| 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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| 2 | /* ***** BEGIN LICENSE BLOCK *****
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| 3 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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| 4 | *
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| 5 | * The contents of this file are subject to the Mozilla Public License Version
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| 6 | * 1.1 (the "License"); you may not use this file except in compliance with
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| 7 | * the License. You may obtain a copy of the License at
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| 8 | * http://www.mozilla.org/MPL/
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| 9 | *
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| 10 | * Software distributed under the License is distributed on an "AS IS" basis,
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| 11 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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| 12 | * for the specific language governing rights and limitations under the
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| 13 | * License.
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| 14 | *
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| 15 | * The Original Code is the Netscape Portable Runtime (NSPR).
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| 16 | *
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| 17 | * The Initial Developer of the Original Code is
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| 18 | * Netscape Communications Corporation.
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| 19 | * Portions created by the Initial Developer are Copyright (C) 1998-2000
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| 20 | * the Initial Developer. All Rights Reserved.
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| 21 | *
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| 22 | * Contributor(s):
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| 23 | *
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| 24 | * Alternatively, the contents of this file may be used under the terms of
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| 25 | * either the GNU General Public License Version 2 or later (the "GPL"), or
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| 26 | * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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| 27 | * in which case the provisions of the GPL or the LGPL are applicable instead
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| 28 | * of those above. If you wish to allow use of your version of this file only
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| 29 | * under the terms of either the GPL or the LGPL, and not to allow others to
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| 30 | * use your version of this file under the terms of the MPL, indicate your
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| 31 | * decision by deleting the provisions above and replace them with the notice
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| 32 | * and other provisions required by the GPL or the LGPL. If you do not delete
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| 33 | * the provisions above, a recipient may use your version of this file under
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| 34 | * the terms of any one of the MPL, the GPL or the LGPL.
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| 35 | *
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| 36 | * ***** END LICENSE BLOCK ***** */
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| 37 |
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| 38 | /*
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| 39 | ** Netscape portable install command.
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| 40 | **
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| 41 | ** Brendan Eich, 7/20/95
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| 42 | */
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| 43 | #include <stdio.h> /* OSF/1 requires this before grp.h, so put it first */
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| 44 | #include <assert.h>
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| 45 | #include <fcntl.h>
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| 46 | #include <grp.h>
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| 47 | #include <pwd.h>
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| 48 | #include <stdlib.h>
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| 49 | #include <string.h>
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| 50 | #include <unistd.h>
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| 51 | #include <utime.h>
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| 52 | #include <sys/types.h>
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| 53 | #include <sys/stat.h>
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| 54 | #include <dirent.h>
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| 55 | #include <errno.h>
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| 56 | #include <stdarg.h>
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| 57 | #ifdef USE_REENTRANT_LIBC
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| 58 | #include "libc_r.h"
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| 59 | #endif /* USE_REENTRANT_LIBC */
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| 60 |
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| 61 | #include "pathsub.h"
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| 62 |
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| 63 | #define HAVE_FCHMOD
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| 64 |
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| 65 | #if defined(BEOS)
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| 66 | #undef HAVE_FCHMOD
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| 67 | #endif
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| 68 |
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| 69 | /*
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| 70 | * Does getcwd() take NULL as the first argument and malloc
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| 71 | * the result buffer?
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| 72 | */
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| 73 | #if !defined(DARWIN) && !defined(NEXTSTEP) && !defined(VMS)
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| 74 | #define GETCWD_CAN_MALLOC
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| 75 | #endif
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| 76 |
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| 77 | #ifdef NEXTSTEP
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| 78 | #include <bsd/libc.h>
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| 79 |
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| 80 | /*
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| 81 | ** balazs.pataki@sztaki.hu: The getcwd is broken in NEXTSTEP (returns 0),
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| 82 | ** when called on a mounted fs. Did anyone notice this? Here's an ugly
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| 83 | ** workaround ...
