| H A D | ubd_kern.c | 266 struct ubd *ubd_dev; ubd_setup_common() local
319 ubd_dev = &ubd_devs[n]; ubd_setup_common()
320 if(ubd_dev->file != NULL){ ubd_setup_common()
338 ubd_dev->no_cow = 1; ubd_setup_common()
341 ubd_dev->shared = 1; ubd_setup_common()
367 if(ubd_dev->no_cow){ ubd_setup_common()
377 ubd_dev->file = str; ubd_setup_common()
378 ubd_dev->cow.file = backing_file; ubd_setup_common()
379 ubd_dev->boot_openflags = flags; ubd_setup_common()
497 static inline int ubd_file_size(struct ubd *ubd_dev, __u64 *size_out) ubd_file_size() argument
511 if (ubd_dev->file && ubd_dev->cow.file) { ubd_file_size()
512 file = ubd_dev->cow.file; ubd_file_size()
517 fd = os_open_file(ubd_dev->file, of_read(OPENFLAGS()), 0); ubd_file_size()
526 file = ubd_dev->file; ubd_file_size()
720 static void ubd_close_dev(struct ubd *ubd_dev) ubd_close_dev() argument
722 os_close_file(ubd_dev->fd); ubd_close_dev()
723 if(ubd_dev->cow.file == NULL) ubd_close_dev()
726 os_close_file(ubd_dev->cow.fd); ubd_close_dev()
727 vfree(ubd_dev->cow.bitmap); ubd_close_dev()
728 ubd_dev->cow.bitmap = NULL; ubd_close_dev()
731 static int ubd_open_dev(struct ubd *ubd_dev) ubd_open_dev() argument
738 ubd_dev->openflags = ubd_dev->boot_openflags; ubd_open_dev()
740 create_ptr = (ubd_dev->cow.file != NULL) ? &create_cow : NULL; ubd_open_dev()
741 back_ptr = ubd_dev->no_cow ? NULL : &ubd_dev->cow.file; ubd_open_dev()
743 fd = open_ubd_file(ubd_dev->file, &ubd_dev->openflags, ubd_dev->shared, ubd_open_dev()
744 back_ptr, &ubd_dev->cow.bitmap_offset, ubd_open_dev()
745 &ubd_dev->cow.bitmap_len, &ubd_dev->cow.data_offset, ubd_open_dev()
749 fd = create_cow_file(ubd_dev->file, ubd_dev->cow.file, ubd_open_dev()
750 ubd_dev->openflags, 1 << 9, PAGE_SIZE, ubd_open_dev()
751 &ubd_dev->cow.bitmap_offset, ubd_open_dev()
752 &ubd_dev->cow.bitmap_len, ubd_open_dev()
753 &ubd_dev->cow.data_offset); ubd_open_dev()
756 "\"%s\"\n", ubd_dev->file, ubd_dev->cow.file); ubd_open_dev()
761 printk("Failed to open '%s', errno = %d\n", ubd_dev->file, ubd_open_dev()
765 ubd_dev->fd = fd; ubd_open_dev()
767 if(ubd_dev->cow.file != NULL){ ubd_open_dev()
768 blk_queue_max_hw_sectors(ubd_dev->queue, 8 * sizeof(long)); ubd_open_dev()
771 ubd_dev->cow.bitmap = vmalloc(ubd_dev->cow.bitmap_len); ubd_open_dev()
772 if(ubd_dev->cow.bitmap == NULL){ ubd_open_dev()
778 err = read_cow_bitmap(ubd_dev->fd, ubd_dev->cow.bitmap, ubd_open_dev()
779 ubd_dev->cow.bitmap_offset, ubd_open_dev()
780 ubd_dev->cow.bitmap_len); ubd_open_dev()
784 flags = ubd_dev->openflags; ubd_open_dev()
786 err = open_ubd_file(ubd_dev->cow.file, &flags, ubd_dev->shared, NULL, ubd_open_dev()
789 ubd_dev->cow.fd = err; ubd_open_dev()
793 os_close_file(ubd_dev->fd); ubd_open_dev()
799 struct ubd *ubd_dev = dev_get_drvdata(dev); ubd_device_release() local
801 blk_cleanup_queue(ubd_dev->queue); ubd_device_release()
802 *ubd_dev = ((struct ubd) DEFAULT_UBD); ubd_device_release()
845 struct ubd *ubd_dev = &ubd_devs[n]; ubd_add() local
848 if(ubd_dev->file == NULL) ubd_add()
