1 files changed, 15 insertions, 0 deletions
diff --git a/src/libmain/shared.cc b/src/libmain/shared.cc
index 24bedb3fb63b..17d4dda6703a 100644
--- a/src/libmain/shared.cc
+++ b/src/libmain/shared.cc
@@ -12,6 +12,12 @@ extern "C" {
 #include "config.h"
 
 
+void sigintHandler(int signo)
+{
+    _isInterrupted = 1;
+}
+
+
 /* Initialize and reorder arguments, then call the actual argument
    processor. */
 static void initAndRun(int argc, char * * argv)
@@ -23,6 +29,15 @@ static void initAndRun(int argc, char * * argv)
     nixStateDir = (string) NIX_STATE_DIR;
     nixDBPath = (string) NIX_STATE_DIR + "/db";
 
+    /* Catch SIGINT. */
+    struct sigaction act, oact;
+    act.sa_handler = sigintHandler;
+    sigfillset(&act.sa_mask);
+    act.sa_flags = 0;
+    if (sigaction(SIGINT, &act, &oact))
+        throw SysError("installing handler for SIGINT");
+    printMsg(lvlError, "SIG HANDLER INSTALLED");
+
     /* Put the arguments in a vector. */
     Strings args, remaining;
     while (argc--) args.push_back(*argv++);