Messages in this thread Patch in this message | | | Date | Mon, 1 Feb 2010 19:56:24 +0100 | From | Christoph Hellwig <> | Subject | [PATCH 5/6] improve sys_newuname for compat architectures |
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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>
Index: linux-2.6/arch/ia64/ia32/ia32_entry.S =================================================================== --- linux-2.6.orig/arch/ia64/ia32/ia32_entry.S 2010-01-30 22:45:23.753022114 +0100 +++ linux-2.6/arch/ia64/ia32/ia32_entry.S 2010-01-30 22:45:24.239003746 +0100 @@ -300,7 +300,7 @@ ia32_syscall_table: data8 sys32_sigreturn data8 ia32_clone /* 120 */ data8 sys_setdomainname - data8 sys32_newuname + data8 sys_newuname data8 sys32_modify_ldt data8 compat_sys_adjtimex data8 sys32_mprotect /* 125 */ Index: linux-2.6/arch/ia64/ia32/sys_ia32.c =================================================================== --- linux-2.6.orig/arch/ia64/ia32/sys_ia32.c 2010-01-30 22:45:23.755004095 +0100 +++ linux-2.6/arch/ia64/ia32/sys_ia32.c 2010-01-30 22:45:24.240032591 +0100 @@ -1613,17 +1613,6 @@ sys32_msync (unsigned int start, unsigne } asmlinkage long -sys32_newuname (struct new_utsname __user *name) -{ - int ret = sys_newuname(name); - - if (!ret) - if (copy_to_user(name->machine, "i686\0\0\0", 8)) - ret = -EFAULT; - return ret; -} - -asmlinkage long sys32_getresuid16 (u16 __user *ruid, u16 __user *euid, u16 __user *suid) { uid_t a, b, c; Index: linux-2.6/arch/ia64/include/asm/compat.h =================================================================== --- linux-2.6.orig/arch/ia64/include/asm/compat.h 2010-01-30 22:40:32.975254480 +0100 +++ linux-2.6/arch/ia64/include/asm/compat.h 2010-01-30 22:45:24.245003816 +0100 @@ -5,7 +5,8 @@ */ #include <linux/types.h> -#define COMPAT_USER_HZ 100 +#define COMPAT_USER_HZ 100 +#define COMPAT_UTS_MACHINE "i686\0\0\0" typedef u32 compat_size_t; typedef s32 compat_ssize_t; Index: linux-2.6/arch/mips/include/asm/compat.h =================================================================== --- linux-2.6.orig/arch/mips/include/asm/compat.h 2010-01-30 22:40:32.984272080 +0100 +++ linux-2.6/arch/mips/include/asm/compat.h 2010-01-30 22:45:24.246044674 +0100 @@ -8,7 +8,8 @@ #include <asm/page.h> #include <asm/ptrace.h> -#define COMPAT_USER_HZ 100 +#define COMPAT_USER_HZ 100 +#define COMPAT_UTS_MACHINE "mips\0\0\0" typedef u32 compat_size_t; typedef s32 compat_ssize_t; Index: linux-2.6/arch/mips/kernel/linux32.c =================================================================== --- linux-2.6.orig/arch/mips/kernel/linux32.c 2010-01-30 22:45:23.759025955 +0100 +++ linux-2.6/arch/mips/kernel/linux32.c 2010-01-30 22:45:24.248003537 +0100 @@ -250,22 +250,6 @@ SYSCALL_DEFINE5(n32_msgrcv, int, msqid, } #endif -SYSCALL_DEFINE1(32_newuname, struct new_utsname __user *, name) -{ - int ret = 0; - - down_read(&uts_sem); - if (copy_to_user(name, utsname(), sizeof *name)) - ret = -EFAULT; - up_read(&uts_sem); - - if (current->personality == PER_LINUX32 && !ret) - if (copy_to_user(name->machine, "mips\0\0\0", 8)) - ret = -EFAULT; - - return ret; -} - SYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd, compat_off_t __user *, offset, s32, count) { Index: linux-2.6/arch/mips/kernel/scall64-n32.S =================================================================== --- linux-2.6.orig/arch/mips/kernel/scall64-n32.S 2010-01-30 22:45:23.766003745 +0100 +++ linux-2.6/arch/mips/kernel/scall64-n32.S 2010-01-30 22:45:24.253032801 +0100 @@ -181,7 +181,7 @@ EXPORT(sysn32_call_table) PTR sys_exit PTR compat_sys_wait4 PTR sys_kill /* 6060 */ - PTR sys_32_newuname + PTR sys_newuname PTR sys_semget PTR sys_semop PTR sys_n32_semctl Index: linux-2.6/arch/mips/kernel/scall64-o32.S =================================================================== --- linux-2.6.orig/arch/mips/kernel/scall64-o32.S 2010-01-30 22:45:23.771026374 +0100 +++ linux-2.6/arch/mips/kernel/scall64-o32.S 2010-01-30 22:45:24.260033709 +0100 @@ -325,7 +325,7 @@ sys_call_table: PTR sys32_sigreturn PTR sys32_clone /* 4120 */ PTR sys_setdomainname - PTR sys_32_newuname + PTR sys_newuname PTR sys_ni_syscall /* sys_modify_ldt */ PTR compat_sys_adjtimex PTR sys_mprotect /* 4125 */ Index: linux-2.6/arch/powerpc/include/asm/syscalls.h =================================================================== --- linux-2.6.orig/arch/powerpc/include/asm/syscalls.h 2010-01-30 22:45:23.787005771 +0100 +++ linux-2.6/arch/powerpc/include/asm/syscalls.h 2010-01-30 22:45:24.266255876 +0100 @@ -7,7 +7,6 @@ #include <linux/types.h> #include <asm/signal.h> -struct new_utsname; struct pt_regs; struct rtas_args; struct sigaction; @@ -37,7 +36,6 @@ asmlinkage long sys_rt_sigaction(int sig struct sigaction __user *oact, size_t sigsetsize); asmlinkage int ppc_rtas(struct rtas_args __user *uargs); asmlinkage time_t sys64_time(time_t __user * tloc); -asmlinkage long ppc_newuname(struct new_utsname __user * name); asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); Index: linux-2.6/arch/powerpc/include/asm/systbl.h =================================================================== --- linux-2.6.orig/arch/powerpc/include/asm/systbl.h 2010-01-30 22:45:23.790282206 +0100 +++ linux-2.6/arch/powerpc/include/asm/systbl.h 2010-01-30 22:45:24.269283674 +0100 @@ -125,7 +125,7 @@ SYSCALL_SPU(fsync) SYS32ONLY(sigreturn) PPC_SYS(clone) COMPAT_SYS_SPU(setdomainname) -PPC_SYS_SPU(newuname) +SYSCALL_SPU(newuname) SYSCALL(ni_syscall) COMPAT_SYS_SPU(adjtimex) SYSCALL_SPU(mprotect) Index: linux-2.6/kernel/sys.c =================================================================== --- linux-2.6.orig/kernel/sys.c 2010-01-30 22:40:33.289254130 +0100 +++ linux-2.6/kernel/sys.c 2010-01-30 22:53:52.564256226 +0100 @@ -33,6 +33,7 @@ #include <linux/task_io_accounting_ops.h> #include <linux/seccomp.h> #include <linux/cpu.h> +#include <linux/personality.h> #include <linux/ptrace.h> #include <linux/fs_struct.h> @@ -1118,6 +1119,15 @@ out: DECLARE_RWSEM(uts_sem); +#ifdef COMPAT_UTS_MACHINE +#define override_architecture(name) \ + (current->personality == PER_LINUX32 && \ + copy_to_user(name->machine, COMPAT_UTS_MACHINE, \ + sizeof(COMPAT_UTS_MACHINE))) +#else +#define override_architecture(name) 0 +#endif + SYSCALL_DEFINE1(newuname, struct new_utsname __user *, name) { int errno = 0; @@ -1126,6 +1136,9 @@ SYSCALL_DEFINE1(newuname, struct new_uts if (copy_to_user(name, utsname(), sizeof *name)) errno = -EFAULT; up_read(&uts_sem); + + if (!errno && override_architecture(name)) + errno = -EFAULT; return errno; } Index: linux-2.6/arch/parisc/include/asm/compat.h =================================================================== --- linux-2.6.orig/arch/parisc/include/asm/compat.h 2010-01-30 22:40:33.089004864 +0100 +++ linux-2.6/arch/parisc/include/asm/compat.h 2010-01-30 22:45:24.284256365 +0100 @@ -7,7 +7,8 @@ #include <linux/sched.h> #include <linux/thread_info.h> -#define COMPAT_USER_HZ 100 +#define COMPAT_USER_HZ 100 +#define COMPAT_UTS_MACHINE "parisc\0\0" typedef u32 compat_size_t; typedef s32 compat_ssize_t; Index: linux-2.6/arch/parisc/kernel/sys_parisc.c =================================================================== --- linux-2.6.orig/arch/parisc/kernel/sys_parisc.c 2010-01-30 22:45:23.777005980 +0100 +++ linux-2.6/arch/parisc/kernel/sys_parisc.c 2010-01-30 22:45:24.288256715 +0100 @@ -219,18 +219,3 @@ asmlinkage int sys_free_hugepages(unsign { return -EINVAL; } - -long parisc_newuname(struct new_utsname __user *name) -{ - int err = sys_newuname(name); - -#ifdef CONFIG_COMPAT - if (!err && personality(current->personality) == PER_LINUX32) { - if (__put_user(0, name->machine + 6) || - __put_user(0, name->machine + 7)) - err = -EFAULT; - } -#endif - - return err; -} Index: linux-2.6/arch/parisc/kernel/syscall_table.S =================================================================== --- linux-2.6.orig/arch/parisc/kernel/syscall_table.S 2010-01-30 22:45:23.781068559 +0100 +++ linux-2.6/arch/parisc/kernel/syscall_table.S 2010-01-30 22:45:24.292034058 +0100 @@ -127,7 +127,7 @@ ENTRY_SAME(socketpair) ENTRY_SAME(setpgid) ENTRY_SAME(send) - ENTRY_OURS(newuname) + ENTRY_SAME(newuname) ENTRY_SAME(umask) /* 60 */ ENTRY_SAME(chroot) ENTRY_COMP(ustat) Index: linux-2.6/arch/powerpc/include/asm/compat.h =================================================================== --- linux-2.6.orig/arch/powerpc/include/asm/compat.h 2010-01-30 22:40:33.059254829 +0100 +++ linux-2.6/arch/powerpc/include/asm/compat.h 2010-01-30 22:45:24.296024909 +0100 @@ -7,7 +7,8 @@ #include <linux/types.h> #include <linux/sched.h> -#define COMPAT_USER_HZ 100 +#define COMPAT_USER_HZ 100 +#define COMPAT_UTS_MACHINE "ppc\0\0" typedef u32 compat_size_t; typedef s32 compat_ssize_t; Index: linux-2.6/arch/powerpc/kernel/syscalls.c =================================================================== --- linux-2.6.orig/arch/powerpc/kernel/syscalls.c 2010-01-30 22:45:23.795267190 +0100 +++ linux-2.6/arch/powerpc/kernel/syscalls.c 2010-01-30 22:53:35.371004026 +0100 @@ -117,19 +117,6 @@ static inline int override_machine(char return 0; } -long ppc_newuname(struct new_utsname __user * name) -{ - int err = 0; - - down_read(&uts_sem); - if (copy_to_user(name, utsname(), sizeof(*name))) - err = -EFAULT; - up_read(&uts_sem); - if (!err) - err = override_machine(name->machine); - return err; -} - int sys_uname(struct old_utsname __user *name) { int err = 0; Index: linux-2.6/arch/s390/include/asm/compat.h =================================================================== --- linux-2.6.orig/arch/s390/include/asm/compat.h 