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/* $OpenBSD: newfs_ext2fs.c,v 1.25 2016/03/16 08:34:11 natano Exp $ */ |
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/* $NetBSD: newfs_ext2fs.c,v 1.8 2009/03/02 10:38:13 tsutsui Exp $ */ |
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/* |
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* Copyright (c) 1983, 1989, 1993, 1994 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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/* |
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* newfs: friendly front end to mke2fs |
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*/ |
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#include <sys/param.h> /* powerof2 */ |
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#include <sys/types.h> |
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#include <sys/ioctl.h> |
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#include <sys/dkio.h> |
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#include <sys/disklabel.h> |
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#include <sys/mount.h> |
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#include <ufs/ext2fs/ext2fs.h> |
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#include <ufs/ext2fs/ext2fs_dinode.h> |
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#include <ctype.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <fcntl.h> |
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#include <inttypes.h> |
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#include <limits.h> |
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#include <paths.h> |
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#include <stdint.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <util.h> |
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#define MINIMUM(a, b) (((a) < (b)) ? (a) : (b)) |
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#include "extern.h" |
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static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *); |
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static void usage(void) __dead; |
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/* |
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* For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults, |
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* otherwise if less than MEDIUM_FSSIZE use M_DFL_*, otherwise use |
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* L_DFL_*. |
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*/ |
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#define SMALL_FSSIZE ((4 * 1024 * 1024) / sectorsize) /* 4MB */ |
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#define S_DFL_BSIZE 1024 |
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#define MEDIUM_FSSIZE ((512 * 1024 * 1024) / sectorsize) /* 512MB */ |
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#define M_DFL_BSIZE 1024 |
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#define L_DFL_BSIZE 4096 |
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/* |
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* Each file system has a number of inodes statically allocated. |
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* We allocate one inode slot per 2, 4, or 8 blocks, expecting this |
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* to be far more than we will ever need. |
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*/ |
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#define S_DFL_NINODE(blocks) ((blocks) / 8) |
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#define M_DFL_NINODE(blocks) ((blocks) / 4) |
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#define L_DFL_NINODE(blocks) ((blocks) / 2) |
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/* |
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* Default sector size. |
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*/ |
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#define DFL_SECSIZE 512 |
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int Nflag; /* run without writing file system */ |
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int Oflag = 0; /* format as conservative REV0 by default */ |
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int verbosity; /* amount of printf() output */ |
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#define DEFAULT_VERBOSITY 4 /* 4 is traditional behavior of newfs(8) */ |
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int64_t fssize; /* file system size */ |
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uint sectorsize; /* bytes/sector */ |
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uint16_t inodesize = EXT2_REV0_DINODE_SIZE; /* inode size */ |
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uint fsize = 0; /* fragment size */ |
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uint bsize = 0; /* block size */ |
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uint minfree = MINFREE; /* free space threshold */ |
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uint density; /* number of bytes per inode */ |
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uint num_inodes; /* number of inodes (overrides density) */ |
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int max_cols; |
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char *volname = NULL; /* volume name */ |
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static char *disktype = NULL; |
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struct disklabel *getdisklabel(const char *, int); |
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struct partition *getpartition(int, const char *, char *[], struct disklabel **); |
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int |
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main(int argc, char *argv[]) |
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{ |
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struct statfs *mp; |
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struct stat sb; |
