1 /* $NetBSD: tmpfs_fifoops.c,v 1.2 2005/09/10 22:28:57 jmmv Exp $ */ 2 3 /* 4 * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Julio M. Merino Vidal. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * tmpfs vnode interface for named pipes. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: tmpfs_fifoops.c,v 1.2 2005/09/10 22:28:57 jmmv Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/vnode.h> 48 49 #include <fs/tmpfs/tmpfs.h> 50 #include <fs/tmpfs/tmpfs_fifoops.h> 51 52 /* --------------------------------------------------------------------- */ 53 54 /* 55 * vnode operations vector used for fifos stored in a tmpfs file system. 56 */ 57 int (**tmpfs_fifoop_p)(void *); 58 const struct vnodeopv_entry_desc tmpfs_fifoop_entries[] = { 59 { &vop_default_desc, vn_default_error }, 60 { &vop_lookup_desc, tmpfs_fifo_lookup }, 61 { &vop_create_desc, tmpfs_fifo_create }, 62 { &vop_mknod_desc, tmpfs_fifo_mknod }, 63 { &vop_open_desc, tmpfs_fifo_open }, 64 { &vop_close_desc, tmpfs_fifo_close }, 65 { &vop_access_desc, tmpfs_fifo_access }, 66 { &vop_getattr_desc, tmpfs_fifo_getattr }, 67 { &vop_setattr_desc, tmpfs_fifo_setattr }, 68 { &vop_read_desc, tmpfs_fifo_read }, 69 { &vop_write_desc, tmpfs_fifo_write }, 70 { &vop_ioctl_desc, tmpfs_fifo_ioctl }, 71 { &vop_fcntl_desc, tmpfs_fifo_fcntl }, 72 { &vop_poll_desc, tmpfs_fifo_poll }, 73 { &vop_kqfilter_desc, tmpfs_fifo_kqfilter }, 74 { &vop_revoke_desc, tmpfs_fifo_revoke }, 75 { &vop_mmap_desc, tmpfs_fifo_mmap }, 76 { &vop_fsync_desc, tmpfs_fifo_fsync }, 77 { &vop_seek_desc, tmpfs_fifo_seek }, 78 { &vop_remove_desc, tmpfs_fifo_remove }, 79 { &vop_link_desc, tmpfs_fifo_link }, 80 { &vop_rename_desc, tmpfs_fifo_rename }, 81 { &vop_mkdir_desc, tmpfs_fifo_mkdir }, 82 { &vop_rmdir_desc, tmpfs_fifo_rmdir }, 83 { &vop_symlink_desc, tmpfs_fifo_symlink }, 84 { &vop_readdir_desc, tmpfs_fifo_readdir }, 85 { &vop_readlink_desc, tmpfs_fifo_readlink }, 86 { &vop_abortop_desc, tmpfs_fifo_abortop }, 87 { &vop_inactive_desc, tmpfs_fifo_inactive }, 88 { &vop_reclaim_desc, tmpfs_fifo_reclaim }, 89 { &vop_lock_desc, tmpfs_fifo_lock }, 90 { &vop_unlock_desc, tmpfs_fifo_unlock }, 91 { &vop_bmap_desc, tmpfs_fifo_bmap }, 92 { &vop_strategy_desc, tmpfs_fifo_strategy }, 93 { &vop_print_desc, tmpfs_fifo_print }, 94 { &vop_pathconf_desc, tmpfs_fifo_pathconf }, 95 { &vop_islocked_desc, tmpfs_fifo_islocked }, 96 { &vop_advlock_desc, tmpfs_fifo_advlock }, 97 { &vop_blkatoff_desc, tmpfs_fifo_blkatoff }, 98 { &vop_valloc_desc, tmpfs_fifo_valloc }, 99 { &vop_reallocblks_desc, tmpfs_fifo_reallocblks }, 100 { &vop_vfree_desc, tmpfs_fifo_vfree }, 101 { &vop_truncate_desc, tmpfs_fifo_truncate }, 102 { &vop_update_desc, tmpfs_fifo_update }, 103 { &vop_lease_desc, tmpfs_fifo_lease }, 104 { &vop_bwrite_desc, tmpfs_fifo_bwrite }, 105 { &vop_getpages_desc, tmpfs_fifo_getpages }, 106 { &vop_putpages_desc, tmpfs_fifo_putpages }, 107 { NULL, NULL } 108 }; 109 const struct vnodeopv_desc tmpfs_fifoop_opv_desc = 110 { &tmpfs_fifoop_p, tmpfs_fifoop_entries }; 111 112 /* --------------------------------------------------------------------- */ 113 114 int 115 tmpfs_fifo_close(void *v) 116 { 117 struct vnode *vp = ((struct vop_close_args *)v)->a_vp; 118 119 int error; 120 121 error = VOP_UPDATE(vp, NULL, NULL, UPDATE_CLOSE); 122 if (error != 0) 123 error = VOCALL(fifo_vnodeop_p, VOFFSET(vop_close), v); 124 125 return error; 126 } 127 128 /* --------------------------------------------------------------------- */ 129 130 int 131 tmpfs_fifo_read(void *v) 132 { 133 struct vnode *vp = ((struct vop_read_args *)v)->a_vp; 134 135 VP_TO_TMPFS_NODE(vp)->tn_status |= TMPFS_NODE_ACCESSED; 136 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), v); 137 } 138 139 /* --------------------------------------------------------------------- */ 140 141 int 142 tmpfs_fifo_write(void *v) 143 { 144 struct vnode *vp = ((struct vop_write_args *)v)->a_vp; 145 146 VP_TO_TMPFS_NODE(vp)->tn_status |= TMPFS_NODE_MODIFIED; 147 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), v); 148 } 149