[1704] | 1 | /* |
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[12350] | 2 | * $Id: expunge.c,v 1.25 1999-01-22 23:08:59 ghudson Exp $ |
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[1704] | 3 | * |
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| 4 | * This program is part of a package including delete, undelete, |
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| 5 | * lsdel, expunge and purge. The software suite is meant as a |
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| 6 | * replacement for rm which allows for file recovery. |
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| 7 | * |
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| 8 | * Copyright (c) 1989 by the Massachusetts Institute of Technology. |
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[4505] | 9 | * For copying and distribution information, see the file "mit-copying.h." |
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[1704] | 10 | */ |
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| 11 | |
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| 12 | #if (!defined(lint) && !defined(SABER)) |
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[12350] | 13 | static char rcsid_expunge_c[] = "$Id: expunge.c,v 1.25 1999-01-22 23:08:59 ghudson Exp $"; |
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[1704] | 14 | #endif |
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| 15 | |
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| 16 | #include <stdio.h> |
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| 17 | #include <sys/types.h> |
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| 18 | #include <sys/time.h> |
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[5049] | 19 | #include <dirent.h> |
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[1704] | 20 | #include <sys/param.h> |
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[3049] | 21 | #include <string.h> |
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[2179] | 22 | #include <com_err.h> |
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| 23 | #include <errno.h> |
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[1732] | 24 | #include "col.h" |
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[1704] | 25 | #include "util.h" |
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[4415] | 26 | #include "directories.h" |
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[1704] | 27 | #include "pattern.h" |
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| 28 | #include "expunge.h" |
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[2179] | 29 | #include "shell_regexp.h" |
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[4505] | 30 | #include "mit-copying.h" |
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[2179] | 31 | #include "delete_errs.h" |
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| 32 | #include "errors.h" |
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[1704] | 33 | |
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[2221] | 34 | extern time_t current_time; |
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[1704] | 35 | |
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[12144] | 36 | extern char *whoami; |
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[1704] | 37 | |
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[2221] | 38 | time_t timev; /* minimum mod time before undeletion */ |
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| 39 | |
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| 40 | int interactive, /* query before each expunge */ |
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[1704] | 41 | recursive, /* expunge undeleted directories recursively */ |
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| 42 | noop, /* print what would be done instead of doing it */ |
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| 43 | verbose, /* print a line as each file is deleted */ |
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| 44 | force, /* do not ask for any confirmation */ |
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[1732] | 45 | listfiles, /* list files at toplevel */ |
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[2221] | 46 | yield, /* print yield of expunge at end */ |
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| 47 | f_links, /* follow symbolic links */ |
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| 48 | f_mounts; /* follow mount points */ |
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[1704] | 49 | |
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[4633] | 50 | int space_removed = 0; |
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[1704] | 51 | |
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| 52 | |
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| 53 | |
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| 54 | |
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| 55 | main(argc, argv) |
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| 56 | int argc; |
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| 57 | char *argv[]; |
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| 58 | { |
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| 59 | extern char *optarg; |
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| 60 | extern int optind; |
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| 61 | int arg; |
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| 62 | |
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[2179] | 63 | initialize_del_error_table(); |
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| 64 | |
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[1704] | 65 | whoami = lastpart(argv[0]); |
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| 66 | if (*whoami == 'p') { /* we're doing a purge */ |
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[2519] | 67 | if (argc > 1) { |
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| 68 | set_error(PURGE_TOO_MANY_ARGS); |
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| 69 | error(""); |
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| 70 | exit(1); |
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| 71 | } |
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[2179] | 72 | if (purge()) |
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| 73 | error("purge"); |
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| 74 | exit(error_occurred ? 1 : 0); |
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[1704] | 75 | } |
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[1732] | 76 | timev = 0; |
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| 77 | yield = interactive = recursive = noop = verbose = listfiles = force = 0; |
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[2221] | 78 | while ((arg = getopt(argc, argv, "t:irfnvlysm")) != EOF) { |
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[1704] | 79 | switch (arg) { |
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| 80 | case 't': |
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[1732] | 81 | timev = atoi(optarg); |
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[1704] | 82 | break; |
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| 83 | case 'i': |
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| 84 | interactive++; |
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| 85 | break; |
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| 86 | case 'r': |
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| 87 | recursive++; |
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| 88 | break; |
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| 89 | case 'f': |
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| 90 | force++; |
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| 91 | break; |
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| 92 | case 'n': |
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| 93 | noop++; |
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| 94 | break; |
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| 95 | case 'v': |
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| 96 | verbose++; |
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| 97 | break; |
