From 1c055e55a242a33e574e48be530e06770a210dcd Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 19 Feb 2024 03:26:26 +0000
Subject: [PATCH] add r8169 read mac form eeprom
---
kernel/drivers/tty/vt/selection.c | 345 ++++++++++++++++++++++++++++++---------------------------
1 files changed, 182 insertions(+), 163 deletions(-)
diff --git a/kernel/drivers/tty/vt/selection.c b/kernel/drivers/tty/vt/selection.c
index 34a0e52..f245a5a 100644
--- a/kernel/drivers/tty/vt/selection.c
+++ b/kernel/drivers/tty/vt/selection.c
@@ -2,7 +2,9 @@
/*
* This module exports the functions:
*
- * 'int set_selection(struct tiocl_selection __user *, struct tty_struct *)'
+ * 'int set_selection_user(struct tiocl_selection __user *,
+ * struct tty_struct *)'
+ * 'int set_selection_kernel(struct tiocl_selection *, struct tty_struct *)'
* 'void clear_selection(void)'
* 'int paste_selection(struct tty_struct *)'
* 'int sel_loadlut(char __user *)'
@@ -33,18 +35,18 @@
/* Don't take this from <ctype.h>: 011-015 on the screen aren't spaces */
#define isspace(c) ((c) == ' ')
-extern void poke_blanked_console(void);
-
/* FIXME: all this needs locking */
-/* Variables for selection control. */
-/* Use a dynamic buffer, instead of static (Dec 1994) */
-struct vc_data *sel_cons; /* must not be deallocated */
-static int use_unicode;
-static volatile int sel_start = -1; /* cleared by clear_selection */
-static int sel_end;
-static int sel_buffer_lth;
-static char *sel_buffer;
-static DEFINE_MUTEX(sel_lock);
+static struct vc_selection {
+ struct mutex lock;
+ struct vc_data *cons; /* must not be deallocated */
+ char *buffer;
+ unsigned int buf_len;
+ volatile int start; /* cleared by clear_selection */
+ int end;
+} vc_sel = {
+ .lock = __MUTEX_INITIALIZER(vc_sel.lock),
+ .start = -1,
+};
/* clear_selection, highlight and highlight_pointer can be called
from interrupt (via scrollback/front) */
@@ -52,22 +54,21 @@
/* set reverse video on characters s-e of console with selection. */
static inline void highlight(const int s, const int e)
{
- invert_screen(sel_cons, s, e-s+2, 1);
+ invert_screen(vc_sel.cons, s, e-s+2, true);
}
/* use complementary color to show the pointer */
static inline void highlight_pointer(const int where)
{
- complement_pos(sel_cons, where);
+ complement_pos(vc_sel.cons, where);
}
static u32
-sel_pos(int n)
+sel_pos(int n, bool unicode)
{
- if (use_unicode)
- return screen_glyph_unicode(sel_cons, n / 2);
- return inverse_translate(sel_cons, screen_glyph(sel_cons, n),
- 0);
+ if (unicode)
+ return screen_glyph_unicode(vc_sel.cons, n / 2);
+ return inverse_translate(vc_sel.cons, screen_glyph(vc_sel.cons, n), 0);
}
/**
@@ -79,15 +80,16 @@
void clear_selection(void)
{
highlight_pointer(-1); /* hide the pointer */
- if (sel_start != -1) {
- highlight(sel_start, sel_end);
- sel_start = -1;
+ if (vc_sel.start != -1) {
+ highlight(vc_sel.start, vc_sel.end);
+ vc_sel.start = -1;
}
}
+EXPORT_SYMBOL_GPL(clear_selection);
bool vc_is_sel(struct vc_data *vc)
{
- return vc == sel_cons;
+ return vc == vc_sel.cons;
}
/*
@@ -163,7 +165,7 @@
}
/**
- * set_selection - set the current selection.
+ * set_selection_user - set the current selection.
