kernel/linux.git/fs/open.c, branch v7.0.10

fs: fix archiecture-specific compat_ftruncate64

2026-05-23T11:08:26+00:00

[ Upstream commit e43dce8a0bc09083ea1145a1a0c61d83cbe72d97 ] The "small" argument to do_sys_ftruncate indicates if > 32-bit size should be reject, but all the arch-specific compat ftruncate64 implementations get this wrong. Merge do_sys_ftruncate and ksys_ftruncate, replace the integer as boolean small flag with a descriptive one about LFS semantics, and use it correctly in the architecture-specific ftruncate64 implementations. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Fixes: 3dd681d944f6 ("arm64: 32-bit (compat) applications support") Signed-off-by: Christoph Hellwig Link: https://patch.msgid.link/20260323070205.2939118-2-hch@lst.de Reviewed-by: Jan Kara Signed-off-by: Christian Brauner Signed-off-by: Sasha Levin

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