1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) 2016 Denys Vlasenko
7 * Licensed under GPLv2, see file LICENSE in this source tree.
9 //kbuild:lib-y += ubi.o
14 #define UBI_MAX_VOLUME_NAME 127
15 #define UBI_MAX_VOLUMES 128
17 unsigned FAST_FUNC ubi_devnum_from_devname(const char *str)
21 if (sscanf(str, "/dev/ubi%u", &ubi_devnum) != 1)
22 bb_error_msg_and_die("not an UBI device: '%s'", str);
26 int FAST_FUNC ubi_get_volid_by_name(unsigned ubi_devnum, const char *vol_name)
30 for (i = 0; i < UBI_MAX_VOLUMES; i++) {
31 char buf[UBI_MAX_VOLUME_NAME + 1];
32 char fname[sizeof("/sys/class/ubi/ubi%u_%u/name") + 2 * sizeof(int)*3];
34 sprintf(fname, "/sys/class/ubi/ubi%u_%u/name", ubi_devnum, i);
35 if (open_read_close(fname, buf, sizeof(buf)) <= 0)
38 strchrnul(buf, '\n')[0] = '\0';
39 if (strcmp(vol_name, buf) == 0)
42 bb_error_msg_and_die("volume '%s' not found", vol_name);