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[PATCH] fuse: clean up request size limit checking

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Change the way a too large request is handled.  Until now in this case the
device read returned -EINVAL and the operation returned -EIO.

Make it more flexibible by not returning -EINVAL from the read, but restarting
it instead.

Also remove the fixed limit on setxattr data and let the filesystem provide as
large a read buffer as it needs to handle the extended attribute data.

The symbolic link length is already checked by VFS to be less than PATH_MAX,
so the extra check against FUSE_SYMLINK_MAX is not needed.

The check in fuse_create_open() against FUSE_NAME_MAX is not needed, since the
dentry has already been looked up, and hence the name already checked.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Miklos Szeredi
2006-01-06 00:19:40 -08:00
committed by Linus Torvalds
parent 248d86e87d
commit 1d3d752b47
5 changed files with 26 additions and 33 deletions
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2
fs/fuse/inode.c
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@@ -485,7 +485,7 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent)
fc->max_read = d.max_read;
if (fc->max_read / PAGE_CACHE_SIZE < fc->bdi.ra_pages)
fc->bdi.ra_pages = fc->max_read / PAGE_CACHE_SIZE;
fc->max_write = FUSE_MAX_IN / 2;
fc->max_write = FUSE_MAX_WRITE;
err = -ENOMEM;
root = get_root_inode(sb, d.rootmode);