Move cursor to the end of the screen at the SIGINT

It requires exposing 'move cursor to the end' function in a pacman
header file. We use it as a chance to make naming of the cursor management
functions more consistent.

Note that there is still possibility of a race condition in the cursor
update logic. 'update cursor index variable' and 'send ASCII control
symbols to console' is not an atomic operation. So if an SIGINT is
received between these two action then cursor position is going to be
screwed.

Fixes FS#67973

Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/pacman/sighandler.c b/src/pacman/sighandler.c
index fc4ea766..ff9c6ac4 100644
--- a/src/pacman/sighandler.c
+++ b/src/pacman/sighandler.c
@@ -53,6 +53,8 @@ static void _reset_handler(int signum)
  */
 static void soft_interrupt_handler(int signum)
 {
+	console_cursor_move_end();
+
 	if(signum == SIGINT) {
 		const char msg[] = "\nInterrupt signal received\n";
 		xwrite(STDERR_FILENO, msg, ARRAYSIZE(msg) - 1);
@@ -96,6 +98,7 @@ static void segv_handler(int signum)
 	sigset_t segvset;
 	const char msg[] = "\nerror: segmentation fault\n"
 		"Please submit a full bug report with --debug if appropriate.\n";
+	console_cursor_move_end();
 	xwrite(STDERR_FILENO, msg, sizeof(msg) - 1);
 	xwrite(STDOUT_FILENO, CURSOR_SHOW_ANSICODE,
 		sizeof(CURSOR_SHOW_ANSICODE) - 1);