Provides some of the missing POSIX file syscalls

src/shared/platform/nacl_host_desc.h

Index: src/shared/platform/nacl_host_desc.h
diff --git a/src/shared/platform/nacl_host_desc.h b/src/shared/platform/nacl_host_desc.h
index 834b73c266b6d1e1b9d93cbd45ed995fee06943a..7ed75823e6358510d45d0778fd39fc0518d9f53e 100644
--- a/src/shared/platform/nacl_host_desc.h
+++ b/src/shared/platform/nacl_host_desc.h
@@ -17,6 +17,7 @@
 #include "native_client/src/include/nacl_compiler_annotations.h"
 #include "native_client/src/include/portability.h"
 #include "native_client/src/shared/platform/nacl_sync.h"
+#include "native_client/src/trusted/service_runtime/include/sys/time.h"
 
 #if NACL_LINUX || NACL_OSX
 # include "native_client/src/shared/platform/posix/nacl_host_desc_types.h"
@@ -333,6 +334,41 @@ extern int NaClHostDescGetcwd(char *path, size_t len) NACL_WUR;
  */
 extern int NaClHostDescUnlink(char const *path) NACL_WUR;
 
+extern int NaClHostDescTruncate(const char    *path,
+                                nacl_off64_t  length) NACL_WUR;
+
+extern int NaClHostDescLstat(char const       *host_os_pathname,
+                             nacl_host_stat_t *nasp) NACL_WUR;
+
+extern int NaClHostDescLink(const char *oldpath,
+                            const char *newpath) NACL_WUR;
+
+extern int NaClHostDescChmod(const char *path, int mode) NACL_WUR;
+
+extern int NaClHostDescAccess(const char *pathname, int mode) NACL_WUR;
+
+extern int NaClHostDescRename(const char *oldpath,
+                              const char *newpath) NACL_WUR;
+
+extern int NaClHostDescReadlink(const char  *path,
+                                char        *buf,
+                                size_t      bufsiz) NACL_WUR;
+
+extern int NaClHostDescSymlink(const char *oldpath,
+                               const char *newpath) NACL_WUR;
+
+extern int NaClHostDescUtimes(const char                    *filename,
+                              const struct nacl_abi_timeval times[2]) NACL_WUR;
+
+extern int NaClHostDescFchmod(struct NaClHostDesc *d, int mode) NACL_WUR;
+
+extern int NaClHostDescFsync(struct NaClHostDesc *d) NACL_WUR;
+
+extern int NaClHostDescFdatasync(struct NaClHostDesc *d) NACL_WUR;
+
+extern int NaClHostDescFtruncate(struct NaClHostDesc  *d,
+                                 nacl_off64_t         length) NACL_WUR;
+
 /*
  * Maps NACI_ABI_ versions of the mmap prot argument to host ABI versions
  * of the bit values