#include <afsconfig.h>
#include "afs/param.h"
-RCSID("$Header$");
+#include <linux/module.h> /* early to avoid printf->printk mapping */
#include "afs/sysincludes.h"
#include "afsincludes.h"
-#include "h/unistd.h" /* For syscall numbers. */
-#include "h/mm.h"
+#include <linux/unistd.h> /* For syscall numbers. */
+#include <linux/mm.h>
-#include <linux/module.h>
+#ifdef AFS_AMD64_LINUX20_ENV
+#include <asm/ia32_unistd.h>
+#endif
+
+#include <linux/proc_fs.h>
#include <linux/slab.h>
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
#include <linux/init.h>
-#endif
-#ifndef EXPORTED_SYS_CALL_TABLE
#include <linux/sched.h>
-#include <linux/syscall.h>
-#endif
-
-
+#include <linux/kernel.h>
-#ifdef AFS_SPARC64_LINUX24_ENV
-#define __NR_setgroups32 82 /* This number is not exported for some bizarre reason. */
-#endif
+#include "osi_pagecopy.h"
-asmlinkage int (*sys_settimeofdayp)(struct timeval *tv, struct timezone *tz);
-asmlinkage int (*sys_killp)(int pid, int signal);
-asmlinkage long (*sys_setgroupsp)(int gidsetsize, gid_t *grouplist);
+extern struct file_system_type afs_fs_type;
-#ifdef EXPORTED_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
-#else /* EXPORTED_SYS_CALL_TABLE */
-#ifdef AFS_SPARC64_LINUX20_ENV
-static unsigned int *sys_call_table; /* changed to uint because SPARC64 has syscaltable of 32bit items */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+DEFINE_MUTEX(afs_global_lock);
#else
-static void ** sys_call_table; /* safer for other linuces */
-#endif
-#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.
- */
-#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 (*sys32_setgroupsp)(int gidsetsize, __kernel_gid_t32 *grouplist);
-#if defined(__NR_setgroups32)
-asmlinkage int (*sys32_setgroups32p)(int gidsetsize, __kernel_gid_t32 *grouplist);
-#endif
-#ifdef EXPORTED_SYS_CALL_TABLE
-extern unsigned int sys_call_table32[];
-#else
-static unsigned int *sys_call_table32;
-#endif
-asmlinkage int afs_syscall32(long syscall, long parm1, long parm2, long parm3,
- long parm4, long parm5)
+int __init
+afs_init(void)
{
-__asm__ __volatile__ ("
- srl %o4, 0, %o4
- mov %o7, %i7
- call afs_syscall
- srl %o5, 0, %o5
- ret
- nop
-");
-}
-#endif
-
-#ifdef AFS_IA64_LINUX20_ENV
-
-asmlinkage long
-afs_syscall_stub(int r0, int r1, long r2, long r3, long r4, long gp)
-{
-__asm__ __volatile__ ("
- alloc r42 = ar.pfs, 8, 3, 6, 0
- mov r41 = b0 /* save rp */
- mov out0 = in0
- mov out1 = in1
- mov out2 = in2
- mov out3 = in3
- mov out4 = in4
- mov out5 = gp /* save gp */
- ;;
-.L1: mov r3 = ip
- ;;
- addl r15=.fptr_afs_syscall-.L1,r3
- ;;
- ld8 r15=[r15]
- ;;
- ld8 r16=[r15],8
- ;;
- ld8 gp=[r15]
- mov b6=r16
- br.call.sptk.many b0 = b6
- ;;
- mov ar.pfs = r42
- mov b0 = r41
- mov gp = r48 /* restore gp */
- br.ret.sptk.many b0
-.fptr_afs_syscall:
- data8 @fptr(afs_syscall)
-");
-}
-
-asmlinkage long
-afs_xsetgroups_stub(int r0, int r1, long r2, long r3, long r4, long gp)
-{
-__asm__ __volatile__ ("
- alloc r42 = ar.pfs, 8, 3, 6, 0
- mov r41 = b0 /* save rp */
- mov out0 = in0