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int ch, fd, len, n, Fflag, Iflag, Zflag; |
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char *s1, *s2, *special; |
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const char *opstring; |
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int byte_sized, fl; |
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uint blocks; /* number of blocks */ |
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struct partition *pp = NULL; |
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struct disklabel *lp; |
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struct winsize winsize; |
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/* Get terminal width */ |
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if (ioctl(fileno(stdout), TIOCGWINSZ, &winsize) == 0) |
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max_cols = winsize.ws_col; |
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else |
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max_cols = 80; |
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if (pledge("stdio rpath wpath cpath disklabel flock", NULL) == -1) |
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err(1, "pledge"); |
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Fflag = Iflag = Zflag = 0; |
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verbosity = -1; |
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opstring = "D:FINO:S:V:Zb:f:i:l:m:n:qs:t:v:"; |
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byte_sized = 0; |
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while ((ch = getopt(argc, argv, opstring)) != -1) |
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switch (ch) { |
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case 'D': |
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inodesize = (uint16_t)strtol(optarg, &s1, 0); |
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if (*s1 || (inodesize != 128 && inodesize != 256)) |
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errx(1, "Bad inode size %d " |
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"(only 128 and 256 supported)", inodesize); |
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break; |
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case 'F': |
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Fflag = 1; |
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break; |
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case 'I': |
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Iflag = 1; |
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break; |
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case 'N': |
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Nflag = 1; |
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if (verbosity == -1) |
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verbosity = DEFAULT_VERBOSITY; |
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break; |
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case 'O': |
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Oflag = strsuftoi64("format", optarg, 0, 1, NULL); |
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break; |
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case 'S': |
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/* |
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* XXX: |
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* non-512 byte sectors almost certainly don't work. |
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*/ |
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sectorsize = strsuftoi64("sector size", |
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optarg, 512, 65536, NULL); |
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if (!powerof2(sectorsize)) |
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errx(EXIT_FAILURE, |
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"sector size `%s' is not a power of 2.", |
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optarg); |
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break; |
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case 'V': |
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verbosity = strsuftoi64("verbose", optarg, 0, 4, NULL); |
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break; |
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case 'Z': |
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Zflag = 1; |
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break; |
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case 'b': |
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bsize = strsuftoi64("block size", |
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optarg, MINBSIZE, EXT2_MAXBSIZE, NULL); |
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break; |
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case 'f': |
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fsize = strsuftoi64("fragment size", |
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optarg, MINBSIZE, EXT2_MAXBSIZE, NULL); |
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break; |
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case 'i': |
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density = strsuftoi64("bytes per inode", |
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optarg, 1, INT_MAX, NULL); |
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break; |
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case 'm': |
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minfree = strsuftoi64("free space %", |
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optarg, 0, 99, NULL); |
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break; |
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case 'n': |
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num_inodes = strsuftoi64("number of inodes", |
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optarg, 1, INT_MAX, NULL); |
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break; |
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case 'q': |
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verbosity = 1; |
