[1704] | 1 | /* |
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| 2 | * $Source: /afs/dev.mit.edu/source/repository/athena/bin/delete/expunge.c,v $ |
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| 3 | * $Author: jik $ |
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| 4 | * |
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| 5 | * This program is part of a package including delete, undelete, |
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| 6 | * lsdel, expunge and purge. The software suite is meant as a |
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| 7 | * replacement for rm which allows for file recovery. |
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| 8 | * |
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| 9 | * Copyright (c) 1989 by the Massachusetts Institute of Technology. |
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| 10 | * For copying and distribution information, see the file "mit-copyright.h." |
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| 11 | */ |
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| 12 | |
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| 13 | #if (!defined(lint) && !defined(SABER)) |
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[2179] | 14 | static char rcsid_expunge_c[] = "$Header: /afs/dev.mit.edu/source/repository/athena/bin/delete/expunge.c,v 1.10 1989-10-23 13:37:44 jik Exp $"; |
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[1704] | 15 | #endif |
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| 16 | |
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| 17 | #include <stdio.h> |
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| 18 | #include <sys/types.h> |
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| 19 | #include <sys/time.h> |
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| 20 | #include <sys/dir.h> |
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| 21 | #include <sys/param.h> |
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| 22 | #include <strings.h> |
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| 23 | #include <sys/stat.h> |
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[2179] | 24 | #include <com_err.h> |
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| 25 | #include <errno.h> |
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[1732] | 26 | #include "col.h" |
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[1704] | 27 | #include "directories.h" |
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| 28 | #include "util.h" |
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| 29 | #include "pattern.h" |
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| 30 | #include "expunge.h" |
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[2179] | 31 | #include "shell_regexp.h" |
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[1811] | 32 | #include "mit-copyright.h" |
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[2179] | 33 | #include "delete_errs.h" |
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| 34 | #include "errors.h" |
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[1704] | 35 | |
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| 36 | extern char *malloc(), *realloc(); |
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[2179] | 37 | extern long current_time; |
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| 38 | extern int errno; |
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[1704] | 39 | |
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[2179] | 40 | char *whoami; |
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[1704] | 41 | |
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[1732] | 42 | int timev, /* minimum mod time before undeletion */ |
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[1704] | 43 | interactive, /* query before each expunge */ |
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| 44 | recursive, /* expunge undeleted directories recursively */ |
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| 45 | noop, /* print what would be done instead of doing it */ |
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| 46 | verbose, /* print a line as each file is deleted */ |
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| 47 | force, /* do not ask for any confirmation */ |
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[1732] | 48 | listfiles, /* list files at toplevel */ |
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| 49 | yield; /* print yield of expunge at end */ |
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[1704] | 50 | |
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[1732] | 51 | int blocks_removed = 0; |
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[1704] | 52 | |
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| 53 | |
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| 54 | |
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| 55 | |
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| 56 | main(argc, argv) |
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| 57 | int argc; |
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| 58 | char *argv[]; |
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| 59 | { |
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| 60 | extern char *optarg; |
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| 61 | extern int optind; |
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| 62 | int arg; |
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| 63 | |
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[2179] | 64 | initialize_del_error_table(); |
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| 65 | |
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[1704] | 66 | whoami = lastpart(argv[0]); |
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| 67 | if (*whoami == 'p') { /* we're doing a purge */ |
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[2179] | 68 | if (purge()) |
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| 69 | error("purge"); |
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| 70 | exit(error_occurred ? 1 : 0); |
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[1704] | 71 | } |
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[1732] | 72 | timev = 0; |
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| 73 | yield = interactive = recursive = noop = verbose = listfiles = force = 0; |
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[2179] | 74 | while ((arg = getopt(argc, argv, "t:irfnvly")) != EOF) { |
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[1704] | 75 | switch (arg) { |
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| 76 | case 't': |
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[1732] | 77 | timev = atoi(optarg); |
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[1704] | 78 | break; |
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| 79 | case 'i': |
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| 80 | interactive++; |
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| 81 | break; |
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| 82 | case 'r': |
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| 83 | recursive++; |
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| 84 | break; |
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| 85 | case 'f': |
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| 86 | force++; |
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| 87 | break; |
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| 88 | case 'n': |
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| 89 | noop++; |
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| 90 | break; |
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| 91 | case 'v': |
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| 92 | verbose++; |
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| 93 | break; |
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| 94 | case 'l': |
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| 95 | listfiles++; |
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| 96 | break; |
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[1732] | 97 | case 'y': |
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| 98 | yield++; |
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| 99 | break; |
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[1704] | 100 | default: |
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| 101 | usage(); |
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| 102 | exit(1); |
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| 103 | } |
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| 104 | } |
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| 105 | if (optind == argc) { |
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| 106 | char *dir; |
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[2179] | 107 | dir = "."; /* current working directory */ |
