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 <linux/unistd.h> /* For syscall numbers. */
24 #ifdef AFS_AMD64_LINUX20_ENV
25 #include <asm/ia32_unistd.h>
28 #if defined(AFS_SPARC64_LINUX26_ENV) && defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
29 #include <linux/ioctl32.h>
32 #include <linux/slab.h>
33 #include <linux/init.h>
34 #include <linux/sched.h>
35 #include <linux/kernel.h>
37 #include "osi_compat.h"
39 extern struct proc_dir_entry *openafs_procfs;
40 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
41 static int ioctl32_done;
44 extern asmlinkage long
45 afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4);
48 afs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
52 struct afsprocdata sysargs;
54 struct afsprocdata32 sysargs32;
57 if (cmd != VIOC_SYSCALL && cmd != VIOC_SYSCALL32) return -EINVAL;
60 # if defined(AFS_S390X_LINUX26_ENV)
61 if (test_thread_flag(TIF_31BIT))
62 # elif defined(AFS_AMD64_LINUX20_ENV)
63 if (test_thread_flag(TIF_IA32))
65 if (test_thread_flag(TIF_32BIT))
66 # endif /* AFS_S390X_LINUX26_ENV */
68 if (copy_from_user(&sysargs32, (void *)arg,
69 sizeof(struct afsprocdata32)))
72 return afs_syscall((unsigned long)sysargs32.syscall,
73 (unsigned long)sysargs32.param1,
74 (unsigned long)sysargs32.param2,
75 (unsigned long)sysargs32.param3,
76 (unsigned long)sysargs32.param4);
78 #endif /* NEED_IOCTL32 */
80 if (copy_from_user(&sysargs, (void *)arg, sizeof(struct afsprocdata)))
83 return afs_syscall(sysargs.syscall, sysargs.param1,
84 sysargs.param2, sysargs.param3, sysargs.param4);
88 #if defined(HAVE_UNLOCKED_IOCTL) || defined(HAVE_COMPAT_IOCTL)
89 static long afs_unlocked_ioctl(struct file *file, unsigned int cmd,
91 return afs_ioctl(FILE_INODE(file), file, cmd, arg);
94 #if defined(HAVE_LINUX_STRUCT_PROC_OPS)
95 static struct proc_ops afs_syscall_ops = {
96 .proc_ioctl = afs_unlocked_ioctl,
97 # ifdef STRUCT_PROC_OPS_HAS_PROC_COMPAT_IOCTL
98 .proc_compat_ioctl = afs_unlocked_ioctl,
102 static struct file_operations afs_syscall_ops = {
103 # ifdef HAVE_UNLOCKED_IOCTL
104 .unlocked_ioctl = afs_unlocked_ioctl,
108 # ifdef HAVE_COMPAT_IOCTL
109 .compat_ioctl = afs_unlocked_ioctl,
112 #endif /* HAVE_LINUX_STRUCT_PROC_OPS */
116 struct proc_dir_entry *entry;
118 entry = afs_proc_create(PROC_SYSCALL_NAME, 0666, openafs_procfs, &afs_syscall_ops);
119 #if defined(STRUCT_PROC_DIR_ENTRY_HAS_OWNER)
121 entry->owner = THIS_MODULE;
124 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
125 if (register_ioctl32_conversion(VIOC_SYSCALL32, NULL) == 0)
131 osi_ioctl_clean(void)
133 remove_proc_entry(PROC_SYSCALL_NAME, openafs_procfs);
134 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
136 unregister_ioctl32_conversion(VIOC_SYSCALL32);