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3265 | post | 1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
2 | * All rights reserved. |
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3 | * |
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4 | * Redistribution and use in source and binary forms, with or without |
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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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30 | |||
31 | #include <stdio.h> |
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32 | #include <stdlib.h> |
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33 | #include <unistd.h> |
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34 | #include <string.h> |
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3267 | post | 35 | #ifdef HELENOS |
36 | #include <errno.h> |
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37 | #else |
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3265 | post | 38 | #include <sys/errno.h> |
3267 | post | 39 | #endif |
3265 | post | 40 | #include "util.h" |
41 | #include "errors.h" |
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42 | #include "entry.h" |
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43 | #include "cmds.h" |
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44 | #include "cd.h" |
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45 | |||
46 | static char * cmdname = "cd"; |
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47 | |||
48 | void * help_cmd_cd(unsigned int level) |
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49 | { |
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50 | if (level == HELP_SHORT) { |
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51 | printf("`%s' changes the current working directory.\n", cmdname); |
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52 | } else { |
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53 | printf( |
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3278 | post | 54 | " %s <directory>\n" |
55 | " Change directory to <directory>, e.g `%s /sbin'\n", |
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56 | cmdname, cmdname); |
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3265 | post | 57 | } |
58 | |||
59 | return CMD_VOID; |
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60 | } |
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61 | |||
62 | /* This is a very rudamentary 'cd' command. It is not 'link smart' (yet) */ |
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63 | |||
3269 | post | 64 | int * cmd_cd(char **argv, cliuser_t *usr) |
3265 | post | 65 | { |
66 | int argc, rc = 0; |
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67 | |||
68 | for (argc = 0; argv[argc] != NULL; argc ++); |
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69 | |||
70 | /* We don't yet play nice with whitespace, a getopt implementation should |
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71 | * protect "quoted\ destination" as a single argument. Its not our job to |
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72 | * look for && || or redirection as the tokenizer should have done that |
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73 | * (currently, it does not) */ |
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74 | |||
75 | if (argc > 2) { |
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76 | cli_error(CL_EFAIL, "Too many arguments to `%s'", cmdname); |
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77 | return CMD_FAILURE; |
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78 | } |
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79 | |||
3278 | post | 80 | if (argc < 2) { |
81 | printf("%s - no directory specified. Try `help %s extended'\n", |
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82 | cmdname, cmdname); |
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83 | return CMD_FAILURE; |
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84 | } |
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85 | |||
3265 | post | 86 | /* We have the correct # of arguments |
87 | * TODO: handle tidle (~) expansion? */ |
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88 | |||
3269 | post | 89 | rc = chdir(argv[1]); |
3265 | post | 90 | |
91 | if (rc == 0) { |
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92 | return CMD_SUCCESS; |
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93 | } else { |
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94 | switch (rc) { |
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95 | case ENOMEM: |
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96 | cli_error(CL_EFAIL, "Destination path too long"); |
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97 | break; |
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98 | case ENOENT: |
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99 | cli_error(CL_ENOENT, "Invalid directory `%s'", argv[1]); |
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100 | break; |
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101 | default: |
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102 | cli_error(CL_EFAIL, "Unable to change to `%s'", argv[1]); |
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103 | break; |
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104 | } |
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105 | } |
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106 | |||
107 | return CMD_FAILURE; |
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108 | } |