f2fs: wire up FS_IOC_GET_ENCRYPTION_NONCE
This new ioctl retrieves a file's encryption nonce, which is useful for testing. See the corresponding fs/crypto/ patch for more details. Link: https://lore.kernel.org/r/20200314205052.93294-4-ebiggers@kernel.org Bug: 151100202 Change-Id: I26037efc77774c04951da887d8557a15ce6a23ed Signed-off-by: Eric Biggers <ebiggers@google.com> Git-commit: ee446e1af4ff90945e2273ae0af322b8b745b8cc Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git [neersoni@codeaurora.org: Back port the change] Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
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@ -2444,6 +2444,14 @@ static int f2fs_ioc_get_encryption_key_status(struct file *filp,
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return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
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}
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static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
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{
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if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
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return -EOPNOTSUPP;
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return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
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}
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static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
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{
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struct inode *inode = file_inode(filp);
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@ -3458,6 +3466,8 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
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return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
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case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
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return f2fs_ioc_get_encryption_key_status(filp, arg);
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case FS_IOC_GET_ENCRYPTION_NONCE:
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return f2fs_ioc_get_encryption_nonce(filp, arg);
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case F2FS_IOC_GARBAGE_COLLECT:
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return f2fs_ioc_gc(filp, arg);
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case F2FS_IOC_GARBAGE_COLLECT_RANGE:
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@ -3631,6 +3641,7 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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case FS_IOC_REMOVE_ENCRYPTION_KEY:
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case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
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case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
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case FS_IOC_GET_ENCRYPTION_NONCE:
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case F2FS_IOC_GARBAGE_COLLECT:
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case F2FS_IOC_GARBAGE_COLLECT_RANGE:
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case F2FS_IOC_WRITE_CHECKPOINT:
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