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| 98 | case 'l': |
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| 99 | listfiles++; |
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| 100 | break; |
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[1732] | 101 | case 'y': |
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| 102 | yield++; |
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| 103 | break; |
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[2221] | 104 | case 's': |
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| 105 | f_links++; |
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| 106 | break; |
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| 107 | case 'm': |
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| 108 | f_mounts++; |
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| 109 | break; |
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[1704] | 110 | default: |
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| 111 | usage(); |
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| 112 | exit(1); |
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| 113 | } |
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| 114 | } |
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[2221] | 115 | report_errors = ! force; |
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| 116 | |
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[1704] | 117 | if (optind == argc) { |
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| 118 | char *dir; |
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[2179] | 119 | dir = "."; /* current working directory */ |
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| 120 | if (expunge(&dir, 1)) |
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| 121 | error("expunging ."); |
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[1704] | 122 | } |
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[2179] | 123 | else if (expunge(&argv[optind], argc - optind)) |
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| 124 | error("expunge"); |
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| 125 | |
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| 126 | exit((error_occurred && (! force)) ? 1 : 0); |
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[1704] | 127 | } |
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| 128 | |
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| 129 | |
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| 130 | |
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| 131 | |
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| 132 | |
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| 133 | purge() |
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| 134 | { |
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[2179] | 135 | char *home; |
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| 136 | int retval; |
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| 137 | |
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[2367] | 138 | home = Malloc((unsigned) MAXPATHLEN); |
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[2179] | 139 | if (! home) { |
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| 140 | set_error(errno); |
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| 141 | error("purge"); |
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| 142 | return error_code; |
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[1704] | 143 | } |
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[1732] | 144 | timev = interactive = noop = verbose = force = 0; |
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| 145 | yield = listfiles = recursive = 1; |
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[2179] | 146 | if (retval = get_home(home)) { |
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| 147 | error("purge"); |
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| 148 | return retval; |
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[1704] | 149 | } |
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| 150 | |
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| 151 | printf("Please be patient.... this may take a while.\n\n"); |
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[2179] | 152 | |
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| 153 | if (retval = expunge(&home, 1)) { |
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| 154 | error("expunge"); |
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| 155 | return retval; |
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| 156 | } |
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[2221] | 157 | return 0; |
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[1704] | 158 | } |
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| 159 | |
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| 160 | |
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| 161 | |
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| 162 | |
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| 163 | usage() |
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| 164 | { |
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[2221] | 165 | fprintf(stderr, "Usage: %s [ options ] [ filename [ ... ]]\n", whoami); |
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| 166 | fprintf(stderr, "Options are:\n"); |
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| 167 | fprintf(stderr, " -r recursive\n"); |
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| 168 | fprintf(stderr, " -i interactive\n"); |
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| 169 | fprintf(stderr, " -f force\n"); |
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| 170 | fprintf(stderr, " -t n n-day-or-older expunge\n"); |
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| 171 | fprintf(stderr, " -n noop\n"); |
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| 172 | fprintf(stderr, " -v verbose\n"); |
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| 173 | fprintf(stderr, " -l list files before expunging\n"); |
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| 174 | fprintf(stderr, " -s follow symbolic links to directories\n"); |
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| 175 | fprintf(stderr, " -m follow mount points\n"); |
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| 176 | fprintf(stderr, " -y print yield of expunge\n"); |
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| 177 | fprintf(stderr, " -- end options and start filenames\n"); |
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[1704] | 178 | } |
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| 179 | |
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| 180 | |
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| 181 | |
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| 182 | |
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| 183 | |
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[2179] | 184 | int expunge(files, num) |
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[1704] | 185 | char **files; |
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| 186 | int num; |
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| 187 | { |
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| 188 | char **found_files; |
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| 189 | int num_found; |
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| 190 | int status = 0; |
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| 191 | int total = 0; |
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| 192 | filerec *current; |
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[2179] | 193 | int retval; |
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[1704] | 194 | |
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| 195 | if (initialize_tree()) |
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| 196 | exit(1); |
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| 197 | |
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| 198 | for ( ; num ; num--) { |
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[2221] | 199 | retval = get_the_files(files[num - 1], &num_found, &found_files); |
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[2179] | 200 | if (retval) { |
