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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9
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10
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11 #if (HAVE_STRERROR_R)
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12
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13 ngx_int_t ngx_strerror_r(int err, char *errstr, size_t size)
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14 {
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15 size_t len;
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16
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17 if (size == 0) {
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18 return 0;
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19 }
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20
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21 errstr[0] = '\0';
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22
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23 strerror_r(err, errstr, size);
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24
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25 for (len = 0; len < size; len++) {
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26 if (errstr[len] == '\0') {
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27 break;
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28 }
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29 }
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30
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31 return len;
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32 }
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33
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34 #elif (HAVE_GNU_STRERROR_R)
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35
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36 /* Linux strerror_r() */
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37
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38 ngx_int_t ngx_strerror_r(int err, char *errstr, size_t size)
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39 {
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40 char *str;
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41 size_t len;
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42
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43 if (size == 0) {
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44 return 0;
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45 }
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46
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47 errstr[0] = '\0';
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48
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49 str = strerror_r(err, errstr, size);
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50
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51 if (str != errstr) {
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52 return ngx_cpystrn(errstr, str, size) - (u_char *) errstr;
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53 }
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54
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55 for (len = 0; len < size; len++) {
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56 if (errstr[len] == '\0') {
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57 break;
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58 }
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59 }
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60
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61 return len;
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62 }
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63
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64 #endif
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