/* $NetBSD: linux_machdep.c,v 1.47.2.4 2001/01/05 17:35:23 bouyer Exp $ */ /*- * Copyright (c) 1995, 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Frank van der Linden. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #if defined(KERNEL) && !defined(_LKM) #include "opt_vm86.h" #include "opt_user_ldt.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * To see whether wscons is configured (for virtual console ioctl calls). */ #if defined(_KERNEL) && !defined(_LKM) #include "wsdisplay.h" #endif #if (NWSDISPLAY > 0) #include #include #include #if defined(_KERNEL) && !defined(_LKM) #include "opt_xserver.h" #endif #endif #ifdef USER_LDT #include int linux_read_ldt __P((struct proc *, struct linux_sys_modify_ldt_args *, register_t *)); int linux_write_ldt __P((struct proc *, struct linux_sys_modify_ldt_args *, register_t *)); #endif static struct biosdisk_info *fd2biosinfo __P((struct proc *, struct file *)); extern struct disklist *i386_alldisks; extern const char *findblkname __P((int)); /* * Deal with some i386-specific things in the Linux emulation code. */ void linux_setregs(p, epp, stack) struct proc *p; struct exec_package *epp; u_long stack; { struct pcb *pcb = &p->p_addr->u_pcb; setregs(p, epp, stack); pcb->pcb_savefpu.sv_env.en_cw = __Linux_NPXCW__; } /* * Send an interrupt to process. * * Stack is set up to allow sigcode stored * in u. to call routine, followed by kcall * to sigreturn routine below. After sigreturn * resets the signal mask, the stack, and the * frame pointer, it returns to the user * specified pc, psl. */ void linux_sendsig(catcher, sig, mask, code) sig_t catcher; int sig; sigset_t *mask; u_long code; { struct proc *p = curproc; struct trapframe *tf; struct linux_sigframe *fp, frame; tf = p->p_md.md_regs; /* Allocate space for the signal handler context. */ /* XXX Linux doesn't support the signal stack. */ fp = (struct linux_sigframe *)tf->tf_esp; fp--; /* Build stack frame for signal trampoline. */ frame.sf_handler = catcher; frame.sf_sig = native_to_linux_sig[sig]; /* Save register context. */ #ifdef VM86 if (tf->tf_eflags & PSL_VM) { frame.sf_sc.sc_gs = tf->tf_vm86_gs; frame.sf_sc.sc_fs = tf->tf_vm86_fs; frame.sf_sc.sc_es = tf->tf_vm86_es; frame.sf_sc.sc_ds = tf->tf_vm86_ds; frame.sf_sc.sc_eflags = get_vflags(p); } else #endif { __asm("movl %%gs,%w0" : "=r" (frame.sf_sc.sc_gs)); __asm("movl %%fs,%w0" : "=r" (frame.sf_sc.sc_fs)); frame.sf_sc.sc_es = tf->tf_es; frame.sf_sc.sc_ds = tf->tf_ds; frame.sf_sc.sc_eflags = tf->tf_eflags; } frame.sf_sc.sc_edi = tf->tf_edi; frame.sf_sc.sc_esi = tf->tf_esi; frame.sf_sc.sc_ebp = tf->tf_ebp; frame.sf_sc.sc_ebx = tf->tf_ebx; frame.sf_sc.sc_edx = tf->tf_edx; frame.sf_sc.sc_ecx = tf->tf_ecx; frame.sf_sc.sc_eax = tf->tf_eax; frame.sf_sc.sc_eip = tf->tf_eip; frame.sf_sc.sc_cs = tf->tf_cs; frame.sf_sc.sc_esp_at_signal = tf->tf_esp; frame.sf_sc.sc_ss = tf->tf_ss; frame.sf_sc.sc_err = tf->tf_err; frame.sf_sc.sc_trapno = tf->tf_trapno; /* Save