static int /* ERRNO if error, 0 if successful. */
sam_inval_dev_call(
void *arg, /* Pointer to arguments. */
int size,
cred_t *credp)
{
sam_fsinval_arg_t args;
dev_t rdev;
if (secpolicy_fs_config(credp, NULL)) {
return (EINVAL);
}
if (size != sizeof (args) ||
copyin(arg, (caddr_t)&args, sizeof (args))) {
return (EFAULT);
}
rdev = expldev(args.rdev);
bflush(rdev);
binval(rdev);
return (0);
}
/*
* The disk has been changed!
*/
void
pc_diskchanged(struct pcfs *fsp)
{
struct pcnode *pcp, *npcp = NULL;
struct pchead *hp;
struct vnode *vp;
extern vfs_t EIO_vfs;
struct vfs *vfsp;
/*
* Eliminate all pcnodes (dir & file) associated with this fs.
* If the node is internal, ie, no references outside of
* pcfs itself, then release the associated vnode structure.
* Invalidate the in core FAT.
* Invalidate cached data blocks and blocks waiting for I/O.
*/
PC_DPRINTF1(1, "pc_diskchanged fsp=0x%p\n", (void *)fsp);
vfsp = PCFSTOVFS(fsp);
for (hp = pcdhead; hp < &pcdhead[NPCHASH]; hp++) {
for (pcp = hp->pch_forw;
pcp != (struct pcnode *)hp; pcp = npcp) {
npcp = pcp -> pc_forw;
vp = PCTOV(pcp);
if ((vp->v_vfsp == vfsp) &&
!(pcp->pc_flags & PC_RELEHOLD)) {
mutex_enter(&(vp)->v_lock);
if (vp->v_count > 0) {
mutex_exit(&(vp)->v_lock);
continue;
}
mutex_exit(&(vp)->v_lock);
VN_HOLD(vp);
remque(pcp);
vp->v_data = NULL;
vp->v_vfsp = &EIO_vfs;
vp->v_type = VBAD;
VN_RELE(vp);
if (!(pcp->pc_flags & PC_EXTERNAL)) {
(void) pvn_vplist_dirty(vp,
(u_offset_t)0, pcfs_putapage,
B_INVAL | B_TRUNC,
(struct cred *)NULL);
vn_free(vp);
}
kmem_free(pcp, sizeof (struct pcnode));
fsp->pcfs_nrefs --;
VFS_RELE(vfsp);
}
}
}
for (hp = pcfhead; fsp->pcfs_frefs && hp < &pcfhead[NPCHASH]; hp++) {
for (pcp = hp->pch_forw; fsp->pcfs_frefs &&
pcp != (struct pcnode *)hp; pcp = npcp) {
npcp = pcp -> pc_forw;
vp = PCTOV(pcp);
if ((vp->v_vfsp == vfsp) &&
!(pcp->pc_flags & PC_RELEHOLD)) {
mutex_enter(&(vp)->v_lock);
if (vp->v_count > 0) {
mutex_exit(&(vp)->v_lock);
continue;
}
mutex_exit(&(vp)->v_lock);
VN_HOLD(vp);
remque(pcp);
vp->v_data = NULL;
vp->v_vfsp = &EIO_vfs;
vp->v_type = VBAD;
VN_RELE(vp);
if (!(pcp->pc_flags & PC_EXTERNAL)) {
(void) pvn_vplist_dirty(vp,
(u_offset_t)0, pcfs_putapage,
B_INVAL | B_TRUNC,
(struct cred *)NULL);
vn_free(vp);
}
kmem_free(pcp, sizeof (struct pcnode));
fsp->pcfs_frefs--;
fsp->pcfs_nrefs--;
VFS_RELE(vfsp);
}
}
}
#ifdef undef
if (fsp->pcfs_frefs) {
rw_exit(&pcnodes_lock);
panic("pc_diskchanged: frefs");
}
if (fsp->pcfs_nrefs) {
rw_exit(&pcnodes_lock);
panic("pc_diskchanged: nrefs");
}
#endif
if (!(vfsp->vfs_flag & VFS_UNMOUNTED) &&
fsp->pcfs_fatp != (uchar_t *)0) {
pc_invalfat(fsp);
} else {
binval(fsp->pcfs_xdev);
}
}
