Integer FATR eaf_write_(Integer *fd, double *offset, const void *buf,
Integer *bytes)
{
if (!valid_offset(*offset)) return EAF_ERR_NONINTEGER_OFFSET;
return (Integer) EAF_Write((int) *fd, (eaf_off_t) *offset, buf,
(size_t) *bytes);
}
static int find_size(int fd)
{
unsigned int high, low;
low = 0;
for (high = 1; high > 0 && valid_offset(fd, high); high *= 2)
low = high;
while (low < high - 1) {
const int mid = (low + high) / 2;
if (valid_offset(fd, mid))
low = mid;
else
high = mid;
}
return (low + 1);
}
static int
count_blocks (int fd) {
int high, low;
low = 0;
for (high = 1; valid_offset (fd, high); high *= 2)
low = high;
while (low < high - 1)
{
const int mid = (low + high) / 2;
if (valid_offset (fd, mid))
low = mid;
else
high = mid;
}
valid_offset (fd, 0);
return (low + 1);
}
Integer FATR eaf_aread_(Integer *fd, double *offset, void *buf,
Integer *bytes, Integer *req_id)
{
int req, status;
if (!valid_offset(*offset)) return EAF_ERR_NONINTEGER_OFFSET;
status = EAF_Aread((int) *fd, (eaf_off_t) *offset, buf,
(size_t) *bytes, &req);
*req_id = (Integer) req;
return (Integer) status;
}
/*
* Returns the number of bytes in a partition
*/
blkid_loff_t blkid_get_dev_size(int fd)
{
int valid_blkgetsize64 = 1;
#ifdef __linux__
struct utsname ut;
#endif
unsigned long long size64;
unsigned long size;
blkid_loff_t high, low;
#ifdef FDGETPRM
struct floppy_struct this_floppy;
#endif
#ifdef HAVE_SYS_DISKLABEL_H
int part = -1;
struct disklabel lab;
struct partition *pp;
char ch;
struct stat st;
#endif /* HAVE_SYS_DISKLABEL_H */
#ifdef DKIOCGETBLOCKCOUNT /* For Apple Darwin */
if (ioctl(fd, DKIOCGETBLOCKCOUNT, &size64) >= 0) {
if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
&& (size64 << 9 > 0xFFFFFFFF))
return 0; /* EFBIG */
return (blkid_loff_t) size64 << 9;
}
#endif
#ifdef BLKGETSIZE64
#ifdef __linux__
if ((uname(&ut) == 0) &&
((ut.release[0] == '2') && (ut.release[1] == '.') &&
(ut.release[2] < '6') && (ut.release[3] == '.')))
valid_blkgetsize64 = 0;
#endif
if (valid_blkgetsize64 &&
ioctl(fd, BLKGETSIZE64, &size64) >= 0) {
if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
&& ((size64) > 0xFFFFFFFF))
return 0; /* EFBIG */
return size64;
}
#endif
#ifdef BLKGETSIZE
if (ioctl(fd, BLKGETSIZE, &size) >= 0)
return (blkid_loff_t)size << 9;
#endif
/* tested on FreeBSD 6.1-RELEASE i386 */
#ifdef DIOCGMEDIASIZE
if (ioctl(fd, DIOCGMEDIASIZE, &size64) >= 0)
return (off_t)size64;
#endif /* DIOCGMEDIASIZE */
#ifdef FDGETPRM
if (ioctl(fd, FDGETPRM, &this_floppy) >= 0)
return (blkid_loff_t)this_floppy.size << 9;
#endif
#ifdef HAVE_SYS_DISKLABEL_H
/*
* This code works for FreeBSD 4.11 i386, except for the full device
* (such as /dev/ad0). It doesn't work properly for newer FreeBSD
* though. FreeBSD >= 5.0 should be covered by the DIOCGMEDIASIZE
* above however.
*
* Note that FreeBSD >= 4.0 has disk devices as unbuffered (raw,
* character) devices, so we need to check for S_ISCHR, too.
*/
if ((fstat(fd, &st) >= 0) && (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode)))
part = st.st_rdev & 7;
if (part >= 0 && (ioctl(fd, DIOCGDINFO, (char *)&lab) >= 0)) {
pp = &lab.d_partitions[part];
if (pp->p_size)
return pp->p_size << 9;
}
#endif /* HAVE_SYS_DISKLABEL_H */
{
#ifdef HAVE_FSTAT64
struct stat64 st;
if (fstat64(fd, &st) == 0)
#else
struct stat st;
if (fstat(fd, &st) == 0)
#endif
if (S_ISREG(st.st_mode))
return st.st_size;
}
/*
* OK, we couldn't figure it out by using a specialized ioctl,
* which is generally the best way. So do binary search to
* find the size of the partition.
