1// This is a test for access_extended(), one of the more ridiculous syscalls
2// ever devised.  For bug 200760.  See the comments on the wrapper in
3// syswrap-darwin.c to understand what is going on here.
4
5#include <sys/syscall.h>
6#include <unistd.h>
7#include <stdio.h>
8#include <stdlib.h>
9#include <string.h>
10
11int main(void)
12{
13   char* name1 = "access_extended.c";
14   char* name2 = "no_such_file";
15   // Space for three descriptors and the two strings (and NUL chars for them).
16   size_t entries_szB =
17      sizeof(struct accessx_descriptor) * 3 +
18      strlen(name1) + 1 +
19      strlen(name2) + 1;
20   struct accessx_descriptor* entries = malloc(entries_szB);
21   char* string1 = (char*)&entries[3];
22   char* string2 = string1 + strlen(name1) + 1;
23   int results[3];
24   int retval;
25
26   entries[0].ad_name_offset = string1 - (char*)entries;
27   entries[1].ad_name_offset = 0;   // reuse the previous entry's string
28   entries[2].ad_name_offset = string2 - (char*)entries;
29   entries[0].ad_flags       = F_OK;      // succeeds
30   entries[1].ad_flags       = X_OK;      // fails
31   entries[2].ad_flags       = F_OK;      // fails
32   strcpy(string1, name1);
33   strcpy(string2, name2);
34
35   retval = syscall(SYS_access_extended, entries, entries_szB, results,
36                    /*uid--unused?*/0);
37
38   fprintf(stderr, "retval = %d\n", retval);
39   fprintf(stderr, "%s(F_OK) = %d (%s)\n",
40      name1, results[0], strerror(results[0]));
41   fprintf(stderr, "%s(X_OK) = %d (%s)\n",
42      name1, results[1], strerror(results[1]));
43   fprintf(stderr, "%s(F_OK) = %d (%s)\n",
44      name2, results[2], strerror(results[2]));
45
46   return 0;
47}
48
49