2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
11 * Linux module support routines.
14 #include <afsconfig.h>
15 #include "afs/param.h"
18 #include <linux/module.h> /* early to avoid printf->printk mapping */
19 #include "afs/sysincludes.h"
20 #include "afsincludes.h"
21 #include "h/unistd.h" /* For syscall numbers. */
24 #ifdef AFS_AMD64_LINUX20_ENV
25 #include <asm/ia32_unistd.h>
27 #ifdef AFS_SPARC64_LINUX20_ENV
28 #include <linux/ioctl32.h>
31 #include <linux/proc_fs.h>
32 #include <linux/slab.h>
33 #include <linux/init.h>
34 #include <linux/sched.h>
35 #include <linux/kernel.h>
37 extern struct proc_dir_entry *openafs_procfs;
38 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
39 static int ioctl32_done;
42 extern asmlinkage long
43 afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4);
46 afs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
50 struct afsprocdata sysargs;
52 struct afsprocdata32 sysargs32;
55 if (cmd != VIOC_SYSCALL && cmd != VIOC_SYSCALL32) return -EINVAL;
58 # ifdef AFS_S390X_LINUX26_ENV
59 if (test_thread_flag(TIF_31BIT))
60 # elif AFS_AMD64_LINUX20_ENV
61 if (test_thread_flag(TIF_IA32))
63 if (test_thread_flag(TIF_32BIT))
64 # endif /* AFS_S390X_LINUX26_ENV */
66 if (copy_from_user(&sysargs32, (void *)arg,
67 sizeof(struct afsprocdata32)))
70 return afs_syscall((unsigned long)sysargs32.syscall,
71 (unsigned long)sysargs32.param1,
72 (unsigned long)sysargs32.param2,
73 (unsigned long)sysargs32.param3,
74 (unsigned long)sysargs32.param4);
76 #endif /* NEED_IOCTL32 */
78 if (copy_from_user(&sysargs, (void *)arg, sizeof(struct afsprocdata)))
81 return afs_syscall(sysargs.syscall, sysargs.param1,
82 sysargs.param2, sysargs.param3, sysargs.param4);
86 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
87 static long afs_unlocked_ioctl(struct file *file, unsigned int cmd,
89 return afs_ioctl(FILE_INODE(file), file, cmd, arg);
93 static struct file_operations afs_syscall_fops = {
94 #ifdef HAVE_UNLOCKED_IOCTL
95 .unlocked_ioctl = afs_unlocked_ioctl,
99 #ifdef HAVE_COMPAT_IOCTL
100 .compat_ioctl = afs_unlocked_ioctl,
107 struct proc_dir_entry *entry;
109 entry = create_proc_entry(PROC_SYSCALL_NAME, 0666, openafs_procfs);
110 entry->proc_fops = &afs_syscall_fops;
111 #if defined(STRUCT_PROC_DIR_ENTRY_HAS_OWNER)
112 entry->owner = THIS_MODULE;
115 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
116 if (register_ioctl32_conversion(VIOC_SYSCALL32, NULL) == 0)
122 osi_ioctl_clean(void)
124 remove_proc_entry(PROC_SYSCALL_NAME, openafs_procfs);
125 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
127 unregister_ioctl32_conversion(VIOC_SYSCALL32);