Mercurial > hg > nginx
annotate src/core/ngx_list.h @ 7525:575480d3fd01
Perl: propagate errors.
When an error happens, the ctx->error bit is now set, and croak()
is called to terminate further processing. The ctx->error bit is
checked in ngx_http_perl_call_handler() to cancel further processing,
and is also checked in various output functions - to make sure these won't
be called if croak() was handled by an eval{} in perl code.
In particular, this ensures that output chain won't be called after
errors, as filters might not expect this to happen. This fixes some
segmentation faults under low memory conditions. Also this stops
request processing after filter finalization or request body reading
errors.
For cases where an HTTP error status can be additionally returned (for
example, 416 (Requested Range Not Satisfiable) from the range filter),
the ctx->status field is also added.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Fri, 12 Jul 2019 13:56:21 +0300 |
parents | d620f497c50f |
children |
rev | line source |
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441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #ifndef _NGX_LIST_H_INCLUDED_ |
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9 #define _NGX_LIST_H_INCLUDED_ |
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10 |
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11 |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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14 |
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15 |
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16 typedef struct ngx_list_part_s ngx_list_part_t; |
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17 |
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18 struct ngx_list_part_s { |
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19 void *elts; |
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20 ngx_uint_t nelts; |
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21 ngx_list_part_t *next; |
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22 }; |
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23 |
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24 |
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25 typedef struct { |
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26 ngx_list_part_t *last; |
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27 ngx_list_part_t part; |
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28 size_t size; |
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29 ngx_uint_t nalloc; |
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30 ngx_pool_t *pool; |
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31 } ngx_list_t; |
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32 |
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33 |
766 | 34 ngx_list_t *ngx_list_create(ngx_pool_t *pool, ngx_uint_t n, size_t size); |
35 | |
36 static ngx_inline ngx_int_t | |
37 ngx_list_init(ngx_list_t *list, ngx_pool_t *pool, ngx_uint_t n, size_t size) | |
415
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38 { |
501 | 39 list->part.elts = ngx_palloc(pool, n * size); |
40 if (list->part.elts == NULL) { | |
415
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41 return NGX_ERROR; |
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42 } |
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43 |
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44 list->part.nelts = 0; |
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45 list->part.next = NULL; |
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46 list->last = &list->part; |
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47 list->size = size; |
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48 list->nalloc = n; |
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49 list->pool = pool; |
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50 |
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51 return NGX_OK; |
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52 } |
414
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53 |
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54 |
415
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55 /* |
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56 * |
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57 * the iteration through the list: |
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58 * |
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59 * part = &list.part; |
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60 * data = part->elts; |
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61 * |
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62 * for (i = 0 ;; i++) { |
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63 * |
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64 * if (i >= part->nelts) { |
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65 * if (part->next == NULL) { |
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66 * break; |
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67 * } |
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68 * |
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69 * part = part->next; |
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70 * data = part->elts; |
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71 * i = 0; |
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72 * } |
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73 * |
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74 * ... data[i] ... |
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75 * |
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76 * } |
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77 */ |
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78 |
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79 |
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80 void *ngx_list_push(ngx_list_t *list); |
414
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81 |
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82 |
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83 #endif /* _NGX_LIST_H_INCLUDED_ */ |