signal stack. */ /* XXX Linux doesn't support the signal stack. */ /* Save signal mask. */ native_to_linux_old_sigset(mask, &frame.sf_sc.sc_mask); if (copyout(&frame, fp, sizeof(frame)) != 0) { /* * Process has trashed its stack; give it an illegal * instruction to halt it in its tracks. */ sigexit(p, SIGILL); /* NOTREACHED */ } /* * Build context to run handler in. */ tf->tf_es = GSEL(GUDATA_SEL, SEL_UPL); tf->tf_ds = GSEL(GUDATA_SEL, SEL_UPL); tf->tf_eip = (int)p->p_sigctx.ps_sigcode; tf->tf_cs = GSEL(GUCODE_SEL, SEL_UPL); tf->tf_eflags &= ~(PSL_T|PSL_VM|PSL_AC); tf->tf_esp = (int)fp; tf->tf_ss = GSEL(GUDATA_SEL, SEL_UPL); /* Remember that we're now on the signal stack. */ /* XXX Linux doesn't support the signal stack. */ } /* * System call to cleanup state after a signal * has been taken. Reset signal mask and * stack state from context left by sendsig (above). * Return to previous pc and psl as specified by * context left by sendsig. Check carefully to * make sure that the user has not modified the * psl to gain improper privileges or to cause * a machine fault. */ int linux_sys_rt_sigreturn(p, v, retval) struct proc *p; void *v; register_t *retval; { /* XXX XAX write me */ return(ENOSYS); } int linux_sys_sigreturn(p, v, retval) struct proc *p; void *v; register_t *retval; { struct linux_sys_sigreturn_args /* { syscallarg(struct linux_sigcontext *) scp; } */ *uap = v; struct linux_sigcontext *scp, context; struct trapframe *tf; sigset_t mask; /* * The trampoline code hands us the context. * It is unsafe to keep track of it ourselves, in the event that a * program jumps out of a signal handler. */ scp = SCARG(uap, scp); if (copyin((caddr_t)scp, &context, sizeof(*scp)) != 0) return (EFAULT); /* Restore register context. */ tf = p->p_md.md_regs; #ifdef VM86 if (context.sc_eflags & PSL_VM) { tf->tf_vm86_gs = context.sc_gs; tf->tf_vm86_fs = context.sc_fs; tf->tf_vm86_es = context.sc_es; tf->tf_vm86_ds = context.sc_ds; set_vflags(p, context.sc_eflags); } else #endif { /* * Check for security violations. If we're returning to * protected mode, the CPU will validate the segment registers * automatically and generate a trap on violations. We handle * the trap, rather than doing all of the checking here. */ if (((context.sc_eflags ^ tf->tf_eflags) & PSL_USERSTATIC) != 0 || !USERMODE(context.sc_cs, context.sc_eflags)) return (EINVAL); /* %fs and %gs were restored by the trampoline. */ tf->tf_es = context.sc_es; tf->tf_ds = context.sc_ds; tf->tf_eflags = context.sc_eflags; } tf->tf_edi = context.sc_edi; tf->tf_esi = context.sc_esi; tf->tf_ebp = context.sc_ebp; tf->tf_ebx = context.sc_ebx; tf->tf_edx = context.sc_edx; tf->tf_ecx = context.sc_ecx; tf->tf_eax = context.sc_eax; tf->tf_eip = context.sc_eip; tf->tf_cs = context.sc_cs; tf->tf_esp = context.sc_esp_at_signal; tf->tf_ss = context.sc_ss; /* Restore signal stack. */ p->p_sigctx.ps_sigstk.ss_flags &= ~SS_ONSTACK; /* Restore signal mask. */ linux_old_to_native_sigset(&context.sc_mask, &mask); (void) sigprocmask1(p, SIG_SETMASK, &mask, 0); return (EJUSTRETURN); } #ifdef USER_LDT int linux_read_ldt(p, uap, retval) struct proc *p; struct linux_sys_modify_ldt_args /* { syscallarg(int) func; syscallarg(void *) ptr; syscallarg(size_t) bytecount; } */ *uap; register_t *retval; { struct i386_get_ldt_args gl; int error; caddr_t sg; char *parms; sg = stackgap_init(p->p_emul); gl.start = 0; gl.desc = SCARG(uap, ptr); gl.num = SCARG(uap, bytecount) / sizeof(union descriptor); parms = stackgap_alloc(&sg, sizeof(gl)); if ((error = copyout(&gl, parms, sizeof(gl))) != 0) return (error); if ((error = i386_get_ldt(p, parms, retval)) != 0) return (error); *retval *= sizeof(union descriptor); return (0); } struct linux_ldt_info { u_int entry_number; u_long base_addr; u_int limit; u_int seg_32bit:1; u_int contents:2; u_int read_exec_only:1; u_int limit_in_pages:1; u_int seg_not_present:1; }; int linux_write_ldt(p, uap, retval) struct proc *p; struct linux_sys_modify_ldt_args /* { syscallarg(int) func; syscallarg(void *) ptr; syscallarg(size_t) bytecount; } */ *uap; register_t *retval; { struct linux_ldt_info ldt_info; struct segment_descriptor sd; struct i386_set_ldt_args sl; int error; caddr_t sg; char *parms; if (SCARG(uap, bytecount) != sizeof(ldt_info)) return (EINVAL); if ((error = copyin(SCARG(uap, ptr), &ldt_info, sizeof(ldt_info))) != 0) return error; if (ldt_info.contents == 3) return (EINVAL); sg = stackgap_init(p->p_emul); sd.sd_lobase = ldt_info.base_addr & 0xffffff; sd.sd_hibase = (ldt_info.base_addr >> 24) & 0xff; sd.sd_lolimit = ldt_info.limit & 0xffff; sd.sd_hilimit = (ldt_info.limit >> 16) & 0xf; sd.sd_type = 16 | (ldt_info.contents << 2) | (!ldt_info.read_exec_only << 1); sd.sd_dpl = SEL_UPL; sd.sd_p = !ldt_info.seg_not_present; sd.sd_def32 = ldt_info.seg_32bit; sd.sd_gran = ldt_info.limit_in_pages; sl.start = ldt_info.entry_number; sl.desc = stackgap_alloc(&sg, sizeof(sd)); sl.num = 1; #if 0 printf("linux_write_ldt: idx=%d, base=%x, limit=%x\n", ldt_info.entry_number, ldt_info.base_addr, ldt_info.limit); #endif parms = stackgap_alloc(&sg, sizeof(sl)); if ((error = copyout(&sd, sl.desc, sizeof(sd))) != 0) return (error); if ((error = copyout(&sl, parms, sizeof(sl))) != 0) return (error); if ((error = i386_set_ldt(p, parms, retval)) != 0) return (error); *retval = 0; return (0); } #endif /* USER_LDT */ int linux_sys_modify_ldt(p, v, retval) struct proc *p; void *v; register_t *retval; { struct linux_sys_modify_ldt_args /* { syscallarg(int) func; syscallarg(void *) ptr; syscallarg(size_t) bytecount; } */ *uap = v; switch (SCARG(uap, func)) { #ifdef USER_LDT case 0: return (linux_read_ldt(p, uap, retval)); case 1: return (linux_write_ldt(p, uap, retval)); #endif /* USER_LDT */ default: return (ENOSYS); } } /* * XXX Pathetic hack to make svgalib work. This will fake the major * device number of an opened VT so that svgalib likes it. grmbl. * Should probably do it 'wrong