fifo.h revision 1.27
1 1.27 dholland /* $NetBSD: fifo.h,v 1.27 2021/07/18 23:56:13 dholland Exp $ */ 2 1.8 cgd 3 1.1 cgd /* 4 1.7 mycroft * Copyright (c) 1991, 1993 5 1.7 mycroft * The Regents of the University of California. All rights reserved. 6 1.1 cgd * 7 1.1 cgd * Redistribution and use in source and binary forms, with or without 8 1.1 cgd * modification, are permitted provided that the following conditions 9 1.1 cgd * are met: 10 1.1 cgd * 1. Redistributions of source code must retain the above copyright 11 1.1 cgd * notice, this list of conditions and the following disclaimer. 12 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 cgd * notice, this list of conditions and the following disclaimer in the 14 1.1 cgd * documentation and/or other materials provided with the distribution. 15 1.20 agc * 3. Neither the name of the University nor the names of its contributors 16 1.1 cgd * may be used to endorse or promote products derived from this software 17 1.1 cgd * without specific prior written permission. 18 1.1 cgd * 19 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 1.1 cgd * SUCH DAMAGE. 30 1.1 cgd * 31 1.13 fvdl * @(#)fifo.h 8.6 (Berkeley) 5/21/95 32 1.1 cgd */ 33 1.14 sommerfe 34 1.22 xtraeme extern int (**fifo_vnodeop_p)(void *); 35 1.27 dholland 36 1.27 dholland /* 37 1.27 dholland * This macro provides an initializer list for the fs-independent part 38 1.27 dholland * of a filesystem's fifo vnode ops descriptor table. We still need 39 1.27 dholland * such a table in every filesystem, but we can at least avoid the 40 1.27 dholland * cutpaste. 41 1.27 dholland * 42 1.27 dholland * This contains these ops: 43 1.27 dholland * parsepath lookup 44 1.27 dholland * create whiteout mknod open fallocate fdiscard ioctl poll kqfilter 45 1.27 dholland * revoke mmap seek remove link rename mkdir rmdir symlink readdir 46 1.27 dholland * readlink abortop bmap pathconf advlock getpages putpages 47 1.27 dholland * 48 1.27 dholland * The filesystem should provide these ops that need to be its own: 49 1.27 dholland * access and accessx 50 1.27 dholland * getattr 51 1.27 dholland * setattr 52 1.27 dholland * fcntl 53 1.27 dholland * inactive 54 1.27 dholland * reclaim 55 1.27 dholland * lock 56 1.27 dholland * unlock 57 1.27 dholland * strategy 58 1.27 dholland * print (should probably also call fifo_print) 59 1.27 dholland * islocked 60 1.27 dholland * bwrite (normally vn_bwrite) 61 1.27 dholland * openextattr 62 1.27 dholland * closeextattr 63 1.27 dholland * getextattr 64 1.27 dholland * setextattr 65 1.27 dholland * listextattr 66 1.27 dholland * deleteextattr 67 1.27 dholland * getacl 68 1.27 dholland * setacl 69 1.27 dholland * aclcheck 70 1.27 dholland * 71 1.27 dholland * The filesystem should also provide these ops that some filesystems 72 1.27 dholland * do their own things with: 73 1.27 dholland * close 74 1.27 dholland * read 75 1.27 dholland * write 76 1.27 dholland * fsync 77 1.27 dholland * In most cases "their own things" means adjust timestamps and call 78 1.27 dholland * fifo_foo (currently via vn_fifo_bypass). For fsync it varies. 79 1.27 dholland * 80 1.27 dholland * Note that because the op descriptor tables are unordered it does not 81 1.27 dholland * matter where in the table this macro goes (except I think default 82 1.27 dholland * still needs to be first...) 83 1.27 dholland * 84 1.27 dholland * XXX currently all the ops are vn_fifo_bypass, which does an 85 1.27 dholland * indirect call via the fifofs ops table (externed above), which 86 1.27 dholland * someone decided was preferable to exposing the function 87 1.27 dholland * definitions. This includes (for now at least) the ones that are 88 1.27 dholland * sent to genfs by that table. This should probably be changed, but 89 1.27 dholland * not just yet. 90 1.27 dholland */ 91 1.27 dholland #define GENFS_FIFOOP_ENTRIES \ 92 1.27 dholland { &vop_parsepath_desc, genfs_badop }, /* parsepath */ \ 93 1.27 dholland { &vop_lookup_desc, vn_fifo_bypass }, /* lookup */ \ 94 1.27 dholland { &vop_create_desc, vn_fifo_bypass }, /* create */ \ 95 1.27 dholland { &vop_whiteout_desc, vn_fifo_bypass }, /* whiteout */ \ 96 1.27 dholland { &vop_mknod_desc, vn_fifo_bypass }, /* mknod */ \ 97 1.27 dholland { &vop_open_desc, vn_fifo_bypass }, /* open */ \ 98 1.27 dholland { &vop_fallocate_desc, vn_fifo_bypass }, /* fallocate */ \ 99 1.27 dholland { &vop_fdiscard_desc, vn_fifo_bypass }, /* fdiscard */ \ 100 1.27 dholland { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ \ 101 1.27 dholland { &vop_poll_desc, vn_fifo_bypass }, /* poll */ \ 102 1.27 dholland { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ \ 103 1.27 dholland { &vop_revoke_desc, vn_fifo_bypass }, /* revoke */ \ 104 1.27 dholland { &vop_mmap_desc, vn_fifo_bypass }, /* mmap */ \ 105 1.27 dholland { &vop_seek_desc, vn_fifo_bypass }, /* seek */ \ 106 1.27 dholland { &vop_remove_desc, vn_fifo_bypass }, /* remove */ \ 107 1.27 dholland { &vop_link_desc, vn_fifo_bypass }, /* link */ \ 108 1.27 dholland { &vop_rename_desc, vn_fifo_bypass }, /* rename */ \ 109 1.27 dholland { &vop_mkdir_desc, vn_fifo_bypass }, /* mkdir */ \ 110 1.27 dholland { &vop_rmdir_desc, vn_fifo_bypass }, /* rmdir */ \ 111 1.27 dholland { &vop_symlink_desc, vn_fifo_bypass }, /* symlink */ \ 112 1.27 dholland { &vop_readdir_desc, vn_fifo_bypass }, /* readdir */ \ 113 1.27 dholland { &vop_readlink_desc, vn_fifo_bypass }, /* readlink */ \ 114 1.27 dholland { &vop_abortop_desc, vn_fifo_bypass }, /* abortop */ \ 115 1.27 dholland { &vop_bmap_desc, vn_fifo_bypass }, /* bmap */ \ 116 1.27 dholland { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ \ 117 1.27 dholland { &vop_advlock_desc, vn_fifo_bypass }, /* advlock */ \ 118 1.27 dholland { &vop_getpages_desc, genfs_badop }, /* getpages */ \ 119 1.27 dholland { &vop_putpages_desc, vn_fifo_bypass } /* putpages */ 120
Indexes created Wed Sep 24 15:09:51 GMT 2025