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| 201 | error(files[num - 1]); |
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| 202 | return retval; |
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| 203 | } |
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| 204 | |
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| 205 | if (num_found) { |
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[1732] | 206 | num_found = process_files(found_files, num_found); |
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[2179] | 207 | if (num_found < 0) { |
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| 208 | error("process_files"); |
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| 209 | return error_code; |
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| 210 | } |
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| 211 | } |
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| 212 | |
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[1732] | 213 | total += num_found; |
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| 214 | if (! num_found) if (! force) { |
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[1753] | 215 | /* |
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| 216 | * There are three different situations here. Eiter we |
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| 217 | * are dealing with an existing directory with no |
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| 218 | * deleted files in it, or we are deleting with a |
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| 219 | * non-existing deleted file with wildcards, or we are |
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| 220 | * dealing with a non-existing deleted file without |
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| 221 | * wildcards. In the former case we print nothing, and |
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| 222 | * in the latter cases we print either "no match" or |
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| 223 | * "not found" respectively |
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| 224 | */ |
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[2221] | 225 | if (no_wildcards(files[num - 1])) { |
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[1753] | 226 | if (! directory_exists(files[num - 1])) { |
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[2179] | 227 | set_error(ENOENT); |
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| 228 | error(files[num - 1]); |
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[1753] | 229 | } |
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| 230 | } |
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| 231 | else { |
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[2179] | 232 | set_error(ENOMATCH); |
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| 233 | error(files[num - 1]); |
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[1753] | 234 | } |
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[1704] | 235 | } |
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| 236 | } |
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| 237 | if (total && listfiles) { |
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[2179] | 238 | if (retval = list_files()) { |
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| 239 | error("list_files"); |
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| 240 | return retval; |
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| 241 | } |
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| 242 | if (! force) if (! top_level()) { |
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| 243 | set_status(EXPUNGE_NOT_EXPUNGED); |
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| 244 | return error_code; |
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| 245 | } |
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[1704] | 246 | } |
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[1732] | 247 | current = get_root_tree(); |
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[2179] | 248 | if (current) { |
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| 249 | if (retval = expunge_specified(current)) { |
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| 250 | error("expunge_specified"); |
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| 251 | status = retval; |
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| 252 | } |
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| 253 | } |
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[1732] | 254 | current = get_cwd_tree(); |
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[2179] | 255 | if (current) { |
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| 256 | if (retval = expunge_specified(current)) { |
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| 257 | error("expunge_specified"); |
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| 258 | status = retval; |
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| 259 | } |
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| 260 | } |
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[1732] | 261 | if (yield) { |
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| 262 | if (noop) |
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| 263 | printf("Total that would be expunged: %dk\n", |
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[4633] | 264 | space_to_k(space_removed)); |
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[1732] | 265 | else |
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[4633] | 266 | printf("Total expunged: %dk\n", space_to_k(space_removed)); |
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[1732] | 267 | } |
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[2179] | 268 | return status; |
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[1704] | 269 | } |
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| 270 | |
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| 271 | |
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| 272 | |
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[1732] | 273 | expunge_specified(leaf) |
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| 274 | filerec *leaf; |
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| 275 | { |
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| 276 | int status = 0; |
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[2179] | 277 | int do_it = 1; |
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| 278 | int retval; |
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| 279 | |
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| 280 | if ((leaf->specified) && ((leaf->specs.st_mode & S_IFMT) == S_IFDIR)) { |
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[6420] | 281 | /* |
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| 282 | * This is static so that we don't create a copy of it for |
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| 283 | * every recursive invocation of expunge_specified. |
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| 284 | */ |
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| 285 | static char buf[MAXPATHLEN]; |
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[1704] | 286 | |
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[2179] | 287 | if (retval = get_leaf_path(leaf, buf)) { |
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| 288 | error("get_leaf_path"); |
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| 289 | return retval; |
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| 290 | } |
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[2221] | 291 | (void) convert_to_user_name(buf, buf); |
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[2179] | 292 | |
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| 293 | if (interactive) { |
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| 294 | printf("%s: Expunge directory %s? ", whoami, buf); |
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| 295 | status = (! (do_it = yes())); |
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| 296 | } |
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[1850] | 297 | } |
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[2179] | 298 | if (do_it) { |
