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Better error messages on Windows

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This commit is contained in:
Joseph C. Lehner 2016-02-05 20:20:23 +02:00
parent 7196e445ca
commit 0fbee16f65
1 changed files with 13 additions and 2 deletions
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15
ethsock.c
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@ -87,9 +87,20 @@ static bool get_hwaddr(uint8_t *hwaddr, const char *intf)
}
#else
static void win_perror2(const char *msg, int err)
void win_perror2(const char *msg, DWORD err)
{
fprintf(stderr, "%s: error %d\n", msg, err);
char *buf = NULL;
FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&buf, 0, NULL);
if (buf) {
fprintf(stderr, "%s: %s (%d)\n", msg, buf, (int)err);
LocalFree(buf);
} else {
fprintf(stderr, "%s: error %d\n", msg, (int)err);
}
}
static bool get_hwaddr(uint8_t *hwaddr, const char *intf)