1 /* Ported to busybox from mtd-utils.
3 * Licensed under GPLv2, see file LICENSE in this source tree.
6 //config:config UBIATTACH
7 //config: bool "ubiattach"
9 //config: select PLATFORM_LINUX
11 //config: Attach MTD device to an UBI device.
13 //config:config UBIDETACH
14 //config: bool "ubidetach"
16 //config: select PLATFORM_LINUX
18 //config: Detach MTD device from an UBI device.
20 //config:config UBIMKVOL
21 //config: bool "ubimkvol"
23 //config: select PLATFORM_LINUX
25 //config: Create a UBI volume.
27 //config:config UBIRMVOL
28 //config: bool "ubirmvol"
30 //config: select PLATFORM_LINUX
32 //config: Delete a UBI volume.
34 //config:config UBIRSVOL
35 //config: bool "ubirsvol"
37 //config: select PLATFORM_LINUX
39 //config: Resize a UBI volume.
41 //config:config UBIUPDATEVOL
42 //config: bool "ubiupdatevol"
44 //config: select PLATFORM_LINUX
46 //config: Update a UBI volume.
48 //applet:IF_UBIATTACH(APPLET_ODDNAME(ubiattach, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubiattach))
49 //applet:IF_UBIDETACH(APPLET_ODDNAME(ubidetach, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubidetach))
50 //applet:IF_UBIMKVOL(APPLET_ODDNAME(ubimkvol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubimkvol))
51 //applet:IF_UBIRMVOL(APPLET_ODDNAME(ubirmvol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubirmvol))
52 //applet:IF_UBIRSVOL(APPLET_ODDNAME(ubirsvol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubirsvol))
53 //applet:IF_UBIUPDATEVOL(APPLET_ODDNAME(ubiupdatevol, ubi_tools, BB_DIR_USR_SBIN, BB_SUID_DROP, ubiupdatevol))
55 //kbuild:lib-$(CONFIG_UBIATTACH) += ubi_tools.o
56 //kbuild:lib-$(CONFIG_UBIDETACH) += ubi_tools.o
57 //kbuild:lib-$(CONFIG_UBIMKVOL) += ubi_tools.o
58 //kbuild:lib-$(CONFIG_UBIRMVOL) += ubi_tools.o
59 //kbuild:lib-$(CONFIG_UBIRSVOL) += ubi_tools.o
60 //kbuild:lib-$(CONFIG_UBIUPDATEVOL) += ubi_tools.o
63 /* Some versions of kernel have broken headers, need this hack */
65 # define __packed __attribute__((packed))
67 #include <mtd/ubi-user.h>
69 #define do_attach (ENABLE_UBIATTACH && applet_name[3] == 'a')
70 #define do_detach (ENABLE_UBIDETACH && applet_name[3] == 'd')
71 #define do_mkvol (ENABLE_UBIMKVOL && applet_name[3] == 'm')
72 #define do_rmvol (ENABLE_UBIRMVOL && applet_name[4] == 'm')
73 #define do_rsvol (ENABLE_UBIRSVOL && applet_name[4] == 's')
74 #define do_update (ENABLE_UBIUPDATEVOL && applet_name[3] == 'u')
76 static unsigned get_num_from_file(const char *path
, unsigned max
, const char *errmsg
)
78 char buf
[sizeof(long long)*3];
79 unsigned long long num
;
81 if (open_read_close(path
, buf
, sizeof(buf
)) < 0)
82 bb_perror_msg_and_die(errmsg
, path
);
83 /* It can be \n terminated, xatoull won't work well */
84 if (sscanf(buf
, "%llu", &num
) != 1 || num
> max
)
85 bb_error_msg_and_die(errmsg
, path
);
89 /* To prevent malloc(1G) accidents */
90 #define MAX_SANE_ERASEBLOCK (16*1024*1024)
92 int ubi_tools_main(int argc
, char **argv
) MAIN_EXTERNALLY_VISIBLE
;
93 int ubi_tools_main(int argc UNUSED_PARAM
, char **argv
)
95 static const struct suffix_mult size_suffixes
[] = {
98 { "GiB", 1024*1024*1024 },
106 int dev_num
= UBI_DEV_NUM_AUTO
;
107 int vol_id
= UBI_VOL_NUM_AUTO
;
109 unsigned long long size_bytes
= size_bytes
; /* for compiler */
