freebsd-dev/sys/boot/common/ls.c
Mike Smith 95d50652d0 No builtin command resets getopt before using it, causing
problems in case a wrong option was given previously, and no option
is given to the next command.

PR:		kern/9371
Submitted by:	"Daniel C. Sobral" <dcs@newsguy.com>
1999-01-11 06:41:32 +00:00

211 lines
5.6 KiB
C

/*
* $Id: ls.c,v 1.6 1998/10/11 10:28:51 peter Exp $
* From: $NetBSD: ls.c,v 1.3 1997/06/13 13:48:47 drochner Exp $
*/
/*
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1996
* Matthias Drochner. All rights reserved.
*
* 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/param.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ufs/dir.h>
#include <stand.h>
#include <string.h>
#include "bootstrap.h"
static char typestr[] = "?fc?d?b? ?l?s?w";
static int ls_getdir(char **pathp);
COMMAND_SET(ls, "ls", "list files", command_ls);
static int
command_ls(int argc, char *argv[])
{
int fd;
size_t size;
struct stat sb;
static char dirbuf[DIRBLKSIZ];
char *buf, *path;
char lbuf[128]; /* one line */
int result, ch;
int verbose;
result = CMD_OK;
fd = -1;
verbose = 0;
optind = 1;
optreset = 1;
while ((ch = getopt(argc, argv, "l")) != -1) {
switch(ch) {
case 'l':
verbose = 1;
break;
case '?':
default:
/* getopt has already reported an error */
return(CMD_OK);
}
}
argv += (optind - 1);
argc -= (optind - 1);
if (argc < 2) {
path = "";
} else {
path = argv[1];
}
fd = ls_getdir(&path);
if (fd == -1) {
result = CMD_ERROR;
goto out;
}
pager_open();
pager_output(path);
pager_output("\n");
while ((size = read(fd, dirbuf, DIRBLKSIZ)) == DIRBLKSIZ) {
struct direct *dp, *edp;
dp = (struct direct *) dirbuf;
edp = (struct direct *) (dirbuf + size);
while (dp < edp) {
if (dp->d_ino != (ino_t) 0) {
if ((dp->d_namlen > MAXNAMLEN + 1) || (dp->d_type > sizeof(typestr))) {
/*
* This does not handle "old"
* filesystems properly. On little
* endian machines, we get a bogus
* type name if the namlen matches a
* valid type identifier. We could
* check if we read namlen "0" and
* handle this case specially, if
* there were a pressing need...
*/
command_errmsg = "bad dir entry";
result = CMD_ERROR;
goto out;
}
if (strcmp(dp->d_name, ".") && strcmp(dp->d_name, "..")) {
if (verbose) {
/* stat the file, if possible */
sb.st_size = 0;
buf = malloc(strlen(path) + strlen(dp->d_name) + 2);
sprintf(buf, "%s/%s", path, dp->d_name);
/* ignore return, could be symlink, etc. */
if (stat(buf, &sb))
sb.st_size = 0;
free(buf);
sprintf(lbuf, " %c %8d %s\n", typestr[dp->d_type], (int)sb.st_size, dp->d_name);
} else
sprintf(lbuf, " %c %s\n", typestr[dp->d_type], dp->d_name);
if (pager_output(lbuf))
goto out;
}
}
dp = (struct direct *) ((char *) dp + dp->d_reclen);
}
}
out:
pager_close();
if (fd != -1)
close(fd);
if (path != NULL)
free(path);
return(result);
}
/*
* Given (path) containing a vaguely reasonable path specification, return an fd
* on the directory, and an allocated copy of the path to the directory.
*/
static int
ls_getdir(char **pathp)
{
struct stat sb;
int fd;
const char *cp;
char *path, *tail;
tail = NULL;
fd = -1;
/* one extra byte for a possible trailing slash required */
path = malloc(strlen(*pathp) + 2);
strcpy(path, *pathp);
/* Make sure the path is respectable to begin with */
if (archsw.arch_getdev(NULL, path, &cp)) {
sprintf(command_errbuf, "bad path '%s'", path);
goto out;
}
/* If there's no path on the device, assume '/' */
if (*cp == 0)
strcat(path, "/");
fd = open(path, O_RDONLY);
if (fd < 0) {
sprintf(command_errbuf, "open '%s' failed: %s", path, strerror(errno));
goto out;
}
if (fstat(fd, &sb) < 0) {
sprintf(command_errbuf, "stat failed: %s", strerror(errno));
goto out;
}
if (!S_ISDIR(sb.st_mode)) {
sprintf(command_errbuf, "%s: %s", path, strerror(ENOTDIR));
goto out;
}
*pathp = path;
return(fd);
out:
free(path);
*pathp = NULL;
if (fd != -1)
close(fd);
return(-1);
}