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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2018-07-21 00:56:47 +0300
committerDavid S. Miller <davem@davemloft.net>2018-07-21 09:44:35 +0300
commit488dee96bb62f0b3d9e678cf42574034d5b033a5 (patch)
tree2969d47ffb0ffeaf15d20ffb0eda78a2bb694a40 /fs/kernfs/kernfs-internal.h
parent7c4ec749a3bd89237d7195ccd621bf5d4124d6b5 (diff)
downloadlinux-488dee96bb62f0b3d9e678cf42574034d5b033a5.tar.xz
kernfs: allow creating kernfs objects with arbitrary uid/gid
This change allows creating kernfs files and directories with arbitrary uid/gid instead of always using GLOBAL_ROOT_UID/GID by extending kernfs_create_dir_ns() and kernfs_create_file_ns() with uid/gid arguments. The "simple" kernfs_create_file() and kernfs_create_dir() are left alone and always create objects belonging to the global root. When creating symlinks ownership (uid/gid) is taken from the target kernfs object. Co-Developed-by: Tyler Hicks <tyhicks@canonical.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Tyler Hicks <tyhicks@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/kernfs/kernfs-internal.h')
-rw-r--r--fs/kernfs/kernfs-internal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h
index 0f260dcca177..3d83b114bb08 100644
--- a/fs/kernfs/kernfs-internal.h
+++ b/fs/kernfs/kernfs-internal.h
@@ -90,6 +90,7 @@ int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr);
int kernfs_iop_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int query_flags);
ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size);
+int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr);
/*
* dir.c
@@ -104,6 +105,7 @@ void kernfs_put_active(struct kernfs_node *kn);
int kernfs_add_one(struct kernfs_node *kn);
struct kernfs_node *kernfs_new_node(struct kernfs_node *parent,
const char *name, umode_t mode,
+ kuid_t uid, kgid_t gid,
unsigned flags);
struct kernfs_node *kernfs_find_and_get_node_by_ino(struct kernfs_root *root,
unsigned int ino);