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break; |
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case 's': |
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fssize = strsuftoi64("file system size", |
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optarg, INT64_MIN, INT64_MAX, &byte_sized); |
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break; |
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case 't': |
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/* compat with newfs -t */ |
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break; |
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case 'v': |
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volname = optarg; |
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if (volname[0] == '\0') |
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errx(EXIT_FAILURE, |
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"Volume name cannot be zero length"); |
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break; |
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case '?': |
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default: |
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usage(); |
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} |
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argc -= optind; |
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argv += optind; |
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if (verbosity == -1) |
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/* Default to showing cg info */ |
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verbosity = DEFAULT_VERBOSITY; |
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if (argc != 1) |
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usage(); |
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memset(&sb, 0, sizeof(sb)); |
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special = argv[0]; |
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fl = Nflag ? O_RDONLY : O_RDWR; |
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if (Fflag) { |
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/* |
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* It's a file system image |
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* no label, use fixed default for sectorsize. |
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*/ |
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if (sectorsize == 0) |
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sectorsize = DFL_SECSIZE; |
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/* creating image in a regular file */ |
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if (!Nflag && fssize > 0) |
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fl |= O_CREAT; |
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fd = open(special, fl, 0666); |
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if (fd == -1) |
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err(EXIT_FAILURE, "can't open file %s", special); |
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if (fstat(fd, &sb) == -1) |
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err(EXIT_FAILURE, "can't fstat opened %s", special); |
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} else { /* !Fflag */ |
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fd = opendev(special, fl, 0, &special); |
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if (fd < 0 || fstat(fd, &sb) == -1) |
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err(EXIT_FAILURE, "%s: open", special); |
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254 |
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if (!Nflag) { |
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/* Bail if target special is mounted */ |
256 |
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n = getmntinfo(&mp, MNT_NOWAIT); |
257 |
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if (n == 0) |
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err(EXIT_FAILURE, "%s: getmntinfo", special); |
259 |
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260 |
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len = sizeof(_PATH_DEV) - 1; |
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s1 = special; |
262 |
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if (strncmp(_PATH_DEV, s1, len) == 0) |
263 |
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s1 += len; |
264 |
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265 |
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while (--n >= 0) { |
266 |
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s2 = mp->f_mntfromname; |
267 |
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if (strncmp(_PATH_DEV, s2, len) == 0) { |
268 |
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s2 += len - 1; |
269 |
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*s2 = 'r'; |
270 |
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} |
271 |
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if (strcmp(s1, s2) == 0 || |
272 |
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strcmp(s1, &s2[1]) == 0) |
273 |
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errx(EXIT_FAILURE, |
274 |
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"%s is mounted on %s", |
275 |
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special, mp->f_mntonname); |
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++mp; |
277 |
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} |
278 |
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} |
279 |
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280 |
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pp = getpartition(fd, special, argv, &lp); |
281 |
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if (!Iflag) { |
282 |
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static const char m[] = |
283 |
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"%s partition type is not `%s' (or use -I)"; |
284 |
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if (pp->p_fstype != FS_EXT2FS) |
285 |
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errx(EXIT_FAILURE, m, special, "ext2fs"); |
