/* Ported to busybox from mtd-utils. * * Licensed under GPLv2, see file LICENSE in this source tree. */ //config:config UBIATTACH //config: bool "ubiattach" //config: default y //config: select PLATFORM_LINUX //config: help //config: Attach MTD device to an UBI device. //config: //config:config UBIDETACH //config: bool "ubidetach" //config: default y //config: select PLATFORM_LINUX //config: help //config: Detach MTD device from an UBI device. //config: //config:config UBIMKVOL //config: bool "ubimkvol" //config: default y //config: select PLATFORM_LINUX //config: help //config: Create a UBI volume. //config: //config:config UBIRMVOL //config: bool "ubirmvol" //config: default y //config: select PLATFORM_LINUX //config: help //config: Delete a UBI volume. //config: //config:config UBIRSVOL //config: bool "ubirsvol" //config: default y //config: select PLATFORM_LINUX //config: help //config: Resize a UBI volume. //config: //config:config UBIUPDATEVOL //config: bool "ubiupdatevol" //config: default y //config: select PLATFORM_LINUX //config: help //config: Update a UBI volume. //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)) //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 do_attach (ENABLE_UBIATTACH && applet_name[3] == 'a') #define do_detach (ENABLE_UBIDETACH && applet_name[3] == 'd') #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') #define do_update (ENABLE_UBIUPDATEVOL && applet_name[3] == 'u') static unsigned get_num_from_file(const char *path, unsigned max, const char *errmsg) { char buf[sizeof(long long)*3]; unsigned long long num; if (open_read_close(path, buf, sizeof(buf)) < 0) bb_perror_msg_and_die(errmsg, path); /* It can be \n terminated, xatoull won't work well */ if (sscanf(buf, "%llu", &num) != 1 || num > max) bb_error_msg_and_die(errmsg, 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[] = { { "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) { opt_complementary = "-1"; opts = getopt32(argv, "md:+n:+N:s:a:+t:O:+", &dev_num, &vol_id, &vol_name, &size_bytes_str, &alignment, &type, &vid_hdr_offset ); } else if (do_update) { opt_complementary = "-1"; opts = getopt32(argv, "s:at", &size_bytes_str); opts *= OPTION_s; } else { opt_complementary = "-1"; opts = getopt32(argv, "m:+d:+n:+N:s:a:+t:", &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, "Can't get available eraseblocks from '%s'"); strcpy(p, "eraseblock_size"); leb_size = get_num_from_file(path, MAX_SANE_ERASEBLOCK, "Can't get eraseblock size from '%s'"); 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_error_msg_and_die("size not specified"); if (!(opts & OPTION_N)) bb_error_msg_and_die("name not specified"); 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 */ strncpy(mkvol_req.name, vol_name, UBI_MAX_VOLUME_NAME); mkvol_req.name_len = strlen(vol_name); if (mkvol_req.name_len > UBI_MAX_VOLUME_NAME) bb_error_msg_and_die("volume name too long: '%s'", 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_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_error_msg_and_die("size not specified"); if (!(opts & OPTION_n)) bb_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 | [-s SIZE] IMG_FILE] UBI_DEVICE" //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 { struct stat st; unsigned ubinum, volnum; unsigned leb_size; ssize_t len; char *input_data; /* 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("wrong format of UBI device name"); sprintf(path_sys_class_ubi_ubi, "%u_%u/usable_eb_size", ubinum, volnum); leb_size = get_num_from_file(path, MAX_SANE_ERASEBLOCK, "Can't get usable eraseblock size from '%s'"); if (!(opts & OPTION_s)) { if (!*argv) bb_show_usage(); xmove_fd(xopen(*argv, O_RDONLY), STDIN_FILENO); 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); input_data = xmalloc(leb_size); while ((len = full_read(STDIN_FILENO, input_data, leb_size)) > 0) { xwrite(fd, input_data, len); } if (len < 0) bb_perror_msg_and_die("UBI volume update failed"); } } if (ENABLE_FEATURE_CLEAN_UP) close(fd); return EXIT_SUCCESS; }