mirror of
https://codeberg.org/kiss-community/repo
synced 2024-12-22 07:10:16 -07:00
62 lines
2.0 KiB
Diff
62 lines
2.0 KiB
Diff
From 63bb934c9e48d3ba1dc7f8001d423ea84b9a00c2 Mon Sep 17 00:00:00 2001
|
|
From: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
|
|
Date: Thu, 19 Jan 2023 17:18:18 +0100
|
|
Subject: [PATCH] lineedit: Handle SIGWINCH gracefully
|
|
|
|
Since 1.16.0 a resize of the terminal emulator resulted in ash printing
|
|
a new command line. This fixes the issue by retrying read_key() in
|
|
lineedit_read_key() on SIGWINCH, rendering reception of SIGWINCH
|
|
transparent to callers of read_line_input().
|
|
|
|
Fixes https://bugs.busybox.net/show_bug.cgi?id=15256
|
|
---
|
|
libbb/lineedit.c | 11 +++++++++--
|
|
1 file changed, 9 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
|
|
index d6b2e76ff..a47d9e508 100644
|
|
--- a/libbb/lineedit.c
|
|
+++ b/libbb/lineedit.c
|
|
@@ -2149,7 +2149,7 @@ static void cmdedit_setwidth(void)
|
|
redraw((new_y >= cmdedit_y ? new_y : cmdedit_y), command_len - cursor);
|
|
}
|
|
|
|
-static void win_changed(int nsig UNUSED_PARAM)
|
|
+static void win_changed(int nsig)
|
|
{
|
|
if (S.ok_to_redraw) {
|
|
/* We are in read_key(), safe to redraw immediately */
|
|
@@ -2157,6 +2157,7 @@ static void win_changed(int nsig UNUSED_PARAM)
|
|
cmdedit_setwidth();
|
|
fflush_all();
|
|
errno = sv_errno;
|
|
+ bb_got_signal = nsig;
|
|
} else {
|
|
/* Signal main loop that redraw is necessary */
|
|
S.SIGWINCH_count++;
|
|
@@ -2186,7 +2187,9 @@ static int lineedit_read_key(char *read_key_buffer, int timeout)
|
|
* Note: read_key sets errno to 0 on success.
|
|
*/
|
|
for (;;) {
|
|
- if ((state->flags & LI_INTERRUPTIBLE) && bb_got_signal) {
|
|
+ if ((state->flags & LI_INTERRUPTIBLE) && bb_got_signal
|
|
+ && (bb_got_signal != SIGWINCH)
|
|
+ ) {
|
|
errno = EINTR;
|
|
return -1;
|
|
}
|
|
@@ -2197,6 +2200,10 @@ static int lineedit_read_key(char *read_key_buffer, int timeout)
|
|
IF_FEATURE_EDITING_WINCH(S.ok_to_redraw = 0;)
|
|
if (errno != EINTR)
|
|
break;
|
|
+ if (bb_got_signal == SIGWINCH) {
|
|
+ bb_got_signal = 0;
|
|
+ continue;
|
|
+ }
|
|
if (state->flags & LI_INTERRUPTIBLE) {
|
|
/* LI_INTERRUPTIBLE bails out on EINTR,
|
|
* but nothing really guarantees that bb_got_signal
|
|
--
|
|
2.39.1
|
|
|