the right way' and use a mapping * array for all major device numbers, and map linux_mknod too. */ dev_t linux_fakedev(dev) dev_t dev; { #if (NWSDISPLAY > 0) if (major(dev) == NETBSD_WSCONS_MAJOR) return makedev(LINUX_CONS_MAJOR, (minor(dev) + 1)); #endif return dev; } #if (NWSDISPLAY > 0) /* * That's not complete, but enough to get an X server running. */ #define NR_KEYS 128 static u_short plain_map[NR_KEYS] = { 0x0200, 0x001b, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x0030, 0x002d, 0x003d, 0x007f, 0x0009, 0x0b71, 0x0b77, 0x0b65, 0x0b72, 0x0b74, 0x0b79, 0x0b75, 0x0b69, 0x0b6f, 0x0b70, 0x005b, 0x005d, 0x0201, 0x0702, 0x0b61, 0x0b73, 0x0b64, 0x0b66, 0x0b67, 0x0b68, 0x0b6a, 0x0b6b, 0x0b6c, 0x003b, 0x0027, 0x0060, 0x0700, 0x005c, 0x0b7a, 0x0b78, 0x0b63, 0x0b76, 0x0b62, 0x0b6e, 0x0b6d, 0x002c, 0x002e, 0x002f, 0x0700, 0x030c, 0x0703, 0x0020, 0x0207, 0x0100, 0x0101, 0x0102, 0x0103, 0x0104, 0x0105, 0x0106, 0x0107, 0x0108, 0x0109, 0x0208, 0x0209, 0x0307, 0x0308, 0x0309, 0x030b, 0x0304, 0x0305, 0x0306, 0x030a, 0x0301, 0x0302, 0x0303, 0x0300, 0x0310, 0x0206, 0x0200, 0x003c, 0x010a, 0x010b, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x030e, 0x0702, 0x030d, 0x001c, 0x0701, 0x0205, 0x0114, 0x0603, 0x0118, 0x0601, 0x0602, 0x0117, 0x0600, 0x0119, 0x0115, 0x0116, 0x011a, 0x010c, 0x010d, 0x011b, 0x011c, 0x0110, 0x0311, 0x011d, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, }, shift_map[NR_KEYS] = { 0x0200, 0x001b, 0x0021, 0x0040, 0x0023, 0x0024, 0x0025, 0x005e, 0x0026, 0x002a, 0x0028, 0x0029, 0x005f, 0x002b, 0x007f, 0x0009, 0x0b51, 0x0b57, 0x0b45, 0x0b52, 0x0b54, 0x0b59, 0x0b55, 0x0b49, 0x0b4f, 0x0b50, 0x007b, 0x007d, 0x0201, 0x0702, 0x0b41, 0x0b53, 0x0b44, 0x0b46, 0x0b47, 0x0b48, 0x0b4a, 0x0b4b, 0x0b4c, 0x003a, 0x0022, 0x007e, 0x0700, 0x007c, 0x0b5a, 0x0b58, 0x0b43, 0x0b56, 0x0b42, 0x0b4e, 0x0b4d, 0x003c, 0x003e, 0x003f, 0x0700, 0x030c, 0x0703, 0x0020, 0x0207, 0x010a, 0x010b, 0x010c, 0x010d, 0x010e, 0x010f, 0x0110, 0x0111, 0x0112, 0x0113, 0x0213, 0x0203, 0x0307, 0x0308, 0x0309, 0x030b, 0x0304, 0x0305, 0x0306, 0x030a, 0x0301, 0x0302, 0x0303, 0x0300, 0x0310, 0x0206, 0x0200, 0x003e, 0x010a, 0x010b, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x030e, 0x0702, 0x030d, 0x0200, 0x0701, 0x0205, 0x0114, 0x0603, 0x020b, 0x0601, 0x0602, 0x0117, 0x0600, 0x020a, 0x0115, 0x0116, 0x011a, 0x010c, 0x010d, 0x011b, 0x011c, 0x0110, 0x0311, 0x011d, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, }, altgr_map[NR_KEYS] = { 0x0200, 0x0200, 0x0200, 0x0040, 0x0200, 0x0024, 0x0200, 0x0200, 0x007b, 0x005b, 0x005d, 0x007d, 0x005c, 0x0200, 0x0200, 0x0200, 0x0b71, 0x0b77, 0x0918, 0x0b72, 0x0b74, 0x0b79, 0x0b75, 0x0b69, 0x0b6f, 0x0b70, 0x0200, 0x007e, 0x0201, 0x0702, 0x0914, 0x0b73, 0x0917, 0x0919, 0x0b67, 0x0b68, 0x0b6a, 0x0b6b, 0x0b6c, 0x0200, 0x0200, 0x0200, 0x0700, 0x0200, 0x0b7a, 0x0b78, 0x0916, 0x0b76, 0x0915, 0x0b6e, 0x0b6d, 0x0200, 0x0200, 0x0200, 0x0700, 0x030c, 0x0703, 0x0200, 0x0207, 0x050c, 0x050d, 