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- /*
- * Ported to busybox from mtd-utils.
- *
- * Licensed under GPLv2, see file LICENSE in this source tree.
- */
- //config:config UBIATTACH
- //config: bool "ubiattach (4.2 kb)"
- //config: default y
- //config: help
- //config: Attach MTD device to an UBI device.
- //config:
- //config:config UBIDETACH
- //config: bool "ubidetach (4.1 kb)"
- //config: default y
- //config: help
- //config: Detach MTD device from an UBI device.
- //config:
- //config:config UBIMKVOL
- //config: bool "ubimkvol (5.3 kb)"
- //config: default y
- //config: help
- //config: Create a UBI volume.
- //config:
- //config:config UBIRMVOL
- //config: bool "ubirmvol (4.9 kb)"
- //config: default y
- //config: help
- //config: Delete a UBI volume.
- //config:
- //config:config UBIRSVOL
- //config: bool "ubirsvol (4.2 kb)"
- //config: default y
- //config: help
- //config: Resize a UBI volume.
- //config:
- //config:config UBIUPDATEVOL
- //config: bool "ubiupdatevol (5.2 kb)"
- //config: default y
- //config: help
- //config: Update a UBI volume.
- // APPLET_ODDNAME:name main location suid_type help
- //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_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))
- //applet:IF_UBIUPDATEVOL(APPLET_ODDNAME(ubiupdatevol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubiupdatevol))
- /* not NOEXEC: if flash operation stalls, use less memory in "hung" process */
- //kbuild:lib-$(CONFIG_UBIATTACH) += ubi_tools.o
- //kbuild:lib-$(CONFIG_UBIDETACH) += ubi_tools.o
- //kbuild:lib-$(CONFIG_UBIMKVOL) += ubi_tools.o
- //kbuild:lib-$(CONFIG_UBIRMVOL) += ubi_tools.o
- //kbuild:lib-$(CONFIG_UBIRSVOL) += ubi_tools.o
- //kbuild:lib-$(CONFIG_UBIUPDATEVOL) += ubi_tools.o
- #include "libbb.h"
- /* Some versions of kernel have broken headers, need this hack */
- #ifndef __packed
- # define __packed __attribute__((packed))
- #endif
- #include <mtd/ubi-user.h>
- #define UBI_APPLET_CNT (0 \
- + ENABLE_UBIATTACH \
- + ENABLE_UBIDETACH \
- + ENABLE_UBIMKVOL \
- + ENABLE_UBIRMVOL \
- + ENABLE_UBIRSVOL \
- + ENABLE_UBIUPDATEVOL \
- )
- #define do_attach (ENABLE_UBIATTACH && (UBI_APPLET_CNT == 1 || applet_name[4] == 't'))
- #define do_detach (ENABLE_UBIDETACH && (UBI_APPLET_CNT == 1 || applet_name[4] == 'e'))
- #define do_mkvol (ENABLE_UBIMKVOL && (UBI_APPLET_CNT == 1 || applet_name[4] == 'k'))
- #define do_rmvol (ENABLE_UBIRMVOL && (UBI_APPLET_CNT == 1 || applet_name[4] == 'm'))
- #define do_rsvol (ENABLE_UBIRSVOL && (UBI_APPLET_CNT == 1 || applet_name[4] == 's'))
- #define do_update (ENABLE_UBIUPDATEVOL && (UBI_APPLET_CNT == 1 || applet_name[4] == 'p'))
- static unsigned get_num_from_file(const char *path, unsigned max)
- {
- char buf[sizeof(long long)*3];
- unsigned long long num;
- if (open_read_close(path, buf, sizeof(buf)) < 0)
