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fuse: device fd clone

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Allow an open fuse device to be "cloned".  Userspace can create a clone by:

      newfd = open("/dev/fuse", O_RDWR)
      ioctl(newfd, FUSE_DEV_IOC_CLONE, &oldfd);

At this point newfd will refer to the same fuse connection as oldfd.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Reviewed-by: Ashish Samant <ashish.samant@oracle.com>
This commit is contained in:
Miklos Szeredi 2015-07-01 16:26:08 +02:00
commit 00c570f4ba
3 changed files with 44 additions and 0 deletions
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3
include/uapi/linux/fuse.h
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@ -755,4 +755,7 @@ struct fuse_notify_retrieve_in {
uint64_t dummy4;
};
/* Device ioctls: */
#define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t)
#endif /* _LINUX_FUSE_H */