5 files changed, 38 insertions, 2 deletions
diff --git a/src/sys/include/os/kalloc.h b/src/sys/include/os/kalloc.h
index 143c4f9..aaaaa74 100644
--- a/src/sys/include/os/kalloc.h
+++ b/src/sys/include/os/kalloc.h
@@ -48,6 +48,14 @@
 void *kalloc(size_t sz);
 
 /*
+ * Reallocates memory pool created by `dynalloc()'
+ *
+ * @old_ptr: Pointer to old pool.
+ * @newsize: Size of new pool.
+ */
+void *krealloc(void *old_ptr, size_t newsize);
+
+/*
  * Free a chunk of memory given to by
  * `ptr'
  *
diff --git a/src/sys/include/os/vnode.h b/src/sys/include/os/vnode.h
index 1bef1e2..628ba68 100644
--- a/src/sys/include/os/vnode.h
+++ b/src/sys/include/os/vnode.h
@@ -32,6 +32,7 @@
 
 #include <sys/types.h>
 #include <sys/atomic.h>
+#include <sys/namei.h>
 
 /* Forward declarations */
 struct vnode;
@@ -83,12 +84,23 @@ struct vop_rw_data {
 };
 
 /*
+ * Arguments to create an entry within a
+ * filesystem
+ *
+ * @ndp: Path component to create
+ */
+struct vop_create_args {
+    struct nameidata *ndp;
+};
+
+/*
  * Represents operations that can be performed on
  * a specific vnode. These are implemented as callbacks
  */
 struct vop {
     int(*lookup)(struct vop_lookup_args *args);
     int(*reclaim)(struct vnode *vp, int flags);
+    int(*create)(struct vop_create_args *args);
     ssize_t(*write)(struct vop_rw_data *data);
     ssize_t(*read)(struct vop_rw_data *data);
 };
@@ -176,4 +188,16 @@ ssize_t vop_read(struct vnode *vp, char *data, off_t off, size_t len);
  */
 int vop_reclaim(struct vnode *vp, int flags);
 
+/*
+ * Create a node within a specific filesystem or
+ * directory
+ *
+ * @vp: Vnode of parent directory
+ * @ndp: Namei descriptor of path component
+ *
+ * Returns zero on success, otherwise a less than zero
+ * value on failure.
+ */
+int vop_create(struct vnode *vp, struct nameidata *ndp);
+
 #endif  /* !_OS_VNODE_H_ */
diff --git a/src/sys/include/sys/fcntl.h b/src/sys/include/sys/fcntl.h
index 30d2ec4..1ab3e71 100644
--- a/src/sys/include/sys/fcntl.h
+++ b/src/sys/include/sys/fcntl.h
@@ -43,6 +43,7 @@
 #define O_RDONLY    0x00
 #define O_RDWR      BIT(1)
 #define O_WRONLY    BIT(2)
+#define O_CREAT     BIT(3)
 
 /* File access mode flags */
 #define O_ACCMODE (O_RDWR | O_WRONLY)
diff --git a/src/sys/include/sys/mount.h b/src/sys/include/sys/mount.h
index 6d041ee..5f6fa6b 100644
--- a/src/sys/include/sys/mount.h
+++ b/src/sys/include/sys/mount.h
@@ -42,6 +42,7 @@
  */
 #define MOUNT_INITRD "initrd"   /* Initial ramdisk */
 #define MOUNT_DEVFS  "devfs"    /* Device filesystem */
+#define MOUNT_TMPFS  "tmpfs"    /* Temporary filesystem */
 
 /*
  * The mount system call
@@ -65,7 +66,8 @@ struct mount;
 
 /* Filesystem vfsops */
 extern struct vfsops g_omar_vfsops;
-extern struct vfsops g_devfs_vfops;
+extern struct vfsops g_devfs_vfsops;
+extern struct vfsops g_tmpfs_vfsops;
 
 /*
  * Represents a mountpoint
@@ -133,7 +135,6 @@ struct fs_info {
  */
 #define FS_ATTR_IMAGE BIT(0)    /* Is an image kind e.g., OSMORA OMAR */
 
-
 /*
  * VFS operations vector
  *
diff --git a/src/sys/include/sys/namei.h b/src/sys/include/sys/namei.h
index 58307b1..9e78a4c 100644
--- a/src/sys/include/sys/namei.h
+++ b/src/sys/include/sys/namei.h
@@ -32,6 +32,8 @@
 
 #include <os/vnode.h>
 
+#define NAMEI_CREATE BIT(0)     /* Create as we go */
+
 /*
  * Represents namei data that can be used for
  * looking up files