- mov out1 = in1
- mov out2 = in2
- mov out3 = in3
- mov out4 = in4
- mov out5 = gp /* save gp */
- ;;
-.L2: mov r3 = ip
- ;;
- addl r15=.fptr_afs_xsetgroups - .L2,r3
- ;;
- ld8 r15=[r15]
- ;;
- ld8 r16=[r15],8
- ;;
- ld8 gp=[r15]
- mov b6=r16
- br.call.sptk.many b0 = b6
- ;;
- mov ar.pfs = r42
- mov b0 = r41
- mov gp = r48 /* restore gp */
- br.ret.sptk.many b0
-.fptr_afs_xsetgroups:
- data8 @fptr(afs_xsetgroups)
-");
-}
-
-struct fptr
-{
- void *ip;
- unsigned long gp;
-};
-
-#endif /* AFS_IA64_LINUX20_ENV */
-
-#ifdef 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
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
-int __init afs_init(void)
-#else
-int init_module(void)
-#endif
-{
-#if defined(AFS_IA64_LINUX20_ENV)
- unsigned long kernel_gp;
- static struct fptr sys_kill, sys_settimeofday, sys_setgroups;
-#endif
- extern int afs_syscall();
- extern long afs_xsetgroups();
-#if defined(__NR_setgroups32)
- extern int afs_xsetgroups32();
-#endif
-#ifdef AFS_SPARC64_LINUX20_ENV
- extern int afs32_xsetgroups();
-#if defined(__NR_setgroups32)
- extern int afs32_xsetgroups32();
-#endif
-#endif
-
-#ifndef EXPORTED_SYS_CALL_TABLE
- unsigned long *ptr;
- unsigned long offset;
- unsigned long datalen;
- int ret;
- unsigned long token;
- char *mod_name;
- unsigned long mod_start;
- unsigned long mod_end;
- char *sec_name;
- unsigned long sec_start;
- unsigned long sec_end;
- char *sym_name;
- unsigned long sym_start;
- unsigned long sym_end;
-#endif
+ int err;
+ AFS_RWLOCK_INIT(&afs_xosi, "afs_xosi");
- RWLOCK_INIT(&afs_xosi, "afs_xosi");
-
- /* 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;
- }
+ osi_Init();
+#if !defined(AFS_NONFSTRANS)
+ osi_linux_nfssrv_init();
#endif
-#ifndef EXPORTED_SYS_CALL_TABLE
- sys_call_table=0;
-#ifdef EXPORTED_KALLSYMS_SYMBOL
- ret=1;
- token=0;
- while (ret) {
- sym_start=0;
- ret=kallsyms_symbol_to_address("sys_call_table", &token, &mod_name,
- &mod_start, &mod_end, &sec_name, &sec_start, &sec_end,
- &sym_name, &sym_start, &sym_end);
- if (ret && !strcmp(mod_name, "kernel"))
- break;
- }
- if (ret && sym_start) {
- sys_call_table=sym_start;
- }
-#else
-#ifdef EXPORTED_KALLSYMS_ADDRESS
- ret=kallsyms_address_to_symbol((unsigned long)&init_mm, &mod_name,
- &mod_start, &mod_end, &sec_name, &sec_start, &sec_end,
- &sym_name, &sym_start, &sym_end);
- ptr=(unsigned long *)sec_start;
- datalen=(sec_end-sec_start)/sizeof(unsigned long);
-#else
-#if defined(AFS_IA64_LINUX20_ENV)
- ptr = (unsigned long *) (&sys_close - 0x180000);
- datalen=0x180000/sizeof(ptr);
-#else
- ptr=(unsigned long *)&init_mm;
- datalen=16384;
-#endif
-#endif
- for (offset=0;offset <datalen;ptr++,offset++) {
-#if defined(AFS_IA64_LINUX20_ENV)
- unsigned long close_ip=(unsigned long) ((struct fptr *)&sys_close)->ip;
- unsigned long chdir_ip=(unsigned long) ((struct fptr *)&sys_chdir)->ip;
- unsigned long write_ip=(unsigned long) ((struct fptr *)&sys_write)->ip;
- if (ptr[0] == close_ip &&
- ptr[__NR_chdir - __NR_close] == chdir_ip &&
- ptr[__NR_write - __NR_close] == write_ip) {
