From 2f174847b0fdd4eb9f482030a284db24aef7a97f Mon Sep 17 00:00:00 2001 From: eric miao Date: Thu, 12 Aug 2010 16:43:00 +0100 Subject: ARM: 6326/1: kgdb: fix GDB_MAX_REGS no longer used According to commit 22eeef4bb2a7fd225089c0044060ed1fbf091958 kgdb,arm: Individual register get/set for arm It's now replaced by DBG_MAX_REG_NUM. Cc: Jason Wessel Signed-off-by: Eric Miao Signed-off-by: Russell King --- arch/arm/kernel/kgdb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c index 778c2f7024ff..d6e8b4d2e60d 100644 --- a/arch/arm/kernel/kgdb.c +++ b/arch/arm/kernel/kgdb.c @@ -79,7 +79,7 @@ sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *task) return; /* Initialize to zero */ - for (regno = 0; regno < GDB_MAX_REGS; regno++) + for (regno = 0; regno < DBG_MAX_REG_NUM; regno++) gdb_regs[regno] = 0; /* Otherwise, we have only some registers from switch_to() */ -- cgit v1.2.3-59-g8ed1b From 21d93e2e29722d7832f61cc56d73fb953ee6578e Mon Sep 17 00:00:00 2001 From: Mikael Pettersson Date: Sun, 15 Aug 2010 10:47:23 +0100 Subject: ARM: 6329/1: wire up sys_accept4() on ARM sys_accept4() was added in kernel 2.6.28, but ARM was not updated to include it. The number and types of parameters is such that no ARM-specific processing is needed, so wiring up sys_accept4() just requires defining __NR_accept4 and adding a direct call in the syscall entry table. Tested with an EABI 2.6.35 kernel and Ulrich Drepper's original accept4() test program, modified to define __NR_accept4 for ARM. Using the updated unistd.h also eliminates a warning then building glibc (2.10.2 and newer) about accept4() being unimplemented. Signed-off-by: Mikael Pettersson Signed-off-by: Russell King --- arch/arm/include/asm/unistd.h | 1 + arch/arm/kernel/calls.S | 1 + 2 files changed, 2 insertions(+) (limited to 'arch/arm/kernel') diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h index dd2bf53000fe..d02cfb683487 100644 --- a/arch/arm/include/asm/unistd.h +++ b/arch/arm/include/asm/unistd.h @@ -392,6 +392,7 @@ #define __NR_rt_tgsigqueueinfo (__NR_SYSCALL_BASE+363) #define __NR_perf_event_open (__NR_SYSCALL_BASE+364) #define __NR_recvmmsg (__NR_SYSCALL_BASE+365) +#define __NR_accept4 (__NR_SYSCALL_BASE+366) /* * The following SWIs are ARM private. diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index 37ae301cc47c..afeb71fa72cb 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -375,6 +375,7 @@ CALL(sys_rt_tgsigqueueinfo) CALL(sys_perf_event_open) /* 365 */ CALL(sys_recvmmsg) + CALL(sys_accept4) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls #define syscalls_counted -- cgit v1.2.3-59-g8ed1b From d7627467b7a8dd6944885290a03a07ceb28c10eb Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 17 Aug 2010 23:52:56 +0100 Subject: Make do_execve() take a const filename pointer Make do_execve() take a const filename pointer so that kernel_execve() compiles correctly on ARM: arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type This also requires the argv and envp arguments to be consted twice, once for the pointer array and once for the strings the array points to. This is because do_execve() passes a pointer to the filename (now const) to copy_strings_kernel(). A simpler alternative would be to cast the filename pointer in do_execve() when it's passed to copy_strings_kernel(). do_execve() may not change any of the strings it is passed as part of the argv or envp lists as they are some of them in .rodata, so marking these strings as const should be fine. Further kernel_execve() and sys_execve() need to be changed to match. This has been test built on x86_64, frv, arm and mips. Signed-off-by: David Howells Tested-by: Ralf Baechle Acked-by: Russell King Signed-off-by: Linus Torvalds --- arch/alpha/kernel/process.c | 5 +++-- arch/arm/kernel/sys_arm.c | 14 +++++++++----- arch/avr32/kernel/process.c | 5 +++-- arch/avr32/kernel/sys_avr32.c | 4 +++- arch/blackfin/kernel/process.c | 4 +++- arch/cris/arch-v10/kernel/process.c | 4 +++- arch/cris/arch-v32/kernel/process.c | 6 ++++-- arch/frv/kernel/process.c | 5 +++-- arch/h8300/kernel/process.c | 5 ++++- arch/h8300/kernel/sys_h8300.c | 4 +++- arch/ia64/kernel/process.c | 4 +++- arch/m32r/kernel/process.c | 4 ++-- arch/m32r/kernel/sys_m32r.c | 4 +++- arch/m68k/kernel/process.c | 4 +++- arch/m68k/kernel/sys_m68k.c | 4 +++- arch/m68knommu/kernel/process.c | 4 +++- arch/m68knommu/kernel/sys_m68k.c | 4 +++- arch/microblaze/kernel/sys_microblaze.c | 10 +++++++--- arch/mips/kernel/syscall.c | 10 +++++++--- arch/mn10300/kernel/process.c | 4 ++-- arch/parisc/hpux/fs.c | 6 ++++-- arch/parisc/kernel/process.c | 15 ++++++++++----- arch/powerpc/kernel/process.c | 5 +++-- arch/s390/kernel/process.c | 5 +++-- arch/score/kernel/sys_score.c | 10 +++++++--- arch/sh/kernel/process_32.c | 7 ++++--- arch/sh/kernel/process_64.c | 4 ++-- arch/sh/kernel/sys_sh32.c | 4 +++- arch/sh/kernel/sys_sh64.c | 4 +++- arch/sparc/kernel/process_32.c | 6 ++++-- arch/sparc/kernel/process_64.c | 4 ++-- arch/sparc/kernel/sys_sparc_32.c | 4 +++- arch/sparc/kernel/sys_sparc_64.c | 4 +++- arch/tile/kernel/process.c | 5 +++-- arch/um/kernel/exec.c | 5 +++-- arch/um/kernel/syscall.c | 4 +++- arch/x86/include/asm/syscalls.h | 5 +++-- arch/x86/kernel/process.c | 5 +++-- arch/x86/kernel/sys_i386_32.c | 4 +++- arch/xtensa/kernel/process.c | 5 +++-- fs/binfmt_misc.c | 2 +- fs/binfmt_script.c | 3 ++- fs/exec.c | 21 +++++++++++---------- include/linux/binfmts.h | 7 ++++--- include/linux/sched.h | 4 +++- include/linux/syscalls.h | 2 +- init/do_mounts_initrd.c | 7 ++++--- init/main.c | 6 +++--- kernel/kmod.c | 4 +++- security/commoncap.c | 2 +- 50 files changed, 179 insertions(+), 98 deletions(-) (limited to 'arch/arm/kernel') diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c index 88e608aebc8c..842dba308eab 100644 --- a/arch/alpha/kernel/process.c +++ b/arch/alpha/kernel/process.c @@ -387,8 +387,9 @@ EXPORT_SYMBOL(dump_elf_task_fp); * sys_execve() executes a new program. */ asmlinkage int -do_sys_execve(const char __user *ufilename, char __user * __user *argv, - char __user * __user *envp, struct pt_regs *regs) +do_sys_execve(const char __user *ufilename, + const char __user *const __user *argv, + const char __user *const __user *envp, struct pt_regs *regs) { int error; char *filename; diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c index 5b7c541a4c63..62e7c61d0342 100644 --- a/arch/arm/kernel/sys_arm.c +++ b/arch/arm/kernel/sys_arm.c @@ -62,8 +62,9 @@ asmlinkage int sys_vfork(struct pt_regs *regs) /* sys_execve() executes a new program. * This is called indirectly via a small wrapper */ -asmlinkage int sys_execve(const char __user *filenamei, char __user * __user *argv, - char __user * __user *envp, struct pt_regs *regs) +asmlinkage int sys_execve(const char __user *filenamei, + const char __user *const __user *argv, + const char __user *const __user *envp, struct pt_regs *regs) { int error; char * filename; @@ -78,14 +79,17 @@ out: return error; } -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { struct pt_regs regs; int ret; memset(®s, 0, sizeof(struct pt_regs)); - ret = do_execve(filename, (char __user * __user *)argv, - (char __user * __user *)envp, ®s); + ret = do_execve(filename, + (const char __user *const __user *)argv, + (const char __user *const __user *)envp, ®s); if (ret < 0) goto out; diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c index e5daddff397d..9c46aaad11ce 100644 --- a/arch/avr32/kernel/process.c +++ b/arch/avr32/kernel/process.c @@ -384,8 +384,9 @@ asmlinkage int sys_vfork(struct pt_regs *regs) } asmlinkage int sys_execve(const char __user *ufilename, - char __user *__user *uargv, - char __user *__user *uenvp, struct pt_regs *regs) + const char __user *const __user *uargv, + const char __user *const __user *uenvp, + struct pt_regs *regs) { int error; char *filename; diff --git a/arch/avr32/kernel/sys_avr32.c b/arch/avr32/kernel/sys_avr32.c index 459349b5ed5a..62635a09ae3e 100644 --- a/arch/avr32/kernel/sys_avr32.c +++ b/arch/avr32/kernel/sys_avr32.c @@ -7,7 +7,9 @@ */ #include -int kernel_execve(const char *file, char **argv, char **envp) +int kernel_execve(const char *file, + const char *const *argv, + const char *const *envp) { register long scno asm("r8") = __NR_execve; register long sc1 asm("r12") = (long)file; diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c index a566f61c002a..01f98cb964d2 100644 --- a/arch/blackfin/kernel/process.c +++ b/arch/blackfin/kernel/process.c @@ -209,7 +209,9 @@ copy_thread(unsigned long clone_flags, /* * sys_execve() executes a new program. */ -asmlinkage int sys_execve(const char __user *name, char __user * __user *argv, char __user * __user *envp) +asmlinkage int sys_execve(const char __user *name, + const char __user *const __user *argv, + const char __user *const __user *envp) { int error; char *filename; diff --git a/arch/cris/arch-v10/kernel/process.c b/arch/cris/arch-v10/kernel/process.c index 93f0f64b1326..9a57db6907f5 100644 --- a/arch/cris/arch-v10/kernel/process.c +++ b/arch/cris/arch-v10/kernel/process.c @@ -204,7 +204,9 @@ asmlinkage int sys_vfork(long r10, long r11, long r12, long r13, long mof, long /* * sys_execve() executes a new program. */ -asmlinkage int sys_execve(const char *fname, char **argv, char **envp, +asmlinkage int sys_execve(const char *fname, + const char *const *argv, + const char *const *envp, long r13, long mof, long srp, struct pt_regs *regs) { diff --git a/arch/cris/arch-v32/kernel/process.c b/arch/cris/arch-v32/kernel/process.c index 2661a9529d70..562f84718906 100644 --- a/arch/cris/arch-v32/kernel/process.c +++ b/arch/cris/arch-v32/kernel/process.c @@ -218,8 +218,10 @@ sys_vfork(long r10, long r11, long r12, long r13, long mof, long srp, /* sys_execve() executes a new program. */ asmlinkage int -sys_execve(const char *fname, char **argv, char **envp, long r13, long mof, long srp, - struct pt_regs *regs) +sys_execve(const char *fname, + const char *const *argv, + const char *const *envp, long r13, long mof, long srp, + struct pt_regs *regs) { int error; char *filename; diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c index 428931cf2f0c..2b63b0191f52 100644 --- a/arch/frv/kernel/process.c +++ b/arch/frv/kernel/process.c @@ -250,8 +250,9 @@ int copy_thread(unsigned long clone_flags, /* * sys_execve() executes a new program. */ -asmlinkage int sys_execve(const char __user *name, char __user * __user *argv, - char __user * __user *envp) +asmlinkage int sys_execve(const char __user *name, + const char __user *const __user *argv, + const char __user *const __user *envp) { int error; char * filename; diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c index 8b7b78d77d5c..97478138e361 100644 --- a/arch/h8300/kernel/process.c +++ b/arch/h8300/kernel/process.c @@ -212,7 +212,10 @@ int copy_thread(unsigned long clone_flags, /* * sys_execve() executes a new program. */ -asmlinkage int sys_execve(const char *name, char **argv, char **envp,int dummy,...) +asmlinkage int sys_execve(const char *name, + const char *const *argv, + const char *const *envp, + int dummy, ...) { int error; char * filename; diff --git a/arch/h8300/kernel/sys_h8300.c b/arch/h8300/kernel/sys_h8300.c index f9b3f44da69f..dc1ac0243b78 100644 --- a/arch/h8300/kernel/sys_h8300.c +++ b/arch/h8300/kernel/sys_h8300.c @@ -51,7 +51,9 @@ asmlinkage void syscall_print(void *dummy,...) * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { register long res __asm__("er0"); register char *const *_c __asm__("er3") = envp; diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index a879c03b7f1c..16f1c7b04c69 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -633,7 +633,9 @@ dump_fpu (struct pt_regs *pt, elf_fpregset_t dst) } long -sys_execve (const char __user *filename, char __user * __user *argv, char __user * __user *envp, +sys_execve (const char __user *filename, + const char __user *const __user *argv, + const char __user *const __user *envp, struct pt_regs *regs) { char *fname; diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c index 8665a4d868ec..422bea9f1dbc 100644 --- a/arch/m32r/kernel/process.c +++ b/arch/m32r/kernel/process.c @@ -289,8 +289,8 @@ asmlinkage int sys_vfork(unsigned long r0, unsigned long r1, unsigned long r2, * sys_execve() executes a new program. */ asmlinkage int sys_execve(const char __user *ufilename, - char __user * __user *uargv, - char __user * __user *uenvp, + const char __user *const __user *uargv, + const char __user *const __user *uenvp, unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6, struct pt_regs regs) { diff --git a/arch/m32r/kernel/sys_m32r.c b/arch/m32r/kernel/sys_m32r.c index 0a00f467edfa..d841fb6cc703 100644 --- a/arch/m32r/kernel/sys_m32r.c +++ b/arch/m32r/kernel/sys_m32r.c @@ -93,7 +93,9 @@ asmlinkage int sys_cachectl(char *addr, int nbytes, int op) * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { register long __scno __asm__ ("r7") = __NR_execve; register long __arg3 __asm__ ("r2") = (long)(envp); diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c index 221d0b71ce39..18732ab23292 100644 --- a/arch/m68k/kernel/process.c +++ b/arch/m68k/kernel/process.c @@ -315,7 +315,9 @@ EXPORT_SYMBOL(dump_fpu); /* * sys_execve() executes a new program. */ -asmlinkage int sys_execve(const char __user *name, char __user * __user *argv, char __user * __user *envp) +asmlinkage int sys_execve(const char __user *name, + const char __user *const __user *argv, + const char __user *const __user *envp) { int error; char * filename; diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c index 77896692eb0a..2f431ece7b5f 100644 --- a/arch/m68k/kernel/sys_m68k.c +++ b/arch/m68k/kernel/sys_m68k.c @@ -459,7 +459,9 @@ asmlinkage int sys_getpagesize(void) * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { register long __res asm ("%d0") = __NR_execve; register long __a asm ("%d1") = (long)(filename); diff --git a/arch/m68knommu/kernel/process.c b/arch/m68knommu/kernel/process.c index 6350f68cd026..4d090d3c0897 100644 --- a/arch/m68knommu/kernel/process.c +++ b/arch/m68knommu/kernel/process.c @@ -350,7 +350,9 @@ void dump(struct pt_regs *fp) /* * sys_execve() executes a new program. */ -asmlinkage int sys_execve(const char *name, char **argv, char **envp) +asmlinkage int sys_execve(const char *name, + const char *const *argv, + const char *const *envp) { int error; char * filename; diff --git a/arch/m68knommu/kernel/sys_m68k.c b/arch/m68knommu/kernel/sys_m68k.c index d65e9c4c930c..68488ae47f0a 100644 --- a/arch/m68knommu/kernel/sys_m68k.c +++ b/arch/m68knommu/kernel/sys_m68k.c @@ -44,7 +44,9 @@ asmlinkage int sys_getpagesize(void) * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { register long __res asm ("%d0") = __NR_execve; register long __a asm ("%d1") = (long)(filename); diff --git a/arch/microblaze/kernel/sys_microblaze.c b/arch/microblaze/kernel/sys_microblaze.c index 6abab6ebedbe..2250fe9d269b 100644 --- a/arch/microblaze/kernel/sys_microblaze.c +++ b/arch/microblaze/kernel/sys_microblaze.c @@ -47,8 +47,10 @@ asmlinkage long microblaze_clone(int flags, unsigned long stack, struct pt_regs return do_fork(flags, stack, regs, 0, NULL, NULL); } -asmlinkage long microblaze_execve(const char __user *filenamei, char __user *__user *argv, - char __user *__user *envp, struct pt_regs *regs) +asmlinkage long microblaze_execve(const char __user *filenamei, + const char __user *const __user *argv, + const char __user *const __user *envp, + struct pt_regs *regs) { int error; char *filename; @@ -77,7 +79,9 @@ asmlinkage long sys_mmap(unsigned long addr, unsigned long len, * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { register const char *__a __asm__("r5") = filename; register const void *__b __asm__("r6") = argv; diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c index bddce0bca195..1dc6edff45e0 100644 --- a/arch/mips/kernel/syscall.c +++ b/arch/mips/kernel/syscall.c @@ -258,8 +258,10 @@ asmlinkage int sys_execve(nabi_no_regargs struct pt_regs regs) error = PTR_ERR(filename); if (IS_ERR(filename)) goto out; - error = do_execve(filename, (char __user *__user *) (long)regs.regs[5], - (char __user *__user *) (long)regs.regs[6], ®s); + error = do_execve(filename, + (const char __user *const __user *) (long)regs.regs[5], + (const char __user *const __user *) (long)regs.regs[6], + ®s); putname(filename); out: @@ -436,7 +438,9 @@ asmlinkage void bad_stack(void) * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { register unsigned long __a0 asm("$4") = (unsigned long) filename; register unsigned long __a1 asm("$5") = (unsigned long) argv; diff --git a/arch/mn10300/kernel/process.c b/arch/mn10300/kernel/process.c index 762eb325b949..f48373e2bc1c 100644 --- a/arch/mn10300/kernel/process.c +++ b/arch/mn10300/kernel/process.c @@ -269,8 +269,8 @@ asmlinkage long sys_vfork(void) } asmlinkage long sys_execve(const char __user *name, - char __user * __user *argv, - char __user * __user *envp) + const char __user *const __user *argv, + const char __user *const __user *envp) { char *filename; int error; diff --git a/arch/parisc/hpux/fs.c b/arch/parisc/hpux/fs.c index 1444875a7611..0dc8543acb4f 100644 --- a/arch/parisc/hpux/fs.c +++ b/arch/parisc/hpux/fs.c @@ -41,8 +41,10 @@ int hpux_execve(struct pt_regs *regs) if (IS_ERR(filename)) goto out; - error = do_execve(filename, (char __user * __user *) regs->gr[25], - (char __user * __user *) regs->gr[24], regs); + error = do_execve(filename, + (const char __user *const __user *) regs->gr[25], + (const char __user *const __user *) regs->gr[24], + regs); putname(filename); diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c index 76332dadc6e9..4b4b9181a1a0 100644 --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -348,17 +348,22 @@ asmlinkage int sys_execve(struct pt_regs *regs) error = PTR_ERR(filename); if (IS_ERR(filename)) goto out; - error = do_execve(filename, (char __user * __user *) regs->gr[25], - (char __user * __user *) regs->gr[24], regs); + error = do_execve(filename, + (const char __user *const __user *) regs->gr[25], + (const char __user *const __user *) regs->gr[24], + regs); putname(filename); out: return error; } -extern int __execve(const char *filename, char *const argv[], - char *const envp[], struct task_struct *task); -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +extern int __execve(const char *filename, + const char *const argv[], + const char *const envp[], struct task_struct *task); +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { return __execve(filename, argv, envp, current); } diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index feacfb789686..91356ffda2ca 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1034,8 +1034,9 @@ int sys_execve(unsigned long a0, unsigned long a1, unsigned long a2, flush_fp_to_thread(current); flush_altivec_to_thread(current); flush_spe_to_thread(current); - error = do_execve(filename, (char __user * __user *) a1, - (char __user * __user *) a2, regs); + error = do_execve(filename, + (const char __user *const __user *) a1, + (const char __user *const __user *) a2, regs); putname(filename); out: return error; diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 7eafaf2662b9..d3a2d1c6438e 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -267,8 +267,9 @@ asmlinkage void execve_tail(void) /* * sys_execve() executes a new program. */ -SYSCALL_DEFINE3(execve, const char __user *, name, char __user * __user *, argv, - char __user * __user *, envp) +SYSCALL_DEFINE3(execve, const char __user *, name, + const char __user *const __user *, argv, + const char __user *const __user *, envp) { struct pt_regs *regs = task_pt_regs(current); char *filename; diff --git a/arch/score/kernel/sys_score.c b/arch/score/kernel/sys_score.c index 651096ff8db4..e478bf9a7e91 100644 --- a/arch/score/kernel/sys_score.c +++ b/arch/score/kernel/sys_score.c @@ -99,8 +99,10 @@ score_execve(struct pt_regs *regs) if (IS_ERR(filename)) return error; - error = do_execve(filename, (char __user *__user*)regs->regs[5], - (char __user *__user *) regs->regs[6], regs); + error = do_execve(filename, + (const char __user *const __user *)regs->regs[5], + (const char __user *const __user *)regs->regs[6], + regs); putname(filename); return error; @@ -110,7 +112,9 @@ score_execve(struct pt_regs *regs) * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { register unsigned long __r4 asm("r4") = (unsigned long) filename; register unsigned long __r5 asm("r5") = (unsigned long) argv; diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c index 052981972ae6..762a13984bbd 100644 --- a/arch/sh/kernel/process_32.c +++ b/arch/sh/kernel/process_32.c @@ -296,9 +296,10 @@ asmlinkage int sys_vfork(unsigned long r4, unsigned long r5, /* * sys_execve() executes a new program. */ -asmlinkage int sys_execve(char __user *ufilename, char __user * __user *uargv, - char __user * __user *uenvp, unsigned long r7, - struct pt_regs __regs) +asmlinkage int sys_execve(const char __user *ufilename, + const char __user *const __user *uargv, + const char __user *const __user *uenvp, + unsigned long r7, struct pt_regs __regs) { struct pt_regs *regs = RELOC_HIDE(&__regs, 0); int error; diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c index 68d128d651b3..210c1cabcb7f 100644 --- a/arch/sh/kernel/process_64.c +++ b/arch/sh/kernel/process_64.c @@ -497,8 +497,8 @@ asmlinkage int sys_execve(const char *ufilename, char **uargv, goto out; error = do_execve(filename, - (char __user * __user *)uargv, - (char __user * __user *)uenvp, + (const char __user *const __user *)uargv, + (const char __user *const __user *)uenvp, pregs); putname(filename); out: diff --git a/arch/sh/kernel/sys_sh32.c b/arch/sh/kernel/sys_sh32.c index eb68bfdd86e6..f56b6fe5c5d0 100644 --- a/arch/sh/kernel/sys_sh32.c +++ b/arch/sh/kernel/sys_sh32.c @@ -71,7 +71,9 @@ asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1, * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { register long __sc0 __asm__ ("r3") = __NR_execve; register long __sc4 __asm__ ("r4") = (long) filename; diff --git a/arch/sh/kernel/sys_sh64.c b/arch/sh/kernel/sys_sh64.c index 287235768bc5..c5a38c4bf410 100644 --- a/arch/sh/kernel/sys_sh64.c +++ b/arch/sh/kernel/sys_sh64.c @@ -33,7 +33,9 @@ * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { register unsigned long __sc0 __asm__ ("r9") = ((0x13 << 16) | __NR_execve); register unsigned long __sc2 __asm__ ("r2") = (unsigned long) filename; diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c index 40e29fc8a4d6..17529298c50a 100644 --- a/arch/sparc/kernel/process_32.c +++ b/arch/sparc/kernel/process_32.c @@ -633,8 +633,10 @@ asmlinkage int sparc_execve(struct pt_regs *regs) if(IS_ERR(filename)) goto out; error = do_execve(filename, - (char __user * __user *)regs->u_regs[base + UREG_I1], - (char __user * __user *)regs->u_regs[base + UREG_I2], + (const char __user *const __user *) + regs->u_regs[base + UREG_I1], + (const char __user *const __user *) + regs->u_regs[base + UREG_I2], regs); putname(filename); out: diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c index dbe81a368b45..485f54748384 100644 --- a/arch/sparc/kernel/process_64.c +++ b/arch/sparc/kernel/process_64.c @@ -739,9 +739,9 @@ asmlinkage int sparc_execve(struct pt_regs *regs) if (IS_ERR(filename)) goto out; error = do_execve(filename, - (char __user * __user *) + (const char __user *const __user *) regs->u_regs[base + UREG_I1], - (char __user * __user *) + (const char __user *const __user *) regs->u_regs[base + UREG_I2], regs); putname(filename); if (!error) { diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c index ee995b7dae7e..50794137d710 100644 --- a/arch/sparc/kernel/sys_sparc_32.c +++ b/arch/sparc/kernel/sys_sparc_32.c @@ -282,7 +282,9 @@ out: * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { long __res; register long __g1 __asm__ ("g1") = __NR_execve; diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 3d435c42e6db..f836f4e93afe 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -758,7 +758,9 @@ SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act, * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { long __res; register long __g1 __asm__ ("g1") = __NR_execve; diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c index ed590ad0acdc..985cc28c74c5 100644 --- a/arch/tile/kernel/process.c +++ b/arch/tile/kernel/process.c @@ -543,8 +543,9 @@ long _sys_vfork(struct pt_regs *regs) /* * sys_execve() executes a new program. */ -long _sys_execve(char __user *path, char __user *__user *argv, - char __user *__user *envp, struct pt_regs *regs) +long _sys_execve(const char __user *path, + const char __user *const __user *argv, + const char __user *const __user *envp, struct pt_regs *regs) { long error; char *filename; diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c index 59b20d93b6d4..cd145eda3579 100644 --- a/arch/um/kernel/exec.c +++ b/arch/um/kernel/exec.c @@ -44,8 +44,9 @@ void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp) PT_REGS_SP(regs) = esp; } -static long execve1(const char *file, char __user * __user *argv, - char __user *__user *env) +static long execve1(const char *file, + const char __user *const __user *argv, + const char __user *const __user *env) { long error; diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c index 7427c0b1930c..5ddb246626db 100644 --- a/arch/um/kernel/syscall.c +++ b/arch/um/kernel/syscall.c @@ -51,7 +51,9 @@ long old_mmap(unsigned long addr, unsigned long len, return err; } -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { mm_segment_t fs; int ret; diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h index feb2ff9bfc2d..f1d8b441fc77 100644 --- a/arch/x86/include/asm/syscalls.h +++ b/arch/x86/include/asm/syscalls.h @@ -23,8 +23,9 @@ long sys_iopl(unsigned int, struct pt_regs *); /* kernel/process.c */ int sys_fork(struct pt_regs *); int sys_vfork(struct pt_regs *); -long sys_execve(const char __user *, char __user * __user *, - char __user * __user *, struct pt_regs *); +long sys_execve(const char __user *, + const char __user *const __user *, + const char __user *const __user *, struct pt_regs *); long sys_clone(unsigned long, unsigned long, void __user *, void __user *, struct pt_regs *); diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 64ecaf0af9af..57d1868a86aa 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -301,8 +301,9 @@ EXPORT_SYMBOL(kernel_thread); /* * sys_execve() executes a new program. */ -long sys_execve(const char __user *name, char __user * __user *argv, - char __user * __user *envp, struct pt_regs *regs) +long sys_execve(const char __user *name, + const char __user *const __user *argv, + const char __user *const __user *envp, struct pt_regs *regs) { long error; char *filename; diff --git a/arch/x86/kernel/sys_i386_32.c b/arch/x86/kernel/sys_i386_32.c index 196552bb412c..d5e06624e34a 100644 --- a/arch/x86/kernel/sys_i386_32.c +++ b/arch/x86/kernel/sys_i386_32.c @@ -28,7 +28,9 @@ * Do a system call from kernel instead of calling sys_execve so we * end up with proper pt_regs. */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) { long __res; asm volatile ("push %%ebx ; movl %2,%%ebx ; int $0x80 ; pop %%ebx" diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c index 7c2f38f68ebb..e3558b9a58ba 100644 --- a/arch/xtensa/kernel/process.c +++ b/arch/xtensa/kernel/process.c @@ -318,8 +318,9 @@ long xtensa_clone(unsigned long clone_flags, unsigned long newsp, */ asmlinkage -long xtensa_execve(const char __user *name, char __user * __user *argv, - char __user * __user *envp, +long xtensa_execve(const char __user *name, + const char __user *const __user *argv, + const char __user *const __user *envp, long a3, long a4, long a5, struct pt_regs *regs) { diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index 9e60fd201716..a7528b913936 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -108,7 +108,7 @@ static int load_misc_binary(struct linux_binprm *bprm, struct pt_regs *regs) Node *fmt; struct file * interp_file = NULL; char iname[BINPRM_BUF_SIZE]; - char *iname_addr = iname; + const char *iname_addr = iname; int retval; int fd_binary = -1; diff --git a/fs/binfmt_script.c b/fs/binfmt_script.c index aca9d55afb22..396a9884591f 100644 --- a/fs/binfmt_script.c +++ b/fs/binfmt_script.c @@ -16,7 +16,8 @@ static int load_script(struct linux_binprm *bprm,struct pt_regs *regs) { - char *cp, *i_name, *i_arg; + const char *i_arg, *i_name; + char *cp; struct file *file; char interp[BINPRM_BUF_SIZE]; int retval; diff --git a/fs/exec.c b/fs/exec.c index 7761837e4500..05c7d6b84df7 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -361,13 +361,13 @@ err: /* * count() counts the number of strings in array ARGV. */ -static int count(char __user * __user * argv, int max) +static int count(const char __user * const __user * argv, int max) { int i = 0; if (argv != NULL) { for (;;) { - char __user * p; + const char __user * p; if (get_user(p, argv)) return -EFAULT; @@ -387,7 +387,7 @@ static int count(char __user * __user * argv, int max) * processes's memory to the new process's stack. The call to get_user_pages() * ensures the destination page is created and not swapped out. */ -static int copy_strings(int argc, char __user * __user * argv, +static int copy_strings(int argc, const char __user *const __user *argv, struct linux_binprm *bprm) { struct page *kmapped_page = NULL; @@ -396,7 +396,7 @@ static int copy_strings(int argc, char __user * __user * argv, int ret; while (argc-- > 0) { - char __user *str; + const char __user *str; int len; unsigned long pos; @@ -470,12 +470,13 @@ out: /* * Like copy_strings, but get argv and its values from kernel memory. */ -int copy_strings_kernel(int argc,char ** argv, struct linux_binprm *bprm) +int copy_strings_kernel(int argc, const char *const *argv, + struct linux_binprm *bprm) { int r; mm_segment_t oldfs = get_fs(); set_fs(KERNEL_DS); - r = copy_strings(argc, (char __user * __user *)argv, bprm); + r = copy_strings(argc, (const char __user *const __user *)argv, bprm); set_fs(oldfs); return r; } @@ -997,7 +998,7 @@ EXPORT_SYMBOL(flush_old_exec); void setup_new_exec(struct linux_binprm * bprm) { int i, ch; - char * name; + const char *name; char tcomm[sizeof(current->comm)]; arch_pick_mmap_layout(current->mm); @@ -1316,9 +1317,9 @@ EXPORT_SYMBOL(search_binary_handler); /* * sys_execve() executes a new program. */ -int do_execve(char * filename, - char __user *__user *argv, - char __user *__user *envp, +int do_execve(const char * filename, + const char __user *const __user *argv, + const char __user *const __user *envp, struct pt_regs * regs) { struct linux_binprm *bprm; diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index c809e286d213..a065612fc928 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -50,8 +50,8 @@ struct linux_binprm{ int unsafe; /* how unsafe this exec is (mask of LSM_UNSAFE_*) */ unsigned int per_clear; /* bits to clear in current->personality */ int argc, envc; - char * filename; /* Name of binary as seen by procps */ - char * interp; /* Name of the binary really executed. Most + const char * filename; /* Name of binary as seen by procps */ + const char * interp; /* Name of the binary really executed. Most of the time same as filename, but could be different for binfmt_{misc,script} */ unsigned interp_flags; @@ -126,7 +126,8 @@ extern int setup_arg_pages(struct linux_binprm * bprm, unsigned long stack_top, int executable_stack); extern int bprm_mm_init(struct linux_binprm *bprm); -extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm); +extern int copy_strings_kernel(int argc, const char *const *argv, + struct linux_binprm *bprm); extern int prepare_bprm_creds(struct linux_binprm *bprm); extern void install_exec_creds(struct linux_binprm *bprm); extern void do_coredump(long signr, int exit_code, struct pt_regs *regs); diff --git a/include/linux/sched.h b/include/linux/sched.h index ce160d68f5e7..1e2a6db2d7dd 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2109,7 +2109,9 @@ extern void daemonize(const char *, ...); extern int allow_signal(int); extern int disallow_signal(int); -extern int do_execve(char *, char __user * __user *, char __user * __user *, struct pt_regs *); +extern int do_execve(const char *, + const char __user * const __user *, + const char __user * const __user *, struct pt_regs *); extern long do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long, int __user *, int __user *); struct task_struct *fork_idle(int); diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 6e5d19788634..e6319d18a55d 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -820,7 +820,7 @@ asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, u64 mask, int fd, const char __user *pathname); -int kernel_execve(const char *filename, char *const argv[], char *const envp[]); +int kernel_execve(const char *filename, const char *const argv[], const char *const envp[]); asmlinkage long sys_perf_event_open( diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index 2b108538d0d9..3098a38f3ae1 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -24,10 +24,11 @@ static int __init no_initrd(char *str) __setup("noinitrd", no_initrd); -static int __init do_linuxrc(void * shell) +static int __init do_linuxrc(void *_shell) { - static char *argv[] = { "linuxrc", NULL, }; - extern char * envp_init[]; + static const char *argv[] = { "linuxrc", NULL, }; + extern const char *envp_init[]; + const char *shell = _shell; sys_close(old_fd);sys_close(root_fd); sys_setsid(); diff --git a/init/main.c b/init/main.c index 22d61cb06f98..94ab488039aa 100644 --- a/init/main.c +++ b/init/main.c @@ -197,8 +197,8 @@ static int __init set_reset_devices(char *str) __setup("reset_devices", set_reset_devices); -static char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, }; -char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, }; +static const char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, }; +const char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, }; static const char *panic_later, *panic_param; extern const struct obs_kernel_param __setup_start[], __setup_end[]; @@ -809,7 +809,7 @@ static void __init do_pre_smp_initcalls(void) do_one_initcall(*fn); } -static void run_init_process(char *init_filename) +static void run_init_process(const char *init_filename) { argv_init[0] = init_filename; kernel_execve(init_filename, argv_init, envp_init); diff --git a/kernel/kmod.c b/kernel/kmod.c index 6e9b19667a8d..9cd0591c96a2 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -153,7 +153,9 @@ static int ____call_usermodehelper(void *data) goto fail; } - retval = kernel_execve(sub_info->path, sub_info->argv, sub_info->envp); + retval = kernel_execve(sub_info->path, + (const char *const *)sub_info->argv, + (const char *const *)sub_info->envp); /* Exec failed? */ fail: diff --git a/security/commoncap.c b/security/commoncap.c index 4e015996dd4d..9d172e6e330c 100644 --- a/security/commoncap.c +++ b/security/commoncap.c @@ -40,7 +40,7 @@ * * Warn if that happens, once per boot. */ -static void warn_setuid_and_fcaps_mixed(char *fname) +static void warn_setuid_and_fcaps_mixed(const char *fname) { static int warned; if (!warned) { -- cgit v1.2.3-59-g8ed1b From 1495cc9df4e81f5a8fa9b0b8f1034b14d24b7d8c Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 17 Aug 2010 21:15:46 -0700 Subject: Input: sysrq - drop tty argument from sysrq ops handlers Noone is using tty argument so let's get rid of it. Acked-by: Alan Cox Acked-by: Jason Wessel Acked-by: Greg Kroah-Hartman Signed-off-by: Dmitry Torokhov --- arch/arm/kernel/etm.c | 2 +- arch/powerpc/xmon/xmon.c | 5 ++--- arch/sparc/kernel/process_64.c | 2 +- drivers/char/sysrq.c | 42 ++++++++++++++++++++--------------------- drivers/gpu/drm/drm_fb_helper.c | 2 +- drivers/net/ibm_newemac/debug.c | 2 +- include/linux/sysrq.h | 6 +++++- kernel/debug/debug_core.c | 2 +- kernel/power/poweroff.c | 2 +- 9 files changed, 34 insertions(+), 31 deletions(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c index 56418f98cd01..33c7077174db 100644 --- a/arch/arm/kernel/etm.c +++ b/arch/arm/kernel/etm.c @@ -230,7 +230,7 @@ static void etm_dump(void) etb_lock(t); } -static void sysrq_etm_dump(int key, struct tty_struct *tty) +static void sysrq_etm_dump(int key) { dev_dbg(tracer.dev, "Dumping ETB buffer\n"); etm_dump(); diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 0554445200bf..d17d04cfb2cd 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -2880,15 +2880,14 @@ static void xmon_init(int enable) } #ifdef CONFIG_MAGIC_SYSRQ -static void sysrq_handle_xmon(int key, struct tty_struct *tty) +static void sysrq_handle_xmon(int key) { /* ensure xmon is enabled */ xmon_init(1); debugger(get_irq_regs()); } -static struct sysrq_key_op sysrq_xmon_op = -{ +static struct sysrq_key_op sysrq_xmon_op = { .handler = sysrq_handle_xmon, .help_msg = "Xmon", .action_msg = "Entering xmon", diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c index dbe81a368b45..25b01b43b40d 100644 --- a/arch/sparc/kernel/process_64.c +++ b/arch/sparc/kernel/process_64.c @@ -303,7 +303,7 @@ void arch_trigger_all_cpu_backtrace(void) #ifdef CONFIG_MAGIC_SYSRQ -static void sysrq_handle_globreg(int key, struct tty_struct *tty) +static void sysrq_handle_globreg(int key) { arch_trigger_all_cpu_backtrace(); } diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index 878ac0c2cc68..a892a3c249dd 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -76,7 +76,7 @@ static int __init sysrq_always_enabled_setup(char *str) __setup("sysrq_always_enabled", sysrq_always_enabled_setup); -static void sysrq_handle_loglevel(int key, struct tty_struct *tty) +static void sysrq_handle_loglevel(int key) { int i; @@ -93,7 +93,7 @@ static struct sysrq_key_op sysrq_loglevel_op = { }; #ifdef CONFIG_VT -static void sysrq_handle_SAK(int key, struct tty_struct *tty) +static void sysrq_handle_SAK(int key) { struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work; schedule_work(SAK_work); @@ -109,7 +109,7 @@ static struct sysrq_key_op sysrq_SAK_op = { #endif #ifdef CONFIG_VT -static void sysrq_handle_unraw(int key, struct tty_struct *tty) +static void sysrq_handle_unraw(int key) { struct kbd_struct *kbd = &kbd_table[fg_console]; @@ -126,7 +126,7 @@ static struct sysrq_key_op sysrq_unraw_op = { #define sysrq_unraw_op (*(struct sysrq_key_op *)NULL) #endif /* CONFIG_VT */ -static void sysrq_handle_crash(int key, struct tty_struct *tty) +static void sysrq_handle_crash(int key) { char *killer = NULL; @@ -141,7 +141,7 @@ static struct sysrq_key_op sysrq_crash_op = { .enable_mask = SYSRQ_ENABLE_DUMP, }; -static void sysrq_handle_reboot(int key, struct tty_struct *tty) +static void sysrq_handle_reboot(int key) { lockdep_off(); local_irq_enable(); @@ -154,7 +154,7 @@ static struct sysrq_key_op sysrq_reboot_op = { .enable_mask = SYSRQ_ENABLE_BOOT, }; -static void sysrq_handle_sync(int key, struct tty_struct *tty) +static void sysrq_handle_sync(int key) { emergency_sync(); } @@ -165,7 +165,7 @@ static struct sysrq_key_op sysrq_sync_op = { .enable_mask = SYSRQ_ENABLE_SYNC, }; -static void sysrq_handle_show_timers(int key, struct tty_struct *tty) +static void sysrq_handle_show_timers(int key) { sysrq_timer_list_show(); } @@ -176,7 +176,7 @@ static struct sysrq_key_op sysrq_show_timers_op = { .action_msg = "Show clockevent devices & pending hrtimers (no others)", }; -static void sysrq_handle_mountro(int key, struct tty_struct *tty) +static void sysrq_handle_mountro(int key) { emergency_remount(); } @@ -188,7 +188,7 @@ static struct sysrq_key_op sysrq_mountro_op = { }; #ifdef CONFIG_LOCKDEP -static void sysrq_handle_showlocks(int key, struct tty_struct *tty) +static void sysrq_handle_showlocks(int key) { debug_show_all_locks(); } @@ -226,7 +226,7 @@ static void sysrq_showregs_othercpus(struct work_struct *dummy) static DECLARE_WORK(sysrq_showallcpus, sysrq_showregs_othercpus); -static void sysrq_handle_showallcpus(int key, struct tty_struct *tty) +static void sysrq_handle_showallcpus(int key) { /* * Fall back to the workqueue based printing if the @@ -252,7 +252,7 @@ static struct sysrq_key_op sysrq_showallcpus_op = { }; #endif -static void sysrq_handle_showregs(int key, struct tty_struct *tty) +static void sysrq_handle_showregs(int key) { struct pt_regs *regs = get_irq_regs(); if (regs) @@ -266,7 +266,7 @@ static struct sysrq_key_op sysrq_showregs_op = { .enable_mask = SYSRQ_ENABLE_DUMP, }; -static void sysrq_handle_showstate(int key, struct tty_struct *tty) +static void sysrq_handle_showstate(int key) { show_state(); } @@ -277,7 +277,7 @@ static struct sysrq_key_op sysrq_showstate_op = { .enable_mask = SYSRQ_ENABLE_DUMP, }; -static void sysrq_handle_showstate_blocked(int key, struct tty_struct *tty) +static void sysrq_handle_showstate_blocked(int key) { show_state_filter(TASK_UNINTERRUPTIBLE); } @@ -291,7 +291,7 @@ static struct sysrq_key_op sysrq_showstate_blocked_op = { #ifdef CONFIG_TRACING #include -static void sysrq_ftrace_dump(int key, struct tty_struct *tty) +static void sysrq_ftrace_dump(int key) { ftrace_dump(DUMP_ALL); } @@ -305,7 +305,7 @@ static struct sysrq_key_op sysrq_ftrace_dump_op = { #define sysrq_ftrace_dump_op (*(struct sysrq_key_op *)NULL) #endif -static void sysrq_handle_showmem(int key, struct tty_struct *tty) +static void sysrq_handle_showmem(int key) { show_mem(); } @@ -330,7 +330,7 @@ static void send_sig_all(int sig) } } -static void sysrq_handle_term(int key, struct tty_struct *tty) +static void sysrq_handle_term(int