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| 84 | */
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| 85 | #define getcwd(b,s) my_getcwd(b,s)
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| 86 |
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| 87 | static char *
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| 88 | my_getcwd (char *buf, size_t size)
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| 89 | {
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| 90 | FILE *pwd = popen("pwd", "r");
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| 91 | char *result = fgets(buf, size, pwd);
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| 92 |
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| 93 | if (result) {
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| 94 | buf[strlen(buf)-1] = '\0';
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| 95 | }
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| 96 | pclose (pwd);
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| 97 | return buf;
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| 98 | }
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| 99 | #endif /* NEXTSTEP */
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| 100 |
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| 101 | #ifdef LINUX
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| 102 | #include <getopt.h>
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| 103 | #endif
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| 104 |
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| 105 | #if defined(SCO) || defined(UNIXWARE) || defined(SNI) || defined(NCR) || defined(NEC) || defined(NEXTSTEP)
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| 106 | #if !defined(S_ISLNK) && defined(S_IFLNK)
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| 107 | #define S_ISLNK(a) (((a) & S_IFMT) == S_IFLNK)
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| 108 | #endif
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| 109 | #endif
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| 110 |
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| 111 | #if defined(SNI)
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| 112 | extern int fchmod(int fildes, mode_t mode);
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| 113 | #endif
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| 114 |
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| 115 | #ifdef QNX
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| 116 | #define d_ino d_stat.st_ino
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| 117 | #endif
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| 118 |
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| 119 | static void
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| 120 | usage(void)
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| 121 | {
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| 122 | fprintf(stderr,
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| 123 | "usage: %s [-C cwd] [-L linkprefix] [-m mode] [-o owner] [-g group]\n"
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| 124 | " %*s [-DdltR] file [file ...] directory\n",
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| 125 | program, (int)strlen(program), "");
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| 126 | exit(2);
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| 127 | }
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| 128 |
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| 129 | static int
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| 130 | mkdirs(char *path, mode_t mode)
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| 131 | {
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| 132 | char *cp;
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| 133 | struct stat sb;
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| 134 | int res;
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| 135 |
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| 136 | while (*path == '/' && path[1] == '/')
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| 137 | path++;
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| 138 | while ((cp = strrchr(path, '/')) && cp[1] == '\0')
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| 139 | *cp = '\0';
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| 140 | if (cp && cp != path) {
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| 141 | *cp = '\0';
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| 142 | if ((stat(path, &sb) < 0 || !S_ISDIR(sb.st_mode)) &&
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| 143 | mkdirs(path, mode) < 0) {
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| 144 | return -1;
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| 145 | }
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| 146 | *cp = '/';
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| 147 | }
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| 148 | res = mkdir(path, mode);
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| 149 | if ((res != 0) && (errno == EEXIST))
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| 150 | return 0;
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| 151 | else
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| 152 | return res;
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| 153 | }
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| 154 |
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| 155 | static uid_t
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| 156 | touid(char *owner)
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| 157 | {
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| 158 | struct passwd *pw;
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| 159 | uid_t uid;
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| 160 | char *cp;
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| 161 |
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| 162 | pw = getpwnam(owner);
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| 163 | if (pw)
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| 164 | return pw->pw_uid;
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| 165 | uid = strtol(owner, &cp, 0);
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| 166 | if (uid == 0 && cp == owner)
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| 167 | fail("cannot find uid for %s", owner);
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| 168 | return uid;
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| 169 | }
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| 170 |
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| 171 | static gid_t
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| 172 | togid(char *group)
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| 173 | {
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| 174 | struct group *gr;
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| 175 | gid_t gid;
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| 176 | char *cp;
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| 177 |
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| 178 | gr = getgrnam(group);
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| 179 | if (gr)
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| 180 | return gr->gr_gid;
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| 181 | gid = strtol(group, &cp, 0);
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| 182 | if (gid == 0 && cp == group)
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| 183 | fail("cannot find gid for %s", group);
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| 184 | return gid;
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| 185 | }
