277 lines
8.3 KiB
C
277 lines
8.3 KiB
C
/* Ported to busybox from mtd-utils.
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*
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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//config:config UBIATTACH
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//config: bool "ubiattach"
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//config: default y
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//config: select PLATFORM_LINUX
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//config: help
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//config: Attach MTD device to an UBI device.
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//config:
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//config:config UBIDETACH
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//config: bool "ubidetach"
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//config: default y
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//config: select PLATFORM_LINUX
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//config: help
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//config: Detach MTD device from an UBI device.
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//config:
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//config:config UBIMKVOL
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//config: bool "ubimkvol"
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//config: default y
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//config: select PLATFORM_LINUX
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//config: help
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//config: Create a UBI volume.
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//config:
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//config:config UBIRMVOL
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//config: bool "ubirmvol"
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//config: default y
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//config: select PLATFORM_LINUX
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//config: help
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//config: Delete a UBI volume.
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//config:
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//config:config UBIRSVOL
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//config: bool "ubirsvol"
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//config: default y
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//config: select PLATFORM_LINUX
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//config: help
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//config: Resize a UBI volume.
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//config:
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//config:config UBIUPDATEVOL
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//config: bool "ubiupdatevol"
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//config: default y
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//config: select PLATFORM_LINUX
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//config: help
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//config: Update a UBI volume.
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//applet:IF_UBIATTACH(APPLET_ODDNAME(ubiattach, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubiattach))
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//applet:IF_UBIDETACH(APPLET_ODDNAME(ubidetach, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubidetach))
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//applet:IF_UBIMKVOL(APPLET_ODDNAME(ubimkvol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubimkvol))
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//applet:IF_UBIRMVOL(APPLET_ODDNAME(ubirmvol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubirmvol))
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//applet:IF_UBIRSVOL(APPLET_ODDNAME(ubirsvol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubirsvol))
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//applet:IF_UBIUPDATEVOL(APPLET_ODDNAME(ubiupdatevol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubiupdatevol))
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//kbuild:lib-$(CONFIG_UBIATTACH) += ubi_tools.o
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//kbuild:lib-$(CONFIG_UBIDETACH) += ubi_tools.o
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//kbuild:lib-$(CONFIG_UBIMKVOL) += ubi_tools.o
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//kbuild:lib-$(CONFIG_UBIRMVOL) += ubi_tools.o
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//kbuild:lib-$(CONFIG_UBIRSVOL) += ubi_tools.o
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//kbuild:lib-$(CONFIG_UBIUPDATEVOL) += ubi_tools.o
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#include "libbb.h"
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/* Some versions of kernel have broken headers, need this hack */
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#ifndef __packed
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# define __packed __attribute__((packed))
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#endif
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#include <mtd/ubi-user.h>
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#define OPTION_M (1 << 0)
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#define OPTION_D (1 << 1)
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#define OPTION_n (1 << 2)
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#define OPTION_N (1 << 3)
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#define OPTION_s (1 << 4)
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#define OPTION_a (1 << 5)
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#define OPTION_t (1 << 6)
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#define do_attach (ENABLE_UBIATTACH && applet_name[3] == 'a')
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#define do_detach (ENABLE_UBIDETACH && applet_name[3] == 'd')
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#define do_mkvol (ENABLE_UBIMKVOL && applet_name[3] == 'm')
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#define do_rmvol (ENABLE_UBIRMVOL && applet_name[4] == 'm')
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#define do_rsvol (ENABLE_UBIRSVOL && applet_name[4] == 's')
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#define do_update (ENABLE_UBIUPDATEVOL && applet_name[3] == 'u')
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//usage:#define ubiattach_trivial_usage
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//usage: "-m MTD_NUM [-d UBI_NUM] UBI_CTRL_DEV"
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//usage:#define ubiattach_full_usage "\n\n"
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//usage: "Attach MTD device to UBI\n"
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//usage: "\n -m MTD_NUM MTD device number to attach"
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//usage: "\n -d UBI_NUM UBI device number to assign"
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//usage:
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//usage:#define ubidetach_trivial_usage
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//usage: "-d UBI_NUM UBI_CTRL_DEV"
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//usage:#define ubidetach_full_usage "\n\n"
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//usage: "Detach MTD device from UBI\n"
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//usage: "\n -d UBI_NUM UBI device number"
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//usage:
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//usage:#define ubimkvol_trivial_usage
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//usage: "UBI_DEVICE -N NAME -s SIZE"
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//usage:#define ubimkvol_full_usage "\n\n"
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//usage: "Create UBI volume\n"
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//usage: "\n -a ALIGNMENT Volume alignment (default 1)"
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//usage: "\n -n VOLID Volume ID, if not specified, it"
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//usage: "\n will be assigned automatically"
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//usage: "\n -N NAME Volume name"
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//usage: "\n -s SIZE Size in bytes"
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//usage: "\n -t TYPE Volume type (static|dynamic)"
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//usage:
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//usage:#define ubirmvol_trivial_usage
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//usage: "UBI_DEVICE -n VOLID"
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//usage:#define ubirmvol_full_usage "\n\n"
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//usage: "Remove UBI volume\n"
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//usage: "\n -n VOLID Volume ID"
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//usage:
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//usage:#define ubirsvol_trivial_usage
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//usage: "UBI_DEVICE -n VOLID -s SIZE"
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//usage:#define ubirsvol_full_usage "\n\n"
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//usage: "Resize UBI volume\n"
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//usage: "\n -n VOLID Volume ID to resize"
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//usage: "\n -s SIZE Size in bytes"
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//usage:
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//usage:#define ubiupdatevol_trivial_usage
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//usage: "UBI_DEVICE [IMG_FILE]"
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//usage:#define ubiupdatevol_full_usage "\n\n"
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//usage: "Update UBI volume\n"
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//usage: "\n -t Truncate UBI volume"
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//usage: "\n -s SIZE Bytes in input (if reading stdin)"
