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authorEric W. Biederman <ebiederm@xmission.com>2012-02-07 16:28:28 -0800
committerEric W. Biederman <ebiederm@xmission.com>2013-02-13 06:15:13 -0800
commit1ac7fd8190b79c822631ed537186fb8b2d9e9b74 (patch)
treede88733bf16f6ed670e0de354dded191ae844717 /fs/ncpfs/ioctl.c
parent0f07bd3753e25c80fe24428273c791f350b3a1eb (diff)
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ncpfs: Support interacting with multiple user namespaces
ncpfs does not natively support uids and gids so this conversion was simply a matter of updating the the type of the mounteduid, the uid and the gid on the superblock. Fixing the ioctls that read them, updating the mount option parser and the mount option printer. Cc: Petr Vandrovec <petr@vandrovec.name> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'fs/ncpfs/ioctl.c')
-rw-r--r--fs/ncpfs/ioctl.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index 6958adfaff08..d44318d27504 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -45,7 +45,7 @@ ncp_get_fs_info(struct ncp_server * server, struct inode *inode,
return -EINVAL;
}
/* TODO: info.addr = server->m.serv_addr; */
- SET_UID(info.mounted_uid, server->m.mounted_uid);
+ SET_UID(info.mounted_uid, from_kuid_munged(current_user_ns(), server->m.mounted_uid));
info.connection = server->connection;
info.buffer_size = server->buffer_size;
info.volume_number = NCP_FINFO(inode)->volNumber;
@@ -69,7 +69,7 @@ ncp_get_fs_info_v2(struct ncp_server * server, struct inode *inode,
DPRINTK("info.version invalid: %d\n", info2.version);
return -EINVAL;
}
- info2.mounted_uid = server->m.mounted_uid;
+ info2.mounted_uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
info2.connection = server->connection;
info2.buffer_size = server->buffer_size;
info2.volume_number = NCP_FINFO(inode)->volNumber;
@@ -135,7 +135,7 @@ ncp_get_compat_fs_info_v2(struct ncp_server * server, struct inode *inode,
DPRINTK("info.version invalid: %d\n", info2.version);
return -EINVAL;
}
- info2.mounted_uid = server->m.mounted_uid;
+ info2.mounted_uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
info2.connection = server->connection;
info2.buffer_size = server->buffer_size;
info2.volume_number = NCP_FINFO(inode)->volNumber;
@@ -348,22 +348,25 @@ static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg
{
u16 uid;
- SET_UID(uid, server->m.mounted_uid);
+ SET_UID(uid, from_kuid_munged(current_user_ns(), server->m.mounted_uid));
if (put_user(uid, (u16 __user *)argp))
return -EFAULT;
return 0;
}
case NCP_IOC_GETMOUNTUID32:
- if (put_user(server->m.mounted_uid,
- (u32 __user *)argp))
+ {
+ uid_t uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
+ if (put_user(uid, (u32 __user *)argp))
return -EFAULT;
return 0;
+ }
case NCP_IOC_GETMOUNTUID64:
- if (put_user(server->m.mounted_uid,
- (u64 __user *)argp))
+ {
+ uid_t uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
+ if (put_user(uid, (u64 __user *)argp))
return -EFAULT;
return 0;
-
+ }
case NCP_IOC_GETROOT:
{
struct ncp_setroot_ioctl sr;
@@ -810,7 +813,7 @@ long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct inode *inode = filp->f_dentry->d_inode;
struct ncp_server *server = NCP_SERVER(inode);
- uid_t uid = current_uid();
+ kuid_t uid = current_uid();
int need_drop_write = 0;
long ret;
@@ -824,7 +827,7 @@ long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
break;
}
- if (server->m.mounted_uid != uid) {
+ if (!uid_eq(server->m.mounted_uid, uid)) {
switch (cmd) {
/*
* Only mount owner can issue these ioctls. Information