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| 186 |
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| 187 | int
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| 188 | main(int argc, char **argv)
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| 189 | {
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| 190 | int onlydir, dodir, dolink, dorelsymlink, dotimes, opt, len, lplen, tdlen, bnlen, exists, fromfd, tofd, cc, wc;
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| 191 | mode_t mode = 0755;
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| 192 | char *linkprefix, *owner, *group, *cp, *cwd, *todir, *toname, *name, *base, *linkname, *bp, buf[BUFSIZ];
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| 193 | uid_t uid;
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| 194 | gid_t gid;
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| 195 | struct stat sb, tosb;
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| 196 | struct utimbuf utb;
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| 197 |
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| 198 | program = argv[0];
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| 199 | cwd = linkname = linkprefix = owner = group = 0;
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| 200 | onlydir = dodir = dolink = dorelsymlink = dotimes = lplen = 0;
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| 201 |
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| 202 | while ((opt = getopt(argc, argv, "C:DdlL:Rm:o:g:t")) != EOF) {
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| 203 | switch (opt) {
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| 204 | case 'C':
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| 205 | cwd = optarg;
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| 206 | break;
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| 207 | case 'D':
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| 208 | onlydir = 1;
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| 209 | break;
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| 210 | case 'd':
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| 211 | dodir = 1;
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| 212 | break;
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| 213 | case 'l':
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| 214 | dolink = 1;
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| 215 | break;
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| 216 | case 'L':
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| 217 | linkprefix = optarg;
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| 218 | lplen = strlen(linkprefix);
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| 219 | dolink = 1;
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| 220 | break;
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| 221 | case 'R':
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| 222 | dolink = dorelsymlink = 1;
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| 223 | break;
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| 224 | case 'm':
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| 225 | mode = strtoul(optarg, &cp, 8);
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| 226 | if (mode == 0 && cp == optarg)
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| 227 | usage();
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| 228 | break;
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| 229 | case 'o':
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| 230 | owner = optarg;
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| 231 | break;
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| 232 | case 'g':
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| 233 | group = optarg;
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| 234 | break;
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| 235 | case 't':
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| 236 | dotimes = 1;
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| 237 | break;
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| 238 | default:
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| 239 | usage();
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| 240 | }
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| 241 | }
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| 242 |
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| 243 | argc -= optind;
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| 244 | argv += optind;
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| 245 | if (argc < 2 - onlydir)
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| 246 | usage();
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| 247 |
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| 248 | todir = argv[argc-1];
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| 249 | if ((stat(todir, &sb) < 0 || !S_ISDIR(sb.st_mode)) &&
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| 250 | mkdirs(todir, 0777) < 0) {
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| 251 | fail("cannot make directory %s", todir);
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| 252 | }
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| 253 | if (onlydir)
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| 254 | return 0;
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| 255 |
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| 256 | if (!cwd) {
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| 257 | #ifdef GETCWD_CAN_MALLOC
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| 258 | cwd = getcwd(0, PATH_MAX);
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| 259 | #else
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| 260 | cwd = malloc(PATH_MAX + 1);
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| 261 | cwd = getcwd(cwd, PATH_MAX);
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| 262 | #endif
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| 263 | }
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| 264 | xchdir(todir);
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| 265 | #ifdef GETCWD_CAN_MALLOC
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| 266 | todir = getcwd(0, PATH_MAX);
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| 267 | #else
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| 268 | todir = malloc(PATH_MAX + 1);
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| 269 | todir = getcwd(todir, PATH_MAX);
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| 270 | #endif
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| 271 | tdlen = strlen(todir);
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| 272 | xchdir(cwd);
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| 273 | tdlen = strlen(todir);
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| 274 |
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| 275 | uid = owner ? touid(owner) : -1;
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| 276 | gid = group ? togid(group) : -1;
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| 277 |
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| 278 | while (--argc > 0) {
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| 279 | name = *argv++;
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| 280 | len = strlen(name);
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| 281 | base = xbasename(name);
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| 282 | bnlen = strlen(base);
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| 283 | toname = (char*)xmalloc(tdlen + 1 + bnlen + 1);
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| 284 | sprintf(toname, "%s/%s", todir, base);
