Elliott Hughes | dc75b01 | 2017-07-05 13:54:44 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2017 The strace developers. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * 3. The name of the author may not be used to endorse or promote products |
| 13 | * derived from this software without specific prior written permission. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 16 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 17 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 18 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 | */ |
| 26 | |
| 27 | #include "defs.h" |
| 28 | |
| 29 | struct dyxlat { |
| 30 | size_t used; |
| 31 | size_t allocated; |
| 32 | struct xlat *xlat; |
| 33 | }; |
| 34 | |
| 35 | #define MARK_END(xlat) \ |
| 36 | do { \ |
| 37 | (xlat).val = 0; \ |
| 38 | (xlat).str = 0; \ |
| 39 | } while (0) |
| 40 | |
| 41 | struct dyxlat * |
| 42 | dyxlat_alloc(const size_t nmemb) |
| 43 | { |
| 44 | struct dyxlat *const dyxlat = xmalloc(sizeof(*dyxlat)); |
| 45 | |
| 46 | dyxlat->used = 1; |
Elliott Hughes | b755614 | 2018-02-20 17:03:16 -0800 | [diff] [blame] | 47 | dyxlat->allocated = nmemb; |
| 48 | dyxlat->xlat = xgrowarray(NULL, &dyxlat->allocated, sizeof(struct xlat)); |
Elliott Hughes | dc75b01 | 2017-07-05 13:54:44 -0700 | [diff] [blame] | 49 | MARK_END(dyxlat->xlat[0]); |
| 50 | |
| 51 | return dyxlat; |
| 52 | } |
| 53 | |
| 54 | void |
| 55 | dyxlat_free(struct dyxlat *const dyxlat) |
| 56 | { |
| 57 | size_t i; |
| 58 | |
| 59 | for (i = 0; i < dyxlat->used - 1; ++i) { |
| 60 | free((void *) dyxlat->xlat[i].str); |
| 61 | dyxlat->xlat[i].str = NULL; |
| 62 | } |
| 63 | |
| 64 | free(dyxlat->xlat); |
| 65 | dyxlat->xlat = NULL; |
| 66 | free(dyxlat); |
| 67 | } |
| 68 | |
| 69 | const struct xlat * |
| 70 | dyxlat_get(const struct dyxlat *const dyxlat) |
| 71 | { |
| 72 | return dyxlat->xlat; |
| 73 | } |
| 74 | |
| 75 | void |
| 76 | dyxlat_add_pair(struct dyxlat *const dyxlat, const uint64_t val, |
| 77 | const char *const str, const size_t len) |
| 78 | { |
| 79 | size_t i; |
| 80 | |
| 81 | for (i = 0; i < dyxlat->used - 1; ++i) { |
| 82 | if (dyxlat->xlat[i].val == val) { |
| 83 | if (strncmp(dyxlat->xlat[i].str, str, len) == 0 |
| 84 | && dyxlat->xlat[i].str[len] == '\0') |
| 85 | return; |
| 86 | |
| 87 | free((void *) dyxlat->xlat[i].str); |
| 88 | dyxlat->xlat[i].str = xstrndup(str, len); |
| 89 | return; |
| 90 | } |
| 91 | } |
| 92 | |
Elliott Hughes | b755614 | 2018-02-20 17:03:16 -0800 | [diff] [blame] | 93 | if (dyxlat->used >= dyxlat->allocated) |
| 94 | dyxlat->xlat = xgrowarray(dyxlat->xlat, &dyxlat->allocated, |
| 95 | sizeof(struct xlat)); |
Elliott Hughes | dc75b01 | 2017-07-05 13:54:44 -0700 | [diff] [blame] | 96 | |
| 97 | dyxlat->xlat[dyxlat->used - 1].val = val; |
| 98 | dyxlat->xlat[dyxlat->used - 1].str = xstrndup(str, len); |
| 99 | MARK_END(dyxlat->xlat[dyxlat->used]); |
| 100 | dyxlat->used++; |
| 101 | } |