linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Jiri Slaby <jslaby@suse.cz>
To: gregkh@linuxfoundation.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
	Jiri Slaby <jslaby@suse.cz>
Subject: [PATCH 32/38] vt_ioctl: move io ioctls to a separate function
Date: Mon, 15 Jun 2020 09:49:04 +0200	[thread overview]
Message-ID: <20200615074910.19267-32-jslaby@suse.cz> (raw)
In-Reply-To: <20200615074910.19267-1-jslaby@suse.cz>

We create a new vt_io_ioctl here and move there all the IO ioctls.  This
makes vt_ioctl significantly smaller.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/tty/vt/vt_ioctl.c | 177 +++++++++++++++++++++-----------------
 1 file changed, 98 insertions(+), 79 deletions(-)

diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c
index 1b423bdc488e..978c33ad6619 100644
--- a/drivers/tty/vt/vt_ioctl.c
+++ b/drivers/tty/vt/vt_ioctl.c
@@ -539,6 +539,100 @@ static inline int do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud,
 	return 0;
 }
 
+static int vt_io_ioctl(struct vc_data *vc, unsigned int cmd, void __user *up,
+		bool perm)
+{
+	struct console_font_op op;	/* used in multiple places here */
+
+	switch (cmd) {
+	case PIO_FONT:
+		if (!perm)
+			return -EPERM;
+		op.op = KD_FONT_OP_SET;
+		op.flags = KD_FONT_FLAG_OLD | KD_FONT_FLAG_DONT_RECALC;	/* Compatibility */
+		op.width = 8;
+		op.height = 0;
+		op.charcount = 256;
+		op.data = up;
+		return con_font_op(vc_cons[fg_console].d, &op);
+
+	case GIO_FONT:
+		op.op = KD_FONT_OP_GET;
+		op.flags = KD_FONT_FLAG_OLD;
+		op.width = 8;
+		op.height = 32;
+		op.charcount = 256;
+		op.data = up;
+		return con_font_op(vc_cons[fg_console].d, &op);
+
+	case PIO_CMAP:
+                if (!perm)
+			return -EPERM;
+		return con_set_cmap(up);
+
+	case GIO_CMAP:
+                return con_get_cmap(up);
+
+	case PIO_FONTX:
+	case GIO_FONTX:
+		return do_fontx_ioctl(cmd, up, perm, &op);
+
+	case PIO_FONTRESET:
+		if (!perm)
+			return -EPERM;
+
+#ifdef BROKEN_GRAPHICS_PROGRAMS
+		/* With BROKEN_GRAPHICS_PROGRAMS defined, the default
+		   font is not saved. */
+		return -ENOSYS;
+#else
+		{
+		int ret;
+		op.op = KD_FONT_OP_SET_DEFAULT;
+		op.data = NULL;
+		ret = con_font_op(vc_cons[fg_console].d, &op);
+		if (ret)
+			return ret;
+		console_lock();
+		con_set_default_unimap(vc_cons[fg_console].d);
+		console_unlock();
+		break;
+		}
+#endif
+
+	case PIO_SCRNMAP:
+		if (!perm)
+			return -EPERM;
+		return con_set_trans_old(up);
+
+	case GIO_SCRNMAP:
+		return con_get_trans_old(up);
+
+	case PIO_UNISCRNMAP:
+		if (!perm)
+			return -EPERM;
+		return con_set_trans_new(up);
+
+	case GIO_UNISCRNMAP:
+		return con_get_trans_new(up);
+
+	case PIO_UNIMAPCLR:
+		if (!perm)
+			return -EPERM;
+		con_clear_unimap(vc);
+		break;
+
+	case PIO_UNIMAP:
+	case GIO_UNIMAP:
+		return do_unimap_ioctl(cmd, up, perm, vc);
+
+	default:
+		return -ENOIOCTLCMD;
+	}
+
+	return 0;
+}
+
 /* deallocate a single console, if possible (leave 0) */
 static int vt_disallocate(unsigned int vc_num)
 {
@@ -586,7 +680,6 @@ int vt_ioctl(struct tty_struct *tty,
 	     unsigned int cmd, unsigned long arg)
 {
 	struct vc_data *vc = tty->driver_data;
-	struct console_font_op op;	/* used in multiple places here */
 	void __user *up = (void __user *)arg;
 	int i, perm;
 	int ret;
@@ -603,6 +696,10 @@ int vt_ioctl(struct tty_struct *tty,
 	if (ret != -ENOIOCTLCMD)
 		return ret;
 
