| /* |
| * 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; |
| } |