tmpfs_fifoops.c revision 1.4.2.2
1 1.4.2.2 skrll /* $NetBSD: tmpfs_fifoops.c,v 1.4.2.2 2005/11/10 14:09:44 skrll Exp $ */ 2 1.4.2.2 skrll 3 1.4.2.2 skrll /* 4 1.4.2.2 skrll * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 1.4.2.2 skrll * All rights reserved. 6 1.4.2.2 skrll * 7 1.4.2.2 skrll * This code is derived from software contributed to The NetBSD Foundation 8 1.4.2.2 skrll * by Julio M. Merino Vidal, developed as part of Google's Summer of Code 9 1.4.2.2 skrll * 2005 program. 10 1.4.2.2 skrll * 11 1.4.2.2 skrll * Redistribution and use in source and binary forms, with or without 12 1.4.2.2 skrll * modification, are permitted provided that the following conditions 13 1.4.2.2 skrll * are met: 14 1.4.2.2 skrll * 1. Redistributions of source code must retain the above copyright 15 1.4.2.2 skrll * notice, this list of conditions and the following disclaimer. 16 1.4.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 17 1.4.2.2 skrll * notice, this list of conditions and the following disclaimer in the 18 1.4.2.2 skrll * documentation and/or other materials provided with the distribution. 19 1.4.2.2 skrll * 3. All advertising materials mentioning features or use of this software 20 1.4.2.2 skrll * must display the following acknowledgement: 21 1.4.2.2 skrll * This product includes software developed by the NetBSD 22 1.4.2.2 skrll * Foundation, Inc. and its contributors. 23 1.4.2.2 skrll * 4. Neither the name of The NetBSD Foundation nor the names of its 24 1.4.2.2 skrll * contributors may be used to endorse or promote products derived 25 1.4.2.2 skrll * from this software without specific prior written permission. 26 1.4.2.2 skrll * 27 1.4.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 1.4.2.2 skrll * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 1.4.2.2 skrll * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 1.4.2.2 skrll * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 1.4.2.2 skrll * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 1.4.2.2 skrll * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 1.4.2.2 skrll * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 1.4.2.2 skrll * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 1.4.2.2 skrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 1.4.2.2 skrll * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 1.4.2.2 skrll * POSSIBILITY OF SUCH DAMAGE. 38 1.4.2.2 skrll */ 39 1.4.2.2 skrll 40 1.4.2.2 skrll /* 41 1.4.2.2 skrll * tmpfs vnode interface for named pipes. 42 1.4.2.2 skrll */ 43 1.4.2.2 skrll 44 1.4.2.2 skrll #include <sys/cdefs.h> 45 1.4.2.2 skrll __KERNEL_RCSID(0, "$NetBSD: tmpfs_fifoops.c,v 1.4.2.2 2005/11/10 14:09:44 skrll Exp $"); 46 1.4.2.2 skrll 47 1.4.2.2 skrll #include <sys/param.h> 48 1.4.2.2 skrll #include <sys/vnode.h> 49 1.4.2.2 skrll 50 1.4.2.2 skrll #include <fs/tmpfs/tmpfs.h> 51 1.4.2.2 skrll #include <fs/tmpfs/tmpfs_fifoops.h> 52 1.4.2.2 skrll 53 1.4.2.2 skrll /* --------------------------------------------------------------------- */ 54 1.4.2.2 skrll 55 1.4.2.2 skrll /* 56 1.4.2.2 skrll * vnode operations vector used for fifos stored in a tmpfs file system. 57 1.4.2.2 skrll */ 58 1.4.2.2 skrll int (**tmpfs_fifoop_p)(void *); 59 1.4.2.2 skrll const struct vnodeopv_entry_desc tmpfs_fifoop_entries[] = { 60 1.4.2.2 skrll { &vop_default_desc, vn_default_error }, 61 1.4.2.2 skrll { &vop_lookup_desc, tmpfs_fifo_lookup }, 62 1.4.2.2 skrll { &vop_create_desc, tmpfs_fifo_create }, 63 1.4.2.2 skrll { &vop_mknod_desc, tmpfs_fifo_mknod }, 64 1.4.2.2 skrll { &vop_open_desc, tmpfs_fifo_open }, 65 1.4.2.2 skrll { &vop_close_desc, tmpfs_fifo_close }, 66 1.4.2.2 skrll { &vop_access_desc, tmpfs_fifo_access }, 67 1.4.2.2 skrll { &vop_getattr_desc, tmpfs_fifo_getattr }, 68 