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>
28 #include <linux/proc_fs.h>
29 #include <linux/slab.h>
30 #include <linux/init.h>
31 #include <linux/sched.h>
32 #include <linux/kernel.h>
34 extern struct proc_dir_entry *openafs_procfs;
35 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
36 static int ioctl32_done;
39 extern asmlinkage long
40 afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4);
43 afs_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
47 struct afsprocdata sysargs;
49 struct afsprocdata32 sysargs32;
52 if (cmd != VIOC_SYSCALL && cmd != VIOC_SYSCALL32) return -EINVAL;
55 #ifdef AFS_SPARC64_LINUX24_ENV
56 if (current->thread.flags & SPARC_FLAG_32BIT)
57 #elif defined(AFS_SPARC64_LINUX20_ENV)
58 if (current->tss.flags & SPARC_FLAG_32BIT)
59 #elif defined(AFS_AMD64_LINUX20_ENV)
60 if (current->thread.flags & THREAD_IA32)
61 #elif defined(AFS_PPC64_LINUX20_ENV)
62 if (current->thread.flags & PPC_FLAG_32BIT)
63 #elif defined(AFS_S390X_LINUX20_ENV)
64 if (current->thread.flags & S390_FLAG_31BIT)
66 #error Not done for this linux type
68 #endif /* NEED_IOCTL32 */
70 if (copy_from_user(&sysargs32, (void *)arg,
71 sizeof(struct afsprocdata32)))
74 return afs_syscall((unsigned long)sysargs32.syscall,
75 (unsigned long)sysargs32.param1,
76 (unsigned long)sysargs32.param2,
77 (unsigned long)sysargs32.param3,
78 (unsigned long)sysargs32.param4);
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);
95 static struct file_operations afs_syscall_fops = {
96 #ifdef HAVE_UNLOCKED_IOCTL
97 .unlocked_ioctl = afs_unlocked_ioctl,
101 #ifdef HAVE_COMPAT_IOCTL
102 .compat_ioctl = afs_unlocked_ioctl,
109 struct proc_dir_entry *entry;
111 entry = create_proc_entry(PROC_SYSCALL_NAME, 0666, openafs_procfs);
112 entry->proc_fops = &afs_syscall_fops;
113 #if defined(STRUCT_PROC_DIR_ENTRY_HAS_OWNER)
114 entry->owner = THIS_MODULE;
117 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
118 if (register_ioctl32_conversion(VIOC_SYSCALL32, NULL) == 0)
124 osi_ioctl_clean(void)
126 remove_proc_entry(PROC_SYSCALL_NAME, openafs_procfs);
127 #if defined(NEED_IOCTL32) && !defined(HAVE_COMPAT_IOCTL)
129 unregister_ioctl32_conversion(VIOC_SYSCALL32);