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| 285 | exists = (lstat(toname, &tosb) == 0);
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| 286 |
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| 287 | if (dodir) {
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| 288 | /* -d means create a directory, always */
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| 289 | if (exists && !S_ISDIR(tosb.st_mode)) {
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| 290 | (void) unlink(toname);
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| 291 | exists = 0;
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| 292 | }
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| 293 | if (!exists && mkdir(toname, mode) < 0)
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| 294 | fail("cannot make directory %s", toname);
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| 295 | if ((owner || group) && chown(toname, uid, gid) < 0)
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| 296 | fail("cannot change owner of %s", toname);
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| 297 | } else if (dolink) {
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| 298 | if (*name == '/') {
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| 299 | /* source is absolute pathname, link to it directly */
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| 300 | linkname = 0;
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| 301 | } else {
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| 302 | if (linkprefix) {
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| 303 | /* -L implies -l and prefixes names with a $cwd arg. */
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| 304 | len += lplen + 1;
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| 305 | linkname = (char*)xmalloc(len + 1);
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| 306 | sprintf(linkname, "%s/%s", linkprefix, name);
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| 307 | } else if (dorelsymlink) {
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| 308 | /* Symlink the relative path from todir to source name. */
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| 309 | linkname = (char*)xmalloc(PATH_MAX);
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| 310 |
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| 311 | if (*todir == '/') {
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| 312 | /* todir is absolute: skip over common prefix. */
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| 313 | lplen = relatepaths(todir, cwd, linkname);
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| 314 | strcpy(linkname + lplen, name);
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| 315 | } else {
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| 316 | /* todir is named by a relative path: reverse it. */
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| 317 | reversepath(todir, name, len, linkname);
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| 318 | xchdir(cwd);
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| 319 | }
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| 320 |
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| 321 | len = strlen(linkname);
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| 322 | }
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| 323 | name = linkname;
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| 324 | }
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| 325 |
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| 326 | /* Check for a pre-existing symlink with identical content. */
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| 327 | if (exists &&
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| 328 | (!S_ISLNK(tosb.st_mode) ||
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| 329 | readlink(toname, buf, sizeof buf) != len ||
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| 330 | strncmp(buf, name, len) != 0)) {
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| 331 | (void) (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(toname);
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| 332 | exists = 0;
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| 333 | }
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| 334 | if (!exists && symlink(name, toname) < 0)
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| 335 | fail("cannot make symbolic link %s", toname);
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| 336 | #ifdef HAVE_LCHOWN
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| 337 | if ((owner || group) && lchown(toname, uid, gid) < 0)
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| 338 | fail("cannot change owner of %s", toname);
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| 339 | #endif
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| 340 |
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| 341 | if (linkname) {
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| 342 | free(linkname);
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| 343 | linkname = 0;
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| 344 | }
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| 345 | } else {
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| 346 | /* Copy from name to toname, which might be the same file. */
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| 347 | fromfd = open(name, O_RDONLY);
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| 348 | if (fromfd < 0 || fstat(fromfd, &sb) < 0)
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| 349 | fail("cannot access %s", name);
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| 350 | if (exists && (!S_ISREG(tosb.st_mode) || access(toname, W_OK) < 0))
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| 351 | (void) (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(toname);
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| 352 | tofd = open(toname, O_CREAT | O_WRONLY, 0666);
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| 353 | if (tofd < 0)
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| 354 | fail("cannot create %s", toname);
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| 355 |
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| 356 | bp = buf;
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| 357 | while ((cc = read(fromfd, bp, sizeof buf)) > 0) {
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| 358 | while ((wc = write(tofd, bp, cc)) > 0) {
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| 359 | if ((cc -= wc) == 0)
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| 360 | break;
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| 361 | bp += wc;
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| 362 | }
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| 363 | if (wc < 0)
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| 364 | fail("cannot write to %s", toname);
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| 365 | }
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| 366 | if (cc < 0)
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| 367 | fail("cannot read from %s", name);
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| 368 |
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| 369 | if (ftruncate(tofd, sb.st_size) < 0)
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| 370 | fail("cannot truncate %s", toname);
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| 371 | /*
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| 372 | ** On OpenVMS we can't chmod() until the file is closed, and we
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| 373 | ** have to utime() last since fchown/chmod alter the timestamps.
