int copy_sc_to_user_skas(int pid, void *to_ptr, void *fp, union uml_pt_regs *regs, unsigned long fault_addr, int fault_type) { struct sigcontext sc, *to = to_ptr; struct _fpstate *to_fp; unsigned long fpregs[FP_FRAME_SIZE]; int err; sc.gs = regs->skas.regs[GS]; sc.fs = regs->skas.regs[FS]; sc.es = regs->skas.regs[ES]; sc.ds = regs->skas.regs[DS]; sc.edi = regs->skas.regs[EDI]; sc.esi = regs->skas.regs[ESI]; sc.ebp = regs->skas.regs[EBP]; sc.esp = regs->skas.regs[UESP]; sc.ebx = regs->skas.regs[EBX]; sc.edx = regs->skas.regs[EDX]; sc.ecx = regs->skas.regs[ECX]; sc.eax = regs->skas.regs[EAX]; sc.eip = regs->skas.regs[EIP]; sc.cs = regs->skas.regs[CS]; sc.eflags = regs->skas.regs[EFL]; sc.esp_at_signal = regs->skas.regs[UESP]; sc.ss = regs->skas.regs[SS]; sc.cr2 = fault_addr; sc.err = TO_SC_ERR(fault_type); sc.trapno = regs->skas.trap_type; err = ptrace(PTRACE_GETFPREGS, pid, 0, fpregs); if(err < 0){ printk("copy_sc_to_user - PTRACE_GETFPREGS failed, " "errno = %d\n", errno); return(1); } to_fp = (struct _fpstate *) (fp ? (unsigned long) fp : ((unsigned long) to + sizeof(*to))); sc.fpstate = to_fp; if(err) return(err); return(copy_to_user_proc(to, &sc, sizeof(sc)) || copy_to_user_proc(to_fp, fpregs, sizeof(fpregs))); }
int os_write_file(int fd, void *buf, int count) { int n; /* Force buf into memory if it's not already. */ /* XXX This fails if buf is kernel memory */ #ifdef notdef if(copy_to_user_proc(buf, buf, buf[0])) return(-EFAULT); #endif n = write(fd, buf, count); if(n < 0) return(-errno); return(n); }
int os_read_file(int fd, void *buf, int len) { int n; /* Force buf into memory if it's not already. */ /* XXX This fails if buf is kernel memory */ #ifdef notdef if(copy_to_user_proc(buf, &c, sizeof(c))) return(-EFAULT); #endif n = read(fd, buf, len); if(n < 0) return(-errno); return(n); }