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| 299 | if (leaf->dirs) { |
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| 300 | if (retval = expunge_specified(leaf->dirs)) { |
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| 301 | error("expunge_specified"); |
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| 302 | status = retval; |
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| 303 | } |
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| 304 | } |
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| 305 | if (leaf->files) { |
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| 306 | if (retval = expunge_specified(leaf->files)) { |
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| 307 | error("expunge_specified"); |
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| 308 | status = retval; |
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| 309 | } |
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| 310 | } |
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[1732] | 311 | } |
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[2179] | 312 | if (leaf->specified && (! status)) { |
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| 313 | if (retval = really_do_expunge(leaf)) { |
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| 314 | error("really_do_expunge"); |
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| 315 | status = retval; |
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| 316 | } |
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| 317 | } |
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| 318 | if (leaf->next) { |
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| 319 | if (retval = expunge_specified(leaf->next)) { |
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| 320 | error("expunge_specified"); |
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| 321 | status = retval; |
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| 322 | } |
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| 323 | } |
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| 324 | |
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[1732] | 325 | free_leaf(leaf); |
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[2179] | 326 | return status; |
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[1732] | 327 | } |
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[1704] | 328 | |
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[1732] | 329 | |
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[1704] | 330 | process_files(files, num) |
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| 331 | char **files; |
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| 332 | int num; |
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| 333 | { |
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[1831] | 334 | int i, skipped = 0; |
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[1732] | 335 | filerec *leaf; |
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| 336 | |
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[1704] | 337 | for (i = 0; i < num; i++) { |
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[2179] | 338 | if (add_path_to_tree(files[i], &leaf)) { |
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| 339 | error("add_path_to_tree"); |
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| 340 | return -1; |
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[1704] | 341 | } |
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[1732] | 342 | free(files[i]); |
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| 343 | if (! timed_out(leaf, current_time, timev)) { |
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| 344 | free_leaf(leaf); |
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[1831] | 345 | skipped++; |
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[1704] | 346 | } |
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| 347 | } |
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[2179] | 348 | free((char *) files); |
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[1831] | 349 | return(num-skipped); |
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[1704] | 350 | } |
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| 351 | |
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| 352 | |
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| 353 | |
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| 354 | |
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| 355 | |
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| 356 | |
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| 357 | |
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| 358 | |
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| 359 | |
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| 360 | really_do_expunge(file_ent) |
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| 361 | filerec *file_ent; |
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| 362 | { |
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| 363 | char real[MAXPATHLEN], user[MAXPATHLEN]; |
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| 364 | int status; |
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[2179] | 365 | int retval; |
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[1704] | 366 | |
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[2179] | 367 | if (retval = get_leaf_path(file_ent, real)) { |
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| 368 | error("get_leaf_path"); |
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| 369 | return retval; |
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| 370 | } |
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[2221] | 371 | (void) convert_to_user_name(real, user); |
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[1704] | 372 | |
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| 373 | if (interactive) { |
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[1732] | 374 | printf ("%s: Expunge %s (%dk)? ", whoami, user, |
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[4633] | 375 | specs_to_k(file_ent->specs)); |
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[2179] | 376 | if (! yes()) { |
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| 377 | set_status(EXPUNGE_NOT_EXPUNGED); |
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| 378 | return error_code; |
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| 379 | } |
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[1704] | 380 | } |
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| 381 | |
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| 382 | if (noop) { |
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[4633] | 383 | space_removed += specs_to_space(file_ent->specs); |
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[1732] | 384 | printf("%s: %s (%dk) would be expunged (%dk total)\n", whoami, user, |
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[4633] | 385 | specs_to_k(file_ent->specs), |
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| 386 | space_to_k(space_removed)); |
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[2179] | 387 | return 0; |
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[1704] | 388 | } |
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| 389 | |
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[1732] | 390 | if ((file_ent->specs.st_mode & S_IFMT) == S_IFDIR) |
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[1704] | 391 | status = rmdir(real); |
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| 392 | else |
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| 393 | status = unlink(real); |
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| 394 | if (! status) { |
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[4633] | 395 | space_removed += specs_to_space(file_ent->specs); |
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[1704] | 396 | if (verbose) |
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[1732] | 397 | printf("%s: %s (%dk) expunged (%dk total)\n", whoami, user, |
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[4633] | 398 | specs_to_k(file_ent->specs), |
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| 399 | space_to_k(space_removed)); |
