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161 lines
4.7 KiB
C
161 lines
4.7 KiB
C
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/*
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* $Id$
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* From: $NetBSD: ls.c,v 1.3 1997/06/13 13:48:47 drochner Exp $
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*/
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/*
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1996
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* Matthias Drochner. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ufs/dir.h>
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#include <stand.h>
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#include "bootstrap.h"
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static char typestr[] = "?fc?d?b? ?l?s?w";
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COMMAND_SET(ls, "ls", "list files", command_ls);
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static int
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command_ls(int argc, char *argv[])
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{
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int fd;
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struct stat sb;
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size_t size;
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char dirbuf[DIRBLKSIZ];
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char pathbuf[128]; /* XXX path length constant? */
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char buf[128]; /* must be long enough for dir entry! */
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char *path;
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int result, ch;
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#ifdef VERBOSE_LS
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int verbose;
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verbose = 0;
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optind = 1;
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while ((ch = getopt(argc, argv, "l")) != -1) {
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switch(ch) {
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case 'l':
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verbose = 1;
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break;
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case '?':
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default:
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/* getopt has already reported an error */
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return(CMD_OK);
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}
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}
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argv += (optind - 1);
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argc -= (optind - 1);
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#endif
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if (argc < 2) {
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path = "/";
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} else {
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path = argv[1];
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}
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pager_open();
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pager_output(path);
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pager_output("\n");
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fd = open(path, O_RDONLY);
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if (fd < 0) {
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sprintf(command_errbuf, "open '%s' failed: %s", path, strerror(errno));
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return(CMD_ERROR);
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}
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result = CMD_OK;
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if (fstat(fd, &sb) < 0) {
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sprintf(command_errbuf, "stat failed: %s", strerror(errno));
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result = CMD_ERROR;
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goto out;
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}
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if (!S_ISDIR(sb.st_mode)) {
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sprintf(command_errbuf, "%s: %s", path, strerror(ENOTDIR));
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result = CMD_ERROR;
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goto out;
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}
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while ((size = read(fd, dirbuf, DIRBLKSIZ)) == DIRBLKSIZ) {
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struct direct *dp, *edp;
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dp = (struct direct *) dirbuf;
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edp = (struct direct *) (dirbuf + size);
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while (dp < edp) {
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if (dp->d_ino != (ino_t) 0) {
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if ((dp->d_namlen > MAXNAMLEN + 1) || (dp->d_type > sizeof(typestr))) {
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/*
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* This does not handle "old"
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* filesystems properly. On little
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* endian machines, we get a bogus
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* type name if the namlen matches a
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* valid type identifier. We could
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* check if we read namlen "0" and
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* handle this case specially, if
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* there were a pressing need...
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*/
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command_errmsg = "bad dir entry";
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result = CMD_ERROR;
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goto out;
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}
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if (strcmp(dp->d_name, ".") && strcmp(dp->d_name, "..")) {
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#ifdef VERBOSE_LS /* too much UFS activity blows the heap out */
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if (verbose) {
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/* stat the file, if possible */
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sb.st_size = 0;
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sprintf(buf, "%s/%s", pathbuf, dp->d_name);
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/* ignore return */
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if (stat(buf, &sb))
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sb.st_size = -1;
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sprintf(buf, " %c %8d %s\n", typestr[dp->d_type], (int)sb.st_size, dp->d_name);
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#endif
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} else
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sprintf(buf, " %c %s\n", typestr[dp->d_type], dp->d_name);
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if (pager_output(buf))
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goto out;
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}
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}
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dp = (struct direct *) ((char *) dp + dp->d_reclen);
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}
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}
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out:
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pager_close();
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close(fd);
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return(result);
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}
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