1 /* |
1 /* |
2 |
2 |
3 module: errlib.c |
3 module: errlib.c |
4 |
4 |
5 purpose: library of error functions |
5 purpose: library of error functions |
6 |
6 |
7 reference: Stevens, Unix network programming (2ed), p.922 |
7 reference: Stevens, Unix network programming (2ed), p.922 |
8 |
8 |
9 */ |
9 */ |
10 |
10 |
11 #include "errlib.h" |
11 #include "errlib.h" |
12 |
12 |
13 |
13 |
14 #define MAXLINE 4095 |
14 #define MAXLINE 4095 |
15 |
15 |
16 #ifdef __CPLUSPLUS |
16 int daemon_proc = 0; /* set to 0 if stdout/stderr available, else set to 1 */ |
17 extern "C" { |
17 |
18 #endif |
18 static void err_doit (int errnoflag, int level, const char *fmt, va_list ap) { |
19 |
19 int errno_save = errno, n; |
20 int daemon_proc = 0; /* set to 0 if stdout/stderr available, else set to 1 */ |
20 char buf[MAXLINE+1]; |
21 |
21 |
22 static void err_doit (int errnoflag, int level, const char *fmt, va_list ap) |
22 vsnprintf (buf, MAXLINE, fmt, ap); |
23 { |
23 n = strlen(buf); |
24 int errno_save = errno, n; |
24 if (errnoflag) |
25 char buf[MAXLINE+1]; |
25 snprintf (buf+n, MAXLINE-n, ": %s", strerror(errno_save)); |
26 |
26 strcat (buf, "\n"); |
27 vsnprintf (buf, MAXLINE, fmt, ap); |
27 |
28 n = strlen(buf); |
28 if (daemon_proc) |
29 if (errnoflag) |
29 syslog (level, buf); |
30 snprintf (buf+n, MAXLINE-n, ": %s", strerror(errno_save)); |
30 else { |
31 strcat (buf, "\n"); |
31 fflush (stdout); |
32 |
32 fprintf (stderr, "%s", buf); |
33 if (daemon_proc) |
33 fflush (stderr); |
34 syslog (level, buf); |
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35 else { |
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36 fflush (stdout); |
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37 fprintf (stderr, "%s", buf); |
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38 fflush (stderr); |
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39 } |
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40 |
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41 return; |
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42 } |
34 } |
43 |
35 |
44 void err_ret (const char *fmt, ...) |
36 return; |
45 { |
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46 va_list ap; |
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47 |
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48 va_start (ap, fmt); |
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49 err_doit (1, LOG_INFO, fmt, ap); |
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50 va_end (ap); |
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51 return; |
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52 } |
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53 |
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54 void err_sys (const char *fmt, ...) |
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55 { |
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56 va_list ap; |
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57 |
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58 va_start (ap, fmt); |
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59 err_doit (1, LOG_ERR, fmt, ap); |
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60 va_end (ap); |
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61 exit (1); |
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62 } |
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63 |
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64 void err_msg (const char *fmt, ...) |
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65 { |
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66 va_list ap; |
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67 |
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68 va_start (ap, fmt); |
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69 err_doit (0, LOG_INFO, fmt, ap); |
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70 va_end (ap); |
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71 return; |
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72 } |
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73 |
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74 void err_quit (const char *fmt, ...) |
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75 { |
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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 (0, LOG_ERR, fmt, ap); |
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80 va_end (ap); |
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81 exit (1); |
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82 } |
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83 |
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84 void err_dump (const char *fmt, ...) |
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85 { |
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86 va_list ap; |
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87 |
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88 va_start (ap, fmt); |
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89 err_doit (1, LOG_ERR, fmt, ap); |
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90 va_end (ap); |
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91 abort(); |
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92 } |
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93 |
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94 #ifdef __CPLUSPLUS |
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95 } |
37 } |
96 #endif |
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 } |