1 /* 2 * Copyright (c) 2002 Juli Mallett. All rights reserved. 3 * 4 * This software was written by Juli Mallett <jmallett@FreeBSD.org> for the 5 * FreeBSD project. Redistribution and use in source and binary forms, with 6 * or without modification, are permitted provided that the following 7 * conditions are met: 8 * 9 * 1. Redistribution of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 2. Redistribution in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef __LIBUFS_H__ 31 #define __LIBUFS_H__ 32 33 /* 34 * libufs macros (internal, non-exported). 35 */ 36 #ifdef _LIBUFS 37 #ifdef _LIBUFS_DEBUGGING 38 /* 39 * Trace steps through libufs, to be used at entry and erroneous return. 40 */ 41 #define ERROR(uufsd, str) \ 42 do { \ 43 fprintf(stderr, "libufs in %s", __func__); \ 44 if (str != NULL) \ 45 fprintf(stderr, ": %s", str); \ 46 if (errno) \ 47 fprintf(stderr, ": %s", strerror(errno)); \ 48 fprintf(stderr, "\n"); \ 49 if ((uufsd) != NULL) \ 50 (uufsd)->d_error = str; \ 51 } while (0) 52 #else /* _LIBUFS_DEBUGGING */ 53 #define ERROR(uufsd, str) \ 54 do { \ 55 if ((uufsd) != NULL) \ 56 (uufsd)->d_error = str; \ 57 } while (0) 58 #endif /* _LIBUFS_DEBUGGING */ 59 #endif /* _LIBUFS */ 60 61 /* 62 * libufs structures. 63 */ 64 65 /* 66 * userland ufs disk. 67 */ 68 struct uufsd { 69 const char *d_name; /* disk name */ 70 int d_ufs; /* decimal UFS version */ 71 int d_fd; /* raw device file descriptor */ 72 long d_bsize; /* device bsize */ 73 ufs2_daddr_t d_sblock; /* superblock location */ 74 caddr_t d_inoblock; /* inode block */ 75 ino_t d_inomin; /* low inode */ 76 ino_t d_inomax; /* high inode */ 77 union { 78 struct fs d_fs; /* filesystem information */ 79 char d_sb[MAXBSIZE]; 80 /* superblock as buffer */ 81 } d_sbunion; 82 union { 83 struct cg d_cg; /* cylinder group */ 84 char d_buf[MAXBSIZE]; 85 /* cylinder group storage */ 86 } d_cgunion; 87 int d_ccg; /* current cylinder group */ 88 int d_lcg; /* last cylinder group (in d_cg) */ 89 const char *d_error; /* human readable disk error */ 90 int d_mine; /* internal flags */ 91 #define d_fs d_sbunion.d_fs 92 #define d_sb d_sbunion.d_sb 93 #define d_cg d_cgunion.d_cg 94 }; 95 96 __BEGIN_DECLS 97 98 /* 99 * libufs prototypes. 100 */ 101 102 /* 103 * block.c 104 */ 105 ssize_t bread(struct uufsd *, ufs2_daddr_t, void *, size_t); 106 ssize_t bwrite(struct uufsd *, ufs2_daddr_t, const void *, size_t); 107 int berase(struct uufsd *, ufs2_daddr_t, ufs2_daddr_t); 108 109 /* 110 * cgroup.c 111 */ 112 int cgread(struct uufsd *); 113 int cgread1(struct uufsd *, int); 114 int cgwrite1(struct uufsd *, int); 115 116 /* 117 * inode.c 118 */ 119 int getino(struct uufsd *, void **, ino_t, int *); 120 121 /* 122 * sblock.c 123 */ 124 int sbread(struct uufsd *); 125 int sbwrite(struct uufsd *, int); 126 127 /* 128 * type.c 129 */ 130 int ufs_disk_close(struct uufsd *); 131 int ufs_disk_fillout(struct uufsd *, const char *); 132 int ufs_disk_fillout_blank(struct uufsd *, const char *); 133 int ufs_disk_write(struct uufsd *); 134 135 __END_DECLS 136 137 #endif /* __LIBUFS_H__ */ 138