Add fxstat check to glibc_syscall_wrappers test.

tests/glibc_syscall_wrappers/test_stat.c

Index: tests/glibc_syscall_wrappers/test_stat.c
===================================================================
--- tests/glibc_syscall_wrappers/test_stat.c	(revision 4008)
+++ tests/glibc_syscall_wrappers/test_stat.c	(working copy)
@@ -16,6 +16,8 @@
 int main(int argc, char** argv) {
   struct stat st;
   struct stat64 st64;
+  FILE* file;
+  int fileDesc;

[pasko-google - do not use, 2010/12/21 12:00:41]

s/fileDesc/fd/

 
   if (2 != argc) {
     printf("Usage: sel_ldr test_stat.nexe test_stat_data\n");
@@ -42,5 +44,20 @@
   assert(0 == errno);
   assert(KNOWN_FILE_SIZE == st64.st_size);
 
+  file = fopen(argv[1], "r");

[pasko-google - do not use, 2010/12/21 12:00:41]

please, make a separate test_fstat.c

+  assert (NULL != file);
+  fileDesc = fileno(file);
+  assert (0 ==  fstat(fileDesc, &st));
+  assert (KNOWN_FILE_SIZE == st.st_size);

[pasko-google - do not use, 2010/12/21 12:00:41]

also check for errno

+  assert (0 == fstat64(fileDesc, &st64));
+  assert (KNOWN_FILE_SIZE == st64.st_size);
+  assert (0 == fclose(file));
+  errno = 0;
+  assert (-1 == fstat(-1, &st));
+  assert (EBADF == errno);
+  errno = 0;
+  assert (-1 == fstat64(-1, &st64));
+  assert (EBADF == errno);
+
   return 0;
 }