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| 108 | if (expunge(&dir, 1)) |
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| 109 | error("expunging ."); |
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[1704] | 110 | } |
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[2179] | 111 | else if (expunge(&argv[optind], argc - optind)) |
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| 112 | error("expunge"); |
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| 113 | |
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| 114 | exit((error_occurred && (! force)) ? 1 : 0); |
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[1704] | 115 | } |
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| 116 | |
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| 117 | |
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| 118 | |
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| 119 | |
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| 120 | |
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| 121 | purge() |
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| 122 | { |
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[2179] | 123 | char *home; |
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| 124 | int retval; |
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| 125 | |
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| 126 | home = malloc(MAXPATHLEN); |
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| 127 | if (! home) { |
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| 128 | set_error(errno); |
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| 129 | error("purge"); |
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| 130 | return error_code; |
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[1704] | 131 | } |
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[1732] | 132 | timev = interactive = noop = verbose = force = 0; |
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| 133 | yield = listfiles = recursive = 1; |
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[2179] | 134 | if (retval = get_home(home)) { |
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| 135 | error("purge"); |
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| 136 | return retval; |
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[1704] | 137 | } |
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| 138 | |
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| 139 | printf("Please be patient.... this may take a while.\n\n"); |
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[2179] | 140 | |
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| 141 | if (retval = expunge(&home, 1)) { |
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| 142 | error("expunge"); |
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| 143 | return retval; |
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| 144 | } |
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[1704] | 145 | } |
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| 146 | |
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| 147 | |
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| 148 | |
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| 149 | |
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| 150 | usage() |
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| 151 | { |
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| 152 | printf("Usage: %s [ options ] [ filename [ ... ]]\n", whoami); |
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| 153 | printf("Options are:\n"); |
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| 154 | printf(" -r recursive\n"); |
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| 155 | printf(" -i interactive\n"); |
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| 156 | printf(" -f force\n"); |
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| 157 | printf(" -t n n-day-or-older expunge\n"); |
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| 158 | printf(" -n noop\n"); |
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| 159 | printf(" -v verbose\n"); |
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| 160 | printf(" -l list files before expunging\n"); |
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[1732] | 161 | printf(" -y print yield of expunge\n"); |
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[1707] | 162 | printf(" -- end options and start filenames\n"); |
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[1704] | 163 | } |
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| 164 | |
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| 165 | |
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| 166 | |
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| 167 | |
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| 168 | |
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[2179] | 169 | int expunge(files, num) |
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[1704] | 170 | char **files; |
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| 171 | int num; |
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| 172 | { |
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| 173 | char *file_re; |
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| 174 | char **found_files; |
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| 175 | int num_found; |
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| 176 | char *start_dir; |
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| 177 | int status = 0; |
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| 178 | int total = 0; |
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| 179 | filerec *current; |
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[2179] | 180 | int retval; |
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[1704] | 181 | |
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| 182 | if (initialize_tree()) |
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| 183 | exit(1); |
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| 184 | |
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| 185 | for ( ; num ; num--) { |
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| 186 | if (*files[num - 1] == '/') { |
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| 187 | start_dir = "/"; |
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[2179] | 188 | file_re = files[num - 1] + 1; |
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[1704] | 189 | } |
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| 190 | else { |
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| 191 | start_dir = ""; |
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[2179] | 192 | file_re = files[num - 1]; |
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[1704] | 193 | } |
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| 194 | |
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[2179] | 195 | retval = get_the_files(start_dir, file_re, &num_found, &found_files); |
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| 196 | if (retval) { |
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| 197 | error(files[num - 1]); |
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| 198 | return retval; |
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| 199 | } |
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| 200 | |
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| 201 | if (num_found) { |
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[1732] | 202 | num_found = process_files(found_files, num_found); |
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[2179] | 203 | if (num_found < 0) { |
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| 204 | error("process_files"); |
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| 205 | return error_code; |
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| 206 | } |
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| 207 | } |
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| 208 | |
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[1732] | 209 | total += num_found; |
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| 210 | if (! num_found) if (! force) { |
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[1753] | 211 | /* |
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| 212 | * There are three different situations here. Eiter we |
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| 213 | * are dealing with an existing directory with no |
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| 214 | * deleted files in it, or we are deleting with a |
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| 215 | * non-existing deleted file with wildcards, or we are |
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| 216 | * dealing with a non-existing deleted file without |
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| 217 | * wildcards. In the former case we print nothing, and |
