1 files changed, 30 insertions, 0 deletions
diff --git a/semestr-5/so/lista2/signals.c b/semestr-5/so/lista2/signals.c
new file mode 100644
index 0000000..a7593bc
--- /dev/null
+++ b/semestr-5/so/lista2/signals.c
@@ -0,0 +1,30 @@
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <errno.h>
+
+void sig_handler(int signum) {
+  char text[100];
+  sprintf(text, "[%d] Hello, I'm a signal handler :)\n", getpid());
+  write(STDOUT_FILENO, text, strlen(text));
+}
+
+int main() {
+  signal(SIGUSR1, sig_handler);
+  printf("Parent: [%d]\n", getpid());
+  fflush(stdout);
+  if (fork() == 0) {
+    printf("Child: [%d]\n", getpid());
+    // while(1) {}
+    if (execl("./echo-my", "echo-my", NULL) < 0) {
+      fprintf(stderr, "Exec error: %s\n", strerror(errno));
+      exit(0);
+    }
+  }
+
+  int result;
+  wait(&result);
+}