remove dynamic allocation... also the previous stuff did not work correctly anymore.

inotify1.c

@@ -1,11 +1,12 @@
 #include <stdio.h>
 #include <errno.h>
-#include <string.h>
-#include <sys/ioctl.h>
+#include <limits.h>
 #include <sys/select.h>
 
 #include <inotify.h>
 
+#define BUF_LEN (10 * (sizeof(struct inotify_event) + NAME_MAX + 1))
+
 int
 main (int arg, char * argv [])
 {
@@ -35,39 +36,31 @@ main (int arg, char * argv [])
 
 	while (sel_ret = select (notify_d+1, &rfds, NULL, NULL, NULL)) 
 	{
-		char *                 in_ev   = NULL;
-		struct inotify_event * act_ev  = NULL;
-		size_t                 size    = 0;
-		size_t                 size_avail;
+		ssize_t numRead;
+		char buf[BUF_LEN] __attribute__ ((aligned(8)));
+		char * p;
+		struct inotify_event *event;
 		char * ev_name = NULL;
 
-		ioctl (notify_d, FIONREAD, &size_avail);
-		in_ev = (char *)malloc (size_avail);
-		if (in_ev == NULL)
+		numRead = read(notify_d, buf, BUF_LEN);
+
+		if (numRead == 0)
 		{
-			perror ("could not get memory for event list");
-			return 4;
+			perror("read() from inotify fd returned 0!");
+			return 3;
 		}
-		memset (in_ev, 0, size_avail);
 
-		while (size < size_avail)
-		{
-			int got = read (notify_d, in_ev + size, 
-			                size_avail - size);
-			if (got == 0)
+		if (numRead == -1)
 		{
-				perror ("notify FD was closed unexpectedly");
+			perror("read");
 			return 3;
 		}
-			size += got;
-		}
 
-		for (act_ev = (struct inotify_event *) in_ev; 
-		     (char *) act_ev < in_ev + size_avail && IN_NO_EVENT (act_ev);
-			  act_ev = IN_NEXT_EVENT (act_ev))
+		for (p = buf; p < buf + numRead; )
 		{
-			printf ("Watch Descriptor: %d\n", act_ev->wd);
-			switch (act_ev->mask)
+			event = (struct inotify_event *) p;
+			printf ("Watch Descriptor: %d\n", event->wd);
+			switch (event->mask)
 			{
 				case IN_ACCESS:
 					ev_name = "IN_ACCESS"; break;
@@ -94,16 +87,12 @@ main (int arg, char * argv [])
 				case IN_OPEN:
 					ev_name = "IN_OPEN"; break;
 			}
-			printf ("Mask of Events:   %s(%d)\n", ev_name, act_ev->mask);
-			printf ("Events Cookie:    %u\n", act_ev->cookie);
-			printf ("Length of name:   %u\n", act_ev->len);
-			printf ("Event Name:       %s\n", act_ev->name);
-		}
+			printf ("Mask of Events:   %s(%d)\n", ev_name, event->mask);
+			printf ("Events Cookie:    %u\n", event->cookie);
+			printf ("Length of name:   %u\n", event->len);
+			printf ("Event Name:       %s\n", event->name);
 
-		if (in_ev)
-		{
-			free (in_ev);
-			in_ev = NULL;
+			p += sizeof(struct inotify_event) + event->len;
 		}
 
 		puts ("---");