2010-01-30 22:40:33.128003886 +0100 +++ linux-2.6/arch/s390/include/asm/compat.h 2010-01-30 22:45:24.302033569 +0100 @@ -35,7 +35,8 @@ extern long psw32_user_bits; -#define COMPAT_USER_HZ 100 +#define COMPAT_USER_HZ 100 +#define COMPAT_UTS_MACHINE "s390\0\0\0\0" typedef u32 compat_size_t; typedef s32 compat_ssize_t; Index: linux-2.6/arch/s390/kernel/compat_wrapper.S =================================================================== --- linux-2.6.orig/arch/s390/kernel/compat_wrapper.S 2010-01-30 22:45:23.800256364 +0100 +++ linux-2.6/arch/s390/kernel/compat_wrapper.S 2010-01-30 22:45:24.306033290 +0100 @@ -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: Index: linux-2.6/arch/s390/kernel/entry.h =================================================================== --- linux-2.6.orig/arch/s390/kernel/entry.h 2010-01-30 22:45:23.808255247 +0100 +++ linux-2.6/arch/s390/kernel/entry.h 2010-01-30 22:45:24.312035804 +0100 @@ -24,7 +24,6 @@ int __cpuinit start_secondary(void *cpuv 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_fadvise64(int fd, u32 offset_high, u32 offset_low, size_t len, int advice); long sys_s390_fadvise64_64(struct fadvise64_64_args __user *args); Index: linux-2.6/arch/s390/kernel/sys_s390.c =================================================================== --- linux-2.6.orig/arch/s390/kernel/sys_s390.c 2010-01-30 22:45:23.811254758 +0100 +++ linux-2.6/arch/s390/kernel/sys_s390.c 2010-01-30 22:45:24.314067722 +0100 @@ -130,19 +130,6 @@ SYSCALL_DEFINE5(s390_ipc, uint, call, in return -EINVAL; } -#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; -} -#endif /* CONFIG_64BIT */ - /* * Wrapper function for sys_fadvise64/fadvise64_64 */ Index: linux-2.6/arch/s390/kernel/syscalls.S =================================================================== --- linux-2.6.orig/arch/s390/kernel/syscalls.S 2010-01-30 22:45:23.814275501 +0100 +++ linux-2.6/arch/s390/kernel/syscalls.S 2010-01-30 22:45:24.316005632 +0100 @@ -130,7 +130,7 @@ SYSCALL(sys_fsync,sys_fsync,sys32_fsync_ 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 */ Index: linux-2.6/arch/sparc/include/asm/compat.h =================================================================== --- linux-2.6.orig/arch/sparc/include/asm/compat.h 2010-01-30 22:40:33.182257064 +0100 +++ linux-2.6/arch/sparc/include/asm/compat.h 2010-01-30 22:45:24.319006261 +0100 @@ -5,7 +5,8 @@ */ #include <linux/types.h> -#define COMPAT_USER_HZ 100 +#define COMPAT_USER_HZ 100 +#define COMPAT_UTS_MACHINE "sparc\0\0" typedef u32 compat_size_t; typedef s32 compat_ssize_t; Index: linux-2.6/arch/sparc/kernel/sys_sparc_64.c =================================================================== --- linux-2.6.orig/arch/sparc/kernel/sys_sparc_64.c 2010-01-30 22:45:23.819028330 +0100 +++ linux-2.6/arch/sparc/kernel/sys_sparc_64.c 2010-01-30 22:45:24.323006331 +0100 @@ -511,17 +511,6 @@ out: return err; } -SYSCALL_DEFINE1(sparc64_newuname, struct new_utsname __user *, name) -{ - int ret = sys_newuname(name); - - if (current->personality == PER_LINUX32 && !ret) { - ret = (copy_to_user(name->machine, "sparc\0\0", 8) - ? -EFAULT : 0); - } - return ret; -} - int sparc_mmap_check(unsigned long addr, unsigned