+	ret = vt_io_ioctl(vc, cmd, up, perm);
+	if (ret != -ENOIOCTLCMD)
+		return ret;
+
 	switch (cmd) {
 	case TIOCLINUX:
 		return tioclinux(tty, arg);
@@ -903,84 +1000,6 @@ int vt_ioctl(struct tty_struct *tty,
 		break;
 	}
 
-	case PIO_FONT:
-		if (!perm)
-			return -EPERM;
-		op.op = KD_FONT_OP_SET;
-		op.flags = KD_FONT_FLAG_OLD | KD_FONT_FLAG_DONT_RECALC;	/* Compatibility */
-		op.width = 8;
-		op.height = 0;
-		op.charcount = 256;
-		op.data = up;
-		return con_font_op(vc_cons[fg_console].d, &op);
-
-	case GIO_FONT:
-		op.op = KD_FONT_OP_GET;
-		op.flags = KD_FONT_FLAG_OLD;
-		op.width = 8;
-		op.height = 32;
-		op.charcount = 256;
-		op.data = up;
-		return con_font_op(vc_cons[fg_console].d, &op);
-
-	case PIO_CMAP:
-                if (!perm)
-			return -EPERM;
-		return con_set_cmap(up);
-
-	case GIO_CMAP:
-                return con_get_cmap(up);
-
-	case PIO_FONTX:
-	case GIO_FONTX:
-		return do_fontx_ioctl(cmd, up, perm, &op);
-
-	case PIO_FONTRESET:
-		if (!perm)
-			return -EPERM;
-
-#ifdef BROKEN_GRAPHICS_PROGRAMS
-		/* With BROKEN_GRAPHICS_PROGRAMS defined, the default
-		   font is not saved. */
-		return -ENOSYS;
-#else
-		op.op = KD_FONT_OP_SET_DEFAULT;
-		op.data = NULL;
-		ret = con_font_op(vc_cons[fg_console].d, &op);
-		if (ret)
-			return ret;
-		console_lock();
-		con_set_default_unimap(vc_cons[fg_console].d);
-		console_unlock();
-		break;
-#endif
-
-	case PIO_SCRNMAP:
-		if (!perm)
-			return -EPERM;
-		return con_set_trans_old(up);
-
-	case GIO_SCRNMAP:
-		return con_get_trans_old(up);
-
-	case PIO_UNISCRNMAP:
-		if (!perm)
-			return -EPERM;
-		return con_set_trans_new(up);
-
-	case GIO_UNISCRNMAP:
-		return con_get_trans_new(up);
-
-	case PIO_UNIMAPCLR:
-		if (!perm)
-			return -EPERM;
-		con_clear_unimap(vc);
-		break;
-
-	case PIO_UNIMAP:
-	case GIO_UNIMAP:
-		return do_unimap_ioctl(cmd, up, perm, vc);
-
 	case VT_LOCKSWITCH:
 		if (!capable(CAP_SYS_TTY_CONFIG))
 			return -EPERM;
-- 
2.27.0


