[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 | #include <stdio.h> |
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| 13 | #include <sys/types.h> |
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| 14 | #include <sys/time.h> |
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[5049] | 15 | #include <dirent.h> |
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[1704] | 16 | #include <sys/param.h> |
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[3049] | 17 | #include <string.h> |
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[2179] | 18 | #include <com_err.h> |
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| 19 | #include <errno.h> |
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[24908] | 20 | #include <unistd.h> |
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[1732] | 21 | #include "col.h" |
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[4415] | 22 | #include "directories.h" |
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[1704] | 23 | #include "pattern.h" |
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| 24 | #include "expunge.h" |
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[2179] | 25 | #include "shell_regexp.h" |
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[4505] | 26 | #include "mit-copying.h" |
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[2179] | 27 | #include "delete_errs.h" |
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| 28 | #include "errors.h" |
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[24908] | 29 | #include "util.h" |
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[1704] | 30 | |
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[24908] | 31 | static void usage(void); |
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| 32 | static int purge(void), expunge(char **files, int num); |
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| 33 | static int process_files(char **files, int num), list_files(void); |
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| 34 | static int top_level(void), expunge_specified(filerec *leaf); |
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| 35 | static int really_do_expunge(filerec *file_ent); |
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| 36 | |
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[2221] | 37 | extern time_t current_time; |
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[1704] | 38 | |
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[12144] | 39 | extern char *whoami; |
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[1704] | 40 | |
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[2221] | 41 | time_t timev; /* minimum mod time before undeletion */ |
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| 42 | |
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| 43 | int interactive, /* query before each expunge */ |
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[1704] | 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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[2221] | 49 | yield, /* print yield of expunge at end */ |
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| 50 | f_links, /* follow symbolic links */ |
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| 51 | f_mounts; /* follow mount points */ |
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[1704] | 52 | |
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[4633] | 53 | int space_removed = 0; |
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[1704] | 54 | |
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| 55 | |
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| 56 | |
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| 57 | |
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[24908] | 58 | int main(int argc, char *argv[]) |
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[1704] | 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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[23271] | 64 | #if defined(__APPLE__) && defined(__MACH__) |
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| 65 | add_error_table(&et_del_error_table); |
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| 66 | #else |
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[2179] | 67 | initialize_del_error_table(); |
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[23271] | 68 | #endif |
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[2179] | 69 | |
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[1704] | 70 | whoami = lastpart(argv[0]); |
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| 71 | if (*whoami == 'p') { /* we're doing a purge */ |
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[2519] | 72 | if (argc > 1) { |
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| 73 | set_error(PURGE_TOO_MANY_ARGS); |
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| 74 | error(""); |
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| 75 | exit(1); |
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| 76 | } |
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[2179] | 77 | if (purge()) |
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| 78 | error("purge"); |
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| 79 | exit(error_occurred ? 1 : 0); |
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[1704] | 80 | } |
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[1732] | 81 | timev = 0; |
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| 82 | yield = interactive = recursive = noop = verbose = listfiles = force = 0; |
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[2221] | 83 | while ((arg = getopt(argc, argv, "t:irfnvlysm")) != EOF) { |
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[1704] | 84 | switch (arg) { |
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| 85 | case 't': |
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[1732] | 86 | timev = atoi(optarg); |
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[1704] | 87 | break; |
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| 88 | case 'i': |
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| 89 | interactive++; |
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| 90 | break; |
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| 91 | case 'r': |
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| 92 | recursive++; |
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| 93 | break; |
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| 94 | case 'f': |
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| 95 | force++; |
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| 96 | break; |
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| 97 | case 'n': |
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| 98 | noop++; |
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| 99 | break; |
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| 100 | case 'v': |
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| 101 | verbose++; |
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| 102 | break; |
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| 103 | case 'l': |
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| 104 | listfiles++; |
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| 105 | break; |
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[1732] | 106 | case 'y': |
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| 107 | yield++; |
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| 108 | break; |
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[2221] | 109 | case 's': |
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| 110 | f_links++; |
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| 111 | break; |
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| 112 | case 'm': |
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| 113 | f_mounts++; |
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| 114 | break; |
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[1704] | 115 | default: |
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| 116 | usage(); |
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| 117 | exit(1); |
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| 118 | } |
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| 119 | } |
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[2221] | 120 | report_errors = ! force; |
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| 121 | |
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[1704] | 122 | if (optind == argc) { |
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| 123 | char *dir; |
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[2179] | 124 | dir = "."; /* current working directory */ |
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| 125 | if (expunge(&dir, 1)) |
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| 126 | error("expunging ."); |
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[1704] | 127 | } |
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[2179] | 128 | else if (expunge(&argv[optind], argc - optind)) |
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| 129 | error("expunge"); |
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| 130 | |
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| 131 | exit((error_occurred && (! force)) ? 1 : 0); |
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[1704] | 132 | } |
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| 133 | |
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| 134 | |
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| 135 | |
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| 136 | |
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| 137 | |
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[24908] | 138 | static int purge() |
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[1704] | 139 | { |
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[2179] | 140 | char *home; |
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| 141 | int retval; |
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| 142 | |
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[2367] | 143 | home = Malloc((unsigned) MAXPATHLEN); |
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[2179] | 144 | if (! home) { |
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| 145 | set_error(errno); |
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| 146 | error("purge"); |
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| 147 | return error_code; |
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[1704] | 148 | } |
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[1732] | 149 | timev = interactive = noop = verbose = force = 0; |
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| 150 | yield = listfiles = recursive = 1; |
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[24908] | 151 | if ((retval = get_home(home))) { |
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[2179] | 152 | error("purge"); |
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| 153 | return retval; |
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[1704] | 154 | } |
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| 155 | |
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| 156 | printf("Please be patient.... this may take a while.\n\n"); |
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[2179] | 157 | |
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[24908] | 158 | if ((retval = expunge(&home, 1))) { |
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[2179] | 159 | error("expunge"); |
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| 160 | return retval; |
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| 161 | } |
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[2221] | 162 | return 0; |
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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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[24908] | 168 | static void usage() |
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[1704] | 169 | { |
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[2221] | 170 | fprintf(stderr, "Usage: %s [ options ] [ filename [ ... ]]\n", whoami); |
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| 171 | fprintf(stderr, "Options are:\n"); |
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| 172 | fprintf(stderr, " -r recursive\n"); |
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| 173 | fprintf(stderr, " -i interactive\n"); |
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| 174 | fprintf(stderr, " -f force\n"); |
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| 175 | fprintf(stderr, " -t n n-day-or-older expunge\n"); |
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| 176 | fprintf(stderr, " -n noop\n"); |
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| 177 | fprintf(stderr, " -v verbose\n"); |
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| 178 | fprintf(stderr, " -l list files before expunging\n"); |
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| 179 | fprintf(stderr, " -s follow symbolic links to directories\n"); |
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| 180 | fprintf(stderr, " -m follow mount points\n"); |
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| 181 | fprintf(stderr, " -y print yield of expunge\n"); |
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| 182 | fprintf(stderr, " -- end options and start filenames\n"); |
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[1704] | 183 | } |
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| 184 | |
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| 185 | |
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| 186 | |
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| 187 | |
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| 188 | |
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[24908] | 189 | static int expunge(char **files, int num) |
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[1704] | 190 | { |
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| 191 | char **found_files; |
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| 192 | int num_found; |
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| 193 | int status = 0; |
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| 194 | int total = 0; |
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| 195 | filerec *current; |
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[2179] | 196 | int retval; |
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[1704] | 197 | |
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| 198 | if (initialize_tree()) |
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| 199 | exit(1); |
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| 200 | |
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| 201 | for ( ; num ; num--) { |
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[2221] | 202 | retval = get_the_files(files[num - 1], &num_found, &found_files); |
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[2179] | 203 | if (retval) { |
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| 204 | error(files[num - 1]); |
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| 205 | return retval; |
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| 206 | } |
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| 207 | |
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| 208 | if (num_found) { |
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[1732] | 209 | num_found = process_files(found_files, num_found); |
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[2179] | 210 | if (num_found < 0) { |
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| 211 | error("process_files"); |
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| 212 | return error_code; |
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| 213 | } |
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| 214 | } |
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| 215 | |
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[1732] | 216 | total += num_found; |
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| 217 | if (! num_found) if (! force) { |
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[1753] | 218 | /* |
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| 219 | * There are three different situations here. Eiter we |
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| 220 | * are dealing with an existing directory with no |
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| 221 | * deleted files in it, or we are deleting with a |
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| 222 | * non-existing deleted file with wildcards, or we are |
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| 223 | * dealing with a non-existing deleted file without |
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| 224 | * wildcards. In the former case we print nothing, and |
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| 225 | * in the latter cases we print either "no match" or |
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| 226 | * "not found" respectively |
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| 227 | */ |
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[2221] | 228 | if (no_wildcards(files[num - 1])) { |
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[1753] | 229 | if (! directory_exists(files[num - 1])) { |
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[2179] | 230 | set_error(ENOENT); |
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| 231 | error(files[num - 1]); |
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[1753] | 232 | } |
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| 233 | } |
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| 234 | else { |
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[23660] | 235 | set_error(DELETE_ENOMATCH); |
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[2179] | 236 | error(files[num - 1]); |
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[1753] | 237 | } |
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[1704] | 238 | } |
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| 239 | } |
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| 240 | if (total && listfiles) { |
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[24908] | 241 | if ((retval = list_files())) { |
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| 242 | error("list_files"); |
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| 243 | return retval; |
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| 244 | } |
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| 245 | if (! (force || top_level())) { |
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| 246 | set_status(EXPUNGE_NOT_EXPUNGED); |
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| 247 | return error_code; |
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| 248 | } |
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[1704] | 249 | } |
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[1732] | 250 | current = get_root_tree(); |
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[2179] | 251 | if (current) { |
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[24908] | 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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[2179] | 256 | } |
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[1732] | 257 | current = get_cwd_tree(); |
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[2179] | 258 | if (current) { |
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[24908] | 259 | if ((retval = expunge_specified(current))) { |
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| 260 | error("expunge_specified"); |
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| 261 | status = retval; |
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| 262 | } |
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[2179] | 263 | } |
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[1732] | 264 | if (yield) { |
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[23661] | 265 | char *friendly = space_to_friendly(space_removed); |
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| 266 | if (noop) |
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| 267 | printf("Total that would be expunged: %s\n", friendly); |
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| 268 | else |
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| 269 | printf("Total expunged: %s\n", friendly); |
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| 270 | free(friendly); |
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[1732] | 271 | } |
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[2179] | 272 | return status; |
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[1704] | 273 | } |
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| 274 | |
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| 275 | |
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| 276 | |
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[24908] | 277 | static int expunge_specified(filerec *leaf) |
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[1732] | 278 | { |
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| 279 | int status = 0; |
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[2179] | 280 | int do_it = 1; |
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| 281 | int retval; |
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| 282 | |
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| 283 | if ((leaf->specified) && ((leaf->specs.st_mode & S_IFMT) == S_IFDIR)) { |
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[6420] | 284 | /* |
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| 285 | * This is static so that we don't create a copy of it for |
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| 286 | * every recursive invocation of expunge_specified. |
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| 287 | */ |
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| 288 | static char buf[MAXPATHLEN]; |
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[1704] | 289 | |
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[24908] | 290 | if ((retval = get_leaf_path(leaf, buf))) { |
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[2179] | 291 | error("get_leaf_path"); |
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| 292 | return retval; |
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| 293 | } |
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[2221] | 294 | (void) convert_to_user_name(buf, buf); |
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[2179] | 295 | |
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| 296 | if (interactive) { |
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| 297 | printf("%s: Expunge directory %s? ", whoami, buf); |
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| 298 | status = (! (do_it = yes())); |
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| 299 | } |
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[1850] | 300 | } |
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[2179] | 301 | if (do_it) { |
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| 302 | if (leaf->dirs) { |
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[24908] | 303 | if ((retval = expunge_specified(leaf->dirs))) { |
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| 304 | error("expunge_specified"); |
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| 305 | status = retval; |