* @sel: user selection info
* @tty: the console tty
*
@@ -172,153 +174,44 @@
* The entire selection process is managed under the console_lock. It's
* a lot under the lock but its hardly a performance path
*/
-static int __set_selection(const struct tiocl_selection __user *sel, struct tty_struct *tty)
+int set_selection_user(const struct tiocl_selection __user *sel,
+ struct tty_struct *tty)
{
- struct vc_data *vc = vc_cons[fg_console].d;
- int new_sel_start, new_sel_end, spc;
struct tiocl_selection v;
- char *bp, *obp;
- int i, ps, pe, multiplier;
- u32 c;
- int mode, ret = 0;
- poke_blanked_console();
if (copy_from_user(&v, sel, sizeof(*sel)))
return -EFAULT;
- v.xs = min_t(u16, v.xs - 1, vc->vc_cols - 1);
- v.ys = min_t(u16, v.ys - 1, vc->vc_rows - 1);
- v.xe = min_t(u16, v.xe - 1, vc->vc_cols - 1);
- v.ye = min_t(u16, v.ye - 1, vc->vc_rows - 1);
- ps = v.ys * vc->vc_size_row + (v.xs << 1);
- pe = v.ye * vc->vc_size_row + (v.xe << 1);
+ return set_selection_kernel(&v, tty);
+}
- if (v.sel_mode == TIOCL_SELCLEAR) {
- /* useful for screendump without selection highlights */
- clear_selection();
- return 0;
- }
-
- if (mouse_reporting() && (v.sel_mode & TIOCL_SELMOUSEREPORT)) {
- mouse_report(tty, v.sel_mode & TIOCL_SELBUTTONMASK, v.xs, v.ys);
- return 0;
- }
-
- if (ps > pe) /* make sel_start <= sel_end */
- swap(ps, pe);
-
- if (sel_cons != vc_cons[fg_console].d) {
- clear_selection();
- sel_cons = vc_cons[fg_console].d;
- }
- mode = vt_do_kdgkbmode(fg_console);
- if (mode == K_UNICODE)
- use_unicode = 1;
- else
- use_unicode = 0;
-
- switch (v.sel_mode)
- {
- case TIOCL_SELCHAR: /* character-by-character selection */
- new_sel_start = ps;
- new_sel_end = pe;
- break;
- case TIOCL_SELWORD: /* word-by-word selection */
- spc = isspace(sel_pos(ps));
- for (new_sel_start = ps; ; ps -= 2)
- {
- if ((spc && !isspace(sel_pos(ps))) ||
- (!spc && !inword(sel_pos(ps))))
- break;
- new_sel_start = ps;
- if (!(ps % vc->vc_size_row))
- break;
- }
- spc = isspace(sel_pos(pe));
- for (new_sel_end = pe; ; pe += 2)
- {
- if ((spc && !isspace(sel_pos(pe))) ||
- (!spc && !inword(sel_pos(pe))))
- break;
- new_sel_end = pe;
- if (!((pe + 2) % vc->vc_size_row))
- break;
- }
- break;
- case TIOCL_SELLINE: /* line-by-line selection */
- new_sel_start = ps - ps % vc->vc_size_row;
- new_sel_end = pe + vc->vc_size_row
- - pe % vc->vc_size_row - 2;
- break;
- case TIOCL_SELPOINTER:
- highlight_pointer(pe);
- return 0;
- default:
- return -EINVAL;
- }
-
- /* remove the pointer */
- highlight_pointer(-1);
-
- /* select to end of line if on trailing space */
- if (new_sel_end > new_sel_start &&
- !atedge(new_sel_end, vc->vc_size_row) &&
- isspace(sel_pos(new_sel_end))) {
- for (pe = new_sel_end + 2; ; pe += 2)
- if (!isspace(sel_pos(pe)) ||
- atedge(pe, vc->vc_size_row))
- break;
- if (isspace(sel_pos(pe)))
- new_sel_end = pe;
- }
- if (sel_start == -1) /* no current selection */
- highlight(new_sel_start, new_sel_end);
- else if (new_sel_start == sel_start)
- {
- if (new_sel_end == sel_end) /* no action required */
- return 0;
- else if (new_sel_end > sel_end) /* extend to right */
- highlight(sel_end + 2, new_sel_end);
- else /* contract from right */
- highlight(new_sel_end + 2, sel_end);
- }
- else if (new_sel_end == sel_end)
- {
