lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 30 Jun 2009 12:05:57 +0900 From: Tejun Heo <tj@...nel.org> To: Al Viro <viro@....linux.org.uk> CC: linux-kernel@...r.kernel.org, fuse-devel@...ts.sourceforge.net, miklos@...redi.hu, akpm@...ux-foundation.org, npiggin@...e.de Subject: Re: [PATCH 1/4] fdtable: export alloc_fd() Hello, Al. Al Viro wrote: > On Thu, Jun 18, 2009 at 06:24:30PM +0900, Tejun Heo wrote: >> Export alloc_fd(). Will be used by FUSE. > > Where and how? This currently is used via get_unused_fd_flags() in fuse_mmap_commit_prep(). A shmem_file is created in the requesting client's context (for accounting and easier flow of control) and then passed to the server's context where an fd is allocated and assigned to the file so that the fd can be passed to the userland server. The shmem_file based implementation serves certain device mmap file emulation well but as Miklos pointed out it may not be sufficiently flexible for other purposes and passing file back and forth and wrapping shmem_file is quite ugly, so I think there's pretty good chance it will get reimplemented in some different way which likely won't need alloc_fd() exported. If there's any vfs related changes, I'll cc you. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists