initial checkin

+
+INCLUDES = -I. -I./include @INOTIFY_INCLUDES@
+
+bin_PROGRAMS   = inotify
+
+inotify_SOURCES = inotify1.c
+inotify_INCLUDES = inotify.h
+
+SUBDIRS = 
+

+#!/bin/sh
+
+aclocal
+libtoolize --copy
+autoheader
+automake --gnu --add-missing --copy
+autoconf

+AC_PREREQ(2.68)
+AC_INIT([checkout_files],
+	[0.0.1],
+	[georg@steffers.org])
+LT_INIT
+AM_INIT_AUTOMAKE
+AM_SILENT_RULES([no])
+AC_COPYRIGHT([Copyright © 2000 Georg Hopp])
+AC_REVISION([0.0.1])
+AC_CONFIG_SRCDIR([inotify1.c])
+AC_CONFIG_HEADER([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+
+AC_CANONICAL_HOST
+
+use_inotify="yes"
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_MAKE_SET
+
+# Checks for header files.
+AC_HEADER_STDC
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+
+# Checks for library functions.
+AC_CHECK_FUNCS([memset malloc free read ioctl syscall select perror printf])
+
+dnl We need to check if the right inotify version is accessible
+AC_MSG_CHECKING([whether inotify is to be used for filemonitoring])
+AC_ARG_ENABLE(inotify, 
+ [  --disable-inotify             disable inotify in the ecore_file module],
+ [
+	if test "$enableval" == "yes"; then  
+	  AC_MSG_RESULT([yes])
+	else
+	  AC_MSG_RESULT([no - but we need it])
+	  use_inotify="no"
+	fi
+ ], [
+	AC_MSG_RESULT([yes])
+ ]
+)
+
+dnl It's hard to find a good test on how to check the correct
+dnl inotify version. They changed the headers a lot.
+dnl in kernel 2.6.13 __NR_inotify_init was added to the defined syscalls
+dnl in asm/unistd.h and IN_MOVE_SELF was added to linux/inotify.h
+dnl so with this check you need a very new kernel and kernel-headers!
+dnl On my gentoo, /usr/include/asm and /usr/include/linux are no symlinks
+dnl into the current kernel tree....so i also try to find the includes
+dnl under /usr/src/linux or under /usr/include/linux-`uname -r`
+linux_rev=`uname -r`
+INOTIFY_INCLUDES=
+if test "x$use_inotify" = "xyes"; then
+ AC_MSG_CHECKING([for sufficient inotify includes])
+ AC_TRY_COMPILE(
+	[
+	  #include <asm/unistd.h>
+	  #include <linux/inotify.h>
+	],
+	[ int a = __NR_inotify_init; int b = IN_MOVE_SELF; ],
+	[
+	  AC_DEFINE(HAVE_INOTIFY, 1, [ File monitoring with Inotify ])
+	  an_inc=/usr/include
+	], 
+	[
+     AC_TRY_COMPILE(
+	    [
+	      #include "/usr/src/linux/include/asm/unistd.h"
+	      #include "/usr/src/linux/include/linux/inotify.h"
+	    ],
+	    [ int a = __NR_inotify_init; int b = IN_MOVE_SELF; ],
+	    [
+	      AC_DEFINE(HAVE_INOTIFY, 1, [ File monitoring with Inotify ])
+			AC_DEFINE(IN_KERNEL, 1, [ blablabla ])
+	      INOTIFY_INCLUDES=-I/usr/src/linux/include
+			an_inc=/usr/src/linux/include
+		 ],
+	    [
+         AC_TRY_COMPILE(
+	        [
+	          #include </usr/src/linux-$linux_rev/include/asm/unistd.h>
+	          #include </usr/src/linux-$linux_rev/include/linux/inotify.h>
+	        ],
+	        [ int a = __NR_inotify_init; int b = IN_MOVE_SELF; ],
+	        [
+	          AC_DEFINE(HAVE_INOTIFY, 1, [ File monitoring with Inotify ])
+				 AC_DEFINE(IN_KERNEL_UNAME, 1, [ blablabla ])
+	          INOTIFY_INCLUDES=-I/usr/src/linux-$linux_rev/include
+				 an_inc=/usr/src/linux-$linux_rev/include
+			  ],
+	        [
+	          use_inotify="no"
+				 an_inc="not found"
+		     ]
+			)
+		 ]
+	  )
+	]
+ )
+ AC_MSG_RESULT([$an_inc])
+ test "x$an_inc" == "xnot found" && exit
+else
+  exit
+fi
+
+AC_SUBST(INOTIFY_INCLUDES)
+
+AC_CONFIG_FILES([Makefile])
+
+AC_OUTPUT

