diff options
| author | perry <perry@NetBSD.org> | 1998-02-02 23:20:35 +0000 |
|---|---|---|
| committer | perry <perry@NetBSD.org> | 1998-02-02 23:20:35 +0000 |
| commit | 764a8201df53decbaa178e7afff2650e0c4bcd2e (patch) | |
| tree | e1e9acfd643d894651c31df483bab9205b016576 /lib/libc/stdlib/realpath.c | |
| parent | f98d9155979ec08eb3e140322c6654be58ad8c81 (diff) | |
realpath is now part of getcwd.c in gen/; man page moved to gen, too.
Diffstat (limited to 'lib/libc/stdlib/realpath.c')
| -rw-r--r-- | lib/libc/stdlib/realpath.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/lib/libc/stdlib/realpath.c b/lib/libc/stdlib/realpath.c deleted file mode 100644 index 62d1db8f824..00000000000 --- a/lib/libc/stdlib/realpath.c +++ /dev/null @@ -1,170 +0,0 @@ -/* $NetBSD: realpath.c,v 1.5 1997/07/21 14:09:03 jtc Exp $ */ - -/* - * Copyright (c) 1994 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Jan-Simon Pendry. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -#if defined(LIBC_SCCS) && !defined(lint) -#if 0 -static char sccsid[] = "from: @(#)realpath.c 8.1 (Berkeley) 2/16/94"; -#else -__RCSID("$NetBSD: realpath.c,v 1.5 1997/07/21 14:09:03 jtc Exp $"); -#endif -#endif /* LIBC_SCCS and not lint */ - -#include "namespace.h" -#include <sys/param.h> -#include <sys/stat.h> - -#include <errno.h> -#include <fcntl.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#ifdef __weak_alias -__weak_alias(realpath,_realpath); -#endif - -/* - * char *realpath(const char *path, char resolved_path[MAXPATHLEN]); - * - * Find the real name of path, by removing all ".", ".." and symlink - * components. Returns (resolved) on success, or (NULL) on failure, - * in which case the path which caused trouble is left in (resolved). - */ -char * -realpath(path, resolved) - const char *path; - char *resolved; -{ - struct stat sb; - int fd, n, rootd, serrno; - char *p, *q, wbuf[MAXPATHLEN]; - - /* Save the starting point. */ - if ((fd = open(".", O_RDONLY)) < 0) { - (void)strncpy(resolved, ".", MAXPATHLEN - 1); - return (NULL); - } - - /* - * Find the dirname and basename from the path to be resolved. - * Change directory to the dirname component. - * lstat the basename part. - * if it is a symlink, read in the value and loop. - * if it is a directory, then change to that directory. - * get the current directory name and append the basename. - */ - (void)strncpy(resolved, path, MAXPATHLEN - 1); - resolved[MAXPATHLEN - 1] = '\0'; -loop: - q = strrchr(resolved, '/'); - if (q != NULL) { - p = q + 1; - if (q == resolved) - q = "/"; - else { - do { - --q; - } while (q > resolved && *q == '/'); - q[1] = '\0'; - q = resolved; - } - if (chdir(q) < 0) - goto err1; - } else - p = resolved; - - /* Deal with the last component. */ - if (lstat(p, &sb) == 0) { - if (S_ISLNK(sb.st_mode)) { - n = readlink(p, resolved, MAXPATHLEN); - if (n < 0) - goto err1; - resolved[n] = '\0'; - goto loop; - } - if (S_ISDIR(sb.st_mode)) { - if (chdir(p) < 0) - goto err1; - p = ""; - } - } - - /* - * Save the last component name and get the full pathname of - * the current directory. - */ - (void)strncpy(wbuf, p, sizeof wbuf - 1); - if (getcwd(resolved, MAXPATHLEN) == 0) - goto err1; - - /* - * Join the two strings together, ensuring that the right thing - * happens if the last component is empty, or the dirname is root. - */ - if (resolved[0] == '/' && resolved[1] == '\0') - rootd = 1; - else - rootd = 0; - - if (*wbuf) { - if (strlen(resolved) + strlen(wbuf) + rootd + 1 > MAXPATHLEN) { - errno = ENAMETOOLONG; - goto err1; - } - if (rootd == 0) - (void)strcat(resolved, "/"); /* XXX: strcat is safe */ - (void)strcat(resolved, wbuf); /* XXX: strcat is safe */ - } - - /* Go back to where we came from. */ - if (fchdir(fd) < 0) { - serrno = errno; - goto err2; - } - - /* It's okay if the close fails, what's an fd more or less? */ - (void)close(fd); - return (resolved); - -err1: serrno = errno; - (void)fchdir(fd); -err2: (void)close(fd); - errno = serrno; - return (NULL); -} |
