compat/include/bsdcompat.h

   1 /*
   2  *      Ported to Linux's Second Extended File System as part of the
   3  *      dump and restore backup suit
   4  *      Remy Card <card@Linux.EU.Org>, 1994-1997
   5  *      Stelian Pop <stelian@popies.net>, 1999-2000
   6  *      Stelian Pop <stelian@popies.net> - Alcôve <www.alcove.com>, 2000-2002
   7  *
   8  *      $Id: bsdcompat.h,v 1.24 2005/05/02 15:10:45 stelian Exp $
   9  */
  10
  11 #include <config.h>
  12 #include <sys/time.h>
  13 #include <dirent.h>
  14 #include <ext2fs/ext2fs.h>
  15
  16 #define __dead          volatile
  17 #define UNUSED(x)       x __attribute__ ((unused))
  18
  19 #ifndef NBBY
  20 #define NBBY            8
  21 #endif
  22
  23 #ifndef MIN
  24 #define MIN(a,b)        ((a < b) ? a : b)
  25 #endif
  26
  27 #define WINO            1
  28 #define DEV_BSIZE       512
  29 #define DEV_BSHIFT      9
  30
  31 #ifndef sunos
  32 #define MAXBSIZE        EXT2_MAX_BLOCK_SIZE
  33 #define ROOTINO         EXT2_ROOT_INO
  34 #else
  35 #define ROOTINO         2
  36 #endif
  37 #ifdef  EXT2_NODUMP_FL
  38 #define UF_NODUMP       EXT2_NODUMP_FL
  39 #endif
  40
  41 #ifndef howmany
  42 #define howmany(x,y)    (((x)+((y)-1))/(y))
  43 #endif
  44 #ifndef roundup
  45 #define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
  46 #endif
  47 #ifndef powerof2
  48 #define powerof2(x)     ((((x)-1)&(x))==0)
  49 #endif
  50
  51 #define fsbtodb(sb,b)   ((ext2_loff_t)(((long long)(b) * EXT2_BLOCK_SIZE((sb)->super)) / DEV_BSIZE))
  52 #define dbtofsb(sb,b)   ((int)(((long long)(b) * DEV_BSIZE) / EXT2_BLOCK_SIZE((sb)->super)))
  53
  54 #define sblock          fs
  55 #define fs_fsize        fragsize
  56 #define fs_bsize        blocksize
  57 #define fs_size         super->s_blocks_count
  58
  59 #define IFMT            S_IFMT
  60 #define IFLNK           S_IFLNK
  61 #define IFREG           S_IFREG
  62 #define IFDIR           S_IFDIR
  63 #define IFCHR           S_IFCHR
  64 #define IFBLK           S_IFBLK
  65 #define IFSOCK          S_IFSOCK
  66 #define IFIFO           S_IFIFO
  67
  68 #if 0
  69 typedef __s64           quad_t;
  70 typedef __u64           u_quad_t;
  71 #endif
  72
  73 /*
  74  * The BSD dump format reserves 4 bytes for a time_t, but other architectures
  75  * (notably axp) have larger time_t.  ctime4() is a modified ctime() which
  76  * always accepts short 4-byte times.
  77  */
  78 #define ctime4(timep) ({ time_t t = *(timep); ctime(&t); })
  79
  80 /*
  81  * This is the ext2_inode structure but the fields have been renamed
  82  * to match 4.4BSD's names
  83  */
  84 #define NDADDR          12
  85 #define NIADDR           3
  86
  87 #define NINDIR(fs)      EXT2_ADDR_PER_BLOCK(fs->super)
  88
  89 #ifdef sunos
  90 typedef uint8_t __u8;
  91 typedef uint16_t __u16;
  92 typedef uint32_t __u32;
  93 typedef int8_t __s8;
  94 typedef int16_t __s16;
  95 typedef int32_t __s32;
  96 #ifndef u_int
  97 typedef unsigned int u_int;
  98 #endif
  99 #ifndef u_int16_t
 100 typedef unsigned short u_int16_t;
 101 #endif
 102 #ifndef u_char
 103 typedef unsigned char u_char;
 104 #endif
 105 typedef int64_t quad_t;
 106 #endif /* sunos */
 107
 108 struct dinode {
 109         __u16   di_mode;
 110         __u16   di_uid;
 111         __u32   di_size;
 112         __u32   di_atime;
 113         __u32   di_ctime;
 114         __u32   di_mtime;
 115         __u32   di_dtime;
 116         __u16   di_gid;
 117         __u16   di_nlink;
 118         __u32   di_blocks;
 119         __u32   di_flags;
 120         __u32   di_reserved1;
 121         __u32   di_db[NDADDR];
 122         __u32   di_ib[NIADDR];
 123         __u32   di_gen;
 124         __u32   di_file_acl;
 125         __u32   di_dir_acl;
 126         __u32   di_faddr;
 127         __u8    di_frag;
 128         __u8    di_fsize;
 129         __u16   di_pad1;
 130         __u16   di_uidhigh;
 131         __u16   di_gidhigh;
 132         __u32   di_spare;
 133         __u16   di_extraisize;
 134         __u16   di_pad2;
 135 };
 136
 137 #define di_rdev         di_db[0]
 138 /* #define di_ouid              di_uid */
 139 /* #define di_ogid              di_gid */
 140 #define di_size_high    di_dir_acl
 141
 142 /*
 143  * This is the ext2_dir_entry structure but the fields have been renamed
 144  * to match 4.4BSD's names
 145  *
 146  * This is the 4.4BSD directory entry structure
 147  */
 148 #define DIRBLKSIZ       DEV_BSIZE
 149 #ifndef MAXNAMLEN
 150 #define MAXNAMLEN       255
 151 #endif
 152
 153 #ifdef sunos
 154 #define MAXNAMLEN       255
 155 #endif
 156
 157 /*
 158  * For old libc.