110 char *size_bytes_str
;
114 struct ubi_attach_req attach_req
;
115 struct ubi_mkvol_req mkvol_req
;
116 struct ubi_rsvol_req rsvol_req
;
118 #define attach_req req_structs.attach_req
119 #define mkvol_req req_structs.mkvol_req
120 #define rsvol_req req_structs.rsvol_req
121 char path
[sizeof("/sys/class/ubi/ubi%d_%d/usable_eb_size")
122 + 2 * sizeof(int)*3 + /*just in case:*/ 16];
123 #define path_sys_class_ubi_ubi (path + sizeof("/sys/class/ubi/ubi")-1)
125 strcpy(path
, "/sys/class/ubi/ubi");
126 memset(&req_structs
, 0, sizeof(req_structs
));
128 #define OPTION_m (1 << 0)
129 #define OPTION_d (1 << 1)
130 #define OPTION_n (1 << 2)
131 #define OPTION_N (1 << 3)
132 #define OPTION_s (1 << 4)
133 #define OPTION_a (1 << 5)
134 #define OPTION_t (1 << 6)
136 opt_complementary
= "-1:d+:n+:a+";
137 opts
= getopt32(argv
, "md:n:N:s:a:t:",
139 &vol_name
, &size_bytes_str
, &alignment
, &type
143 opt_complementary
= "-1";
144 opts
= getopt32(argv
, "s:at", &size_bytes_str
);
147 opt_complementary
= "-1:m+:d+:n+:a+";
148 opts
= getopt32(argv
, "m:d:n:N:s:a:t:",
149 &mtd_num
, &dev_num
, &vol_id
,
150 &vol_name
, &size_bytes_str
, &alignment
, &type
155 size_bytes
= xatoull_sfx(size_bytes_str
, size_suffixes
);
159 fd
= xopen(ubi_ctrl
, O_RDWR
);
160 //xfstat(fd, &st, ubi_ctrl);
161 //if (!S_ISCHR(st.st_mode))
162 // bb_error_msg_and_die("%s: not a char device", ubi_ctrl);
164 //usage:#define ubiattach_trivial_usage
165 //usage: "-m MTD_NUM [-d UBI_NUM] UBI_CTRL_DEV"
166 //usage:#define ubiattach_full_usage "\n\n"
167 //usage: "Attach MTD device to UBI\n"
168 //usage: "\n -m MTD_NUM MTD device number to attach"
169 //usage: "\n -d UBI_NUM UBI device number to assign"
171 if (!(opts
& OPTION_m
))
172 bb_error_msg_and_die("%s device not specified", "MTD");
174 attach_req
.mtd_num
= mtd_num
;
175 attach_req
.ubi_num
= dev_num
;
177 xioctl(fd
, UBI_IOCATT
, &attach_req
);
180 //usage:#define ubidetach_trivial_usage
181 //usage: "-d UBI_NUM UBI_CTRL_DEV"
182 //usage:#define ubidetach_full_usage "\n\n"
183 //usage: "Detach MTD device from UBI\n"
184 //usage: "\n -d UBI_NUM UBI device number"
186 if (!(opts
& OPTION_d
))
187 bb_error_msg_and_die("%s device not specified", "UBI");
189 /* FIXME? kernel expects int32_t* here: */
190 xioctl(fd
, UBI_IOCDET
, &dev_num
);
193 //usage:#define ubimkvol_trivial_usage
194 //usage: "UBI_DEVICE -N NAME [-s SIZE | -m]"
195 //usage:#define ubimkvol_full_usage "\n\n"
196 //usage: "Create UBI volume\n"
197 //usage: "\n -a ALIGNMENT Volume alignment (default 1)"
198 //usage: "\n -m Set volume size to maximum available"
199 //usage: "\n -n VOLID Volume ID. If not specified,"
200 //usage: "\n assigned automatically"
201 //usage: "\n -N NAME Volume name"
202 //usage: "\n -s SIZE Size in bytes"
203 //usage: "\n -t TYPE Volume type (static|dynamic)"
205 if (opts
& OPTION_m
) {
211 if (sscanf(ubi_ctrl
, "/dev/ubi%u", &num
) != 1)
212 bb_error_msg_and_die("wrong format of UBI device name");
214 p
= path_sys_class_ubi_ubi
+ sprintf(path_sys_class_ubi_ubi
, "%u/", num
);
216 strcpy(p
, "avail_eraseblocks");
217 leb_avail
= get_num_from_file(path
, UINT_MAX
, "Can't get available eraseblocks from '%s'");
219 strcpy(p
, "eraseblock_size");
220 leb_size
= get_num_from_file(path
, MAX_SANE_ERASEBLOCK