- bb_perror_msg_and_die("can't open '%s'", path);
- /* It can be \n terminated, xatoull won't work well */
- if (sscanf(buf, "%llu", &num) != 1 || num > max)
- bb_error_msg_and_die("number in '%s' is malformed or too large", path);
- return num;
- }
- /* To prevent malloc(1G) accidents */
- #define MAX_SANE_ERASEBLOCK (16*1024*1024)
- int ubi_tools_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
- int ubi_tools_main(int argc UNUSED_PARAM, char **argv)
- {
- static const struct suffix_mult size_suffixes[] ALIGN_SUFFIX = {
- { "KiB", 1024 },
- { "MiB", 1024*1024 },
- { "GiB", 1024*1024*1024 },
- { "", 0 }
- };
- unsigned opts;
- char *ubi_ctrl;
- int fd;
- int mtd_num;
- int dev_num = UBI_DEV_NUM_AUTO;
- int vol_id = UBI_VOL_NUM_AUTO;
- int vid_hdr_offset = 0;
- char *vol_name;
- unsigned long long size_bytes = size_bytes; /* for compiler */
- char *size_bytes_str;
- int alignment = 1;
- char *type;
- union {
- struct ubi_attach_req attach_req;
- struct ubi_mkvol_req mkvol_req;
- struct ubi_rsvol_req rsvol_req;
- } req_structs;
- #define attach_req req_structs.attach_req
- #define mkvol_req req_structs.mkvol_req
- #define rsvol_req req_structs.rsvol_req
- char path[sizeof("/sys/class/ubi/ubi%d_%d/usable_eb_size")
- + 2 * sizeof(int)*3 + /*just in case:*/ 16];
- #define path_sys_class_ubi_ubi (path + sizeof("/sys/class/ubi/ubi")-1)
- strcpy(path, "/sys/class/ubi/ubi");
- memset(&req_structs, 0, sizeof(req_structs));
- #define OPTION_m (1 << 0)
- #define OPTION_d (1 << 1)
- #define OPTION_n (1 << 2)
- #define OPTION_N (1 << 3)
- #define OPTION_s (1 << 4)
- #define OPTION_a (1 << 5)
- #define OPTION_t (1 << 6)
- if (do_mkvol) {
- opts = getopt32(argv, "^" "md:+n:+N:s:a:+t:O:+" "\0" "-1",
- &dev_num, &vol_id,
- &vol_name, &size_bytes_str, &alignment, &type,
- &vid_hdr_offset
- );
- } else
- if (do_update) {
- opts = getopt32(argv, "^" "s:at" "\0" "-1", &size_bytes_str);
- opts *= OPTION_s;
- } else {
- opts = getopt32(argv, "^" "m:+d:+n:+N:s:a:+t:" "\0" "-1",
- &mtd_num, &dev_num, &vol_id,
- &vol_name, &size_bytes_str, &alignment, &type
- );
- }
- if (opts & OPTION_s)
- size_bytes = xatoull_sfx(size_bytes_str, size_suffixes);
- argv += optind;
- ubi_ctrl = *argv++;
- fd = xopen(ubi_ctrl, O_RDWR);
- //xfstat(fd, &st, ubi_ctrl);
- //if (!S_ISCHR(st.st_mode))
- // bb_error_msg_and_die("%s: not a char device", ubi_ctrl);
- //usage:#define ubiattach_trivial_usage
- //usage: "-m MTD_NUM [-d UBI_NUM] [-O VID_HDR_OFF] UBI_CTRL_DEV"
- //usage:#define ubiattach_full_usage "\n\n"
- //usage: "Attach MTD device to UBI\n"
- //usage: "\n -m MTD_NUM MTD device number to attach"
- //usage: "\n -d UBI_NUM UBI device number to assign"
- //usage: "\n -O VID_HDR_OFF VID header offset"
- if (do_attach) {
- if (!(opts & OPTION_m))
- bb_error_msg_and_die("%s device not specified", "MTD");