*/
low = 0;
for (high = 1024; valid_offset(fd, high); high *= 2)
low = high;
while (low < high - 1)
{
const blkid_loff_t mid = (low + high) / 2;
if (valid_offset(fd, mid))
low = mid;
else
high = mid;
}
return low + 1;
}
// Return the remaining size, in bytes, of an open file stream. On
// error, return -1. Handling raw device files is substantially more
// complicated than image files. For Linux, an ioctl() is used. For
// other operating systems, a "binary search" technique similar to
// that in e2fsprogs getsize.c is used.
long long measureOpenFile(FILE * f, struct scalpelState *state) {
unsigned long long total = 0, original = ftello(f);
int descriptor = 0;
struct stat *info;
unsigned long long numsectors = 0;
if((fseeko(f, 0, SEEK_END))) {
if(state->modeVerbose) {
fprintf(stdout, "fseeko() call failed on image file.\n");
fprintf(stdout, "Diagnosis: %s\n", strerror(errno));
}
return -1;
}
total = ftello(f);
// for block devices (e.g., raw disk devices), calculating size by
// seeking the end of the opened stream doesn't work. For Linux, we use
// an ioctl() call. For others (e.g., OS X), we use binary search.
// is it a block device?
descriptor = fileno(f);
info = (struct stat *)malloc(sizeof(struct stat));
checkMemoryAllocation(state, info, __LINE__, __FILE__, "info");
fstat(descriptor, info);
if(S_ISBLK(info->st_mode)) {
#if defined (__linux)
if(ioctl(descriptor, BLKGETSIZE, &numsectors) < 0) {
if(state->modeVerbose) {
fprintf(stdout, "Using ioctl() call to measure block device size.\n");
}
#if defined(__DEBUG)
perror("BLKGETSIZE failed");
#endif
}
#else // non-Linux, use binary search
{
unsigned long long low, high, mid;
fprintf(stdout, "Using binary search to measure block device size.\n");
low = 0;
for(high = 512; valid_offset(descriptor, high); high *= 2) {
low = high;
}
while (low < high - 1) {
mid = (low + high) / 2;
if(valid_offset(descriptor, mid)) {
low = mid;
}
else {
high = mid;
}
}
numsectors = (low + 1) >> 9;
}
#endif
// assume device has 512 byte sectors
total = numsectors * 512;
free(info);
}
// restore file position
if((fseeko(f, original, SEEK_SET))) {
if(state->modeVerbose) {
fprintf(stdout,
"fseeko() call to restore file position failed on image file.\n");
}
return -1;
}
return (total - original);
}
Integer FATR eaf_read_(Integer *fd, double *offset, void *buf, Integer *bytes)
{
if (!valid_offset(*offset)) return EAF_ERR_NONINTEGER_OFFSET;
return (Integer) eaf_read((int) *fd, (eaf_off_t) *offset, buf,
(size_t) *bytes);
}
int main(int argc, char *argv[]) {
char * bytes_count_str = NULL;
char * devname;
reiserfs_filsys_t fs;
struct reiserfs_super_block * rs;
int c;
int error;
struct reiserfs_super_block *sb_old;
unsigned long block_count_new;
print_banner ("resize_reiserfs");
while ((c = getopt(argc, argv, "fvcqs:")) != EOF) {
switch (c) {
case 's' :
if (!optarg)
die("%s: Missing argument to -s option", argv[0]);
bytes_count_str = optarg;
break;
case 'f':
opt_force = 1;
break;
case 'v':
opt_verbose++;
break;
case 'n':
/* no nowrite option at this moment */
/* opt_nowrite = 1; */
break;
case 'c':
opt_safe = 1;
break;
case 'q':
opt_verbose = 0;
break;
default:
print_usage_and_exit ();
}
}
if (optind == argc )
print_usage_and_exit();
devname = argv[optind];
fs = reiserfs_open(devname, O_RDONLY, &error, 0);
if (!fs)
die ("%s: can not open '%s': %s", argv[0], devname, strerror(error));