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| 218 | * in the latter cases we print either "no match" or |
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| 219 | * "not found" respectively |
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| 220 | */ |
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| 221 | if (no_wildcards(file_re)) { |
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| 222 | if (! directory_exists(files[num - 1])) { |
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[2179] | 223 | set_error(ENOENT); |
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| 224 | error(files[num - 1]); |
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[1753] | 225 | } |
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| 226 | } |
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| 227 | else { |
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[2179] | 228 | set_error(ENOMATCH); |
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| 229 | error(files[num - 1]); |
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[1753] | 230 | } |
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[1704] | 231 | } |
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| 232 | } |
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| 233 | if (total && listfiles) { |
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[2179] | 234 | if (retval = list_files()) { |
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| 235 | error("list_files"); |
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| 236 | return retval; |
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| 237 | } |
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| 238 | if (! force) if (! top_level()) { |
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| 239 | set_status(EXPUNGE_NOT_EXPUNGED); |
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| 240 | return error_code; |
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| 241 | } |
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[1704] | 242 | } |
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[1732] | 243 | current = get_root_tree(); |
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[2179] | 244 | if (current) { |
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| 245 | if (retval = expunge_specified(current)) { |
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| 246 | error("expunge_specified"); |
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| 247 | status = retval; |
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| 248 | } |
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| 249 | } |
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[1732] | 250 | current = get_cwd_tree(); |
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[2179] | 251 | if (current) { |
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| 252 | if (retval = expunge_specified(current)) { |
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| 253 | error("expunge_specified"); |
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| 254 | status = retval; |
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| 255 | } |
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| 256 | } |
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[1732] | 257 | if (yield) { |
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| 258 | if (noop) |
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| 259 | printf("Total that would be expunged: %dk\n", |
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| 260 | blk_to_k(blocks_removed)); |
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| 261 | else |
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| 262 | printf("Total expunged: %dk\n", blk_to_k(blocks_removed)); |
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| 263 | } |
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[2179] | 264 | return status; |
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[1704] | 265 | } |
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| 266 | |
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| 267 | |
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| 268 | |
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[1732] | 269 | expunge_specified(leaf) |
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| 270 | filerec *leaf; |
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| 271 | { |
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| 272 | int status = 0; |
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[2179] | 273 | int do_it = 1; |
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| 274 | int retval; |
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| 275 | |
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| 276 | if ((leaf->specified) && ((leaf->specs.st_mode & S_IFMT) == S_IFDIR)) { |
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| 277 | char buf[MAXPATHLEN]; |
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[1704] | 278 | |
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[2179] | 279 | if (retval = get_leaf_path(leaf, buf)) { |
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| 280 | error("get_leaf_path"); |
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| 281 | return retval; |
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| 282 | } |
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| 283 | convert_to_user_name(buf, buf); |
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| 284 | |
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| 285 | if (interactive) { |
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| 286 | printf("%s: Expunge directory %s? ", whoami, buf); |
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| 287 | status = (! (do_it = yes())); |
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| 288 | } |
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[1850] | 289 | } |
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[2179] | 290 | if (do_it) { |
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| 291 | if (leaf->dirs) { |
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| 292 | if (retval = expunge_specified(leaf->dirs)) { |
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| 293 | error("expunge_specified"); |
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| 294 | status = retval; |
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| 295 | } |
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| 296 | } |
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| 297 | if (leaf->files) { |
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| 298 | if (retval = expunge_specified(leaf->files)) { |
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| 299 | error("expunge_specified"); |
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| 300 | status = retval; |
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| 301 | } |
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| 302 | } |
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[1732] | 303 | } |
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[2179] | 304 | if (leaf->specified && (! status)) { |
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| 305 | if (retval = really_do_expunge(leaf)) { |
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| 306 | error("really_do_expunge"); |
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| 307 | status = retval; |
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| 308 | } |
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| 309 | } |
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| 310 | if (leaf->next) { |
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| 311 | if (retval = expunge_specified(leaf->next)) { |
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| 312 | error("expunge_specified"); |
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| 313 | status = retval; |
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| 314 | } |
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| 315 | } |
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| 316 | |
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[1732] | 317 | free_leaf(leaf); |
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[2179] | 318 | return status; |
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[1732] | 319 | } |
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[1704] | 320 | |
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[1732] | 321 | |
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[1704] | 322 | process_files(files, num) |
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| 323 | char **files; |
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| 324 | int num; |
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| 325 | { |
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[1831] | 326 | int i, skipped = 0; |
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[1732] | 327 | filerec *leaf; |