- attach_req.mtd_num = mtd_num;
- attach_req.ubi_num = dev_num;
- attach_req.vid_hdr_offset = vid_hdr_offset;
- xioctl(fd, UBI_IOCATT, &attach_req);
- } else
- //usage:#define ubidetach_trivial_usage
- //usage: "-d UBI_NUM UBI_CTRL_DEV"
- //usage:#define ubidetach_full_usage "\n\n"
- //usage: "Detach MTD device from UBI\n"
- //usage: "\n -d UBI_NUM UBI device number"
- if (do_detach) {
- if (!(opts & OPTION_d))
- bb_error_msg_and_die("%s device not specified", "UBI");
- /* FIXME? kernel expects int32_t* here: */
- xioctl(fd, UBI_IOCDET, &dev_num);
- } else
- //usage:#define ubimkvol_trivial_usage
- //usage: "-N NAME [-s SIZE | -m] UBI_DEVICE"
- //usage:#define ubimkvol_full_usage "\n\n"
- //usage: "Create UBI volume\n"
- //usage: "\n -a ALIGNMENT Volume alignment (default 1)"
- //usage: "\n -m Set volume size to maximum available"
- //usage: "\n -n VOLID Volume ID. If not specified,"
- //usage: "\n assigned automatically"
- //usage: "\n -N NAME Volume name"
- //usage: "\n -s SIZE Size in bytes"
- //usage: "\n -t TYPE Volume type (static|dynamic)"
- if (do_mkvol) {
- if (opts & OPTION_m) {
- unsigned leb_avail;
- unsigned leb_size;
- unsigned num;
- char *p;
- num = ubi_devnum_from_devname(ubi_ctrl);
- p = path_sys_class_ubi_ubi + sprintf(path_sys_class_ubi_ubi, "%u/", num);
- strcpy(p, "avail_eraseblocks");
- leb_avail = get_num_from_file(path, UINT_MAX);
- strcpy(p, "eraseblock_size");
- leb_size = get_num_from_file(path, MAX_SANE_ERASEBLOCK);
- size_bytes = leb_avail * (unsigned long long)leb_size;
- //if (size_bytes <= 0)
- // bb_error_msg_and_die("%s invalid maximum size calculated", "UBI");
- } else
- if (!(opts & OPTION_s))
- bb_simple_error_msg_and_die("size not specified");
- if (!(opts & OPTION_N))
- bb_simple_error_msg_and_die("name not specified");
- /* the structure is memset(0) above */
- mkvol_req.vol_id = vol_id;
- mkvol_req.vol_type = UBI_DYNAMIC_VOLUME;
- if ((opts & OPTION_t) && type[0] == 's')
- mkvol_req.vol_type = UBI_STATIC_VOLUME;
- mkvol_req.alignment = alignment;
- mkvol_req.bytes = size_bytes; /* signed int64_t */
- /* strnlen avoids overflow of 16-bit field (paranoia) */
- mkvol_req.name_len = strnlen(vol_name, UBI_MAX_VOLUME_NAME+1);
- if (mkvol_req.name_len > UBI_MAX_VOLUME_NAME)
- bb_error_msg_and_die("volume name too long: '%s'", vol_name);
- /* this is safe: .name[] is UBI_MAX_VOLUME_NAME+1 bytes */
- strcpy(mkvol_req.name, vol_name);
- xioctl(fd, UBI_IOCMKVOL, &mkvol_req);
- } else
- //usage:#define ubirmvol_trivial_usage
- //usage: "-n VOLID | -N VOLNAME UBI_DEVICE"
- //usage:#define ubirmvol_full_usage "\n\n"
- //usage: "Remove UBI volume\n"
- //usage: "\n -n VOLID Volume ID"
- //usage: "\n -N VOLNAME Volume name"
- if (do_rmvol) {
- if (!(opts & (OPTION_n|OPTION_N)))
- bb_simple_error_msg_and_die("volume id not specified");
- if (opts & OPTION_N) {
