testsuite/systemtap.base/utrace_syscall_args.c

   1 #include <sys/types.h>
   2 #include <sys/stat.h>
   3 #include <sys/mman.h>
   4 #include <fcntl.h>
   5 #include <unistd.h>
   6 #include <sys/syscall.h>   /* For SYS_xxx definitions */
   7
   8 int main()
   9 {
  10         int fd, ret;
  11         struct stat fs;
  12         void *r;
  13         int rc;
  14
  15         /* create a file with something in it */
  16         fd = open("foobar", O_WRONLY|O_CREAT|O_TRUNC, 0600);
  17         lseek(fd, 1024, SEEK_SET);
  18         write(fd, "abcdef", 6);
  19         close(fd);
  20
  21         fd = open("foobar", O_RDONLY);
  22
  23         /* stat for file size */
  24         ret = fstat(fd, &fs);
  25
  26         /* mmap file file, then unmap it. */
  27         r = mmap(NULL, fs.st_size, PROT_READ, MAP_SHARED, fd, 0);
  28         if (r != MAP_FAILED)
  29                 munmap(r, fs.st_size);
  30         close(fd);
  31
  32         /* OK, try some system calls to see if we get the arguments
  33          * correctly. */
  34 #if (__LONG_MAX__ > __INT_MAX__)
  35         rc = syscall (__NR_dup, (unsigned long)-12345,
  36                       (unsigned long)0xffffffffffffffff,
  37                       (unsigned long)0xa5a5a5a5a5a5a5a5,
  38                       (unsigned long)0xf0f0f0f0f0f0f0f0,
  39                       (unsigned long)0x5a5a5a5a5a5a5a5a,
  40                       (unsigned long)0xe38e38e38e38e38e);
  41 #else
  42         rc = syscall (__NR_dup, (unsigned long)-12345,
  43                       (unsigned long)0xffffffff,
  44                       (unsigned long)0xa5a5a5a5,
  45                       (unsigned long)0xf0f0f0f0,
  46                       (unsigned long)0x5a5a5a5a,
  47                       (unsigned long)0xe38e38e3);
  48 #endif
  49 #if (__LONG_MAX__ > __INT_MAX__)
  50         rc = syscall ((unsigned long)0xffff,
  51                       (unsigned long)0x1c71c71c71c71c71,
  52                       (unsigned long)0x0f0f0f0f0f0f0f0f,
  53                       (unsigned long)0xdb6db6db6db6db6d,
  54                       (unsigned long)0x2492492492492492,
  55                       (unsigned long)0xad6b5ad6b5ad6b5a,
  56                       (unsigned long)0xdef7ddef7ddef7dd);
  57 #else
  58         rc = syscall ((unsigned long)0xffff,
  59                       (unsigned long)0x1c71c71c,
  60                       (unsigned long)0x0f0f0f0f,
  61                       (unsigned long)0xdb6db6db,
  62                       (unsigned long)0x24924924,
  63                       (unsigned long)0xad6b5ad6,
  64                       (unsigned long)0xdef7ddef);
  65 #endif
  66         return 0;
  67 }