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Diffstat (limited to 'sys/tmpfs/tmpfs_fifoops.c')
| -rw-r--r-- | sys/tmpfs/tmpfs_fifoops.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/sys/tmpfs/tmpfs_fifoops.c b/sys/tmpfs/tmpfs_fifoops.c new file mode 100644 index 00000000000..cc89d5f6d3b --- /dev/null +++ b/sys/tmpfs/tmpfs_fifoops.c @@ -0,0 +1,130 @@ +/* $NetBSD: tmpfs_fifoops.c,v 1.9 2011/05/24 20:17:49 rmind Exp $ */ + +/* + * Copyright (c) 2005 The NetBSD Foundation, Inc. + * Copyright (c) 2013 Pedro Martelletto + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Julio M. Merino Vidal, developed as part of Google's Summer of Code + * 2005 program. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * tmpfs vnode interface for named pipes. + */ + +#if 0 +#include <sys/cdefs.h> +__KERNEL_RCSID(0, "$NetBSD: tmpfs_fifoops.c,v 1.9 2011/05/24 20:17:49 rmind Exp $"); +#endif + +#include <sys/param.h> +#include <sys/vnode.h> + +#include <tmpfs/tmpfs.h> +#include <miscfs/fifofs/fifo.h> +#include <tmpfs/tmpfs_vnops.h> + +int tmpfs_fifo_close (void *); +int tmpfs_fifo_read (void *); +int tmpfs_fifo_write (void *); +int tmpfs_fifo_fsync (void *); + +/* + * vnode operations vector used for fifos stored in a tmpfs file system. + */ + +struct vops tmpfs_fifovops = { + .vop_lookup = vop_generic_lookup, + .vop_create = fifo_badop, + .vop_mknod = fifo_badop, + .vop_open = fifo_open, + .vop_close = fifo_close, + .vop_access = tmpfs_access, + .vop_getattr = tmpfs_getattr, + .vop_setattr = tmpfs_setattr, + .vop_read = tmpfs_fifo_read, + .vop_write = tmpfs_fifo_write, + .vop_ioctl = fifo_ioctl, + .vop_poll = fifo_poll, + .vop_kqfilter = fifo_kqfilter, + .vop_revoke = vop_generic_revoke, + .vop_fsync = tmpfs_fifo_fsync, + .vop_remove = fifo_badop, + .vop_link = fifo_badop, + .vop_rename = fifo_badop, + .vop_mkdir = fifo_badop, + .vop_rmdir = fifo_badop, + .vop_symlink = fifo_badop, + .vop_readdir = fifo_badop, + .vop_readlink = fifo_badop, + .vop_abortop = fifo_badop, + .vop_inactive = tmpfs_inactive, + .vop_reclaim = tmpfs_reclaim, + .vop_lock = tmpfs_lock, + .vop_unlock = tmpfs_unlock, + .vop_bmap = vop_generic_bmap, + .vop_strategy = fifo_badop, + .vop_print = tmpfs_print, + .vop_pathconf = fifo_pathconf, + .vop_advlock = fifo_advlock, + .vop_bwrite = tmpfs_bwrite, +}; + +int +tmpfs_fifo_read(void *v) +{ + struct vop_read_args /* { + struct vnode *a_vp; + struct uio *a_uio; + int a_ioflag; + kauth_cred_t a_cred; + } */ *ap = v; + struct vnode *vp = ap->a_vp; + + tmpfs_update(VP_TO_TMPFS_NODE(vp), TMPFS_NODE_ACCESSED); + return (fifo_read(v)); +} + +int +tmpfs_fifo_write(void *v) +{ + struct vop_write_args /* { + struct vnode *a_vp; + struct uio *a_uio; + int a_ioflag; + kauth_cred_t a_cred; + } */ *ap = v; + struct vnode *vp = ap->a_vp; + + tmpfs_update(VP_TO_TMPFS_NODE(vp), TMPFS_NODE_MODIFIED); + return (fifo_write(v)); +} + +int +tmpfs_fifo_fsync(void *v) +{ + return (0); +} |