On Tue 10-11-26 10:14:30, Christian Brauner wrote: > Initialize debugfs as a pseudo filesystem. This raises SB_I_PSEUDO and > also SB_I_NOEXEC and SB_I_NODEV. debugfs never holds executables or > device nodes. > > SB_I_NOEXEC also refuses PROT_EXEC mappings. The debugfs files that > can be mapped, kcov, relay channels and powernv's memtrace, map data. > > Signed-off-by: Christian Brauner (Amutable) <[email protected]>
OK, makes sense. Feel free to add: Reviewed-by: Jan Kara <[email protected]> Honza > --- > fs/debugfs/inode.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c > index b4915551ad31..f163f0bc5703 100644 > --- a/fs/debugfs/inode.c > +++ b/fs/debugfs/inode.c > @@ -15,6 +15,7 @@ > #include <linux/module.h> > #include <linux/fs.h> > #include <linux/fs_context.h> > +#include <linux/pseudo_fs.h> > #include <linux/fs_parser.h> > #include <linux/pagemap.h> > #include <linux/init.h> > @@ -317,6 +318,7 @@ static int debugfs_init_fs_context(struct fs_context *fc) > fsi->mode = DEBUGFS_DEFAULT_MODE; > > fc->s_fs_info = fsi; > + fc_init_pseudo(fc); > fc->ops = &debugfs_context_ops; > return 0; > } > > -- > 2.53.0 > -- Jan Kara <[email protected]> SUSE Labs, CR
