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amd64-hook-ia32-table-20030519
first cut at an opteron port
This commit is contained in:
Derrick Brashear
parent
9dfb5d6047
commit
831e172463
@ -36,6 +36,7 @@ static /**/const char *const rcsid[] = { (char *)rcsid, "\100(#)" msg }
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#undef EXPORTED_KALLSYMS_ADDRESS
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#undef EXPORTED_KALLSYMS_SYMBOL
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#undef EXPORTED_SYS_CALL_TABLE
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#undef EXPORTED_IA32_SYS_CALL_TABLE
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#undef EXPORTED_TASKLIST_LOCK
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#undef INODE_SETATTR_NOT_VOID
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#undef RECALC_SIGPENDING_TAKES_VOID
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@ -183,6 +183,7 @@ case $system in
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LINUX_EXPORTS_KALLSYMS_ADDRESS
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LINUX_EXPORTS_KALLSYMS_SYMBOL
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LINUX_EXPORTS_SYS_CALL_TABLE
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LINUX_EXPORTS_IA32_SYS_CALL_TABLE
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LINUX_EXPORTS_SYS_CHDIR
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LINUX_EXPORTS_SYS_CLOSE
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LINUX_EXPORTS_SYS_WAIT4
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@ -217,6 +218,9 @@ case $system in
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if test "x$ac_cv_linux_exports_sys_call_table" = "xyes"; then
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AC_DEFINE(EXPORTED_SYS_CALL_TABLE)
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fi
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if test "x$ac_cv_linux_exports_ia32_sys_call_table" = "xyes"; then
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AC_DEFINE(EXPORTED_IA32_SYS_CALL_TABLE)
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fi
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if test "x$ac_cv_linux_exports_kallsyms_symbol" = "xyes"; then
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AC_DEFINE(EXPORTED_KALLSYMS_SYMBOL)
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fi
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@ -21,6 +21,10 @@ RCSID("$Header$");
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#include "h/unistd.h" /* For syscall numbers. */
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#include "h/mm.h"
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#ifdef AFS_AMD64_LINUX20_ENV
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#include "../asm/ia32_unistd.h"
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#endif
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#include <linux/module.h>
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#include <linux/slab.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
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@ -31,7 +35,6 @@ RCSID("$Header$");
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#include <linux/syscall.h>
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#endif
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#ifdef AFS_SPARC64_LINUX24_ENV
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#define __NR_setgroups32 82 /* This number is not exported for some bizarre reason. */
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#endif
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@ -73,6 +76,14 @@ static unsigned int afs_ni_syscall = 0;
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static void* afs_ni_syscall = 0;
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#endif
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#ifdef AFS_AMD64_LINUX20_ENV
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#ifdef EXPORTED_IA32_SYS_CALL_TABLE
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extern void * ia32_sys_call_table[];
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#else
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static void **ia32_sys_call_table;
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#endif
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#endif
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#ifdef AFS_SPARC64_LINUX20_ENV
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static unsigned int afs_ni_syscall32 = 0;
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asmlinkage int (*sys32_setgroupsp)(int gidsetsize, __kernel_gid_t32 *grouplist);
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@ -195,7 +206,7 @@ int init_module(void)
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#endif
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extern int afs_syscall();
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extern long afs_xsetgroups();
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#if defined(__NR_setgroups32)
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#if defined(__NR_setgroups32) || defined(__NR_ia32_setgroups32)
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extern int afs_xsetgroups32();
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#endif
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#ifdef AFS_SPARC64_LINUX20_ENV
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@ -325,6 +336,67 @@ int init_module(void)
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#endif
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#endif /* EXPORTED_SYS_CALL_TABLE */
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#ifdef AFS_AMD64_LINUX20_ENV
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#ifndef EXPORTED_IA32_SYS_CALL_TABLE
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ia32_sys_call_table=0;
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#ifdef EXPORTED_KALLSYMS_SYMBOL
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ret=1;
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token=0;
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while (ret) {
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sym_start=0;
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ret=kallsyms_symbol_to_address("ia32_sys_call_table", &token,
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&mod_name, &mod_start, &mod_end,
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&sec_name, &sec_start, &sec_end,
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&sym_name, &sym_start, &sym_end);
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if (ret && !strcmp(mod_name, "kernel"))
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break;
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}
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if (ret && sym_start) {
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ia32_sys_call_table=sym_start;
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}
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#else /* EXPORTED_KALLSYMS_SYMBOL */
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#ifdef EXPORTED_KALLSYMS_ADDRESS
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ret=kallsyms_address_to_symbol((unsigned long)&interruptible_sleep_on,
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&mod_name, &mod_start, &mod_end, &sec_name,
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&sec_start, &sec_end,
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&sym_name, &sym_start, &sym_end);
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ptr=(unsigned long *)sec_start;
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datalen=(sec_end-sec_start)/sizeof(unsigned long);
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#else /* EXPORTED_KALLSYMS_ADDRESS */
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#if defined(AFS_AMD64_LINUX20_ENV)
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ptr=(unsigned long *)&interruptible_sleep_on;
