/* vi: set sw=4 ts=4: *//* * Mini df implementation for busybox * * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org> * based on original code by (I think) Bruce Perens <bruce@pixar.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 <stdio.h>#include <stdlib.h>#include <string.h>#include <mntent.h>#include <sys/vfs.h>#include <getopt.h>#include "busybox.h"extern const char mtab_file[];	/* Defined in utility.c */#ifdef BB_FEATURE_HUMAN_READABLEstatic unsigned long df_disp_hr = KILOBYTE; #endifstatic int do_df(char *device, const char *mount_point){	struct statfs s;	long blocks_used;	long blocks_percent_used;	if (statfs(mount_point, &s) != 0) {		perror_msg("%s", mount_point);		return FALSE;	}	if (s.f_blocks > 0) {		blocks_used = s.f_blocks - s.f_bfree;		if(blocks_used == 0)			blocks_percent_used = 0;		else {			blocks_percent_used = (long)			  (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);		}		if (strcmp(device, "/dev/root") == 0) {			/* Adjusts device to be the real root device,			 * or leaves device alone if it can't find it */			device = find_real_root_device_name(device);			if(device==NULL)				return FALSE;		}#ifdef BB_FEATURE_HUMAN_READABLE		printf("%-20s %9s ", device,				make_human_readable_str(s.f_blocks, s.f_bsize, df_disp_hr));		printf("%9s ",				make_human_readable_str( (s.f_blocks - s.f_bfree), s.f_bsize, df_disp_hr));		printf("%9s %3ld%% %s\n",				make_human_readable_str(s.f_bavail, s.f_bsize, df_disp_hr),				blocks_percent_used, mount_point);#else		printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",				device,				(long) (s.f_blocks * (s.f_bsize / (double)KILOBYTE)),				(long) ((s.f_blocks - s.f_bfree)*(s.f_bsize/(double)KILOBYTE)),				(long) (s.f_bavail * (s.f_bsize / (double)KILOBYTE)),				blocks_percent_used, mount_point);#endif	}	return TRUE;}extern int df_main(int argc, char **argv){	int status = EXIT_SUCCESS;	int opt = 0;	int i = 0;	char disp_units_hdr[80] = "1k-blocks"; /* default display is kilobytes */	while ((opt = getopt(argc, argv, "k"#ifdef BB_FEATURE_HUMAN_READABLE	"hm"#endif)) > 0)	{		switch (opt) {#ifdef BB_FEATURE_HUMAN_READABLE			case 'h':				df_disp_hr = 0;				strcpy(disp_units_hdr, "     Size");				break;			case 'm':				df_disp_hr = MEGABYTE;				strcpy(disp_units_hdr, "1M-blocks");				break;#endif			case 'k':				/* default display is kilobytes */				break;			default:					  show_usage();		}	}	printf("%-20s %-14s %s %s %s %s\n", "Filesystem", disp_units_hdr,	       "Used", "Available", "Use%", "Mounted on");	if(optind < argc) {		struct mntent *mount_entry;		for(i = optind; i < argc; i++)		{			if ((mount_entry = find_mount_point(argv[i], mtab_file)) == 0) {				error_msg("%s: can't find mount point.", argv[i]);				status = EXIT_FAILURE;			} else if (!do_df(mount_entry->mnt_fsname, mount_entry->mnt_dir))				status = EXIT_FAILURE;		}	} else {		FILE *mount_table;		struct mntent *mount_entry;		mount_table = setmntent(mtab_file, "r");		if (mount_table == 0) {			perror_msg("%s", mtab_file);			return EXIT_FAILURE;		}		while ((mount_entry = getmntent(mount_table))) {			if (!do_df(mount_entry->mnt_fsname, mount_entry->mnt_dir))				status = EXIT_FAILURE;		}		endmntent(mount_table);	}	return status;}/*Local Variables:c-file-style: "linux"c-basic-offset: 4tab-width: 4End:*/