1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1998,2001 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "dump.h" 30 #include <ftw.h> 31 #include <ulimit.h> 32 33 static int partial; 34 35 #ifdef __STDC__ 36 static dev_t devfromopts(struct mntent *); 37 static int lf_mark_root(dev_t, char *); 38 static int lf_ftw_mark(const char *, const struct stat64 *, int); 39 static void markino(ino_t); 40 #else 41 static dev_t devfromopts(); 42 static int lf_mark_root(); 43 static int lf_ftw_mark(); 44 static void markino(); 45 #endif 46 47 void 48 #ifdef __STDC__ 49 partial_check(void) 50 #else 51 partial_check() 52 #endif 53 { 54 struct mntent *mnt; 55 struct stat64 st; 56 57 if (stat64(disk, &st) < 0 || 58 (st.st_mode & S_IFMT) == S_IFCHR || 59 (st.st_mode & S_IFMT) == S_IFBLK) 60 return; 61 62 partial_dev = st.st_dev; 63 64 setmnttab(); 65 while (mnt = getmnttab()) { 66 st.st_dev = devfromopts(mnt); 67 if (st.st_dev == NODEV && 68 stat64(mnt->mnt_dir, &st) < 0) 69 continue; 70 if (partial_dev == st.st_dev) { 71 if (disk_dynamic) { 72 /* LINTED: disk is not NULL */ 73 free(disk); 74 } 75 disk = rawname(mnt->mnt_fsname); 76 disk_dynamic = (disk != mnt->mnt_fsname); 77 78 partial = 1; 79 incno = '0'; 80 uflag = 0; 81 return; 82 } 83 } 84 msg(gettext("`%s' is not on a locally mounted filesystem\n"), disk); 85 dumpabort(); 86 /*NOTREACHED*/ 87 } 88 89 /* 90 * The device id for the mount should be available in 91 * the mount option string as "dev=%04x". If it's there 92 * extract the device id and avoid having to stat. 93 */ 94 static dev_t 95 devfromopts(mnt) 96 struct mntent *mnt; 97 { 98 char *str; 99 100 str = hasmntopt(mnt, MNTINFO_DEV); 101 if (str != NULL && (str = strchr(str, '='))) 102 return ((dev_t)strtol(str + 1, (char **)NULL, 16)); 103 104 return (NODEV); 105 } 106 107 int 108 partial_mark(argc, argv) 109 int argc; 110 char **argv; 111 { 112 char *path; 113 struct stat64 st; 114 115 if (partial == 0) 116 return (1); 117 118 while (--argc >= 0) { 119 path = *argv++; 120 121 if (stat64(path, &st) < 0 || 122 st.st_dev != partial_dev) { 123 msg(gettext("`%s' is not on dump device `%s'\n"), 124 path, disk); 125 dumpabort(); 126 /*NOTREACHED*/ 127 } 128 129 if (lf_mark_root(partial_dev, path)) { 130 msg(gettext( 131 "Cannot find filesystem mount point for `%s'\n"), 132 path); 133 dumpabort(); 134 /*NOTREACHED*/ 135 } 136 137 /* LINTED this ulimit will always be < INT_MAX */ 138 if (lf_lftw(path, lf_ftw_mark, (int)ulimit(UL_GDESLIM, 0) / 2) 139 < 0) { 140 int saverr = errno; 141 msg(gettext("Error in %s (%s)\n"), 142 "ftw", strerror(saverr)); 143 dumpabort(); 144 /*NOTREACHED*/ 145 } 146 } 147 148 return (0); 149 } 150 151 /* mark directories between target and root */ 152 static int 153 lf_mark_root(dev, path) 154 dev_t dev; 155 char *path; 156 { 157 struct stat64 st; 158 char dotdot[MAXPATHLEN + 16]; 159 char *slash; 160 161 if (strlen(path) > sizeof (dotdot)) 162 return (1); 163 164 (void) strcpy(dotdot, path); 165 166 if (stat64(dotdot, &st) < 0) 167 return (1); 168 169 /* if target is a regular file, find directory */ 170 if ((st.st_mode & S_IFMT) != S_IFDIR) 171 if (slash = strrchr(dotdot, '/')) 172 /* "/file" -> "/" */ 173 if (slash == dotdot) 174 slash[1] = 0; 175 /* "dir/file" -> "dir" */ 176 else 177 slash[0] = 0; 178 else 179 /* "file" -> "." */ 180 (void) strcpy(dotdot, "."); 181 182 /* keep marking parent until we hit mount point */ 183 do { 184 if (stat64(dotdot, &st) < 0 || 185 (st.st_mode & S_IFMT) != S_IFDIR || 186 st.st_dev != dev) 187 return (1); 188 markino(st.st_ino); 189 if (strlen(dotdot) > (sizeof (dotdot) - 4)) 190 return (1); 191 (void) strcat(dotdot, "/.."); 192 } while (st.st_ino != 2); 193 194 return (0); 195 } 196 197 /*ARGSUSED*/ 198 static int 199 lf_ftw_mark(name, st, flag) 200 #ifdef __STDC__ 201 const char *name; 202 const struct stat64 *st; 203 #else 204 char *name; 205 struct stat64 *st; 206 #endif 207 int flag; 208 { 209 if (flag != FTW_NS) { 210 /* LINTED ufs only uses the lower 32 bits */ 211 markino((ino_t)st->st_ino); 212 } 213 return (0); 214 } 215 216 static void 217 markino(i) 218 ino_t i; 219 { 220 struct dinode *dp; 221 222 dp = getino(ino = i); 223 mark(dp); 224 } 225