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 1.22 2004/01/27 10:15:37 stelian Exp $
   9  */
  10
  11 #include <config.h>
  12 #include <sys/time.h>
  13 #include <dirent.h>
  14
  15 #define __dead          volatile
  16 #define UNUSED(x)       x __attribute__ ((unused))
  17
  18 #ifndef NBBY
  19 #define NBBY            8
  20 #endif
  21
  22 #ifndef MIN
  23 #define MIN(a,b)        ((a < b) ? a : b)
  24 #endif
  25
  26 #define WINO            1
  27 #define DEV_BSIZE       512
  28 #define DEV_BSHIFT      9
  29
  30 #ifndef sunos
  31 #define MAXBSIZE        EXT2_MAX_BLOCK_SIZE
  32 #define ROOTINO         EXT2_ROOT_INO
  33 #else
  34 #define ROOTINO         2
  35 #endif
  36 #ifdef  EXT2_NODUMP_FL
  37 #define UF_NODUMP       EXT2_NODUMP_FL
  38 #endif
  39
  40 #ifndef howmany
  41 #define howmany(x,y)    (((x)+((y)-1))/(y))
  42 #endif
  43 #ifndef roundup
  44 #define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
  45 #endif
  46 #ifndef powerof2
  47 #define powerof2(x)     ((((x)-1)&(x))==0)
  48 #endif
  49
  50 #define fsbtodb(sb,b)   ((int)(((long long)(b) * EXT2_BLOCK_SIZE((sb)->super)) / DEV_BSIZE))
  51 #define dbtofsb(sb,b)   ((int)(((long long)(b) * DEV_BSIZE) / EXT2_BLOCK_SIZE((sb)->super)))
  52
  53 #define sblock          fs
  54 #define fs_fsize        fragsize
  55 #define fs_bsize        blocksize
  56 #define fs_size         super->s_blocks_count
  57
  58 #define IFMT            S_IFMT
  59 #define IFLNK           S_IFLNK
  60 #define IFREG           S_IFREG
  61 #define IFDIR           S_IFDIR
  62 #define IFCHR           S_IFCHR
  63 #define IFBLK           S_IFBLK
  64 #define IFSOCK          S_IFSOCK
  65 #define IFIFO           S_IFIFO
  66
  67 #if 0
  68 typedef __s64           quad_t;
  69 typedef __u64           u_quad_t;
  70 #endif
  71
  72 /*
  73  * The BSD dump format reserves 4 bytes for a time_t, but other architectures
  74  * (notably axp) have larger time_t.  ctime4() is a modified ctime() which
  75  * always accepts short 4-byte times.
  76  */
  77 #define ctime4(timep) ({ time_t t = *(timep); ctime(&t); })
  78
  79 /*
  80  * This is the ext2_inode structure but the fields have been renamed
  81  * to match 4.4BSD's names
  82  */
  83 #define NDADDR          12
  84 #define NIADDR           3
  85
  86 #define NINDIR(fs)      EXT2_ADDR_PER_BLOCK(fs->super)
  87
  88 #ifdef sunos
  89 typedef uint8_t __u8;
  90 typedef uint16_t __u16;
  91 typedef uint32_t __u32;
  92 typedef int8_t __s8;
  93 typedef int16_t __s16;
  94 typedef int32_t __s32;
  95 #ifndef u_int
  96 typedef unsigned int u_int;
  97 #endif
  98 #ifndef u_int16_t
  99 typedef unsigned short u_int16_t;
 100 #endif
 101 #ifndef u_char
 102 typedef unsigned char u_char;
 103 #endif
 104 typedef int64_t quad_t;
 105 #endif /* sunos */
 106
 107 struct dinode {
 108         __u16   di_mode;
 109         __u16   di_uid;
 110         __u32   di_size;
 111         __u32   di_atime;
 112         __u32   di_ctime;
 113         __u32   di_mtime;
 114         __u32   di_dtime;
 115         __u16   di_gid;
 116         __u16   di_nlink;
 117         __u32   di_blocks;
 118         __u32   di_flags;
 119         __u32   di_reserved1;
 120         daddr_t di_db[NDADDR];
 121         daddr_t di_ib[NIADDR];
 122         __u32   di_gen;
 123         __u32   di_file_acl;
 124         __u32   di_dir_acl;
 125         __u32   di_faddr;
 126         __u8    di_frag;
 127         __u8    di_fsize;
 128         __u16   di_pad1;
 129         __u16   di_uidhigh;
 130         __u16   di_gidhigh;
 131         __u32   di_spare;
 132 };
 133
 134 #define di_rdev         di_db[0]
 135 /* #define di_ouid              di_uid */
 136 /* #define di_ogid              di_gid */
 137 #define di_size_high    di_dir_acl
 138
 139 /*
 140  * This is the ext2_dir_entry structure but the fields have been renamed
 141  * to match 4.4BSD's names
 142  *
 143  * This is the 4.4BSD directory entry structure
 144  */
 145 #define DIRBLKSIZ       DEV_BSIZE
 146 #ifndef MAXNAMLEN
 147 #define MAXNAMLEN       255
 148 #endif
 149
 150 #ifdef sunos
 151 #define MAXNAMLEN       255
 152 #endif
 153
 154 /*
 155  * For old libc.
