/*
* Read a directory.
*/
int
xfs_readdir(
xfs_inode_t *dp,
void *dirent,
size_t bufsize,
xfs_off_t *offset,
filldir_t filldir)
{
int rval; /* return value */
int v; /* type-checking value */
trace_xfs_readdir(dp);
if (XFS_FORCED_SHUTDOWN(dp->i_mount))
return XFS_ERROR(EIO);
ASSERT(S_ISDIR(dp->i_d.di_mode));
XFS_STATS_INC(xs_dir_getdents);
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_getdents(dp, dirent, offset, filldir);
else if ((rval = xfs_dir2_isblock(NULL, dp, &v)))
;
else if (v)
rval = xfs_dir2_block_getdents(dp, dirent, offset, filldir);
else
rval = xfs_dir2_leaf_getdents(dp, dirent, bufsize, offset,
filldir);
return rval;
}
/*
* Read a directory.
*/
int
xfs_dir_getdents(
xfs_trans_t *tp,
xfs_inode_t *dp,
uio_t *uio, /* caller's buffer control */
int *eofp) /* out: eof reached */
{
int alignment; /* alignment required for ABI */
xfs_dirent_t *dbp; /* malloc'ed buffer */
xfs_dir2_put_t put; /* entry formatting routine */
int rval; /* return value */
int v; /* type-checking value */
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
XFS_STATS_INC(xs_dir_getdents);
/*
* If our caller has given us a single contiguous aligned memory buffer,
* just work directly within that buffer. If it's in user memory,
* lock it down first.
*/
alignment = sizeof(xfs_off_t) - 1;
if ((uio->uio_iovcnt == 1) &&
(((__psint_t)uio->uio_iov[0].iov_base & alignment) == 0) &&
((uio->uio_iov[0].iov_len & alignment) == 0)) {
dbp = NULL;
put = xfs_dir2_put_dirent64_direct;
} else {
dbp = kmem_alloc(sizeof(*dbp) + MAXNAMELEN, KM_SLEEP);
put = xfs_dir2_put_dirent64_uio;
}
*eofp = 0;
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_getdents(dp, uio, eofp, dbp, put);
else if ((rval = xfs_dir2_isblock(tp, dp, &v)))
;
else if (v)
rval = xfs_dir2_block_getdents(tp, dp, uio, eofp, dbp, put);
else
rval = xfs_dir2_leaf_getdents(tp, dp, uio, eofp, dbp, put);
if (dbp != NULL)
kmem_free(dbp, sizeof(*dbp) + MAXNAMELEN);
return rval;
}
/*
* Read a directory.
*/
int
xfs_readdir(
xfs_inode_t *dp,
void *dirent,
size_t bufsize,
xfs_off_t *offset,
filldir_t filldir)
{
int rval; /* return value */
int v; /* type-checking value */
if (!(dp->i_d.di_mode & S_IFDIR))
return XFS_ERROR(ENOTDIR);
//TODO: find suitable replacement
//trace_xfs_readdir(dp);
//TODO: handle shutdown?
if (XFS_FORCED_SHUTDOWN(dp->i_mount))
return XFS_ERROR(EIO);
ASSERT((dp->i_d.di_mode & S_IFMT) == S_IFDIR);
//TODO: do we need this?
XFS_STATS_INC(xs_dir_getdents);
if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL)
rval = xfs_dir2_sf_getdents(dp, dirent, offset, filldir);
else if ((rval = xfs_dir2_isblock(NULL, dp, &v)))
;
else if (v)
rval = xfs_dir2_block_getdents(dp, dirent, offset, filldir);
else
rval = xfs_dir2_leaf_getdents(dp, dirent, bufsize, offset,
filldir);
return rval;
}
