diff options
Diffstat (limited to 'miscutils/ubi_tools.c')
| -rw-r--r-- | miscutils/ubi_tools.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/miscutils/ubi_tools.c b/miscutils/ubi_tools.c new file mode 100644 index 0000000..fc7f38c --- /dev/null +++ b/miscutils/ubi_tools.c @@ -0,0 +1,278 @@ +/* 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" +#include <mtd/ubi-user.h> + +#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) + +#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') + +//usage:#define ubiattach_trivial_usage +//usage: "-m MTD_NUM [-d UBI_NUM] UBI_CTRL_DEV" +//usage:#define ubiattach_full_usage "\n\n" +//usage: "Attach MTD device to UBI\n" +//usage: "\nOptions:" +//usage: "\n -m MTD_NUM MTD device number to attach" +//usage: "\n -d UBI_NUM UBI device number to assign" +//usage: +//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: "\nOptions:" +//usage: "\n -d UBI_NUM UBI device number" +//usage: +//usage:#define ubimkvol_trivial_usage +//usage: "UBI_DEVICE -N NAME -s SIZE" +//usage:#define ubimkvol_full_usage "\n\n" +//usage: "Create UBI volume\n" +//usage: "\nOptions:" +//usage: "\n -a ALIGNMENT Volume alignment (default 1)" +//usage: "\n -n VOLID Volume ID, if not specified, it" +//usage: "\n will be assigned automatically" +//usage: "\n -N NAME Volume name" +//usage: "\n -s SIZE Size in bytes" +//usage: "\n -t TYPE Volume type (static|dynamic)" +//usage: +//usage:#define ubirmvol_trivial_usage +//usage: "UBI_DEVICE -n VOLID" +//usage:#define ubirmvol_full_usage "\n\n" +//usage: "Remove UBI volume\n" +//usage: "\nOptions:" +//usage: "\n -n VOLID Volume ID" +//usage: +//usage:#define ubirsvol_trivial_usage +//usage: "UBI_DEVICE -n VOLID -s SIZE" +//usage:#define ubirsvol_full_usage "\n\n" +//usage: "Resize UBI volume\n" +//usage: "\nOptions:" +//usage: "\n -n VOLID Volume ID to resize" +//usage: "\n -s SIZE Size in bytes" +//usage: +//usage:#define ubiupdatevol_trivial_usage +//usage: "UBI_DEVICE [IMG_FILE]" +//usage:#define ubiupdatevol_full_usage "\n\n" +//usage: "Update UBI volume\n" +//usage: "\nOptions:" +//usage: "\n -t Truncate UBI volume" +//usage: "\n -s SIZE Bytes in input (if reading stdin)" + + +int ubi_tools_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int ubi_tools_main(int argc UNUSED_PARAM, char **argv) +{ + unsigned opts; + char *ubi_ctrl; + //struct stat st; + int fd; + int mtd_num; + int dev_num = UBI_DEV_NUM_AUTO; + int vol_id = UBI_VOL_NUM_AUTO; + char *vol_name = NULL; + int size_bytes; + int alignment = 1; + char *type = NULL; + + opt_complementary = "-1:m+:d+:n+:s+:a+"; + opts = getopt32(argv, "m:d:n:N:s:a:t::", + &mtd_num, &dev_num, &vol_id, + &vol_name, &size_bytes, &alignment, &type + ); + ubi_ctrl = argv[optind]; + + 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); + + if (do_attach) { + struct ubi_attach_req req; + if (!(opts & OPTION_M)) + bb_error_msg_and_die("%s device not specified", "MTD"); + + memset(&req, 0, sizeof(req)); + req.mtd_num = mtd_num; + req.ubi_num = dev_num; + + xioctl(fd, UBI_IOCATT, &req); + } else + if (do_detach) { + if (!(opts & OPTION_D)) + bb_error_msg_and_die("%s device not specified", "UBI"); + + xioctl(fd, UBI_IOCDET, &dev_num); + } else + if (do_mkvol) { + struct ubi_mkvol_req req; + int vol_name_len; + if (!(opts & OPTION_s)) + bb_error_msg_and_die("%s size not specified", "UBI"); + if (!(opts & OPTION_N)) + bb_error_msg_and_die("%s name not specified", "UBI"); + vol_name_len = strlen(vol_name); + if (vol_name_len > UBI_MAX_VOLUME_NAME) + bb_error_msg_and_die("%s volume name too long", "UBI"); + + memset(&req, 0, sizeof(req)); + req.vol_id = vol_id; + if ((opts & OPTION_t) && type) { + if (type[0] == 's') + req.vol_type = UBI_STATIC_VOLUME; + else + req.vol_type = UBI_DYNAMIC_VOLUME; + } else { + req.vol_type = UBI_DYNAMIC_VOLUME; + } + req.alignment = alignment; + req.bytes = size_bytes; + strncpy(req.name, vol_name, UBI_MAX_VOLUME_NAME); + req.name_len = vol_name_len; + + xioctl(fd, UBI_IOCMKVOL, &req); + } else + if (do_rmvol) { + if (!(opts & OPTION_n)) + bb_error_msg_and_die("%s volume id not specified", "UBI"); + + xioctl(fd, UBI_IOCRMVOL, &vol_id); + } else + if (do_rsvol) { + struct ubi_rsvol_req req; + if (!(opts & OPTION_s)) + bb_error_msg_and_die("%s size not specified", "UBI"); + if (!(opts & OPTION_n)) + bb_error_msg_and_die("%s volume id not specified", "UBI"); + + memset(&req, 0, sizeof(req)); + req.bytes = size_bytes; + req.vol_id = vol_id; + + xioctl(fd, UBI_IOCRSVOL, &req); + } else + if (do_update) { + long long bytes; + + if (opts & OPTION_t) { + // truncate the volume by starting an update for size 0 + bytes = 0; + xioctl(fd, UBI_IOCVOLUP, &bytes); + } + else { + struct stat st; + char buf[sizeof("/sys/class/ubi/ubi%d_%d/usable_eb_size") + 2 * sizeof(int)*3]; + int input_fd; + unsigned ubinum, volnum; + unsigned leb_size; + ssize_t len; + char *input_data; + + // Make assumption that device not 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("%s volume node not in correct format", "UBI"); + + sprintf(buf, "/sys/class/ubi/ubi%u_%u/usable_eb_size", ubinum, volnum); + if (open_read_close(buf, buf, sizeof(buf)) <= 0) + bb_error_msg_and_die("%s could not get LEB size", "UBI"); + if (sscanf(buf, "%u", &leb_size) != 1) + bb_error_msg_and_die("%s could not get LEB size", "UBI"); + + if (opts & OPTION_s) { + input_fd = 0; + } else { + if (!argv[optind+1]) + bb_show_usage(); + xstat(argv[optind+1], &st); + size_bytes = st.st_size; + input_fd = xopen(argv[optind+1], O_RDONLY); + } + + bytes = size_bytes; + xioctl(fd, UBI_IOCVOLUP, &bytes); + + input_data = xmalloc(leb_size); + while ((len = full_read(input_fd, input_data, leb_size)) > 0) { + xwrite(fd, input_data, len); + } + if (len < 0) + bb_error_msg_and_die("%s volume update failed", "UBI"); + if (ENABLE_FEATURE_CLEAN_UP) + close(input_fd); + } + } + + if (ENABLE_FEATURE_CLEAN_UP) + close(fd); + + return EXIT_SUCCESS; +} |