- if (new_sel_start < sel_start) /* extend to left */
- highlight(new_sel_start, sel_start - 2);
- else /* contract from left */
- highlight(sel_start, new_sel_start - 2);
- }
- else /* some other case; start selection from scratch */
- {
- clear_selection();
- highlight(new_sel_start, new_sel_end);
- }
- sel_start = new_sel_start;
- sel_end = new_sel_end;
+static int vc_selection_store_chars(struct vc_data *vc, bool unicode)
+{
+ char *bp, *obp;
+ unsigned int i;
/* Allocate a new buffer before freeing the old one ... */
- multiplier = use_unicode ? 4 : 1; /* chars can take up to 4 bytes */
- bp = kmalloc_array((sel_end - sel_start) / 2 + 1, multiplier,
- GFP_KERNEL);
+ /* chars can take up to 4 bytes with unicode */
+ bp = kmalloc_array((vc_sel.end - vc_sel.start) / 2 + 1, unicode ? 4 : 1,
+ GFP_KERNEL | __GFP_NOWARN);
if (!bp) {
printk(KERN_WARNING "selection: kmalloc() failed\n");
clear_selection();
return -ENOMEM;
}
- kfree(sel_buffer);
- sel_buffer = bp;
+ kfree(vc_sel.buffer);
+ vc_sel.buffer = bp;
obp = bp;
- for (i = sel_start; i <= sel_end; i += 2) {
- c = sel_pos(i);
- if (use_unicode)
+ for (i = vc_sel.start; i <= vc_sel.end; i += 2) {
+ u32 c = sel_pos(i, unicode);
+ if (unicode)
bp += store_utf8(c, bp);
else
*bp++ = c;
if (!isspace(c))
obp = bp;
- if (! ((i + 2) % vc->vc_size_row)) {
+ if (!((i + 2) % vc->vc_size_row)) {
/* strip trailing blanks from line and add newline,
unless non-space at end of line. */
if (obp != bp) {
@@ -328,23 +221,148 @@
obp = bp;
}
}
- sel_buffer_lth = bp - sel_buffer;
+ vc_sel.buf_len = bp - vc_sel.buffer;
- return ret;
+ return 0;
}
-int set_selection(const struct tiocl_selection __user *v, struct tty_struct *tty)
+static int vc_do_selection(struct vc_data *vc, unsigned short mode, int ps,
+ int pe)
+{
+ int new_sel_start, new_sel_end, spc;
+ bool unicode = vt_do_kdgkbmode(fg_console) == K_UNICODE;
+
+ switch (mode) {
+ case TIOCL_SELCHAR: /* character-by-character selection */
+ new_sel_start = ps;
+ new_sel_end = pe;
+ break;
+ case TIOCL_SELWORD: /* word-by-word selection */
+ spc = isspace(sel_pos(ps, unicode));
+ for (new_sel_start = ps; ; ps -= 2) {
+ if ((spc && !isspace(sel_pos(ps, unicode))) ||
+ (!spc && !inword(sel_pos(ps, unicode))))
+ break;
+ new_sel_start = ps;
+ if (!(ps % vc->vc_size_row))
+ break;
+ }
+
+ spc = isspace(sel_pos(pe, unicode));
+ for (new_sel_end = pe; ; pe += 2) {
+ if ((spc && !isspace(sel_pos(pe, unicode))) ||
+ (!spc && !inword(sel_pos(pe, unicode))))
+ break;
+ new_sel_end = pe;
+ if (!((pe + 2) % vc->vc_size_row))
+ break;
+ }
+ break;
+ case TIOCL_SELLINE: /* line-by-line selection */
+ new_sel_start = rounddown(ps, vc->vc_size_row);
+ new_sel_end = rounddown(pe, vc->vc_size_row) +
+ vc->vc_size_row - 2;
+ break;
+ case TIOCL_SELPOINTER:
+ highlight_pointer(pe);
+ return 0;
+ default:
+ return -EINVAL;
+ }
+
+ /* remove the pointer */
+ highlight_pointer(-1);
+
+ /* select to end of line if on trailing space */
+ if (new_sel_end > new_sel_start &&
+ !atedge(new_sel_end, vc->vc_size_row) &&
+ isspace(sel_pos(new_sel_end, unicode))) {
+ for (pe = new_sel_end + 2; ; pe += 2)
+ if (!isspace(sel_pos(pe, unicode)) ||
+ atedge(pe, vc->vc_size_row))
+ break;
+ if (isspace(sel_pos(pe, unicode)))
+ new_sel_end = pe;
+ }
