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48 lwres_herror() prints the string s on stderr followed by the string
49 generated by lwres_hstrerror() for the error code stored in the global
50 variable lwres_h_errno.
52 lwres_hstrerror() returns an appropriate string for the error code
53 gievn by err. The values of the error codes and messages are as
56 \li #NETDB_SUCCESS: Resolver Error 0 (no error)
58 \li #HOST_NOT_FOUND: Unknown host
60 \li #TRY_AGAIN: Host name lookup failure
62 \li #NO_RECOVERY: Unknown server error
64 \li #NO_DATA: No address associated with name
68 #if defined(LIBC_SCCS) && !defined(lint)
69 static const char sccsid[] = "@(#)herror.c 8.1 (Berkeley) 6/4/93";
70 static const char rcsid[] =
72 #endif /* LIBC_SCCS and not lint */
78 #include <lwres/netdb.h>
79 #include <lwres/platform.h>
81 LIBLWRES_EXTERNAL_DATA int lwres_h_errno;
84 * these have never been declared in any header file so make them static
87 static const char *h_errlist[] = {
88 "Resolver Error 0 (no error)", /*%< 0 no error */
89 "Unknown host", /*%< 1 HOST_NOT_FOUND */
90 "Host name lookup failure", /*%< 2 TRY_AGAIN */
91 "Unknown server error", /*%< 3 NO_RECOVERY */
92 "No address associated with name", /*%< 4 NO_ADDRESS */
95 static int h_nerr = sizeof(h_errlist) / sizeof(h_errlist[0]);
100 * print the error indicated by the h_errno value.
103 lwres_herror(const char *s) {
104 fprintf(stderr, "%s: %s\n", s, lwres_hstrerror(lwres_h_errno));
109 * return the string associated with a given "host" errno value.
112 lwres_hstrerror(int err) {
114 return ("Resolver internal error");
115 else if (err < h_nerr)
116 return (h_errlist[err]);
117 return ("Unknown resolver error");