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| author | Roland Dreier <rdreier@cisco.com> | 2009-12-18 09:41:24 -0800 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-12-22 12:27:34 -0500 |
| commit | 628ff7c1d8d8466a5ad8078bd0206a130f8b8a51 (patch) | |
| tree | cc7ab0c90849be38e200fc6ff6a3a09e3caf0405 /fs/eventfd.c | |
| parent | ed2617585f39dd12fae38c657bba68b9779ea10d (diff) | |
| download | lwn-628ff7c1d8d8466a5ad8078bd0206a130f8b8a51.tar.gz lwn-628ff7c1d8d8466a5ad8078bd0206a130f8b8a51.zip | |
anonfd: Allow making anon files read-only
It seems a couple places such as arch/ia64/kernel/perfmon.c and
drivers/infiniband/core/uverbs_main.c could use anon_inode_getfile()
instead of a private pseudo-fs + alloc_file(), if only there were a way
to get a read-only file. So provide this by having anon_inode_getfile()
create a read-only file if we pass O_RDONLY in flags.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/eventfd.c')
| -rw-r--r-- | fs/eventfd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/eventfd.c b/fs/eventfd.c index 8b47e4200e65..d26402ff06ea 100644 --- a/fs/eventfd.c +++ b/fs/eventfd.c @@ -339,7 +339,7 @@ struct file *eventfd_file_create(unsigned int count, int flags) ctx->flags = flags; file = anon_inode_getfile("[eventfd]", &eventfd_fops, ctx, - flags & EFD_SHARED_FCNTL_FLAGS); + O_RDWR | (flags & EFD_SHARED_FCNTL_FLAGS)); if (IS_ERR(file)) eventfd_free_ctx(ctx); |