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| 306 | } |
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[2179] | 307 | } |
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| 308 | if (leaf->files) { |
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[24908] | 309 | if ((retval = expunge_specified(leaf->files))) { |
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| 310 | error("expunge_specified"); |
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| 311 | status = retval; |
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| 312 | } |
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[2179] | 313 | } |
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[1732] | 314 | } |
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[2179] | 315 | if (leaf->specified && (! status)) { |
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[24908] | 316 | if ((retval = really_do_expunge(leaf))) { |
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| 317 | error("really_do_expunge"); |
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| 318 | status = retval; |
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| 319 | } |
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[2179] | 320 | } |
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| 321 | if (leaf->next) { |
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[24908] | 322 | if ((retval = expunge_specified(leaf->next))) { |
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| 323 | error("expunge_specified"); |
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| 324 | status = retval; |
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| 325 | } |
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[2179] | 326 | } |
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| 327 | |
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[1732] | 328 | free_leaf(leaf); |
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[2179] | 329 | return status; |
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[1732] | 330 | } |
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[1704] | 331 | |
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[1732] | 332 | |
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[24908] | 333 | static int process_files(char **files, int num) |
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[1704] | 334 | { |
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[1831] | 335 | int i, skipped = 0; |
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[1732] | 336 | filerec *leaf; |
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| 337 | |
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[1704] | 338 | for (i = 0; i < num; i++) { |
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[2179] | 339 | if (add_path_to_tree(files[i], &leaf)) { |
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| 340 | error("add_path_to_tree"); |
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| 341 | return -1; |
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[1704] | 342 | } |
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[1732] | 343 | free(files[i]); |
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| 344 | if (! timed_out(leaf, current_time, timev)) { |
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| 345 | free_leaf(leaf); |
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[1831] | 346 | skipped++; |
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[1704] | 347 | } |
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| 348 | } |
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[2179] | 349 | free((char *) files); |
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[1831] | 350 | return(num-skipped); |
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[1704] | 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 | |
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[24908] | 361 | static int really_do_expunge(filerec *file_ent) |
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[1704] | 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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[24908] | 367 | if ((retval = get_leaf_path(file_ent, real))) { |
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[2179] | 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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[23661] | 374 | char *friendly = specs_to_friendly(file_ent->specs); |
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| 375 | printf ("%s: Expunge %s (%s)? ", whoami, user, friendly); |
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| 376 | free(friendly); |
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[2179] | 377 | if (! yes()) { |
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| 378 | set_status(EXPUNGE_NOT_EXPUNGED); |
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| 379 | return error_code; |
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| 380 | } |
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[1704] | 381 | } |
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| 382 | |
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| 383 | if (noop) { |
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[4633] | 384 | space_removed += specs_to_space(file_ent->specs); |
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[23661] | 385 | char *friendly = space_to_friendly(space_removed); |
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| 386 | char *friendly2 = specs_to_friendly(file_ent->specs); |
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| 387 | printf("%s: %s (%s) would be expunged (%s total)\n", whoami, user, |
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| 388 | friendly2, friendly); |
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| 389 | free(friendly); |
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| 390 | free(friendly2); |
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[2179] | 391 | return 0; |
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[1704] | 392 | } |
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| 393 | |
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[1732] | 394 | if ((file_ent->specs.st_mode & S_IFMT) == S_IFDIR) |
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[1704] | 395 | status = rmdir(real); |
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| 396 | else |
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| 397 | status = unlink(real); |
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| 398 | if (! status) { |
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[4633] | 399 | space_removed += specs_to_space(file_ent->specs); |
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[23661] | 400 | if (verbose) { |
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| 401 | char *friendly = space_to_friendly(space_removed); |
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| 402 | char *friendly2 = specs_to_friendly(file_ent->specs); |
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| 403 | printf("%s: %s (%s) expunged (%s total)\n", whoami, user, |
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| 404 | friendly2, friendly); |
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| 405 | free(friendly); |
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| 406 | free(friendly2); |
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| 407 | } |
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[2179] | 408 | return 0; |
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[1704] | 409 | } |
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| 410 | else { |
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[2179] | 411 | set_error(errno); |
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| 412 | error(real); |
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| 413 | return error_code; |
