static char *sigar_error_string(int err, char *errbuf, int buflen)
{
switch (err) {
case SIGAR_ENOTIMPL:
SIGAR_STRNCPY(errbuf, "This function has not been implemented on this platform", buflen);
return errbuf;
default:
SIGAR_STRNCPY(errbuf, "Error string not specified yet", buflen);
return errbuf;
}
}
char *sigar_strerror_get(int err, char *errbuf, int buflen)
{
#ifdef WIN32
DWORD len;
#endif
char *buf = NULL;
strcpy(errbuf, "???");
#ifdef WIN32
len = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT), /* force english */
(LPTSTR)errbuf,
(DWORD)buflen,
NULL);
#else
#if defined(HAVE_STRERROR_R) && defined(HAVE_STRERROR_R_GLIBC)
/*
* strerror_r man page says:
* "The GNU version may, but need not, use the user supplied buffer"
*/
buf = strerror_r(err, errbuf, buflen);
#elif defined(HAVE_STRERROR_R)
if (strerror_r(err, errbuf, buflen) < 0) {
buf = "Unknown Error";
}
#else
/* strerror() is thread safe on solaris and hpux */
buf = strerror(err);
#endif
if (buf != NULL) {
SIGAR_STRNCPY(errbuf, buf, buflen);
}
#endif
return errbuf;
}
char *sigar_strerror_get(int err, char *errbuf, int buflen)
{
char *buf = NULL;
#ifdef WIN32
DWORD len;
len = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
0, /* default language */
(LPTSTR)errbuf,
(DWORD)buflen,
NULL);
#else
#if defined(HAVE_STRERROR_R) && defined(HAVE_STRERROR_R_GLIBC)
/*
* strerror_r man page says:
* "The GNU version may, but need not, use the user supplied buffer"
*/
buf = strerror_r(err, errbuf, buflen);
#elif defined(HAVE_STRERROR_R)
if (strerror_r(err, errbuf, buflen) < 0) {
buf = "Unknown Error";
}
#else
/* strerror() is thread safe on solaris and hpux */
buf = strerror(err);
#endif
if (buf != NULL) {
SIGAR_STRNCPY(errbuf, buf, buflen);
}
#endif
return errbuf;
}
SIGAR_DECLARE(char *) sigar_strerror(sigar_t *sigar, int err)
{
char *buf;
if (err < 0) {
return sigar->errbuf;
}
if (err > SIGAR_OS_START_ERROR) {
if ((buf = sigar_os_error_string(sigar, err)) != NULL) {
return buf;
}
SIGAR_STRNCPY(sigar->errbuf, "Unknown OS Error", sizeof(sigar->errbuf)); /* should never happen */
//return "Unknown OS Error"; /* should never happen */
return sigar->errbuf;
}
if (err > SIGAR_START_ERROR) {
return sigar_error_string(err, sigar->errbuf, sizeof(sigar->errbuf));
}
return sigar_strerror_get(err, sigar->errbuf, sizeof(sigar->errbuf));
}