- sys_call_table=(void *) &(ptr[ -1 * (__NR_close-1024)]);
- break;
- }
-#else
-#if defined(EXPORTED_SYS_CHDIR) && defined(EXPORTED_SYS_CLOSE)
- if (ptr[0] == (unsigned long)&sys_close &&
- ptr[__NR_chdir - __NR_close] == (unsigned long)&sys_chdir) {
- sys_call_table=ptr - __NR_close;
- break;
- }
-#else
- if (ptr[0] == (unsigned long)&sys_exit &&
- ptr[__NR_open - __NR_exit] == (unsigned long)&sys_open) {
- sys_call_table=ptr - __NR_exit;
- break;
- }
+#ifndef LINUX_KEYRING_SUPPORT
+ err = osi_syscall_init();
+ if (err)
+ return err;
#endif
+ err = afs_init_inodecache();
+ if (err) {
+#ifndef LINUX_KEYRING_SUPPORT
+ osi_syscall_clean();
#endif
+ return err;
}
-#ifdef EXPORTED_KALLSYMS_ADDRESS
- ret=kallsyms_address_to_symbol((unsigned long)sys_call_table, &mod_name,
- &mod_start, &mod_end, &sec_name, &sec_start, &sec_end,
- &sym_name, &sym_start, &sym_end);
- if (ret && strcmp(sym_name, "sys_call_table"))
- sys_call_table=0;
-#endif
+ err = register_filesystem(&afs_fs_type);
+ if (err) {
+ afs_destroy_inodecache();
+#ifndef LINUX_KEYRING_SUPPORT
+ osi_syscall_clean();
#endif
- if (!sys_call_table) {
- printf("Failed to find address of sys_call_table\n");
- return -EIO;
+ return err;
}
- printf("Found sys_call_table at %x\n", sys_call_table);
-# ifdef AFS_SPARC64_LINUX20_ENV
- error cant support this yet.
-#endif
-#endif /* EXPORTED_SYS_CALL_TABLE */
-
- /* Initialize pointers to kernel syscalls. */
-#if defined(AFS_IA64_LINUX20_ENV)
- kernel_gp = ((struct fptr *)printk)->gp;
-
- sys_settimeofdayp = (void *) &sys_settimeofday;
- sys_killp = (void *) &sys_kill;
-
- ((struct fptr *)sys_settimeofdayp)->ip =
- SYSCALL2POINTER sys_call_table[__NR_settimeofday - 1024];
- ((struct fptr *)sys_settimeofdayp)->gp = kernel_gp;
-
- ((struct fptr *)sys_killp)->ip =
- SYSCALL2POINTER sys_call_table[__NR_kill - 1024];
- ((struct fptr *)sys_killp)->gp = kernel_gp;
-#else /* !AFS_IA64_LINUX20_ENV */
- sys_settimeofdayp = SYSCALL2POINTER sys_call_table[__NR_settimeofday];
- sys_killp = SYSCALL2POINTER sys_call_table[__NR_kill];
-#endif /* AFS_IA64_LINUX20_ENV */
-
- /* setup AFS entry point. */
- if (
-#if defined(AFS_IA64_LINUX20_ENV)
- SYSCALL2POINTER sys_call_table[__NR_afs_syscall - 1024]
-#else
- SYSCALL2POINTER sys_call_table[__NR_afs_syscall]
-#endif
- == afs_syscall) {
- printf("AFS syscall entry point already in use!\n");
- return -EBUSY;
- }
-
-#if defined(AFS_IA64_LINUX20_ENV)
- afs_ni_syscall = sys_call_table[__NR_afs_syscall - 1024];
- sys_call_table[__NR_afs_syscall - 1024] = POINTER2SYSCALL ((struct fptr *)afs_syscall_stub)->ip;
-#else /* AFS_IA64_LINUX20_ENV */
- afs_ni_syscall = sys_call_table[__NR_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
-#endif /* AFS_IA64_LINUX20_ENV */
-
- osi_Init();
- register_filesystem(&afs_file_system);
-
- /* Intercept setgroups calls */
-#if defined(AFS_IA64_LINUX20_ENV)
- sys_setgroupsp = (void *) &sys_setgroups;
-
- ((struct fptr *)sys_setgroupsp)->ip =
- SYSCALL2POINTER sys_call_table[__NR_setgroups - 1024];
- ((struct fptr *)sys_setgroupsp)->gp = kernel_gp;
