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Subject[PATCH -v3 3/8] fsnotify: sys_execve and sys_uselib do not call into fsnotify
Date
sys_execve and sys_uselib do not call into fsnotify so inotify, dnotify,
and importantly to me fanotify do not see opens on things which are going
to be exectued. Create a generic fsnotify hook for these paths.

Signed-off-by: Eric Paris <eparis@redhat.com>
---
fs/exec.c | 5 +++++
include/linux/fsnotify.h | 7 +++++++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/fs/exec.c b/fs/exec.c
index 4e834f1..8f56995 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -51,6 +51,7 @@
#include <linux/audit.h>
#include <linux/tracehook.h>
#include <linux/kmod.h>
+#include <linux/fsnotify.h>

#include <asm/uaccess.h>
#include <asm/mmu_context.h>
@@ -135,6 +136,8 @@ asmlinkage long sys_uselib(const char __user * library)
if (IS_ERR(file))
goto out;

+ fsnotify_open_exec(file);
+
error = -ENOEXEC;
if(file->f_op) {
struct linux_binfmt * fmt;
@@ -687,6 +690,8 @@ struct file *open_exec(const char *name)
if (IS_ERR(file))
return file;

+ fsnotify_open_exec(file);
+
err = deny_write_access(file);
if (err) {
fput(file);
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index dec1afb..ffe787f 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -168,6 +168,13 @@ static inline void fsnotify_modify(struct file *file)
}

/*
+ * fsnotify_open_exec - file was opened by execve or uselib
+ */
+static inline void fsnotify_open_exec(struct file *file)
+{
+}
+
+/*
* fsnotify_open - file was opened
*/
static inline void fsnotify_open(struct file *file)


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