remote: Implement virDomainFSFreeze and virDomainFSThaw

New rules are added in fixup_name in gendispatch.pl to keep the name
FSFreeze and FSThaw. This adds a new ACL permission 'fs_freeze',
which is also applied to VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE flag.

Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
Acked-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

src/access/viraccessperm.c

@@ -1,7 +1,7 @@
 /*
  * viraccessperm.c: access control permissions
  *
- * Copyright (C) 2012-2013 Red Hat, Inc.
+ * Copyright (C) 2012-2014 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -39,7 +39,8 @@ VIR_ENUM_IMPL(virAccessPermDomain,
               "start", "stop", "reset",
               "save", "delete",
               "migrate", "snapshot", "suspend", "hibernate", "core_dump", "pm_control",
-              "init_control", "inject_nmi", "send_input", "send_signal", "fs_trim",
+              "init_control", "inject_nmi", "send_input", "send_signal",
+              "fs_trim", "fs_freeze",
               "block_read", "block_write", "mem_read",
               "open_graphics", "open_device", "screenshot",
               "open_namespace");

src/access/viraccessperm.h

@@ -238,10 +238,16 @@ typedef enum {
 
     /**
      * @desc: Trim domain filesystems
-     * @message: Trimming domain filesystems require authorization
+     * @message: Trimming domain filesystems requires authorization
      */
     VIR_ACCESS_PERM_DOMAIN_FS_TRIM,      /* Issue TRIM to guest filesystems */
 
+    /**
+     * @desc: Freeze and thaw domain filesystems
+     * @message: Freezing and thawing domain filesystems requires authorization
+     */
+    VIR_ACCESS_PERM_DOMAIN_FS_FREEZE,    /* Freeze and thaw guest filesystems */
+
     /* Peeking at guest */
 
     /**

src/remote/remote_driver.c

@@ -7768,6 +7768,8 @@ static virDriver remote_driver = {
     .domainMigrateFinish3Params = remoteDomainMigrateFinish3Params, /* 1.1.0 */
     .domainMigrateConfirm3Params = remoteDomainMigrateConfirm3Params, /* 1.1.0 */
     .connectGetCPUModelNames = remoteConnectGetCPUModelNames, /* 1.1.3 */
+    .domainFSFreeze = remoteDomainFSFreeze, /* 1.2.5 */
+    .domainFSThaw = remoteDomainFSThaw, /* 1.2.5 */
 };
 
 static virNetworkDriver network_driver = {

src/remote/remote_protocol.x

@@ -235,6 +235,9 @@ const REMOTE_DOMAIN_JOB_STATS_MAX = 64;
 /* Upper limit on number of CPU models */
 const REMOTE_CONNECT_CPU_MODELS_MAX = 8192;
 
+/* Upper limit on number of mountpoints to frozen */
+const REMOTE_DOMAIN_FSFREEZE_MOUNTPOINTS_MAX = 256;
+
 /* UUID.  VIR_UUID_BUFLEN definition comes from libvirt.h */
 typedef opaque remote_uuid[VIR_UUID_BUFLEN];
 
@@ -2959,6 +2962,25 @@ struct remote_network_event_lifecycle_msg {
     int detail;
 };
 
+struct remote_domain_fsfreeze_args {
+    remote_nonnull_domain dom;
+    remote_nonnull_string mountpoints<REMOTE_DOMAIN_FSFREEZE_MOUNTPOINTS_MAX>; /* (const char **) */
+    unsigned int flags;
+};
+
+struct remote_domain_fsfreeze_ret {
+    int filesystems;
+};
+
+struct remote_domain_fsthaw_args {
+    remote_nonnull_domain dom;
+    remote_nonnull_string mountpoints<REMOTE_DOMAIN_FSFREEZE_MOUNTPOINTS_MAX>; /* (const char **) */
+    unsigned int flags;
+};
+
+struct remote_domain_fsthaw_ret {
+    int filesystems;
+};
 
 
 /*----- Protocol. -----*/
@@ -4289,7 +4311,7 @@ enum remote_procedure {
     /**
      * @generate: both
      * @acl: domain:snapshot
-     * @acl: domain:write:VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE
+     * @acl: domain:fs_freeze:VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE
      */
     REMOTE_PROC_DOMAIN_SNAPSHOT_CREATE_XML = 185,
 
@@ -5275,5 +5297,17 @@ enum remote_procedure {
      * @generate: both
      * @acl: domain:core_dump
      */
-    REMOTE_PROC_DOMAIN_CORE_DUMP_WITH_FORMAT = 334
+    REMOTE_PROC_DOMAIN_CORE_DUMP_WITH_FORMAT = 334,
+
+    /**
+     * @generate: both
+     * @acl: domain:fs_freeze
+     */
+    REMOTE_PROC_DOMAIN_FSFREEZE = 335,
+
+    /**
+     * @generate: both
+     * @acl: domain:fs_freeze
+     */
+    REMOTE_PROC_DOMAIN_FSTHAW = 336
 };

src/remote_protocol-structs

@@ -2427,6 +2427,28 @@ struct remote_network_event_lifecycle_msg {
         int                        event;
         int                        detail;
 };
+struct remote_domain_fsfreeze_args {
+        remote_nonnull_domain      dom;
+        struct {
+                u_int              mountpoints_len;
+                remote_nonnull_string * mountpoints_val;
+        } mountpoints;
+        u_int                      flags;
+};
+struct remote_domain_fsfreeze_ret {
+        int                        filesystems;
+};
+struct remote_domain_fsthaw_args {
+        remote_nonnull_domain      dom;
+        struct {
+                u_int              mountpoints_len;
+                remote_nonnull_string * mountpoints_val;
+        } mountpoints;
+        u_int                      flags;
+};
+struct remote_domain_fsthaw_ret {
+        int                        filesystems;
+};
 enum remote_procedure {
         REMOTE_PROC_CONNECT_OPEN = 1,
         REMOTE_PROC_CONNECT_CLOSE = 2,
@@ -2762,4 +2784,6 @@ enum remote_procedure {
         REMOTE_PROC_DOMAIN_EVENT_CALLBACK_PMSUSPEND_DISK = 332,
         REMOTE_PROC_DOMAIN_EVENT_CALLBACK_DEVICE_REMOVED = 333,
         REMOTE_PROC_DOMAIN_CORE_DUMP_WITH_FORMAT = 334,
+        REMOTE_PROC_DOMAIN_FSFREEZE = 335,
+        REMOTE_PROC_DOMAIN_FSTHAW = 336,
 };

src/rpc/gendispatch.pl

@@ -64,6 +64,8 @@ sub fixup_name {
     $name =~ s/Nmi$/NMI/;
     $name =~ s/Pm/PM/;
     $name =~ s/Fstrim$/FSTrim/;
+    $name =~ s/Fsfreeze$/FSFreeze/;
+    $name =~ s/Fsthaw$/FSThaw/;
     $name =~ s/Scsi/SCSI/;
     $name =~ s/Wwn$/WWN/;