@@ -78,6 +78,7 @@ struct file;
extern struct pid *pidfd_pid(const struct file *file);
struct pid *pidfd_get_pid(unsigned int fd, unsigned int *flags);
+int pidfd_create(struct pid *pid, unsigned int flags);
static inline struct pid *get_pid(struct pid *pid)
{
@@ -550,10 +550,12 @@ struct pid *pidfd_get_pid(unsigned int fd, unsigned int *flags)
* Note, that this function can only be called after the fd table has
* been unshared to avoid leaking the pidfd to the new process.
*
+ * This symbol should not be explicitly exported to loadable modules.
+ *
* Return: On success, a cloexec pidfd is returned.
* On error, a negative errno number will be returned.
*/
-static int pidfd_create(struct pid *pid, unsigned int flags)
+int pidfd_create(struct pid *pid, unsigned int flags)
{
int fd;
With the idea of returning pidfds from the fanotify API, there needs to be mechanism exposed for creating pidfds. To do this, the static qualifier is dropped from pidfd_create() and a declaration is added to linux/pid.h so that this function can be called from other kernel subsystems i.e. fanotify in this case. Signed-off-by: Matthew Bobrowski <repnop@google.com> --- include/linux/pid.h | 1 + kernel/pid.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-)