- unsigned num = ubi_devnum_from_devname(ubi_ctrl);
- vol_id = ubi_get_volid_by_name(num, vol_name);
- }
- if (sizeof(vol_id) != 4) {
- /* kernel expects int32_t* in this ioctl */
- int32_t t = vol_id;
- xioctl(fd, UBI_IOCRMVOL, &t);
- } else {
- xioctl(fd, UBI_IOCRMVOL, &vol_id);
- }
- } else
- //usage:#define ubirsvol_trivial_usage
- //usage: "-n VOLID -s SIZE UBI_DEVICE"
- //usage:#define ubirsvol_full_usage "\n\n"
- //usage: "Resize UBI volume\n"
- //usage: "\n -n VOLID Volume ID"
- //usage: "\n -s SIZE Size in bytes"
- if (do_rsvol) {
- if (!(opts & OPTION_s))
- bb_simple_error_msg_and_die("size not specified");
- if (!(opts & OPTION_n))
- bb_simple_error_msg_and_die("volume id not specified");
- rsvol_req.bytes = size_bytes; /* signed int64_t */
- rsvol_req.vol_id = vol_id;
- xioctl(fd, UBI_IOCRSVOL, &rsvol_req);
- } else
- //usage:#define ubiupdatevol_trivial_usage
- //usage: "-t UBI_DEVICE | [-s SIZE] UBI_DEVICE IMG_FILE"
- //usage:#define ubiupdatevol_full_usage "\n\n"
- //usage: "Update UBI volume\n"
- //usage: "\n -t Truncate to zero size"
- //usage: "\n -s SIZE Size in bytes to resize to"
- if (do_update) {
- int64_t bytes64;
- if (opts & OPTION_t) {
- /* truncate the volume by starting an update for size 0 */
- bytes64 = 0;
- /* this ioctl expects int64_t* parameter */
- xioctl(fd, UBI_IOCVOLUP, &bytes64);
- }
- else {
- unsigned ubinum, volnum;
- unsigned leb_size;
- char *buf;
- /* Assume that device is in normal format. */
- /* Removes need for scanning sysfs tree as full libubi does. */
- if (sscanf(ubi_ctrl, "/dev/ubi%u_%u", &ubinum, &volnum) != 2)
- bb_error_msg_and_die("UBI device name '%s' is not /dev/ubiN_M", ubi_ctrl);
- sprintf(path_sys_class_ubi_ubi, "%u_%u/usable_eb_size", ubinum, volnum);
- leb_size = get_num_from_file(path, MAX_SANE_ERASEBLOCK);
- if (!*argv)
- bb_show_usage();
- if (NOT_LONE_DASH(*argv)) /* mtd-utils supports "-" as stdin */
- xmove_fd(xopen(*argv, O_RDONLY), STDIN_FILENO);
- if (!(opts & OPTION_s)) {
- struct stat st;
- xfstat(STDIN_FILENO, &st, *argv);
- size_bytes = st.st_size;
- }
- bytes64 = size_bytes;
- /* this ioctl expects signed int64_t* parameter */
- xioctl(fd, UBI_IOCVOLUP, &bytes64);
- /* can't use bb_copyfd_exact_size(): copy in blocks of exactly leb_size */
- buf = xmalloc(leb_size);
- while (size_bytes != 0) {
- int len = full_read(STDIN_FILENO, buf, leb_size);
- if (len <= 0) {
- if (len < 0)
- bb_perror_msg_and_die("read error from '%s'", *argv);
- break;
- }
- if ((unsigned)len > size_bytes) {
- /* for this case: "ubiupdatevol -s 1024000 $UBIDEV /dev/urandom" */
- len = size_bytes;
- }
- xwrite(fd, buf, len);
- size_bytes -= len;
- }
- if (ENABLE_FEATURE_CLEAN_UP)
- free(buf);
- }
- }
- if (ENABLE_FEATURE_CLEAN_UP)
- close(fd);
- return EXIT_SUCCESS;
- }
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