguori | xen_be_printf(NULL, 1, "config disk %d [%s]: %s\n", |
106 | 2c8b24a3 | aliguori | disk->unit, disk->bdrv->device_name, disk->bdrv->filename); |
107 | 2c8b24a3 | aliguori | xen_config_dev_dirs("vbd", "qdisk", vdev, fe, be, sizeof(fe)); |
108 | 2c8b24a3 | aliguori | |
109 | 2c8b24a3 | aliguori | /* frontend */
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110 | 2c8b24a3 | aliguori | xenstore_write_int(fe, "virtual-device", vdev);
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111 | 2c8b24a3 | aliguori | xenstore_write_str(fe, "device-type", devtype);
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112 | 2c8b24a3 | aliguori | |
113 | 2c8b24a3 | aliguori | /* backend */
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114 | 2c8b24a3 | aliguori | xenstore_write_str(be, "dev", disk->bdrv->device_name);
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115 | 2c8b24a3 | aliguori | xenstore_write_str(be, "type", "file"); |
116 | 2c8b24a3 | aliguori | xenstore_write_str(be, "params", disk->bdrv->filename);
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117 | 2c8b24a3 | aliguori | xenstore_write_str(be, "mode", mode);
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118 | 2c8b24a3 | aliguori | |
119 | 2c8b24a3 | aliguori | /* common stuff */
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120 | 2c8b24a3 | aliguori | return xen_config_dev_all(fe, be);
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121 | 2c8b24a3 | aliguori | } |
122 | 2c8b24a3 | aliguori | |
123 | 2c8b24a3 | aliguori | int xen_config_dev_nic(NICInfo *nic)
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124 | 2c8b24a3 | aliguori | { |
125 | 2c8b24a3 | aliguori | char fe[256], be[256]; |
126 | 2c8b24a3 | aliguori | char mac[20]; |
127 | 2c8b24a3 | aliguori | |
128 | 2c8b24a3 | aliguori | snprintf(mac, sizeof(mac), "%02x:%02x:%02x:%02x:%02x:%02x", |
129 | 6eed1856 | Jan Kiszka | nic->macaddr.a[0], nic->macaddr.a[1], nic->macaddr.a[2], |
130 | 6eed1856 | Jan Kiszka | nic->macaddr.a[3], nic->macaddr.a[4], nic->macaddr.a[5]); |
131 | 2c8b24a3 | aliguori | xen_be_printf(NULL, 1, "config nic %d: mac=\"%s\"\n", nic->vlan->id, mac); |
132 | 2c8b24a3 | aliguori | xen_config_dev_dirs("vif", "qnic", nic->vlan->id, fe, be, sizeof(fe)); |
133 | 2c8b24a3 | aliguori | |
134 | 2c8b24a3 | aliguori | /* frontend */
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135 | 2c8b24a3 | aliguori | xenstore_write_int(fe, "handle", nic->vlan->id);
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136 | 2c8b24a3 | aliguori | xenstore_write_str(fe, "mac", mac);
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137 | 2c8b24a3 | aliguori | |
138 | 2c8b24a3 | aliguori | /* backend */
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139 | 2c8b24a3 | aliguori | xenstore_write_int(be, "handle", nic->vlan->id);
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140 | 2c8b24a3 | aliguori | xenstore_write_str(be, "mac", mac);
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141 | 2c8b24a3 | aliguori | |
142 | 2c8b24a3 | aliguori | /* common stuff */
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143 | 2c8b24a3 | aliguori | return xen_config_dev_all(fe, be);
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144 | 2c8b24a3 | aliguori | } |
145 | 9306acb5 | aliguori | |
146 | 9306acb5 | aliguori | int xen_config_dev_vfb(int vdev, const char *type) |
147 | 9306acb5 | aliguori | { |
148 | 9306acb5 | aliguori | char fe[256], be[256]; |
149 | 9306acb5 | aliguori | |
150 | 9306acb5 | aliguori | xen_config_dev_dirs("vfb", "vfb", vdev, fe, be, sizeof(fe)); |
151 | 9306acb5 | aliguori | |
152 | 9306acb5 | aliguori | /* backend */
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153 | 9306acb5 | aliguori | xenstore_write_str(be, "type", type);
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154 | 9306acb5 | aliguori | |
155 | 9306acb5 | aliguori | /* common stuff */
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156 | 9306acb5 | aliguori | return xen_config_dev_all(fe, be);
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157 | 9306acb5 | aliguori | } |
158 | 9306acb5 | aliguori | |
159 | 9306acb5 | aliguori | int xen_config_dev_vkbd(int vdev) |
160 | 9306acb5 | aliguori | { |
161 | 9306acb5 | aliguori | char fe[256], be[256]; |
162 | 9306acb5 | aliguori | |
163 | 9306acb5 | aliguori | xen_config_dev_dirs("vkbd", "vkbd", vdev, fe, be, sizeof(fe)); |
164 | 9306acb5 | aliguori | return xen_config_dev_all(fe, be);
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165 | 9306acb5 | aliguori | } |
166 | 9306acb5 | aliguori | |
167 | 9306acb5 | aliguori | int xen_config_dev_console(int vdev) |
168 | 9306acb5 | aliguori | { |
169 | 9306acb5 | aliguori | char fe[256], be[256]; |
170 | 9306acb5 | aliguori | |
171 | 9306acb5 | aliguori | xen_config_dev_dirs("console", "console", vdev, fe, be, sizeof(fe)); |
172 | 9306acb5 | aliguori | return xen_config_dev_all(fe, be);
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173 | 9306acb5 | aliguori | } |