mirror of https://github.com/vitalif/e2fsprogs
122 lines
2.4 KiB
C
122 lines
2.4 KiB
C
/*
|
|
* main.c --- ext2 resizer main program
|
|
*
|
|
* Copyright (C) 1997 Theodore Ts'o
|
|
*
|
|
* %Begin-Header%
|
|
* All rights reserved.
|
|
* %End-Header%
|
|
*/
|
|
|
|
#ifdef HAVE_GETOPT_H
|
|
#include <getopt.h>
|
|
#endif
|
|
#include <fcntl.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
|
|
#include "resize2fs.h"
|
|
|
|
#define E2FSPROGS_VERSION "1.10"
|
|
#define E2FSPROGS_DATE "27-Apr-97"
|
|
|
|
char *program_name, *device_name;
|
|
|
|
static volatile void usage (char *prog)
|
|
{
|
|
fprintf (stderr, "usage: %s [-d debug_flags] [-p] [-F] device new-size\n", prog);
|
|
exit (1);
|
|
}
|
|
|
|
void main (int argc, char ** argv)
|
|
{
|
|
errcode_t retval;
|
|
ext2_filsys fs;
|
|
int c;
|
|
int flags = 0;
|
|
int flush = 0;
|
|
int fd;
|
|
blk_t new_size;
|
|
io_manager io_ptr;
|
|
|
|
fprintf (stderr, "resize2fs %s, %s for EXT2 FS %s, %s\n",
|
|
E2FSPROGS_VERSION, E2FSPROGS_DATE,
|
|
EXT2FS_VERSION, EXT2FS_DATE);
|
|
if (argc && *argv)
|
|
program_name = *argv;
|
|
|
|
while ((c = getopt (argc, argv, "d:Fhp")) != EOF) {
|
|
switch (c) {
|
|
case 'h':
|
|
usage(program_name);
|
|
break;
|
|
case 'F':
|
|
flush = 1;
|
|
break;
|
|
case 'd':
|
|
flags |= atoi(optarg);
|
|
break;
|
|
case 'p':
|
|
flags |= RESIZE_PERCENT_COMPLETE;
|
|
break;
|
|
default:
|
|
usage (program_name);
|
|
}
|
|
}
|
|
if (optind > argc - 2)
|
|
usage (program_name);
|
|
device_name = argv[optind++];
|
|
new_size = atoi(argv[optind++]);
|
|
initialize_ext2_error_table();
|
|
|
|
if (flush) {
|
|
#ifdef BLKFLSBUF
|
|
fd = open(device_name, O_RDONLY, 0);
|
|
|
|
if (fd < 0) {
|
|
com_err("open", errno, "while opening %s for flushing",
|
|
device_name);
|
|
exit(1);
|
|
}
|
|
if (ioctl(fd, BLKFLSBUF, 0) < 0) {
|
|
com_err("BLKFLSBUF", errno, "while trying to flush %s",
|
|
device_name);
|
|
exit(1);
|
|
}
|
|
close(fd);
|
|
#else
|
|
fprintf(stderr, "BLKFLSBUF not supported");
|
|
exit(1);
|
|
#endif /* BLKFLSBUF */
|
|
}
|
|
|
|
if (flags & RESIZE_DEBUG_IO) {
|
|
io_ptr = test_io_manager;
|
|
test_io_backing_manager = unix_io_manager;
|
|
} else
|
|
io_ptr = unix_io_manager;
|
|
|
|
retval = ext2fs_open (device_name, EXT2_FLAG_RW, 0, 0,
|
|
io_ptr, &fs);
|
|
if (retval) {
|
|
com_err (program_name, retval, "while trying to open %s",
|
|
device_name);
|
|
printf ("Couldn't find valid filesystem superblock.\n");
|
|
exit (1);
|
|
}
|
|
retval = ext2fs_read_bitmaps(fs);
|
|
if (retval) {
|
|
com_err (program_name, retval,
|
|
"while trying to read the bitmaps", device_name);
|
|
ext2fs_close (fs);
|
|
exit (1);
|
|
}
|
|
retval = resize_fs(fs, new_size, flags);
|
|
if (retval) {
|
|
com_err(program_name, retval, "while trying to resize %s",
|
|
device_name);
|
|
ext2fs_close (fs);
|
|
}
|
|
exit (0);
|
|
}
|