NAME    [Toc]    [Back]

     lfs_bmapv - retrieve disk addresses for arrays of blocks

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <sys/types.h>
     #include <ufs/lfs/lfs.h>

     int
     lfs_bmapv(fsid_t *fsidp, BLOCK_INFO *blkiov, int blkcnt);

DESCRIPTION    [Toc]    [Back]

     lfs_bmapv() fills in the bi_daddr field for every block listed in the
     block array blkiov with the disk address corrseponding to the logical
     block bi_lbn of the file with inode bi_inode.  If bi_lbn is
     LFS_UNUSED_LBN, the disk location of the inode block containing the
     file's inode will be returned in bi_daddr instead.

     The fsidp argument contains the id of the filesystem to which the inodes
     and blocks belong.  The blkiov argument is an array of BLOCK_INFO structures
 (see below).  The blkcnt argument determines the size of the blkiov
     array.

     typedef struct block_info {
         ino_t       bi_inode;     /* inode # */
         ufs_daddr_t bi_lbn;       /* logical block w/in file */
         ufs_daddr_t bi_daddr;     /* disk address of block */
         time_t      bi_segcreate; /* origin segment create time */
         int         bi_version;   /* file version number */
         void       *bi_bp;        /* data buffer */
         int         bi_size;      /* size of the block (if fragment) */
     } BLOCK_INFO;

RETURN VALUES    [Toc]    [Back]

     lfs_bmapv() returns 0 on success, or -1 on error.

ERRORS    [Toc]    [Back]

     An error return from lfs_bmapv() indicates:

     [EFAULT]           fsidp points outside the process's allocated address
                        space.

     [EINVAL]           *fsidp does not specify a valid filesystem.

SEE ALSO    [Toc]    [Back]

     lfs_markv(2), lfs_segclean(2), lfs_segwait(2), lfs_cleanerd(8)

HISTORY    [Toc]    [Back]

     The lfs_bmapv() function call appeared in 4.4BSD.

BSD                              May 23, 2000                              BSD