X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=coreutils%2Fdf.c;h=9c0d13f62b46cd64bb3a9fe9dce4c3e58a0e89d0;hb=96379b0d7da8800d248d58641923870781f1a6f9;hp=1404e96216303ebc555d8df9cdee8d663b1bfd3c;hpb=c054b21f7d0420b1f8f8100a17fb14de9c947ef2;p=oweals%2Fbusybox.git diff --git a/coreutils/df.c b/coreutils/df.c index 1404e9621..9c0d13f62 100644 --- a/coreutils/df.c +++ b/coreutils/df.c @@ -1,8 +1,8 @@ +/* vi: set sw=4 ts=4: */ /* * Mini df implementation for busybox * - * Copyright (C) 1999 by Lineo, inc. - * Written by Erik Andersen , + * Copyright (C) 1999-2003 by Erik Andersen * based on original code by (I think) Bruce Perens . * * This program is free software; you can redistribute it and/or modify @@ -21,92 +21,150 @@ * */ -#include "internal.h" +/* BB_AUDIT SUSv3 _NOT_ compliant -- options -P and -t missing. Also blocksize. */ +/* http://www.opengroup.org/onlinepubs/007904975/utilities/df.html */ + +/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) + * + * Size reduction. Removed floating point dependency. Added error checking + * on output. Output stats on 0-sized filesystems if specificly listed on + * the command line. Properly round *-blocks, Used, and Available quantities. + */ + #include +#include +#include +#include #include -#include #include -#include - -static const char df_usage[] = "df [filesystem ...]\n" - "\n" "\tPrint the filesystem space used and space available.\n"; +#include "busybox.h" -extern const char mtab_file[]; /* Defined in utility.c */ - -static int df(char *device, const char *mountPoint) +#ifndef CONFIG_FEATURE_HUMAN_READABLE +static long kscale(long b, long bs) { - struct statfs s; - long blocks_used; - long blocks_percent_used; - struct fstab* fstabItem; - - if (statfs(mountPoint, &s) != 0) { - perror(mountPoint); - return FALSE; - } - - if (s.f_blocks > 0) { - blocks_used = s.f_blocks - s.f_bfree; - blocks_percent_used = (long) - (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5); - /* Note that if /etc/fstab is missing, libc can't fix up /dev/root for us */ - if (strcmp (device, "/dev/root") == 0) { - fstabItem = getfsfile ("/"); - if (fstabItem != NULL) - device = fstabItem->fs_spec; - } - 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); - - } - - return TRUE; + return ( b * (long long) bs + KILOBYTE/2 ) / KILOBYTE; } +#endif extern int df_main(int argc, char **argv) { - printf("%-20s %-14s %s %s %s %s\n", "Filesystem", - "1k-blocks", "Used", "Available", "Use%", "Mounted on"); + long blocks_used; + long blocks_percent_used; +#ifdef CONFIG_FEATURE_HUMAN_READABLE + unsigned long df_disp_hr = KILOBYTE; +#endif + int status = EXIT_SUCCESS; + unsigned long opt; + FILE *mount_table; + struct mntent *mount_entry; + struct statfs s; + static const char hdr_1k[] = "1k-blocks"; /* default display is kilobytes */ + const char *disp_units_hdr = hdr_1k; - /* Only compiled in if BB_MTAB is not defined */ - whine_if_fstab_is_missing(); +#ifdef CONFIG_FEATURE_HUMAN_READABLE + bb_opt_complementaly = "h-km:k-hm:m-hk"; + opt = bb_getopt_ulflags(argc, argv, "hmk"); + if(opt & 1) { + df_disp_hr = 0; + disp_units_hdr = " Size"; + } + if(opt & 2) { + df_disp_hr = MEGABYTE; + disp_units_hdr = "1M-blocks"; + } +#else + opt = bb_getopt_ulflags(argc, argv, "k"); +#endif - if (argc > 1) { - struct mntent *mountEntry; - int status; + bb_printf("Filesystem%11s%-15sUsed Available Use%% Mounted on\n", + "", disp_units_hdr); - while (argc > 1) { - if ((mountEntry = findMountPoint(argv[1], mtab_file)) == - 0) { - fprintf(stderr, "%s: can't find mount point.\n", argv[1]); - exit( FALSE); - } - status = df(mountEntry->mnt_fsname, mountEntry->mnt_dir); - if (status != 0) - exit( status); - argc--; - argv++; + mount_table = NULL; + argv += optind; + if (optind >= argc) { + if (!(mount_table = setmntent(bb_path_mtab_file, "r"))) { + bb_perror_msg_and_die(bb_path_mtab_file); + } } - exit( TRUE); - } else { - FILE *mountTable; - struct mntent *mountEntry; - mountTable = setmntent(mtab_file, "r"); - if (mountTable == 0) { - perror(mtab_file); - exit(FALSE); - } + do { + const char *device; + const char *mount_point; - while ((mountEntry = getmntent(mountTable))) { - df(mountEntry->mnt_fsname, mountEntry->mnt_dir); - } - endmntent(mountTable); - } + if (mount_table) { + if (!(mount_entry = getmntent(mount_table))) { + endmntent(mount_table); + break; + } + } else { + if (!(mount_point = *argv++)) { + break; + } + if (!(mount_entry = find_mount_point(mount_point, bb_path_mtab_file))) { + bb_error_msg("%s: can't find mount point.", mount_point); + SET_ERROR: + status = EXIT_FAILURE; + continue; + } + } - exit( TRUE); + device = mount_entry->mnt_fsname; + mount_point = mount_entry->mnt_dir; + + if (statfs(mount_point, &s) != 0) { + bb_perror_msg("%s", mount_point); + goto SET_ERROR; + } + + if ((s.f_blocks > 0) || !mount_table){ + blocks_used = s.f_blocks - s.f_bfree; + blocks_percent_used = 0; + if (blocks_used + s.f_bavail) { + blocks_percent_used = (((long long) blocks_used) * 100 + + (blocks_used + s.f_bavail)/2 + ) / (blocks_used + s.f_bavail); + } + + if (strcmp(device, "rootfs") == 0) { + continue; + } else if (strcmp(device, "/dev/root") == 0) { + /* Adjusts device to be the real root device, + * or leaves device alone if it can't find it */ + if ((device = find_real_root_device_name(device)) == NULL) { + goto SET_ERROR; + } + } + +#ifdef CONFIG_FEATURE_HUMAN_READABLE + bb_printf("%-21s%9s ", device, + make_human_readable_str(s.f_blocks, s.f_bsize, df_disp_hr)); + + bb_printf("%9s ", + make_human_readable_str( (s.f_blocks - s.f_bfree), + s.f_bsize, df_disp_hr)); + + bb_printf("%9s %3ld%% %s\n", + make_human_readable_str(s.f_bavail, s.f_bsize, df_disp_hr), + blocks_percent_used, mount_point); +#else + bb_printf("%-21s%9ld %9ld %9ld %3ld%% %s\n", + device, + kscale(s.f_blocks, s.f_bsize), + kscale(s.f_blocks-s.f_bfree, s.f_bsize), + kscale(s.f_bavail, s.f_bsize), + blocks_percent_used, mount_point); +#endif + } + + } while (1); + + bb_fflush_stdout_and_exit(status); } + +/* +Local Variables: +c-file-style: "linux" +c-basic-offset: 4 +tab-width: 4 +End: +*/