169 lines
4.3 KiB
C
169 lines
4.3 KiB
C
/* $NetBSD: h_cwd.c,v 1.3 2012/04/17 09:23:21 jruoho Exp $ */
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/*-
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* Copyright (c) 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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static const char *prefix;
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static size_t prefixlen;
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static char buf[1024];
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static char pwd[1024];
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static const char *
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makepath(const char *tail)
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{
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strcpy(buf, prefix);
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if (prefix[prefixlen-1] != '/')
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strcat(buf, "/");
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strcat(buf, tail);
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return buf;
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}
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static void
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dochdir(const char *path, const char *errmsg)
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{
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if (chdir(path) == -1)
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err(EXIT_FAILURE, "%s", errmsg);
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}
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static void
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dofchdir(const char *path, const char *errmsg)
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{
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int fd;
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fd = open(path, O_RDONLY);
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if (fd == -1)
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err(EXIT_FAILURE, "open %s", errmsg);
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if (fchdir(fd) == -1)
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err(EXIT_FAILURE, "fchdir %s", errmsg);
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close(fd);
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}
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static void (*thechdir)(const char *, const char *);
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static void
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simple(void)
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{
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thechdir(prefix, "chdir1");
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if (getcwd(pwd, sizeof(pwd)) == NULL)
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err(EXIT_FAILURE, "getcwd1");
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if (strcmp(pwd, prefix) != 0)
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errx(EXIT_FAILURE, "strcmp1");
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if (mkdir("dir", 0777) == -1)
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err(EXIT_FAILURE, "mkdir2");
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thechdir("dir", "chdir2");
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if (getcwd(pwd, sizeof(pwd)) == NULL)
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err(EXIT_FAILURE, "getcwd2");
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if (strcmp(pwd, makepath("dir")) != 0)
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errx(EXIT_FAILURE, "strcmp2");
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if (mkdir("dir", 0777) == -1)
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err(EXIT_FAILURE, "mkdir3");
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thechdir("dir", "chdir3");
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if (getcwd(pwd, sizeof(pwd)) == NULL)
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err(EXIT_FAILURE, "getcwd3");
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if (strcmp(pwd, makepath("dir/dir")) != 0)
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errx(EXIT_FAILURE, "strcmp3");
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thechdir("..", "chdir4");
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if (getcwd(pwd, sizeof(pwd)) == NULL)
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err(EXIT_FAILURE, "getcwd4");
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if (strcmp(pwd, makepath("dir")) != 0)
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errx(EXIT_FAILURE, "strcmp4");
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thechdir("../../../../../../..", "chdir5");
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if (getcwd(pwd, sizeof(pwd)) == NULL)
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err(EXIT_FAILURE, "getcwd5");
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if (strcmp(pwd, prefix) != 0)
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errx(EXIT_FAILURE, "strcmp5");
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thechdir("/", "chdir6");
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if (getcwd(pwd, sizeof(pwd)) == NULL)
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err(EXIT_FAILURE, "getcwd6");
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if (strcmp(pwd, "/") != 0)
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errx(EXIT_FAILURE, "strcmp6");
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}
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static void
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symlinktest(void)
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{
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thechdir(prefix, "chdir1");
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if (mkdir("adir", 0777) == -1)
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err(EXIT_FAILURE, "mkdir1");
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if (mkdir("anotherdir", 0777) == -1)
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err(EXIT_FAILURE, "mkdir2");
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if (symlink("/adir", "anotherdir/lincthesink") == -1)
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err(EXIT_FAILURE, "symlink");
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thechdir("anotherdir/lincthesink", "chdir2");
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if (getcwd(pwd, sizeof(pwd)) == NULL)
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err(EXIT_FAILURE, "getcwd");
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if (strcmp(pwd, makepath("adir")) != 0)
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errx(EXIT_FAILURE, "strcmp");
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}
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int
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main(int argc, char *argv[])
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{
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if (argc != 4)
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errx(1, "usage");
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prefix = argv[1];
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prefixlen = strlen(argv[1]);
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if (strcmp(argv[3], "chdir") == 0)
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thechdir = dochdir;
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else if (strcmp(argv[3], "fchdir") == 0)
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thechdir = dofchdir;
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else
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errx(EXIT_FAILURE, "invalid chdir type");
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if (strcmp(argv[2], "simple") == 0)
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simple();
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if (strcmp(argv[2], "symlink") == 0)
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symlinktest();
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return EXIT_SUCCESS;
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}
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