static int
xfs_dir_shortform_validate_ondisk(xfs_mount_t *mp, xfs_dinode_t *dp)
{
xfs_ino_t ino;
int namelen_sum;
int count;
xfs_dir_shortform_t *sf;
xfs_dir_sf_entry_t *sfe;
int i;
if ((INT_GET(dp->di_core.di_mode, ARCH_CONVERT) & IFMT) != IFDIR) {
return 0;
}
if (INT_GET(dp->di_core.di_format, ARCH_CONVERT) != XFS_DINODE_FMT_LOCAL) {
return 0;
}
if (INT_GET(dp->di_core.di_size, ARCH_CONVERT) < sizeof(sf->hdr)) {
xfs_fs_cmn_err(CE_WARN, mp, "Invalid shortform size: dp 0x%p\n",
dp);
return 1;
}
sf = (xfs_dir_shortform_t *)(&dp->di_u.di_dirsf);
ino = XFS_GET_DIR_INO_ARCH(mp, sf->hdr.parent, ARCH_CONVERT);
if (xfs_dir_ino_validate(mp, ino))
return 1;
count = sf->hdr.count;
if ((count < 0) || ((count * 10) > XFS_LITINO(mp))) {
xfs_fs_cmn_err(CE_WARN, mp,
"Invalid shortform count: dp 0x%p\n", dp);
return(1);
}
if (count == 0) {
return 0;
}
namelen_sum = 0;
sfe = &sf->list[0];
for (i = sf->hdr.count - 1; i >= 0; i--) {
ino = XFS_GET_DIR_INO_ARCH(mp, sfe->inumber, ARCH_CONVERT);
xfs_dir_ino_validate(mp, ino);
if (sfe->namelen >= XFS_LITINO(mp)) {
xfs_fs_cmn_err(CE_WARN, mp,
"Invalid shortform namelen: dp 0x%p\n", dp);
return 1;
}
namelen_sum += sfe->namelen;
sfe = XFS_DIR_SF_NEXTENTRY(sfe);
}
if (namelen_sum >= XFS_LITINO(mp)) {
xfs_fs_cmn_err(CE_WARN, mp,
"Invalid shortform namelen: dp 0x%p\n", dp);
return 1;
}
return 0;
}
xfs_dir_sf_entry_t *
xfs_dir_sf_nextentry(xfs_dir_sf_entry_t *sfep)
{
return XFS_DIR_SF_NEXTENTRY(sfep);
}
