]> wimlib.net Git - wimlib/blobdiff - src/mount_image.c
mount_image.c: Get rid of anonymous union
[wimlib] / src / mount_image.c
index fa7594b7b0efb38f1428f87d7ea349df28d4a363..b3ae030da0a4c0c875beeb6304a71925ed46d98f 100644 (file)
@@ -766,7 +766,8 @@ static int inode_close_fds(struct inode *inode)
 }
 
 /* Overwrites the WIM file, with changes saved. */
-static int rebuild_wim(struct wimfs_context *ctx, int write_flags)
+static int rebuild_wim(struct wimfs_context *ctx, int write_flags,
+                      wimlib_progress_func_t progress_func)
 {
        int ret;
        struct lookup_table_entry *lte, *tmp;
@@ -787,7 +788,7 @@ static int rebuild_wim(struct wimfs_context *ctx, int write_flags)
        }
 
        xml_update_image_info(w, w->current_image);
-       ret = wimlib_overwrite(w, write_flags, 0, NULL);
+       ret = wimlib_overwrite(w, write_flags, 0, progress_func);
        if (ret != 0)
                ERROR("Failed to commit changes to mounted WIM image");
        return ret;
@@ -988,6 +989,7 @@ struct unmount_msg_hdr {
 struct msg_unmount_request {
        struct unmount_msg_hdr hdr;
        u32 unmount_flags;
+       u8 want_progress_messages;
 } PACKED;
 
 struct msg_daemon_info {
@@ -1001,39 +1003,49 @@ struct msg_unmount_finished {
        int32_t status;
 } PACKED;
 
+struct msg_write_streams_progress {
+       struct unmount_msg_hdr hdr;
+       union wimlib_progress_info info;
+} PACKED;
+
 enum {
        MSG_TYPE_UNMOUNT_REQUEST,
        MSG_TYPE_DAEMON_INFO,
+       MSG_TYPE_WRITE_STREAMS_PROGRESS,
        MSG_TYPE_UNMOUNT_FINISHED,
        MSG_TYPE_MAX,
 };
 
-struct msg_handler_context {
-       bool is_daemon;
+struct msg_handler_context_hdr {
        int timeout_seconds;
-       union {
-               struct {
-                       pid_t daemon_pid;
-                       int mount_flags;
-                       int status;
-               } unmount;
-               struct {
-                       struct wimfs_context *wimfs_ctx;
-               } daemon;
-       };
 };
 
-static int send_unmount_request_msg(mqd_t mq, int unmount_flags)
+struct unmount_msg_handler_context {
+       struct msg_handler_context_hdr hdr;
+       pid_t daemon_pid;
+       int mount_flags;
+       int status;
+       wimlib_progress_func_t progress_func;
+};
+
+struct daemon_msg_handler_context {
+       struct msg_handler_context_hdr hdr;
+       struct wimfs_context *wimfs_ctx;
+};
+
+static int send_unmount_request_msg(mqd_t mq, int unmount_flags,
+                                   u8 want_progress_messages)
 {
        DEBUG("Sending unmount request msg");
        struct msg_unmount_request msg = {
                .hdr = {
-                       .min_version = WIMLIB_MAKEVERSION(1, 2, 0),
+                       .min_version = WIMLIB_MAKEVERSION(1, 2, 1),
                        .cur_version = WIMLIB_VERSION_CODE,
                        .msg_type    = MSG_TYPE_UNMOUNT_REQUEST,
                        .msg_size    = sizeof(msg),
                },
                .unmount_flags = unmount_flags,
+               .want_progress_messages = want_progress_messages,
        };
 
        if (mq_send(mq, (void*)&msg, sizeof(msg), 1)) {
@@ -1050,7 +1062,7 @@ static int send_daemon_info_msg(mqd_t mq, pid_t pid, int mount_flags)
 