+ if (vc_sel.start == -1) /* no current selection */
+ highlight(new_sel_start, new_sel_end);
+ else if (new_sel_start == vc_sel.start)
+ {
+ if (new_sel_end == vc_sel.end) /* no action required */
+ return 0;
+ else if (new_sel_end > vc_sel.end) /* extend to right */
+ highlight(vc_sel.end + 2, new_sel_end);
+ else /* contract from right */
+ highlight(new_sel_end + 2, vc_sel.end);
+ }
+ else if (new_sel_end == vc_sel.end)
+ {
+ if (new_sel_start < vc_sel.start) /* extend to left */
+ highlight(new_sel_start, vc_sel.start - 2);
+ else /* contract from left */
+ highlight(vc_sel.start, new_sel_start - 2);
+ }
+ else /* some other case; start selection from scratch */
+ {
+ clear_selection();
+ highlight(new_sel_start, new_sel_end);
+ }
+ vc_sel.start = new_sel_start;
+ vc_sel.end = new_sel_end;
+
+ return vc_selection_store_chars(vc, unicode);
+}
+
+static int vc_selection(struct vc_data *vc, struct tiocl_selection *v,
+ struct tty_struct *tty)
+{
+ int ps, pe;
+
+ poke_blanked_console();
+
+ if (v->sel_mode == TIOCL_SELCLEAR) {
+ /* useful for screendump without selection highlights */
+ clear_selection();
+ return 0;
+ }
+
+ v->xs = min_t(u16, v->xs - 1, vc->vc_cols - 1);
+ v->ys = min_t(u16, v->ys - 1, vc->vc_rows - 1);
+ v->xe = min_t(u16, v->xe - 1, vc->vc_cols - 1);
+ v->ye = min_t(u16, v->ye - 1, vc->vc_rows - 1);
+
+ if (mouse_reporting() && (v->sel_mode & TIOCL_SELMOUSEREPORT)) {
+ mouse_report(tty, v->sel_mode & TIOCL_SELBUTTONMASK, v->xs,
+ v->ys);
+ return 0;
+ }
+
+ ps = v->ys * vc->vc_size_row + (v->xs << 1);
+ pe = v->ye * vc->vc_size_row + (v->xe << 1);
+ if (ps > pe) /* make vc_sel.start <= vc_sel.end */
+ swap(ps, pe);
+
+ if (vc_sel.cons != vc) {
+ clear_selection();
+ vc_sel.cons = vc;
+ }
+
+ return vc_do_selection(vc, v->sel_mode, ps, pe);
+}
+
+int set_selection_kernel(struct tiocl_selection *v, struct tty_struct *tty)
{
int ret;
- mutex_lock(&sel_lock);
+ mutex_lock(&vc_sel.lock);
console_lock();
- ret = __set_selection(v, tty);
+ ret = vc_selection(vc_cons[fg_console].d, v, tty);
console_unlock();
- mutex_unlock(&sel_lock);
+ mutex_unlock(&vc_sel.lock);
return ret;
}
+EXPORT_SYMBOL_GPL(set_selection_kernel);
/* Insert the contents of the selection buffer into the
* queue of the tty associated with the current console.
@@ -372,26 +390,26 @@
tty_buffer_lock_exclusive(&vc->port);
add_wait_queue(&vc->paste_wait, &wait);
- mutex_lock(&sel_lock);
- while (sel_buffer && sel_buffer_lth > pasted) {
+ mutex_lock(&vc_sel.lock);
+ while (vc_sel.buffer && vc_sel.buf_len > pasted) {
set_current_state(TASK_INTERRUPTIBLE);
if (signal_pending(current)) {
ret = -EINTR;
break;
}
if (tty_throttled(tty)) {
- mutex_unlock(&sel_lock);
+ mutex_unlock(&vc_sel.lock);
schedule();
- mutex_lock(&sel_lock);
+ mutex_lock(&vc_sel.lock);
continue;
}
__set_current_state(TASK_RUNNING);
- count = sel_buffer_lth - pasted;
- count = tty_ldisc_receive_buf(ld, sel_buffer + pasted, NULL,
+ count = vc_sel.buf_len - pasted;
+ count = tty_ldisc_receive_buf(ld, vc_sel.buffer + pasted, NULL,
count);
pasted += count;
}
- mutex_unlock(&sel_lock);
+ mutex_unlock(&vc_sel.lock);
remove_wait_queue(&vc->paste_wait, &wait);
__set_current_state(TASK_RUNNING);
@@ -399,3 +417,4 @@
tty_ldisc_deref(ld);
return ret;
}
+EXPORT_SYMBOL_GPL(paste_selection);
--
Gitblit v1.6.2