+#ifndef INOTIFY_H
+#define INOTIFY_H
+
+#include <sys/syscall.h>
+#include <asm/unistd.h>
+#include <linux/inotify.h>
+
+#define IN_NEXT_EVENT(ev)   \
+	(struct inotify_event *) \
+	((char *)(ev) + sizeof (struct inotify_event) + (ev)->len)
+
+#define IN_NO_EVENT(ev)		((ev)->mask|IN_ALL_EVENTS) == IN_ALL_EVENTS
+
+
+static inline int inotify_init (void)
+{
+   return syscall (__NR_inotify_init);
+}
+
+static inline int inotify_add_watch (int fd, const char *name, __u32 mask)
+{
+   return syscall (__NR_inotify_add_watch, fd, name, mask);
+}
+
+static inline int inotify_rm_watch (int fd, __u32 wd)
+{
+   return syscall (__NR_inotify_rm_watch, fd, wd);
+}
+
+#endif /* INOTIFY_H */

+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/select.h>
+
+#include <inotify.h>
+
+int
+main (int arg, char * argv [])
+{
+	int    notify_d,
+	       watch_id;
+	fd_set rfds;
+	int    sel_ret;
+
+	FD_ZERO (&rfds);
+
+	notify_d = inotify_init ();
+	if (notify_d == -1)
+	{
+		perror ("could not init inotify");
+		return 1;
+	}
+
+	FD_SET  (notify_d, &rfds);
+
+	watch_id = inotify_add_watch (notify_d, argv[1], 
+	                              IN_CREATE|IN_OPEN|IN_MODIFY|IN_CLOSE);
+	if (watch_id == -1)
+	{
+		perror ("could not add watch");
+		return 2;
+	}
+
+	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;
+		char *                 ev_name = NULL;
+
+		ioctl (notify_d, FIONREAD, &size_avail);
+		in_ev = (char *)malloc (size_avail);
+		if (in_ev == NULL)
+		{
+			perror ("could not get memory for event list");
+			return 4;
+		}
+		memset (in_ev, 0, size_avail);
+
+		while (size < size_avail)
+		{
+			int got = read (notify_d, in_ev + size, 
+			                size_avail - size);
+			if (got == 0)
+			{
+				perror ("notify FD was closed unexpectedly");
+				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))
+		{
+			printf ("Watch Descriptor: %d\n", act_ev->wd);
+			switch (act_ev->mask)
+			{
+				case IN_ACCESS:
+					ev_name = "IN_ACCESS"; break;
+				case IN_ATTRIB:
+					ev_name = "IN_ATTRIB"; break;
+				case IN_CLOSE_WRITE:
+					ev_name = "IN_CLOSE_WRITE"; break;
+				case IN_CLOSE_NOWRITE:
+					ev_name = "IN_CLOSE_NOWRITE"; break;
+				case IN_CREATE:
+					ev_name = "IN_CREATE"; break;
+				case IN_DELETE:
+					ev_name = "IN_DELETE"; break;
+				case IN_DELETE_SELF:
+					ev_name = "IN_DELETE_SELF"; break;
+				case IN_MODIFY:
+					ev_name = "IN_MODIFY"; break;
+				case IN_MOVE_SELF:
+					ev_name = "IN_MOVE_SELF"; break;
+				case IN_MOVED_FROM:
+					ev_name = "IN_MOVED_FROM"; break;
+				case IN_MOVED_TO:
+					ev_name = "IN_MOVED_TO"; break;
+				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);
+		}
+
+		if (in_ev)
+		{
+			free (in_ev);
+			in_ev = NULL;
+		}
+
+		puts ("---");
+
+		FD_SET  (notify_d, &rfds);
+	}
+
+	return 0;
+}