• Christoph Hellwig's avatar
    signal: refactor copy_siginfo_to_user32 · c3b3f524
    Christoph Hellwig authored
    Factor out a copy_siginfo_to_external32 helper from
    copy_siginfo_to_user32 that fills out the compat_siginfo, but does so
    on a kernel space data structure.  With that we can let architectures
    override copy_siginfo_to_user32 with their own implementations using
    copy_siginfo_to_external32.  That allows moving the x32 SIGCHLD purely
    to x86 architecture code.
    
    As a nice side effect copy_siginfo_to_external32 also comes in handy
    for avoiding a set_fs() call in the coredump code later on.
    
    Contains improvements from Eric W. Biederman <ebiederm@xmission.com>
    and Arnd Bergmann <arnd@arndb.de>.
    Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
    Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
    c3b3f524
ia32_signal.c 10 KB