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| 374 | */
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| 375 | #ifndef VMS
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| 376 | if (dotimes) {
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| 377 | utb.actime = sb.st_atime;
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| 378 | utb.modtime = sb.st_mtime;
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| 379 | if (utime(toname, &utb) < 0)
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| 380 | fail("cannot set times of %s", toname);
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| 381 | }
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| 382 | #ifdef HAVE_FCHMOD
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| 383 | if (fchmod(tofd, mode) < 0)
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| 384 | #else
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| 385 | if (chmod(toname, mode) < 0)
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| 386 | #endif
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| 387 | fail("cannot change mode of %s", toname);
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| 388 | #endif
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| 389 | if ((owner || group) && fchown(tofd, uid, gid) < 0)
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| 390 | fail("cannot change owner of %s", toname);
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| 391 |
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| 392 | /* Must check for delayed (NFS) write errors on close. */
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| 393 | if (close(tofd) < 0)
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| 394 | fail("cannot write to %s", toname);
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| 395 | close(fromfd);
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| 396 | #ifdef VMS
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| 397 | if (chmod(toname, mode) < 0)
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| 398 | fail("cannot change mode of %s", toname);
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| 399 | if (dotimes) {
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| 400 | utb.actime = sb.st_atime;
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| 401 | utb.modtime = sb.st_mtime;
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| 402 | if (utime(toname, &utb) < 0)
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| 403 | fail("cannot set times of %s", toname);
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| 404 | }
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| 405 | #endif
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| 406 | }
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| 407 |
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| 408 | free(toname);
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| 409 | }
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| 410 |
|
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| 411 | free(cwd);
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| 412 | free(todir);
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| 413 | return 0;
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| 414 | }
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| 415 |
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| 416 | /*
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| 417 | ** Pathname subroutines.
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| 418 | **
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| 419 | ** Brendan Eich, 8/29/95
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| 420 | */
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| 421 |
|
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| 422 | char *program;
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| 423 |
|
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| 424 | void
|
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| 425 | fail(char *format, ...)
