1 #include <afs/param.h> /* Should be always first */
2 #include <afs/sysincludes.h> /* Standard vendor system headers */
3 #include <afs/afsincludes.h> /* Afs-based standard headers */
4 #include <afs/afs_stats.h> /* statistics */
5 #include <sys/malloc.h>
8 #include <sys/syscall.h>
10 struct vcache *afs_globalVp = 0;
11 struct mount *afs_globalVFS = 0;
20 afs_fhtovp(mp, fhp, vpp)
39 afs_start(mp, flags, p)
44 return (0); /* nothing to do. ? */
48 afs_mount(mp, path, data, ndp, p)
49 register struct mount *mp;
52 struct nameidata *ndp;
55 /* ndp contains the mounted-from device. Just ignore it.
56 we also don't care about our proc struct. */
60 if (mp->mnt_flag & MNT_UPDATE)
64 AFS_STATCNT(afs_mount);
66 if (afs_globalVFS) { /* Don't allow remounts. */
74 mp->mnt_stat.f_iosize=8192;
76 (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN-1, &size);
77 bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
78 bzero(mp->mnt_stat.f_mntfromname, MNAMELEN);
79 strcpy(mp->mnt_stat.f_mntfromname, "AFS");
80 /* null terminated string "AFS" will fit, just leave it be. */
81 strcpy(mp->mnt_stat.f_fstypename, "afs");
83 (void) afs_statfs(mp, &mp->mnt_stat, p);
88 afs_unmount(mp, flags, p)
95 AFS_STATCNT(afs_unmount);
104 afs_root(struct mount *mp,
108 struct vrequest treq;
109 register struct vcache *tvp=0;
110 struct proc *p=current_proc();
114 cr=*p->p_cred->pc_ucred;
117 AFS_STATCNT(afs_root);
118 if (afs_globalVp && (afs_globalVp->states & CStatd)) {
123 if (!(error = afs_InitReq(&treq, &cr)) &&
124 !(error = afs_CheckInit())) {
125 tvp = afs_GetVCache(&afs_rootFid, &treq, (afs_int32 *)0,
126 (struct vcache*)0, WRITE_LOCK);
127 /* we really want this to stay around */
137 vn_lock((struct vnode *)tvp, LK_EXCLUSIVE | LK_RETRY, p);
140 *vpp = (struct vnode *) tvp;
141 tvp->v.v_flag |= VROOT;
144 afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *vpp,
145 ICL_TYPE_INT32, error);
151 afs_vget(mp, lfl, vp)
157 printf("vget called. help!\n");
158 if (vp->v_usecount < 0) {
159 vprint("bad usecount", vp);
162 error = vget(vp, lfl, current_proc());
164 insmntque(vp, afs_globalVFS); /* take off free list */
168 int afs_statfs(struct mount *mp, struct statfs *abp, struct proc *p)
171 AFS_STATCNT(afs_statfs);
174 abp->f_type = MOUNT_AFS;
176 abp->f_bsize = mp->vfs_bsize;
177 abp->f_iosize = mp->vfs_bsize;
179 /* Fake a high number below to satisfy programs that use the statfs call
180 * to make sure that there's enough space in the device partition before
181 * storing something there.
183 abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files =
184 abp->f_ffree = 2000000;
186 abp->f_fsid.val[0] = mp->mnt_stat.f_fsid.val[0];
187 abp->f_fsid.val[1] = mp->mnt_stat.f_fsid.val[1];
188 if (abp != &mp->mnt_stat) {
189 abp->f_type = mp->mnt_vfc->vfc_typenum;
190 bcopy((caddr_t)mp->mnt_stat.f_mntonname,
191 (caddr_t)&abp->f_mntonname[0], MNAMELEN);
192 bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
193 (caddr_t)&abp->f_mntfromname[0], MNAMELEN);
200 int afs_sync(mp, waitfor, cred, p)
215 extern int vfs_opv_numops; /* The total number of defined vnode operations */
216 extern struct vnodeopv_desc afs_vnodeop_opv_desc;
217 int afs_init(struct vfsconf *vfc) {
219 int (**opv_desc_vector)();
220 struct vnodeopv_entry_desc *opve_descp;
224 MALLOC(afs_vnodeop_p, PFI *, vfs_opv_numops*sizeof(PFI), M_TEMP, M_WAITOK);
226 bzero (afs_vnodeop_p, vfs_opv_numops*sizeof(PFI));
228 opv_desc_vector = afs_vnodeop_p;
229 for (j=0; afs_vnodeop_opv_desc.opv_desc_ops[j].opve_op; j++) {
230 opve_descp = &(afs_vnodeop_opv_desc.opv_desc_ops[j]);
233 * Sanity check: is this operation listed
234 * in the list of operations? We check this
235 * by seeing if its offest is zero. Since
236 * the default routine should always be listed
237 * first, it should be the only one with a zero
238 * offset. Any other operation with a zero
239 * offset is probably not listed in
240 * vfs_op_descs, and so is probably an error.
242 * A panic here means the layer programmer
243 * has committed the all-too common bug
244 * of adding a new operation to the layer's
245 * list of vnode operations but
246 * not adding the operation to the system-wide
247 * list of supported operations.
249 if (opve_descp->opve_op->vdesc_offset == 0 &&
250 opve_descp->opve_op->vdesc_offset != VOFFSET(vop_default)) {
251 printf("afs_init: operation %s not listed in %s.\n",
252 opve_descp->opve_op->vdesc_name,
254 panic ("load_afs: bad operation");
257 * Fill in this entry.
259 opv_desc_vector[opve_descp->opve_op->vdesc_offset] =
260 opve_descp->opve_impl;
264 * Finally, go back and replace unfilled routines
265 * with their default. (Sigh, an O(n^3) algorithm. I
266 * could make it better, but that'd be work, and n is small.)
270 * Force every operations vector to have a default routine.
272 opv_desc_vector = afs_vnodeop_p;
273 if (opv_desc_vector[VOFFSET(vop_default)]==NULL) {
274 panic("afs_init: operation vector without default routine.");
276 for (j = 0;j<vfs_opv_numops; j++)
277 if (opv_desc_vector[j] == NULL)
279 opv_desc_vector[VOFFSET(vop_default)];
282 struct vfsops afs_vfsops = {