Compat work towards porting vim.

Kernel/MemoryManager.cpp

@@ -389,7 +389,7 @@ PageFaultResponse MemoryManager::handle_page_fault(const PageFault& fault)
             ASSERT(success);
             return PageFaultResponse::Continue;
         }
-        kprintf("PV(error) fault in Region{%p}[%u]\n", region, page_index_in_region);
+        kprintf("PV(error) fault in Region{%p}[%u] at L%x\n", region, page_index_in_region, fault.laddr().get());
     } else {
         ASSERT_NOT_REACHED();
     }

Kernel/Process.cpp

@@ -226,7 +226,7 @@ Process* Process::fork(RegisterDump& regs)
 
     for (auto& region : m_regions) {
 #ifdef FORK_DEBUG
-        dbgprintf("fork: cloning Region{%p} \"%s\" L%x\n", region.ptr(), region->name.characters(), region->laddr().get());
+        dbgprintf("fork: cloning Region{%p} \"%s\" L%x\n", region.ptr(), region->name().characters(), region->laddr().get());
 #endif
         auto cloned_region = region->clone();
         child->m_regions.append(move(cloned_region));
@@ -1140,10 +1140,9 @@ int Process::sys$utime(const char* pathname, const utimbuf* buf)
 
 int Process::sys$access(const char* pathname, int mode)
 {
-    (void) mode;
     if (!validate_read_str(pathname))
         return -EFAULT;
-    ASSERT_NOT_REACHED();
+    return VFS::the().access(String(pathname), mode, cwd_inode());
 }
 
 int Process::sys$fcntl(int fd, int cmd, dword arg)

Kernel/UnixTypes.h

@@ -2,6 +2,11 @@
 
 #define WNOHANG 1
 
+#define R_OK 4
+#define W_OK 2
+#define X_OK 1
+#define F_OK 0
+
 #define SIG_DFL ((void*)0)
 #define SIG_ERR ((void*)-1)
 #define SIG_IGN ((void*)1)
@@ -265,6 +270,7 @@ typedef dword blkcnt_t;
 
 typedef uint32_t tcflag_t;
 typedef uint8_t cc_t;
+typedef uint32_t speed_t;
 
 struct termios {
     tcflag_t c_iflag;
@@ -272,6 +278,8 @@ struct termios {
     tcflag_t c_cflag;
     tcflag_t c_lflag;
     cc_t     c_cc[NCCS];
+    speed_t  c_ispeed;
+    speed_t  c_ospeed;
 };
 
 struct stat {

Kernel/VirtualFileSystem.cpp

@@ -268,6 +268,28 @@ KResult VFS::mkdir(const String& path, mode_t mode, Inode& base)
     return KResult(error);
 }
 
+KResult VFS::access(const String& path, int mode, Inode& base)
+{
+    auto inode_or_error = resolve_path_to_inode(path, base);
+    if (inode_or_error.is_error())
+        return inode_or_error.error();
+    auto inode = inode_or_error.value();
+    auto metadata = inode->metadata();
+    if (mode & R_OK) {
+        if (!metadata.may_read(*current))
+            return KResult(-EACCES);
+    }
+    if (mode & W_OK) {
+        if (!metadata.may_write(*current))
+            return KResult(-EACCES);
+    }
+    if (mode & X_OK) {
+        if (!metadata.may_execute(*current))
+            return KResult(-EACCES);
+    }
+    return KSuccess;
+}
+
 KResult VFS::chmod(const String& path, mode_t mode, Inode& base)
 {
     auto inode_or_error = resolve_path_to_inode(path, base);

Kernel/VirtualFileSystem.h

@@ -70,6 +70,7 @@ public:
     bool unlink(const String& path, Inode& base, int& error);
     bool rmdir(const String& path, Inode& base, int& error);
     KResult chmod(const String& path, mode_t, Inode& base);
+    KResult access(const String& path, int mode, Inode& base);
     bool stat(const String& path, int& error, int options, Inode& base, struct stat&);
     KResult utime(const String& path, Inode& base, time_t atime, time_t mtime);
 

Kernel/makeall.sh

@@ -4,7 +4,6 @@ sudo id
 
 make_cmd="make -j2"
 
-rm -r ../Root/usr && \
 $make_cmd -C ../LibC clean && \
 $make_cmd -C ../LibC && \
 (cd ../LibC && ./install.sh) && \