Support For Creating / Removing UBI Blocks

Metin Kaya kayameti at gmail.com
Mon Aug 1 10:54:38 UTC 2016


Hi Baruch Siach,

The attached patch supports -c and -r command line arguments like ubiblock
of mtd-utils.

Regards.

On Mon, Jul 25, 2016 at 11:07 AM, Baruch Siach <baruch at tkos.co.il> wrote:

> Hi Metin Kaya,
>
> On Mon, Jul 25, 2016 at 10:56:41AM +0300, Metin Kaya wrote:
> > do_rmvol also has the same problem.
> > If I use mkblock and rmblock, then they can't be unique.
> > Hence, I renamed ubimkblock as ubicrblock and ubirmblock as ubidlblock.
> > Please see the attached patch.
>
> Now I see that upstream (mtd-utils) name for this utility is just
> 'ubiblock',
> with -c and -r command line parameters for create and remove, respectively.
> Busybox tries to match upstream command line interface as much as
> possible, so
> please use the same name and parameters. As an added bonus 'ubiblock'
> uniquely
> identifies with
>
>   applet_name[3] == 'b'.
>
> Thanks,
> baruch
>
> --
>      http://baruch.siach.name/blog/                  ~. .~   Tk Open
> Systems
> =}------------------------------------------------ooO--U--Ooo------------{=
>    - baruch at tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -
>
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--- ubi_tools.c.orig	2016-05-26 20:42:44.000000000 +0300
+++ ubi_tools.c	2016-08-01 13:50:20.444077944 +0300
@@ -17,6 +17,13 @@
 //config:	help
 //config:	  Detach MTD device from an UBI device.
 //config:
+//config:config UBIBLOCK
+//config:	bool "ubiblock"
+//config:	default y
+//config:	select PLATFORM_LINUX
+//config:	help
+//config:	  Create or remove a block device on top of an UBI volume.
+//config:
 //config:config UBIMKVOL
 //config:	bool "ubimkvol"
 //config:	default y
@@ -47,6 +54,7 @@
 
 //applet:IF_UBIATTACH(APPLET_ODDNAME(ubiattach, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubiattach))
 //applet:IF_UBIDETACH(APPLET_ODDNAME(ubidetach, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubidetach))
+//applet:IF_UBIBLOCK(APPLET_ODDNAME(ubiblock, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubiblock))
 //applet:IF_UBIMKVOL(APPLET_ODDNAME(ubimkvol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubimkvol))
 //applet:IF_UBIRMVOL(APPLET_ODDNAME(ubirmvol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubirmvol))
 //applet:IF_UBIRSVOL(APPLET_ODDNAME(ubirsvol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubirsvol))
@@ -54,6 +62,7 @@
 
 //kbuild:lib-$(CONFIG_UBIATTACH) += ubi_tools.o
 //kbuild:lib-$(CONFIG_UBIDETACH) += ubi_tools.o
+//kbuild:lib-$(CONFIG_UBIBLOCK)  += ubi_tools.o
 //kbuild:lib-$(CONFIG_UBIMKVOL)  += ubi_tools.o
 //kbuild:lib-$(CONFIG_UBIRMVOL)  += ubi_tools.o
 //kbuild:lib-$(CONFIG_UBIRSVOL)  += ubi_tools.o
@@ -68,6 +77,7 @@
 
 #define do_attach (ENABLE_UBIATTACH && applet_name[3] == 'a')
 #define do_detach (ENABLE_UBIDETACH && applet_name[3] == 'd')
+#define do_block  (ENABLE_UBIBLOCK  && applet_name[3] == 'b')
 #define do_mkvol  (ENABLE_UBIMKVOL  && applet_name[3] == 'm')
 #define do_rmvol  (ENABLE_UBIRMVOL  && applet_name[4] == 'm')
 #define do_rsvol  (ENABLE_UBIRSVOL  && applet_name[4] == 's')
@@ -133,9 +143,11 @@
 #define OPTION_s  (1 << 4)
 #define OPTION_a  (1 << 5)
 #define OPTION_t  (1 << 6)
+#define OPTION_c  (1 << 7)
+#define OPTION_r  (1 << 8)
 	if (do_mkvol) {
 		opt_complementary = "-1:d+:n+:a+:O+";
-		opts = getopt32(argv, "md:n:N:s:a:t:O:",
+		opts = getopt32(argv, "md:n:N:s:a:t:O:cr",
 				&dev_num, &vol_id,
 				&vol_name, &size_bytes_str, &alignment, &type,
 				&vid_hdr_offset
@@ -147,7 +159,7 @@
 		opts *= OPTION_s;
 	} else {
 		opt_complementary = "-1:m+:d+:n+:a+";
-		opts = getopt32(argv, "m:d:n:N:s:a:t:",
+		opts = getopt32(argv, "m:d:n:N:s:a:t:cr",
 				&mtd_num, &dev_num, &vol_id,
 				&vol_name, &size_bytes_str, &alignment, &type
 		);
@@ -194,6 +206,19 @@
 		xioctl(fd, UBI_IOCDET, &dev_num);
 	} else
 
+//usage:#define ubiblock_trivial_usage
+//usage:       "-c / -r UBI_CTRL_DEV"
+//usage:#define ubiblock_full_usage "\n\n"
+//usage:       "Create or remove an MTD block\n"
+//usage:     "\n	-c UBI_CTRL_DEV	create an MTD block"
+//usage:     "\n	-r UBI_CTRL_DEV	remove an MTD block"
+	if (do_block) {
+		if (opts & OPTION_c)
+			xioctl(fd, UBI_IOCVOLCRBLK, NULL);
+		else if (opts & OPTION_r)
+			xioctl(fd, UBI_IOCVOLRMBLK, NULL);
+	} else
+
 //usage:#define ubimkvol_trivial_usage
 //usage:       "-N NAME [-s SIZE | -m] UBI_DEVICE"
 //usage:#define ubimkvol_full_usage "\n\n"


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