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datalen=0x180000/sizeof(ptr);
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#else /* AFS_AMD64_LINUX20_ENV */
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ptr=(unsigned long *)&interruptible_sleep_on;
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datalen=16384;
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#endif /* AFS_AMD64_LINUX20_ENV */
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#endif /* EXPORTED_KALLSYMS_ADDRESS */
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for (offset=0;offset <datalen;ptr++,offset++) {
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if (ptr[0] == (unsigned long)&sys_exit &&
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ptr[__NR_ia32_open - __NR_ia32_exit] == (unsigned long)&sys_open) {
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ia32_sys_call_table=ptr - __NR_ia32_exit;
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break;
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}
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}
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#ifdef EXPORTED_KALLSYMS_ADDRESS
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ret=kallsyms_address_to_symbol((unsigned long)ia32_sys_call_table,
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&mod_name, &mod_start, &mod_end, &sec_name,
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&sec_start, &sec_end,
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&sym_name, &sym_start, &sym_end);
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if (ret && strcmp(sym_name, "ia32_sys_call_table"))
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ia32_sys_call_table=0;
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#endif /* EXPORTED_KALLSYMS_ADDRESS */
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#endif /* EXPORTED_KALLSYMS_SYMBOL */
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if (!ia32_sys_call_table) {
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printf("Warning: Failed to find address of ia32_sys_call_table\n");
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} else {
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printf("Found ia32_sys_call_table at %x\n", ia32_sys_call_table);
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}
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#else
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printf("Found ia32_sys_call_table at %x\n", ia32_sys_call_table);
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#endif /* IA32_SYS_CALL_TABLE */
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#endif
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/* Initialize pointers to kernel syscalls. */
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#if defined(AFS_IA64_LINUX20_ENV)
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kernel_gp = ((struct fptr *)printk)->gp;
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@ -362,6 +434,11 @@ int init_module(void)
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sys_call_table32[__NR_afs_syscall] = POINTER2SYSCALL afs_syscall32;
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# endif
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#endif /* AFS_IA64_LINUX20_ENV */
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#ifdef AFS_AMD64_LINUX20_ENV
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if (ia32_sys_call_table) {
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ia32_sys_call_table[__NR_ia32_afs_syscall] = POINTER2SYSCALL afs_syscall;
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}
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#endif
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osi_Init();
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register_filesystem(&afs_file_system);
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@ -392,6 +469,14 @@ int init_module(void)
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# endif
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#endif /* AFS_IA64_LINUX20_ENV */
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#ifdef AFS_AMD64_LINUX20_ENV
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if (ia32_sys_call_table) {
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ia32_sys_call_table[__NR_ia32_setgroups] = POINTER2SYSCALL afs_xsetgroups;
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# if defined(__NR_ia32_setgroups32)
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ia32_sys_call_table[__NR_ia32_setgroups32] = POINTER2SYSCALL afs_xsetgroups32;
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# endif
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}
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#endif
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osi_sysctl_init();
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return 0;
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@ -424,6 +509,15 @@ void cleanup_module(void)
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# endif
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# endif
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#endif /* AFS_IA64_LINUX20_ENV */
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#ifdef AFS_AMD64_LINUX20_ENV
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if (ia32_sys_call_table) {
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ia32_sys_call_table[__NR_ia32_setgroups] = POINTER2SYSCALL sys_setgroupsp;
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ia32_sys_call_table[__NR_ia32_afs_syscall] = afs_ni_syscall;
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# if defined(__NR_setgroups32)
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ia32_sys_call_table[__NR_ia32_setgroups32] = POINTER2SYSCALL sys_setgroups32p;
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#endif
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}
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#endif
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unregister_filesystem(&afs_file_system);
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osi_linux_free_inode_pages(); /* Invalidate all pages using AFS inodes. */
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@ -120,6 +120,23 @@ AC_MSG_RESULT($ac_cv_linux_exports_sys_call_table)
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CPPFLAGS="$save_CPPFLAGS"])
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AC_DEFUN(LINUX_EXPORTS_IA32_SYS_CALL_TABLE, [
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AC_MSG_CHECKING(for exported ia32_sys_call_table)
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save_CPPFLAGS="$CPPFLAGS"
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CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -D__KERNEL__ $CPPFLAGS"
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AC_CACHE_VAL(ac_cv_linux_exports_ia32_sys_call_table,
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[
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AC_TRY_COMPILE(
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[#include <linux/modversions.h>],
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[#ifndef __ver_ia32_sys_call_table
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#error ia32_sys_call_table not exported
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#endif],
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ac_cv_linux_exports_ia32_sys_call_table=yes,
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ac_cv_linux_exports_ia32_sys_call_table=no)])
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AC_MSG_RESULT($ac_cv_linux_exports_ia32_sys_call_table)
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CPPFLAGS="$save_CPPFLAGS"])
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AC_DEFUN(LINUX_EXPORTS_SYS_CHDIR, [
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AC_MSG_CHECKING(for exported sys_chdir)
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save_CPPFLAGS="$CPPFLAGS"
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