apps/Makefile

@@ -1,4 +1,4 @@
-APPS := init sh uname uptime hello ps ls args cat stat su session date mkdir screen
+APPS := init sh uname uptime hello ps ls args cat stat su session date mkdir
 
 APPS_DIR := $(LUNA_ROOT)/apps
 APPS_SRC := $(APPS_DIR)/src

apps/src/screen.c

@@ -1,32 +0,0 @@
-#include <unistd.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <stdio.h>
-
-int main()
-{
-    int fd = open("/dev/fb0", O_WRONLY | O_CLOEXEC);
-    if(fd < 0)
-    {
-        perror("open");
-        return 1;
-    }
-
-    int fb_width = ioctl(fd, FB_GET_WIDTH);
-    if(fb_width < 0)
-    {
-        perror("ioctl(FB_GET_WIDTH)");
-        return 1;
-    }
-
-    int fb_height = ioctl(fd, FB_GET_HEIGHT);
-    if(fb_height < 0)
-    {
-        perror("ioctl(FB_GET_HEIGHT)");
-        return 1;
-    }
-
-    printf("Your screen is %dx%d\n", fb_width, fb_height);
-
-    close(fd);
-}

kernel/include/fs/FileDescriptor.h

@@ -34,8 +34,6 @@ struct Descriptor
 
     uintptr_t mmap(uintptr_t addr, size_t size, int prot, off_t offset);
 
-    long ioctl(int cmd, uintptr_t arg);
-
     void open(VFS::Node* node, bool can_read, bool can_write, bool able_to_block, bool close_on_exec);
 
     int seek(long offset);

kernel/include/fs/VFS.h

@@ -24,7 +24,6 @@ namespace VFS
     typedef int (*node_block)(Node*);
     typedef Node* (*node_readdir)(Node*, long);
     typedef uintptr_t (*node_mmap)(Node*, uintptr_t, size_t, int, off_t);
-    typedef long (*node_ioctl)(Node*, int, uintptr_t);
 
     struct Node
     {
@@ -48,7 +47,6 @@ namespace VFS
         node_write write_func;
         node_block block_func;
         node_mmap mmap_func;
-        node_ioctl ioctl_func;
         Node* link;
     };
 

kernel/include/fs/devices/Framebuffer.h

@@ -8,6 +8,4 @@ namespace FramebufferDevice
     ssize_t write(VFS::Node* node, size_t offset, size_t size, const char* buffer);
 
     uintptr_t mmap(VFS::Node* node, uintptr_t addr, size_t size, int prot, off_t offset);
-
-    long ioctl(VFS::Node* node, int cmd, uintptr_t arg);
 }

kernel/include/sys/Syscall.h

@@ -30,7 +30,6 @@
 #define SYS_setuid 24
 #define SYS_setgid 25
 #define SYS_umask 26
-#define SYS_ioctl 27
 
 struct stat;
 struct pstat;
@@ -69,4 +68,3 @@ void sys_dup2(Context* context, int fd, int fd2);
 void sys_setuid(Context* context, int new_uid, int new_euid);
 void sys_setgid(Context* context, int new_gid, int new_egid);
 void sys_umask(Context* context, mode_t cmask);
-void sys_ioctl(Context* context, int fd, int request, uintptr_t arg);

kernel/src/fs/FileDescriptor.cpp

@@ -45,12 +45,6 @@ uintptr_t Descriptor::mmap(uintptr_t addr, size_t size, int prot, off_t offset)
     return m_node->mmap_func(m_node, addr, size, prot, offset);
 }
 
-long Descriptor::ioctl(int cmd, uintptr_t arg)
-{
-    if(!m_node->ioctl_func) return MAP_FAIL(ENOTSUP);
-    return m_node->ioctl_func(m_node, cmd, arg);
-}
-
 int Descriptor::seek(long offset)
 {
     if (m_node->type == VFS_FILE && (uint64_t)offset > m_node->length)

