433bd38e3a
Sponsored by: Netflix
213 lines
5.5 KiB
C
213 lines
5.5 KiB
C
/*
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* $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/cdefs.h>
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__FBSDID("$FreeBSD$");
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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 <string.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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static int ls_getdir(char **pathp);
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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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struct dirent *d;
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char *buf, *path;
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char lbuf[128]; /* one line */
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int result, ch;
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int verbose;
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result = CMD_OK;
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fd = -1;
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verbose = 0;
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optind = 1;
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optreset = 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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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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if (stat(path, &sb) == 0 && !S_ISDIR(sb.st_mode)) {
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if (verbose) {
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printf(" %c %8d %s\n",
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typestr[sb.st_mode >> 12],
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(int)sb.st_size, path);
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} else {
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printf(" %c %s\n",
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typestr[sb.st_mode >> 12], path);
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}
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return (CMD_OK);
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}
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fd = ls_getdir(&path);
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if (fd == -1) {
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result = CMD_ERROR;
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goto out;
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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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while ((d = readdirfd(fd)) != NULL) {
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if (strcmp(d->d_name, ".") && strcmp(d->d_name, "..")) {
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if (d->d_type == 0 || verbose) {
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/* stat the file, if possible */
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sb.st_size = 0;
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sb.st_mode = 0;
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buf = malloc(strlen(path) + strlen(d->d_name) + 2);
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if (buf != NULL) {
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sprintf(buf, "%s/%s", path, d->d_name);
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/* ignore return, could be symlink, etc. */
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if (stat(buf, &sb)) {
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sb.st_size = 0;
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sb.st_mode = 0;
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}
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free(buf);
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}
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}
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if (verbose) {
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snprintf(lbuf, sizeof(lbuf), " %c %8d %s\n",
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typestr[d->d_type? d->d_type:sb.st_mode >> 12],
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(int)sb.st_size, d->d_name);
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} else {
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snprintf(lbuf, sizeof(lbuf), " %c %s\n",
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typestr[d->d_type? d->d_type:sb.st_mode >> 12], d->d_name);
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}
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if (pager_output(lbuf))
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goto out;
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}
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}
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out:
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pager_close();
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if (fd != -1)
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close(fd);
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free(path); /* ls_getdir() did allocate path */
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return (result);
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}
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/*
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* Given (path) containing a vaguely reasonable path specification, return an fd
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* on the directory, and an allocated copy of the path to the directory.
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*/
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static int
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ls_getdir(char **pathp)
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{
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struct stat sb;
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int fd;
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const char *cp;
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char *path;
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fd = -1;
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/* one extra byte for a possible trailing slash required */
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path = malloc(strlen(*pathp) + 2);
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if (path == NULL) {
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snprintf(command_errbuf, sizeof (command_errbuf),
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"out of memory");
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goto out;
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}
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strcpy(path, *pathp);
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/* Make sure the path is respectable to begin with */
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if (archsw.arch_getdev(NULL, path, &cp)) {
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snprintf(command_errbuf, sizeof(command_errbuf),
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"bad path '%s'", path);
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goto out;
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}
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/* If there's no path on the device, assume '/' */
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if (*cp == 0)
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strcat(path, "/");
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fd = open(path, O_RDONLY);
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if (fd < 0) {
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snprintf(command_errbuf, sizeof(command_errbuf),
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"open '%s' failed: %s", path, strerror(errno));
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goto out;
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}
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if (fstat(fd, &sb) < 0) {
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snprintf(command_errbuf, sizeof(command_errbuf),
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"stat failed: %s", strerror(errno));
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goto out;
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}
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if (!S_ISDIR(sb.st_mode)) {
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snprintf(command_errbuf, sizeof(command_errbuf),
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"%s: %s", path, strerror(ENOTDIR));
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goto out;
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}
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*pathp = path;
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return (fd);
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out:
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free(path);
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*pathp = NULL;
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if (fd != -1)
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close(fd);
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return (-1);
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}
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