Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * irixioctl.c: A fucking mess... |
| 3 | * |
| 4 | * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) |
| 5 | */ |
| 6 | |
| 7 | #include <linux/kernel.h> |
| 8 | #include <linux/sched.h> |
| 9 | #include <linux/fs.h> |
| 10 | #include <linux/mm.h> |
| 11 | #include <linux/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/sockios.h> |
| 13 | #include <linux/syscalls.h> |
| 14 | #include <linux/tty.h> |
| 15 | #include <linux/file.h> |
Dipankar Sarma | b835996 | 2005-09-09 13:04:14 -0700 | [diff] [blame] | 16 | #include <linux/rcupdate.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
| 18 | #include <asm/uaccess.h> |
| 19 | #include <asm/ioctl.h> |
| 20 | #include <asm/ioctls.h> |
| 21 | |
| 22 | #undef DEBUG_IOCTLS |
| 23 | #undef DEBUG_MISSING_IOCTL |
| 24 | |
| 25 | struct irix_termios { |
| 26 | tcflag_t c_iflag, c_oflag, c_cflag, c_lflag; |
| 27 | cc_t c_cc[NCCS]; |
| 28 | }; |
| 29 | |
| 30 | extern void start_tty(struct tty_struct *tty); |
| 31 | static struct tty_struct *get_tty(int fd) |
| 32 | { |
| 33 | struct file *filp; |
| 34 | struct tty_struct *ttyp = NULL; |
| 35 | |
Dipankar Sarma | b835996 | 2005-09-09 13:04:14 -0700 | [diff] [blame] | 36 | rcu_read_lock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | filp = fcheck(fd); |
| 38 | if(filp && filp->private_data) { |
| 39 | ttyp = (struct tty_struct *) filp->private_data; |
| 40 | |
| 41 | if(ttyp->magic != TTY_MAGIC) |
| 42 | ttyp =NULL; |
| 43 | } |
Dipankar Sarma | b835996 | 2005-09-09 13:04:14 -0700 | [diff] [blame] | 44 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | return ttyp; |
| 46 | } |
| 47 | |
| 48 | static struct tty_struct *get_real_tty(struct tty_struct *tp) |
| 49 | { |
| 50 | if (tp->driver->type == TTY_DRIVER_TYPE_PTY && |
| 51 | tp->driver->subtype == PTY_TYPE_MASTER) |
| 52 | return tp->link; |
| 53 | else |
| 54 | return tp; |
| 55 | } |
| 56 | |
| 57 | asmlinkage int irix_ioctl(int fd, unsigned long cmd, unsigned long arg) |
| 58 | { |
| 59 | struct tty_struct *tp, *rtp; |
| 60 | mm_segment_t old_fs; |
Ralf Baechle | 1592dac | 2005-03-17 21:50:49 +0000 | [diff] [blame] | 61 | int i, error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | #ifdef DEBUG_IOCTLS |
| 64 | printk("[%s:%d] irix_ioctl(%d, ", current->comm, current->pid, fd); |
| 65 | #endif |
| 66 | switch(cmd) { |
| 67 | case 0x00005401: |
| 68 | #ifdef DEBUG_IOCTLS |
| 69 | printk("TCGETA, %08lx) ", arg); |
| 70 | #endif |
| 71 | error = sys_ioctl(fd, TCGETA, arg); |
| 72 | break; |
| 73 | |
| 74 | case 0x0000540d: { |
| 75 | struct termios kt; |
Ralf Baechle | 1592dac | 2005-03-17 21:50:49 +0000 | [diff] [blame] | 76 | struct irix_termios __user *it = |
| 77 | (struct irix_termios __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | #ifdef DEBUG_IOCTLS |
| 80 | printk("TCGETS, %08lx) ", arg); |
| 81 | #endif |
