added basic inotify

1 files changed, 33 insertions, 1 deletions

diff --git a/utils.c b/utils.c
index 2620e6f..a057ca2 100644
--- a/utils.c
+++ b/utils.c
@@ -22,9 +22,10 @@
 #include "datatypes.h"
 
 #include <sys/un.h>
-#include <termios.h>
 #include <unistd.h>
 #include <errno.h>
+#include <fcntl.h>
+#include <sys/inotify.h>
 
 #include "log.h"
 
@@ -139,3 +140,34 @@ int nonblock_recvline(read_buffer_t* buffer, int fd, client_t* client_lst, optio
 
   return ret;
 }
+
+int create_inotify()
+{
+  int fd = inotify_init();
+  if(fd < 0) {
+    log_printf(ERROR, "error at inotify_init: %s", strerror(errno));
+    return -1;
+  }
+  
+  int fs_flags = fcntl(fd, F_GETFL);
+  if(fs_flags == -1) {
+    log_printf(ERROR, "inotify init failed (fcntl read flags error: %s)", strerror(errno));
+    return -1;
+  }
+  if(fcntl(fd, F_SETFL, fs_flags | O_NONBLOCK) == -1) {
+    log_printf(ERROR, "inotify init failed (fcntl write flags error: %s)", strerror(errno));
+    return -1;
+  }
+
+  int fd_flags = fcntl(fd, F_GETFD);
+  if(fd_flags == -1) {
+    log_printf(ERROR, "inotify init failed (fcntl read flags error: %s)", strerror(errno));
+    return -1;
+  }
+  if(fcntl(fd, F_SETFD, fd_flags | FD_CLOEXEC) == -1) {
+    log_printf(ERROR, "inotify init failed (fcntl write flags error: %s)", strerror(errno));
+    return -1;
+  }
+
+  return fd;
+}