Mercurial > hg > toybox
annotate toys/df.c @ 234:163498bf547b
Move NEWTOY() list from end of toylist.h to generated/newtoys.h.
author | Rob Landley <rob@landley.net> |
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date | Sat, 19 Jan 2008 17:43:27 -0600 |
parents | d4176f3f3835 |
children | 7cb15eae1664 |
rev | line source |
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1 /* vi: set sw=4 ts=4: |
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2 * |
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3 * df.c - report free disk space. |
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4 * |
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5 * Copyright 2006 Rob Landley <rob@landley.net> |
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6 * |
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7 * See http://www.opengroup.org/onlinepubs/009695399/utilities/df.html |
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8 |
234
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9 USE_DF(NEWTOY(df, "Pkt*a", TOYFLAG_USR|TOYFLAG_SBIN)) |
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10 |
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11 config DF |
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12 bool "df (disk free)" |
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13 default y |
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14 help |
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15 usage: df [-t type] [FILESYSTEM ...] |
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16 |
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17 The "disk free" command, df shows total/used/available disk space for |
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18 each filesystem listed on the command line, or all currently mounted |
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19 filesystems. |
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20 |
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21 -t type |
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22 Display only filesystems of this type. |
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23 |
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24 config DF_PEDANTIC |
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25 bool "options -P and -k" |
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26 default y |
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27 depends on DF |
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28 help |
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29 usage: df [-Pk] |
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30 |
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31 -P The SUSv3 "Pedantic" option |
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32 |
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33 Provides a slightly less useful output format dictated by |
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34 the Single Unix Specification version 3, and sets the |
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35 units to 512 bytes instead of the default 1024 bytes. |
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36 |
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37 -k Sets units back to 1024 bytes (the default without -P) |
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38 */ |
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39 |
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40 #include "toys.h" |
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41 |
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42 static void show_mt(struct mtab_list *mt) |
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43 { |
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44 int len; |
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45 long size, used, avail, percent; |
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46 uint64_t block; |
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47 |
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48 // Return if it wasn't found (should never happen, but with /etc/mtab...) |
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49 if (!mt) return; |
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50 |
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51 // If we have -t, skip other filesystem types |
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52 if (toy.df.fstype) { |
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53 struct arg_list *al; |
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54 |
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55 for (al = toy.df.fstype; al; al = al->next) { |
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56 if (!strcmp(mt->type, al->arg)) break; |
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57 } |
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58 if (!al) return; |
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59 } |
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60 |
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61 // If we don't have -a, skip synthetic filesystems |
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62 if (!(toys.optflags & 1) && !mt->statvfs.f_blocks) return; |
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63 |
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64 // Figure out how much total/used/free space this filesystem has, |
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65 // forcing 64-bit math because filesystems are big now. |
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66 block = mt->statvfs.f_bsize ? : 1; |
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67 size = (long)((block * mt->statvfs.f_blocks) / toy.df.units); |
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68 used = (long)((block * (mt->statvfs.f_blocks-mt->statvfs.f_bfree)) |
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69 / toy.df.units); |
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70 avail = (long)((block |
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71 * (getuid() ? mt->statvfs.f_bavail : mt->statvfs.f_bfree)) |
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72 / toy.df.units); |
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73 percent = size ? 100-(long)((100*(uint64_t)avail)/size) : 0; |
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74 |
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75 // Figure out appropriate spacing |
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76 len = 25 - strlen(mt->device); |
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77 if (len < 1) len = 1; |
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78 if (CFG_DF_PEDANTIC && (toys.optflags & 8)) { |
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79 printf("%s %ld %ld %ld %ld%% %s\n", mt->device, size, used, avail, |
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80 percent, mt->dir); |
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81 } else { |
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82 printf("%s% *ld % 10ld % 9ld % 3ld%% %s\n",mt->device, len, |
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83 size, used, avail, percent, mt->dir); |
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84 } |
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85 } |
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86 |
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87 void df_main(void) |
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88 { |
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89 struct mtab_list *mt, *mt2, *mtlist; |
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90 |
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91 // Handle -P and -k |
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92 toy.df.units = 1024; |
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93 if (CFG_DF_PEDANTIC && (toys.optflags & 8)) { |
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94 // Units are 512 bytes if you select "pedantic" without "kilobytes". |
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95 if ((toys.optflags&3) == 1) toy.df.units = 512; |
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96 printf("Filesystem %ld-blocks Used Available Capacity Mounted on\n", |
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97 toy.df.units); |
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98 } else puts("Filesystem\t1K-blocks\tUsed Available Use% Mounted on"); |
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99 |
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100 mtlist = getmountlist(1); |
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101 |
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102 // If we have a list of filesystems on the command line, loop through them. |
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103 if (*toys.optargs) { |
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104 char **next; |
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105 |
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106 for(next = toys.optargs; *next; next++) { |
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107 struct stat st; |
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108 |
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109 // Stat it (complain if we can't). |
27 | 110 if(stat(*next, &st)) { |
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111 perror_msg("`%s'", *next); |
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112 toys.exitval = 1; |
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113 continue; |
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114 } |
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115 |
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116 // Find and display this filesystem. Use _last_ hit in case of |
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117 // -- bind mounts. |
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118 mt2 = NULL; |
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119 for (mt = mtlist; mt; mt = mt->next) |
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120 if (st.st_dev == mt->stat.st_dev) mt2 = mt; |
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121 show_mt(mt2); |
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122 } |
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123 } else { |
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124 // Get and loop through mount list. |
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125 |
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126 for (mt = mtlist; mt; mt = mt->next) { |
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127 struct mtab_list *mt2, *mt3; |
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128 |
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129 if (!mt->stat.st_dev) continue; |
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130 |
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131 // Filter out overmounts. |
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132 mt3 = mt; |
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133 for (mt2 = mt->next; mt2; mt2 = mt2->next) { |
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134 if (mt->stat.st_dev == mt2->stat.st_dev) { |
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135 // For --bind mounts, take last match |
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136 if (!strcmp(mt->device, mt2->device)) mt3 = mt2; |
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137 // Filter out overmounts |
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138 mt2->stat.st_dev = 0; |
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139 } |
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140 } |
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141 show_mt(mt3); |
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142 } |
2
67b517913e56
Infrastructure, first drop of toy shell, and a bit of work on df.
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143 } |
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144 |
90
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Add "make defconfig". Modify global options to start with CONFIG_TOYBOX_.
Rob Landley <rob@landley.net>
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145 if (CFG_TOYBOX_FREE) llist_free(mtlist, NULL); |
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Next snapshot. Tries to grab something out of lib in order to build, I have
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146 } |