6 #include <afs/sysincludes.h> /* Standard vendor system headers */
7 #include <afs/afsincludes.h> /* Afs-based standard headers */
8 #include <afs/afs_stats.h> /* statistics */
9 #include <sys/malloc.h>
10 #include <sys/namei.h>
12 #include <sys/syscall.h>
14 struct vcache *afs_globalVp = 0;
15 struct mount *afs_globalVFS = 0;
24 afs_fhtovp(mp, fhp, vpp)
43 afs_start(mp, flags, p)
48 return (0); /* nothing to do. ? */
52 afs_mount(mp, path, data, ndp, p)
53 register struct mount *mp;
56 struct nameidata *ndp;
59 /* ndp contains the mounted-from device. Just ignore it.
60 we also don't care about our proc struct. */
64 if (mp->mnt_flag & MNT_UPDATE)
68 AFS_STATCNT(afs_mount);
70 if (afs_globalVFS) { /* Don't allow remounts. */
78 mp->mnt_stat.f_iosize=8192;
80 (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN-1, &size);
81 memset(mp->mnt_stat.f_mntonname + size, 0, MNAMELEN - size);
82 memset(mp->mnt_stat.f_mntfromname, 0, MNAMELEN);
83 strcpy(mp->mnt_stat.f_mntfromname, "AFS");
84 /* null terminated string "AFS" will fit, just leave it be. */
85 strcpy(mp->mnt_stat.f_fstypename, "afs");
87 (void) afs_statfs(mp, &mp->mnt_stat, p);
92 afs_unmount(mp, flags, p)
99 AFS_STATCNT(afs_unmount);
108 afs_root(struct mount *mp,
112 struct vrequest treq;
113 register struct vcache *tvp=0;
114 struct proc *p=current_proc();
118 cr=*p->p_cred->pc_ucred;
121 AFS_STATCNT(afs_root);
122 if (afs_globalVp && (afs_globalVp->states & CStatd)) {
127 afs_PutVCache(afs_globalVp);
131 if (!(error = afs_InitReq(&treq, &cr)) &&
132 !(error = afs_CheckInit())) {
133 tvp = afs_GetVCache(&afs_rootFid, &treq, NULL, NULL);
134 /* we really want this to stay around */
144 vn_lock(AFSTOV(tvp), LK_EXCLUSIVE | LK_RETRY, p);
148 AFSTOV(tvp)->v_flag |= VROOT;
151 afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *vpp,
152 ICL_TYPE_INT32, error);
158 afs_vget(mp, lfl, vp)
164 printf("vget called. help!\n");
165 if (vp->v_usecount < 0) {
166 vprint("bad usecount", vp);
169 error = vget(vp, lfl, current_proc());
171 insmntque(vp, afs_globalVFS); /* take off free list */
175 int afs_statfs(struct mount *mp, struct statfs *abp, struct proc *p)
178 AFS_STATCNT(afs_statfs);
181 abp->f_type = MOUNT_AFS;
183 abp->f_bsize = mp->vfs_bsize;
184 abp->f_iosize = mp->vfs_bsize;
186 /* Fake a high number below to satisfy programs that use the statfs call
187 * to make sure that there's enough space in the device partition before
188 * storing something there.
190 abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files =
191 abp->f_ffree = 2000000;
193 abp->f_fsid.val[0] = mp->mnt_stat.f_fsid.val[0];
194 abp->f_fsid.val[1] = mp->mnt_stat.f_fsid.val[1];
195 if (abp != &mp->mnt_stat) {
196 abp->f_type = mp->mnt_vfc->vfc_typenum;
197 memcpy((caddr_t)&abp->f_mntonname[0], (caddr_t)mp->mnt_stat.f_mntonname, MNAMELEN);
198 memcpy((caddr_t)&abp->f_mntfromname[0], (caddr_t)mp->mnt_stat.f_mntfromname, MNAMELEN);
205 int afs_sync(mp, waitfor, cred, p)
220 extern int vfs_opv_numops; /* The total number of defined vnode operations */
221 extern struct vnodeopv_desc afs_vnodeop_opv_desc;
222 int afs_init(struct vfsconf *vfc) {
224 int (**opv_desc_vector)();
225 struct vnodeopv_entry_desc *opve_descp;
229 MALLOC(afs_vnodeop_p, PFI *, vfs_opv_numops*sizeof(PFI), M_TEMP, M_WAITOK);
231 memset(afs_vnodeop_p, 0, vfs_opv_numops*sizeof(PFI));
233 opv_desc_vector = afs_vnodeop_p;
234 for (j=0; afs_vnodeop_opv_desc.opv_desc_ops[j].opve_op; j++) {
235 opve_descp = &(afs_vnodeop_opv_desc.opv_desc_ops[j]);
238 * Sanity check: is this operation listed
239 * in the list of operations? We check this
240 * by seeing if its offest is zero. Since
241 * the default routine should always be listed
242 * first, it should be the only one with a zero
243 * offset. Any other operation with a zero
244 * offset is probably not listed in
245 * vfs_op_descs, and so is probably an error.
247 * A panic here means the layer programmer
248 * has committed the all-too common bug
249 * of adding a new operation to the layer's
250 * list of vnode operations but
251 * not adding the operation to the system-wide
252 * list of supported operations.
254 if (opve_descp->opve_op->vdesc_offset == 0 &&
255 opve_descp->opve_op->vdesc_offset != VOFFSET(vop_default)) {
256 printf("afs_init: operation %s not listed in %s.\n",
257 opve_descp->opve_op->vdesc_name,
259 panic ("load_afs: bad operation");
262 * Fill in this entry.
264 opv_desc_vector[opve_descp->opve_op->vdesc_offset] =
265 opve_descp->opve_impl;
269 * Finally, go back and replace unfilled routines
270 * with their default. (Sigh, an O(n^3) algorithm. I
271 * could make it better, but that'd be work, and n is small.)
275 * Force every operations vector to have a default routine.
277 opv_desc_vector = afs_vnodeop_p;
278 if (opv_desc_vector[VOFFSET(vop_default)]==NULL) {
279 panic("afs_init: operation vector without default routine.");
281 for (j = 0;j<vfs_opv_numops; j++)
282 if (opv_desc_vector[j] == NULL)
284 opv_desc_vector[VOFFSET(vop_default)];
287 struct vfsops afs_vfsops = {