[PATCH RFC 03/12] userns: Convert ceph to use kuid/kgid where appropriate

Eric W. Biederman
2012-11-20T12:44:16Z

From: "Eric W. Biederman" <ebiederm@xmission.com>

Cc: Sage Weil <sage@inktank.com>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
fs/ceph/caps.c | 16 ++++++++--------
fs/ceph/inode.c | 18 +++++++++---------
fs/ceph/mds_client.c | 4 ++--
fs/ceph/super.h | 4 ++--
init/Kconfig | 1 -
5 files changed, 21 insertions(+), 22 deletions(-)

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 3251e9c..ee29cc6 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -928,7 +928,7 @@ static int send_cap_msg(struct ceph_mds_session *session,
u64 size, u64 max_size,
struct timespec *mtime, struct timespec *atime,
u64 time_warp_seq,
- uid_t uid, gid_t gid, umode_t mode,
+ kuid_t uid, kgid_t gid, umode_t mode,
u64 xattr_version,
struct ceph_buffer *xattrs_buf,
u64 follows)
@@ -972,8 +972,8 @@ static int send_cap_msg(struct ceph_mds_session *session,
ceph_encode_timespec(&fc->atime, atime);
fc->time_warp_seq = cpu_to_le32(time_warp_seq);

- fc->uid = cpu_to_le32(uid);
- fc->gid = cpu_to_le32(gid);
+ fc->uid = cpu_to_le32(from_kuid(&init_user_ns, uid));
+ fc->gid = cpu_to_le32(from_kgid(&init_user_ns, gid));
fc->mode = cpu_to_le32(mode);

fc->xattr_version = cpu_to_le64(xattr_version);
@@ -1079,8 +1079,8 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
struct timespec mtime, atime;
int wake = 0;
umode_t mode;
- uid_t uid;
- gid_t gid;
+ kuid_t uid;
+ kgid_t gid;
struct ceph_mds_session *session;
u64 xattr_version = 0;
struct ceph_buffer *xattr_blob = NULL;
@@ -2353,10 +2353,10 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,

if ((issued & CEPH_CAP_AUTH_EXCL) == 0) {
inode->i_mode = le32_to_cpu(grant->mode);
- inode->i_uid = le32_to_cpu(grant->uid);
- inode->i_gid = le32_to_cpu(grant->gid);
+ i_uid_write(inode, le32_to_cpu(grant->uid));
+ i_gid_write(inode, le32_to_cpu(grant->gid));
dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode,
- inode->i_uid, inode->i_gid);
+ i_uid_read(inode), i_gid_read(inode));
}

if ((issued & CEPH_CAP_LINK_EXCL) == 0)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index ba95eea..195b7fd 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -612,10 +612,10 @@ static int fill_inode(struct inode *inode,

if ((issued & CEPH_CAP_AUTH_EXCL) == 0) {
inode->i_mode = le32_to_cpu(info->mode);
- inode->i_uid = le32_to_cpu(info->uid);
- inode->i_gid = le32_to_cpu(info->gid);
+ i_uid_write(inode, le32_to_cpu(info->uid));
+ i_gid_write(inode, le32_to_cpu(info->gid));
dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode,
- inode->i_uid, inode->i_gid);
+ i_uid_read(inode), i_gid_read(inode));
}

if ((issued & CEPH_CAP_LINK_EXCL) == 0)
@@ -1562,26 +1562,26 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)

if (ia_valid & ATTR_UID) {
dout("setattr %p uid %d -> %d\n", inode,
- inode->i_uid, attr->ia_uid);
+ i_uid_read(inode), from_kuid(&init_user_ns, attr->ia_uid));
if (issued & CEPH_CAP_AUTH_EXCL) {
inode->i_uid = attr->ia_uid;
dirtied |= CEPH_CAP_AUTH_EXCL;
} else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
- attr->ia_uid != inode->i_uid) {
- req->r_args.setattr.uid = cpu_to_le32(attr->ia_uid);
+ !uid_eq(attr->ia_uid, inode->i_uid)) {
+ req->r_args.setattr.uid = cpu_to_le32(from_kuid(&init_user_ns, attr->ia_uid));
mask |= CEPH_SETATTR_UID;
release |= CEPH_CAP_AUTH_SHARED;
}
}
if (ia_valid & ATTR_GID) {
dout("setattr %p gid %d -> %d\n", inode,
- inode->i_gid, attr->ia_gid);
+ i_gid_read(inode), from_kgid(&init_user_ns, attr->ia_gid));
if (issued & CEPH_CAP_AUTH_EXCL) {
inode->i_gid = attr->ia_gid;
dirtied |= CEPH_CAP_AUTH_EXCL;
} else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
- attr->ia_gid != inode->i_gid) {
- req->r_args.setattr.gid = cpu_to_le32(attr->ia_gid);
+ !gid_eq(attr->ia_gid, inode->i_gid)) {
+ req->r_args.setattr.gid = cpu_to_le32(from_kgid(&init_user_ns, attr->ia_gid));
mask |= CEPH_SETATTR_GID;
release |= CEPH_CAP_AUTH_SHARED;
}
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 1bcf712..59e45fe 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -578,8 +578,8 @@ static void __register_request(struct ceph_mds_client *mdsc,
ceph_mdsc_get_request(req);
__insert_request(mdsc, req);

- req->r_uid = current_fsuid();
- req->r_gid = current_fsgid();
+ req->r_uid = from_kuid(&init_user_ns, current_fsuid());
+ req->r_gid = from_kgid(&init_user_ns, current_fsgid());

if (dir) {
struct ceph_inode_info *ci = ceph_inode(dir);
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 66ebe72..f053bbd 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -138,8 +138,8 @@ struct ceph_cap_snap {
struct ceph_snap_context *context;

umode_t mode;
- uid_t uid;
- gid_t gid;
+ kuid_t uid;
+ kgid_t gid;

struct ceph_buffer *xattr_blob;
u64 xattr_version;
diff --git a/init/Kconfig b/init/Kconfig
index dfa391d..cb2c46a 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -999,7 +999,6 @@ config UIDGID_CONVERTED
default y

# Filesystems
- depends on CEPH_FS = n
depends on CIFS = n
depends on CODA_FS = n
depends on GFS2_FS = n
--
1.7.5.4