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[2179] | 400 | return 0; |
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[1704] | 401 | } |
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| 402 | else { |
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[2179] | 403 | set_error(errno); |
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| 404 | error(real); |
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| 405 | return error_code; |
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[1704] | 406 | } |
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| 407 | } |
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| 408 | |
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| 409 | |
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| 410 | |
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| 411 | |
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| 412 | |
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| 413 | |
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| 414 | |
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| 415 | |
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| 416 | |
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| 417 | top_level() |
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| 418 | { |
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| 419 | if (interactive) { |
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| 420 | printf("The above files, which have been marked for deletion, are about to be\n"); |
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| 421 | printf("expunged forever! You will be asked for confirmation before each file is\n"); |
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[1757] | 422 | printf("deleted. Do you wish to continue [return = no]? "); |
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[1704] | 423 | } |
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| 424 | else { |
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| 425 | printf("The above files, which have been marked for deletion, are about to be\n"); |
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| 426 | printf("expunged forever! Make sure you don't need any of them before continuing.\n"); |
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[1757] | 427 | printf("Do you wish to continue [return = no]? "); |
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[1704] | 428 | } |
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| 429 | return (yes()); |
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| 430 | } |
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| 431 | |
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[1732] | 432 | |
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| 433 | |
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| 434 | |
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| 435 | |
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[1704] | 436 | list_files() |
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| 437 | { |
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| 438 | filerec *current; |
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[1732] | 439 | char **strings; |
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| 440 | int num; |
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[2179] | 441 | int retval; |
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[1704] | 442 | |
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[2367] | 443 | strings = (char **) Malloc(sizeof(char *)); |
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[1732] | 444 | num = 0; |
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| 445 | if (! strings) { |
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[2179] | 446 | set_error(errno); |
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[2367] | 447 | error("Malloc"); |
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[2179] | 448 | return error_code; |
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[1732] | 449 | } |
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[2179] | 450 | |
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[1704] | 451 | printf("The following deleted files are going to be expunged: \n\n"); |
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| 452 | |
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| 453 | current = get_root_tree(); |
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[2179] | 454 | if (retval = accumulate_names(current, &strings, &num)) { |
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| 455 | error("accumulate_names"); |
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| 456 | return retval; |
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| 457 | } |
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[1704] | 458 | current = get_cwd_tree(); |
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[2179] | 459 | if (retval = accumulate_names(current, &strings, &num)) { |
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| 460 | error("accumulate_names"); |
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| 461 | return retval; |
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| 462 | } |
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| 463 | if (retval = column_array(strings, num, DEF_SCR_WIDTH, 0, 0, 2, 1, 0, |
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| 464 | 1, stdout)) { |
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| 465 | error("column_array"); |
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| 466 | return retval; |
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| 467 | } |
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| 468 | |
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[1704] | 469 | printf("\n"); |
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| 470 | return(0); |
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| 471 | } |
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| 472 | |
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| 473 | |
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| 474 | |
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| 475 | |
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| 476 | |
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[2221] | 477 | int get_the_files(name, num_found, found) |
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| 478 | char *name; |
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[1704] | 479 | int *num_found; |
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[2179] | 480 | char ***found; |
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[1704] | 481 | { |
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[2179] | 482 | int retval; |
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[2221] | 483 | int options; |
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[1704] | 484 | |
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[2221] | 485 | options = FIND_DELETED | FIND_CONTENTS | RECURS_DELETED; |
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| 486 | if (recursive) |
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| 487 | options |= RECURS_FIND_DELETED; |
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| 488 | if (f_mounts) |
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| 489 | options |= FOLLW_MOUNTPOINTS; |
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| 490 | if (f_links) |
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| 491 | options |= FOLLW_LINKS; |
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[1704] | 492 | |
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[2221] | 493 | retval = find_matches(name, num_found, found, options); |
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| 494 | if (retval) { |
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[2179] | 495 | error("find_matches"); |
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| 496 | return retval; |
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| 497 | } |
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[2221] | 498 | |
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[2179] | 499 | return 0; |
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[1704] | 500 | } |
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