diff options
Diffstat (limited to 'arch/mips/kernel/irixioctl.c')
| -rw-r--r-- | arch/mips/kernel/irixioctl.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/arch/mips/kernel/irixioctl.c b/arch/mips/kernel/irixioctl.c new file mode 100644 index 00000000000..4cd3d38a22c --- /dev/null +++ b/arch/mips/kernel/irixioctl.c @@ -0,0 +1,261 @@ +/* + * irixioctl.c: A fucking mess... + * + * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/smp_lock.h> +#include <linux/sockios.h> +#include <linux/syscalls.h> +#include <linux/tty.h> +#include <linux/file.h> + +#include <asm/uaccess.h> +#include <asm/ioctl.h> +#include <asm/ioctls.h> + +#undef DEBUG_IOCTLS +#undef DEBUG_MISSING_IOCTL + +struct irix_termios { + tcflag_t c_iflag, c_oflag, c_cflag, c_lflag; + cc_t c_cc[NCCS]; +}; + +extern void start_tty(struct tty_struct *tty); +static struct tty_struct *get_tty(int fd) +{ + struct file *filp; + struct tty_struct *ttyp = NULL; + + spin_lock(¤t->files->file_lock); + filp = fcheck(fd); + if(filp && filp->private_data) { + ttyp = (struct tty_struct *) filp->private_data; + + if(ttyp->magic != TTY_MAGIC) + ttyp =NULL; + } + spin_unlock(¤t->files->file_lock); + return ttyp; +} + +static struct tty_struct *get_real_tty(struct tty_struct *tp) +{ + if (tp->driver->type == TTY_DRIVER_TYPE_PTY && + tp->driver->subtype == PTY_TYPE_MASTER) + return tp->link; + else + return tp; +} + +asmlinkage int irix_ioctl(int fd, unsigned long cmd, unsigned long arg) +{ + struct tty_struct *tp, *rtp; + mm_segment_t old_fs; + int error = 0; + +#ifdef DEBUG_IOCTLS + printk("[%s:%d] irix_ioctl(%d, ", current->comm, current->pid, fd); +#endif + switch(cmd) { + case 0x00005401: +#ifdef DEBUG_IOCTLS + printk("TCGETA, %08lx) ", arg); +#endif + error = sys_ioctl(fd, TCGETA, arg); + break; + + case 0x0000540d: { + struct termios kt; + struct irix_termios *it = (struct irix_termios *) arg; + +#ifdef DEBUG_IOCTLS + printk("TCGETS, %08lx) ", arg); +#endif + if(!access_ok(VERIFY_WRITE, it, sizeof(*it))) { + error = -EFAULT; + break; + } + old_fs = get_fs(); set_fs(get_ds()); + error = sys_ioctl(fd, TCGETS, (unsigned long) &kt); + set_fs(old_fs); + if (error) + break; + __put_user(kt.c_iflag, &it->c_iflag); + __put_user(kt.c_oflag, &it->c_oflag); + __put_user(kt.c_cflag, &it->c_cflag); + __put_user(kt.c_lflag, &it->c_lflag); + for(error = 0; error < NCCS; error++) + __put_user(kt.c_cc[error], &it->c_cc[error]); + error = 0; + break; + } + + case 0x0000540e: { + struct termios kt; + struct irix_termios *it = (struct irix_termios *) arg; + +#ifdef DEBUG_IOCTLS + printk("TCSETS, %08lx) ", arg); +#endif + if (!access_ok(VERIFY_READ, it, sizeof(*it))) { + error = -EFAULT; + break; + } + old_fs = get_fs(); set_fs(get_ds()); + error = sys_ioctl(fd, TCGETS, (unsigned long) &kt); + set_fs(old_fs); + if(error) + break; + __get_user(kt.c_iflag, &it->c_iflag); + __get_user(kt.c_oflag, &it->c_oflag); + __get_user(kt.c_cflag, &it->c_cflag); + __get_user(kt.c_lflag, &it->c_lflag); + for(error = 0; error < NCCS; error++) + __get_user(kt.c_cc[error], &it->c_cc[error]); + old_fs = get_fs(); set_fs(get_ds()); + error = sys_ioctl(fd, TCSETS, (unsigned long) &kt); + set_fs(old_fs); + break; + } + + case 0x0000540f: +#ifdef DEBUG_IOCTLS + printk("TCSETSW, %08lx) ", arg); +#endif + error = sys_ioctl(fd, TCSETSW, arg); + break; + + case 0x00005471: +#ifdef DEBUG_IOCTLS + printk("TIOCNOTTY, %08lx) ", arg); +#endif + error = sys_ioctl(fd, TIOCNOTTY, arg); + break; + + case 0x00007416: +#ifdef DEBUG_IOCTLS + printk("TIOCGSID, %08lx) ", arg); +#endif + tp = get_tty(fd); + if(!tp) { + error = -EINVAL; + break; + } + rtp = get_real_tty(tp); +#ifdef DEBUG_IOCTLS + printk("rtp->session=%d ", rtp->session); +#endif + error = put_user(rtp->session, (unsigned long *) arg); + break; + + case 0x746e: + /* TIOCSTART, same effect as hitting ^Q */ +#ifdef DEBUG_IOCTLS + printk("TIOCSTART, %08lx) ", arg); +#endif + tp = get_tty(fd); + if(!tp) { + error = -EINVAL; + break; + } + rtp = get_real_tty(tp); + start_tty(rtp); + break; + + case 0x20006968: +#ifdef DEBUG_IOCTLS + printk("SIOCGETLABEL, %08lx) ", arg); +#endif + error = -ENOPKG; + break; + + case 0x40047477: +#ifdef DEBUG_IOCTLS + printk("TIOCGPGRP, %08lx) ", arg); +#endif + error = sys_ioctl(fd, TIOCGPGRP, arg); +#ifdef DEBUG_IOCTLS + printk("arg=%d ", *(int *)arg); +#endif + break; + + case 0x40087468: +#ifdef DEBUG_IOCTLS + printk("TIOCGWINSZ, %08lx) ", arg); +#endif + error = sys_ioctl(fd, TIOCGWINSZ, arg); + break; + + case 0x8004667e: +#ifdef DEBUG_IOCTLS + printk("FIONBIO, %08lx) arg=%d ", arg, *(int *)arg); +#endif + error = sys_ioctl(fd, FIONBIO, arg); + break; + + case 0x80047476: +#ifdef DEBUG_IOCTLS + printk("TIOCSPGRP, %08lx) arg=%d ", arg, *(int *)arg); +#endif + error = sys_ioctl(fd, TIOCSPGRP, arg); + break; + + case 0x8020690c: +#ifdef DEBUG_IOCTLS + printk("SIOCSIFADDR, %08lx) arg=%d ", arg, *(int *)arg); +#endif + error = sys_ioctl(fd, SIOCSIFADDR, arg); + break; + + case 0x80206910: +#ifdef DEBUG_IOCTLS + printk("SIOCSIFFLAGS, %08lx) arg=%d ", arg, *(int *)arg); +#endif + error = sys_ioctl(fd, SIOCSIFFLAGS, arg); + break; + + case 0xc0206911: +#ifdef DEBUG_IOCTLS + printk("SIOCGIFFLAGS, %08lx) arg=%d ", arg, *(int *)arg); +#endif + error = sys_ioctl(fd, SIOCGIFFLAGS, arg); + break; + + case 0xc020691b: +#ifdef DEBUG_IOCTLS + printk("SIOCGIFMETRIC, %08lx) arg=%d ", arg, *(int *)arg); +#endif + error = sys_ioctl(fd, SIOCGIFMETRIC, arg); + break; + + default: { +#ifdef DEBUG_MISSING_IOCTL + char *msg = "Unimplemented IOCTL cmd tell linux@engr.sgi.com\n"; + +#ifdef DEBUG_IOCTLS + printk("UNIMP_IOCTL, %08lx)\n", arg); +#endif + old_fs = get_fs(); set_fs(get_ds()); + sys_write(2, msg, strlen(msg)); + set_fs(old_fs); + printk("[%s:%d] Does unimplemented IRIX ioctl cmd %08lx\n", + current->comm, current->pid, cmd); + do_exit(255); +#else + error = sys_ioctl (fd, cmd, arg); +#endif + } + + }; +#ifdef DEBUG_IOCTLS + printk("error=%d\n", error); +#endif + return error; +} |