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authorRoland Dreier <rdreier@cisco.com>2009-12-18 09:41:24 -0800
committerAl Viro <viro@zeniv.linux.org.uk>2009-12-22 12:27:34 -0500
commit628ff7c1d8d8466a5ad8078bd0206a130f8b8a51 (patch)
treecc7ab0c90849be38e200fc6ff6a3a09e3caf0405 /fs/eventfd.c
parented2617585f39dd12fae38c657bba68b9779ea10d (diff)
downloadlinux-628ff7c1d8d8466a5ad8078bd0206a130f8b8a51.tar.gz
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.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/eventfd.c b/fs/eventfd.c
index 8b47e4200e6..d26402ff06e 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);