int fallocate_main(int argc UNUSED_PARAM, char **argv)
{
const char *str_l;
const char *str_o = "0";
off_t ofs, len;
unsigned opts;
int fd;
/* exactly one non-option arg */
opt_complementary = "=1";
opts = getopt32(argv, "l:o:", &str_l, &str_o);
if (!(opts & 1))
bb_show_usage();
ofs = xatoull_sfx(str_o, kmg_i_suffixes);
len = xatoull_sfx(str_l, kmg_i_suffixes);
argv += optind;
fd = xopen3(*argv, O_RDWR | O_CREAT, 0666);
/* posix_fallocate has unusual method of returning error */
/* maybe use Linux-specific fallocate(int fd, int mode, off_t offset, off_t len) instead? */
if ((errno = posix_fallocate(fd, ofs, len)) != 0)
bb_perror_msg_and_die("fallocate '%s'", *argv);
/* util-linux also performs fsync(fd); */
return EXIT_SUCCESS;
}
int blkdiscard_main(int argc UNUSED_PARAM, char **argv)
{
unsigned opts;
const char *offset_str = "0";
const char *length_str;
uint64_t offset; /* Leaving these two variables out does not */
uint64_t length; /* shrink code size and hampers readability. */
uint64_t range[2];
// struct stat st;
int fd;
enum {
OPT_OFFSET = (1 << 0),
OPT_LENGTH = (1 << 1),
OPT_SECURE = (1 << 2),
};
opt_complementary = "=1";
opts = getopt32(argv, "o:l:s", &offset_str, &length_str);
argv += optind;
fd = xopen(argv[0], O_RDWR|O_EXCL);
//Why bother, BLK[SEC]DISCARD will fail on non-blockdevs anyway?
// xfstat(fd, &st);
// if (!S_ISBLK(st.st_mode))
// bb_error_msg_and_die("%s: not a block device", argv[0]);
offset = xatoull_sfx(offset_str, kMG_suffixes);
if (opts & OPT_LENGTH)
length = xatoull_sfx(length_str, kMG_suffixes);
else {
xioctl(fd, BLKGETSIZE64, &length);
length -= offset;
}
range[0] = offset;
range[1] = length;
ioctl_or_perror_and_die(fd,
(opts & OPT_SECURE) ? BLKSECDISCARD : BLKDISCARD,
&range,
"%s: %s failed",
argv[0],
(opts & OPT_SECURE) ? "BLKSECDISCARD" : "BLKDISCARD"
);
if (ENABLE_FEATURE_CLEAN_UP)
close(fd);
return EXIT_SUCCESS;
}
int split_main(int argc UNUSED_PARAM, char **argv)
{
unsigned suffix_len = 2;
char *pfx;
char *count_p;
const char *sfx;
off_t cnt = 1000;
off_t remaining = 0;
unsigned opt;
ssize_t bytes_read, to_write;
char *src;
opt_complementary = "?2:a+"; /* max 2 args; -a N */
opt = getopt32(argv, "l:b:a:", &count_p, &count_p, &suffix_len);
if (opt & SPLIT_OPT_l)
cnt = XATOOFF(count_p);
if (opt & SPLIT_OPT_b) // FIXME: also needs XATOOFF
cnt = xatoull_sfx(count_p,
IF_FEATURE_SPLIT_FANCY(split_suffixes)
IF_NOT_FEATURE_SPLIT_FANCY(km_suffixes)
);
sfx = "x";
argv += optind;
if (argv[0]) {
int fd;
if (argv[1])
sfx = argv[1];
fd = xopen_stdin(argv[0]);
xmove_fd(fd, STDIN_FILENO);
} else {
argv[0] = (char *) bb_msg_standard_input;
}
if (NAME_MAX < strlen(sfx) + suffix_len)
bb_error_msg_and_die("suffix too long");
{
char *char_p = xzalloc(suffix_len + 1);
memset(char_p, 'a', suffix_len);
pfx = xasprintf("%s%s", sfx, char_p);
if (ENABLE_FEATURE_CLEAN_UP)
free(char_p);
}
while (1) {
bytes_read = safe_read(STDIN_FILENO, read_buffer, READ_BUFFER_SIZE);
if (!bytes_read)
break;
if (bytes_read < 0)
bb_simple_perror_msg_and_die(argv[0]);
src = read_buffer;
do {
if (!remaining) {
if (!pfx)
bb_error_msg_and_die("suffixes exhausted");
xmove_fd(xopen(pfx, O_WRONLY | O_CREAT | O_TRUNC), 1);
pfx = next_file(pfx, suffix_len);
remaining = cnt;
}
if (opt & SPLIT_OPT_b) {
/* split by bytes */
to_write = (bytes_read < remaining) ? bytes_read : remaining;
remaining -= to_write;
} else {
/* split by lines */
/* can be sped up by using _memrchr_