kernel/src/fs/devices/Framebuffer.cpp

@@ -20,7 +20,6 @@ VFS::Node* FramebufferDevice::create_new(const char* devname)
     VFS::Node* dev = new VFS::Node;
     dev->write_func = FramebufferDevice::write;
     dev->mmap_func = FramebufferDevice::mmap;
-    dev->ioctl_func = FramebufferDevice::ioctl;
     dev->inode = 0;
     dev->length = 0;
     dev->type = VFS_DEVICE;
@@ -58,17 +57,3 @@ ssize_t FramebufferDevice::write(VFS::Node* node, size_t offset, size_t size, co
     memcpy(fb + offset, buffer, size);
     return (ssize_t)size;
 }
-
-#define FB_GET_WIDTH 0
-#define FB_GET_HEIGHT 1
-
-long FramebufferDevice::ioctl(VFS::Node* node, int cmd, uintptr_t)
-{
-    if (!node) return -1;
-    switch(cmd)
-    {
-        case FB_GET_WIDTH: return (long)bootboot.fb_width;
-        case FB_GET_HEIGHT: return (long)bootboot.fb_height;
-        default: return -EINVAL;
-    }
-}

kernel/src/sys/Syscall.cpp

@@ -40,7 +40,6 @@ void Syscall::entry(Context* context)
     case SYS_setuid: sys_setuid(context, (int)context->rdi, (int)context->rsi); break;
     case SYS_setgid: sys_setgid(context, (int)context->rdi, (int)context->rsi); break;
     case SYS_umask: sys_umask(context, (mode_t)context->rdi); break;
-    case SYS_ioctl: sys_ioctl(context, (int)context->rdi, (int)context->rsi, (uintptr_t)context->rdx); break;
     default: context->rax = -ENOSYS; break;
     }
     VMM::exit_syscall_context();

kernel/src/sys/stdio.cpp

@@ -358,7 +358,12 @@ void sys_dup2(Context* context, int fd, int fd2)
         context->rax = -err;
         return;
     }
-    Descriptor* file2 = Scheduler::current_task()->descriptor_from_fd(fd2, err); // FIXME: This will return EBADF if fd2 is not open, but we want to replace it with fd1 if it is not open.
+    if (!file1->is_open())
+    {
+        context->rax = -EBADF;
+        return;
+    }
+    Descriptor* file2 = Scheduler::current_task()->descriptor_from_fd(fd2, err);
     if (!file2)
     {
         context->rax = -err;
@@ -376,16 +381,3 @@ void sys_umask(Context* context, mode_t cmask)
     context->rax = current_task->umask;
     current_task->umask = cmask;
 }
-
-void sys_ioctl(Context* context, int fd, int cmd, uintptr_t arg)
-{
-    int err;
-    Descriptor* file = Scheduler::current_task()->descriptor_from_fd(fd, err);
-    if (!file)
-    {
-        context->rax = -err;
-        return;
-    }
-    kinfoln("ioctl(): fd %d, cmd %d, arg %lu", fd, cmd, arg);
-    context->rax = file->ioctl(cmd, arg);
-}

libs/libc/include/sys/ioctl.h

@@ -1,23 +0,0 @@
-#ifndef _SYS_IOCTL_H
-#define _SYS_IOCTL_H
-
-#include <sys/types.h>
-
-/* Get the width of a framebuffer device. */
-#define FB_GET_WIDTH 0
-/* Get the height of a framebuffer device. */
-#define FB_GET_HEIGHT 1
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-    /* Perform an arbitrary operation on an open file descriptor. Many operations are device-specific. */
-    int ioctl(int fd, int cmd, ...);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif

libs/libc/include/sys/syscall.h

@@ -28,6 +28,5 @@
 #define SYS_setuid 24
 #define SYS_setgid 25
 #define SYS_umask 26
-#define SYS_ioctl 27
 
 #endif

libs/libc/src/sys/ioctl.cpp

@@ -1,17 +0,0 @@
-#include <luna/syscall.h>
-#include <sys/ioctl.h>
-#include <sys/syscall.h>
-#include <stdarg.h>
-#include <stdint.h>
-
-extern "C"
-{
-    int ioctl(int fd, int cmd, ...)
-    {
-        va_list ap;
-        va_start(ap, cmd);
-        long result = __lc_fast_syscall3(SYS_ioctl, fd, cmd, va_arg(ap, uintptr_t));
-        va_end(ap);
-        return (int)result;
-    }
-}

libs/libc/src/syscall.cpp

@@ -41,7 +41,6 @@ extern "C" long syscall(long number, ...)
     case SYS_seek:
     case SYS_write:
     case SYS_read:
-    case SYS_ioctl:
     case SYS_mprotect:
     case SYS_waitpid: {
         arg arg0 = va_arg(ap, arg);