diff options
Diffstat (limited to 'arch/um/sys-x86_64/syscalls.c')
| -rw-r--r-- | arch/um/sys-x86_64/syscalls.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c deleted file mode 100644 index 3259a4db453..00000000000 --- a/arch/um/sys-x86_64/syscalls.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * Copyright 2003 PathScale, Inc. - * - * Licensed under the GPL - */ - -#include "linux/linkage.h" -#include "linux/slab.h" -#include "linux/shm.h" -#include "linux/utsname.h" -#include "linux/personality.h" -#include "asm/uaccess.h" -#define __FRAME_OFFSETS -#include "asm/ptrace.h" -#include "asm/unistd.h" -#include "asm/prctl.h" /* XXX This should get the constants from libc */ -#include "choose-mode.h" -#include "kern.h" - -asmlinkage long sys_uname64(struct new_utsname __user * name) -{ - int err; - down_read(&uts_sem); - err = copy_to_user(name, &system_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; -} - -#ifdef CONFIG_MODE_TT -extern int modify_ldt(int func, void *ptr, unsigned long bytecount); - -long sys_modify_ldt_tt(int func, void *ptr, unsigned long bytecount) -{ - /* XXX This should check VERIFY_WRITE depending on func, check this - * in i386 as well. - */ - if (!access_ok(VERIFY_READ, ptr, bytecount)) - return -EFAULT; - return(modify_ldt(func, ptr, bytecount)); -} -#endif - -#ifdef CONFIG_MODE_SKAS -extern int userspace_pid[]; - -#include "skas_ptrace.h" - -long sys_modify_ldt_skas(int func, void *ptr, unsigned long bytecount) -{ - struct ptrace_ldt ldt; - void *buf; - int res, n; - - buf = kmalloc(bytecount, GFP_KERNEL); - if(buf == NULL) - return(-ENOMEM); - - res = 0; - - switch(func){ - case 1: - case 0x11: - res = copy_from_user(buf, ptr, bytecount); - break; - } - - if(res != 0){ - res = -EFAULT; - goto out; - } - - ldt = ((struct ptrace_ldt) { .func = func, - .ptr = buf, - .bytecount = bytecount }); -#warning Need to look up userspace_pid by cpu - res = ptrace(PTRACE_LDT, userspace_pid[0], 0, (unsigned long) &ldt); - if(res < 0) - goto out; - - switch(func){ - case 0: - case 2: - n = res; - res = copy_to_user(ptr, buf, n); - if(res != 0) - res = -EFAULT; - else - res = n; - break; - } - - out: - kfree(buf); - return(res); -} -#endif - -long sys_modify_ldt(int func, void *ptr, unsigned long bytecount) -{ - return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func, - ptr, bytecount)); -} - -#ifdef CONFIG_MODE_TT -extern long arch_prctl(int code, unsigned long addr); - -static long arch_prctl_tt(int code, unsigned long addr) -{ - unsigned long tmp; - long ret; - - switch(code){ - case ARCH_SET_GS: - case ARCH_SET_FS: - ret = arch_prctl(code, addr); - break; - case ARCH_GET_FS: - case ARCH_GET_GS: - ret = arch_prctl(code, (unsigned long) &tmp); - if(!ret) - ret = put_user(tmp, &addr); - break; - default: - ret = -EINVAL; - break; - } - - return(ret); -} -#endif - -#ifdef CONFIG_MODE_SKAS - -/* XXX: Must also call arch_prctl in the host, beside saving the segment bases! */ -static long arch_prctl_skas(int code, unsigned long addr) -{ - long ret = 0; - - switch(code){ - case ARCH_SET_FS: - current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr; - break; - case ARCH_SET_GS: - current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr; - break; - case ARCH_GET_FS: - ret = put_user(current->thread.regs.regs.skas. - regs[FS_BASE / sizeof(unsigned long)], - (unsigned long __user *)addr); - break; - case ARCH_GET_GS: - ret = put_user(current->thread.regs.regs.skas. - regs[GS_BASE / sizeof(unsigned long)], - (unsigned long __user *)addr); - break; - default: - ret = -EINVAL; - break; - } - - return(ret); -} -#endif - -long sys_arch_prctl(int code, unsigned long addr) -{ - return(CHOOSE_MODE_PROC(arch_prctl_tt, arch_prctl_skas, code, addr)); -} - -long sys_clone(unsigned long clone_flags, unsigned long newsp, - void __user *parent_tid, void __user *child_tid) -{ - long ret; - - if (!newsp) - newsp = UPT_SP(¤t->thread.regs.regs); - current->thread.forking = 1; - ret = do_fork(clone_flags, newsp, ¤t->thread.regs, 0, parent_tid, - child_tid); - current->thread.forking = 0; - return(ret); -} |