-
- sys_call_table[__NR_setgroups - 1024] = POINTER2SYSCALL ((struct fptr *)afs_xsetgroups_stub)->ip;
-#else /* AFS_IA64_LINUX20_ENV */
- sys_setgroupsp = SYSCALL2POINTER sys_call_table[__NR_setgroups];
- sys_call_table[__NR_setgroups] = POINTER2SYSCALL afs_xsetgroups;
-# ifdef AFS_SPARC64_LINUX20_ENV
- sys32_setgroupsp = SYSCALL2POINTER sys_call_table32[__NR_setgroups];
- sys_call_table32[__NR_setgroups] = POINTER2SYSCALL afs32_xsetgroups;
-# endif
-# if defined(__NR_setgroups32)
- sys_setgroups32p = SYSCALL2POINTER sys_call_table[__NR_setgroups32];
- sys_call_table[__NR_setgroups32] = POINTER2SYSCALL afs_xsetgroups32;
-# ifdef AFS_SPARC64_LINUX20_ENV
- sys32_setgroups32p = SYSCALL2POINTER sys_call_table32[__NR_setgroups32];
- sys_call_table32[__NR_setgroups32] = POINTER2SYSCALL afs32_xsetgroups32;
-# endif
-# endif
-#endif /* AFS_IA64_LINUX20_ENV */
osi_sysctl_init();
+#ifdef LINUX_KEYRING_SUPPORT
+ osi_keyring_init();
+#endif
+ osi_proc_init();
+ osi_ioctl_init();
+ afs_init_pagecopy();
return 0;
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
-void __exit afs_cleanup(void)
-#else
-void cleanup_module(void)
-#endif
+void __exit
+afs_cleanup(void)
{
- struct task_struct *t;
+ afs_shutdown_pagecopy();
+#ifdef LINUX_KEYRING_SUPPORT
+ osi_keyring_shutdown();
+#endif
osi_sysctl_clean();
+#ifndef LINUX_KEYRING_SUPPORT
+ osi_syscall_clean();
+#endif
+ unregister_filesystem(&afs_fs_type);
-#if defined(AFS_IA64_LINUX20_ENV)
- sys_call_table[__NR_setgroups - 1024] = POINTER2SYSCALL ((struct fptr *) sys_setgroupsp)->ip;
- sys_call_table[__NR_afs_syscall - 1024] = afs_ni_syscall;
-#else /* AFS_IA64_LINUX20_ENV */
- 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 sys32_setgroupsp;
- sys_call_table32[__NR_afs_syscall] = afs_ni_syscall32;
-# endif
-# if defined(__NR_setgroups32)
- sys_call_table[__NR_setgroups32] = POINTER2SYSCALL sys_setgroups32p;
-# ifdef AFS_SPARC64_LINUX20_ENV
- sys_call_table32[__NR_setgroups32] = POINTER2SYSCALL sys32_setgroups32p;
-# endif
-# endif
-#endif /* AFS_IA64_LINUX20_ENV */
- unregister_filesystem(&afs_file_system);
-
- osi_linux_free_inode_pages(); /* Invalidate all pages using AFS inodes. */
+ afs_destroy_inodecache();
+#if !defined(AFS_NONFSTRANS)
+ osi_linux_nfssrv_shutdown();
+#endif
+ shutdown_osisleep();
osi_linux_free_afs_memory();
+ osi_ioctl_clean();
+ osi_proc_clean();
+
return;
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+MODULE_LICENSE("http://www.openafs.org/dl/license10.html");
module_init(afs_init);
module_exit(afs_cleanup);
-#endif
-
-
-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) || defined(AFS_IA64_LINUX20_ENV) || defined(AFS_PARISC_LINUX24_ENV)
- return PAGE_OFFSET;
-#else
- struct task_struct *p, *q;
- /* search backward thru the circular list */
-#ifdef DEFINED_PREV_TASK
- for(q = current; p = q; q = prev_task(p))
-#else
- for(p = current; p; p = p->prev_task)
-#endif
- if (p->pid == 1)
- return p->addr_limit.seg;
-
- return 0;
-#endif
-}
git://git.openafs.org / openafs.git / blobdiff