diff options
| -rw-r--r-- | miscutils/ubi_tools.c | 51 |
1 files changed, 45 insertions, 6 deletions
diff --git a/miscutils/ubi_tools.c b/miscutils/ubi_tools.c index dd99a44..6f20f30 100644 --- a/miscutils/ubi_tools.c +++ b/miscutils/ubi_tools.c @@ -95,10 +95,11 @@ //usage: "\n -d UBI_NUM UBI device number" //usage: //usage:#define ubimkvol_trivial_usage -//usage: "UBI_DEVICE -N NAME -s SIZE" +//usage: "UBI_DEVICE -N NAME [-s SIZE | -m]" //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, it" //usage: "\n will be assigned automatically" //usage: "\n -N NAME Volume name" @@ -141,11 +142,19 @@ int ubi_tools_main(int argc UNUSED_PARAM, char **argv) 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 - ); + if (do_mkvol) { + opt_complementary = "-1:d+:n+:s+:a+"; + opts = getopt32(argv, "md:n:N:s:a:t::", + &dev_num, &vol_id, + &vol_name, &size_bytes, &alignment, &type + ); + } else { + 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); @@ -173,6 +182,36 @@ int ubi_tools_main(int argc UNUSED_PARAM, char **argv) if (do_mkvol) { struct ubi_mkvol_req req; int vol_name_len; + if (opts & OPTION_M) { + unsigned leb_avail; + unsigned leb_size; + unsigned num; + char path[sizeof("/sys/class/ubi/ubi%d/avail_eraseblocks") + sizeof(int)*3]; + char *p; + char buf[20]; + + if (strncmp(ubi_ctrl, "/dev/ubi", 8) != 0) + bb_error_msg_and_die("%s device node not in correct format", "UBI"); + num = xstrtou(ubi_ctrl+8, 10); + p = path + sprintf(path, "/sys/class/ubi/ubi%d/", num); + + strcpy(p, "avail_eraseblocks"); + if ((num = open_read_close(path, buf, sizeof(buf))) <= 1) + bb_error_msg_and_die("%s could not get LEB available", "UBI"); + buf[num-1] = '\0'; // trim trailing newline + leb_avail = xstrtou(buf, 10); + + strcpy(p, "eraseblock_size"); + if ((num = open_read_close(path, buf, sizeof(buf))) <= 0) + bb_error_msg_and_die("%s could not get LEB size", "UBI"); + buf[num-1] = '\0'; // trim trailing newline + leb_size = xstrtou(buf, 10); + + size_bytes = leb_avail * 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("%s size not specified", "UBI"); if (!(opts & OPTION_N)) |