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Subject[PATCH 00/22] siginfo unification

The following changes are available at:
git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git siginfo-testing

This set of changes unifies struct siginfo and struct compat_siginfo so
that there is only one definition of each. Additionally this ends up
with a single implementation of copy_siginfo_to_user32 and
copy_siginfo_from_user32.

This results in much less code, that might be slightly less readable as
it handles all of the cases it needs to deal with instead of just a few.
Not a single implementation of copy_siginfo_to_user32 or
copy_siginfo_from_user32 handled all of the ways data is encoded in
struct siginfo today.

Hopefully this will result in much more maintainable code.

Al Viro (3):
signal/mips: switch mips to generic siginfo
signal: kill __ARCH_SI_UID_T
signal: unify compat_siginfo_t

Eric W. Biederman (19):
signal: Document all of the signals that use the _sigfault union member
signal: Document the strange si_codes used by ptrace event stops
signal: Document glibc's si_code of SI_ASYNCNL
signal: Ensure no siginfo union member increases the size of struct siginfo
signal: Clear si_sys_private before copying siginfo to userspace
signal: Remove _sys_private and _overrun_incr from struct compat_siginfo
ia64/signal: switch to generic struct siginfo
signal/ia64: switch the last arch-specific copy_siginfo_to_user() to generic version
signal: Remove unnecessary ifdefs now that there is only one struct siginfo
signal: Move addr_lsb into the _sigfault union for clarity
signal/powerpc: Remove redefinition of NSIGTRAP on powerpc
signal/ia64: Move the ia64 specific si_codes to asm-generic/siginfo.h
signal/frv: Move the frv specific si_codes to asm-generic/siginfo.h
signal/tile: Move the tile specific si_codes to asm-generic/siginfo.h
signal/blackfin: Move the blackfin specific si_codes to asm-generic/siginfo.h
signal/blackfin: Remove pointless UID16_SIGINFO_COMPAT_NEEDED
signal: Unify and correct copy_siginfo_from_user32
signal: Remove the code to clear siginfo before calling copy_siginfo_from_user32
signal: Unify and correct copy_siginfo_to_user32

arch/arm64/include/asm/compat.h | 64 ----------
arch/arm64/kernel/signal32.c | 80 -------------
arch/blackfin/include/uapi/asm/siginfo.h | 34 ------
arch/frv/include/uapi/asm/Kbuild | 1 +
arch/frv/include/uapi/asm/siginfo.h | 13 --
arch/ia64/include/uapi/asm/siginfo.h | 96 ---------------
arch/ia64/kernel/signal.c | 52 --------
arch/mips/include/asm/compat.h | 73 ------------
arch/mips/include/uapi/asm/siginfo.h | 86 +-------------
arch/mips/kernel/signal32.c | 67 -----------
arch/parisc/include/asm/compat.h | 64 ----------
arch/parisc/kernel/signal32.c | 106 -----------------
arch/parisc/kernel/signal32.h | 3 -
arch/powerpc/include/asm/compat.h | 65 ----------
arch/powerpc/include/uapi/asm/siginfo.h | 3 -
arch/powerpc/kernel/signal_32.c | 66 -----------
arch/s390/include/asm/compat.h | 73 ------------
arch/s390/kernel/compat_signal.c | 100 ----------------
arch/sparc/include/asm/compat.h | 59 ---------
arch/sparc/kernel/signal32.c | 69 -----------
arch/tile/include/asm/compat.h | 62 ----------
arch/tile/include/uapi/asm/siginfo.h | 8 --
arch/tile/kernel/compat_signal.c | 73 ------------
arch/x86/include/asm/compat.h | 86 +-------------
arch/x86/include/asm/fpu/signal.h | 6 -
arch/x86/kernel/signal_compat.c | 123 ++-----------------
include/linux/compat.h | 100 +++++++++++++++-
include/linux/signal.h | 2 -
include/uapi/asm-generic/siginfo.h | 109 +++++++++++++----
kernel/ptrace.c | 1 -
kernel/signal.c | 197 +++++++++++++++++++++++++++++--
31 files changed, 382 insertions(+), 1559 deletions(-)

Eric

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