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ubimkvol: add -m option to create volume of maximum size

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Signed-off-by: Paul B. Henson <henson@acm.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Paul B. Henson 2013-06-02 17:48:05 -07:00 committed by Denys Vlasenko
parent 173aa78bcf
commit f86404f773
1 changed files with 45 additions and 6 deletions
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51
miscutils/ubi_tools.c
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@ -95,10 +95,11 @@
//usage: "\n -d UBI_NUM UBI device number" //usage: "\n -d UBI_NUM UBI device number"
//usage: //usage:
//usage:#define ubimkvol_trivial_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:#define ubimkvol_full_usage "\n\n"
//usage: "Create UBI volume\n" //usage: "Create UBI volume\n"
//usage: "\n -a ALIGNMENT Volume alignment (default 1)" //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 -n VOLID Volume ID, if not specified, it"
//usage: "\n will be assigned automatically" //usage: "\n will be assigned automatically"
//usage: "\n -N NAME Volume name" //usage: "\n -N NAME Volume name"
@ -141,11 +142,19 @@ int ubi_tools_main(int argc UNUSED_PARAM, char **argv)
int alignment = 1; int alignment = 1;
char *type = NULL; char *type = NULL;
opt_complementary = "-1:m+:d+:n+:s+:a+"; if (do_mkvol) {
opts = getopt32(argv, "m:d:n:N:s:a:t::", opt_complementary = "-1:d+:n+:s+:a+";
&mtd_num, &dev_num, &vol_id, opts = getopt32(argv, "md:n:N:s:a:t::",
&vol_name, &size_bytes, &alignment, &type &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]; ubi_ctrl = argv[optind];
fd = xopen(ubi_ctrl, O_RDWR); fd = xopen(ubi_ctrl, O_RDWR);
@ -173,6 +182,36 @@ int ubi_tools_main(int argc UNUSED_PARAM, char **argv)
if (do_mkvol) { if (do_mkvol) {
struct ubi_mkvol_req req; struct ubi_mkvol_req req;
int vol_name_len; 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)) if (!(opts & OPTION_s))
bb_error_msg_and_die("%s size not specified", "UBI"); bb_error_msg_and_die("%s size not specified", "UBI");
if (!(opts & OPTION_N)) if (!(opts & OPTION_N))