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2012-12-19new helper: compat_user_stack_pointer()Al Viro3-2/+13
Compat counterpart of current_user_stack_pointer(); for most of the biarch architectures those two are identical, but e.g. arm64 and arm use different registers for stack pointer... Note that amd64 variants of current_user_stack_pointer/compat_user_stack_pointer do *not* rely on pt_regs having been through FIXUP_TOP_OF_STACK. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-12-19new helper: restore_altstack()Al Viro2-0/+9
to be used by rt_sigreturn instances Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-12-19unify SS_ONSTACK/SS_DISABLE definitionsAl Viro18-103/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-12-19new helper: current_user_stack_pointer()Al Viro7-0/+14
Cross-architecture equivalent of rdusp(); default is user_stack_pointer(current_pt_regs()) - that works for almost all platforms that have usp saved in pt_regs. The only exception from that is ia64 - we want memory stack, not the backing store for register one. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-12-19missing user_stack_pointer() instancesAl Viro9-0/+10
for the architectures that have usp in pt_regs and do not have user_stack_pointer() already defined. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-12-19Bury the conditionals from kernel_thread/kernel_execve seriesAl Viro63-131/+6
All architectures have CONFIG_GENERIC_KERNEL_THREAD CONFIG_GENERIC_KERNEL_EXECVE __ARCH_WANT_SYS_EXECVE None of them have __ARCH_WANT_KERNEL_EXECVE and there are only two callers of kernel_execve() (which is a trivial wrapper for do_execve() now) left. Kill the conditionals and make both callers use do_execve(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-12-19COMPAT_SYSCALL_DEFINE: infrastructureAl Viro2-0/+45
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-29do_coredump(): get rid of pt_regs argumentAl Viro3-5/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-29print_fatal_signal(): get rid of pt_regs argumentAl Viro1-2/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-29ptrace_signal(): get rid of unused argumentsAl Viro1-4/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-29get rid of ptrace_signal_deliver() argumentsAl Viro4-5/+5
the first one is equal to signal_pt_regs(), the second is never used (and always NULL, while we are at it). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-29new helper: signal_pt_regs()Al Viro3-0/+11
Always equal to task_pt_regs(current); defined only when we are in signal delivery. It may be different from current_pt_regs() - e.g. architectures like m68k may have pt_regs location on exception different from that on a syscall and signals (just as ptrace handling) may happen on exceptions as well as on syscalls. When they are equal, it's often better to have signal_pt_regs defined (in asm/ptrace.h) as current_pt_regs - that tends to be optimized better than default would be. However, optimisation is the only reason why we might want an arch-specific definition; if current_pt_regs() and task_pt_regs(current) have different values, the latter one is right. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-29unify default ptrace_signal_deliverAl Viro18-42/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-29flagday: kill pt_regs argument of do_fork()Al Viro9-26/+19
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28death to idle_regs()Al Viro4-22/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28don't pass regs to copy_process()Al Viro1-4/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28flagday: don't pass regs to copy_thread()Al Viro34-60/+45
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28bfin: switch to generic vfork, get rid of pointless wrappersAl Viro5-54/+7
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28xtensa: switch to generic clone()Al Viro5-11/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28openrisc: switch to use of generic fork and cloneAl Viro6-66/+19
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28unicore32: switch to generic clone(2)Al Viro4-25/+7
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28score: switch to generic fork/vfork/cloneAl Viro6-58/+8
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28c6x: sanitize copy_thread(), get rid of clone(2) wrapper, switch to generic clone()Al Viro4-36/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28take sys_fork/sys_vfork/sys_clone prototypes to linux/syscalls.hAl Viro12-63/+11
now it can be done... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28mn10300: switch to generic fork/vfork/cloneAl Viro2-28/+8
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28h8300: switch to generic fork/vfork/cloneAl Viro3-44/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28tile: switch to generic clone()Al Viro2-8/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28m68k: sanitize copy_thread(), fork/vfork/clone wrappers, switch to generic fork/vforkAl Viro4-71/+46
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28alpha: switch to generic fork/vfork/cloneAl Viro4-59/+17
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28s390: switch to generic fork/vfork/cloneAl Viro3-42/+14
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28microblaze: switch to generic fork/vfork/cloneAl Viro7-56/+12
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2012-11-28hexagon: switch to generic clone()Al Viro4-52/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28sh: switch to generic fork/vfork/cloneAl Viro5-110/+11
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28parisc: switch to generic fork/vfork/cloneAl Viro4-69/+22
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28m32r: switch to generic fork/vfork/cloneAl Viro2-42/+7
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28cris: switch to generic fork/vfork/cloneAl Viro4-60/+13
same braindamage as on s390 - the first two arguments of clone(2) in the wrong order. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28avr32: sanitize copy_thread(), switch to generic fork/vfork/clone, kill wrappersAl Viro4-47/+11
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28arm64: sanitize copy_thread(), switch to generic fork/vfork/cloneAl Viro7-28/+12
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28frv: switch to generic fork/vfork/cloneAl Viro2-40/+8
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28powerpc: switch to generic fork/clone/vforkAl Viro4-32/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28arm: switch to generic fork/vfork/cloneAl Viro6-55/+13
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28x86, um: switch to generic fork/vfork/cloneAl Viro16-117/+52
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28get rid of pt_regs argument of ->load_binary()Al Viro12-20/+25
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28get rid of pt_regs argument of search_binary_handler()Al Viro6-9/+8
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28get rid of pt_regs argument of do_execve_common()Al Viro1-4/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28get rid of pt_regs argument of do_execve()Al Viro3-13/+8
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28make compat_do_execve() static, lose pt_regs argumentAl Viro2-8/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28kill stray kernel_thread() garbageAl Viro4-6/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28audit: no nested contexts anymore...Al Viro1-81/+21
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-28consolidate sys_execve() prototypeAl Viro6-18/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>