        struct msg_daemon_info msg = {
                .hdr = {
-                       .min_version = WIMLIB_MAKEVERSION(1, 2, 0),
+                       .min_version = WIMLIB_MAKEVERSION(1, 2, 1),
                        .cur_version = WIMLIB_VERSION_CODE,
                        .msg_type = MSG_TYPE_DAEMON_INFO,
                        .msg_size = sizeof(msg),
@@ -1070,7 +1082,7 @@ static void send_unmount_finished_msg(mqd_t mq, int status)
        DEBUG("Sending unmount finished msg");
        struct msg_unmount_finished msg = {
                .hdr = {
-                       .min_version = WIMLIB_MAKEVERSION(1, 2, 0),
+                       .min_version = WIMLIB_MAKEVERSION(1, 2, 1),
                        .cur_version = WIMLIB_VERSION_CODE,
                        .msg_type = MSG_TYPE_UNMOUNT_FINISHED,
                        .msg_size = sizeof(msg),
@@ -1081,26 +1093,52 @@ static void send_unmount_finished_msg(mqd_t mq, int status)
                ERROR_WITH_ERRNO("Failed to send status to unmount process");
 }
 
-static int msg_unmount_request_handler(const void *_msg,
-                                      struct msg_handler_context *handler_ctx)
+static int unmount_progress_func(enum wimlib_progress_msg msg,
+                                const union wimlib_progress_info *info)
+{
+       if (msg == WIMLIB_PROGRESS_MSG_WRITE_STREAMS) {
+               struct msg_write_streams_progress msg = {
+                       .hdr = {
+                               .min_version = WIMLIB_MAKEVERSION(1, 2, 1),
+                               .cur_version = WIMLIB_VERSION_CODE,
+                               .msg_type = MSG_TYPE_WRITE_STREAMS_PROGRESS,
+                               .msg_size = sizeof(msg),
+                       },
+                       .info = *info,
+               };
+               if (mq_send(wimfs_get_context()->daemon_to_unmount_mq,
+                           (void*)&msg, sizeof(msg), 1))
+               {
+                       ERROR_WITH_ERRNO("Failed to send progress information "
+                                        "to unmount process");
+               }
+       }
+       return 0;
+}
+
+static int msg_unmount_request_handler(const void *_msg, void *_handler_ctx)
 {
-       const struct msg_unmount_request *msg;
+       const struct msg_unmount_request *msg = _msg;
+       struct daemon_msg_handler_context *handler_ctx = _handler_ctx;
        struct wimfs_context *wimfs_ctx;
        int status = 0;
        int ret;
        int unmount_flags;
+       wimlib_progress_func_t progress_func;
 
        DEBUG("Handling unmount request msg");
 
-       msg = _msg;
-       wimfs_ctx = handler_ctx->daemon.wimfs_ctx;
-
+       wimfs_ctx = handler_ctx->wimfs_ctx;
        if (msg->hdr.msg_size < sizeof(*msg)) {
                status = WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
                goto out;
        }
 
        unmount_flags = msg->unmount_flags;
+       if (msg->want_progress_messages)
+               progress_func = unmount_progress_func;
+       else
+               progress_func = NULL;
 
        ret = send_daemon_info_msg(wimfs_ctx->daemon_to_unmount_mq, getpid(),
                                   wimfs_ctx->mount_flags);
@@ -1118,7 +1156,8 @@ static int msg_unmount_request_handler(const void *_msg,
                                write_flags |= WIMLIB_WRITE_FLAG_REBUILD;
                        if (unmount_flags & WIMLIB_UNMOUNT_FLAG_RECOMPRESS)
                                write_flags |= WIMLIB_WRITE_FLAG_RECOMPRESS;
-                       status = rebuild_wim(wimfs_ctx, write_flags);
+                       status = rebuild_wim(wimfs_ctx, write_flags,
+                                            progress_func);
                }
        } else {
                DEBUG("Read-only mount");
@@ -1138,46 +1177,65 @@ out:
        return MSG_BREAK_LOOP;
 }
 