, "Can't get eraseblock size from '%s'");
222 size_bytes
= leb_avail
* (unsigned long long)leb_size
;
223 //if (size_bytes <= 0)
224 // bb_error_msg_and_die("%s invalid maximum size calculated", "UBI");
226 if (!(opts
& OPTION_s
))
227 bb_error_msg_and_die("size not specified");
229 if (!(opts
& OPTION_N
))
230 bb_error_msg_and_die("name not specified");
232 mkvol_req
.vol_id
= vol_id
;
233 mkvol_req
.vol_type
= UBI_DYNAMIC_VOLUME
;
234 if ((opts
& OPTION_t
) && type
[0] == 's')
235 mkvol_req
.vol_type
= UBI_STATIC_VOLUME
;
236 mkvol_req
.alignment
= alignment
;
237 mkvol_req
.bytes
= size_bytes
; /* signed int64_t */
238 strncpy(mkvol_req
.name
, vol_name
, UBI_MAX_VOLUME_NAME
);
239 mkvol_req
.name_len
= strlen(vol_name
);
240 if (mkvol_req
.name_len
> UBI_MAX_VOLUME_NAME
)
241 bb_error_msg_and_die("volume name too long: '%s'", vol_name
);
243 xioctl(fd
, UBI_IOCMKVOL
, &mkvol_req
);
246 //usage:#define ubirmvol_trivial_usage
247 //usage: "UBI_DEVICE -n VOLID"
248 //usage:#define ubirmvol_full_usage "\n\n"
249 //usage: "Remove UBI volume\n"
250 //usage: "\n -n VOLID Volume ID"
252 if (!(opts
& OPTION_n
))
253 bb_error_msg_and_die("volume id not specified");
255 /* FIXME? kernel expects int32_t* here: */
256 xioctl(fd
, UBI_IOCRMVOL
, &vol_id
);
259 //usage:#define ubirsvol_trivial_usage
260 //usage: "UBI_DEVICE -n VOLID -s SIZE"
261 //usage:#define ubirsvol_full_usage "\n\n"
262 //usage: "Resize UBI volume\n"
263 //usage: "\n -n VOLID Volume ID"
264 //usage: "\n -s SIZE Size in bytes"
266 if (!(opts
& OPTION_s
))
267 bb_error_msg_and_die("size not specified");
268 if (!(opts
& OPTION_n
))
269 bb_error_msg_and_die("volume id not specified");
271 rsvol_req
.bytes
= size_bytes
; /* signed int64_t */
272 rsvol_req
.vol_id
= vol_id
;
274 xioctl(fd
, UBI_IOCRSVOL
, &rsvol_req
);
277 //usage:#define ubiupdatevol_trivial_usage
278 //usage: "UBI_DEVICE [-t | [-s SIZE] IMG_FILE]"
279 //usage:#define ubiupdatevol_full_usage "\n\n"
280 //usage: "Update UBI volume\n"
281 //usage: "\n -t Truncate to zero size"
282 //usage: "\n -s SIZE Size in bytes to resize to"
286 if (opts
& OPTION_t
) {
287 /* truncate the volume by starting an update for size 0 */
289 /* this ioctl expects int64_t* parameter */
290 xioctl(fd
, UBI_IOCVOLUP
, &bytes64
);
294 unsigned ubinum
, volnum
;
299 /* Assume that device is in normal format. */
300 /* Removes need for scanning sysfs tree as full libubi does. */
301 if (sscanf(ubi_ctrl
, "/dev/ubi%u_%u", &ubinum
, &volnum
) != 2)
302 bb_error_msg_and_die("wrong format of UBI device name");
304 sprintf(path_sys_class_ubi_ubi
, "%u_%u/usable_eb_size", ubinum
, volnum
);
305 leb_size
= get_num_from_file(path
, MAX_SANE_ERASEBLOCK
, "Can't get usable eraseblock size from '%s'");
307 if (!(opts
& OPTION_s
)) {
310 xmove_fd(xopen(*argv
, O_RDONLY
), STDIN_FILENO
);
311 xfstat(STDIN_FILENO
, &st
, *argv
);
312 size_bytes
= st
.st_size
;
315 bytes64
= size_bytes
;
316 /* this ioctl expects signed int64_t* parameter */
317 xioctl(fd
, UBI_IOCVOLUP
, &bytes64
);
319 input_data
= xmalloc(leb_size
);
320 while ((len
= full_read(STDIN_FILENO
, input_data
, leb_size
)) > 0) {
321 xwrite(fd
, input_data
, len
);
324 bb_perror_msg_and_die("UBI volume update failed");
328 if (ENABLE_FEATURE_CLEAN_UP
)