Ralf Baechle | 1592dac | 2005-03-17 21:50:49 +0000 | [diff] [blame] | 82 | if (!access_ok(VERIFY_WRITE, it, sizeof(*it))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | error = -EFAULT; |
| 84 | break; |
| 85 | } |
| 86 | old_fs = get_fs(); set_fs(get_ds()); |
| 87 | error = sys_ioctl(fd, TCGETS, (unsigned long) &kt); |
| 88 | set_fs(old_fs); |
| 89 | if (error) |
| 90 | break; |
Ralf Baechle | 1592dac | 2005-03-17 21:50:49 +0000 | [diff] [blame] | 91 | |
| 92 | error = __put_user(kt.c_iflag, &it->c_iflag); |
| 93 | error |= __put_user(kt.c_oflag, &it->c_oflag); |
| 94 | error |= __put_user(kt.c_cflag, &it->c_cflag); |
| 95 | error |= __put_user(kt.c_lflag, &it->c_lflag); |
| 96 | |
| 97 | for (i = 0; i < NCCS; i++) |
| 98 | error |= __put_user(kt.c_cc[i], &it->c_cc[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | break; |
| 100 | } |
| 101 | |
| 102 | case 0x0000540e: { |
| 103 | struct termios kt; |
| 104 | struct irix_termios *it = (struct irix_termios *) arg; |
| 105 | |
| 106 | #ifdef DEBUG_IOCTLS |
| 107 | printk("TCSETS, %08lx) ", arg); |
| 108 | #endif |
| 109 | if (!access_ok(VERIFY_READ, it, sizeof(*it))) { |
| 110 | error = -EFAULT; |
| 111 | break; |
| 112 | } |
| 113 | old_fs = get_fs(); set_fs(get_ds()); |
| 114 | error = sys_ioctl(fd, TCGETS, (unsigned long) &kt); |
| 115 | set_fs(old_fs); |
Ralf Baechle | 1592dac | 2005-03-17 21:50:49 +0000 | [diff] [blame] | 116 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | break; |
Ralf Baechle | 1592dac | 2005-03-17 21:50:49 +0000 | [diff] [blame] | 118 | |
| 119 | error = __get_user(kt.c_iflag, &it->c_iflag); |
| 120 | error |= __get_user(kt.c_oflag, &it->c_oflag); |
| 121 | error |= __get_user(kt.c_cflag, &it->c_cflag); |
| 122 | error |= __get_user(kt.c_lflag, &it->c_lflag); |
| 123 | |
| 124 | for (i = 0; i < NCCS; i++) |
| 125 | error |= __get_user(kt.c_cc[i], &it->c_cc[i]); |
| 126 | |
| 127 | if (error) |
| 128 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | old_fs = get_fs(); set_fs(get_ds()); |
| 130 | error = sys_ioctl(fd, TCSETS, (unsigned long) &kt); |
| 131 | set_fs(old_fs); |
| 132 | break; |
| 133 | } |
| 134 | |
| 135 | case 0x0000540f: |
| 136 | #ifdef DEBUG_IOCTLS |
| 137 | printk("TCSETSW, %08lx) ", arg); |
| 138 | #endif |
| 139 | error = sys_ioctl(fd, TCSETSW, arg); |
| 140 | break; |
| 141 | |
| 142 | case 0x00005471: |
| 143 | #ifdef DEBUG_IOCTLS |
| 144 | printk("TIOCNOTTY, %08lx) ", arg); |
| 145 | #endif |
| 146 | error = sys_ioctl(fd, TIOCNOTTY, arg); |
| 147 | break; |
| 148 | |
| 149 | case 0x00007416: |
| 150 | #ifdef DEBUG_IOCTLS |
| 151 | printk("TIOCGSID, %08lx) ", arg); |
| 152 | #endif |
| 153 | tp = get_tty(fd); |
| 154 | if(!tp) { |
| 155 | error = -EINVAL; |
| 156 | break; |
| 157 | } |
| 158 | rtp = get_real_tty(tp); |
| 159 | #ifdef DEBUG_IOCTLS |
| 160 | printk("rtp->session=%d ", rtp->session); |
| 161 | #endif |
