* Linux module support routines.
*
*/
+#include <afsconfig.h>
#include "../afs/param.h"
+
+RCSID("$Header$");
+
#include "../afs/sysincludes.h"
#include "../afs/afsincludes.h"
#include "../h/unistd.h" /* For syscall numbers. */
#include "../h/mm.h"
#include <linux/module.h>
+#include <linux/slab.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+#include <linux/init.h>
+#endif
+
#ifdef AFS_SPARC64_LINUX24_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);
+asmlinkage long (*sys_setgroupsp)(int gidsetsize, gid_t *grouplist);
#ifdef AFS_SPARC64_LINUX20_ENV
extern unsigned int sys_call_table[]; /* changed to uint because SPARC64 has syscaltable of 32bit items */
}
#endif
+#ifdef AFS_IA64_LINUX20_ENV
+unsigned char ia64_syscall_stub[] =
+{
+ 0x00, 0x50, 0x45, 0x16, 0x80, 0x05, // [MII] alloc r42=ar.pfs,8,3,6,0
+ 0x90, 0x02, 0x00, 0x62, 0x00, 0x60, // mov r41=b0
+ 0x05, 0x00, 0x01, 0x84, // mov r43=r32
+ 0x00, 0x60, 0x01, 0x42, 0x00, 0x21, // [MII] mov r44=r33
+ 0xd0, 0x02, 0x88, 0x00, 0x42, 0xc0, // mov r45=r34
+ 0x05, 0x18, 0x01, 0x84, // mov r46=r35
+ 0x0d, 0x78, 0x01, 0x48, 0x00, 0x21, // [MFI] mov r47=r36
+ 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, // nop.f 0x0
+ 0x06, 0x08, 0x00, 0x84, // mov r48=gp;;
+ 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, // [MLX] nop.m 0x0
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, // movl r15=0x0;;
+ 0x01, 0x00, 0x00, 0x60, //
+ 0x0a, 0x80, 0x20, 0x1e, 0x18, 0x14, // [MMI] ld8 r16=[r15],8;;
+ 0x10, 0x00, 0x3c, 0x30, 0x20, 0xc0, // ld8 gp=[r15]
+ 0x00, 0x09, 0x00, 0x07, // mov b6=r16
+ 0x1d, 0x00, 0x00, 0x00, 0x01, 0x00, // [MFB] nop.m 0x0
+ 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, // nop.f 0x0
+ 0x68, 0x00, 0x00, 0x10, // br.call.sptk.many b0=b6;;
+ 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, // [MII] nop.m 0x0
+ 0x00, 0x50, 0x01, 0x55, 0x00, 0x00, // mov.i ar.pfs=r42
+ 0x90, 0x0a, 0x00, 0x07, // mov b0=r41
+ 0x1d, 0x08, 0x00, 0x60, 0x00, 0x21, // [MFB] mov gp=r48
+ 0x00, 0x00, 0x00, 0x02, 0x00, 0x80, // nop.f 0x0
+ 0x08, 0x00, 0x84, 0x00 // br.ret.sptk.many b0;;
+};
+
+void ia64_imm64_fixup(unsigned long v, void *code)
+{
+ unsigned long *bundle = (unsigned long *) code;
+
+ unsigned long insn;
+ unsigned long slot1;
+
+ insn = ((v & 0x8000000000000000) >> 27) | ((v & 0x0000000000200000)) |
+ ((v & 0x00000000001f0000) << 6) | ((v & 0x000000000000ff80) << 20) |
+ ((v & 0x000000000000007f) << 13);
+
+ slot1 = (v & 0x7fffffffffc00000) >> 22;
+
+ *bundle |= slot1 << 46;
+ *(bundle+1) |= insn << 23;
+ *(bundle+1) |= slot1 >> 18;
+}
+
+unsigned char *afs_syscall_stub, *afs_xsetgroups_stub;
+
+struct fptr
+{
+ unsigned long ip;
+ unsigned long gp;
+};
+
+#endif /* AFS_IA64_LINUX20_ENV */
+
#ifdef AFS_LINUX24_ENV
asmlinkage int (*sys_setgroups32p)(int gidsetsize, __kernel_gid32_t *grouplist);
#endif
#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 int afs_xsetgroups();
+ extern long afs_xsetgroups();
#if defined(__NR_setgroups32)
extern int afs_xsetgroups32();
#endif
#endif
#endif
+
+
/* obtain PAGE_OFFSET value */
afs_linux_page_offset = get_page_offset();
#endif
/* 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];
-#if !defined(AFS_ALPHA_LINUX20_ENV)
+#ifdef __NR_socketcall
sys_socketcallp = SYSCALL2POINTER sys_call_table[__NR_socketcall];
#endif /* no socketcall on alpha */
sys_killp = SYSCALL2POINTER sys_call_table[__NR_kill];
+#endif /* AFS_IA64_LINUX20_ENV */
/* setup AFS entry point. */
- if (SYSCALL2POINTER sys_call_table[__NR_afs_syscall] == afs_syscall) {
+ 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];
+
+ afs_syscall_stub = (void *) kmalloc(sizeof(ia64_syscall_stub), GFP_KERNEL);
+ memcpy(afs_syscall_stub, ia64_syscall_stub, sizeof(ia64_syscall_stub));
+ ia64_imm64_fixup((unsigned long)afs_syscall, afs_syscall_stub+0x30);
+ sys_call_table[__NR_afs_syscall - 1024] = POINTER2SYSCALL afs_syscall_stub;
+#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
+# 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
+#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;
+
+ afs_xsetgroups_stub = (void *) kmalloc(sizeof(ia64_syscall_stub), GFP_KERNEL);
+ memcpy(afs_xsetgroups_stub, ia64_syscall_stub, sizeof(ia64_syscall_stub));
+ ia64_imm64_fixup((unsigned long)afs_xsetgroups, afs_xsetgroups_stub+0x30);
+
+ ((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 afs_xsetgroups_stub;
+#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
+# 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)
+# 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
+# ifdef AFS_SPARC64_LINUX20_ENV
sys32_setgroups32p = SYSCALL2POINTER sys_call_table32[__NR_setgroups32];
sys_call_table32[__NR_setgroups32] = POINTER2SYSCALL afs32_xsetgroups32;
-#endif
-#endif
+# endif
+# endif
+#endif /* AFS_IA64_LINUX20_ENV */
return 0;
}
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+void __exit afs_cleanup(void)
+#else
void cleanup_module(void)
+#endif
{
struct task_struct *t;
+#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
+# 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)
+# endif
+# if defined(__NR_setgroups32)
sys_call_table[__NR_setgroups32] = POINTER2SYSCALL sys_setgroups32p;
-#ifdef AFS_SPARC64_LINUX20_ENV
+# ifdef AFS_SPARC64_LINUX20_ENV
sys_call_table32[__NR_setgroups32] = POINTER2SYSCALL sys32_setgroups32p;
-#endif
-#endif
+# endif
+# endif
+#endif /* AFS_IA64_LINUX20_ENV */
unregister_filesystem(&afs_file_system);
osi_linux_free_inode_pages(); /* Invalidate all pages using AFS inodes. */
return;
}
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+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)
+#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;
git://git.openafs.org / openafs.git / blobdiff