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1 | office | 1 | /** |
2 | * @file exit.c |
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3 | * @author Ambroz Bizjak <ambrop7@gmail.com> |
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4 | * |
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5 | * @section LICENSE |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * 2. Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * 3. Neither the name of the author nor the |
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15 | * names of its contributors may be used to endorse or promote products |
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16 | * derived from this 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" AND |
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19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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21 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | * |
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29 | * @section DESCRIPTION |
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30 | * |
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31 | * Synopsis: |
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32 | * exit(string exit_code) |
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33 | * |
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34 | * Description: |
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35 | * Initiates termination of the interpreter. Calling exit() multiple times will override |
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36 | * the previously set exit code. When the interpreter receives a signal, it reacts |
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37 | * equivalently to calling exit(1) (possibly overriding your error code). |
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38 | */ |
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39 | |||
40 | #include <limits.h> |
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41 | |||
42 | #include <ncd/module_common.h> |
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43 | |||
44 | #include <generated/blog_channel_ncd_exit.h> |
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45 | |||
46 | static void func_new (void *unused, NCDModuleInst *i, const struct NCDModuleInst_new_params *params) |
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47 | { |
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48 | // check arguments |
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49 | NCDValRef exit_code_arg; |
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50 | if (!NCDVal_ListRead(params->args, 1, &exit_code_arg)) { |
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51 | ModuleLog(i, BLOG_ERROR, "wrong arity"); |
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52 | goto fail0; |
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53 | } |
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54 | |||
55 | // parse exit code |
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56 | uintmax_t exit_code; |
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57 | if (!ncd_read_uintmax(exit_code_arg, &exit_code) || exit_code >= INT_MAX) { |
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58 | ModuleLog(i, BLOG_ERROR, "wrong exit code value"); |
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59 | goto fail0; |
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60 | } |
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61 | |||
62 | // signal up |
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63 | NCDModuleInst_Backend_Up(i); |
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64 | |||
65 | // initiate exit (before up!) |
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66 | NCDModuleInst_Backend_InterpExit(i, exit_code); |
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67 | return; |
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68 | |||
69 | fail0: |
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70 | NCDModuleInst_Backend_DeadError(i); |
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71 | } |
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72 | |||
73 | static struct NCDModule modules[] = { |
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74 | { |
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75 | .type = "exit", |
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76 | .func_new2 = func_new |
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77 | }, { |
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78 | .type = NULL |
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79 | } |
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80 | }; |
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81 | |||
82 | const struct NCDModuleGroup ncdmodule_exit = { |
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83 | .modules = modules |
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84 | }; |