1 /* $NetBSD: mount_ptyfs.c,v 1.18 2020/07/26 08:20:23 mlelstv Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Jan-Simon Pendry. 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1990, 1992 Jan-Simon Pendry 37 * 38 * This code is derived from software contributed to Berkeley by 39 * Jan-Simon Pendry. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by the University of 52 * California, Berkeley and its contributors. 53 * 4. Neither the name of the University nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 */ 69 70 #include <sys/cdefs.h> 71 #ifndef lint 72 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\ 73 The Regents of the University of California. All rights reserved."); 74 #endif /* not lint */ 75 76 #ifndef lint 77 #if 0 78 static char sccsid[] = "@(#)mount_ptyfs.c 8.3 (Berkeley) 5/4/95"; 79 #else 80 __RCSID("$NetBSD: mount_ptyfs.c,v 1.18 2020/07/26 08:20:23 mlelstv Exp $"); 81 #endif 82 #endif /* not lint */ 83 84 #include <sys/param.h> 85 #include <sys/types.h> 86 #include <sys/mount.h> 87 #include <sys/stat.h> 88 89 #include <fs/ptyfs/ptyfs.h> 90 91 #include <err.h> 92 #include <unistd.h> 93 #include <stdio.h> 94 #include <stdlib.h> 95 #include <string.h> 96 #include <grp.h> 97 #include <util.h> 98 99 #include <mntopts.h> 100 101 #include "mountprog.h" 102 103 #define ALTF_GROUP 0x1 104 #define ALTF_MODE 0x2 105 #define ALTF_CHROOT 0x4 /* compat */ 106 107 static const struct mntopt mopts[] = { 108 MOPT_STDOPTS, 109 MOPT_GETARGS, 110 MOPT_NOATIME, 111 MOPT_RELATIME, 112 { "group", 0, ALTF_GROUP, 1 }, 113 { "mode", 0, ALTF_MODE, 1 }, 114 { "chroot", 0, ALTF_CHROOT, 1 }, /* compat */ 115 MOPT_NULL, 116 }; 117 118 int mount_ptyfs(int argc, char **argv); 119 120 static gid_t getgrp(const char *name); 121 __dead static void usage(void); 122 123 #ifndef MOUNT_NOMAIN 124 int 125 main(int argc, char *argv[]) 126 { 127 return mount_ptyfs(argc, argv); 128 } 129 #endif 130 131 static gid_t 132 getgrp(const char *name) 133 { 134 char *ep; 135 struct group *grp; 136 long l; 137 138 if (name == NULL) 139 errx(1, "Missing group name"); 140 141 l = strtol(name, &ep, 0); 142 143 if (name == ep || *ep) 144 grp = getgrnam(name); 145 else 146 grp = getgrgid((gid_t)l); 147 148 if (grp == NULL) 149 errx(1, "Cannot find group `%s'", name); 150 151 return grp->gr_gid; 152 } 153 154 155 int 156 mount_ptyfs(int argc, char *argv[]) 157 { 158 int ch, mntflags = 0, altflags = 0; 159 struct ptyfs_args args; 160 mntoptparse_t mp; 161 char canon_dir[MAXPATHLEN]; 162 163 164 setprogname(argv[0]); 165 166 args.version = PTYFS_ARGSVERSION; 167 args.gid = getgrp("tty"); 168 args.mode = S_IRUSR|S_IWUSR|S_IWGRP; 169 args.flags = 0; 170 171 while ((ch = getopt(argc, argv, "cg:m:o:")) != -1) 172 switch (ch) { 173 case 'c': /* compat */ 174 compat: 175 warnx("-c and -o chroot options are obsolete"); 176 break; 177 case 'o': 178 altflags = 0; 179 mp = getmntopts(optarg, mopts, &mntflags, &altflags); 180 if (mp == NULL) 181 err(1, "getmntopts"); 182 if (altflags & ALTF_GROUP) 183 args.gid = getgrp(getmntoptstr(mp, "group")); 184 if (altflags & ALTF_MODE) 185 args.mode = (mode_t)getmntoptnum(mp, "mode"); 186 if (altflags & ALTF_CHROOT) 187 goto compat; 188 freemntopts(mp); 189 break; 190 case 'g': 191 args.gid = getgrp(optarg); 192 break; 193 case 'm': 194 args.mode = (mode_t)strtol(optarg, NULL, 0); 195 break; 196 case '?': 197 default: 198 usage(); 199 } 200 201 argc -= optind; 202 argv += optind; 203 204 if (argc != 2) 205 usage(); 206 207 pathadj(argv[1], canon_dir); 208 209 if (mount(MOUNT_PTYFS, canon_dir, mntflags, &args, sizeof args) == -1) 210 err(1, "ptyfs on %s", canon_dir); 211 if (mntflags & MNT_GETARGS) { 212 printf("version=%d, gid=%lu, mode=0%o\n", args.version, 213 (unsigned long)args.gid, args.mode); 214 } 215 return 0; 216 } 217 218 static void 219 usage(void) 220 { 221 (void)fprintf(stderr, 222 "Usage: %s [-g <group|gid>] [-m <mode>] [-o options] " 223 "ptyfs mountpoint\n", getprogname()); 224 exit(1); 225 } 226
Indexes created Sun Oct 25 00:26:45 UTC 2026