makefs.h revision 1.4
1 /* $NetBSD: makefs.h,v 1.4 2001/12/05 11:08:53 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Luke Mewburn for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/stat.h> 39 40 41 /* 42 * fsnode - 43 * a component of the tree; contains a filename, a pointer to 44 * fsinode, optional symlink name, and tree pointers 45 * 46 * fsinode - 47 * equivalent to an inode, containing target file system inode number, 48 * refcount (nlink), and stat buffer 49 * 50 * A tree of fsnodes looks like this: 51 * 52 * name "." "bin" "netbsd" 53 * type S_IFDIR S_IFDIR S_IFREG 54 * next > > NULL 55 * parent NULL NULL NULL 56 * child NULL v 57 * 58 * name "." "ls" 59 * type S_IFDIR S_IFREG 60 * next > NULL 61 * parent ^ ^ (to "bin") 62 * child NULL NULL 63 * 64 * Notes: 65 * - first always points to first entry, at current level, which 66 * must be "." when the tree has been built; during build it may 67 * not be if "." hasn't yet been found by readdir(2). 68 * 69 * - if dup is not NULL, it points to an fsent that this is a 70 * duplicate of; only relevant for non directories with > 1 link 71 */ 72 73 enum fi_flags { 74 FI_SIZED = 1<<0, /* inode sized */ 75 FI_ALLOCATED = 1<<1, /* fsinode->ino allocated */ 76 FI_WRITTEN = 1<<2, /* inode written */ 77 }; 78 79 typedef struct { 80 uint32_t ino; /* inode number used on target fs */ 81 uint32_t nlink; /* number of links to this entry */ 82 enum fi_flags flags; /* flags used by fs specific code */ 83 struct stat st; /* stat entry */ 84 } fsinode; 85 86 typedef struct _fsnode { 87 struct _fsnode *parent; /* parent (NULL if root) */ 88 struct _fsnode *child; /* child (if type == S_IFDIR) */ 89 struct _fsnode *next; /* next */ 90 struct _fsnode *first; /* first node of current level (".") */ 91 uint32_t type; /* type of entry */ 92 fsinode *inode; /* actual inode data */ 93 char *symlink; /* symlink target */ 94 char *name; /* file name */ 95 } fsnode; 96 97 98 /* 99 * fsinfo_t - contains various settings and parameters pertaining to 100 * the image, including current settings, global options, and fs 101 * specific options 102 */ 103 typedef struct { 104 /* current settings */ 105 off_t size; /* total size */ 106 off_t inodes; /* number of inodes */ 107 uint32_t curinode; /* current inode */ 108 109 /* image settings */ 110 int fd; /* file descriptor of image */ 111 void *superblock; /* superblock */ 112 113 114 /* global options */ 115 off_t minsize; /* minimum size image should be */ 116 off_t maxsize; /* maximum size image can be */ 117 off_t freefiles; /* free file entries to leave */ 118 int freefilepc; /* free file % */ 119 off_t freeblocks; /* free blocks to leave */ 120 int freeblockpc; /* free block % */ 121 int needswap; /* non-zero if byte swapping needed */ 122 int sectorsize; /* sector size */ 123 124 /* ffs specific options */ 125 int bsize; /* block size */ 126 int fsize; /* fragment size */ 127 int cpg; /* cylinders per group */ 128 int density; /* bytes per inode */ 129 int ntracks; /* number of tracks */ 130 int nsectors; /* number of sectors */ 131 int rpm; /* rpm */ 132 int minfree; /* free space threshold */ 133 int optimization; /* optimization (space or time) */ 134 int maxcontig; /* max contiguous blocks to allocate */ 135 int rotdelay; /* rotational delay between blocks */ 136 int maxbpg; /* maximum blocks per file in a cyl group */ 137 int nrpos; /* # of distinguished rotational positions */ 138 int avgfilesize; /* expected average file size */ 139 int avgfpdir; /* expected # of files per directory */ 140 /* XXX: support `old' file systems ? */ 141 } fsinfo_t; 142 143 144 /* 145 * option_t - contains option name, description, pointer to location to store 146 * result, and range checks for the result. Used to simplify fs specific 147 * option setting 148 */ 149 typedef struct { 150 const char *name; /* option name */ 151 int *value; /* where to stuff the value */ 152 int minimum; /* minimum for value */ 153 int maximum; /* maximum for value */ 154 const char *desc; /* option description */ 155 } option_t; 156 157 158 void apply_specfile(const char *, const char *, fsnode *); 159 void dump_fsnodes(const char *, fsnode *); 160 const char * inode_type(mode_t); 161 int set_option(option_t *, const char *, const char *); 162 fsnode * walk_dir(const char *, fsnode *); 163 164 int ffs_parse_opts(const char *, fsinfo_t *); 165 void ffs_makefs(const char *, const char *, fsnode *, fsinfo_t *); 166 167 168 169 extern uint debug; 170 extern struct timespec start_time; 171 172 #define DEBUG_TIME 0x00000001 173 /* debug bits 1..3 unused at this time */ 174 #define DEBUG_WALK_DIR 0x00000010 175 #define DEBUG_WALK_DIR_NODE 0x00000020 176 #define DEBUG_WALK_DIR_LINKCHECK 0x00000040 177 #define DEBUG_DUMP_FSNODES 0x00000080 178 #define DEBUG_DUMP_FSNODES_VERBOSE 0x00000100 179 #define DEBUG_FS_PARSE_OPTS 0x00000200 180 #define DEBUG_FS_MAKEFS 0x00000400 181 #define DEBUG_FS_VALIDATE 0x00000800 182 #define DEBUG_FS_CREATE_IMAGE 0x00001000 183 #define DEBUG_FS_SIZE_DIR 0x00002000 184 #define DEBUG_FS_SIZE_DIR_NODE 0x00004000 185 #define DEBUG_FS_SIZE_DIR_ADD_DIRENT 0x00008000 186 #define DEBUG_FS_POPULATE 0x00010000 187 #define DEBUG_FS_POPULATE_DIRBUF 0x00020000 188 #define DEBUG_FS_POPULATE_NODE 0x00040000 189 #define DEBUG_FS_WRITE_FILE 0x00080000 190 #define DEBUG_FS_WRITE_FILE_BLOCK 0x00100000 191 #define DEBUG_FS_MAKE_DIRBUF 0x00200000 192 #define DEBUG_FS_WRITE_INODE 0x00400000 193 #define DEBUG_BUF_BREAD 0x00800000 194 #define DEBUG_BUF_BWRITE 0x01000000 195 #define DEBUG_BUF_GETBLK 0x02000000 196 #define DEBUG_APPLY_SPECFILE 0x04000000 197 #define DEBUG_APPLY_SPECENTRY 0x08000000 198 199 200 #define TIMER_START(x) \ 201 if (debug & DEBUG_TIME) \ 202 gettimeofday(&(x), NULL) 203 204 #define TIMER_RESULTS(x,d) \ 205 if (debug & DEBUG_TIME) { \ 206 struct timeval end, td; \ 207 gettimeofday(&end, NULL); \ 208 timersub(&end, &(x), &td); \ 209 printf("%s took %ld.%06ld seconds\n", \ 210 (d), td.tv_sec, td.tv_usec); \ 211 } 212 213 214 #ifndef DEFAULT_FSTYPE 215 #define DEFAULT_FSTYPE "ffs" 216 #endif 217
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