fs: link

src/fs/tmpfs.c

@@ -220,8 +220,17 @@ static int tmpfs_readlink(vnode_t *node, char** buff, size_t* linksize){
 
 }
 
+static int tmpfs_link(dirnode_t* parent, char* name, vnode_t* link){
+	
+	if(!hashtable_insert(&parent->children, name, link))
+		return ENOMEM;
+
+	++link->st.st_nlink;
+
+}
+
 static fscalls_t funcs = {
-	tmpfs_mount, tmpfs_unmount, tmpfs_open, tmpfs_close, tmpfs_mkdir, tmpfs_create, tmpfs_write, tmpfs_read, tmpfs_getdirent, tmpfs_chmod, tmpfs_mksocket, tmpfs_symlink, tmpfs_readlink
+	tmpfs_mount, tmpfs_unmount, tmpfs_open, tmpfs_close, tmpfs_mkdir, tmpfs_create, tmpfs_write, tmpfs_read, tmpfs_getdirent, tmpfs_chmod, tmpfs_mksocket, tmpfs_symlink, tmpfs_readlink, tmpfs_link
 };
 
 

src/fs/vfs.c

@@ -297,9 +297,7 @@ int vfs_mksocket(dirnode_t* ref, char* path, mode_t mode){
 	
 	spinlock_release(&lock);
 	
-	if(result) return result;
+	return result;
-	
-	return 0;
 }
 
 int vfs_symlink(dirnode_t* ref, char* path, char* target, mode_t mode){
@@ -334,12 +332,49 @@ int vfs_symlink(dirnode_t* ref, char* path, char* target, mode_t mode){
 
         spinlock_release(&lock);
 
-        if(result) return result;
+	return result;
-
 
 
 }
 
+int vfs_link(dirnode_t* ref, vnode_t* link, char* path){
+	
+	dirnode_t* parent = NULL;
+	dirnode_t* buff   = NULL;
+	char name[512];
+
+        spinlock_acquire(&lock);
+
+        int result = vfs_resolvepath(&buff, &parent, ref, path, name, true, VFS_MAX_LOOP);
+
+        if(buff){
+                spinlock_release(&lock);
+                return EEXIST;
+        }
+
+        if(!parent){
+                spinlock_release(&lock);
+                return result;
+        }
+
+        if(!parent->vnode.fs->calls->link){
+                spinlock_release(&lock);
+                return ENOSYS;
+        }
+	
+	if(link->fs != parent->vnode.fs)
+		return EXDEV;
+
+        result = parent->vnode.fs->calls->link(parent, link, name);
+
+        spinlock_release(&lock);
+
+	return result;
+
+
+}
+
+
 int vfs_mkdir(dirnode_t* ref, char* path, mode_t mode){
 
 	dirnode_t* parent = NULL;
@@ -365,9 +400,7 @@ int vfs_mkdir(dirnode_t* ref, char* path, mode_t mode){
 	
 	spinlock_release(&lock);
 	
-	if(result) return result;
+	return result;
-	
-	return 0;
 }
 
 int vfs_mount(dirnode_t* ref, char* device, char* mountpoint, char* fs, int mountflags, void* fsinfo){

src/include/kernel/vfs.h

@@ -70,6 +70,8 @@ typedef struct _fscalls_t {
 	int	 (*symlink)(dirnode_t* ref, char* path, char* target, mode_t mode);
 	//	 reads a symlink
 	int	 (*readlink)(vnode_t* node, char** buff, size_t* linksize);
+	//	 creates a hard link
+	int 	 (*link)(dirnode_t* parent, vnode_t* link, char* name);
 } fscalls_t;
 
 int vfs_mksocket(dirnode_t* ref, char* path, mode_t mode);
@@ -87,6 +89,7 @@ int vfs_ioctl(vnode_t* node, unsigned long request, void* arg, int* result);
 int vfs_poll(vnode_t* node, pollfd* fd);
 int vfs_chmod(vnode_t* node, mode_t mode);
 int vfs_symlink(dirnode_t* ref, char* path, char* target, mode_t mode);
+int vfs_link(dirnode_t* ref, vnode_t* link, char* path);
 
 void vfs_init();
 dirnode_t* vfs_root();