1.4.2.2 skrll { &vop_setattr_desc, tmpfs_fifo_setattr }, 69 1.4.2.2 skrll { &vop_read_desc, tmpfs_fifo_read }, 70 1.4.2.2 skrll { &vop_write_desc, tmpfs_fifo_write }, 71 1.4.2.2 skrll { &vop_ioctl_desc, tmpfs_fifo_ioctl }, 72 1.4.2.2 skrll { &vop_fcntl_desc, tmpfs_fifo_fcntl }, 73 1.4.2.2 skrll { &vop_poll_desc, tmpfs_fifo_poll }, 74 1.4.2.2 skrll { &vop_kqfilter_desc, tmpfs_fifo_kqfilter }, 75 1.4.2.2 skrll { &vop_revoke_desc, tmpfs_fifo_revoke }, 76 1.4.2.2 skrll { &vop_mmap_desc, tmpfs_fifo_mmap }, 77 1.4.2.2 skrll { &vop_fsync_desc, tmpfs_fifo_fsync }, 78 1.4.2.2 skrll { &vop_seek_desc, tmpfs_fifo_seek }, 79 1.4.2.2 skrll { &vop_remove_desc, tmpfs_fifo_remove }, 80 1.4.2.2 skrll { &vop_link_desc, tmpfs_fifo_link }, 81 1.4.2.2 skrll { &vop_rename_desc, tmpfs_fifo_rename }, 82 1.4.2.2 skrll { &vop_mkdir_desc, tmpfs_fifo_mkdir }, 83 1.4.2.2 skrll { &vop_rmdir_desc, tmpfs_fifo_rmdir }, 84 1.4.2.2 skrll { &vop_symlink_desc, tmpfs_fifo_symlink }, 85 1.4.2.2 skrll { &vop_readdir_desc, tmpfs_fifo_readdir }, 86 1.4.2.2 skrll { &vop_readlink_desc, tmpfs_fifo_readlink }, 87 1.4.2.2 skrll { &vop_abortop_desc, tmpfs_fifo_abortop }, 88 1.4.2.2 skrll { &vop_inactive_desc, tmpfs_fifo_inactive }, 89 1.4.2.2 skrll { &vop_reclaim_desc, tmpfs_fifo_reclaim }, 90 1.4.2.2 skrll { &vop_lock_desc, tmpfs_fifo_lock }, 91 1.4.2.2 skrll { &vop_unlock_desc, tmpfs_fifo_unlock }, 92 1.4.2.2 skrll { &vop_bmap_desc, tmpfs_fifo_bmap }, 93 1.4.2.2 skrll { &vop_strategy_desc, tmpfs_fifo_strategy }, 94 1.4.2.2 skrll { &vop_print_desc, tmpfs_fifo_print }, 95 1.4.2.2 skrll { &vop_pathconf_desc, tmpfs_fifo_pathconf }, 96 1.4.2.2 skrll { &vop_islocked_desc, tmpfs_fifo_islocked }, 97 1.4.2.2 skrll { &vop_advlock_desc, tmpfs_fifo_advlock }, 98 1.4.2.2 skrll { &vop_lease_desc, tmpfs_fifo_lease }, 99 1.4.2.2 skrll { &vop_bwrite_desc, tmpfs_fifo_bwrite }, 100 1.4.2.2 skrll { &vop_getpages_desc, tmpfs_fifo_getpages }, 101 1.4.2.2 skrll { &vop_putpages_desc, tmpfs_fifo_putpages }, 102 1.4.2.2 skrll { NULL, NULL } 103 1.4.2.2 skrll }; 104 1.4.2.2 skrll const struct vnodeopv_desc tmpfs_fifoop_opv_desc = 105 1.4.2.2 skrll { &tmpfs_fifoop_p, tmpfs_fifoop_entries }; 106 1.4.2.2 skrll 107 1.4.2.2 skrll /* --------------------------------------------------------------------- */ 108 1.4.2.2 skrll 109 1.4.2.2 skrll int 110 1.4.2.2 skrll tmpfs_fifo_close(void *v) 111 1.4.2.2 skrll { 112 1.4.2.2 skrll struct vnode *vp = ((struct vop_close_args *)v)->a_vp; 113 1.4.2.2 skrll 114 1.4.2.2 skrll int error; 115 1.4.2.2 skrll 116 1.4.2.2 skrll tmpfs_update(vp, NULL, NULL, UPDATE_CLOSE); 117 1.4.2.2 skrll error = VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), v); 118 1.4.2.2 skrll 119 1.4.2.2 skrll return error; 120 1.4.2.2 skrll } 121 1.4.2.2 skrll 122 1.4.2.2 skrll /* --------------------------------------------------------------------- */ 123 1.4.2.2 skrll 124 1.4.2.2 skrll int 125 1.4.2.2 skrll tmpfs_fifo_read(void *v) 126 1.4.2.2 skrll { 127 1.4.2.2 skrll struct vnode *vp = ((struct vop_read_args *)v)->a_vp; 128 1.4.2.2 skrll 129 1.4.2.2 skrll VP_TO_TMPFS_NODE(vp)->tn_status |= TMPFS_NODE_ACCESSED; 130 1.4.2.2 skrll return VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), v); 131 1.4.2.2 skrll } 132 1.4.2.2 skrll 133 1.4.2.2 skrll /* --------------------------------------------------------------------- */ 134 1.4.2.2 skrll 135 1.4.2.2 skrll int 136 1.4.2.2 skrll tmpfs_fifo_write(void *v) 137 1.4.2.2 skrll { 138 1.4.2.2 skrll struct vnode *vp = ((struct vop_write_args *)v)->a_vp; 139 1.4.2.2 skrll 140 1.4.2.2 skrll VP_TO_TMPFS_NODE(vp)->tn_status |= TMPFS_NODE_MODIFIED; 141 1.4.2.2 skrll return VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), v); 142 1.4.2.2 skrll } 143
Indexes created Fri Sep 26 20:09:58 GMT 2025