From: Randy Dunlap <randy.dunlap@oracle.com>
Make dnotify_test.c source file and add it to Makefile so that
bitrot can be prevented.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
cc: Stephen Rothwell <sfr@canb.auug.org.au>
---
Documentation/filesystems/00-INDEX | 2 +
Documentation/filesystems/Makefile | 2 -
Documentation/filesystems/dnotify.txt | 36 -------------------------------
Documentation/filesystems/dnotify_test.c | 34 +++++++++++++++++++++++++++++
4 files changed, 38 insertions(+), 36 deletions(-)
--- lin2627-rc3g4-kerndoc.orig/Documentation/filesystems/Makefile
+++ lin2627-rc3g4-kerndoc/Documentation/filesystems/Makefile
@@ -2,7 +2,7 @@
obj- := dummy.o
# List of programs to build
-hostprogs-y := smount
+hostprogs-y := smount dnotify_test
# Tell kbuild to always build the programs
always := $(hostprogs-y)
--- lin2627-rc3g4-kerndoc.orig/Documentation/filesystems/dnotify.txt
+++ lin2627-rc3g4-kerndoc/Documentation/filesystems/dnotify.txt
@@ -62,38 +62,4 @@ disabled, fcntl(fd, F_NOTIFY, ...) will
Example
-------
-
- #define _GNU_SOURCE /* needed to get the defines */
- #include <fcntl.h> /* in glibc 2.2 this has the needed
- values defined */
- #include <signal.h>
- #include <stdio.h>
- #include <unistd.h>
-
- static volatile int event_fd;
-
- static void handler(int sig, siginfo_t *si, void *data)
- {
- event_fd = si->si_fd;
- }
-
- int main(void)
- {
- struct sigaction act;
- int fd;
-
- act.sa_sigaction = handler;
- sigemptyset(&act.sa_mask);
- act.sa_flags = SA_SIGINFO;
- sigaction(SIGRTMIN + 1, &act, NULL);
-
- fd = open(".", O_RDONLY);
- fcntl(fd, F_SETSIG, SIGRTMIN + 1);
- fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
- /* we will now be notified if any of the files
- in "." is modified or new files are created */
- while (1) {
- pause();
- printf("Got event on fd=%d\n", event_fd);
- }
- }
+See Documentation/filesystems/dnotify_test.c for an example.
--- /dev/null
+++ lin2627-rc3g4-kerndoc/Documentation/filesystems/dnotify_test.c
@@ -0,0 +1,34 @@
+#define _GNU_SOURCE /* needed to get the defines */
+#include <fcntl.h> /* in glibc 2.2 this has the needed
+ values defined */
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static volatile int event_fd;
+
+static void handler(int sig, siginfo_t *si, void *data)
+{
+ event_fd = si->si_fd;
+}
+
+int main(void)
+{
+ struct sigaction act;
+ int fd;
+
+ act.sa_sigaction = handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+ sigaction(SIGRTMIN + 1, &act, NULL);
+
+ fd = open(".", O_RDONLY);
+ fcntl(fd, F_SETSIG, SIGRTMIN + 1);
+ fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
+ /* we will now be notified if any of the files
+ in "." is modified or new files are created */
+ while (1) {
+ pause();
+ printf("Got event on fd=%d\n", event_fd);
+ }
+}
--- lin2627-rc3g4-kerndoc.orig/Documentation/filesystems/00-INDEX
+++ lin2627-rc3g4-kerndoc/Documentation/filesystems/00-INDEX
@@ -34,6 +34,8 @@ dlmfs.txt
- info on the userspace interface to the OCFS2 DLM.
dnotify.txt
- info about directory notification in Linux.
+dnotify_test.c
+ - example program for dnotify
ecryptfs.txt
- docs on eCryptfs: stacked cryptographic filesystem for Linux.
ext2.txt
---
~Randy
Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
http://linuxplumbersconf.org/
--