if (no_reiserfs_found (fs)) {
die ("resize_reiserfs: no reiserfs found on the device");
}
if (!spread_bitmaps (fs)) {
die ("resize_reiserfs: cannot resize reiserfs in old (not spread bitmap) format.\n");
}
rs = fs->s_rs;
if(bytes_count_str) { /* new fs size is specified by user */
block_count_new = calc_new_fs_size(rs_block_count(rs), fs->s_blocksize, bytes_count_str);
} else { /* use whole device */
block_count_new = count_blocks(devname, fs->s_blocksize, -1);
}
if (is_mounted (devname)) {
reiserfs_close(fs);
return resize_fs_online(devname, block_count_new);
}
if (rs_state(rs) != REISERFS_VALID_FS)
die ("%s: the file system isn't in valid state\n", argv[0]);
if(!valid_offset(fs->s_dev, (loff_t) block_count_new * fs->s_blocksize - 1))
die ("%s: %s too small", argv[0], devname);
sb_old = 0; /* Needed to keep idiot compiler from issuing false warning */
/* save SB for reporting */
if(opt_verbose) {
sb_old = getmem(SB_SIZE);
memcpy(sb_old, SB_DISK_SUPER_BLOCK(fs), SB_SIZE);
}
if (block_count_new == SB_BLOCK_COUNT(fs))
die ("%s: Calculated fs size is the same as the previous one.", argv[0]);
if (block_count_new > SB_BLOCK_COUNT(fs))
expand_fs(fs, block_count_new);
else
shrink_fs(fs, block_count_new);
if(opt_verbose) {
sb_report(rs, sb_old);
freemem(sb_old);
}
set_state (rs, REISERFS_VALID_FS);
bwrite_cond(SB_BUFFER_WITH_SB(fs));
if (opt_verbose) {
printf("\nSyncing..");
fflush(stdout);
}
reiserfs_close (fs);
if (opt_verbose)
printf("done\n");
return 0;
}
/*
* Returns the number of blocks in a partition
*/
blkid_loff_t blkid_get_dev_size(int fd)
{
int valid_blkgetsize64 = 1;
#ifdef __linux__
struct utsname ut;
#endif
unsigned long long size64;
unsigned long size;
blkid_loff_t high, low;
#ifdef FDGETPRM
struct floppy_struct this_floppy;
#endif
#ifdef HAVE_SYS_DISKLABEL_H
int part = -1;
struct disklabel lab;
struct partition *pp;
char ch;
struct stat st;
#endif /* HAVE_SYS_DISKLABEL_H */
#ifdef DKIOCGETBLOCKCOUNT /* For Apple Darwin */
if (ioctl(fd, DKIOCGETBLOCKCOUNT, &size64) >= 0) {
if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
&& (size64 << 9 > 0xFFFFFFFF))
return 0; /* EFBIG */
return (blkid_loff_t) size64 << 9;
}
#endif
#ifdef BLKGETSIZE64
#ifdef __linux__
if ((uname(&ut) == 0) &&
((ut.release[0] == '2') && (ut.release[1] == '.') &&
(ut.release[2] < '6') && (ut.release[3] == '.')))
valid_blkgetsize64 = 0;
#endif
if (valid_blkgetsize64 &&
ioctl(fd, BLKGETSIZE64, &size64) >= 0) {
if ((sizeof(blkid_loff_t) < sizeof(unsigned long long))
&& ((size64) > 0xFFFFFFFF))
return 0; /* EFBIG */
return size64;
}
#endif
#ifdef BLKGETSIZE
if (ioctl(fd, BLKGETSIZE, &size) >= 0)
return (blkid_loff_t)size << 9;
#endif
#ifdef FDGETPRM
if (ioctl(fd, FDGETPRM, &this_floppy) >= 0)
return (blkid_loff_t)this_floppy.size << 9;
#endif
#ifdef HAVE_SYS_DISKLABEL_H
#if 0
/*
* This should work in theory but I haven't tested it. Anyone
* on a BSD system want to test this for me? In the meantime,
* binary search mechanism should work just fine.
*/
if ((fstat(fd, &st) >= 0) && S_ISBLK(st.st_mode))
part = st.st_rdev & 7;
if (part >= 0 && (ioctl(fd, DIOCGDINFO, (char *)&lab) >= 0)) {
pp = &lab.d_partitions[part];
if (pp->p_size)
return pp->p_size << 9;
}
#endif
#endif /* HAVE_SYS_DISKLABEL_H */
/*
* OK, we couldn't figure it out by using a specialized ioctl,
* which is generally the best way. So do binary search to
* find the size of the partition.
*/
low = 0;
for (high = 1024; valid_offset(fd, high); high *= 2)
low = high;
while (low < high - 1)
{
const blkid_loff_t mid = (low + high) / 2;
if (valid_offset(fd, mid))
low = mid;
else
high = mid;
}
return low + 1;
}
int main(int argc, char *argv[]) {
char * bytes_count_str = NULL;
char * devname;
struct stat statbuf;
int c;
int dev;
struct reiserfs_super_block *sb, *sb_old;
while ((c = getopt(argc, argv, "fvcqs:")) != EOF) {
switch (c) {
case 's' :
if (!optarg)
die("%s: Missing argument to -s option", argv[0]);
bytes_count_str = optarg;
break;
case 'f':
opt_force = 1;
break;
case 'v':
opt_verbose++;
break;
case 'n':
/* no nowrite option at this moment */
/* opt_nowrite = 1; */
break;
case 'c':
opt_safe = 1;
break;
case 'q':
opt_verbose = 0;
break;
default:
print_usage_and_exit ();
}
}
if (optind == argc || (!bytes_count_str))
print_usage_and_exit();
devname = argv[optind];
/* open_device will die if it could not open device */
dev = open (devname, O_RDWR);
if (dev == -1)
die ("%s: can not open '%s': %s", argv[0], devname, strerror (errno));
if (fstat (dev, &statbuf) < 0)
die ("%s: unable to stat %s", argv[0], devname);
if (!S_ISBLK (statbuf.st_mode) && opt_force )
die ("%s: '%s (%o)' is not a block device",
argv[0], devname, statbuf.st_mode);
read_superblock(dev);
sb = (struct reiserfs_super_block *) g_sb_bh->b_data;
g_block_count_new = calc_new_fs_size(sb->s_block_count,
sb->s_blocksize, bytes_count_str);
if (is_mounted (devname)) {
close(dev);
if (!opt_force)
die ("%s: '%s' contains a mounted file system,\n"
"\tspecify -f option to resize the fs online\n",
argv[0], devname);
resize_fs_online(devname, g_block_count_new);
return 0;
}
if (sb->s_state != REISERFS_VALID_FS)
die ("%s: the file system isn't in valid state\n", argv[0]);
if(!valid_offset(dev, (loff_t) g_block_count_new * sb->s_blocksize - 1))
die ("%s: %s too small", argv[0], devname);
sb_old = 0; /* Needed to keep idiot compiler from issuing false warning */
/* save SB for reporting */
if(opt_verbose) {
sb_old = getmem(sizeof(struct reiserfs_super_block));
memcpy(sb_old, sb, sizeof(struct reiserfs_super_block));
}
if (g_block_count_new == sb->s_block_count)
die ("%s: Calculated fs size is the same as the previous one.",
argv[0]);
if (g_block_count_new > sb->s_block_count)
expand_fs();
else
shrink_fs(g_block_count_new);
if(opt_verbose) {
sb_report(sb, sb_old);
freemem(sb_old);
}
check_and_free_mem ();
if (opt_verbose) {
printf("\nSyncing..");
fflush(stdout);
}
fsync (dev);
if (opt_verbose)
printf("done\n");
close(dev);
return 0;
}
/*
* Returns the number of blocks in a partition
*/
errcode_t ext2fs_get_device_size(const char *file, int blocksize,
blk_t *retblocks)
{
int fd;
#ifdef BLKGETSIZE
unsigned long size;
#endif
ext2_loff_t high, low;
#ifdef FDGETPRM
struct floppy_struct this_floppy;
#endif
#ifdef HAVE_SYS_DISKLABEL_H
int part;
struct disklabel lab;
struct partition *pp;
char ch;
#endif /* HAVE_SYS_DISKLABEL_H */
#ifdef HAVE_OPEN64
fd = open64(file, O_RDONLY);
#else
fd = open(file, O_RDONLY);
#endif
if (fd < 0)
return errno;
#ifdef BLKGETSIZE
if (ioctl(fd, BLKGETSIZE, &size) >= 0) {
close(fd);
*retblocks = size / (blocksize / 512);
return 0;
}
#endif
#ifdef FDGETPRM
if (ioctl(fd, FDGETPRM, &this_floppy) >= 0) {
close(fd);
*retblocks = this_floppy.size / (blocksize / 512);
return 0;
}
#endif
#ifdef HAVE_SYS_DISKLABEL_H
part = strlen(file) - 1;
if (part >= 0) {
ch = file[part];
if (isdigit(ch))
part = 0;
else if (ch >= 'a' && ch <= 'h')
part = ch - 'a';
else
part = -1;
}
if (part >= 0 && (ioctl(fd, DIOCGDINFO, (char *)&lab) >= 0)) {
pp = &lab.d_partitions[part];
if (pp->p_size) {
close(fd);
*retblocks = pp->p_size / (blocksize / 512);
return 0;
}
}
#endif /* HAVE_SYS_DISKLABEL_H */
/*
* OK, we couldn't figure it out by using a specialized ioctl,
* which is generally the best way. So do binary search to
* find the size of the partition.
*/
low = 0;
for (high = 1024; valid_offset (fd, high); high *= 2)
low = high;
while (low < high - 1)
{
const ext2_loff_t mid = (low + high) / 2;
if (valid_offset (fd, mid))
low = mid;
else
high = mid;
}
valid_offset (fd, 0);
close(fd);
*retblocks = (low + 1) / blocksize;
return 0;
}
void set_valid(jint value) {
int_field_put(valid_offset(), value);
}
jint valid() const {
return int_field(valid_offset());
}