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int ubi_tools_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int ubi_tools_main(int argc UNUSED_PARAM, char **argv)
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{
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unsigned opts;
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char *ubi_ctrl;
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//struct stat st;
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int fd;
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int mtd_num;
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int dev_num = UBI_DEV_NUM_AUTO;
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int vol_id = UBI_VOL_NUM_AUTO;
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char *vol_name = NULL;
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int size_bytes;
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int alignment = 1;
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char *type = NULL;
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opt_complementary = "-1:m+:d+:n+:s+:a+";
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opts = getopt32(argv, "m:d:n:N:s:a:t::",
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&mtd_num, &dev_num, &vol_id,
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&vol_name, &size_bytes, &alignment, &type
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);
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ubi_ctrl = argv[optind];
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fd = xopen(ubi_ctrl, O_RDWR);
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//xfstat(fd, &st, ubi_ctrl);
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//if (!S_ISCHR(st.st_mode))
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// bb_error_msg_and_die("%s: not a char device", ubi_ctrl);
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if (do_attach) {
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struct ubi_attach_req req;
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if (!(opts & OPTION_M))
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bb_error_msg_and_die("%s device not specified", "MTD");
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memset(&req, 0, sizeof(req));
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req.mtd_num = mtd_num;
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req.ubi_num = dev_num;
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xioctl(fd, UBI_IOCATT, &req);
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} else
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if (do_detach) {
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if (!(opts & OPTION_D))
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bb_error_msg_and_die("%s device not specified", "UBI");
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xioctl(fd, UBI_IOCDET, &dev_num);
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} else
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if (do_mkvol) {
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struct ubi_mkvol_req req;
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int vol_name_len;
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if (!(opts & OPTION_s))
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bb_error_msg_and_die("%s size not specified", "UBI");
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if (!(opts & OPTION_N))
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bb_error_msg_and_die("%s name not specified", "UBI");
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vol_name_len = strlen(vol_name);
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if (vol_name_len > UBI_MAX_VOLUME_NAME)
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bb_error_msg_and_die("%s volume name too long", "UBI");
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memset(&req, 0, sizeof(req));
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req.vol_id = vol_id;
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if ((opts & OPTION_t) && type) {
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if (type[0] == 's')
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req.vol_type = UBI_STATIC_VOLUME;
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else
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req.vol_type = UBI_DYNAMIC_VOLUME;
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} else {
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req.vol_type = UBI_DYNAMIC_VOLUME;
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}
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req.alignment = alignment;
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req.bytes = size_bytes;
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strncpy(req.name, vol_name, UBI_MAX_VOLUME_NAME);
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req.name_len = vol_name_len;
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xioctl(fd, UBI_IOCMKVOL, &req);
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} else
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if (do_rmvol) {
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if (!(opts & OPTION_n))
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bb_error_msg_and_die("%s volume id not specified", "UBI");
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xioctl(fd, UBI_IOCRMVOL, &vol_id);
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} else
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if (do_rsvol) {
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struct ubi_rsvol_req req;
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if (!(opts & OPTION_s))
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bb_error_msg_and_die("%s size not specified", "UBI");
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if (!(opts & OPTION_n))
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bb_error_msg_and_die("%s volume id not specified", "UBI");
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memset(&req, 0, sizeof(req));
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req.bytes = size_bytes;
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req.vol_id = vol_id;
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xioctl(fd, UBI_IOCRSVOL, &req);
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} else
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if (do_update) {
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long long bytes;
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if (opts & OPTION_t) {
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// truncate the volume by starting an update for size 0
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bytes = 0;
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xioctl(fd, UBI_IOCVOLUP, &bytes);
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}
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else {
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struct stat st;
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char buf[sizeof("/sys/class/ubi/ubi%d_%d/usable_eb_size") + 2 * sizeof(int)*3];
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int input_fd;
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unsigned ubinum, volnum;
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unsigned leb_size;
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ssize_t len;
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char *input_data;
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// Make assumption that device not is in normal format.
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// Removes need for scanning sysfs tree as full libubi does
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if (sscanf(ubi_ctrl, "/dev/ubi%u_%u", &ubinum, &volnum) != 2)
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bb_error_msg_and_die("%s volume node not in correct format", "UBI");
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sprintf(buf, "/sys/class/ubi/ubi%u_%u/usable_eb_size", ubinum, volnum);
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if (open_read_close(buf, buf, sizeof(buf)) <= 0)
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bb_error_msg_and_die("%s could not get LEB size", "UBI");
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if (sscanf(buf, "%u", &leb_size) != 1)
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bb_error_msg_and_die("%s could not get LEB size", "UBI");
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if (opts & OPTION_s) {
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input_fd = 0;
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} else {
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if (!argv[optind+1])
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bb_show_usage();
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xstat(argv[optind+1], &st);
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size_bytes = st.st_size;
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input_fd = xopen(argv[optind+1], O_RDONLY);
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}
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bytes = size_bytes;
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xioctl(fd, UBI_IOCVOLUP, &bytes);
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input_data = xmalloc(leb_size);
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while ((len = full_read(input_fd, input_data, leb_size)) > 0) {
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xwrite(fd, input_data, len);
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}
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if (len < 0)
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bb_error_msg_and_die("%s volume update failed", "UBI");
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if (ENABLE_FEATURE_CLEAN_UP)
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close(input_fd);
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}
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}
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if (ENABLE_FEATURE_CLEAN_UP)
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close(fd);
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return EXIT_SUCCESS;
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}
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