fix: stub some more functions

newlib/libc/sys/hermit/crt0.c

@@ -29,6 +29,7 @@
 #include <unistd.h>
 #include <getopt.h>
 #include <reent.h>
+#include <dirent.h>
 #include "syscall.h"
 
 
@@ -93,6 +94,55 @@ int32_t mkdir(const char *name, uint32_t mode) {
    return sys_mkdir(name, mode);
 }
 
+int chdir(const char *path) {
+   return -1;
+}
+
+int fchdir(int fd) {
+   return -1;
+}
+
+int chmod(const char *path, mode_t mode) {
+   return -1;
+}
+
+int fchmod(int fd, mode_t mode) {
+   return -1;
+}
+
+int chown(const char *path, uid_t owner, gid_t group) {
+   return -1;
+}
+
+int fchown(int fd, uid_t owner, gid_t group) {
+   return -1;
+}
+
+int truncate(const char *path, off_t length) {
+   return -1;
+}
+int ftruncate(int fd, off_t length) { 
+   return -1; 
+}
+
+long fpathconf (int fd, int name) {
+   return -1;
+}
+
+long pathconf (const char *path, int name) {
+   return -1;
+}
+
+char *getcwd (char *__buf, size_t __size) {
+   return NULL;
+}
+
+int getdents(int fd, void *dp, int count) { return -1; }
+
+int _rename_r (struct _reent *r, const char *a, const char *b) { return -1; }
+
+
+
 void runtime_entry(int argc, char** argv, char** env)
 {
    int ret;

newlib/libc/sys/hermit/readlink.c

@@ -33,13 +33,11 @@
 #include <sys/types.h>
 #include "warning.h"
 
-#if 0
 int
 readlink (const char* path, char* buf, size_t bufsize)
 {
 	return _readlink_r(_REENT, path, buf, bufsize);
 }
-#endif
 
 int
 _readlink_r (struct _reent* ptr, const char* path, char* buf, size_t bufsize)

newlib/libc/sys/hermit/symlink.c

@@ -32,13 +32,11 @@
 #include <errno.h>
 #include "warning.h"
 
-#if 0
 int
 symlink (const char* path1, const char* path2)
 {
 	return _symlink_r(_REENT, path1, path2);
 }
-#endif
 
 int
 _symlink_r (struct _reent* ptr, const char* path1, const char* path2)