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 <pop@cybercable.fr>, 1999
   6  *
   7  */
   8
   9 #include <config.h>
  10 #include <sys/time.h>
  11
  12 #define __dead          volatile
  13
  14 #ifndef NBBY
  15 #define NBBY            8
  16 #endif
  17
  18 #ifndef MIN
  19 #define MIN(a,b)        ((a < b) ? a : b)
  20 #endif
  21
  22 #define WINO            ((ino_t)1)
  23 #define DEV_BSIZE       512
  24 #define DEV_BSHIFT      9
  25 #define MAXBSIZE        EXT2_MAX_BLOCK_SIZE
  26 #define ROOTINO         EXT2_ROOT_INO
  27 #ifdef  EXT2_NODUMP_FL
  28 #define UF_NODUMP       EXT2_NODUMP_FL
  29 #endif
  30
  31 #define howmany(x,y)    (((x)+((y)-1))/(y))
  32 #define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
  33 #define powerof2(x)     ((((x)-1)&(x))==0)
  34
  35 #define dbtob(b)        ((unsigned)(b) << DEV_BSHIFT)
  36 #define fsbtodb(sb,b)   ((int)(((long long)b * EXT2_BLOCK_SIZE(sb->super)) / DEV_BSIZE))
  37
  38 #define sblock          fs
  39 #define fs_fsize        fragsize
  40 #define fs_bsize        blocksize
  41 #define fs_size         super->s_blocks_count
  42
  43 #define IFMT            S_IFMT
  44 #define IFLNK           S_IFLNK
  45 #define IFREG           S_IFREG
  46 #define IFDIR           S_IFDIR
  47 #define IFCHR           S_IFCHR
  48 #define IFBLK           S_IFBLK
  49 #define IFSOCK          S_IFSOCK
  50 #define IFIFO           S_IFIFO
  51
  52 #if 0
  53 typedef __s64           quad_t;
  54 typedef __u64           u_quad_t;
  55 #endif
  56
  57 /*
  58  * The BSD dump format reserves 4 bytes for a time_t, but other architectures
  59  * (notably axp) have larger time_t.  ctime4() is a modified ctime() which
  60  * always accepts short 4-byte times.  time4() is a similarly modified time().
  61  */
  62 #define ctime4(timep) ({ time_t t = *(timep); ctime(&t); })
  63 #define time4(timep) ({time_t t; t = time(0); if (timep) *timep=t; t; })
  64
  65 /*
  66  * This is the ext2_inode structure but the fields have been renamed
  67  * to match 4.4BSD's names
  68  */
  69 #define NDADDR          12
  70 #define NIADDR           3
  71
  72 #define NINDIR(fs)      EXT2_ADDR_PER_BLOCK(fs->super)
  73
  74 struct dinode {
  75         __u16   di_mode;
  76         __u16   di_uid;
  77         __u32   di_size;
  78         __u32   di_atime;
  79         __u32   di_ctime;
  80         __u32   di_mtime;
  81         __u32   di_dtime;
  82         __u16   di_gid;
  83         __u16   di_nlink;
  84         __u32   di_blocks;
  85         __u32   di_flags;
  86         __u32   di_reserved1;
  87         daddr_t di_db[NDADDR];
  88         daddr_t di_ib[NIADDR];
  89         __u32   di_gen;
  90         __u32   di_file_acl;
  91         __u32   di_dir_acl;
  92         __u32   di_faddr;
  93         __u8    di_frag;
  94         __u8    di_fsize;
  95         __u16   di_pad1;
  96         __u32   di_spare[2];
  97 };
  98
  99 #define di_rdev         di_db[0]
 100 /* #define di_ouid              di_uid */
 101 /* #define di_ogid              di_gid */
 102
 103 /*
 104  * This is the ext2_dir_entry structure but the fields have been renamed
 105  * to match 4.4BSD's names
 106  *
 107  * This is the 4.4BSD directory entry structure
 108  */
 109 #define DIRBLKSIZ       DEV_BSIZE
 110 #define MAXNAMLEN       255
 111
 112 struct direct {
 113         __u32   d_ino;
 114         __u16   d_reclen;
 115 #if 1
 116         __u8    d_namlen;
 117         __u8    d_type;
 118 #else
 119         __u16   d_namlen;
 120 #endif
 121         char            d_name[MAXNAMLEN + 1];
 122 };
 123
 124 /*
 125  * File types
 126  */
 127 #define DT_UNKNOWN       0
 128 #define DT_FIFO          1
 129 #define DT_CHR           2
 130 #define DT_DIR           4
 131 #define DT_BLK           6
 132 #define DT_REG           8
 133 #define DT_LNK          10
 134 #define DT_SOCK         12
 135 #define DT_WHT          14
 136
 137 /*
 138  * Convert between stat structure types and directory types.