286 |
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} |
287 |
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if (sectorsize == 0) { |
288 |
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sectorsize = lp->d_secsize; |
289 |
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if (sectorsize <= 0) |
290 |
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errx(EXIT_FAILURE, "no default sector size"); |
291 |
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} |
292 |
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} |
293 |
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294 |
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if (byte_sized) |
295 |
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fssize /= sectorsize; |
296 |
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if (fssize <= 0) { |
297 |
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if (sb.st_size != 0) |
298 |
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fssize += sb.st_size / sectorsize; |
299 |
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else if (pp) |
300 |
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fssize += DL_GETPSIZE(pp); |
301 |
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if (fssize <= 0) |
302 |
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errx(EXIT_FAILURE, |
303 |
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"Unable to determine file system size"); |
304 |
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} |
305 |
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|
306 |
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/* XXXLUKEM: only ftruncate() regular files ? (dsl: or at all?) */ |
307 |
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if (Fflag && !Nflag |
308 |
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&& ftruncate(fd, (off_t)fssize * sectorsize) == -1) |
309 |
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err(1, "can't ftruncate %s to %" PRId64, special, fssize); |
310 |
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|
311 |
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if (Zflag && !Nflag) { /* pre-zero (and de-sparce) the file */ |
312 |
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char *buf; |
313 |
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int bufsize, i; |
314 |
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off_t bufrem; |
315 |
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struct statfs sfs; |
316 |
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|
317 |
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if (fstatfs(fd, &sfs) == -1) { |
318 |
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warn("can't fstatvfs `%s'", special); |
319 |
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bufsize = 8192; |
320 |
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} else |
321 |
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bufsize = sfs.f_iosize; |
322 |
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|
323 |
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if ((buf = calloc(1, bufsize)) == NULL) |
324 |
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err(1, "can't allocate buffer of %d", |
325 |
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bufsize); |
326 |
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bufrem = fssize * sectorsize; |
327 |
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if (verbosity > 0) |
328 |
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printf("Creating file system image in `%s', " |
329 |
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"size %" PRId64 " bytes, in %d byte chunks.\n", |
330 |
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special, bufrem, bufsize); |
331 |
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while (bufrem > 0) { |
332 |
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i = write(fd, buf, MINIMUM(bufsize, bufrem)); |
333 |
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if (i == -1) |
334 |
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err(1, "writing image"); |
335 |
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bufrem -= i; |
336 |
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} |
337 |
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free(buf); |
338 |
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} |
339 |
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|
340 |
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/* Sort out fragment and block sizes */ |
341 |
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if (bsize == 0) { |
342 |
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bsize = fsize; |
343 |
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if (bsize == 0) { |
344 |
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if (fssize < SMALL_FSSIZE) |
345 |
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bsize = S_DFL_BSIZE; |
346 |
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else if (fssize < MEDIUM_FSSIZE) |
347 |
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bsize = M_DFL_BSIZE; |
348 |
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else |
349 |
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bsize = L_DFL_BSIZE; |
350 |
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} |
351 |
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} |
352 |
|
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if (fsize == 0) |
353 |
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fsize = bsize; |
354 |
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|
355 |
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blocks = fssize * sectorsize / bsize; |
356 |
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|
357 |
|
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if (num_inodes == 0) { |
358 |
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if (density != 0) |
359 |
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num_inodes = fssize / density; |
360 |
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else { |
361 |
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if (fssize < SMALL_FSSIZE) |
362 |
