X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=df.c;h=21a1dbb319fc3a04d619606437d3d2458e412bec;hb=a8035a51be6ddaf636847cfb1524b1beed0e8d18;hp=24c94a246eabc0a0f02c5cd3266b1791e405ad10;hpb=0881de706e479877ef68e0b859eb0d2594695e8e;p=oweals%2Fbusybox.git diff --git a/df.c b/df.c index 24c94a246..21a1dbb31 100644 --- a/df.c +++ b/df.c @@ -1,7 +1,8 @@ +/* vi: set sw=4 ts=4: */ /* * Mini df implementation for busybox * - * Copyright (C) 1999 by Lineo, inc. + * Copyright (C) 1999,2000,2001 by Lineo, inc. * Written by Erik Andersen , * based on original code by (I think) Bruce Perens . * @@ -21,89 +22,150 @@ * */ -#include "internal.h" #include +#include +#include #include -#include #include -#include +#include +#include "busybox.h" -static const char df_usage[] = "df [filesystem ...]\n" - "\n" "\tPrint the filesystem space used and space available.\n"; +extern const char mtab_file[]; /* Defined in utility.c */ +#ifdef BB_FEATURE_HUMAN_READABLE +static unsigned long df_disp_hr = KILOBYTE; +#endif -extern const char mtab_file[]; /* Defined in utility.c */ - -static int df(char *device, const char *mountPoint) +static int do_df(char *device, const char *mount_point) { - struct statfs s; - long blocks_used; - long blocks_percent_used; - struct fstab* fstabItem; - - if (statfs(mountPoint, &s) != 0) { - perror(mountPoint); - return FALSE; - } + struct statfs s; + long blocks_used; + long blocks_percent_used; +#ifdef BB_FEATURE_HUMAN_READABLE + long base; +#endif - 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; + if (statfs(mount_point, &s) != 0) { + perror_msg("%s", mount_point); + return FALSE; } - 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); - } + 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 */ + find_real_root_device_name( device); + } +#ifdef BB_FEATURE_HUMAN_READABLE + switch (df_disp_hr) { + case MEGABYTE: + base = KILOBYTE; + break; + case KILOBYTE: + base = 1; + break; + default: + base = 0; + } + printf("%-20s %9s ", device, + make_human_readable_str((unsigned long)(s.f_blocks * + (s.f_bsize/(double)KILOBYTE)), base)); + printf("%9s ", + make_human_readable_str((unsigned long)( + (s.f_blocks - s.f_bfree) * + (s.f_bsize/(double)KILOBYTE)), base)); + printf("%9s %3ld%% %s\n", + make_human_readable_str((unsigned long)(s.f_bavail * + (s.f_bsize/(double)KILOBYTE)), base), + 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; + return TRUE; } extern int df_main(int argc, char **argv) { - printf("%-20s %-14s %s %s %s %s\n", "Filesystem", - "1k-blocks", "Used", "Available", "Use%", "Mounted on"); + int status = EXIT_SUCCESS; + int opt = 0; + int i = 0; + char disp_units_hdr[80] = "1k-blocks"; /* default display is kilobytes */ - if (argc > 1) { - struct mntent *mountEntry; - int status; - - 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++; + 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(); + } } - exit( TRUE); - } else { - FILE *mountTable; - struct mntent *mountEntry; - mountTable = setmntent(mtab_file, "r"); - if (mountTable == 0) { - perror(mtab_file); - exit(FALSE); - } + printf("%-20s %-14s %s %s %s %s\n", "Filesystem", disp_units_hdr, + "Used", "Available", "Use%", "Mounted on"); - while ((mountEntry = getmntent(mountTable))) { - df(mountEntry->mnt_fsname, mountEntry->mnt_dir); + 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); } - endmntent(mountTable); - } - exit( TRUE); + return status; } + +/* +Local Variables: +c-file-style: "linux" +c-basic-offset: 4 +tab-width: 4 +End: +*/