140 lines
3.3 KiB
C
140 lines
3.3 KiB
C
/*
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* realpath -- canonicalize pathnames, resolving symlinks
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*
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* usage: realpath [-csv] pathname [pathname...]
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*
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* options: -c check whether or not each resolved path exists
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* -s no output, exit status determines whether path is valid
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* -v produce verbose output
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*
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*
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* exit status: 0 if all pathnames resolved
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* 1 if any of the pathname arguments could not be resolved
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*
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*
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* Bash loadable builtin version
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*
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* Chet Ramey
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* chet@po.cwru.edu
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*/
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/*
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Copyright (C) 1999-2009 Free Software Foundation, Inc.
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This file is part of GNU Bash.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include "bashansi.h"
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#include <maxpath.h>
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#include <errno.h>
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#include "builtins.h"
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#include "shell.h"
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#include "bashgetopt.h"
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#include "common.h"
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#ifndef errno
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extern int errno;
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#endif
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extern char *sh_realpath();
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realpath_builtin(list)
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WORD_LIST *list;
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{
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int opt, cflag, vflag, sflag, es;
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char *r, realbuf[PATH_MAX], *p;
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struct stat sb;
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if (list == 0) {
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builtin_usage();
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return (EX_USAGE);
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}
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vflag = cflag = sflag = 0;
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reset_internal_getopt();
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while ((opt = internal_getopt (list, "csv")) != -1) {
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switch (opt) {
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case 'c':
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cflag = 1;
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break;
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case 's':
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sflag = 1;
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break;
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case 'v':
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vflag = 1;
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break;
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default:
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builtin_usage();
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}
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}
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list = loptend;
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if (list == 0)
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builtin_usage();
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for (es = EXECUTION_SUCCESS; list; list = list->next) {
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p = list->word->word;
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r = sh_realpath(p, realbuf);
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if (r == 0) {
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es = EXECUTION_FAILURE;
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if (sflag == 0)
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builtin_error("%s: cannot resolve: %s", p, strerror(errno));
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continue;
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}
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if (cflag && (stat(realbuf, &sb) < 0)) {
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es = EXECUTION_FAILURE;
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if (sflag == 0)
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builtin_error("%s: %s", p, strerror(errno));
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continue;
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}
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if (sflag == 0) {
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if (vflag)
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printf ("%s -> ", p);
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printf("%s\n", realbuf);
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}
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}
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return es;
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}
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char *realpath_doc[] = {
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"Display pathname in canonical form.",
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"",
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"Display the canonicalized version of each PATHNAME argument, resolving",
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"symbolic links. The -c option checks whether or not each resolved name",
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"exists. The -s option produces no output; the exit status determines the",
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"valididty of each PATHNAME. The -v option produces verbose output. The",
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"exit status is 0 if each PATHNAME was resolved; non-zero otherwise.",
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(char *)NULL
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};
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struct builtin realpath_struct = {
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"realpath", /* builtin name */
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realpath_builtin, /* function implementing the builtin */
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BUILTIN_ENABLED, /* initial flags for builtin */
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realpath_doc, /* array of long documentation strings */
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"realpath [-csv] pathname [pathname...]", /* usage synopsis */
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0 /* reserved for internal use */
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};
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