  parent reply	other threads:[~2020-06-15  7:49 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-15  7:48 [PATCH 01/38] vc: separate state Jiri Slaby
2020-06-15  7:48 ` [PATCH 02/38] vt: introduce enum vc_intensity for intensity Jiri Slaby
2020-06-15  7:48 ` [PATCH 03/38] vc: switch state to bool Jiri Slaby
2020-06-15  7:48 ` [PATCH 04/38] vt: deduplicate setGx code Jiri Slaby
2020-06-15  7:48 ` [PATCH 05/38] vt: switch G0/1_charset to an array Jiri Slaby
2020-06-15  7:48 ` [PATCH 06/38] vt: convert vc_tab_stop to bitmap Jiri Slaby
2020-06-15  7:48 ` [PATCH 07/38] vt: remove 25 years stale comment Jiri Slaby
2020-06-15  7:48 ` [PATCH 08/38] vt: use tty_insert_flip_string in respond_string Jiri Slaby
2020-06-15  7:48 ` [PATCH 09/38] vt: get rid of VT10.ID macros Jiri Slaby
2020-06-15  7:48 ` [PATCH 10/38] vt: move vc_translate to vt.c and rename it Jiri Slaby
2020-06-15  7:48 ` [PATCH 11/38] vt: use modern types in do_con_write Jiri Slaby
2020-06-15  7:48 ` [PATCH 12/38] vt: separate unicode handling into vc_translate_unicode Jiri Slaby
2020-06-15  7:48 ` [PATCH 13/38] vt: rearrange vc_translate_unicode Jiri Slaby
2020-06-15  7:48 ` [PATCH 14/38] vt: extract attribute inversion to vc_invert_attr Jiri Slaby
2020-06-15  7:48 ` [PATCH 15/38] vt: move rescan_last_byte label earlier Jiri Slaby
2020-06-15  7:48 ` [PATCH 16/38] vc: move translation out of do_con_write Jiri Slaby
2020-06-15  7:48 ` [PATCH 17/38] vc: introduce struct vc_draw_region Jiri Slaby
2020-06-15  7:48 ` [PATCH 18/38] vc: extract detecting control characters from do_con_write Jiri Slaby
2020-06-15  7:48 ` [PATCH 19/38] vc: move normal char processing " Jiri Slaby
2020-06-15  7:48 ` [PATCH 20/38] vc: simplify condition in vc_con_write_normal Jiri Slaby
2020-06-15  7:48 ` [PATCH 21/38] vt: simplify vc_attr handling " Jiri Slaby
2020-06-15  7:48 ` [PATCH 22/38] vt: make tc write more obvious " Jiri Slaby
2020-06-15  7:48 ` [PATCH 23/38] vt: synchronize types and use min in csi_X Jiri Slaby
2020-06-15  7:48 ` [PATCH 24/38] vt: whitespace and paren cleanup in add_softcursor Jiri Slaby
2020-06-15  7:48 ` [PATCH 25/38] vt: redefine world of cursor macros Jiri Slaby
2020-06-15  7:48 ` [PATCH 26/38] vt: use newly defined CUR_* macros Jiri Slaby
2020-06-15 20:31   ` Helge Deller
2020-06-15  7:48 ` [PATCH 27/38] vt: remove superfluous parens in invert_screen and build_attr Jiri Slaby
2020-06-15  7:49 ` [PATCH 28/38] vt: simplify noncolor attributes in build_attr Jiri Slaby
2020-06-15  7:49 ` [PATCH 29/38] vt_ioctl: eliminate ret & breaks in vt_ioctl Jiri Slaby
2020-06-15  7:49 ` [PATCH 30/38] vt_ioctl: eliminate use of uival and ucval Jiri Slaby
2020-06-15  7:49 ` [PATCH 31/38] vt_ioctl: move K* ioctls to a separate function Jiri Slaby
2020-06-15  7:49 ` Jiri Slaby [this message]
2020-06-15  7:49 ` [PATCH 33/38] vt_ioctl: move vt_setactivate out of vt_ioctl Jiri Slaby
2020-06-15  7:49 ` [PATCH 34/38] vt_ioctl: move vt_reldisp " Jiri Slaby
2020-06-15  7:49 ` [PATCH 35/38] vt_ioctl: move vt_resizex " Jiri Slaby
2020-06-15  7:49 ` [PATCH 36/38] vt_ioctl: move vt_io_fontreset out of vt_io_ioctl Jiri Slaby
2020-06-15  7:49 ` [PATCH 37/38] vt_ioctl: move vt_kdsetmode out of vt_k_ioctl Jiri Slaby
2020-06-15  7:49 ` [PATCH 38/38] vt_ioctl: move perm checks level up Jiri Slaby

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200615074910.19267-32-jslaby@suse.cz \
    --to=jslaby@suse.cz \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-serial@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).