+
+/*
+ * allocate an unused inode
+ */
+ino_t
+allocino(request, type)
+ ino_t request;
+ int type;
+{
+ register ino_t ino;
+ register DINODE *dp;
+
+ if (request == 0)
+ request = ROOTINO;
+ else if (statemap[request] != USTATE)
+ return (0);
+ for (ino = request; ino < imax; ino++)
+ if (statemap[ino] == USTATE)
+ break;
+ if (ino == imax)
+ return (0);
+ switch (type & IFMT) {
+ case IFDIR:
+ statemap[ino] = DSTATE;
+ break;
+ case IFREG:
+ case IFLNK:
+ statemap[ino] = FSTATE;
+ break;
+ default:
+ return (0);
+ }
+ dp = ginode(ino);
+ dp->di_db[0] = allocblk(1);
+ if (dp->di_db[0] == 0) {
+ statemap[ino] = USTATE;
+ return (0);
+ }
+ dp->di_mode = type;
+ time(&dp->di_atime);
+ dp->di_mtime = dp->di_ctime = dp->di_atime;
+ dp->di_size = sblock.fs_fsize;
+ dp->di_blocks = btodb(sblock.fs_fsize);
+ n_files++;
+ inodirty();
+ return (ino);
+}
+
+/*
+ * deallocate an inode
+ */
+freeino(ino)
+ ino_t ino;
+{
+ struct inodesc idesc;
+ extern int pass4check();
+ DINODE *dp;
+
+ bzero((char *)&idesc, sizeof(struct inodesc));
+ idesc.id_type = ADDR;
+ idesc.id_func = pass4check;
+ idesc.id_number = ino;
+ dp = ginode(ino);
+ (void)ckinode(dp, &idesc);
+ zapino(dp);
+ inodirty();
+ statemap[ino] = USTATE;
+ n_files--;
+}