Ralf Baechle | 1592dac | 2005-03-17 21:50:49 +0000 | [diff] [blame] | 162 | error = put_user(rtp->session, (unsigned long __user *) arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | break; |
| 164 | |
| 165 | case 0x746e: |
| 166 | /* TIOCSTART, same effect as hitting ^Q */ |
| 167 | #ifdef DEBUG_IOCTLS |
| 168 | printk("TIOCSTART, %08lx) ", arg); |
| 169 | #endif |
| 170 | tp = get_tty(fd); |
| 171 | if(!tp) { |
| 172 | error = -EINVAL; |
| 173 | break; |
| 174 | } |
| 175 | rtp = get_real_tty(tp); |
| 176 | start_tty(rtp); |
| 177 | break; |
| 178 | |
| 179 | case 0x20006968: |
| 180 | #ifdef DEBUG_IOCTLS |
| 181 | printk("SIOCGETLABEL, %08lx) ", arg); |
| 182 | #endif |
| 183 | error = -ENOPKG; |
| 184 | break; |
| 185 | |
| 186 | case 0x40047477: |
| 187 | #ifdef DEBUG_IOCTLS |
| 188 | printk("TIOCGPGRP, %08lx) ", arg); |
| 189 | #endif |
| 190 | error = sys_ioctl(fd, TIOCGPGRP, arg); |
| 191 | #ifdef DEBUG_IOCTLS |
| 192 | printk("arg=%d ", *(int *)arg); |
| 193 | #endif |
| 194 | break; |
| 195 | |
| 196 | case 0x40087468: |
| 197 | #ifdef DEBUG_IOCTLS |
| 198 | printk("TIOCGWINSZ, %08lx) ", arg); |
| 199 | #endif |
| 200 | error = sys_ioctl(fd, TIOCGWINSZ, arg); |
| 201 | break; |
| 202 | |
| 203 | case 0x8004667e: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | error = sys_ioctl(fd, FIONBIO, arg); |
| 205 | break; |
| 206 | |
| 207 | case 0x80047476: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | error = sys_ioctl(fd, TIOCSPGRP, arg); |
| 209 | break; |
| 210 | |
| 211 | case 0x8020690c: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | error = sys_ioctl(fd, SIOCSIFADDR, arg); |
| 213 | break; |
| 214 | |
| 215 | case 0x80206910: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | error = sys_ioctl(fd, SIOCSIFFLAGS, arg); |
| 217 | break; |
| 218 | |
| 219 | case 0xc0206911: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | error = sys_ioctl(fd, SIOCGIFFLAGS, arg); |
| 221 | break; |
| 222 | |
| 223 | case 0xc020691b: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | error = sys_ioctl(fd, SIOCGIFMETRIC, arg); |
| 225 | break; |
| 226 | |
| 227 | default: { |
| 228 | #ifdef DEBUG_MISSING_IOCTL |
Ralf Baechle | 1592dac | 2005-03-17 21:50:49 +0000 | [diff] [blame] | 229 | char *msg = "Unimplemented IOCTL cmd tell linux-mips@linux-mips.org\n"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
| 231 | #ifdef DEBUG_IOCTLS |
| 232 | printk("UNIMP_IOCTL, %08lx)\n", arg); |
| 233 | #endif |
| 234 | old_fs = get_fs(); set_fs(get_ds()); |
| 235 | sys_write(2, msg, strlen(msg)); |
| 236 | set_fs(old_fs); |
| 237 | printk("[%s:%d] Does unimplemented IRIX ioctl cmd %08lx\n", |
| 238 | current->comm, current->pid, cmd); |
| 239 | do_exit(255); |
| 240 | #else |
| 241 | error = sys_ioctl (fd, cmd, arg); |
| 242 | #endif |
| 243 | } |
| 244 | |
| 245 | }; |
| 246 | #ifdef DEBUG_IOCTLS |
| 247 | printk("error=%d\n", error); |
| 248 | #endif |
| 249 | return error; |
| 250 | } |