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userns: Convert ecryptfs to use kuid/kgid where appropriate

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Cc: Tyler Hicks <tyhicks@canonical.com>
Cc: Dustin Kirkland <dustin.kirkland@gazzang.com>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2012-02-07 16:24:33 -08:00
parent a7d9cfe97b
commit cdf8c58a35
3 changed files with 5 additions and 6 deletions
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5
fs/ecryptfs/main.c
View File

@ -544,11 +544,12 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
goto out_free;
}
if (check_ruid && path.dentry->d_inode->i_uid != current_uid()) {
if (check_ruid && !uid_eq(path.dentry->d_inode->i_uid, current_uid())) {
rc = -EPERM;
printk(KERN_ERR "Mount of device (uid: %d) not owned by "
"requested user (uid: %d)\n",
path.dentry->d_inode->i_uid, current_uid());
i_uid_read(path.dentry->d_inode),
from_kuid(&init_user_ns, current_uid()));
goto out_free;
}

5
fs/ecryptfs/messaging.c
View File

@ -33,7 +33,7 @@ static struct hlist_head *ecryptfs_daemon_hash;
struct mutex ecryptfs_daemon_hash_mux;
static int ecryptfs_hash_bits;
#define ecryptfs_current_euid_hash(uid) \
hash_long((unsigned long)current_euid(), ecryptfs_hash_bits)
hash_long((unsigned long)from_kuid(&init_user_ns, current_euid()), ecryptfs_hash_bits)
static u32 ecryptfs_msg_counter;
static struct ecryptfs_msg_ctx *ecryptfs_msg_ctx_arr;
@ -121,8 +121,7 @@ int ecryptfs_find_daemon_by_euid(struct ecryptfs_daemon **daemon)
hlist_for_each_entry(*daemon, elem,
&ecryptfs_daemon_hash[ecryptfs_current_euid_hash()],
euid_chain) {
if ((*daemon)->file->f_cred->euid == current_euid() &&
(*daemon)->file->f_cred->user_ns == current_user_ns()) {
if (uid_eq((*daemon)->file->f_cred->euid, current_euid())) {
rc = 0;
goto out;
}

1
init/Kconfig
View File

@ -941,7 +941,6 @@ config UIDGID_CONVERTED
depends on CEPH_FS = n
depends on CIFS = n
depends on CODA_FS = n
depends on ECRYPT_FS = n
depends on EFS_FS = n
depends on EXOFS_FS = n
depends on FUSE_FS = n