mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-11-28 06:00:36 +00:00
4d1d0113fd
and linux kernel 2.0.36 (though the dubious reasons why someone would want to do that defy imagination ;) -Erik
144 lines
2.9 KiB
C
144 lines
2.9 KiB
C
/*
|
|
* Mini du implementation for busybox
|
|
*
|
|
*
|
|
* Copyright (C) 1999 by Lineo, inc.
|
|
* Written by John Beppu <beppu@lineo.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include "internal.h"
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#include <dirent.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#if 0
|
|
#include <unistd.h>
|
|
#include <sys/stat.h>
|
|
#endif
|
|
|
|
typedef void (Display)(size_t, char *);
|
|
|
|
static const char du_usage[] =
|
|
"Usage: du [OPTION]... [FILE]...\n\n"
|
|
"\t-s\tdisplay only a total for each argument\n"
|
|
;
|
|
|
|
static int du_depth = 0;
|
|
|
|
static Display *print;
|
|
|
|
static void
|
|
print_normal(size_t size, char *filename)
|
|
{
|
|
fprintf(stdout, "%-7d %s\n", (size >> 1), filename);
|
|
}
|
|
|
|
static void
|
|
print_summary(size_t size, char *filename)
|
|
{
|
|
if (du_depth == 1) {
|
|
print_normal(size, filename);
|
|
}
|
|
}
|
|
|
|
|
|
/* tiny recursive du */
|
|
static size_t
|
|
du(char *filename)
|
|
{
|
|
struct stat statbuf;
|
|
size_t sum;
|
|
|
|
if ((lstat(filename, &statbuf)) != 0) {
|
|
fprintf(stdout, "du: %s: %s\n", filename, strerror(errno));
|
|
return 0;
|
|
}
|
|
|
|
du_depth++;
|
|
sum = statbuf.st_blocks;
|
|
|
|
if (S_ISDIR(statbuf.st_mode)) {
|
|
DIR *dir;
|
|
struct dirent *entry;
|
|
|
|
dir = opendir(filename);
|
|
if (!dir) { return 0; }
|
|
while ((entry = readdir(dir))) {
|
|
char newfile[512];
|
|
char *name = entry->d_name;
|
|
|
|
if ( (strcmp(name, "..") == 0)
|
|
|| (strcmp(name, ".") == 0))
|
|
{ continue; }
|
|
|
|
sprintf(newfile, "%s/%s", filename, name);
|
|
sum += du(newfile);
|
|
}
|
|
closedir(dir);
|
|
print(sum, filename);
|
|
}
|
|
du_depth--;
|
|
return sum;
|
|
}
|
|
|
|
int
|
|
du_main(int argc, char **argv)
|
|
{
|
|
int i;
|
|
char opt;
|
|
|
|
/* default behaviour */
|
|
print = print_normal;
|
|
|
|
/* parse argv[] */
|
|
for (i = 1; i < argc; i++) {
|
|
if (argv[i][0] == '-') {
|
|
opt = argv[i][1];
|
|
switch (opt) {
|
|
case 's':
|
|
print = print_summary;
|
|
break;
|
|
case 'h':
|
|
usage(du_usage);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "du: invalid option -- %c\n", opt);
|
|
usage(du_usage);
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* go through remaining args (if any) */
|
|
if (i >= argc) {
|
|
du(".");
|
|
} else {
|
|
int sum;
|
|
for ( ; i < argc; i++) {
|
|
sum = du(argv[i]);
|
|
if ((sum) && (isDirectory(argv[i]))) { print_normal(sum, argv[i]); }
|
|
}
|
|
}
|
|
|
|
exit(0);
|
|
}
|
|
|
|
/* $Id: du.c,v 1.8 1999/12/17 18:44:15 erik Exp $ */
|