* Copyright (C) 2004, Christophe Saout <christophe@saout.de>
* Copyright (C) 2004-2007, Clemens Fruhwirth <clemens@endorphin.org>
* Copyright (C) 2009-2012, Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2009-2012, Milan Broz
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
/* interrupt handling */
volatile int quit = 0;
+static int signals_blocked = 0;
static void int_handler(int sig __attribute__((__unused__)))
{
quit++;
}
+int tools_signals_blocked(void)
+{
+ return signals_blocked;
+}
+
void set_int_block(int block)
{
sigset_t signals_open;
+ log_dbg("%slocking interruption on signal.", block ? "B" : "Unb");
+
sigemptyset(&signals_open);
sigaddset(&signals_open, SIGINT);
sigaddset(&signals_open, SIGTERM);
sigprocmask(block ? SIG_SETMASK : SIG_UNBLOCK, &signals_open, NULL);
+ signals_blocked = block;
+ quit = 0;
}
-void set_int_handler(void)
+void set_int_handler(int block)
{
struct sigaction sigaction_open;
+ log_dbg("Installing SIGINT/SIGTERM handler.");
memset(&sigaction_open, 0, sizeof(struct sigaction));
sigaction_open.sa_handler = int_handler;
sigaction(SIGINT, &sigaction_open, 0);
sigaction(SIGTERM, &sigaction_open, 0);
- set_int_block(0);
+ set_int_block(block);
+}
+
+void check_signal(int *r)
+{
+ if (quit && !*r)
+ *r = -EINTR;
}
__attribute__((format(printf, 5, 6)))
{
char *answer = NULL;
size_t size = 0;
- int r = 1;
+ int r = 1, block;
+
+ block = tools_signals_blocked();
+ if (block)
+ set_int_block(0);
if(isatty(STDIN_FILENO) && !opt_batch_mode) {
log_std("\nWARNING!\n========\n");
log_std("%s\n\nAre you sure? (Type uppercase yes): ", msg);
if(getline(&answer, &size, stdin) == -1) {
- perror("getline");
- free(answer);
- return 0;
- }
- if(strcmp(answer, "YES\n"))
r = 0;
- free(answer);
+ /* Aborted by signal */
+ if (!quit)
+ log_err(_("Error reading response from terminal.\n"));
+ else
+ log_dbg("Query interrupted on signal.");
+ } else if(strcmp(answer, "YES\n"))
+ r = 0;
}
+ if (block && !quit)
+ set_int_block(1);
+
+ free(answer);
return r;
}