851 err = ubd_file_size(ubd_dev, &ubd_dev->size); ubd_add()
857 ubd_dev->size = ROUND_BLOCK(ubd_dev->size); ubd_add()
859 INIT_LIST_HEAD(&ubd_dev->restart); ubd_add()
860 sg_init_table(ubd_dev->sg, MAX_SG); ubd_add()
863 ubd_dev->queue = blk_init_queue(do_ubd_request, &ubd_dev->lock); ubd_add()
864 if (ubd_dev->queue == NULL) { ubd_add()
868 ubd_dev->queue->queuedata = ubd_dev; ubd_add()
869 blk_queue_flush(ubd_dev->queue, REQ_FLUSH); ubd_add()
871 blk_queue_max_segments(ubd_dev->queue, MAX_SG); ubd_add()
872 err = ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, &ubd_gendisk[n]); ubd_add()
879 ubd_disk_register(fake_major, ubd_dev->size, n, ubd_add()
894 blk_cleanup_queue(ubd_dev->queue); ubd_add()
937 struct ubd *ubd_dev; ubd_get_config() local
946 ubd_dev = &ubd_devs[n]; ubd_get_config()
949 if(ubd_dev->file == NULL){ ubd_get_config()
954 CONFIG_CHUNK(str, size, len, ubd_dev->file, 0); ubd_get_config()
956 if(ubd_dev->cow.file != NULL){ ubd_get_config()
958 CONFIG_CHUNK(str, size, len, ubd_dev->cow.file, 1); ubd_get_config()
980 struct ubd *ubd_dev; ubd_remove() local
985 ubd_dev = &ubd_devs[n]; ubd_remove()
987 if(ubd_dev->file == NULL) ubd_remove()
992 if(ubd_dev->count > 0) ubd_remove()
1008 platform_device_unregister(&ubd_dev->pdev); ubd_remove()
1036 struct ubd *ubd_dev = &ubd_devs[0]; ubd0_init() local
1039 if(ubd_dev->file == NULL) ubd0_init()
1040 ubd_dev->file = "root_fs"; ubd0_init()
1116 struct ubd *ubd_dev = disk->private_data; ubd_open() local
1120 if(ubd_dev->count == 0){ ubd_open()
1121 err = ubd_open_dev(ubd_dev); ubd_open()
1124 disk->disk_name, ubd_dev->file, -err); ubd_open()
1128 ubd_dev->count++; ubd_open()
1129 set_disk_ro(disk, !ubd_dev->openflags.w); ubd_open()
1133 /*if((mode & FMODE_WRITE) && !ubd_dev->openflags.w){ ubd_open()
1134 if(--ubd_dev->count == 0) ubd_close_dev(ubd_dev); ubd_open()
1144 struct ubd *ubd_dev = disk->private_data; ubd_release() local
1147 if(--ubd_dev->count == 0) ubd_release()
1148 ubd_close_dev(ubd_dev); ubd_release()
1218 struct ubd *ubd_dev = disk->private_data; prepare_request() local
1221 io_req->fds[0] = (ubd_dev->cow.file != NULL) ? ubd_dev->cow.fd : prepare_request()
1222 ubd_dev->fd; prepare_request()
1223 io_req->fds[1] = ubd_dev->fd; prepare_request()
1232 io_req->offsets[1] = ubd_dev->cow.data_offset; prepare_request()
1236 if(ubd_dev->cow.file != NULL) prepare_request()
1237 cowify_req(io_req, ubd_dev->cow.bitmap, prepare_request()
1238 ubd_dev->cow.bitmap_offset, ubd_dev->cow.bitmap_len); prepare_request()
1247 struct ubd *ubd_dev = disk->private_data; prepare_flush_request() local
1250 io_req->fds[0] = (ubd_dev->cow.file != NULL) ? ubd_dev->cow.fd : prepare_flush_request()
1251 ubd_dev->fd; prepare_flush_request()
1333 struct ubd *ubd_dev = bdev->bd_disk->private_data; ubd_getgeo() local
1337 geo->cylinders = ubd_dev->size / (128 * 32 * 512); ubd_getgeo()
1344 struct ubd *ubd_dev = bdev->bd_disk->private_data; ubd_ioctl() local
1351 ubd_id[ATA_ID_CYLS] = ubd_dev->size / (128 * 32 * 512); ubd_ioctl()
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