LFS_BMAPV(2)						      BSD System Calls Manual						      LFS_BMAPV(2)

NAME

     lfs_bmapv -- retrieve disk addresses for arrays of blocks

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

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

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

DESCRIPTION

     lfs_bmapv() fills in the bi_daddr field for every block listed in the block array blkiov with the disk address corresponding 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 file system 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

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

ERRORS

     An error return from lfs_bmapv() indicates:

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

     [EINVAL]		*fsidp does not specify a valid file system.

SEE ALSO

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

HISTORY

     The lfs_bmapv() function call appeared in 4.4BSD.

BSD
								   May 23, 2000 							       BSD