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    Annotation of /trunk/mkinitrd-magellan/busybox/coreutils/mv.c

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    Revision 532 - (hide annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 8 months ago) by niro
    File MIME type: text/plain
    File size: 2879 byte(s) 
    -import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
    1 niro 532 /* vi: set sw=4 ts=4: */
    2     /*
    3     * Mini mv implementation for busybox
    4     *
    5     * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
    6     *
    7     * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
    8     */
    9    
    10     /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
    11     *
    12     * Size reduction and improved error checking.
    13     */
    14    
    15     #include <sys/types.h>
    16     #include <sys/stat.h>
    17     #include <unistd.h>
    18     #include <dirent.h>
    19     #include <errno.h>
    20     #include <stdlib.h>
    21     #include <getopt.h> /* struct option */
    22     #include "busybox.h"
    23     #include "libcoreutils/coreutils.h"
    24    
    25     #if ENABLE_FEATURE_MV_LONG_OPTIONS
    26     static const struct option mv_long_options[] = {
    27     { "interactive", 0, NULL, 'i' },
    28     { "force", 0, NULL, 'f' },
    29     { 0, 0, 0, 0 }
    30     };
    31     #endif
    32    
    33     #define OPT_FILEUTILS_FORCE 1
    34     #define OPT_FILEUTILS_INTERACTIVE 2
    35    
    36     static const char fmt[] = "cannot overwrite %sdirectory with %sdirectory";
    37    
    38     int mv_main(int argc, char **argv)
    39     {
    40     struct stat dest_stat;
    41     const char *last;
    42     const char *dest;
    43     unsigned long flags;
    44     int dest_exists;
    45     int status = 0;
    46    
    47     #if ENABLE_FEATURE_MV_LONG_OPTIONS
    48     applet_long_options = mv_long_options;
    49     #endif
    50     opt_complementary = "f-i:i-f";
    51     flags = getopt32(argc, argv, "fi");
    52     if (optind + 2 > argc) {
    53     bb_show_usage();
    54     }
    55    
    56     last = argv[argc - 1];
    57     argv += optind;
    58    
    59     if (optind + 2 == argc) {
    60     dest_exists = cp_mv_stat(last, &dest_stat);
    61     if (dest_exists < 0) {
    62     return 1;
    63     }
    64    
    65     if (!(dest_exists & 2)) {
    66     dest = last;
    67     goto DO_MOVE;
    68     }
    69     }
    70    
    71     do {
    72     dest = concat_path_file(last, bb_get_last_path_component(*argv));
    73     dest_exists = cp_mv_stat(dest, &dest_stat);
    74     if (dest_exists < 0) {
    75     goto RET_1;
    76     }
    77    
    78     DO_MOVE:
    79    
    80     if (dest_exists && !(flags & OPT_FILEUTILS_FORCE) &&
    81     ((access(dest, W_OK) < 0 && isatty(0)) ||
    82     (flags & OPT_FILEUTILS_INTERACTIVE))) {
    83     if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
    84     goto RET_1; /* Ouch! fprintf failed! */
    85     }
    86     if (!bb_ask_confirmation()) {
    87     goto RET_0;
    88     }
    89     }
    90     if (rename(*argv, dest) < 0) {
    91     struct stat source_stat;
    92     int source_exists;
    93    
    94     if (errno != EXDEV ||
    95     (source_exists = cp_mv_stat(*argv, &source_stat)) < 1) {
    96     bb_perror_msg("cannot rename '%s'", *argv);
    97     } else {
    98     if (dest_exists) {
    99     if (dest_exists == 3) {
    100     if (source_exists != 3) {
    101     bb_error_msg(fmt, "", "non-");
    102     goto RET_1;
    103     }
    104     } else {
    105     if (source_exists == 3) {
    106     bb_error_msg(fmt, "non-", "");
    107     goto RET_1;
    108     }
    109     }
    110     if (unlink(dest) < 0) {
    111     bb_perror_msg("cannot remove '%s'", dest);
    112     goto RET_1;
    113     }
    114     }
    115     if ((copy_file(*argv, dest,
    116     FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS) >= 0) &&
    117     (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)) {
    118     goto RET_0;
    119     }
    120     }
    121     RET_1:
    122     status = 1;
    123     }
    124     RET_0:
    125     if (dest != last) {
    126     free((void *) dest);
    127     }
    128     } while (*++argv != last);
    129    
    130     return status;
    131     }