• Miklos Szeredi's avatar
    [patch 1/4] vfs: utimes: move owner check into inode_change_ok() · 9767d749
    Miklos Szeredi authored
    Add a new ia_valid flag: ATTR_TIMES_SET, to handle the
    UTIMES_OMIT/UTIMES_NOW and UTIMES_NOW/UTIMES_OMIT cases.  In these
    cases neither ATTR_MTIME_SET nor ATTR_ATIME_SET is in the flags, yet
    the POSIX draft specifies that permission checking is performed the
    same way as if one or both of the times was explicitly set to a
    timestamp.
    
    See the path "vfs: utimensat(): fix error checking for
    {UTIME_NOW,UTIME_OMIT} case" by Michael Kerrisk for the patch
    introducing this behavior.
    
    This is a cleanup, as well as allowing filesystems (NFS/fuse/...) to
    perform their own permission checking instead of the default.
    
    CC: Ulrich Drepper <drepper@redhat.com>
    CC: Michael Kerrisk <mtk.manpages@gmail.com>
    Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
    Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
    9767d749
utimes.c 5.27 KB