diff options
| author | Christoph Hellwig <hch@lst.de> | 2010-03-10 15:21:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-12 15:52:32 -0800 |
| commit | e28cbf22933d0c0ccaf3c4c27a1a263b41f73859 (patch) | |
| tree | a93ff48cfd97766a23b2c4f3ea86fccfc9c51d3f /arch/s390/kernel | |
| parent | baed7fc9b580bd3fb8252ff1d9b36eaf1f86b670 (diff) | |
improve sys_newuname() for compat architectures
On an architecture that supports 32-bit compat we need to override the
reported machine in uname with the 32-bit value. Instead of doing this
separately in every architecture introduce a COMPAT_UTS_MACHINE define in
<asm/compat.h> and apply it directly in sys_newuname().
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: James Morris <jmorris@namei.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/compat_wrapper.S | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/entry.h | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/sys_s390.c | 11 | ||||
| -rw-r--r-- | arch/s390/kernel/syscalls.S | 2 |
4 files changed, 2 insertions, 15 deletions
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index 30de2d0e52bb..672ce52341b4 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -547,7 +547,7 @@ sys32_setdomainname_wrapper: .globl sys32_newuname_wrapper sys32_newuname_wrapper: llgtr %r2,%r2 # struct new_utsname * - jg sys_s390_newuname # branch to system call + jg sys_newuname # branch to system call .globl compat_sys_adjtimex_wrapper compat_sys_adjtimex_wrapper: diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h index 15fd68b196c0..eb15c12ec158 100644 --- a/arch/s390/kernel/entry.h +++ b/arch/s390/kernel/entry.h @@ -24,7 +24,6 @@ int __cpuinit start_secondary(void *cpuvoid); void __init startup_init(void); void die(const char * str, struct pt_regs * regs, long err); -struct new_utsname; struct s390_mmap_arg_struct; struct fadvise64_64_args; struct old_sigaction; @@ -32,7 +31,6 @@ struct old_sigaction; long sys_mmap2(struct s390_mmap_arg_struct __user *arg); long sys_s390_ipc(uint call, int first, unsigned long second, unsigned long third, void __user *ptr); -long sys_s390_newuname(struct new_utsname __user *name); long sys_s390_personality(unsigned long personality); long sys_s390_fadvise64(int fd, u32 offset_high, u32 offset_low, size_t len, int advice); diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c index b8b78092ab7c..7b6b0f81a283 100644 --- a/arch/s390/kernel/sys_s390.c +++ b/arch/s390/kernel/sys_s390.c @@ -131,17 +131,6 @@ SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, unsigned long, second, } #ifdef CONFIG_64BIT -SYSCALL_DEFINE1(s390_newuname, struct new_utsname __user *, name) -{ - int ret = sys_newuname(name); - - if (personality(current->personality) == PER_LINUX32 && !ret) { - ret = copy_to_user(name->machine, "s390\0\0\0\0", 8); - if (ret) ret = -EFAULT; - } - return ret; -} - SYSCALL_DEFINE1(s390_personality, unsigned long, personality) { int ret; diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index 990ac8b321c8..201ce6bed34e 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -130,7 +130,7 @@ SYSCALL(sys_fsync,sys_fsync,sys32_fsync_wrapper) SYSCALL(sys_sigreturn,sys_sigreturn,sys32_sigreturn) SYSCALL(sys_clone,sys_clone,sys_clone_wrapper) /* 120 */ SYSCALL(sys_setdomainname,sys_setdomainname,sys32_setdomainname_wrapper) -SYSCALL(sys_newuname,sys_s390_newuname,sys32_newuname_wrapper) +SYSCALL(sys_newuname,sys_newuname,sys32_newuname_wrapper) NI_SYSCALL /* modify_ldt for i386 */ SYSCALL(sys_adjtimex,sys_adjtimex,compat_sys_adjtimex_wrapper) SYSCALL(sys_mprotect,sys_mprotect,sys32_mprotect_wrapper) /* 125 */ |