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authorEric Biggers <ebiggers@google.com>2019-12-10 01:23:25 +0300
committerRichard Weinberger <richard@nod.at>2020-01-17 01:35:43 +0300
commit219b0e2cba4ec326f88a08a5c9ad51103089bdab (patch)
treed5423a36dfb0dcd39cf9c25f29d5cbf8dd9befb7 /fs/ubifs/ioctl.c
parent2b57067a7778484c10892fa191997bfda29fea13 (diff)
downloadlinux-219b0e2cba4ec326f88a08a5c9ad51103089bdab.tar.xz
ubifs: Add support for FS_ENCRYPT_FL
Make the FS_IOC_GETFLAGS ioctl on ubifs return the FS_ENCRYPT_FL flag on encrypted files, like ext4 and f2fs do. Also make this flag be ignored by FS_IOC_SETFLAGS, like ext4 and f2fs do, since it's a recognized flag but is not directly settable. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'fs/ubifs/ioctl.c')
-rw-r--r--fs/ubifs/ioctl.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/ubifs/ioctl.c b/fs/ubifs/ioctl.c
index eeb1be259888..d49fc04f2d7d 100644
--- a/fs/ubifs/ioctl.c
+++ b/fs/ubifs/ioctl.c
@@ -17,10 +17,14 @@
#include "ubifs.h"
/* Need to be kept consistent with checked flags in ioctl2ubifs() */
-#define UBIFS_SUPPORTED_IOCTL_FLAGS \
+#define UBIFS_SETTABLE_IOCTL_FLAGS \
(FS_COMPR_FL | FS_SYNC_FL | FS_APPEND_FL | \
FS_IMMUTABLE_FL | FS_DIRSYNC_FL)
+/* Need to be kept consistent with checked flags in ubifs2ioctl() */
+#define UBIFS_GETTABLE_IOCTL_FLAGS \
+ (UBIFS_SETTABLE_IOCTL_FLAGS | FS_ENCRYPT_FL)
+
/**
* ubifs_set_inode_flags - set VFS inode flags.
* @inode: VFS inode to set flags for
@@ -91,6 +95,8 @@ static int ubifs2ioctl(int ubifs_flags)
ioctl_flags |= FS_IMMUTABLE_FL;
if (ubifs_flags & UBIFS_DIRSYNC_FL)
ioctl_flags |= FS_DIRSYNC_FL;
+ if (ubifs_flags & UBIFS_CRYPT_FL)
+ ioctl_flags |= FS_ENCRYPT_FL;
return ioctl_flags;
}
@@ -113,7 +119,7 @@ static int setflags(struct inode *inode, int flags)
if (err)
goto out_unlock;
- ui->flags &= ~ioctl2ubifs(UBIFS_SUPPORTED_IOCTL_FLAGS);
+ ui->flags &= ~ioctl2ubifs(UBIFS_SETTABLE_IOCTL_FLAGS);
ui->flags |= ioctl2ubifs(flags);
ubifs_set_inode_flags(inode);
inode->i_ctime = current_time(inode);
@@ -156,8 +162,9 @@ long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (get_user(flags, (int __user *) arg))
return -EFAULT;
- if (flags & ~UBIFS_SUPPORTED_IOCTL_FLAGS)
+ if (flags & ~UBIFS_GETTABLE_IOCTL_FLAGS)
return -EOPNOTSUPP;
+ flags &= UBIFS_SETTABLE_IOCTL_FLAGS;
if (!S_ISDIR(inode->i_mode))
flags &= ~FS_DIRSYNC_FL;