* archival/bunzip2.c (bunzip2_main): Do not remove files if writing to standard

[oweals/busybox.git] / coreutils / df.c

diff --git a/coreutils/df.c b/coreutils/df.c
index 9f8770fe6949b36e3fdd83ea076fce523e7b734a..0e9e5d61a4dfaadf061cae25e3977fe5046bf49f 100644 (file)
--- a/coreutils/df.c
+++ b/coreutils/df.c
@@ -2,8 +2,8 @@
 /*
  * Mini df implementation for busybox
  *
- * Copyright (C) 1999,2000,2001 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * 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
@@ -24,27 +24,25 @@
 
 #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_READABLE
-static unsigned long disp_hr = KILOBYTE; 
+#ifdef CONFIG_FEATURE_HUMAN_READABLE
+static unsigned long df_disp_hr = KILOBYTE; 
 #endif
 
-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;
-#ifdef BB_FEATURE_HUMAN_READABLE
-       long base;
-#endif 
 
-       if (statfs(mountPoint, &s) != 0) {
-               perror_msg("%s", mountPoint);
+       if (statfs(mount_point, &s) != 0) {
+               perror_msg("%s", mount_point);
                return FALSE;
        }
 
@@ -59,33 +57,27 @@ static int df(char *device, const char *mountPoint)
                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 (disp_hr) {
-                       case MEGABYTE:
-                               base = KILOBYTE;
-                               break;
-                       case KILOBYTE:
-                               base = 1;
-                               break;
-                       default:
-                               base = 0;
+                       device = find_real_root_device_name(device);
+                       if(device==NULL)
+                               return FALSE;
                }
+#ifdef CONFIG_FEATURE_HUMAN_READABLE
                printf("%-20s %9s ", device,
-                          format(s.f_blocks * (s.f_bsize/KILOBYTE), base));
+                               make_human_readable_str(s.f_blocks, s.f_bsize, df_disp_hr));
+
                printf("%9s ",
-                          format((s.f_blocks - s.f_bfree) * (s.f_bsize/KILOBYTE), base));
+                               make_human_readable_str( (s.f_blocks - s.f_bfree), s.f_bsize, df_disp_hr));
+
                printf("%9s %3ld%% %s\n",
-                          format(s.f_bavail * (s.f_bsize/KILOBYTE), base),
-                          blocks_percent_used, mountPoint);
+                               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 / KILOBYTE)),
-                               (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / KILOBYTE)),
-                               (long) (s.f_bavail * (s.f_bsize / KILOBYTE)),
-                               blocks_percent_used, mountPoint);
+                               (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
        }
 
@@ -97,60 +89,61 @@ 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, 
-#ifdef BB_FEATURE_HUMAN_READABLE
+       while ((opt = getopt(argc, argv, "k"
+#ifdef CONFIG_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;
+#ifdef CONFIG_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': break;
+                       case 'k':
+                               /* default display is kilobytes */
+                               break;
                        default:
                                          show_usage();
                }
        }
 
-       printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
-#ifdef BB_FEATURE_HUMAN_READABLE
-                       (KILOBYTE == disp_hr) ? "1k-blocks" :
-                       (MEGABYTE == disp_hr) ? "1M-blocks" : "     Size",
-#else
-                  "1k-blocks",
-#endif
+       printf("%-20s %-14s %s %s %s %s\n", "Filesystem", disp_units_hdr,
               "Used", "Available", "Use%", "Mounted on");
 
-
        if(optind < argc) {
-               struct mntent *mountEntry;
+               struct mntent *mount_entry;
                for(i = optind; i < argc; i++)
                {
-                       if ((mountEntry = find_mount_point(argv[i], mtab_file)) == 0) {
+                       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 (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
+                       } else if (!do_df(mount_entry->mnt_fsname, mount_entry->mnt_dir))
                                status = EXIT_FAILURE;
                }
        } else {
-               FILE *mountTable;
-               struct mntent *mountEntry;
+               FILE *mount_table;
+               struct mntent *mount_entry;
 
-               mountTable = setmntent(mtab_file, "r");
-               if (mountTable == 0) {
+               mount_table = setmntent(mtab_file, "r");
+               if (mount_table == 0) {
                        perror_msg("%s", mtab_file);
                        return EXIT_FAILURE;
                }
 
-               while ((mountEntry = getmntent(mountTable))) {
-                       if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
+               while ((mount_entry = getmntent(mount_table))) {
+                       if (!do_df(mount_entry->mnt_fsname, mount_entry->mnt_dir))
                                status = EXIT_FAILURE;
                }
-               endmntent(mountTable);
+               endmntent(mount_table);
        }
 
        return status;