0x050e, 0x050f, 0x0510, 0x0511, 0x0512, 0x0513, 0x0514, 0x0515, 0x0208, 0x0202, 0x0911, 0x0912, 0x0913, 0x030b, 0x090e, 0x090f, 0x0910, 0x030a, 0x090b, 0x090c, 0x090d, 0x090a, 0x0310, 0x0206, 0x0200, 0x007c, 0x0516, 0x0517, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x030e, 0x0702, 0x030d, 0x0200, 0x0701, 0x0205, 0x0114, 0x0603, 0x0118, 0x0601, 0x0602, 0x0117, 0x0600, 0x0119, 0x0115, 0x0116, 0x011a, 0x010c, 0x010d, 0x011b, 0x011c, 0x0110, 0x0311, 0x011d, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, }, ctrl_map[NR_KEYS] = { 0x0200, 0x0200, 0x0200, 0x0000, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f, 0x007f, 0x0200, 0x0200, 0x001f, 0x0200, 0x0008, 0x0200, 0x0011, 0x0017, 0x0005, 0x0012, 0x0014, 0x0019, 0x0015, 0x0009, 0x000f, 0x0010, 0x001b, 0x001d, 0x0201, 0x0702, 0x0001, 0x0013, 0x0004, 0x0006, 0x0007, 0x0008, 0x000a, 0x000b, 0x000c, 0x0200, 0x0007, 0x0000, 0x0700, 0x001c, 0x001a, 0x0018, 0x0003, 0x0016, 0x0002, 0x000e, 0x000d, 0x0200, 0x020e, 0x007f, 0x0700, 0x030c, 0x0703, 0x0000, 0x0207, 0x0100, 0x0101, 0x0102, 0x0103, 0x0104, 0x0105, 0x0106, 0x0107, 0x0108, 0x0109, 0x0208, 0x0204, 0x0307, 0x0308, 0x0309, 0x030b, 0x0304, 0x0305, 0x0306, 0x030a, 0x0301, 0x0302, 0x0303, 0x0300, 0x0310, 0x0206, 0x0200, 0x0200, 0x010a, 0x010b, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x030e, 0x0702, 0x030d, 0x001c, 0x0701, 0x0205, 0x0114, 0x0603, 0x0118, 0x0601, 0x0602, 0x0117, 0x0600, 0x0119, 0x0115, 0x0116, 0x011a, 0x010c, 0x010d, 0x011b, 0x011c, 0x0110, 0x0311, 0x011d, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, 0x0200, }; u_short *linux_keytabs[] = { plain_map, shift_map, altgr_map, altgr_map, ctrl_map }; #endif static struct biosdisk_info * fd2biosinfo(p, fp) struct proc *p; struct file *fp; { struct vnode *vp; const char *blkname; char diskname[16]; int i; struct nativedisk_info *nip; struct disklist *dl = i386_alldisks; if (fp->f_type != DTYPE_VNODE) return NULL; vp = (struct vnode *)fp->f_data; if (vp->v_type != VBLK) return NULL; blkname = findblkname(major(vp->v_rdev)); snprintf(diskname, sizeof diskname, "%s%u", blkname, DISKUNIT(vp->v_rdev)); for (i = 0; i < dl->dl_nnativedisks; i++) { nip = &dl->dl_nativedisks[i]; if (strcmp(diskname, nip->ni_devname)) continue; if (nip->ni_nmatches != 0) return &dl->dl_biosdisks[nip->ni_biosmatches[0]]; } return NULL; } /* * We come here in a last attempt to satisfy a Linux ioctl() call */ int linux_machdepioctl(p, v, retval) struct proc *p; void *v; register_t *retval; { struct linux_sys_ioctl_args /* { syscallarg(int) fd; syscallarg(u_long) com; syscallarg(caddr_t) data; } */ *uap = v; struct sys_ioctl_args bia; u_long com; int error, error1; #if (NWSDISPLAY > 0) struct vt_mode lvt; caddr_t bvtp, sg; struct kbentry kbe; #endif struct linux_hd_geometry hdg; struct linux_hd_big_geometry hdg_big; struct biosdisk_info *bip; struct filedesc *fdp; struct file *fp; int fd; struct disklabel label, *labp; struct partinfo partp; int (*ioctlf) __P((struct file *, u_long, caddr_t, struct proc *)); u_long start, biostotal, realtotal; u_char heads, sectors; u_int cylinders; struct ioctl_pt pt; fd = SCARG(uap, fd); SCARG(&bia, fd) = fd; SCARG(&bia, data) = SCARG(uap, data); com = SCARG(uap, com); fdp = p->p_fd; if ((u_int)fd >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[fd]) == NULL || (fp->f_iflags & FIF_WANTCLOSE) != 0) return (EBADF); switch (com) { #if (NWSDISPLAY > 0) case LINUX_KDGKBMODE: com = KDGKBMODE; break; case LINUX_KDSKBMODE: com = KDSKBMODE; if ((unsigned)SCARG(uap, data) == LINUX_K_MEDIUMRAW) SCARG(&bia, data) = (caddr_t)K_RAW; break; case LINUX_KDMKTONE: com = KDMKTONE; break; case LINUX_KDSETMODE: com = KDSETMODE; break; case LINUX_KDGETMODE: /* KD_* values are equal to the wscons numbers */ com = WSDISPLAYIO_GMODE; break; case LINUX_KDENABIO: com = KDENABIO; break; case LINUX_KDDISABIO: com = KDDISABIO; break; case LINUX_KDGETLED: com = KDGETLED; break; case LINUX_KDSETLED: com = KDSETLED; break; case LINUX_VT_OPENQRY: com = VT_OPENQRY; break; case LINUX_VT_GETMODE: SCARG(&bia, com) = VT_GETMODE; if ((error = sys_ioctl(p, &bia, retval))) return error; if ((error = copyin(SCARG(uap, data), (caddr_t)&lvt, sizeof (struct vt_mode)))) return error; lvt.relsig = native_to_linux_sig[lvt.relsig]; lvt.acqsig = native_to_linux_sig[lvt.acqsig]; lvt.frsig = native_to_linux_sig[lvt.frsig]; return copyout((caddr_t)&lvt, SCARG(uap, data), sizeof (struct vt_mode)); case LINUX_VT_SETMODE: com = VT_SETMODE; if ((error = copyin(SCARG(uap, data), (caddr_t)&lvt, sizeof (struct vt_mode)))) return error; lvt.relsig = linux_to_native_sig[lvt.relsig]; lvt.acqsig = linux_to_native_sig[lvt.acqsig]; lvt.frsig = linux_to_native_sig[lvt.frsig]; sg = stackgap_init(p->p_emul); bvtp = stackgap_alloc(&sg, sizeof (struct vt_mode)); if ((error = copyout(&lvt, bvtp, sizeof (struct vt_mode)))) return error; SCARG(&bia, data) = bvtp; break; case LINUX_VT_DISALLOCATE: /* XXX should use WSDISPLAYIO_DELSCREEN */ return 0; case LINUX_VT_RELDISP: com = VT_RELDISP; break; case LINUX_VT_ACTIVATE: com = VT_ACTIVATE; break; case LINUX_VT_WAITACTIVE: com = VT_WAITACTIVE; break; case LINUX_VT_GETSTATE: com = VT_GETSTATE; break; case LINUX_KDGKBTYPE: /* This is what Linux does. */ return (subyte(SCARG(uap, data), KB_101)); case LINUX_KDGKBENT: /* * The Linux KDGKBENT ioctl is different from the * SYSV original. So we handle it in machdep code. * XXX We should use keyboard mapping information * from wsdisplay, but this would be expensive. */ if ((error = copyin(SCARG(uap, data), &kbe, sizeof(struct kbentry)))) return (error); if (kbe.kb_table >= sizeof(linux_keytabs) / sizeof(u_short *) || kbe.kb_index >= NR_KEYS) return (EINVAL); kbe.kb_value = linux_keytabs[kbe.kb_table][kbe.kb_index]; return (copyout(&kbe, SCARG(uap, data), sizeof(struct kbentry))); #endif case LINUX_HDIO_GETGEO: case LINUX_HDIO_GETGEO_BIG: /* * Try to mimic Linux behaviour: return the BIOS geometry * if possible (extending its # of cylinders if it's beyond * the 1023 limit), fall back to the MI geometry (i.e. * the real geometry) if not found, by returning an * error. See common/linux_hdio.c */ FILE_USE(fp); bip = fd2biosinfo(p, fp); ioctlf = fp->f_ops->fo_ioctl; error = ioctlf(fp, DIOCGDEFLABEL, (caddr_t)&label, p); error1 = ioctlf(fp, DIOCGPART, (caddr_t)&partp, p); FILE_UNUSE(fp, p); if (error != 0 && error1 != 0) return error1; labp = error != 0 ? &label : partp.disklab; start = error1 != 0 ? partp.part->p_offset : 0; if (bip != NULL && bip->bi_head != 0 && bip->bi_sec != 0 && bip->bi_cyl != 0) { heads = bip->bi_head; sectors = bip->bi_sec; cylinders = bip->bi_cyl; biostotal = heads * sectors * cylinders; realtotal = labp->d_ntracks * labp->d_nsectors * labp->d_ncylinders; if (realtotal > biostotal) cylinders = realtotal / (heads * sectors); } else { heads = labp->d_ntracks; cylinders = labp->d_ncylinders; sectors = labp->d_nsectors; } if (com == LINUX_HDIO_GETGEO) { hdg.start = start; hdg.heads = heads; hdg.cylinders = cylinders; hdg.sectors = sectors; return copyout(&hdg, SCARG(uap, data), sizeof hdg); } else { hdg_big.start = start; hdg_big.heads = heads; hdg_big.cylinders = cylinders; hdg_big.sectors = sectors; return copyout(&hdg_big, SCARG(uap, data), sizeof hdg_big); } return 0; default: /* * Unknown to us. If it's on a device, just pass it through * using PTIOCLINUX, the device itself might be able to * make some sense of it. * XXX hack: if the function returns EJUSTRETURN, * it has stuffed a sysctl return value in pt.data. */ FILE_USE(fp); ioctlf = fp->f_ops->fo_ioctl; pt.com = SCARG(uap, com); pt.data = SCARG(uap, data); error = ioctlf(fp, PTIOCLINUX, (caddr_t)&pt, p); FILE_UNUSE(fp, p); if (error == EJUSTRETURN) { retval[0] = (register_t)pt.data; error = 0; } if (error == EINVAL) printf("linux_machdepioctl: invalid ioctl %08lx\n", com); return error; } SCARG(&bia, com) = com; return sys_ioctl(p, &bia, retval); } /* * Set I/O permissions for a process. Just set the maximum level * right away (ignoring the argument), otherwise we would have * to rely on I/O permission maps, which are not implemented. */ int linux_sys_iopl(p, v, retval) struct proc *p; void *v; register_t *retval; { #if 0 struct linux_sys_iopl_args /* { syscallarg(int) level; } */ *uap = v; #endif struct trapframe *fp = p->p_md.md_regs; if (suser(p->p_ucred, &p->p_acflag) != 0) return EPERM; fp->tf_eflags |= PSL_IOPL; *retval = 0; return 0; } /* * See above. If a root process tries to set access to an I/O port, * just let it have the whole range. */ int linux_sys_ioperm(p, v, retval) struct proc *p; void *v; register_t *retval; { struct linux_sys_ioperm_args /* { syscallarg(unsigned int) lo; syscallarg(unsigned int) hi; syscallarg(int) val; } */ *uap = v; struct trapframe *fp = p->p_md.md_regs; if (suser(p->p_ucred, &p->p_acflag) != 0) return EPERM; if (SCARG(uap, val)) fp->tf_eflags |= PSL_IOPL; *retval = 0; return 0; }