source: branches/stable/mindi-busybox/coreutils/du.c @ 1770

Last change on this file since 1770 was 1770, checked in by Bruno Cornec, 13 years ago
  • Better output for mindi-busybox revision
  • Remove dummy file created on NFS - report from Arnaud Tiger <arnaud.tiger_at_hp.com>
  • strace useful for debug
  • fix new versions for pb (2.0.0 for mindi and 1.7.2 for mindi-busybox)
  • fix build process for mindi-busybox + options used in that version (dd for label-partitions-as-necessary)
  • fix typo in label-partitions-as-necessary which doesn't seem to work
  • Update to busybox 1.7.2
  • perl is now required at restore time to support uuid swap partitions (and will be used for many other thigs

in the future for sure)

  • next mindi version will be 2.0.0 due to all the changes made in it (udev may break working distros)
  • small optimization in mindi on keyboard handling (one single find instead of multiple)
  • better interaction for USB device when launching mindi manually
  • attempt to automatically guess block disk size for ramdisk
  • fix typos in bkphw
  • Fix the remaining problem with UUID support for swap partitions
  • Updates mondoarchive man page for USB support
  • Adds preliminary Hardware support to mindi (Proliant SSSTK)
  • Tries to add udev support also for rhel4
  • Fix UUID support which was still broken.
  • Be conservative in test for the start-nfs script
  • Update config file for mindi-busybox for 1.7.2 migration
  • Try to run around a busybox bug (1.2.2 pb on inexistant links)
  • Add build content for mindi-busybox in pb
  • Remove distributions content for mindi-busybox
  • Fix a warning on inexistant raidtab
  • Solve problem on tmpfs in restore init (Problem of inexistant symlink and busybox)
  • Create MONDO_CACHE and use it everywhere + creation at start
  • Really never try to eject a USB device
  • Fix a issue with &> usage (replaced with 1> and 2>)
  • Adds magic file to depllist in order to have file working + ldd which helps for debugging issues
  • tty modes correct to avoid sh error messages
  • Use ext3 normally and not ext2 instead
  • USB device should be corrected after reading (take 1st part)
  • Adds a mount_USB_here function derived from mount_CDROM_here
  • usb detection place before /dev detection in device name at restore time
  • Fix when restoring from USB: media is asked in interactive mode
  • Adds USB support for mondorestore
  • mount_cdrom => mount_media
  • elilo.efi is now searched throughout /boot/efi and not in a fixed place as there is no standard
  • untar-and-softlink => untar (+ interface change)
  • suppress useless softlinks creation/removal in boot process
  • avoids udevd messages on groups
  • Increase # of disks to 99 as in mindi at restore time (should be a conf file parameter)
  • skip existing big file creation
  • seems to work correctly for USB mindi boot
  • Adds group and tty link to udev conf
  • Always load usb-torage (even 2.6) to initiate USB bus discovery
  • Better printing of messages
  • Attempt to fix a bug in supporting OpenSusE 10.3 kernel for initramfs (mindi may now use multiple regex for kernel initrd detection)
  • Links were not correctly done as non relative for modules in mindi
  • exclusion of modules denied now works
  • Also create modules in their ordinary place, so that classical modprobe works + copy modules.dep
  • Fix bugs for DENY_MODS handling
  • Add device /dev/console for udev
  • ide-generic should now really be excluded
  • Fix a bug in major number for tty
  • If udev then adds modprobe/insmod to rootfs
  • tty0 is also cretaed with udev
  • ide-generic put rather in DENY_MODS
  • udevd remove from deplist s handled in mindi directly
  • better default for mindi when using --usb
  • Handles dynamically linked busybox (in case we want to use it soon ;-)
  • Adds fixed devices to create for udev
  • ide-generic should not be part of the initrd when using libata v2
  • support a dynamically linked udev (case on Ubuntu 7.10 and Mandriva 2008.0 so should be quite generic) This will give incitation to move to dyn. linked binaries in the initrd which will help for other tasks (ia6 4)
  • Improvement in udev support (do not use cl options not available in busybox)
  • Udev in mindi
    • auto creation of the right links at boot time with udev-links.conf(from Mandriva 2008.0)
    • rework startup of udev as current makes kernel crash (from Mandriva 2008.0)
    • add support for 64 bits udev
  • Try to render MyInsmod? silent at boot time
  • Adds udev support (mandatory for newest distributions to avoid remapping of devices in a different way as on the original system)
  • We also need vaft format support for USB boot
  • Adds libusual support (Ubuntu 7.10 needs it for USB)
  • Improve Ubuntu/Debian? keyboard detection and support
  • pbinit adapted to new pb (0.8.10). Filtering of docs done in it
  • Suppress some mondo warnings and errors on USB again
  • Tries to fix lack of files in deb mindi package
  • Verify should now work for USB devices
  • More log/mesages improvement for USB support
  • - Supress g_erase_tmpdir_and_scratchdir
  • Improve some log messages for USB support
  • Try to improve install in mindi to avoid issues with isolinux.cfg not installed vene if in the pkg :-(
  • Improve mindi-busybox build
  • In conformity with pb 0.8.9
  • Add support for Ubuntu 7.10 in build process
  • Add USB Key button to Menu UI (CD streamer removed)
  • Attempt to fix error messages on tmp/scratch files at the end by removing those dir at the latest possible.
  • Fix a bug linked to the size of the -E param which could be used (Arnaud Tiger/René? Ribaud).
  • Integrate ~/.pbrc content into mondorescue.pb (required project-builder >= 0.8.7)
  • Put mondorescue in conformity with new pb filtering rules
  • Add USB support at restore time (no test done yet). New start-usb script PB varibale added where useful
  • Unmounting USB device before removal of temporary scratchdir
  • Stil refining USB copy back to mondo (one command was not executed)
  • No need to have the image subdor in the csratchdir when USB.
  • umount the USB partition before attempting to use it
  • Remove useless copy from mindi to mondo at end of USB handling

