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; 47 dyxlat->allocated = nmemb; 48 dyxlat->xlat = xgrowarray(NULL, &dyxlat->allocated, sizeof(struct xlat)); 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 93 if (dyxlat->used >= dyxlat->allocated) 94 dyxlat->xlat = xgrowarray(dyxlat->xlat, &dyxlat->allocated, 95 sizeof(struct xlat)); 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 } 102
