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authorRandy Dunlap <randy.dunlap@oracle.com>2010-03-10 18:21:57 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 18:52:35 -0500
commit1e0051ae48a253685e4309256f9c1ec2bdb74b5d (patch)
tree15d1d284fb91bb9b6683991402186c681c118d81 /Documentation/filesystems
parentd49129accc21ddb2e779d375dacafb612b1bd28d (diff)
Documentation/fs/: split txt and source files
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> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/00-INDEX2
-rw-r--r--Documentation/filesystems/Makefile8
-rw-r--r--Documentation/filesystems/dnotify.txt39
-rw-r--r--Documentation/filesystems/dnotify_test.c34
4 files changed, 49 insertions, 34 deletions
diff --git a/Documentation/filesystems/00-INDEX b/Documentation/filesystems/00-INDEX
index 5139b8c9d5af..3bae418c6ad3 100644
--- a/Documentation/filesystems/00-INDEX
+++ b/Documentation/filesystems/00-INDEX
@@ -32,6 +32,8 @@ dlmfs.txt
32 - info on the userspace interface to the OCFS2 DLM. 32 - info on the userspace interface to the OCFS2 DLM.
33dnotify.txt 33dnotify.txt
34 - info about directory notification in Linux. 34 - info about directory notification in Linux.
35dnotify_test.c
36 - example program for dnotify
35ecryptfs.txt 37ecryptfs.txt
36 - docs on eCryptfs: stacked cryptographic filesystem for Linux. 38 - docs on eCryptfs: stacked cryptographic filesystem for Linux.
37exofs.txt 39exofs.txt
diff --git a/Documentation/filesystems/Makefile b/Documentation/filesystems/Makefile
new file mode 100644
index 000000000000..a5dd114da14f
--- /dev/null
+++ b/Documentation/filesystems/Makefile
@@ -0,0 +1,8 @@
1# kbuild trick to avoid linker error. Can be omitted if a module is built.
2obj- := dummy.o
3
4# List of programs to build
5hostprogs-y := dnotify_test
6
7# Tell kbuild to always build the programs
8always := $(hostprogs-y)
diff --git a/Documentation/filesystems/dnotify.txt b/Documentation/filesystems/dnotify.txt
index 9f5d338ddbb8..6baf88f46859 100644
--- a/Documentation/filesystems/dnotify.txt
+++ b/Documentation/filesystems/dnotify.txt
@@ -62,38 +62,9 @@ disabled, fcntl(fd, F_NOTIFY, ...) will return -EINVAL.
62 62
63Example 63Example
64------- 64-------
65See Documentation/filesystems/dnotify_test.c for an example.
65 66
66 #define _GNU_SOURCE /* needed to get the defines */ 67NOTE
67 #include <fcntl.h> /* in glibc 2.2 this has the needed 68----
68 values defined */ 69Beginning with Linux 2.6.13, dnotify has been replaced by inotify.
69 #include <signal.h> 70See Documentation/filesystems/inotify.txt for more information on it.
70 #include <stdio.h>
71 #include <unistd.h>
72
73 static volatile int event_fd;
74
75 static void handler(int sig, siginfo_t *si, void *data)
76 {
77 event_fd = si->si_fd;
78 }
79
80 int main(void)
81 {
82 struct sigaction act;
83 int fd;
84
85 act.sa_sigaction = handler;
86 sigemptyset(&act.sa_mask);
87 act.sa_flags = SA_SIGINFO;
88 sigaction(SIGRTMIN + 1, &act, NULL);
89
90 fd = open(".", O_RDONLY);
91 fcntl(fd, F_SETSIG, SIGRTMIN + 1);
92 fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
93 /* we will now be notified if any of the files
94 in "." is modified or new files are created */
95 while (1) {
96 pause();
97 printf("Got event on fd=%d\n", event_fd);
98 }
99 }
diff --git a/Documentation/filesystems/dnotify_test.c b/Documentation/filesystems/dnotify_test.c
new file mode 100644
index 000000000000..8b37b4a1e18d
--- /dev/null
+++ b/Documentation/filesystems/dnotify_test.c
@@ -0,0 +1,34 @@
1#define _GNU_SOURCE /* needed to get the defines */
2#include <fcntl.h> /* in glibc 2.2 this has the needed
3 values defined */
4#include <signal.h>
5#include <stdio.h>
6#include <unistd.h>
7
8static volatile int event_fd;
9
10static void handler(int sig, siginfo_t *si, void *data)
11{
12 event_fd = si->si_fd;
13}
14
15int main(void)
16{
17 struct sigaction act;
18 int fd;
19
20 act.sa_sigaction = handler;
21 sigemptyset(&act.sa_mask);
22 act.sa_flags = SA_SIGINFO;
23 sigaction(SIGRTMIN + 1, &act, NULL);
24
25 fd = open(".", O_RDONLY);
26 fcntl(fd, F_SETSIG, SIGRTMIN + 1);
27 fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
28 /* we will now be notified if any of the files
29 in "." is modified or new files are created */
30 while (1) {
31 pause();
32 printf("Got event on fd=%d\n", event_fd);
33 }
34}