(risky merge, we are raising the limits of 2 diverging branches. The status of stable is not completely sure as such. Will need lots of tests, but it's not yet done :-()
(merge -r1692:1769 $SVN_M/branches/2.2.5)

File size: 5.6 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * Mini du implementation for busybox
4 *
5 * Copyright (C) 1999,2000,2001 by Lineo, inc. and John Beppu
6 * Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.org>
7 * Copyright (C) 2002  Edward Betts <edward@debian.org>
8 *
9 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
10 */
11
12/* BB_AUDIT SUSv3 compliant (unless default blocksize set to 1k) */
13/* http://www.opengroup.org/onlinepubs/007904975/utilities/du.html */
14
15/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
16 *
17 * Mostly rewritten for SUSv3 compliance and to fix bugs/defects.
18 * 1) Added support for SUSv3 -a, -H, -L, gnu -c, and (busybox) -d options.
19 *    The -d option allows setting of max depth (similar to gnu --max-depth).
20 * 2) Fixed incorrect size calculations for links and directories, especially
21 *    when errors occurred.  Calculates sizes should now match gnu du output.
22 * 3) Added error checking of output.
23 * 4) Fixed busybox bug #1284 involving long overflow with human_readable.
24 */
25
26#include "libbb.h"
27
28#if ENABLE_FEATURE_HUMAN_READABLE
29# if ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
30static unsigned long disp_hr = 1024;
31# else
32static unsigned long disp_hr = 512;
33# endif
34#elif ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
35static unsigned disp_k = 1;
36#else
37static unsigned disp_k; /* bss inits to 0 */
38#endif
39
40static int max_print_depth = INT_MAX;
41static nlink_t count_hardlinks = 1;
42
43static int status;
44static int print_files;
45static int slink_depth;
46static int du_depth;
47static int one_file_system;
48static dev_t dir_dev;
49
50
51static void print(long size, const char *const filename)
52{
53    /* TODO - May not want to defer error checking here. */
54#if ENABLE_FEATURE_HUMAN_READABLE
55    printf("%s\t%s\n", make_human_readable_str(size, 512, disp_hr),
56            filename);
57#else
58    if (disp_k) {
59        size++;
60        size >>= 1;
61    }
62    printf("%ld\t%s\n", size, filename);
63#endif
64}
65
66/* tiny recursive du */
67static long du(const char *const filename)
68{
69    struct stat statbuf;
70    long sum;
71
72    if (lstat(filename, &statbuf) != 0) {
73        bb_perror_msg("%s", filename);
74        status = EXIT_FAILURE;
75        return 0;
76    }
77
78    if (one_file_system) {
79        if (du_depth == 0) {
80            dir_dev = statbuf.st_dev;
81        } else if (dir_dev != statbuf.st_dev) {
82            return 0;
83        }
84    }
85
86    sum = statbuf.st_blocks;
87
88    if (S_ISLNK(statbuf.st_mode)) {
89        if (slink_depth > du_depth) {   /* -H or -L */
90            if (stat(filename, &statbuf) != 0) {
91                bb_perror_msg("%s", filename);
92                status = EXIT_FAILURE;
93                return 0;
94            }
95            sum = statbuf.st_blocks;
96            if (slink_depth == 1) {
97                slink_depth = INT_MAX;  /* Convert -H to -L. */
98            }
99        }
100    }
101
102    if (statbuf.st_nlink > count_hardlinks) {
103        /* Add files/directories with links only once */
104        if (is_in_ino_dev_hashtable(&statbuf)) {
105            return 0;
106        }
107        add_to_ino_dev_hashtable(&statbuf, NULL);
108    }
109
110    if (S_ISDIR(statbuf.st_mode)) {
111        DIR *dir;
112        struct dirent *entry;
113        char *newfile;
114
115        dir = warn_opendir(filename);
116        if (!dir) {
