/* vi: set sw=4 ts=4: */ /* * Mini df implementation for busybox * * Copyright (C) 1999,2000 by Lineo, inc. * Written by Erik Andersen , * based on original code by (I think) Bruce Perens . * * 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 "busybox.h" #include #include #include extern const char mtab_file[]; /* Defined in utility.c */ #ifdef BB_FEATURE_HUMAN_READABLE unsigned long disp_hr = KILOBYTE; #endif static int df(char *device, const char *mountPoint) { struct statfs s; long blocks_used; long blocks_percent_used; if (statfs(mountPoint, &s) != 0) { perror_msg("%s", mountPoint); return FALSE; } if (s.f_blocks > 0) { blocks_used = s.f_blocks - s.f_bfree; if(0 == blocks_used) 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 */ find_real_root_device_name( device); } #ifdef BB_FEATURE_HUMAN_READABLE printf("%-20s %9s", device, format((s.f_blocks * s.f_bsize), disp_hr)); printf(" %9s", format((s.f_blocks - s.f_bfree) * s.f_bsize, disp_hr)); printf(" %9s %3ld%% %s\n", format(s.f_bavail * s.f_bsize, disp_hr), blocks_percent_used, mountPoint); #else printf("%-20s %9ld %9ld %9ld %3ld%% %s\n", device, (long) (s.f_blocks * (s.f_bsize / 1024.0)), (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / 1024.0)), (long) (s.f_bavail * (s.f_bsize / 1024.0)), blocks_percent_used, mountPoint); #endif } return TRUE; } extern int df_main(int argc, char **argv) { int status = EXIT_SUCCESS; int opt = 0; int i = 0; while ((opt = getopt(argc, argv, "?" #ifdef BB_FEATURE_HUMAN_READABLE "hm" #endif "k" )) > 0) { switch (opt) { #ifdef BB_FEATURE_HUMAN_READABLE case 'h': disp_hr = 0; break; case 'm': disp_hr = MEGABYTE; break; case 'k': disp_hr = KILOBYTE; break; #else case 'k': break; #endif case '?': goto print_df_usage; break; } } printf("%-20s %-14s %s %s %s %s\n", "Filesystem", #ifdef BB_FEATURE_HUMAN_READABLE (KILOBYTE == disp_hr) ? "1k-blocks" : " Size", #else "1k-blocks", #endif "Used", "Available", "Use%", "Mounted on"); if(optind < argc) { struct mntent *mountEntry; for(i = optind; i < argc; i++) { if ((mountEntry = find_mount_point(argv[i], mtab_file)) == 0) { error_msg("%s: can't find mount point.\n", argv[i]); status = EXIT_FAILURE; } else if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir)) status = EXIT_FAILURE; } } else { FILE *mountTable; struct mntent *mountEntry; mountTable = setmntent(mtab_file, "r"); if (mountTable == 0) { perror_msg("%s", mtab_file); return EXIT_FAILURE; } while ((mountEntry = getmntent(mountTable))) { if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir)) status = EXIT_FAILURE; } endmntent(mountTable); } return status; print_df_usage: usage(df_usage); return(FALSE); } /* Local Variables: c-file-style: "linux" c-basic-offset: 4 tab-width: 4 End: */