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num_inodes = S_DFL_NINODE(blocks); |
363 |
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else if (fssize < MEDIUM_FSSIZE) |
364 |
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num_inodes = M_DFL_NINODE(blocks); |
365 |
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else |
366 |
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num_inodes = L_DFL_NINODE(blocks); |
367 |
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} |
368 |
|
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} |
369 |
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mke2fs(special, fd); |
370 |
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|
371 |
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close(fd); |
372 |
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exit(EXIT_SUCCESS); |
373 |
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} |
374 |
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|
375 |
|
|
static int64_t |
376 |
|
|
strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, |
377 |
|
|
int *num_suffix) |
378 |
|
|
{ |
379 |
|
|
int64_t result, r1; |
380 |
|
|
int shift = 0; |
381 |
|
|
char *ep; |
382 |
|
|
|
383 |
|
|
errno = 0; |
384 |
|
|
r1 = strtoll(arg, &ep, 10); |
385 |
|
|
if (ep[0] != '\0' && ep[1] != '\0') |
386 |
|
|
errx(EXIT_FAILURE, |
387 |
|
|
"%s `%s' is not a valid number.", desc, arg); |
388 |
|
|
switch (ep[0]) { |
389 |
|
|
case '\0': |
390 |
|
|
case 's': |
391 |
|
|
case 'S': |
392 |
|
|
if (num_suffix != NULL) |
393 |
|
|
*num_suffix = 0; |
394 |
|
|
break; |
395 |
|
|
case 'g': |
396 |
|
|
case 'G': |
397 |
|
|
shift += 10; |
398 |
|
|
/* FALLTHROUGH */ |
399 |
|
|
case 'm': |
400 |
|
|
case 'M': |
401 |
|
|
shift += 10; |
402 |
|
|
/* FALLTHROUGH */ |
403 |
|
|
case 'k': |
404 |
|
|
case 'K': |
405 |
|
|
shift += 10; |
406 |
|
|
/* FALLTHROUGH */ |
407 |
|
|
case 'b': |
408 |
|
|
case 'B': |
409 |
|
|
if (num_suffix != NULL) |
410 |
|
|
*num_suffix = 1; |
411 |
|
|
break; |
412 |
|
|
default: |
413 |
|
|
errx(EXIT_FAILURE, |
414 |
|
|
"`%s' is not a valid suffix for %s.", ep, desc); |
415 |
|
|
} |
416 |
|
|
result = r1 << shift; |
417 |
|
|
if (errno == ERANGE || result >> shift != r1) |
418 |
|
|
errx(EXIT_FAILURE, |
419 |
|
|
"%s `%s' is too large to convert.", desc, arg); |
420 |
|
|
if (result < min) |
421 |
|
|
errx(EXIT_FAILURE, |
422 |
|
|
"%s `%s' (%" PRId64 ") is less than the minimum (%" |
423 |
|
|
PRId64 ").", desc, arg, result, min); |
424 |
|
|
if (result > max) |
425 |
|
|
errx(EXIT_FAILURE, |
426 |
|
|
"%s `%s' (%" PRId64 ") is greater than the maximum (%" |
427 |
|
|
PRId64 ").", desc, arg, result, max); |
428 |
|
|
return result; |
429 |
|
|
} |
430 |
|
|
|
431 |
|
|
static const char help_strings[] = |
432 |
|
|
"\t-b bsize\tblock size\n" |
433 |
|
|
"\t-D inodesize\tsize of an inode in bytes (128 or 256)\n" |
434 |
|
|
"\t-F \t\tcreate file system image in regular file\n" |
435 |
|
|
"\t-f fsize\tfragment size\n" |
436 |
|
|
"\t-I \t\tdo not check that the file system type is `ext2fs'\n" |
437 |
|
|
"\t-i density\tnumber of bytes per inode\n" |
438 |
|
|
"\t-m minfree\tminimum free space %\n" |
439 |
|
|
"\t-N \t\tdo not create file system, just print out parameters\n" |
440 |
|
|
"\t-n inodes\tnumber of inodes (overrides -i density)\n" |
441 |
|
|
"\t-O N\t\tfilesystem revision: 0 ==> REV0, 1 ==> REV1 (default 0)\n" |
442 |
|
|
"\t-S secsize\tsector size\n" |
443 |
|
|
"\t-s fssize\tfile system size (sectors)\n" |
444 |
|
|
"\t-V verbose\toutput verbosity: 0 ==> none, 4 ==> max\n" |
445 |
|
|
"\t-v volname\text2fs volume name\n" |
446 |
|
|
"\t-Z \t\tpre-zero the image file\n"; |
447 |
|
|
|
448 |
|
|
static void |
449 |
|
|
usage(void) |
450 |
|
|
{ |
451 |
|
|
|
452 |
|
|
extern char *__progname; |
453 |
|
|
|
454 |
|
|
fprintf(stderr, |
455 |
|
|
"usage: %s [ fsoptions ] special-device\n", __progname); |
456 |
|
|
fprintf(stderr, "where fsoptions are:\n"); |
457 |
|
|
fprintf(stderr, "%s", help_strings); |
458 |
|
|
|
459 |
|
|
exit(EXIT_FAILURE); |
460 |
|
|
} |
461 |
|
|
|
462 |
|
|
struct disklabel * |
463 |
|
|
getdisklabel(const char *s, int fd) |
464 |
|
|
{ |
465 |
|
|
static struct disklabel lab; |
466 |
|
|
|
467 |
|
|
if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) { |
468 |
|
|
if (disktype != NULL) { |
469 |
|
|
struct disklabel *lp; |
470 |
|
|
|
471 |
|
|
//unlabeled++; |
472 |
|
|
lp = getdiskbyname(disktype); |
473 |
|
|
if (lp == NULL) |
474 |
|
|
errx(EXIT_FAILURE, "%s: unknown disk type", |
475 |
|
|
disktype); |
476 |
|
|
return (lp); |
477 |
|
|
} |
478 |
|
|
warn("ioctl (GDINFO)"); |
479 |
|
|
errx(EXIT_FAILURE, |
480 |
|
|
"%s: can't read disk label; disk type must be specified", |
481 |
|
|
s); |
482 |
|
|
} |
483 |
|
|
return (&lab); |
484 |
|
|
} |
485 |
|
|
|
486 |
|
|
struct partition * |
487 |
|
|
getpartition(int fsi, const char *special, char *argv[], struct disklabel **dl) |
488 |
|
|
{ |
489 |
|
|
struct stat st; |
490 |
|
|
const char *cp; |
491 |
|
|
struct disklabel *lp; |
492 |
|
|
struct partition *pp; |
493 |
|
|
|
494 |
|
|
if (fstat(fsi, &st) < 0) |
495 |
|
|
err(EXIT_FAILURE, "%s", special); |
496 |
|
|
if (S_ISBLK(st.st_mode)) |
497 |
|
|
errx(EXIT_FAILURE, "%s: block device", special); |
498 |
|
|
if (!S_ISCHR(st.st_mode)) |
499 |
|
|
warnx("%s: not a character-special device", special); |
500 |
|
|
if (*argv[0] == '\0') |
501 |
|
|
errx(EXIT_FAILURE, "empty partition name supplied"); |
502 |
|
|
cp = argv[0] + strlen(argv[0]) - 1; |
503 |
|
|
if ((*cp < 'a' || *cp > ('a' + getmaxpartitions() - 1)) |
504 |
|
|
&& !isdigit((unsigned char)*cp)) |
505 |
|
|
errx(EXIT_FAILURE, "%s: can't figure out file system partition", argv[0]); |
506 |
|
|
lp = getdisklabel(special, fsi); |
507 |
|
|
if (isdigit((unsigned char)*cp)) |
508 |
|
|
pp = &lp->d_partitions[0]; |
509 |
|
|
else |
510 |
|
|
pp = &lp->d_partitions[*cp - 'a']; |
511 |
|
|
if (DL_GETPSIZE(pp) == 0) |
512 |
|
|
errx(EXIT_FAILURE, "%s: `%c' partition is unavailable", argv[0], *cp); |
513 |
|
|
if (pp->p_fstype == FS_BOOT) |
514 |
|
|
errx(EXIT_FAILURE, "%s: `%c' partition overlaps boot program", |
515 |
|
|
argv[0], *cp); |
516 |
|
|
*dl = lp; |
517 |
|
|
return pp; |
518 |
|
|
} |
519 |
|
|
|