117            status = EXIT_FAILURE;
118            return sum;
119        }
120
121        newfile = last_char_is(filename, '/');
122        if (newfile)
123            *newfile = '\0';
124
125        while ((entry = readdir(dir))) {
126            char *name = entry->d_name;
127
128            newfile = concat_subpath_file(filename, name);
129            if (newfile == NULL)
130                continue;
131            ++du_depth;
132            sum += du(newfile);
133            --du_depth;
134            free(newfile);
135        }
136        closedir(dir);
137    } else if (du_depth > print_files) {
138        return sum;
139    }
140    if (du_depth <= max_print_depth) {
141        print(sum, filename);
142    }
143    return sum;
144}
145
146int du_main(int argc, char **argv);
147int du_main(int argc, char **argv)
148{
149    long total;
150    int slink_depth_save;
151    int print_final_total;
152    char *smax_print_depth;
153    unsigned opt;
154
155#if ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
156    if (getenv("POSIXLY_CORRECT")) {    /* TODO - a new libbb function? */
157#if ENABLE_FEATURE_HUMAN_READABLE
158        disp_hr = 512;
159#else
160        disp_k = 0;
161#endif
162    }
163#endif
164
165    /* Note: SUSv3 specifies that -a and -s options cannot be used together
166     * in strictly conforming applications.  However, it also says that some
167     * du implementations may produce output when -a and -s are used together.
168     * gnu du exits with an error code in this case.  We choose to simply
169     * ignore -a.  This is consistent with -s being equivalent to -d 0.
170     */
171#if ENABLE_FEATURE_HUMAN_READABLE
172    opt_complementary = "h-km:k-hm:m-hk:H-L:L-H:s-d:d-s";
173    opt = getopt32(argv, "aHkLsx" "d:" "lc" "hm", &smax_print_depth);
174    if (opt & (1 << 9)) {
175        /* -h opt */
176        disp_hr = 0;
177    }
178    if (opt & (1 << 10)) {
179        /* -m opt */
180        disp_hr = 1024*1024;
181    }
182    if (opt & (1 << 2)) {
183        /* -k opt */
184        disp_hr = 1024;
185    }
186#else
187    opt_complementary = "H-L:L-H:s-d:d-s";
188    opt = getopt32(argv, "aHkLsx" "d:" "lc", &smax_print_depth);
189#if !ENABLE_FEATURE_DU_DEFAULT_BLOCKSIZE_1K
190    if (opt & (1 << 2)) {
191        /* -k opt */
192        disp_k = 1;
193    }
194#endif
195#endif
196    if (opt & (1 << 0)) {
197        /* -a opt */
198        print_files = INT_MAX;
199    }
200    if (opt & (1 << 1)) {
201        /* -H opt */
202        slink_depth = 1;
203    }
204    if (opt & (1 << 3)) {
205        /* -L opt */
206        slink_depth = INT_MAX;
207    }
208    if (opt & (1 << 4)) {
209        /* -s opt */
210        max_print_depth = 0;
211    }
212    one_file_system = opt & (1 << 5); /* -x opt */
213    if (opt & (1 << 6)) {
214        /* -d opt */
215        max_print_depth = xatoi_u(smax_print_depth);
216    }
217    if (opt & (1 << 7)) {
218        /* -l opt */
219        count_hardlinks = MAXINT(nlink_t);
220    }
221    print_final_total = opt & (1 << 8); /* -c opt */
222
223    /* go through remaining args (if any) */
224    argv += optind;
225    if (optind >= argc) {
226        *--argv = (char*)".";
227        if (slink_depth == 1) {
228            slink_depth = 0;
229        }
230    }
231
232    slink_depth_save = slink_depth;
233    total = 0;
234    do {
235        total += du(*argv);
236        slink_depth = slink_depth_save;
237    } while (*++argv);
238    if (ENABLE_FEATURE_CLEAN_UP)
239        reset_ino_dev_hashtable();
240    if (print_final_total) {
241        print(total, "total");
242    }
243
244    fflush_stdout_and_exit(status);
245}
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