* and writing many lines at once... */
char *end = memchr(src, '\n', bytes_read);
if (end) {
--remaining;
to_write = end - src + 1;
} else {
to_write = bytes_read;
}
}
xwrite(STDOUT_FILENO, src, to_write);
bytes_read -= to_write;
src += to_write;
} while (bytes_read);
}
return EXIT_SUCCESS;
}
int ubi_tools_main(int argc UNUSED_PARAM, char **argv)
{
static const struct suffix_mult size_suffixes[] = {
{ "KiB", 1024 },
{ "MiB", 1024*1024 },
{ "GiB", 1024*1024*1024 },
{ "", 0 }
};
unsigned opts;
char *ubi_ctrl;
int fd;
int mtd_num;
int dev_num = UBI_DEV_NUM_AUTO;
int vol_id = UBI_VOL_NUM_AUTO;
char *vol_name;
unsigned long long size_bytes = size_bytes; /* for compiler */
char *size_bytes_str;
int alignment = 1;
char *type;
union {
struct ubi_attach_req attach_req;
struct ubi_mkvol_req mkvol_req;
struct ubi_rsvol_req rsvol_req;
} req_structs;
#define attach_req req_structs.attach_req
#define mkvol_req req_structs.mkvol_req
#define rsvol_req req_structs.rsvol_req
char path[sizeof("/sys/class/ubi/ubi%d_%d/usable_eb_size")
+ 2 * sizeof(int)*3 + /*just in case:*/ 16];
#define path_sys_class_ubi_ubi (path + sizeof("/sys/class/ubi/ubi")-1)
strcpy(path, "/sys/class/ubi/ubi");
memset(&req_structs, 0, sizeof(req_structs));
if (do_mkvol) {
opt_complementary = "-1:d+:n+:a+";
opts = getopt32(argv, "md:n:N:s:a:t:",
&dev_num, &vol_id,
&vol_name, &size_bytes_str, &alignment, &type
);
} else {
opt_complementary = "-1:m+:d+:n+:a+";
opts = getopt32(argv, "m:d:n:N:s:a:t:",
&mtd_num, &dev_num, &vol_id,
&vol_name, &size_bytes_str, &alignment, &type
);
}
#define OPTION_m (1 << 0)
#define OPTION_d (1 << 1)
#define OPTION_n (1 << 2)
#define OPTION_N (1 << 3)
#define OPTION_s (1 << 4)
#define OPTION_a (1 << 5)
#define OPTION_t (1 << 6)
if (opts & OPTION_s)
size_bytes = xatoull_sfx(size_bytes_str, size_suffixes);
argv += optind;
ubi_ctrl = *argv++;
fd = xopen(ubi_ctrl, O_RDWR);
//xfstat(fd, &st, ubi_ctrl);
//if (!S_ISCHR(st.st_mode))
// bb_error_msg_and_die("%s: not a char device", ubi_ctrl);
//usage:#define ubiattach_trivial_usage
//usage: "-m MTD_NUM [-d UBI_NUM] UBI_CTRL_DEV"
//usage:#define ubiattach_full_usage "\n\n"
//usage: "Attach MTD device to UBI\n"
//usage: "\n -m MTD_NUM MTD device number to attach"
//usage: "\n -d UBI_NUM UBI device number to assign"
if (do_attach) {
if (!(opts & OPTION_m))
bb_error_msg_and_die("%s device not specified", "MTD");
attach_req.mtd_num = mtd_num;
attach_req.ubi_num = dev_num;
xioctl(fd, UBI_IOCATT, &attach_req);
} else
//usage:#define ubidetach_trivial_usage
//usage: "-d UBI_NUM UBI_CTRL_DEV"
//usage:#define ubidetach_full_usage "\n\n"
//usage: "Detach MTD device from UBI\n"
//usage: "\n -d UBI_NUM UBI device number"
if (do_detach) {
if (!(opts & OPTION_d))
bb_error_msg_and_die("%s device not specified", "UBI");
/* FIXME? kernel expects int32_t* here: */
xioctl(fd, UBI_IOCDET, &dev_num);
} else
//usage:#define ubimkvol_trivial_usage
//usage: "UBI_DEVICE -N NAME [-s SIZE | -m]"
//usage:#define ubimkvol_full_usage "\n\n"
//usage: "Create UBI volume\n"
//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,"
//usage: "\n assigned automatically"
//usage: "\n -N NAME Volume name"
//usage: "\n -s SIZE Size in bytes"
//usage: "\n -t TYPE Volume type (static|dynamic)"
if (do_mkvol) {
if (opts & OPTION_m) {
unsigned leb_avail;
unsigned leb_size;
unsigned num;
char *p;
if (sscanf(ubi_ctrl, "/dev/ubi%u", &num) != 1)
bb_error_msg_and_die("wrong format of UBI device name");
