From 1758551ec9526d56303a2b5cf1f58147e66945ed Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 15 Mar 2021 18:11:11 +1300 Subject: [PATCH] sandbox: Provide a way to bind fixed/removeable devices At present when a file is bound to a host device it is always marked as removeable. Arguably the device is removeable, since it can be unbound at will. However while it is bound, it is not considered removable by the user. Also it is useful to be able to model both fixed and removeable devices for code that distinguishes them. Add a -r flag to the 'host bind' command and plumb it through to provide this feature. Signed-off-by: Simon Glass --- cmd/host.c | 19 +++++++++++++++---- doc/arch/sandbox.rst | 2 ++ drivers/block/sandbox.c | 8 ++++---- include/sandboxblockdev.h | 9 ++++++++- 4 files changed, 29 insertions(+), 9 deletions(-) diff --git a/cmd/host.c b/cmd/host.c index 847bb1d3b5..6aa3d9167a 100644 --- a/cmd/host.c +++ b/cmd/host.c @@ -41,6 +41,7 @@ static int do_host_save(struct cmd_tbl *cmdtp, int flag, int argc, static int do_host_bind(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { + bool removable = false; const char *dev_str; char *file; char *ep; @@ -49,7 +50,16 @@ static int do_host_bind(struct cmd_tbl *cmdtp, int flag, int argc, /* Skip 'bind' */ argc--; argv++; - if (argc < 1 || argv > 2) + if (argc < 2) + return CMD_RET_USAGE; + + if (!strcmp(argv[0], "-r")) { + removable = true; + argc--; + argv++; + } + + if (argc > 2) return CMD_RET_USAGE; dev_str = argv[0]; dev = simple_strtoul(dev_str, &ep, 16); @@ -59,7 +69,7 @@ static int do_host_bind(struct cmd_tbl *cmdtp, int flag, int argc, } file = argc > 1 ? argv[1] : NULL; - return !!host_dev_bind(dev, file); + return !!host_dev_bind(dev, file, removable); } static int do_host_info(struct cmd_tbl *cmdtp, int flag, int argc, @@ -154,7 +164,7 @@ static struct cmd_tbl cmd_host_sub[] = { U_BOOT_CMD_MKENT(ls, 3, 0, do_host_ls, "", ""), U_BOOT_CMD_MKENT(save, 6, 0, do_host_save, "", ""), U_BOOT_CMD_MKENT(size, 3, 0, do_host_size, "", ""), - U_BOOT_CMD_MKENT(bind, 3, 0, do_host_bind, "", ""), + U_BOOT_CMD_MKENT(bind, 4, 0, do_host_bind, "", ""), U_BOOT_CMD_MKENT(info, 3, 0, do_host_info, "", ""), U_BOOT_CMD_MKENT(dev, 0, 1, do_host_dev, "", ""), }; @@ -186,7 +196,8 @@ U_BOOT_CMD( "host save hostfs - [] - " "save a file to host\n" "host size hostfs - - determine size of file on host\n" - "host bind [] - bind \"host\" device to file\n" + "host bind [-r] [] - bind \"host\" device to file\n" + " -r = mark as removable\n" "host info [] - show device binding & info\n" "host dev [] - Set or retrieve the current host device\n" "host commands use the \"hostfs\" device. The \"host\" device is used\n" diff --git a/doc/arch/sandbox.rst b/doc/arch/sandbox.rst index 8b18a22117..e052b6bdb0 100644 --- a/doc/arch/sandbox.rst +++ b/doc/arch/sandbox.rst @@ -389,6 +389,8 @@ the contents of the root directory on the second partion of the image =>host bind 0 ./disk.raw =>ls host 0:2 +The device can be marked removeable with 'host bind -r'. + A disk image can be created using the following commands:: $> truncate -s 1200M ./disk.raw diff --git a/drivers/block/sandbox.c b/drivers/block/sandbox.c index e2f229b15d..1c2c3b4f88 100644 --- a/drivers/block/sandbox.c +++ b/drivers/block/sandbox.c @@ -89,7 +89,7 @@ static unsigned long host_block_write(struct blk_desc *block_dev, } #ifdef CONFIG_BLK -int host_dev_bind(int devnum, char *filename) +int host_dev_bind(int devnum, char *filename, bool removable) { struct host_block_dev *host_dev; struct udevice *dev; @@ -146,7 +146,7 @@ int host_dev_bind(int devnum, char *filename) } desc = blk_get_devnum_by_type(IF_TYPE_HOST, devnum); - desc->removable = 1; + desc->removable = removable; snprintf(desc->vendor, BLK_VEN_SIZE, "U-Boot"); snprintf(desc->product, BLK_PRD_SIZE, "hostfile"); snprintf(desc->revision, BLK_REV_SIZE, "1.0"); @@ -160,7 +160,7 @@ err: return ret; } #else -int host_dev_bind(int dev, char *filename) +int host_dev_bind(int dev, char *filename, bool removable) { struct host_block_dev *host_dev = find_host_device(dev); @@ -195,7 +195,7 @@ int host_dev_bind(int dev, char *filename) blk_dev->block_write = host_block_write; blk_dev->devnum = dev; blk_dev->part_type = PART_TYPE_UNKNOWN; - blk_dev->removable = 1; + blk_dev->removable = removable; snprintf(blk_dev->vendor, BLK_VEN_SIZE, "U-Boot"); snprintf(blk_dev->product, BLK_PRD_SIZE, "hostfile"); snprintf(blk_dev->revision, BLK_REV_SIZE, "1.0"); diff --git a/include/sandboxblockdev.h b/include/sandboxblockdev.h index c1f0afb337..4006e942a0 100644 --- a/include/sandboxblockdev.h +++ b/include/sandboxblockdev.h @@ -14,6 +14,13 @@ struct host_block_dev { int fd; }; -int host_dev_bind(int dev, char *filename); +/** + * host_dev_bind() - Bind or unbind a device + * + * @dev: Device number (0=first slot) + * @filename: Host filename to use, or NULL to unbind + * @removable: true if the block device should mark itself as removable + */ +int host_dev_bind(int dev, char *filename, bool removable); #endif