/*
* discard preallocated blocks
*/
int
ext2_inactive(struct vop_inactive_args *ap)
{
struct vnode *vp = ap->a_vp;
struct inode *ip = VTOI(vp);
struct thread *td = ap->a_td;
int mode, error = 0;
/*
* Ignore inodes related to stale file handles.
*/
if (ip->i_mode == 0)
goto out;
if (ip->i_nlink <= 0) {
error = ext2_truncate(vp, (off_t)0, 0, NOCRED, td);
ip->i_rdev = 0;
mode = ip->i_mode;
ip->i_mode = 0;
ip->i_flag |= IN_CHANGE | IN_UPDATE;
ext2_vfree(vp, ip->i_number, mode);
}
if (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE))
ext2_update(vp, 0);
out:
/*
* If we are done with the inode, reclaim it
* so that it can be reused immediately.
*/
if (ip->i_mode == 0)
vrecycle(vp);
return (error);
}
/*
* Allocate an inode in the filesystem.
*
*/
int
ext2_valloc(struct vnode *pvp, int mode, struct ucred *cred, struct vnode **vpp)
{
struct timespec ts;
struct inode *pip;
struct m_ext2fs *fs;
struct inode *ip;
struct ext2mount *ump;
ino_t ino, ipref;
int i, error, cg;
*vpp = NULL;
pip = VTOI(pvp);
fs = pip->i_e2fs;
ump = pip->i_ump;
EXT2_LOCK(ump);
if (fs->e2fs->e2fs_ficount == 0)
goto noinodes;
/*
* If it is a directory then obtain a cylinder group based on
* ext2_dirpref else obtain it using ino_to_cg. The preferred inode is
* always the next inode.
*/
if ((mode & IFMT) == IFDIR) {
cg = ext2_dirpref(pip);
if (fs->e2fs_contigdirs[cg] < 255)
fs->e2fs_contigdirs[cg]++;
} else {
cg = ino_to_cg(fs, pip->i_number);
if (fs->e2fs_contigdirs[cg] > 0)
fs->e2fs_contigdirs[cg]--;
}
ipref = cg * fs->e2fs->e2fs_ipg + 1;
ino = (ino_t)ext2_hashalloc(pip, cg, (long)ipref, mode, ext2_nodealloccg);
if (ino == 0)
goto noinodes;
error = VFS_VGET(pvp->v_mount, ino, LK_EXCLUSIVE, vpp);
if (error) {
ext2_vfree(pvp, ino, mode);
return (error);
}
ip = VTOI(*vpp);
/*
* The question is whether using VGET was such good idea at all:
* Linux doesn't read the old inode in when it is allocating a
* new one. I will set at least i_size and i_blocks to zero.
*/
ip->i_size = 0;
ip->i_blocks = 0;
ip->i_mode = 0;
ip->i_flags = 0;
/* now we want to make sure that the block pointers are zeroed out */
for (i = 0; i < NDADDR; i++)
ip->i_db[i] = 0;
for (i = 0; i < NIADDR; i++)
ip->i_ib[i] = 0;
/*
* Set up a new generation number for this inode.
* XXX check if this makes sense in ext2
*/
if (ip->i_gen == 0 || ++ip->i_gen == 0)
ip->i_gen = random() / 2 + 1;
vfs_timestamp(&ts);
ip->i_birthtime = ts.tv_sec;
ip->i_birthnsec = ts.tv_nsec;
/*
printf("ext2_valloc: allocated inode %d\n", ino);
*/
return (0);
noinodes:
EXT2_UNLOCK(ump);
ext2_fserr(fs, cred->cr_uid, "out of inodes");
uprintf("\n%s: create/symlink failed, no inodes free\n", fs->e2fs_fsmnt);
return (ENOSPC);
}