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| 426 | {
|
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| 427 | int error;
|
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| 428 | va_list ap;
|
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| 429 |
|
|---|
| 430 | #ifdef USE_REENTRANT_LIBC
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| 431 | R_STRERROR_INIT_R();
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| 432 | #endif
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| 433 |
|
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| 434 | error = errno;
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|---|
| 435 | fprintf(stderr, "%s: ", program);
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| 436 | va_start(ap, format);
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|---|
| 437 | vfprintf(stderr, format, ap);
|
|---|
| 438 | va_end(ap);
|
|---|
| 439 | if (error)
|
|---|
| 440 |
|
|---|
| 441 | #ifdef USE_REENTRANT_LIBC
|
|---|
| 442 | R_STRERROR_R(errno);
|
|---|
| 443 | fprintf(stderr, ": %s", r_strerror_r);
|
|---|
| 444 | #else
|
|---|
| 445 | fprintf(stderr, ": %s", strerror(errno));
|
|---|
| 446 | #endif
|
|---|
| 447 |
|
|---|
| 448 | putc('\n', stderr);
|
|---|
| 449 | exit(1);
|
|---|
| 450 | }
|
|---|
| 451 |
|
|---|
| 452 | char *
|
|---|
| 453 | getcomponent(char *path, char *name)
|
|---|
| 454 | {
|
|---|
| 455 | if (*path == '\0')
|
|---|
| 456 | return 0;
|
|---|
| 457 | if (*path == '/') {
|
|---|
| 458 | *name++ = '/';
|
|---|
| 459 | } else {
|
|---|
| 460 | do {
|
|---|
| 461 | *name++ = *path++;
|
|---|
| 462 | } while (*path != '/' && *path != '\0');
|
|---|
| 463 | }
|
|---|
| 464 | *name = '\0';
|
|---|
| 465 | while (*path == '/')
|
|---|
| 466 | path++;
|
|---|
| 467 | return path;
|
|---|
| 468 | }
|
|---|
| 469 |
|
|---|
| 470 | #ifdef UNIXWARE_READDIR_BUFFER_TOO_SMALL
|
|---|
| 471 | /* Sigh. The static buffer in Unixware's readdir is too small. */
|
|---|
| 472 | struct dirent * readdir(DIR *d)
|
|---|
| 473 | {
|
|---|
| 474 | static struct dirent *buf = NULL;
|
|---|
| 475 | #define MAX_PATH_LEN 1024
|
|---|
| 476 |
|
|---|
| 477 |
|
|---|
| 478 | if(buf == NULL)
|
|---|
| 479 | buf = (struct dirent *) malloc(sizeof(struct dirent) + MAX_PATH_LEN)
|
|---|
| 480 | ;
|
|---|
| 481 | return(readdir_r(d, buf));
|
|---|
| 482 | }
|
|---|
| 483 | #endif
|
|---|
| 484 |
|
|---|
| 485 | char *
|
|---|
| 486 | ino2name(ino_t ino, char *dir)
|
|---|
| 487 | {
|
|---|
| 488 | DIR *dp;
|
|---|
| 489 | struct dirent *ep;
|
|---|
| 490 | char *name;
|
|---|
| 491 |
|
|---|
| 492 | dp = opendir("..");
|
|---|
| 493 | if (!dp)
|
|---|
| 494 | fail("cannot read parent directory");
|
|---|
| 495 | for (;;) {
|
|---|
| 496 | if (!(ep = readdir(dp)))
|
|---|
| 497 | fail("cannot find current directory");
|
|---|
| 498 | if (ep->d_ino == ino)
|
|---|
| 499 | break;
|
|---|
| 500 | }
|
|---|
| 501 | name = xstrdup(ep->d_name);
|
|---|
| 502 | closedir(dp);
|
|---|
| 503 | return name;
|
|---|
| 504 | }
|
|---|
| 505 |
|
|---|
| 506 | void *
|
|---|
| 507 | xmalloc(size_t size)
|
|---|
| 508 | {
|
|---|