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| 328 | |
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[1704] | 329 | for (i = 0; i < num; i++) { |
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[2179] | 330 | if (add_path_to_tree(files[i], &leaf)) { |
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| 331 | error("add_path_to_tree"); |
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| 332 | return -1; |
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[1704] | 333 | } |
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[1732] | 334 | free(files[i]); |
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| 335 | if (! timed_out(leaf, current_time, timev)) { |
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| 336 | free_leaf(leaf); |
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[1831] | 337 | skipped++; |
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[1704] | 338 | } |
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| 339 | } |
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[2179] | 340 | free((char *) files); |
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[1831] | 341 | return(num-skipped); |
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[1704] | 342 | } |
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| 343 | |
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| 344 | |
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| 345 | |
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| 346 | |
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| 347 | |
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| 348 | |
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| 349 | |
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| 350 | |
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| 351 | |
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| 352 | really_do_expunge(file_ent) |
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| 353 | filerec *file_ent; |
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| 354 | { |
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| 355 | char real[MAXPATHLEN], user[MAXPATHLEN]; |
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| 356 | int status; |
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[2179] | 357 | int retval; |
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[1704] | 358 | |
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[2179] | 359 | if (retval = get_leaf_path(file_ent, real)) { |
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| 360 | error("get_leaf_path"); |
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| 361 | return retval; |
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| 362 | } |
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[1704] | 363 | convert_to_user_name(real, user); |
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| 364 | |
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| 365 | if (interactive) { |
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[1732] | 366 | printf ("%s: Expunge %s (%dk)? ", whoami, user, |
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| 367 | blk_to_k(file_ent->specs.st_blocks)); |
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[2179] | 368 | if (! yes()) { |
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| 369 | set_status(EXPUNGE_NOT_EXPUNGED); |
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| 370 | return error_code; |
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| 371 | } |
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[1704] | 372 | } |
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| 373 | |
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| 374 | if (noop) { |
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[1732] | 375 | blocks_removed += file_ent->specs.st_blocks; |
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| 376 | printf("%s: %s (%dk) would be expunged (%dk total)\n", whoami, user, |
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| 377 | blk_to_k(file_ent->specs.st_blocks), |
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| 378 | blk_to_k(blocks_removed)); |
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[2179] | 379 | return 0; |
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[1704] | 380 | } |
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| 381 | |
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[1732] | 382 | if ((file_ent->specs.st_mode & S_IFMT) == S_IFDIR) |
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[1704] | 383 | status = rmdir(real); |
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| 384 | else |
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| 385 | status = unlink(real); |
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| 386 | if (! status) { |
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[1732] | 387 | blocks_removed += file_ent->specs.st_blocks; |
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[1704] | 388 | if (verbose) |
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[1732] | 389 | printf("%s: %s (%dk) expunged (%dk total)\n", whoami, user, |
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| 390 | blk_to_k(file_ent->specs.st_blocks), |
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| 391 | blk_to_k(blocks_removed)); |
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[2179] | 392 | return 0; |
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[1704] | 393 | } |
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| 394 | else { |
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[2179] | 395 | set_error(errno); |
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| 396 | error(real); |
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| 397 | return error_code; |
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[1704] | 398 | } |
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| 399 | } |
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| 400 | |
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| 401 | |
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| 402 | |
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| 403 | |
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| 404 | |
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| 405 | |
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| 406 | |
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| 407 | |
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| 408 | |
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| 409 | top_level() |
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| 410 | { |
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| 411 | if (interactive) { |
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| 412 | printf("The above files, which have been marked for deletion, are about to be\n"); |
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| 413 | printf("expunged forever! You will be asked for confirmation before each file is\n"); |
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[1757] | 414 | printf("deleted. Do you wish to continue [return = no]? "); |
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[1704] | 415 | } |
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| 416 | else { |
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| 417 | printf("The above files, which have been marked for deletion, are about to be\n"); |
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| 418 | printf("expunged forever! Make sure you don't need any of them before continuing.\n"); |
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[1757] | 419 | printf("Do you wish to continue [return = no]? "); |
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[1704] | 420 | } |
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| 421 | return (yes()); |
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| 422 | } |
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| 423 | |
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[1732] | 424 | |
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| 425 | |
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| 426 | |
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| 427 | |
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[1704] | 428 | list_files() |
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| 429 | { |
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| 430 | filerec *current; |
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[1732] | 431 | char **strings; |
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| 432 | int num; |
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[2179] | 433 | int retval; |
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[1704] | 434 | |
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[1732] | 435 | strings = (char **) malloc(sizeof(char *)); |
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| 436 | num = 0; |
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| 437 | if (! strings) { |