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[1704] | 414 | } |
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| 415 | } |
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| 416 | |
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| 417 | |
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| 418 | |
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| 419 | |
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| 420 | |
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| 421 | |
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| 422 | |
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| 423 | |
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| 424 | |
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[24908] | 425 | static int top_level() |
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[1704] | 426 | { |
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| 427 | if (interactive) { |
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| 428 | printf("The above files, which have been marked for deletion, are about to be\n"); |
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| 429 | printf("expunged forever! You will be asked for confirmation before each file is\n"); |
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[1757] | 430 | printf("deleted. Do you wish to continue [return = no]? "); |
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[1704] | 431 | } |
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| 432 | else { |
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| 433 | printf("The above files, which have been marked for deletion, are about to be\n"); |
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| 434 | printf("expunged forever! Make sure you don't need any of them before continuing.\n"); |
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[1757] | 435 | printf("Do you wish to continue [return = no]? "); |
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[1704] | 436 | } |
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| 437 | return (yes()); |
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| 438 | } |
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| 439 | |
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[1732] | 440 | |
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| 441 | |
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| 442 | |
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| 443 | |
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[24908] | 444 | static int list_files() |
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[1704] | 445 | { |
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| 446 | filerec *current; |
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[1732] | 447 | char **strings; |
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| 448 | int num; |
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[2179] | 449 | int retval; |
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[1704] | 450 | |
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[2367] | 451 | strings = (char **) Malloc(sizeof(char *)); |
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[1732] | 452 | num = 0; |
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| 453 | if (! strings) { |
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[2179] | 454 | set_error(errno); |
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[2367] | 455 | error("Malloc"); |
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[2179] | 456 | return error_code; |
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[1732] | 457 | } |
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[2179] | 458 | |
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[1704] | 459 | printf("The following deleted files are going to be expunged: \n\n"); |
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| 460 | |
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| 461 | current = get_root_tree(); |
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[24908] | 462 | if ((retval = accumulate_names(current, &strings, &num))) { |
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[2179] | 463 | error("accumulate_names"); |
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| 464 | return retval; |
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| 465 | } |
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[1704] | 466 | current = get_cwd_tree(); |
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[24908] | 467 | if ((retval = accumulate_names(current, &strings, &num))) { |
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[2179] | 468 | error("accumulate_names"); |
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| 469 | return retval; |
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| 470 | } |
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[24908] | 471 | if ((retval = column_array(strings, num, DEF_SCR_WIDTH, 0, 0, 2, 1, 0, |
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| 472 | 1, stdout))) { |
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[2179] | 473 | error("column_array"); |
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| 474 | return retval; |
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| 475 | } |
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| 476 | |
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[1704] | 477 | printf("\n"); |
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| 478 | return(0); |
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| 479 | } |
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| 480 | |
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| 481 | |
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| 482 | |
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| 483 | |
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| 484 | |
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[2221] | 485 | int get_the_files(name, num_found, found) |
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| 486 | char *name; |
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[1704] | 487 | int *num_found; |
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[2179] | 488 | char ***found; |
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[1704] | 489 | { |
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[2179] | 490 | int retval; |
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[2221] | 491 | int options; |
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[1704] | 492 | |
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[2221] | 493 | options = FIND_DELETED | FIND_CONTENTS | RECURS_DELETED; |
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| 494 | if (recursive) |
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| 495 | options |= RECURS_FIND_DELETED; |
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| 496 | if (f_mounts) |
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| 497 | options |= FOLLW_MOUNTPOINTS; |
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| 498 | if (f_links) |
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| 499 | options |= FOLLW_LINKS; |
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[1704] | 500 | |
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[2221] | 501 | retval = find_matches(name, num_found, found, options); |
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| 502 | if (retval) { |
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[2179] | 503 | error("find_matches"); |
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| 504 | return retval; |
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| 505 | } |
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[2221] | 506 | |
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[2179] | 507 | return 0; |
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[1704] | 508 | } |
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