diff options
| author | Eric Biggers <ebiggers@google.com> | 2019-08-04 19:35:47 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2019-08-12 19:18:50 -0700 |
| commit | 78a1b96bcf7a0721c7852bb1475218c3cbef884a (patch) | |
| tree | c06a3abc722cba1df017467e0865c86671fb4ba8 /include/linux/fscrypt.h | |
| parent | 23c688b54016eed15d39f4387ca9da241e165922 (diff) | |
fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS ioctl
Add a root-only variant of the FS_IOC_REMOVE_ENCRYPTION_KEY ioctl which
removes all users' claims of the key, not just the current user's claim.
I.e., it always removes the key itself, no matter how many users have
added it.
This is useful for forcing a directory to be locked, without having to
figure out which user ID(s) the key was added under. This is planned to
be used by a command like 'sudo fscrypt lock DIR --all-users' in the
fscrypt userspace tool (http://github.com/google/fscrypt).
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Diffstat (limited to 'include/linux/fscrypt.h')
| -rw-r--r-- | include/linux/fscrypt.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h index 8b8ff0484042..f622f7460ed8 100644 --- a/include/linux/fscrypt.h +++ b/include/linux/fscrypt.h @@ -143,6 +143,8 @@ extern int fscrypt_inherit_context(struct inode *, struct inode *, extern void fscrypt_sb_free(struct super_block *sb); extern int fscrypt_ioctl_add_key(struct file *filp, void __user *arg); extern int fscrypt_ioctl_remove_key(struct file *filp, void __user *arg); +extern int fscrypt_ioctl_remove_key_all_users(struct file *filp, + void __user *arg); extern int fscrypt_ioctl_get_key_status(struct file *filp, void __user *arg); /* keysetup.c */ @@ -396,6 +398,12 @@ static inline int fscrypt_ioctl_remove_key(struct file *filp, void __user *arg) return -EOPNOTSUPP; } +static inline int fscrypt_ioctl_remove_key_all_users(struct file *filp, + void __user *arg) +{ + return -EOPNOTSUPP; +} + static inline int fscrypt_ioctl_get_key_status(struct file *filp, void __user *arg) { |