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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-24 06:50:11 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-24 06:50:11 +0400 |
commit | 9e2d59ad580d590134285f361a0e80f0e98c0207 (patch) | |
tree | f3232be75781484193413f32ec82c21f6d8eb76e /arch/x86/um | |
parent | 5ce1a70e2f00f0bce0cab57f798ca354b9496169 (diff) | |
parent | 235b80226b986dabcbba844968f7807866bd0bfe (diff) | |
download | linux-9e2d59ad580d590134285f361a0e80f0e98c0207.tar.xz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull signal handling cleanups from Al Viro:
"This is the first pile; another one will come a bit later and will
contain SYSCALL_DEFINE-related patches.
- a bunch of signal-related syscalls (both native and compat)
unified.
- a bunch of compat syscalls switched to COMPAT_SYSCALL_DEFINE
(fixing several potential problems with missing argument
validation, while we are at it)
- a lot of now-pointless wrappers killed
- a couple of architectures (cris and hexagon) forgot to save
altstack settings into sigframe, even though they used the
(uninitialized) values in sigreturn; fixed.
- microblaze fixes for delivery of multiple signals arriving at once
- saner set of helpers for signal delivery introduced, several
architectures switched to using those."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (143 commits)
x86: convert to ksignal
sparc: convert to ksignal
arm: switch to struct ksignal * passing
alpha: pass k_sigaction and siginfo_t using ksignal pointer
burying unused conditionals
make do_sigaltstack() static
arm64: switch to generic old sigaction() (compat-only)
arm64: switch to generic compat rt_sigaction()
arm64: switch compat to generic old sigsuspend
arm64: switch to generic compat rt_sigqueueinfo()
arm64: switch to generic compat rt_sigpending()
arm64: switch to generic compat rt_sigprocmask()
arm64: switch to generic sigaltstack
sparc: switch to generic old sigsuspend
sparc: COMPAT_SYSCALL_DEFINE does all sign-extension as well as SYSCALL_DEFINE
sparc: kill sign-extending wrappers for native syscalls
kill sparc32_open()
sparc: switch to use of generic old sigaction
sparc: switch sys_compat_rt_sigaction() to COMPAT_SYSCALL_DEFINE
mips: switch to generic sys_fork() and sys_clone()
...
Diffstat (limited to 'arch/x86/um')
-rw-r--r-- | arch/x86/um/Kconfig | 3 | ||||
-rw-r--r-- | arch/x86/um/Makefile | 4 | ||||
-rw-r--r-- | arch/x86/um/shared/sysdep/syscalls_32.h | 5 | ||||
-rw-r--r-- | arch/x86/um/signal.c | 15 | ||||
-rw-r--r-- | arch/x86/um/sys_call_table_32.c | 4 | ||||
-rw-r--r-- | arch/x86/um/syscalls_32.c | 38 |
6 files changed, 6 insertions, 63 deletions
diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig index 21a13ce1d751..14ef8d1dbc33 100644 --- a/arch/x86/um/Kconfig +++ b/arch/x86/um/Kconfig @@ -13,7 +13,6 @@ endmenu config UML_X86 def_bool y select GENERIC_FIND_FIRST_BIT - select GENERIC_SIGALTSTACK config 64BIT bool "64-bit kernel" if SUBARCH = "x86" @@ -25,6 +24,8 @@ config X86_32 select ARCH_WANT_IPC_PARSE_VERSION select MODULES_USE_ELF_REL select CLONE_BACKWARDS + select OLD_SIGSUSPEND3 + select OLD_SIGACTION config X86_64 def_bool 64BIT diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile index 5d065b2222d3..eafa324eb7a5 100644 --- a/arch/x86/um/Makefile +++ b/arch/x86/um/Makefile @@ -10,7 +10,7 @@ endif obj-y = bug.o bugs_$(BITS).o delay.o fault.o ksyms.o ldt.o \ ptrace_$(BITS).o ptrace_user.o setjmp_$(BITS).o signal.o \ - stub_$(BITS).o stub_segv.o syscalls_$(BITS).o \ + stub_$(BITS).o stub_segv.o \ sys_call_table_$(BITS).o sysrq_$(BITS).o tls_$(BITS).o \ mem_$(BITS).o subarch.o os-$(OS)/ @@ -25,7 +25,7 @@ subarch-$(CONFIG_HIGHMEM) += ../mm/highmem_32.o else -obj-y += vdso/ +obj-y += syscalls_64.o vdso/ subarch-y = ../lib/csum-partial_64.o ../lib/memcpy_64.o ../lib/thunk_64.o \ ../lib/rwsem.o diff --git a/arch/x86/um/shared/sysdep/syscalls_32.h b/arch/x86/um/shared/sysdep/syscalls_32.h index 8436079be914..68fd2cf526fd 100644 --- a/arch/x86/um/shared/sysdep/syscalls_32.h +++ b/arch/x86/um/shared/sysdep/syscalls_32.h @@ -8,11 +8,6 @@ typedef long syscall_handler_t(struct pt_regs); -/* Not declared on x86, incompatible declarations on x86_64, so these have - * to go here rather than in sys_call_table.c - */ -extern syscall_handler_t sys_rt_sigaction; - extern syscall_handler_t *sys_call_table[]; #define EXECUTE_SYSCALL(syscall, regs) \ diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c index 71cef48ea5cd..ae7319db18ee 100644 --- a/arch/x86/um/signal.c +++ b/arch/x86/um/signal.c @@ -464,7 +464,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, return 0; } -long sys_sigreturn(struct pt_regs *regs) +long sys_sigreturn(void) { unsigned long sp = PT_REGS_SP(¤t->thread.regs); struct sigframe __user *frame = (struct sigframe __user *)(sp - 8); @@ -577,7 +577,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, } #endif -long sys_rt_sigreturn(struct pt_regs *regs) +long sys_rt_sigreturn(void) { unsigned long sp = PT_REGS_SP(¤t->thread.regs); struct rt_sigframe __user *frame = @@ -601,14 +601,3 @@ long sys_rt_sigreturn(struct pt_regs *regs) force_sig(SIGSEGV, current); return 0; } - -#ifdef CONFIG_X86_32 -long ptregs_sigreturn(void) -{ - return sys_sigreturn(NULL); -} -long ptregs_rt_sigreturn(void) -{ - return sys_rt_sigreturn(NULL); -} -#endif diff --git a/arch/x86/um/sys_call_table_32.c b/arch/x86/um/sys_call_table_32.c index a0c3b0d1a122..531d4269e2e3 100644 --- a/arch/x86/um/sys_call_table_32.c +++ b/arch/x86/um/sys_call_table_32.c @@ -24,10 +24,6 @@ #define old_mmap sys_old_mmap -#define ptregs_iopl sys_iopl -#define ptregs_vm86old sys_vm86old -#define ptregs_vm86 sys_vm86 - #define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void sym(void) ; #include <asm/syscalls_32.h> diff --git a/arch/x86/um/syscalls_32.c b/arch/x86/um/syscalls_32.c deleted file mode 100644 index e8bcea99acdb..000000000000 --- a/arch/x86/um/syscalls_32.c +++ /dev/null @@ -1,38 +0,0 @@ -/* - * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) - * Licensed under the GPL - */ - -#include <linux/syscalls.h> -#include <sysdep/syscalls.h> - -long sys_sigaction(int sig, const struct old_sigaction __user *act, - struct old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} |