-/* Copyright 1998 Transarc Corporation - All Rights Reserved.
- *
- * osi_module.c
- *
+/*
+ * Copyright 2000, International Business Machines Corporation and others.
+ * All Rights Reserved.
+ *
+ * This software has been released under the terms of the IBM Public
+ * License. For details, see the LICENSE file in the top-level source
+ * directory or online at http://www.openafs.org/dl/license10.html
+ */
+
+/*
* Linux module support routines.
*
*/
asmlinkage int (*sys_settimeofdayp)(struct timeval *tv, struct timezone *tz);
+#if !defined(AFS_ALPHA_LINUX20_ENV)
asmlinkage int (*sys_socketcallp)(int call, long *args);
+#endif /* no socketcall on alpha */
asmlinkage int (*sys_killp)(int pid, int signal);
asmlinkage int (*sys_setgroupsp)(int gidsetsize, gid_t *grouplist);
-extern void *sys_call_table[];
+#ifdef AFS_SPARC64_LINUX20_ENV
+extern unsigned int sys_call_table[]; /* changed to uint because SPARC64 has syscaltable of 32bit items */
+#else
+extern void * sys_call_table[]; /* safer for other linuces */
+#endif
extern struct file_system_type afs_file_system;
static long get_page_offset(void);
+#if defined(AFS_LINUX24_ENV)
+DECLARE_MUTEX(afs_global_lock);
+#else
struct semaphore afs_global_lock = MUTEX;
+#endif
int afs_global_owner = 0;
unsigned long afs_linux_page_offset = 0; /* contains the PAGE_OFFSET value */
/* Since sys_ni_syscall is not exported, I need to cache it in order to restore
* it.
*/
-static void *afs_ni_syscall = NULL;
+#ifdef AFS_SPARC64_LINUX20_ENV
+static unsigned int afs_ni_syscall = 0;
+#else
+static void* afs_ni_syscall = 0;
+#endif
+
+#ifdef AFS_SPARC64_LINUX20_ENV
+static unsigned int afs_ni_syscall32 = 0;
+asmlinkage int (*sys_setgroupsp32)(int gidsetsize, __kernel_gid_t32 *grouplist);
+extern unsigned int sys_call_table32[];
+
+asmlinkage int afs_syscall32(long syscall, long parm1, long parm2, long parm3,
+ long parm4, long parm5)
+{
+__asm__ __volatile__ ("
+ srl %o4, 0, %o4
+ mov %o7, %i7
+ call afs_syscall
+ srl %o5, 0, %o5
+ ret
+ nop
+");
+}
+#endif
+
+#if defined(AFS_LINUX24_ENV)
+asmlinkage int (*sys_setgroups32p)(int gidsetsize, __kernel_gid32_t *grouplist);
+#endif
+
+#ifdef AFS_SPARC64_LINUX20_ENV
+#define POINTER2SYSCALL (unsigned int)(unsigned long)
+#define SYSCALL2POINTER (void *)(long)
+#else
+#define POINTER2SYSCALL (void *)
+#define SYSCALL2POINTER (void *)
+#endif
int init_module(void)
{
extern int afs_syscall();
extern int afs_xsetgroups();
+#if defined(AFS_SPARC64_LINUX20_ENV) || defined(AFS_LINUX24_ENV)
+ extern int afs_xsetgroups32();
+#endif
/* obtain PAGE_OFFSET value */
afs_linux_page_offset = get_page_offset();
+#ifndef AFS_S390_LINUX22_ENV
if (afs_linux_page_offset == 0) {
/* couldn't obtain page offset so can't continue */
printf("afs: Unable to obtain PAGE_OFFSET. Exiting..");
return -EIO;
}
+#endif
/* Initialize pointers to kernel syscalls. */
- sys_settimeofdayp = sys_call_table[__NR_settimeofday];
- sys_socketcallp = sys_call_table[__NR_socketcall];
- sys_killp = sys_call_table[__NR_kill];
+ sys_settimeofdayp = SYSCALL2POINTER sys_call_table[__NR_settimeofday];
+#if !defined(AFS_ALPHA_LINUX20_ENV)
+ sys_socketcallp = SYSCALL2POINTER sys_call_table[__NR_socketcall];
+#endif /* no socketcall on alpha */
+ sys_killp = SYSCALL2POINTER sys_call_table[__NR_kill];
/* setup AFS entry point. */
- if (sys_call_table[__NR_afs_syscall] == afs_syscall) {
+ if (SYSCALL2POINTER sys_call_table[__NR_afs_syscall] == afs_syscall) {
printf("AFS syscall entry point already in use!\n");
return -EBUSY;
}
afs_ni_syscall = sys_call_table[__NR_afs_syscall];
- sys_call_table[__NR_afs_syscall] = afs_syscall;
+ sys_call_table[__NR_afs_syscall] = POINTER2SYSCALL afs_syscall;
+#ifdef AFS_SPARC64_LINUX20_ENV
+ afs_ni_syscall32 = sys_call_table32[__NR_afs_syscall];
+ sys_call_table32[__NR_afs_syscall] = POINTER2SYSCALL afs_syscall32;
+#endif
osi_Init();
register_filesystem(&afs_file_system);
/* Intercept setgroups calls */
- sys_setgroupsp = sys_call_table[__NR_setgroups];
- sys_call_table[__NR_setgroups] = afs_xsetgroups;
+ sys_setgroupsp = SYSCALL2POINTER sys_call_table[__NR_setgroups];
+ sys_call_table[__NR_setgroups] = POINTER2SYSCALL afs_xsetgroups;
+#ifdef AFS_SPARC64_LINUX20_ENV
+ sys_setgroupsp32 = SYSCALL2POINTER sys_call_table32[__NR_setgroups];
+ sys_call_table32[__NR_setgroups] = POINTER2SYSCALL afs_xsetgroups32;
+#endif
+#if defined(__NR_setgroups32)
+ sys_setgroups32p = SYSCALL2POINTER sys_call_table[__NR_setgroups32];
+ sys_call_table[__NR_setgroups32] = POINTER2SYSCALL afs_xsetgroups32;
+#endif
return 0;
}
{
struct task_struct *t;
- sys_call_table[__NR_setgroups] = sys_setgroupsp;
+ sys_call_table[__NR_setgroups] = POINTER2SYSCALL sys_setgroupsp;
sys_call_table[__NR_afs_syscall] = afs_ni_syscall;
-
+#ifdef AFS_SPARC64_LINUX20_ENV
+ sys_call_table32[__NR_setgroups] = POINTER2SYSCALL sys_setgroupsp32;
+ sys_call_table32[__NR_afs_syscall] = afs_ni_syscall32;
+#endif
+#if defined(__NR_setgroups32)
+ sys_call_table[__NR_setgroups32] = POINTER2SYSCALL sys_setgroups32p;
+#endif
unregister_filesystem(&afs_file_system);
osi_linux_free_inode_pages(); /* Invalidate all pages using AFS inodes. */
static long get_page_offset(void)
{
+#if defined(AFS_PPC_LINUX22_ENV) || defined(AFS_SPARC64_LINUX20_ENV) || defined(AFS_SPARC_LINUX20_ENV) || defined(AFS_ALPHA_LINUX20_ENV) || defined(AFS_S390_LINUX22_ENV)
+ return PAGE_OFFSET;
+#else
struct task_struct *p;
/* search backward thru the circular list */
return p->addr_limit.seg;
return 0;
+#endif
}
git://git.openafs.org / openafs.git / blobdiff