-static int msg_daemon_info_handler(const void *_msg,
-                                  struct msg_handler_context *handler_ctx)
+static int msg_daemon_info_handler(const void *_msg, void *_handler_ctx)
 {
        const struct msg_daemon_info *msg = _msg;
+       struct unmount_msg_handler_context *handler_ctx = _handler_ctx;
+
        DEBUG("Handling daemon info msg");
        if (msg->hdr.msg_size < sizeof(*msg))
                return WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
-       handler_ctx->unmount.daemon_pid = msg->daemon_pid;
-       handler_ctx->unmount.mount_flags = msg->mount_flags;
-       handler_ctx->timeout_seconds = 1;
+       handler_ctx->daemon_pid = msg->daemon_pid;
+       handler_ctx->mount_flags = msg->mount_flags;
+       handler_ctx->hdr.timeout_seconds = 1;
        DEBUG("pid of daemon is %d; mount flags were %#x",
-             handler_ctx->unmount.daemon_pid,
-             handler_ctx->unmount.mount_flags);
+             handler_ctx->daemon_pid,
+             handler_ctx->mount_flags);
        return 0;
 }
 
-static int msg_unmount_finished_handler(const void *_msg,
-                                       struct msg_handler_context *handler_ctx)
+static int msg_write_streams_progress_handler(const void *_msg,
+                                             void *_handler_ctx)
+{
+       const struct msg_write_streams_progress *msg = _msg;
+       struct unmount_msg_handler_context *handler_ctx = _handler_ctx;
+
+       if (msg->hdr.msg_size < sizeof(*msg))
+               return WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
+       if (handler_ctx->progress_func) {
+               handler_ctx->progress_func(WIMLIB_PROGRESS_MSG_WRITE_STREAMS,
+                                          &msg->info);
+       }
+       return 0;
+}
+
+static int msg_unmount_finished_handler(const void *_msg, void *_handler_ctx)
 {
        const struct msg_unmount_finished *msg = _msg;
+       struct unmount_msg_handler_context *handler_ctx = _handler_ctx;
+
        DEBUG("Handling unmount finished message");
        if (msg->hdr.msg_size < sizeof(*msg))
                return WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
-       handler_ctx->unmount.status = msg->status;
-       DEBUG("status is %d", handler_ctx->unmount.status);
+       handler_ctx->status = msg->status;
+       DEBUG("status is %d", handler_ctx->status);
        return MSG_BREAK_LOOP;
 }
 
-static int unmount_timed_out_cb(struct msg_handler_context *handler_ctx)
+static int unmount_timed_out_cb(void *_handler_ctx)
 {
-       if (handler_ctx->unmount.daemon_pid == 0) {
+       struct unmount_msg_handler_context *handler_ctx = _handler_ctx;
+
+       if (handler_ctx->daemon_pid == 0) {
                goto out_crashed;
        } else {
-               kill(handler_ctx->unmount.daemon_pid, 0);
+               kill(handler_ctx->daemon_pid, 0);
                if (errno == ESRCH) {
                        goto out_crashed;
                } else {
                        DEBUG("Filesystem daemon is still alive... "
                              "Waiting another %d seconds\n",
-                             handler_ctx->timeout_seconds);
+                             handler_ctx->hdr.timeout_seconds);
                        return 0;
                }
        }
@@ -1187,17 +1245,17 @@ out_crashed:
        return WIMLIB_ERR_FILESYSTEM_DAEMON_CRASHED;
 }
 
-static int daemon_timed_out_cb(struct msg_handler_context *handler_ctx)
+static int daemon_timed_out_cb(void *_handler_ctx)
 {
-       DEBUG("Timed out");
+       ERROR("Timed out waiting for unmount request! "
+             "Changes to the mounted WIM will not be committed.");
        return WIMLIB_ERR_TIMEOUT;
 }
 
-typedef int (*msg_handler_t)(const void *_msg,
-                            struct msg_handler_context *handler_ctx);
+typedef int (*msg_handler_t)(const void *_msg, void *_handler_ctx);
 
 struct msg_handler_callbacks {
-       int (*timed_out)(struct msg_handler_context *);
+       int (*timed_out)(void * _handler_ctx);
        msg_handler_t msg_handlers[MSG_TYPE_MAX];
 };
 