 139  */
 140 #define IFTODT(mode)    (((mode) & 0170000) >> 12)
 141 #define DTTOIF(dirtype) ((dirtype) << 12)
 142
 143 /*
 144  * The DIRSIZ macro gives the minimum record length which will hold
 145  * the directory entry.  This requires the amount of space in struct direct
 146  * without the d_name field, plus enough space for the name with a terminating
 147  * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary.
 148  */
 149 #if     0
 150 #if (BYTE_ORDER == LITTLE_ENDIAN)
 151 #define DIRSIZ(oldfmt, dp) \
 152     ((oldfmt) ? \
 153     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_type+1 + 3) &~ 3)) : \
 154     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3)))
 155 #else
 156 #define DIRSIZ(oldfmt, dp) \
 157     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
 158 #endif
 159 #else
 160
 161 #define DIRSIZ(oldfmt,dp)       EXT2_DIR_REC_LEN(((dp)->d_namlen & 0xff) + 1)
 162
 163 #endif
 164
 165 /*
 166  * This is the old (Net/2) BSD inode structure
 167  * copied from the FreeBSD 1.1.5.1 <ufs/dinode.h> include file
 168  */
 169 #define MAXFASTLINK     (((NDADDR + NIADDR) * sizeof(unsigned long)) - 1)
 170
 171 struct old_bsd_inode {
 172         __u16           di_mode;
 173         __s16           di_nlink;
 174         __u16           di_uid;
 175         __u16           di_gid;
 176 #if     1
 177         union {
 178                 u_quad_t        v;
 179                 __u32           val[2];
 180         }               di_qsize;
 181 #else
 182         u_quad_t        di_size;
 183 #endif
 184         __u32           di_atime;
 185         __s32           di_atspare;
 186         __u32           di_mtime;
 187         __s32           di_mtspare;
 188         __u32           di_ctime;
 189         __s32           di_ctspare;
 190 #if     0
 191         union {
 192                 struct {
 193                         daddr_t di_udb[NDADDR];
 194                         daddr_t di_uib[NIADDR];
 195                 } di_addr;
 196                 char    di_usymlink[MAXFASTLINK + 1];
 197         }               di_un;
 198 #else
 199         daddr_t         di_db[NDADDR];
 200         daddr_t         di_ib[NIADDR];
 201 #endif
 202         __s32           di_flags;
 203         __s32           di_blocks;
 204         __s32           di_gen;
 205         __u32           di_spare[4];
 206 };
 207
 208 /*
 209  * This is the new (4.4) BSD inode structure
 210  * copied from the FreeBSD 2.0 <ufs/ufs/dinode.h> include file
 211  */
 212 struct new_bsd_inode {
 213         __u16           di_mode;
 214         __s16           di_nlink;
 215         union {
 216                 __u16           oldids[2];
 217                 __u32           inumber;
 218         }               di_u;
 219         u_quad_t        di_size;
 220         struct timeval  di_atime;
 221         struct timeval  di_mtime;
 222         struct timeval  di_ctime;
 223         daddr_t         di_db[NDADDR];
 224         daddr_t         di_ib[NIADDR];
 225         __u32           di_flags;
 226         __s32           di_blocks;
 227         __s32           di_gen;
 228         __u32           di_uid;
 229         __u32           di_gid;
 230         __s32           di_spare[2];
 231 };
 232
 233 #define di_ouid         di_u.oldids[0]
 234 #define di_ogid         di_u.oldids[1]