LFS_BMAPV(2) 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 re- turned 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 struc- tures (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. NetBSD 5.0 May 23, 2000 LFS_BMAPV(2)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | HISTORY
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