diff options
| author | Matthew Bobrowski <repnop@google.com> | 2021-08-08 08:24:33 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2021-08-10 13:53:04 +0300 |
| commit | c576e0fcd6188d0edb50b0fb83f853433ef4819b (patch) | |
| tree | 9258197f8c86210e351e1e6e4f53b4397f55541b | |
| parent | 902e7f373fff2476b53824264c12e4e76c7ec02a (diff) | |
| download | linux-c576e0fcd6188d0edb50b0fb83f853433ef4819b.tar.xz | |
kernel/pid.c: remove static qualifier from pidfd_create()
With the idea of returning pidfds from the fanotify API, we need to
expose a mechanism for creating pidfds. We drop the static qualifier
from pidfd_create() and add its declaration to linux/pid.h so that the
pidfd_create() helper can be called from other kernel subsystems
i.e. fanotify.
Link: https://lore.kernel.org/r/0c68653ec32f1b7143301f0231f7ed14062fd82b.1628398044.git.repnop@google.com
Signed-off-by: Matthew Bobrowski <repnop@google.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Jan Kara <jack@suse.cz>
| -rw-r--r-- | include/linux/pid.h | 1 | ||||
| -rw-r--r-- | kernel/pid.c | 4 |
2 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/pid.h b/include/linux/pid.h index fa10acb8d6a4..af308e15f174 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -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) { diff --git a/kernel/pid.c b/kernel/pid.c index ebdf9c60cd0b..d3cd95b8b080 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -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; |