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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-04 17:03:05 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-04 17:03:05 -0400 |
commit | 7df934526c0b3775613502dcd19ab6d2da8cce1e (patch) | |
tree | 01e6a4ea20c676228f4acefc6ae776d2e52072db /mm/mmap.c | |
parent | 3c83e61e67256e0bb08c46cc2db43b58fd617251 (diff) | |
parent | bd42998a6bcb9b1708dac9ca9876e3d304c16f3d (diff) |
Merge branch 'cross-rename' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull renameat2 system call from Miklos Szeredi:
"This adds a new syscall, renameat2(), which is the same as renameat()
but with a flags argument.
The purpose of extending rename is to add cross-rename, a symmetric
variant of rename, which exchanges the two files. This allows
interesting things, which were not possible before, for example
atomically replacing a directory tree with a symlink, etc... This
also allows overlayfs and friends to operate on whiteouts atomically.
Andy Lutomirski also suggested a "noreplace" flag, which disables the
overwriting behavior of rename.
These two flags, RENAME_EXCHANGE and RENAME_NOREPLACE are only
implemented for ext4 as an example and for testing"
* 'cross-rename' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ext4: add cross rename support
ext4: rename: split out helper functions
ext4: rename: move EMLINK check up
ext4: rename: create ext4_renament structure for local vars
vfs: add cross-rename
vfs: lock_two_nondirectories: allow directory args
security: add flags to rename hooks
vfs: add RENAME_NOREPLACE flag
vfs: add renameat2 syscall
vfs: rename: use common code for dir and non-dir
vfs: rename: move d_move() up
vfs: add d_is_dir()
Diffstat (limited to 'mm/mmap.c')
0 files changed, 0 insertions, 0 deletions