@@ -1205,6 +1263,7 @@ static const struct msg_handler_callbacks unmount_msg_handler_callbacks = {
        .timed_out = unmount_timed_out_cb,
        .msg_handlers = {
                [MSG_TYPE_DAEMON_INFO] = msg_daemon_info_handler,
+               [MSG_TYPE_WRITE_STREAMS_PROGRESS] = msg_write_streams_progress_handler,
                [MSG_TYPE_UNMOUNT_FINISHED] = msg_unmount_finished_handler,
        },
 };
@@ -1216,7 +1275,8 @@ static const struct msg_handler_callbacks daemon_msg_handler_callbacks = {
        },
 };
 
-static int receive_message(mqd_t mq, struct msg_handler_context *handler_ctx,
+static int receive_message(mqd_t mq,
+                          struct msg_handler_context_hdr *handler_ctx,
                           const msg_handler_t msg_handlers[],
                           long mailbox_size, void *mailbox)
 {
@@ -1262,7 +1322,7 @@ static int receive_message(mqd_t mq, struct msg_handler_context *handler_ctx,
 
 static int message_loop(mqd_t mq,
                        const struct msg_handler_callbacks *callbacks,
-                       struct msg_handler_context *handler_ctx)
+                       struct msg_handler_context_hdr *handler_ctx)
 {
        static const size_t MAX_MSG_SIZE = 512;
        long msgsize;
@@ -1403,26 +1463,19 @@ static int wimfs_chmod(const char *path, mode_t mask)
 /* Called when the filesystem is unmounted. */
 static void wimfs_destroy(void *p)
 {
-       struct wimfs_context *wimfs_ctx;
-
-       wimfs_ctx = wimfs_get_context();
-
-       if (open_message_queues(wimfs_ctx, true))
-               return;
-
-       struct msg_handler_context handler_ctx = {
-               .is_daemon = true,
-               .timeout_seconds = 5,
-               .daemon = {
+       struct wimfs_context *wimfs_ctx = wimfs_get_context();
+       if (open_message_queues(wimfs_ctx, true) == 0) {
+               struct daemon_msg_handler_context handler_ctx = {
+                       .hdr = {
+                               .timeout_seconds = 5,
+                       },
                        .wimfs_ctx = wimfs_ctx,
-               },
-       };
-
-       message_loop(wimfs_ctx->unmount_to_daemon_mq,
-                    &daemon_msg_handler_callbacks,
-                    &handler_ctx);
-
-       close_message_queues(wimfs_ctx);
+               };
+               message_loop(wimfs_ctx->unmount_to_daemon_mq,
+                            &daemon_msg_handler_callbacks,
+                            &handler_ctx.hdr);
+               close_message_queues(wimfs_ctx);
+       }
 }
 
 #if 0
@@ -2460,7 +2513,8 @@ WIMLIBAPI int wimlib_unmount_image(const char *dir, int unmount_flags,
                goto out_free_message_queue_names;
 
        ret = send_unmount_request_msg(wimfs_ctx.unmount_to_daemon_mq,
-                                      unmount_flags);
+                                      unmount_flags,
+                                      progress_func != NULL);
        if (ret != 0)
                goto out_close_message_queues;
 
@@ -2468,19 +2522,19 @@ WIMLIBAPI int wimlib_unmount_image(const char *dir, int unmount_flags,
        if (ret != 0)
                goto out_close_message_queues;
 
-       struct msg_handler_context handler_ctx = {
-               .is_daemon = false,
-               .timeout_seconds = 5,
-               .unmount = {
-                       .daemon_pid = 0,
+       struct unmount_msg_handler_context handler_ctx = {
+               .hdr = {
+                       .timeout_seconds = 5,
                },
+               .daemon_pid = 0,
+               .progress_func = progress_func,
        };
 
        ret = message_loop(wimfs_ctx.daemon_to_unmount_mq,
                           &unmount_msg_handler_callbacks,
-                          &handler_ctx);
+                          &handler_ctx.hdr);
        if (ret == 0)
-               ret = handler_ctx.unmount.status;
+               ret = handler_ctx.status;
 out_close_message_queues:
        close_message_queues(&wimfs_ctx);
 out_free_message_queue_names: