From fbcc3d9e458b8c3966560028d1f1f10ba4e74d37 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Wed, 15 Oct 2025 14:49:33 -0400
Subject: kern: filedesc: Add close() system call

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/os/os_filedes.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'src/sys/os/os_filedes.c')

diff --git a/src/sys/os/os_filedes.c b/src/sys/os/os_filedes.c
index 948bad2..95452af 100644
--- a/src/sys/os/os_filedes.c
+++ b/src/sys/os/os_filedes.c
@@ -197,6 +197,32 @@ fd_open(const char *path, mode_t mode)
     return fd->fdno;
 }
 
+int
+fd_close(int fd)
+{
+    struct filedesc *fdp;
+    struct proc *proc = proc_self();
+    struct vnode *vp;
+
+    if (fd < 0) {
+        return -EBADF;
+    }
+
+    if (proc == NULL) {
+        return -EIO;
+    }
+
+    if ((fdp = fd_get(proc, fd)) == NULL) {
+        return -EIO;
+    }
+
+    vp = fdp->vp;
+    proc->fdtab[fdp->fdno] = NULL;
+
+    kfree(fdp);
+    return vop_reclaim(vp, 0);
+}
+
 /*
  * Initialize file descriptor table
  */
-- 
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