1 /* ubirename - port of the ubirename from the mtd-utils package
3 * A utility to rename one UBI volume.
5 * 2016-03-01 Sven Eisenberg <sven.eisenberg@novero.com>
7 * Licensed under GPLv2, see file LICENSE in this source tree.
9 //config:config UBIRENAME
10 //config: bool "ubirename"
12 //config: select PLATFORM_LINUX
14 //config: Utility to rename UBI volumes
16 //applet:IF_UBIRENAME(APPLET(ubirename, BB_DIR_USR_SBIN, BB_SUID_DROP))
18 //kbuild:lib-$(CONFIG_UBIRENAME) += ubirename.o
20 //usage:#define ubirename_trivial_usage
21 //usage: "UBI_DEVICE OLD_VOLNAME NEW_VOLNAME [OLD2 NEW2]..."
22 //usage:#define ubirename_full_usage "\n\n"
23 //usage: "Rename UBI volumes on UBI_DEVICE"
26 #include <mtd/mtd-user.h>
29 # define __packed __attribute__((packed))
33 #define UBI_MAX_VOLUME_NAME 127
34 #define UBI_MAX_VOLUMES 128
38 /* ioctl commands of UBI character devices */
39 #define UBI_IOC_MAGIC 'o'
42 #define UBI_IOCRNVOL _IOW(UBI_IOC_MAGIC, 3, struct ubi_rnvol_req)
44 /* Maximum amount of UBI volumes that can be re-named at one go */
45 #define UBI_MAX_RNVOL 32
47 struct ubi_rnvol_req {
54 char name[UBI_MAX_VOLUME_NAME + 1];
55 } ents[UBI_MAX_RNVOL];
59 int ubirename_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
60 int ubirename_main(int argc, char **argv)
62 struct ubi_rnvol_req *rnvol;
63 const char *ubi_devname;
67 /* argc can be 4, 6, 8, ... */
68 if ((argc & 1) || (argc >>= 1) < 2)
71 rnvol = xzalloc(sizeof(*rnvol));
72 rnvol->count = --argc;
73 if (argc > ARRAY_SIZE(rnvol->ents))
74 bb_error_msg_and_die("too many renames requested");
76 ubi_devname = argv[1];
77 ubi_devnum = ubi_devnum_from_devname(ubi_devname);
82 rnvol->ents[n].vol_id = get_volid_by_name(ubi_devnum, argv[0]);
83 rnvol->ents[n].name_len = strlen(argv[1]);
84 if (rnvol->ents[n].name_len >= sizeof(rnvol->ents[n].name))
85 bb_error_msg_and_die("new name '%s' is too long", argv[1]);
86 strcpy(rnvol->ents[n].name, argv[1]);
91 xioctl(xopen(ubi_devname, O_RDONLY), UBI_IOCRNVOL, rnvol);