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/* Since the reentrant gethost functions take a char * buffer,
* we have to make sure they internally do not assume alignment.
* The actual return values are not relevant. If the test fails,
* it'll be due to an alignment exception which means the test
* app is killed by the kernel.
*/
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/socket.h>
int main(int argc, char *argv[])
{
size_t i;
char buf[1024];
in_addr_t addr;
addr = inet_addr("127.0.0.1");
for (i = 0; i < sizeof(size_t) * 2; ++i) {
struct hostent hent, *hentres;
int ret, herr;
printf("Testing misalignment of %2zi bytes: ", i);
#if defined(__GLIBC__) || defined(__UCLIBC__)
memset(&hent, 0x00, sizeof(hent));
ret = gethostent_r(&hent, buf + i, sizeof(buf) - i, &hentres, &herr);
printf("%sgethostent_r() ", (ret ? "!!!" : ""));
#endif
memset(&hent, 0x00, sizeof(hent));
ret = gethostbyname_r("localhost", &hent, buf + i, sizeof(buf) - i, &hentres, &herr);
printf("%sgethostbyname_r() ", (ret ? "!!!" : ""));
memset(&hent, 0x00, sizeof(hent));
ret = gethostbyname2_r("localhost", AF_INET, &hent, buf + i, sizeof(buf) - i, &hentres, &herr);
printf("%sgethostbyname2_r() ", (ret ? "!!!" : ""));
memset(&hent, 0x00, sizeof(hent));
ret = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &hent, buf + i, sizeof(buf) - i, &hentres, &herr);
printf("%sgethostbyaddr_r() ", (ret ? "!!!" : ""));
puts("OK!");
}
return 0;
}
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