p = path_sys_class_ubi_ubi + sprintf(path_sys_class_ubi_ubi, "%u/", num);
strcpy(p, "avail_eraseblocks");
leb_avail = get_num_from_file(path, UINT_MAX, "Can't get available eraseblocks from '%s'");
strcpy(p, "eraseblock_size");
leb_size = get_num_from_file(path, MAX_SANE_ERASEBLOCK, "Can't get eraseblock size from '%s'");
size_bytes = leb_avail * (unsigned long long)leb_size;
//if (size_bytes <= 0)
// bb_error_msg_and_die("%s invalid maximum size calculated", "UBI");
} else
if (!(opts & OPTION_s))
bb_error_msg_and_die("size not specified");
if (!(opts & OPTION_N))
bb_error_msg_and_die("name not specified");
mkvol_req.vol_id = vol_id;
mkvol_req.vol_type = UBI_DYNAMIC_VOLUME;
if ((opts & OPTION_t) && type[0] == 's')
mkvol_req.vol_type = UBI_STATIC_VOLUME;
mkvol_req.alignment = alignment;
mkvol_req.bytes = size_bytes; /* signed int64_t */
strncpy(mkvol_req.name, vol_name, UBI_MAX_VOLUME_NAME);
mkvol_req.name_len = strlen(vol_name);
if (mkvol_req.name_len > UBI_MAX_VOLUME_NAME)
bb_error_msg_and_die("volume name too long: '%s'", vol_name);
xioctl(fd, UBI_IOCMKVOL, &mkvol_req);
} else
//usage:#define ubirmvol_trivial_usage
//usage: "UBI_DEVICE -n VOLID"
//usage:#define ubirmvol_full_usage "\n\n"
//usage: "Remove UBI volume\n"
//usage: "\n -n VOLID Volume ID"
if (do_rmvol) {
if (!(opts & OPTION_n))
bb_error_msg_and_die("volume id not specified");
/* FIXME? kernel expects int32_t* here: */
xioctl(fd, UBI_IOCRMVOL, &vol_id);
} else
//usage:#define ubirsvol_trivial_usage
//usage: "UBI_DEVICE -n VOLID -s SIZE"
//usage:#define ubirsvol_full_usage "\n\n"
//usage: "Resize UBI volume\n"
//usage: "\n -n VOLID Volume ID"
//usage: "\n -s SIZE Size in bytes"
if (do_rsvol) {
if (!(opts & OPTION_s))
bb_error_msg_and_die("size not specified");
if (!(opts & OPTION_n))
bb_error_msg_and_die("volume id not specified");
rsvol_req.bytes = size_bytes; /* signed int64_t */
rsvol_req.vol_id = vol_id;
xioctl(fd, UBI_IOCRSVOL, &rsvol_req);
} else
//usage:#define ubiupdatevol_trivial_usage
//usage: "UBI_DEVICE [-t | [-s SIZE] IMG_FILE]"
//usage:#define ubiupdatevol_full_usage "\n\n"
//usage: "Update UBI volume\n"
//usage: "\n -t Truncate to zero size"
//usage: "\n -s SIZE Size in bytes to resize to"
if (do_update) {
int64_t bytes64;
if (opts & OPTION_t) {
/* truncate the volume by starting an update for size 0 */
bytes64 = 0;
/* this ioctl expects int64_t* parameter */
xioctl(fd, UBI_IOCVOLUP, &bytes64);
}
else {
struct stat st;
unsigned ubinum, volnum;
unsigned leb_size;
ssize_t len;
char *input_data;
/* Assume that device is in normal format. */
/* Removes need for scanning sysfs tree as full libubi does. */
if (sscanf(ubi_ctrl, "/dev/ubi%u_%u", &ubinum, &volnum) != 2)
bb_error_msg_and_die("wrong format of UBI device name");
sprintf(path_sys_class_ubi_ubi, "%u_%u/usable_eb_size", ubinum, volnum);
leb_size = get_num_from_file(path, MAX_SANE_ERASEBLOCK, "Can't get usable eraseblock size from '%s'");
if (!(opts & OPTION_s)) {
if (!*argv)
bb_show_usage();
xstat(*argv, &st);
size_bytes = st.st_size;
xmove_fd(xopen(*argv, O_RDONLY), STDIN_FILENO);
}
bytes64 = size_bytes;
/* this ioctl expects signed int64_t* parameter */
xioctl(fd, UBI_IOCVOLUP, &bytes64);
input_data = xmalloc(leb_size);
while ((len = full_read(STDIN_FILENO, input_data, leb_size)) > 0) {
xwrite(fd, input_data, len);
}
if (len < 0)
bb_perror_msg_and_die("UBI volume update failed");
}
}
if (ENABLE_FEATURE_CLEAN_UP)
close(fd);
return EXIT_SUCCESS;
}
