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26#include "libbb.h"
27#include <mtd/mtd-user.h>
28
29#ifndef __packed
30# define __packed __attribute__((packed))
31#endif
32
33
34#define UBI_MAX_VOLUME_NAME 127
35#define UBI_MAX_VOLUMES 128
36
37
38
39
40#define UBI_IOC_MAGIC 'o'
41
42
43#define UBI_IOCRNVOL _IOW(UBI_IOC_MAGIC, 3, struct ubi_rnvol_req)
44
45
46#define UBI_MAX_RNVOL 32
47
48struct ubi_rnvol_req {
49 int32_t count;
50 int8_t padding1[12];
51 struct {
52 int32_t vol_id;
53 int16_t name_len;
54 int8_t padding2[2];
55 char name[UBI_MAX_VOLUME_NAME + 1];
56 } ents[UBI_MAX_RNVOL];
57} __packed;
58
59
60int ubirename_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
61int ubirename_main(int argc, char **argv)
62{
63 struct ubi_rnvol_req *rnvol;
64 const char *ubi_devname;
65 unsigned ubi_devnum;
66 unsigned n;
67
68
69 if ((argc & 1) || (argc >>= 1) < 2)
70 bb_show_usage();
71
72 rnvol = xzalloc(sizeof(*rnvol));
73 rnvol->count = --argc;
74 if (argc > ARRAY_SIZE(rnvol->ents))
75 bb_error_msg_and_die("too many renames requested");
76
77 ubi_devname = argv[1];
78 ubi_devnum = ubi_devnum_from_devname(ubi_devname);
79
80 n = 0;
81 argv += 2;
82 while (argv[0]) {
83 rnvol->ents[n].vol_id = ubi_get_volid_by_name(ubi_devnum, argv[0]);
84
85
86 rnvol->ents[n].name_len = strnlen(argv[1], sizeof(rnvol->ents[n].name));
87 if (rnvol->ents[n].name_len >= sizeof(rnvol->ents[n].name))
88 bb_error_msg_and_die("new name '%s' is too long", argv[1]);
89
90 strcpy(rnvol->ents[n].name, argv[1]);
91 n++;
92 argv += 2;
93 }
94
95 xioctl(xopen(ubi_devname, O_RDONLY), UBI_IOCRNVOL, rnvol);
96
97 return 0;
98}
99