 159  */
 160 #ifndef DT_UNKNOWN
 161 #define DT_UNKNOWN       0
 162 #define DT_FIFO          1
 163 #define DT_CHR           2
 164 #define DT_DIR           4
 165 #define DT_BLK           6
 166 #define DT_REG           8
 167 #define DT_LNK          10
 168 #define DT_SOCK         12
 169
 170 #ifdef sunos
 171 #define DT_WHT          14
 172 #endif
 173 #endif
 174
 175 #ifndef d_fileno
 176 #define d_fileno d_ino
 177 #endif
 178
 179 /*
 180  * The direct structure used by dump/restore.
 181  */
 182 struct direct {
 183         __u32   d_ino;
 184         __u16   d_reclen;
 185         __u8    d_type;
 186         __u8    d_namlen;
 187         char    d_name[MAXNAMLEN + 1];
 188 };
 189 /*
 190  * Convert between stat structure types and directory types.
 191  */
 192 #define IFTODT(mode)    (((mode) & 0170000) >> 12)
 193 #define DTTOIF(dirtype) ((dirtype) << 12)
 194
 195 /*
 196  * The DIRSIZ macro gives the minimum record length which will hold
 197  * the directory entry.  This requires the amount of space in struct direct
 198  * without the d_name field, plus enough space for the name with a terminating
 199  * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary.
 200  */
 201 #ifdef __linux__
 202 #if     0
 203 #if (BYTE_ORDER == LITTLE_ENDIAN)
 204 #define DIRSIZ(oldfmt, dp) \
 205     ((oldfmt) ? \
 206     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_type+1 + 3) &~ 3)) : \
 207     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)))
 208 #else /* BYTE_ORDER */
 209 #define DIRSIZ(oldfmt, dp) \
 210     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
 211 #endif
 212 #else /* 0 */
 213 #define DIRSIZ(oldfmt,dp)       EXT2_DIR_REC_LEN(((dp)->d_namlen & 0xff) + 1)
 214 #endif
 215 #else /* __linux__ */
 216 #define DIRSIZ(oldfmt, dp) \
 217         ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
 218 #endif
 219
 220 /*
 221  * This is the old (Net/2) BSD inode structure
 222  * copied from the FreeBSD 1.1.5.1 <ufs/dinode.h> include file
 223  */
 224 #define MAXFASTLINK     (((NDADDR + NIADDR) * sizeof(unsigned long)) - 1)
 225
 226 struct old_bsd_inode {
 227         __u16           di_mode;
 228         __s16           di_nlink;
 229         __u16           di_uid;
 230         __u16           di_gid;
 231 #if     1
 232         union {
 233                 u_quad_t        v;
 234                 __u32           val[2];
 235         }               di_qsize;
 236 #else
 237         u_quad_t        di_size;
 238 #endif
 239         __u32           di_atime;
 240         __s32           di_atspare;
 241         __u32           di_mtime;
 242         __s32           di_mtspare;
 243         __u32           di_ctime;
 244         __s32           di_ctspare;
 245 #if     0
 246         union {
 247                 struct {
 248                         daddr_t di_udb[NDADDR];
 249                         daddr_t di_uib[NIADDR];
 250                 } di_addr;
 251                 char    di_usymlink[MAXFASTLINK + 1];
 252         }               di_un;
 253 #else
 254         __u32           di_db[NDADDR];
 255         __u32           di_ib[NIADDR];
 256 #endif
 257         __s32           di_flags;
 258         __s32           di_blocks;
 259         __s32           di_gen;
 260         __u32           di_spare[4];
 261 };
 262
 263 struct bsdtimeval {    /* XXX alpha-*-linux is deviant */
 264         __u32   tv_sec;
 265         __u32   tv_usec;
 266 };
 267
 268 /*
 269  * This is the new (4.4) BSD inode structure
 270  * copied from the FreeBSD 2.0 <ufs/ufs/dinode.h> include file
 271  */
 272 struct new_bsd_inode {
 273         __u16           di_mode;
 274         __s16           di_nlink;
 275         union {
 276                 __u16           oldids[2];
 277                 __u32           inumber;
 278         }               di_u;
 279         u_quad_t        di_size;
 280         struct bsdtimeval       di_atime;
 281         struct bsdtimeval       di_mtime;
 282         struct bsdtimeval       di_ctime;
 283         __u32           di_db[NDADDR];
 284         __u32           di_ib[NIADDR];
 285         __u32           di_flags;
 286         __s32           di_blocks;
 287         __s32           di_gen;
 288         __u32           di_uid;
 289         __u32           di_gid;
 290         __s32           di_spare[2];
 291 };
 292
 293 #define di_ouid         di_u.oldids[0]
 294 #define di_ogid         di_u.oldids[1]