1 /* $NetBSD: fifo.h,v 1.28 2022/10/26 23:40:20 riastradh Exp $ */ 2 3 /* 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)fifo.h 8.6 (Berkeley) 5/21/95 32 */ 33 34 #ifndef _MISCFS_FIFOFS_FIFO_H_ 35 #define _MISCFS_FIFOFS_FIFO_H_ 36 37 #include <sys/vnode.h> 38 39 #include <miscfs/genfs/genfs.h> 40 41 extern const struct vnodeopv_desc fifo_vnodeop_opv_desc; 42 43 extern int (**fifo_vnodeop_p)(void *); 44 45 /* 46 * This macro provides an initializer list for the fs-independent part 47 * of a filesystem's fifo vnode ops descriptor table. We still need 48 * such a table in every filesystem, but we can at least avoid the 49 * cutpaste. 50 * 51 * This contains these ops: 52 * parsepath lookup 53 * create whiteout mknod open fallocate fdiscard ioctl poll kqfilter 54 * revoke mmap seek remove link rename mkdir rmdir symlink readdir 55 * readlink abortop bmap pathconf advlock getpages putpages 56 * 57 * The filesystem should provide these ops that need to be its own: 58 * access and accessx 59 * getattr 60 * setattr 61 * fcntl 62 * inactive 63 * reclaim 64 * lock 65 * unlock 66 * strategy 67 * print (should probably also call fifo_print) 68 * islocked 69 * bwrite (normally vn_bwrite) 70 * openextattr 71 * closeextattr 72 * getextattr 73 * setextattr 74 * listextattr 75 * deleteextattr 76 * getacl 77 * setacl 78 * aclcheck 79 * 80 * The filesystem should also provide these ops that some filesystems 81 * do their own things with: 82 * close 83 * read 84 * write 85 * fsync 86 * In most cases "their own things" means adjust timestamps and call 87 * fifo_foo (currently via vn_fifo_bypass). For fsync it varies. 88 * 89 * Note that because the op descriptor tables are unordered it does not 90 * matter where in the table this macro goes (except I think default 91 * still needs to be first...) 92 * 93 * XXX currently all the ops are vn_fifo_bypass, which does an 94 * indirect call via the fifofs ops table (externed above), which 95 * someone decided was preferable to exposing the function 96 * definitions. This includes (for now at least) the ones that are 97 * sent to genfs by that table. This should probably be changed, but 98 * not just yet. 99 */ 100 #define GENFS_FIFOOP_ENTRIES \ 101 { &vop_parsepath_desc, genfs_badop }, /* parsepath */ \ 102 { &vop_lookup_desc, vn_fifo_bypass }, /* lookup */ \ 103 { &vop_create_desc, vn_fifo_bypass }, /* create */ \ 104 { &vop_whiteout_desc, vn_fifo_bypass }, /* whiteout */ \ 105 { &vop_mknod_desc, vn_fifo_bypass }, /* mknod */ \ 106 { &vop_open_desc, vn_fifo_bypass }, /* open */ \ 107 { &vop_fallocate_desc, vn_fifo_bypass }, /* fallocate */ \ 108 { &vop_fdiscard_desc, vn_fifo_bypass }, /* fdiscard */ \ 109 { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ \ 110 { &vop_poll_desc, vn_fifo_bypass }, /* poll */ \ 111 { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ \ 112 { &vop_revoke_desc, vn_fifo_bypass }, /* revoke */ \ 113 { &vop_mmap_desc, vn_fifo_bypass }, /* mmap */ \ 114 { &vop_seek_desc, vn_fifo_bypass }, /* seek */ \ 115 { &vop_remove_desc, vn_fifo_bypass }, /* remove */ \ 116 { &vop_link_desc, vn_fifo_bypass }, /* link */ \ 117 { &vop_rename_desc, vn_fifo_bypass }, /* rename */ \ 118 { &vop_mkdir_desc, vn_fifo_bypass }, /* mkdir */ \ 119 { &vop_rmdir_desc, vn_fifo_bypass }, /* rmdir */ \ 120 { &vop_symlink_desc, vn_fifo_bypass }, /* symlink */ \ 121 { &vop_readdir_desc, vn_fifo_bypass }, /* readdir */ \ 122 { &vop_readlink_desc, vn_fifo_bypass }, /* readlink */ \ 123 { &vop_abortop_desc, vn_fifo_bypass }, /* abortop */ \ 124 { &vop_bmap_desc, vn_fifo_bypass }, /* bmap */ \ 125 { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ \ 126 { &vop_advlock_desc, vn_fifo_bypass }, /* advlock */ \ 127 { &vop_getpages_desc, genfs_badop }, /* getpages */ \ 128 { &vop_putpages_desc, vn_fifo_bypass } /* putpages */ 129 130 #endif /* _MISCFS_FIFOFS_FIFO_H_ */ 131