+
+/*
+ * Advisory record locking support
+ */
+ufs_advlock(vp, id, op, fl, flags)
+ struct vnode *vp;
+ caddr_t id;
+ int op;
+ register struct flock *fl;
+ int flags;
+{
+ register struct inode *ip = VTOI(vp);
+ register struct lockf *lock;
+ off_t start, end;
+ int error;
+
+ /*
+ * Avoid the common case of unlocking when inode has no locks.
+ */
+ if (ip->i_lockf == (struct lockf *)0) {
+ if (op != F_SETLK) {
+ fl->l_type = F_UNLCK;
+ return (0);
+ }
+ }
+ /*
+ * Convert the flock structure into a start and end.
+ */
+ switch (fl->l_whence) {
+
+ case SEEK_SET:
+ case SEEK_CUR:
+ /*
+ * Caller is responsible for adding any necessary offset
+ * when SEEK_CUR is used.
+ */
+ start = fl->l_start;
+ break;
+
+ case SEEK_END:
+ start = ip->i_size + fl->l_start;
+ break;
+
+ default:
+ return (EINVAL);
+ }
+ if (start < 0)
+ return (EINVAL);
+ if (fl->l_len == 0)
+ end = -1;
+ else
+ end = start + fl->l_len - 1;
+ /*
+ * Create the lockf structure
+ */
+ MALLOC(lock, struct lockf *, sizeof *lock, M_LOCKF, M_WAITOK);
+ lock->lf_start = start;
+ lock->lf_end = end;
+ lock->lf_id = id;
+ lock->lf_inode = ip;
+ lock->lf_type = fl->l_type;
+ lock->lf_next = (struct lockf *)0;
+ lock->lf_block = (struct lockf *)0;
+ lock->lf_flags = flags;
+ /*
+ * Do the requested operation.
+ */
+ switch(op) {
+ case F_SETLK:
+ return (lf_setlock(lock));
+
+ case F_UNLCK:
+ error = lf_clearlock(lock);
+ FREE(lock, M_LOCKF);
+ return (error);
+
+ case F_GETLK:
+ error = lf_getlock(lock, fl);
+ FREE(lock, M_LOCKF);
+ return (error);
+
+ default:
+ free(lock, M_LOCKF);
+ return (EINVAL);
+ }
+ /* NOTREACHED */
+}
+
+/*
+ * Global vfs data structures for ufs
+ */
+struct vnodeops ufs_vnodeops = {
+ ufs_lookup, /* lookup */
+ ufs_create, /* create */
+ ufs_mknod, /* mknod */
+ ufs_open, /* open */
+ ufs_close, /* close */
+ ufs_access, /* access */
+ ufs_getattr, /* getattr */
+ ufs_setattr, /* setattr */
+ ufs_read, /* read */
+ ufs_write, /* write */
+ ufs_ioctl, /* ioctl */
+ ufs_select, /* select */
+ ufs_mmap, /* mmap */
+ ufs_fsync, /* fsync */
+ ufs_seek, /* seek */
+ ufs_remove, /* remove */
+ ufs_link, /* link */
+ ufs_rename, /* rename */
+ ufs_mkdir, /* mkdir */
+ ufs_rmdir, /* rmdir */
+ ufs_symlink, /* symlink */
+ ufs_readdir, /* readdir */
+ ufs_readlink, /* readlink */
+ ufs_abortop, /* abortop */
+ ufs_inactive, /* inactive */
+ ufs_reclaim, /* reclaim */
+ ufs_lock, /* lock */
+ ufs_unlock, /* unlock */
+ ufs_bmap, /* bmap */
+ ufs_strategy, /* strategy */
+ ufs_print, /* print */
+ ufs_islocked, /* islocked */
+ ufs_advlock, /* advlock */
+};
+
+struct vnodeops spec_inodeops = {
+ spec_lookup, /* lookup */
+ spec_create, /* create */
+ spec_mknod, /* mknod */
+ spec_open, /* open */
+ ufsspec_close, /* close */
+ ufs_access, /* access */
+ ufs_getattr, /* getattr */
+ ufs_setattr, /* setattr */
+ ufsspec_read, /* read */
+ ufsspec_write, /* write */
+ spec_ioctl, /* ioctl */
+ spec_select, /* select */
+ spec_mmap, /* mmap */
+ spec_fsync, /* fsync */
+ spec_seek, /* seek */
+ spec_remove, /* remove */
+ spec_link, /* link */
+ spec_rename, /* rename */
+ spec_mkdir, /* mkdir */
+ spec_rmdir, /* rmdir */
+ spec_symlink, /* symlink */
+ spec_readdir, /* readdir */
+ spec_readlink, /* readlink */
+ spec_abortop, /* abortop */
+ ufs_inactive, /* inactive */
+ ufs_reclaim, /* reclaim */
+ ufs_lock, /* lock */
+ ufs_unlock, /* unlock */
+ spec_bmap, /* bmap */
+ spec_strategy, /* strategy */
+ ufs_print, /* print */
+ ufs_islocked, /* islocked */
+ spec_advlock, /* advlock */
+};
+
+#ifdef FIFO
+struct vnodeops fifo_inodeops = {
+ fifo_lookup, /* lookup */
+ fifo_create, /* create */
+ fifo_mknod, /* mknod */
+ fifo_open, /* open */
+ ufsfifo_close, /* close */
+ ufs_access, /* access */
+ ufs_getattr, /* getattr */
+ ufs_setattr, /* setattr */
+ ufsfifo_read, /* read */
+ ufsfifo_write, /* write */
+ fifo_ioctl, /* ioctl */
+ fifo_select, /* select */
+ fifo_mmap, /* mmap */
+ fifo_fsync, /* fsync */
+ fifo_seek, /* seek */
+ fifo_remove, /* remove */
+ fifo_link, /* link */
+ fifo_rename, /* rename */
+ fifo_mkdir, /* mkdir */
+ fifo_rmdir, /* rmdir */
+ fifo_symlink, /* symlink */
+ fifo_readdir, /* readdir */
+ fifo_readlink, /* readlink */
+ fifo_abortop, /* abortop */
+ ufs_inactive, /* inactive */
+ ufs_reclaim, /* reclaim */
+ ufs_lock, /* lock */
+ ufs_unlock, /* unlock */
+ fifo_bmap, /* bmap */
+ fifo_strategy, /* strategy */
+ ufs_print, /* print */
+ ufs_islocked, /* islocked */
+ fifo_advlock, /* advlock */
+};
+#endif /* FIFO */
+
+enum vtype iftovt_tab[16] = {
+ VNON, VFIFO, VCHR, VNON, VDIR, VNON, VBLK, VNON,
+ VREG, VNON, VLNK, VNON, VSOCK, VNON, VNON, VBAD,
+};
+int vttoif_tab[9] = {
+ 0, IFREG, IFDIR, IFBLK, IFCHR, IFLNK, IFSOCK, IFIFO, IFMT,
+};
projects / unix-history / blobdiff