feat: (vfs) write_page and read_page file operations

[lunaix-os.git] / lunaix-os / kernel / fs / vfs.c

diff --git a/lunaix-os/kernel/fs/vfs.c b/lunaix-os/kernel/fs/vfs.c
index df374cdf41ad41fcf3cd15592a8419c1f22c4c3d..f5b650653cf20e57bac2b41b95e85093b565014b 100644 (file)
--- a/lunaix-os/kernel/fs/vfs.c
+++ b/lunaix-os/kernel/fs/vfs.c
@@ -112,10 +112,10 @@ inline struct hbucket*
 __dcache_hash(struct v_dnode* parent, uint32_t* hash)
 {
     uint32_t _hash = *hash;
 __dcache_hash(struct v_dnode* parent, uint32_t* hash)
 {
     uint32_t _hash = *hash;

-    // 与parent的指针值做加法，来减小碰撞的可能性。
-    _hash += (uint32_t)parent;

     // 确保低位更加随机
     _hash = _hash ^ (_hash >> VFS_HASHBITS);
     // 确保低位更加随机
     _hash = _hash ^ (_hash >> VFS_HASHBITS);

+    // 与parent的指针值做加法，来减小碰撞的可能性。
+    _hash += (uint32_t)parent;

     *hash = _hash;
     return &dnode_cache[_hash & VFS_HASH_MASK];
 }
     *hash = _hash;
     return &dnode_cache[_hash & VFS_HASH_MASK];
 }


@@ -300,6 +300,12 @@ vfs_close(struct v_file* file)
     return vfs_pclose(file, __current->pid);
 }
 
     return vfs_pclose(file, __current->pid);
 }
 

+void
+vfs_free_fd(struct v_fd* fd)
+{
+    cake_release(fd_pile, fd);
+}
+

 int
 vfs_fsync(struct v_file* file)
 {
 int
 vfs_fsync(struct v_file* file)
 {


@@ -570,7 +576,9 @@ vfs_do_open(const char* path, int options)
     struct v_inode* o_inode = ofile->inode;
 
     if (!errno && !(errno = vfs_alloc_fdslot(&fd))) {
     struct v_inode* o_inode = ofile->inode;
 
     if (!errno && !(errno = vfs_alloc_fdslot(&fd))) {

-        struct v_fd* fd_s = vzalloc(sizeof(*fd_s));
+        struct v_fd* fd_s = cake_grab(fd_pile);
+        memset(fd_s, 0, sizeof(*fd_s));
+

         ofile->f_pos = ofile->inode->fsize & -((options & FO_APPEND) != 0);
         fd_s->file = ofile;
         fd_s->flags = options;
         ofile->f_pos = ofile->inode->fsize & -((options & FO_APPEND) != 0);
         fd_s->file = ofile;
         fd_s->flags = options;


@@ -599,7 +607,7 @@ __DEFINE_LXSYSCALL1(int, close, int, fd)
         goto done_err;
     }
 
         goto done_err;
     }
 

-    vfree(fd_s);
+    cake_release(fd_pile, fd_s);

     __current->fdtable->fds[fd] = 0;
 
 done_err:
     __current->fdtable->fds[fd] = 0;
 
 done_err: