kernel/linux.git/fs/open.c, branch v7.0-rc7

Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2026-02-10T00:58:28+00:00

Pull vfs 'struct filename' updates from Al Viro: "[Mostly] sanitize struct filename handling" * tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (68 commits) sysfs(2): fs_index() argument is _not_ a pathname alpha: switch osf_mount() to strndup_user() ksmbd: use CLASS(filename_kernel) mqueue: switch to CLASS(filename) user_statfs(): switch to CLASS(filename) statx: switch to CLASS(filename_maybe_null) quotactl_block(): switch to CLASS(filename) chroot(2): switch to CLASS(filename) move_mount(2): switch to CLASS(filename_maybe_null) namei.c: switch user pathname imports to CLASS(filename{,_flags}) namei.c: convert getname_kernel() callers to CLASS(filename_kernel) do_f{chmod,chown,access}at(): use CLASS(filename_uflags) do_readlinkat(): switch to CLASS(filename_flags) do_sys_truncate(): switch to CLASS(filename) do_utimes_path(): switch to CLASS(filename_uflags) chdir(2): unspaghettify a bit... do_fchownat(): unspaghettify a bit... fspick(2): use CLASS(filename_flags) name_to_handle_at(): use CLASS(filename_uflags) vfs_open_tree(): use CLASS(filename_uflags) ...

chroot(2): switch to CLASS(filename)

2026-01-16T17:52:04+00:00

Signed-off-by: Al Viro

do_f{chmod,chown,access}at(): use CLASS(filename_uflags)

2026-01-16T17:52:03+00:00

Signed-off-by: Al Viro

do_sys_truncate(): switch to CLASS(filename)

2026-01-16T17:52:03+00:00

Note that failures from filename_lookup() are final - ESTALE returned by it means that retry had been done by filename_lookup() and it failed there. Signed-off-by: Al Viro

chdir(2): unspaghettify a bit...

2026-01-16T17:52:03+00:00

Signed-off-by: Al Viro

do_fchownat(): unspaghettify a bit...

2026-01-16T17:52:03+00:00

Signed-off-by: Al Viro

simplify the callers of file_open_name()

2026-01-13T20:18:08+00:00

It accepts ERR_PTR() for name and does the right thing in that case. That allows to simplify the logics in callers, making them trivial to switch to CLASS(filename). Signed-off-by: Al Viro

do_sys_openat2(): get rid of useless check, switch to CLASS(filename)

2026-01-13T20:18:08+00:00

do_file_open() will do the right thing when given ERR_PTR() as name... Signed-off-by: Al Viro

rename do_filp_open() to do_file_open()

2026-01-13T20:18:07+00:00

"filp" thing never made sense; seeing that there are exactly 4 callers in the entire tree (and it's neither exported nor even declared in linux/*/*.h), there's no point keeping that ugliness. FWIW, the 'filp' thing did originate in OSD&I; for some reason Tanenbaum decided to call the object representing an opened file 'struct filp', the last letter standing for 'position'. In all Unices, Linux included, the corresponding object had always been 'struct file'... Signed-off-by: Al Viro

do_sys_truncate(): import pathname only once

2026-01-13T20:16:44+00:00

Convert the user_path_at() call inside a retry loop into getname_flags() + filename_lookup() + putname() and leave only filename_lookup() inside the loop. In this case we never pass LOOKUP_EMPTY, so getname_flags() is equivalent to plain getname(). The things could be further simplified by use of cleanup.h stuff, but let's not clutter the patch with that. Signed-off-by: Al Viro