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3296 | post | 1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
2 | * All rights reserved. |
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3277 | post | 3 | * |
3296 | post | 4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions are met: |
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6 | * |
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7 | * Redistributions of source code must retain the above copyright notice, this |
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8 | * list of conditions and the following disclaimer. |
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9 | * |
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10 | * Redistributions in binary form must reproduce the above copyright notice, |
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11 | * this list of conditions and the following disclaimer in the documentation |
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12 | * and/or other materials provided with the distribution. |
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13 | * |
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14 | * Neither the name of the original program's authors nor the names of its |
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15 | * contributors may be used to endorse or promote products derived from this |
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16 | * software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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28 | * POSSIBILITY OF SUCH DAMAGE. |
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29 | */ |
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3277 | post | 30 | |
31 | #include <stdio.h> |
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32 | #include <stdlib.h> |
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3296 | post | 33 | #include <unistd.h> |
34 | #include <fcntl.h> |
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35 | #include <dirent.h> |
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36 | #include "config.h" |
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37 | #include "errors.h" |
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38 | #include "util.h" |
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3277 | post | 39 | #include "entry.h" |
40 | #include "rm.h" |
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41 | #include "cmds.h" |
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42 | |||
43 | static char *cmdname = "rm"; |
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44 | |||
3296 | post | 45 | unsigned int rm_recursive(const char *path) |
46 | { |
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47 | cli_error(CL_ENOTSUP, "I do not yet remove directories"); |
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48 | return 1; |
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49 | } |
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50 | |||
51 | unsigned int rm_single(const char *path) |
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52 | { |
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53 | if (unlink(path)) { |
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54 | cli_error(CL_EFAIL, "rm: could not remove file %s", path); |
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55 | return 1; |
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56 | } |
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57 | return 0; |
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58 | } |
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59 | |||
60 | unsigned int rm_scope(const char *path) |
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61 | { |
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62 | int fd; |
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63 | DIR *dirp; |
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64 | |||
65 | dirp = opendir(path); |
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66 | if (dirp) { |
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67 | closedir(dirp); |
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68 | return RM_DIR; |
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69 | } |
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70 | |||
71 | fd = open(path, O_RDONLY); |
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72 | if (fd > 0) { |
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73 | close(fd); |
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74 | return RM_FILE; |
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75 | } |
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76 | |||
77 | return RM_BOGUS; |
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78 | } |
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79 | |||
3277 | post | 80 | /* Dispays help for rm in various levels */ |
81 | void * help_cmd_rm(unsigned int level) |
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82 | { |
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3296 | post | 83 | if (level == HELP_SHORT) { |
84 | printf("`%s' removes files and directories.\n", cmdname); |
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85 | } else { |
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86 | help_cmd_rm(HELP_SHORT); |
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87 | printf(" %s <path> If <path> is a directory, all files and " |
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88 | "directories\n within will be unconditionally removed.\n", |
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89 | cmdname); |
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90 | } |
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91 | return CMD_VOID; |
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3277 | post | 92 | } |
93 | |||
94 | /* Main entry point for rm, accepts an array of arguments */ |
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95 | int * cmd_rm(char **argv) |
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96 | { |
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97 | unsigned int argc; |
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3296 | post | 98 | unsigned int i, scope, ret = 0; |
99 | char *buff; |
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3277 | post | 100 | |
101 | /* Count the arguments */ |
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102 | for (argc = 0; argv[argc] != NULL; argc ++); |
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103 | |||
104 | if (argc < 2) { |
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3296 | post | 105 | cli_error(CL_EFAIL, |
106 | "%s - insufficient arguments. Try `help %s extended'", |
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107 | cmdname, cmdname); |
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108 | return CMD_FAILURE; |
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3277 | post | 109 | } |
110 | |||
3296 | post | 111 | for (i = 1; i < argc; i++) { |
112 | buff = cli_strdup(argv[i]); |
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113 | scope = rm_scope(buff); |
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114 | switch (scope) { |
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115 | case RM_BOGUS: |
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116 | cli_error(CL_ENOENT, "Can not unlink %s", buff); |
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117 | break; |
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118 | case RM_FILE: |
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119 | ret += rm_single(buff); |
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120 | break; |
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121 | case RM_DIR: |
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122 | ret += rm_recursive(buff); |
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123 | break; |
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124 | } |
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125 | free(buff); |
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126 | } |
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3277 | post | 127 | |
3296 | post | 128 | if (ret) |
129 | return CMD_FAILURE; |
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130 | else |
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131 | return CMD_SUCCESS; |
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3277 | post | 132 | } |
133 |