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Message-ID: <20091031184753.17244.50364.stgit@paris.rdu.redhat.com>
Date: Sat, 31 Oct 2009 14:47:54 -0400
From: Eric Paris <eparis@...hat.com>
To: linux-kernel@...r.kernel.org, linus-fsdevel@...r.kernel.org
Cc: viro@...iv.linux.org.uk, hch@...radead.org, agruen@...e.de,
eparis@...hat.com
Subject: [PATCH 06/10] fanotify: fanotify_init syscall declaration
This patch defines a new syscall fanotify_init() of the form:
int sys_fanotify_init(unsigned int flags, unsigned int event_f_flags, int priority)
This syscall is used to create and fanotify group. This is very similar to
the inotify_init() syscall.
Signed-off-by: Eric Paris <eparis@...hat.com>
---
arch/x86/ia32/ia32entry.S | 1 +
arch/x86/include/asm/unistd_32.h | 3 ++-
arch/x86/include/asm/unistd_64.h | 2 ++
arch/x86/kernel/syscall_table_32.S | 1 +
fs/notify/fanotify/Makefile | 2 +-
fs/notify/fanotify/fanotify_user.c | 13 +++++++++++++
include/linux/syscalls.h | 1 +
7 files changed, 21 insertions(+), 2 deletions(-)
create mode 100644 fs/notify/fanotify/fanotify_user.c
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index d23b987..df13544 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -842,4 +842,5 @@ ia32_sys_call_table:
.quad compat_sys_rt_tgsigqueueinfo /* 335 */
.quad sys_perf_event_open
.quad compat_sys_recvmmsg
+ .quad sys_fanotify_init
ia32_syscall_end:
diff --git a/arch/x86/include/asm/unistd_32.h b/arch/x86/include/asm/unistd_32.h
index 3baf379..1dc812d 100644
--- a/arch/x86/include/asm/unistd_32.h
+++ b/arch/x86/include/asm/unistd_32.h
@@ -343,10 +343,11 @@
#define __NR_rt_tgsigqueueinfo 335
#define __NR_perf_event_open 336
#define __NR_recvmmsg 337
+#define __NR_fanotify_init 338
#ifdef __KERNEL__
-#define NR_syscalls 338
+#define NR_syscalls 339
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/include/asm/unistd_64.h b/arch/x86/include/asm/unistd_64.h
index 4843f7b..83f0f69 100644
--- a/arch/x86/include/asm/unistd_64.h
+++ b/arch/x86/include/asm/unistd_64.h
@@ -663,6 +663,8 @@ __SYSCALL(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo)
__SYSCALL(__NR_perf_event_open, sys_perf_event_open)
#define __NR_recvmmsg 299
__SYSCALL(__NR_recvmmsg, sys_recvmmsg)
+#define __NR_fanotify_init 300
+__SYSCALL(__NR_fanotify_init, sys_fanotify_init)
#ifndef __NO_STUBS
#define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S
index 70c2125..34bf346 100644
--- a/arch/x86/kernel/syscall_table_32.S
+++ b/arch/x86/kernel/syscall_table_32.S
@@ -337,3 +337,4 @@ ENTRY(sys_call_table)
.long sys_rt_tgsigqueueinfo /* 335 */
.long sys_perf_event_open
.long sys_recvmmsg
+ .long sys_fanotify_init
diff --git a/fs/notify/fanotify/Makefile b/fs/notify/fanotify/Makefile
index e7d39c0..0999213 100644
--- a/fs/notify/fanotify/Makefile
+++ b/fs/notify/fanotify/Makefile
@@ -1 +1 @@
-obj-$(CONFIG_FANOTIFY) += fanotify.o
+obj-$(CONFIG_FANOTIFY) += fanotify.o fanotify_user.o
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
new file mode 100644
index 0000000..ca35276
--- /dev/null
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -0,0 +1,13 @@
+#include <linux/fcntl.h>
+#include <linux/fs.h>
+#include <linux/fsnotify_backend.h>
+#include <linux/security.h>
+#include <linux/syscalls.h>
+
+#include "fanotify.h"
+
+SYSCALL_DEFINE3(fanotify_init, unsigned int, flags, unsigned int, event_f_flags,
+ int, priority)
+{
+ return -ENOSYS;
+}
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index f03a2d9..534f9ff 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -876,6 +876,7 @@ asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
struct timespec __user *, const sigset_t __user *,
size_t);
+asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags, int priority);
int kernel_execve(const char *filename, char *const argv[], char *const envp[]);
--
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