| 509 | void *p = malloc(size);
|
|---|
| 510 | if (!p)
|
|---|
| 511 | fail("cannot allocate %u bytes", size);
|
|---|
| 512 | return p;
|
|---|
| 513 | }
|
|---|
| 514 |
|
|---|
| 515 | char *
|
|---|
| 516 | xstrdup(char *s)
|
|---|
| 517 | {
|
|---|
| 518 | return strcpy((char*)xmalloc(strlen(s) + 1), s);
|
|---|
| 519 | }
|
|---|
| 520 |
|
|---|
| 521 | char *
|
|---|
| 522 | xbasename(char *path)
|
|---|
| 523 | {
|
|---|
| 524 | char *cp;
|
|---|
| 525 |
|
|---|
| 526 | while ((cp = strrchr(path, '/')) && cp[1] == '\0')
|
|---|
| 527 | *cp = '\0';
|
|---|
| 528 | if (!cp) return path;
|
|---|
| 529 | return cp + 1;
|
|---|
| 530 | }
|
|---|
| 531 |
|
|---|
| 532 | void
|
|---|
| 533 | xchdir(char *dir)
|
|---|
| 534 | {
|
|---|
| 535 | if (chdir(dir) < 0)
|
|---|
| 536 | fail("cannot change directory to %s", dir);
|
|---|
| 537 | }
|
|---|
| 538 |
|
|---|
| 539 | int
|
|---|
| 540 | relatepaths(char *from, char *to, char *outpath)
|
|---|
| 541 | {
|
|---|
| 542 | char *cp, *cp2;
|
|---|
| 543 | int len;
|
|---|
| 544 | char buf[NAME_MAX];
|
|---|
| 545 |
|
|---|
| 546 | assert(*from == '/' && *to == '/');
|
|---|
| 547 | for (cp = to, cp2 = from; *cp == *cp2; cp++, cp2++)
|
|---|
| 548 | if (*cp == '\0')
|
|---|
| 549 | break;
|
|---|
| 550 | while (cp[-1] != '/')
|
|---|
| 551 | cp--, cp2--;
|
|---|
| 552 | if (cp - 1 == to) {
|
|---|
| 553 | /* closest common ancestor is /, so use full pathname */
|
|---|
| 554 | len = strlen(strcpy(outpath, to));
|
|---|
| 555 | if (outpath[len] != '/') {
|
|---|
| 556 | outpath[len++] = '/';
|
|---|
| 557 | outpath[len] = '\0';
|
|---|
| 558 | }
|
|---|
| 559 | } else {
|
|---|
| 560 | len = 0;
|
|---|
| 561 | while ((cp2 = getcomponent(cp2, buf)) != 0) {
|
|---|
| 562 | strcpy(outpath + len, "../");
|
|---|
| 563 | len += 3;
|
|---|
| 564 | }
|
|---|
| 565 | while ((cp = getcomponent(cp, buf)) != 0) {
|
|---|
| 566 | sprintf(outpath + len, "%s/", buf);
|
|---|
| 567 | len += strlen(outpath + len);
|
|---|
| 568 | }
|
|---|
| 569 | }
|
|---|
| 570 | return len;
|
|---|
| 571 | }
|
|---|
| 572 |
|
|---|
| 573 | void
|
|---|
| 574 | reversepath(char *inpath, char *name, int len, char *outpath)
|
|---|
| 575 | {
|
|---|
| 576 | char *cp, *cp2;
|
|---|
| 577 | char buf[NAME_MAX];
|
|---|
| 578 | struct stat sb;
|
|---|
| 579 |
|
|---|
| 580 | cp = strcpy(outpath + PATH_MAX - (len + 1), name);
|
|---|
| 581 | cp2 = inpath;
|
|---|
| 582 | while ((cp2 = getcomponent(cp2, buf)) != 0) {
|
|---|
| 583 | if (strcmp(buf, ".") == 0)
|
|---|
| 584 | continue;
|
|---|
| 585 | if (strcmp(buf, "..") == 0) {
|
|---|
| 586 | if (stat(".", &sb) < 0)
|
|---|
| 587 | fail("cannot stat current directory");
|
|---|
| 588 | name = ino2name(sb.st_ino, "..");
|
|---|
| 589 | len = strlen(name);
|
|---|
| 590 | cp -= len + 1;
|
|---|
| 591 | strcpy(cp, name);
|
|---|
| 592 | cp[len] = '/';
|
|---|
| 593 | free(name);
|
|---|
| 594 | xchdir("..");
|
|---|
| 595 | } else {
|
|---|
| 596 | cp -= 3;
|
|---|
| 597 | strncpy(cp, "../", 3);
|
|---|
| 598 | xchdir(buf);
|
|---|
| 599 | }
|
|---|
| 600 | }
|
|---|
| 601 | strcpy(outpath, cp);
|
|---|
| 602 | }
|
|---|
