fscrypt.rst (1bdd3e05a0a3b4a97ea88bc46fef8fb265c8b94c) fscrypt.rst (457b1e353c739af39159269723949f315320446c)
1=====================================
2Filesystem-level encryption (fscrypt)
3=====================================
4
5Introduction
6============
7
8fscrypt is a library which filesystems can hook into to support

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970 may remain recoverable from free space on the disk; prefer to keep
971 all files encrypted from the very beginning. The `shred` program
972 may be used to overwrite the source files but isn't guaranteed to be
973 effective on all filesystems and storage devices.
974
975- Direct I/O is not supported on encrypted files. Attempts to use
976 direct I/O on such files will fall back to buffered I/O.
977
1=====================================
2Filesystem-level encryption (fscrypt)
3=====================================
4
5Introduction
6============
7
8fscrypt is a library which filesystems can hook into to support

--- 961 unchanged lines hidden (view full) ---

970 may remain recoverable from free space on the disk; prefer to keep
971 all files encrypted from the very beginning. The `shred` program
972 may be used to overwrite the source files but isn't guaranteed to be
973 effective on all filesystems and storage devices.
974
975- Direct I/O is not supported on encrypted files. Attempts to use
976 direct I/O on such files will fall back to buffered I/O.
977
978- The fallocate operations FALLOC_FL_COLLAPSE_RANGE,
979 FALLOC_FL_INSERT_RANGE, and FALLOC_FL_ZERO_RANGE are not supported
980 on encrypted files and will fail with EOPNOTSUPP.
978- The fallocate operations FALLOC_FL_COLLAPSE_RANGE and
979 FALLOC_FL_INSERT_RANGE are not supported on encrypted files and will
980 fail with EOPNOTSUPP.
981
982- Online defragmentation of encrypted files is not supported. The
983 EXT4_IOC_MOVE_EXT and F2FS_IOC_MOVE_RANGE ioctls will fail with
984 EOPNOTSUPP.
985
986- The ext4 filesystem does not support data journaling with encrypted
987 regular files. It will fall back to ordered data mode instead.
988

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981
982- Online defragmentation of encrypted files is not supported. The
983 EXT4_IOC_MOVE_EXT and F2FS_IOC_MOVE_RANGE ioctls will fail with
984 EOPNOTSUPP.
985
986- The ext4 filesystem does not support data journaling with encrypted
987 regular files. It will fall back to ordered data mode instead.
988

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