key) { send_sig_all(SIGTERM); console_loglevel = 8; @@ -349,7 +349,7 @@ static void moom_callback(struct work_struct *ignored) static DECLARE_WORK(moom_work, moom_callback); -static void sysrq_handle_moom(int key, struct tty_struct *tty) +static void sysrq_handle_moom(int key) { schedule_work(&moom_work); } @@ -361,7 +361,7 @@ static struct sysrq_key_op sysrq_moom_op = { }; #ifdef CONFIG_BLOCK -static void sysrq_handle_thaw(int key, struct tty_struct *tty) +static void sysrq_handle_thaw(int key) { emergency_thaw_all(); } @@ -373,7 +373,7 @@ static struct sysrq_key_op sysrq_thaw_op = { }; #endif -static void sysrq_handle_kill(int key, struct tty_struct *tty) +static void sysrq_handle_kill(int key) { send_sig_all(SIGKILL); console_loglevel = 8; @@ -385,7 +385,7 @@ static struct sysrq_key_op sysrq_kill_op = { .enable_mask = SYSRQ_ENABLE_SIGNAL, }; -static void sysrq_handle_unrt(int key, struct tty_struct *tty) +static void sysrq_handle_unrt(int key) { normalize_rt_tasks(); } @@ -520,7 +520,7 @@ void __handle_sysrq(int key, struct tty_struct *tty, int check_mask) if (!check_mask || sysrq_on_mask(op_p->enable_mask)) { printk("%s\n", op_p->action_msg); console_loglevel = orig_log_level; - op_p->handler(key, tty); + op_p->handler(key); } else { printk("This sysrq operation is disabled.\n"); } diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index de82e201d682..5efd6d6742ec 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -369,7 +369,7 @@ static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) } static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); -static void drm_fb_helper_sysrq(int dummy1, struct tty_struct *dummy3) +static void drm_fb_helper_sysrq(int dummy1) { schedule_work(&drm_fb_helper_restore_work); } diff --git a/drivers/net/ibm_newemac/debug.c b/drivers/net/ibm_newemac/debug.c index 3995fafc1e08..8c6c1e2a8750 100644 --- a/drivers/net/ibm_newemac/debug.c +++ b/drivers/net/ibm_newemac/debug.c @@ -238,7 +238,7 @@ void emac_dbg_dump_all(void) } #if defined(CONFIG_MAGIC_SYSRQ) -static void emac_sysrq_handler(int key, struct tty_struct *tty) +static void emac_sysrq_handler(int key) { emac_dbg_dump_all(); } diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h index 609e8ca5f534..4ee650315119 100644 --- a/include/linux/sysrq.h +++ b/include/linux/sysrq.h @@ -31,7 +31,7 @@ struct tty_struct; #define SYSRQ_ENABLE_RTNICE 0x0100 struct sysrq_key_op { - void (*handler)(int, struct tty_struct *); + void (*handler)(int); char *help_msg; char *action_msg; int enable_mask; @@ -58,6 +58,10 @@ static inline void handle_sysrq(int key, struct tty_struct *tty) { } +static inline void __handle_sysrq(int key, struct tty_struct *tty, int check_mask); +{ +} + static inline int register_sysrq_key(int key, struct sysrq_key_op *op) { return -EINVAL; diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c index 3c2d4972d235..de407c78178d 100644 --- a/kernel/debug/debug_core.c +++ b/kernel/debug/debug_core.c @@ -741,7 +741,7 @@ static struct console kgdbcons = { }; #ifdef CONFIG_MAGIC_SYSRQ -static void sysrq_handle_dbg(int key, struct tty_struct *tty) +static void sysrq_handle_dbg(int key) { if (!dbg_io_ops) { printk(KERN_CRIT "ERROR: No KGDB I/O module available\n"); diff --git a/kernel/power/poweroff.c b/kernel/power/poweroff.c index e8b337006276..d52359374e85 100644 --- a/kernel/power/poweroff.c +++ b/kernel/power/poweroff.c @@ -24,7 +24,7 @@ static void do_poweroff(struct work_struct *dummy) static DECLARE_WORK(poweroff_work, do_poweroff); -static void handle_poweroff(int key, struct tty_struct *tty) +static void handle_poweroff(int key) { /* run sysrq poweroff on boot cpu */ schedule_work_on(cpumask_first(cpu_online_mask), &poweroff_work); -- cgit v1.2.3-59-g8ed1b From 25d3584797a39f57b69cd835722ac7c41113fb9a Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 16 Aug 2010 15:15:14 +0100 Subject: ARM: 6330/1: perf: reword comments relating to perf_event_do_pending This is purely a cosmetic change to the ARM perf backend because the current comments about the relationship between NMIs, interrupt context and perf_event_do_pending are misleading. This patch updates the comments so that they reflect what the code actually does (which is in line with other architectures). Acked-by: Jamie Iles Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/include/asm/perf_event.h | 2 +- arch/arm/kernel/perf_event.c | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/include/asm/perf_event.h b/arch/arm/include/asm/perf_event.h index 48837e6d8887..b5799a3b7117 100644 --- a/arch/arm/include/asm/perf_event.h +++ b/arch/arm/include/asm/perf_event.h @@ -17,7 +17,7 @@ * counter interrupts are regular interrupts and not an NMI. This * means that when we receive the interrupt we can call * perf_event_do_pending() that handles all of the work with - * interrupts enabled. + * interrupts disabled. */ static inline void set_perf_event_pending(void) diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index 417c392ddf1c..e2139256524e 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -1041,8 +1041,8 @@ armv6pmu_handle_irq(int irq_num, /* * Handle the pending perf events. * - * Note: this call *must* be run with interrupts enabled. For - * platforms that can have the PMU interrupts raised as a PMI, this + * Note: this call *must* be run with interrupts disabled. For + * platforms that can have the PMU interrupts raised as an NMI, this * will not work. */ perf_event_do_pending(); @@ -2017,8 +2017,8 @@ static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev) /* * Handle the pending perf events. * - * Note: this call *must* be run with interrupts enabled. For - * platforms that can have the PMU interrupts raised as a PMI, this + * Note: this call *must* be run with interrupts disabled. For + * platforms that can have the PMU interrupts raised as an NMI, this * will not work. */ perf_event_do_pending(); -- cgit v1.2.3-59-g8ed1b From 418cf646c9999f2f7d216b1a693c2c575ab8094c Mon Sep 17 00:00:00 2001 From: Mikael Pettersson Date: Wed, 25 Aug 2010 20:49:01 +0100 Subject: ARM: 6343/1: wire up fanotify and prlimit64 syscalls on ARM The 2.6.36-rc kernel added three new system calls: fanotify_init, fanotify_mark, and prlimit64. This patch wires them up on ARM. The only non-trivial issue here is the u64 argument to sys_fanotify_mark(), but it is the 3rd argument and thus passed in r2/r3 in both kernel and user space, so it causes no problems. Tested with a 2.6.36-rc2 EABI kernel on an ixp4xx machine. Tested-by: Anand Gadiyar Signed-off-by: Mikael Pettersson Signed-off-by: Russell King --- arch/arm/include/asm/unistd.h | 3 +++ arch/arm/kernel/calls.S | 3 +++ 2 files changed, 6 insertions(+) (limited to 'arch/arm/kernel') diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h index d02cfb683487..c891eb76c0e3 100644 --- a/arch/arm/include/asm/unistd.h +++ b/arch/arm/include/asm/unistd.h @@ -393,6 +393,9 @@ #define __NR_perf_event_open (__NR_SYSCALL_BASE+364) #define __NR_recvmmsg (__NR_SYSCALL_BASE+365) #define __NR_accept4 (__NR_SYSCALL_BASE+366) +#define __NR_fanotify_init (__NR_SYSCALL_BASE+367) +#define __NR_fanotify_mark (__NR_SYSCALL_BASE+368) +#define __NR_prlimit64 (__NR_SYSCALL_BASE+369) /* * The following SWIs are ARM private. diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index afeb71fa72cb..5c26eccef998 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -376,6 +376,9 @@ CALL(sys_perf_event_open) /* 365 */ CALL(sys_recvmmsg) CALL(sys_accept4) + CALL(sys_fanotify_init) + CALL(sys_fanotify_mark) + CALL(sys_prlimit64) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls #define syscalls_counted -- cgit v1.2.3-59-g8ed1b From 65b4711ff513767341aa1915c822de6ec0de65cb Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 2 Sep 2010 09:32:08 +0100 Subject: ARM: 6352/1: perf: fix event validation The validate_event function in the ARM perf events backend has the following problems: 1.) Events that are disabled count towards the cost. 2.) Events associated with other PMUs [for example, software events or breakpoints] do not count towards the cost, but do fail validation, causing the group to fail. This patch changes validate_event so that it ignores events in the PERF_EVENT_STATE_OFF state or that are scheduled for other PMUs. Reported-by: Pawel Moll Acked-by: Jamie Iles Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/perf_event.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index e2139256524e..ecbb0288e5dd 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -319,8 +319,8 @@ validate_event(struct cpu_hw_events *cpuc, { struct hw_perf_event fake_event = event->hw; - if (event->pmu && event->pmu != &pmu) - return 0; + if (event->pmu != &pmu || event->state <= PERF_EVENT_STATE_OFF) + return 1; return armpmu->get_event_idx(cpuc, &fake_event) >= 0; } -- cgit v1.2.3-59-g8ed1b From b2b163bb82b12bae2504a5b31399c37d099ad3cc Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 17 Sep 2010 14:56:16 +0100 Subject: ARM: prevent multiple syscall restarts Al Viro reports that calling "sys_sigsuspend(-ERESTARTNOHAND, 0, 0)" with two signals coming and being handled in kernel space results in the syscall restart being done twice. Avoid this by clearing the 'why' flag when we call the signal handling code to prevent further syscall restarts after the first. Acked-by: Al Viro Signed-off-by: Russell King --- arch/arm/kernel/entry-common.S | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index f05a35a59694..4a560d30793d 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -48,6 +48,8 @@ work_pending: beq no_work_pending mov r0, sp @ 'regs' mov r2, why @ 'syscall' + tst r1, #_TIF_SIGPENDING @ delivering a signal? + movne why, #0 @ prevent further restarts bl do_notify_resume b ret_slow_syscall @ Check work again -- cgit v1.2.3-59-g8ed1b From 653d48b22166db2d8b1515ebe6f9f0f7c95dfc86 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 17 Sep 2010 14:34:39 +0100 Subject: arm: fix really nasty sigreturn bug If a signal hits us outside of a syscall and another gets delivered when we are in sigreturn (e.g. because it had been in sa_mask for the first one and got sent to us while we'd been in the first handler), we have a chance of returning from the second handler to location one insn prior to where we ought to return. If r0 happens to contain -513 (-ERESTARTNOINTR), sigreturn will get confused into doing restart syscall song and dance. Incredible joy to debug, since it manifests as random, infrequent and very hard to reproduce double execution of instructions in userland code... The fix is simple - mark it "don't bother with restarts" in wrapper, i.e. set r8 to 0 in sys_sigreturn and sys_rt_sigreturn wrappers, suppressing the syscall restart handling on return from these guys. They can't legitimately return a restart-worthy error anyway. Testcase: #include #include #include #include #include void f(int n) { __asm__ __volatile__( "ldr r0, [%0]\n" "b 1f\n" "b 2f\n" "1:b .\n" "2:\n" : : "r"(&n)); } void handler1(int sig) { } void handler2(int sig) { raise(1); } void handler3(int sig) { exit(0); } main() { struct sigaction s = {.sa_handler = handler2}; struct itimerval t1 = { .it_value = {1} }; struct itimerval t2 = { .it_value = {2} }; signal(1, handler1); sigemptyset(&s.sa_mask); sigaddset(&s.sa_mask, 1); sigaction(SIGALRM, &s, NULL); signal(SIGVTALRM, handler3); setitimer(ITIMER_REAL, &t1, NULL); setitimer(ITIMER_VIRTUAL, &t2, NULL); f(-513); /* -ERESTARTNOINTR */ write(1, "buggered\n", 9); return 1; } Signed-off-by: Al Viro Acked-by: Russell King Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- arch/arm/kernel/entry-common.S | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index f05a35a59694..1b560825e1cf 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -418,11 +418,13 @@ ENDPROC(sys_clone_wrapper) sys_sigreturn_wrapper: add r0, sp, #S_OFF + mov why, #0 @ prevent syscall restart handling b sys_sigreturn ENDPROC(sys_sigreturn_wrapper) sys_rt_sigreturn_wrapper: add r0, sp, #S_OFF + mov why, #0 @ prevent syscall restart handling b sys_rt_sigreturn ENDPROC(sys_rt_sigreturn_wrapper) -- cgit v1.2.3-59-g8ed1b From ccdf2e1bca8a45eaf89eb142dbed3551886413fe Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 27 Sep 2010 18:12:12 +0100 Subject: ARM: 6412/1: kprobes-decode: add support for MOVW instruction The MOVW instruction moves a 16-bit immediate into the bottom halfword of the destination register. This patch ensures that kprobes leaves the 16-bit immediate intact, rather than assume a 12-bit immediate and mask out the upper 4 bits. Acked-by: Nicolas Pitre Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/kprobes-decode.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/kprobes-decode.c b/arch/arm/kernel/kprobes-decode.c index 8bccbfa693ff..2c1f0050c9c4 100644 --- a/arch/arm/kernel/kprobes-decode.c +++ b/arch/arm/kernel/kprobes-decode.c @@ -1162,11 +1162,12 @@ space_cccc_001x(kprobe_opcode_t insn, struct arch_specific_insn *asi) { /* * MSR : cccc 0011 0x10 xxxx xxxx xxxx xxxx xxxx - * Undef : cccc 0011 0x00 xxxx xxxx xxxx xxxx xxxx + * Undef : cccc 0011 0100 xxxx xxxx xxxx xxxx xxxx * ALU op with S bit and Rd == 15 : * cccc 001x xxx1 xxxx 1111 xxxx xxxx xxxx */ - if ((insn & 0x0f900000) == 0x03200000 || /* MSR & Undef */ + if ((insn & 0x0fb00000) == 0x03200000 || /* MSR */ + (insn & 0x0ff00000) == 0x03400000 || /* Undef */ (insn & 0x0e10f000) == 0x0210f000) /* ALU s-bit, R15 */ return INSN_REJECTED; @@ -1177,7 +1178,7 @@ space_cccc_001x(kprobe_opcode_t insn, struct arch_specific_insn *asi) * *S (bit 20) updates condition codes * ADC/SBC/RSC reads the C flag */ - insn &= 0xfff00fff; /* Rn = r0, Rd = r0 */ + insn &= 0xffff0fff; /* Rd = r0 */ asi->insn[0] = insn; asi->insn_handler = (insn & (1 << 20)) ? /* S-bit */ emulate_alu_imm_rwflags : emulate_alu_imm_rflags; -- cgit v1.2.3-59-g8ed1b