 156  */
 157 #ifndef DT_UNKNOWN
 158 #define DT_UNKNOWN       0
 159 #define DT_FIFO          1
 160 #define DT_CHR           2
 161 #define DT_DIR           4
 162 #define DT_BLK           6
 163 #define DT_REG           8
 164 #define DT_LNK          10
 165 #define DT_SOCK         12
 166
 167 #ifdef sunos
 168 #define DT_WHT          14
 169 #endif
 170 #endif
 171
 172 #ifndef d_fileno
 173 #define d_fileno d_ino
 174 #endif
 175
 176 /*
 177  * The direct structure used by dump/restore.
 178  */
 179 struct direct {
 180         __u32   d_ino;
 181         __u16   d_reclen;
 182         __u8    d_type;
 183         __u8    d_namlen;
 184         char    d_name[MAXNAMLEN + 1];
 185 };
 186 /*
 187  * Convert between stat structure types and directory types.
 188  */
 189 #define IFTODT(mode)    (((mode) & 0170000) >> 12)
 190 #define DTTOIF(dirtype) ((dirtype) << 12)
 191
 192 /*
 193  * The DIRSIZ macro gives the minimum record length which will hold
 194  * the directory entry.  This requires the amount of space in struct direct
 195  * without the d_name field, plus enough space for the name with a terminating
 196  * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary.
 197  */
 198 #ifdef __linux__
 199 #if     0
 200 #if (BYTE_ORDER == LITTLE_ENDIAN)
 201 #define DIRSIZ(oldfmt, dp) \
 202     ((oldfmt) ? \
 203     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_type+1 + 3) &~ 3)) : \
 204     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)))
 205 #else /* BYTE_ORDER */
 206 #define DIRSIZ(oldfmt, dp) \
 207     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
 208 #endif
 209 #else /* 0 */
 210 #define DIRSIZ(oldfmt,dp)       EXT2_DIR_REC_LEN(((dp)->d_namlen & 0xff) + 1)
 211 #endif
 212 #else /* __linux__ */
 213 #define DIRSIZ(oldfmt, dp) \
 214         ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
 215 #endif
 216
 217 /*
 218  * This is the old (Net/2) BSD inode structure
 219  * copied from the FreeBSD 1.1.5.1 <ufs/dinode.h> include file
 220  */
 221 #define MAXFASTLINK     (((NDADDR + NIADDR) * sizeof(unsigned long)) - 1)
 222
 223 struct old_bsd_inode {
 224         __u16           di_mode;
 225         __s16           di_nlink;
 226         __u16           di_uid;
 227         __u16           di_gid;
 228 #if     1
 229         union {
 230                 u_quad_t        v;
 231                 __u32           val[2];
 232         }               di_qsize;
 233 #else
 234         u_quad_t        di_size;
 235 #endif
 236         __u32           di_atime;
 237         __s32           di_atspare;
 238         __u32           di_mtime;
 239         __s32           di_mtspare;
 240         __u32           di_ctime;
 241         __s32           di_ctspare;
 242 #if     0
 243         union {
 244                 struct {
 245                         daddr_t di_udb[NDADDR];
 246                         daddr_t di_uib[NIADDR];
 247                 } di_addr;
 248                 char    di_usymlink[MAXFASTLINK + 1];
 249         }               di_un;
 250 #else
 251         daddr_t         di_db[NDADDR];
 252         daddr_t         di_ib[NIADDR];
 253 #endif
 254         __s32           di_flags;
 255         __s32           di_blocks;
 256         __s32           di_gen;
 257         __u32           di_spare[4];
 258 };
 259
 260 struct bsdtimeval {    /* XXX alpha-*-linux is deviant */
 261         __u32   tv_sec;
 262         __u32   tv_usec;
 263 };
 264
 265 /*
 266  * This is the new (4.4) BSD inode structure
 267  * copied from the FreeBSD 2.0 <ufs/ufs/dinode.h> include file
 268  */
 269 struct new_bsd_inode {
 270         __u16           di_mode;
 271         __s16           di_nlink;
 272         union {
 273                 __u16           oldids[2];
 274                 __u32           inumber;
 275         }               di_u;
 276         u_quad_t        di_size;
 277         struct bsdtimeval       di_atime;
 278         struct bsdtimeval       di_mtime;
 279         struct bsdtimeval       di_ctime;
 280         daddr_t         di_db[NDADDR];
 281         daddr_t         di_ib[NIADDR];
 282         __u32           di_flags;
 283         __s32           di_blocks;
 284         __s32           di_gen;
 285         __u32           di_uid;
 286         __u32           di_gid;
 287         __s32           di_spare[2];
 288 };
 289
 290 #define di_ouid         di_u.oldids[0]
 291 #define di_ogid         di_u.oldids[1]