long len) { if (test_thread_flag(TIF_32BIT)) { Index: linux-2.6/arch/sparc/kernel/systbls.h =================================================================== --- linux-2.6.orig/arch/sparc/kernel/systbls.h 2010-01-30 22:45:23.821271031 +0100 +++ linux-2.6/arch/sparc/kernel/systbls.h 2010-01-30 22:45:24.324006540 +0100 @@ -6,15 +6,12 @@ #include <asm/utrap.h> #include <asm/signal.h> -struct new_utsname; - extern asmlinkage unsigned long sys_getpagesize(void); extern asmlinkage long sparc_pipe(struct pt_regs *regs); extern asmlinkage long sys_sparc_ipc(unsigned int call, int first, unsigned long second, unsigned long third, void __user *ptr, long fifth); -extern asmlinkage long sparc64_newuname(struct new_utsname __user *name); extern asmlinkage long sys64_munmap(unsigned long addr, size_t len); extern asmlinkage unsigned long sys64_mremap(unsigned long addr, unsigned long old_len, Index: linux-2.6/arch/sparc/kernel/systbls_64.S =================================================================== --- linux-2.6.orig/arch/sparc/kernel/systbls_64.S 2010-01-30 22:45:23.822272987 +0100 +++ linux-2.6/arch/sparc/kernel/systbls_64.S 2010-01-30 22:45:24.326005283 +0100 @@ -55,7 +55,7 @@ sys_call_table32: /*170*/ .word sys32_lsetxattr, sys32_fsetxattr, sys_getxattr, sys_lgetxattr, compat_sys_getdents .word sys_setsid, sys_fchdir, sys32_fgetxattr, sys_listxattr, sys_llistxattr /*180*/ .word sys32_flistxattr, sys_removexattr, sys_lremovexattr, compat_sys_sigpending, sys_ni_syscall - .word sys32_setpgid, sys32_fremovexattr, sys32_tkill, sys32_exit_group, sys_sparc64_newuname + .word sys32_setpgid, sys32_fremovexattr, sys32_tkill, sys32_exit_group, sys_newuname /*190*/ .word sys32_init_module, sys_personality, sys_remap_file_pages, sys32_epoll_create, sys32_epoll_ctl .word sys32_epoll_wait, sys32_ioprio_set, sys_getppid, sys32_sigaction, sys_sgetmask /*200*/ .word sys32_ssetmask, sys_sigsuspend, compat_sys_newlstat, sys_uselib, compat_sys_old_readdir @@ -130,7 +130,7 @@ sys_call_table: /*170*/ .word sys_lsetxattr, sys_fsetxattr, sys_getxattr, sys_lgetxattr, sys_getdents .word sys_setsid, sys_fchdir, sys_fgetxattr, sys_listxattr, sys_llistxattr /*180*/ .word sys_flistxattr, sys_removexattr, sys_lremovexattr, sys_nis_syscall, sys_ni_syscall - .word sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sys_sparc64_newuname + .word sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sys_newuname /*190*/ .word sys_init_module, sys_personality, sys_remap_file_pages, sys_epoll_create, sys_epoll_ctl .word sys_epoll_wait, sys_ioprio_set, sys_getppid, sys_nis_syscall, sys_sgetmask /*200*/ .word sys_ssetmask, sys_nis_syscall, sys_newlstat, sys_uselib, sys_nis_syscall Index: linux-2.6/arch/x86/include/asm/compat.h =================================================================== --- linux-2.6.orig/arch/x86/include/asm/compat.h 2010-01-30 22:40:33.222274175 +0100 +++ linux-2.6/arch/x86/include/asm/compat.h 2010-01-30 22:45:24.330006470 +0100 @@ -8,7 +8,8 @@ #include <linux/sched.h> #include <asm/user32.h> -#define COMPAT_USER_HZ 100 +#define COMPAT_USER_HZ 100 +#define COMPAT_UTS_MACHINE "i686\0\0" typedef u32 compat_size_t; typedef s32 compat_ssize_t; Index: linux-2.6/arch/x86/include/asm/syscalls.h =================================================================== --- linux-2.6.orig/arch/x86/include/asm/syscalls.h 2010-01-30 22:45:23.148006888 +0100 +++ linux-2.6/arch/x86/include/asm/syscalls.h 2010-01-30 22:53:35.428260346 +0100 @@ -68,11 +68,8 @@ int sys_vm86(unsigned long, unsigned lon long sys_arch_prctl(int, unsigned long); /* kernel/sys_x86_64.c */ -struct new_utsname; - asmlinkage long sys_mmap(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); -asmlinkage long sys_uname(struct new_utsname __user *); #endif /* CONFIG_X86_32 */ #endif /* _ASM_X86_SYSCALLS_H */ Index: linux-2.6/arch/x86/include/asm/unistd_64.h =================================================================== --- linux-2.6.orig/arch/x86/include/asm/unistd_64.h 2010-01-30 22:40:33.248253641 +0100 +++ linux-2.6/arch/x86/include/asm/unistd_64.h 2010-01-30 22:53:35.445254619 +0100 @@ -146,7 +146,7 @@ __SYSCALL(__NR_wait4, sys_wait4) #define __NR_kill 62 __SYSCALL(__NR_kill, sys_kill) #define __NR_uname 63 -__SYSCALL(__NR_uname, sys_uname) +__SYSCALL(__NR_uname, sys_newuname) #define __NR_semget 64 __SYSCALL(__NR_semget, sys_semget) Index: linux-2.6/arch/x86/kernel/sys_x86_64.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/sys_x86_64.c 2010-01-30 22:40:33.260275432 +0100 +++ linux-2.6/arch/x86/kernel/sys_x86_64.c 2010-01-30 22:45:24.334281509 +0100 @@ -209,15 +209,3 @@ bottomup: return addr; } - - -SYSCALL_DEFINE1(uname, struct new_utsname __user *, name) -{ - int err; - down_read(&uts_sem); - err = copy_to_user(name, utsname(), sizeof(*name)); - up_read(&uts_sem); - if (personality(current->personality) == PER_LINUX32) - err |= copy_to_user(&name->machine, "i686", 5); - return err ? -EFAULT : 0; -} Index: linux-2.6/arch/um/sys-x86_64/syscall_table.c =================================================================== --- linux-2.6.orig/arch/um/sys-x86_64/syscall_table.c 2010-01-30 22:40:33.270254200 +0100 +++ linux-2.6/arch/um/sys-x86_64/syscall_table.c 2010-01-30 22:45:24.335264397 +0100 @@ -26,11 +26,6 @@ /* On UML we call it this way ("old" means it's not mmap2) */ #define sys_mmap old_mmap -/* - * On x86-64 sys_uname is actually sys_newuname plus a compatibility trick. - * See arch/x86_64/kernel/sys_x86_64.c - */ -#define sys_uname sys_uname64 #define stub_clone sys_clone #define stub_fork sys_fork Index: linux-2.6/arch/um/sys-x86_64/syscalls.c =================================================================== --- linux-2.6.orig/arch/um/sys-x86_64/syscalls.c 2010-01-30 22:40:33.280254480 +0100 +++ linux-2.6/arch/um/sys-x86_64/syscalls.c 2010-01-30 22:45:24.340274594 +0100 @@ -12,20 +12,6 @@ #include "asm/uaccess.h" #include "os.h" -asmlinkage long sys_uname64(struct new_utsname __user * name) -{ - int err; - - down_read(&uts_sem); - err = copy_to_user(name, utsname(), sizeof (*name)); - up_read(&uts_sem); - - if (personality(current->personality) == PER_LINUX32) - err |= copy_to_user(&name->machine, "i686", 5); - - return err ? -EFAULT : 0; -} - long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr) { unsigned long *ptr = addr, tmp;
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