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[2179] | 438 | set_error(errno); |
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| 439 | error("malloc"); |
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| 440 | return error_code; |
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[1732] | 441 | } |
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[2179] | 442 | |
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[1704] | 443 | printf("The following deleted files are going to be expunged: \n\n"); |
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| 444 | |
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| 445 | current = get_root_tree(); |
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[2179] | 446 | if (retval = accumulate_names(current, &strings, &num)) { |
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| 447 | error("accumulate_names"); |
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| 448 | return retval; |
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| 449 | } |
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[1704] | 450 | current = get_cwd_tree(); |
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[2179] | 451 | if (retval = accumulate_names(current, &strings, &num)) { |
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| 452 | error("accumulate_names"); |
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| 453 | return retval; |
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| 454 | } |
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| 455 | if (retval = column_array(strings, num, DEF_SCR_WIDTH, 0, 0, 2, 1, 0, |
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| 456 | 1, stdout)) { |
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| 457 | error("column_array"); |
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| 458 | return retval; |
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| 459 | } |
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| 460 | |
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[1704] | 461 | printf("\n"); |
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| 462 | return(0); |
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| 463 | } |
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| 464 | |
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| 465 | |
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| 466 | |
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| 467 | |
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| 468 | |
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[2179] | 469 | int get_the_files(base, reg_exp, num_found, found) |
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[1704] | 470 | char *base, *reg_exp; |
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| 471 | int *num_found; |
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[2179] | 472 | char ***found; |
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[1704] | 473 | { |
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| 474 | char **matches; |
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| 475 | int num_matches; |
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| 476 | int num; |
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| 477 | int i; |
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[2179] | 478 | int retval; |
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[1704] | 479 | |
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[2179] | 480 | *found = (char **) malloc(0); |
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[1704] | 481 | num = 0; |
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| 482 | |
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[2179] | 483 | if (retval = find_matches(base, reg_exp, &num_matches, &matches)) { |
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| 484 | error("find_matches"); |
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| 485 | return retval; |
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| 486 | } |
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| 487 | |
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[1704] | 488 | if (recursive) { |
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| 489 | char **recurs_found; |
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| 490 | int recurs_num; |
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| 491 | |
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| 492 | for (i = 0; i < num_matches; free(matches[i]), i++) { |
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| 493 | if (is_deleted(lastpart(matches[i]))) { |
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[2179] | 494 | if (retval = add_str(found, num, matches[i])) { |
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| 495 | error("add_str"); |
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| 496 | return retval; |
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| 497 | } |
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[1704] | 498 | num++; |
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| 499 | } |
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[2179] | 500 | if (retval = find_deleted_recurses(matches[i], &recurs_num, |
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| 501 | &recurs_found)) { |
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| 502 | error("find_deleted_recurses"); |
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| 503 | return retval; |
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| 504 | } |
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| 505 | if (retval = add_arrays(found, &num, &recurs_found, |
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| 506 | &recurs_num)) { |
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| 507 | error("add_arrays"); |
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| 508 | return retval; |
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| 509 | } |
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[1704] | 510 | } |
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| 511 | } |
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| 512 | else { |
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| 513 | struct stat stat_buf; |
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| 514 | char **contents_found; |
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| 515 | int num_contents; |
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| 516 | |
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| 517 | for (i = 0; i < num_matches; free(matches[i]), i++) { |
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| 518 | if (is_deleted(lastpart(matches[i]))) { |
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[2179] | 519 | if (retval = add_str(found, num, matches[i])) { |
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| 520 | error("add_str"); |
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| 521 | return retval; |
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| 522 | } |
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[1704] | 523 | num++; |
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| 524 | } |
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| 525 | if (lstat(matches[i], &stat_buf)) |
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| 526 | continue; |
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[1712] | 527 | if ((stat_buf.st_mode & S_IFMT) == S_IFDIR) { |
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[2179] | 528 | if (retval = |
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| 529 | find_deleted_contents_recurs(matches[i], &num_contents, |
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| 530 | &contents_found)) { |
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| 531 | error("find_deleted_contents_recurs"); |
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| 532 | return retval; |
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| 533 | } |
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| 534 | if (retval = add_arrays(found, &num, &contents_found, |
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| 535 | &num_contents)) { |
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| 536 | error("add_arrays"); |
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| 537 | return retval; |
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| 538 | } |
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[1704] | 539 | } |
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| 540 | } |
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| 541 | } |
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[2179] | 542 | free((char *) matches); |
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[1704] | 543 | *num_found = num; |
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[2179] | 544 | return 0; |
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[1704] | 545 | } |
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