compiler-rt/test/sanitizer_common/TestCases/Posix/readlinkat.c

   1 // RUN: %clang -O0 %s -o %t && %run %t
   2
   3 // XFAIL: i386-netbsd && asan
   4
   5 #include <assert.h>
   6 #include <fcntl.h>
   7 #include <limits.h>
   8 #include <stdio.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11
  12 int main(int argc, char **argv) {
  13   char symlink_path[PATH_MAX];
  14   snprintf(symlink_path, sizeof(symlink_path), "%s_%d.symlink", argv[0],
  15            getpid());
  16   remove(symlink_path);
  17   int res = symlink(argv[0], symlink_path);
  18   assert(!res);
  19
  20   char readlinkat_path[PATH_MAX];
  21   int res2 = readlinkat(AT_FDCWD, symlink_path, readlinkat_path,
  22                         sizeof(readlinkat_path));
  23   assert(res2 >= 0);
  24   readlinkat_path[res2] = '\0';
  25   assert(!strcmp(readlinkat_path, argv[0]));
  26
  27   return 0;
  28 }