1 /* |
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2 |
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3 module: errlib.c |
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4 |
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5 purpose: library of error functions |
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6 |
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7 reference: Stevens, Unix network programming (2ed), p.922 |
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8 |
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9 */ |
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10 |
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11 #include "errlib.h" |
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12 |
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13 |
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14 #define MAXLINE 4095 |
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15 |
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16 int daemon_proc = 0; /* set to 0 if stdout/stderr available, else set to 1 */ |
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17 |
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18 static void err_doit (int errnoflag, int level, const char *fmt, va_list ap) { |
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19 int errno_save = errno, n; |
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20 char buf[MAXLINE+1]; |
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21 |
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22 vsnprintf (buf, MAXLINE, fmt, ap); |
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23 n = strlen(buf); |
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24 if (errnoflag) |
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25 snprintf (buf+n, MAXLINE-n, ": %s", strerror(errno_save)); |
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26 strcat (buf, "\n"); |
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27 |
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28 if (daemon_proc) |
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29 syslog (level, buf); |
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30 else { |
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31 fflush (stdout); |
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32 fprintf (stderr, "%s", buf); |
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33 fflush (stderr); |
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34 } |
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35 |
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36 return; |
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37 } |
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38 |
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39 void err_ret (const char *fmt, ...) { |
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40 va_list ap; |
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41 |
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42 va_start (ap, fmt); |
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43 err_doit (1, LOG_INFO, fmt, ap); |
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44 va_end (ap); |
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45 return; |
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46 } |
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47 |
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48 void err_sys (const char *fmt, ...) { |
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49 va_list ap; |
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50 |
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51 va_start (ap, fmt); |
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52 err_doit (1, LOG_ERR, fmt, ap); |
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53 va_end (ap); |
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54 exit (1); |
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55 } |
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56 |
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57 void err_msg (const char *fmt, ...) { |
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58 va_list ap; |
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59 |
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60 va_start (ap, fmt); |
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61 err_doit (0, LOG_INFO, fmt, ap); |
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62 va_end (ap); |
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63 return; |
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64 } |
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65 |
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66 void err_quit (const char *fmt, ...) { |
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67 va_list ap; |
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68 |
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69 va_start (ap, fmt); |
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70 err_doit (0, LOG_ERR, fmt, ap); |
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71 va_end (ap); |
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72 exit (1); |
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73 } |
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74 |
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75 void err_dump (const char *fmt, ...) { |
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76 va_list ap; |
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77 |
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78 va_start (ap, fmt); |
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79 err_doit (1, LOG_ERR, fmt, ap); |
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80 va_end (ap); |
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81 abort(); |
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82 } |
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