-AC_DEFUN([LINUX_COMPLETION_H_EXISTS], [
-AC_MSG_CHECKING(for linux/completion.h existance)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_completion_h_exists,
+AC_DEFUN([LINUX_EXPORTS_TASKLIST_LOCK], [
+ AC_CHECK_LINUX_BUILD([for exported tasklist_lock],
+ [ac_cv_linux_exports_tasklist_lock],
+[#include <linux/sched.h>],
[
-AC_TRY_COMPILE(
-[#include <linux/completion.h>
-#include <linux/version.h>],
+extern rwlock_t tasklist_lock __attribute__((weak));
+read_lock(&tasklist_lock);
+],
+ [EXPORTED_TASKLIST_LOCK],
+ [define if tasklist_lock exported],
+ [])
+])
+
+AC_DEFUN([LINUX_COMPLETION_H_EXISTS], [
+ AC_CHECK_LINUX_BUILD([for linux/completion.h],
+ [ac_cv_linux_completion_h_exists],
+[#include <linux/version.h>
+#include <linux/completion.h>],
[struct completion _c;
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,8)
lose
-#endif
-],
-ac_cv_linux_completion_h_exists=yes,
-ac_cv_linux_completion_h_exists=no)])
-AC_MSG_RESULT($ac_cv_linux_completion_h_exists)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_DEFINES_FOR_EACH_PROCESS], [
-AC_MSG_CHECKING(for defined for_each_process)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_defines_for_each_process,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[#ifndef for_each_process(p)
-#error for_each_process not defined
-#endif],
-ac_cv_linux_defines_for_each_process=yes,
-ac_cv_linux_defines_for_each_process=no)])
-AC_MSG_RESULT($ac_cv_linux_defines_for_each_process)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_DEFINES_PREV_TASK], [
-AC_MSG_CHECKING(for defined prev_task)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_defines_prev_task,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[#ifndef prev_task(p)
-#error prev_task not defined
#endif],
-ac_cv_linux_defines_prev_task=yes,
-ac_cv_linux_defines_prev_task=no)])
-AC_MSG_RESULT($ac_cv_linux_defines_prev_task)
-CPPFLAGS="$save_CPPFLAGS"])
+ [HAVE_LINUX_COMPLETION_H]
+ [Define if your kernel has a usable linux/completion.h],
+ [])
+])
AC_DEFUN([LINUX_EXPORTS_INIT_MM], [
-AC_MSG_CHECKING(for exported init_mm)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_exports_init_mm,
-[
-AC_TRY_COMPILE(
-[#include <linux/modversions.h>],
-[#ifndef __ver_init_mm
-#error init_mm not exported
-#endif],
-ac_cv_linux_exports_init_mm=yes,
-ac_cv_linux_exports_init_mm=no)])
-AC_MSG_RESULT($ac_cv_linux_exports_init_mm)
-CPPFLAGS="$save_CPPFLAGS"])
+ AC_CHECK_LINUX_BUILD([for exported init_mm],
+ [ac_cv_linux_exports_init_mm],
+ [extern struct mm_struct init_mm;],
+ [void *address = &init_mm; printk("%p\n", address);],
+ [EXPORTED_INIT_MM],
+ [define if your kernel exports init_mm],
+ [])
+ ])
AC_DEFUN([LINUX_EXPORTS_KALLSYMS_ADDRESS], [
-AC_MSG_CHECKING(for exported kallsyms_address_to_symbol)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_exports_kallsyms_address,
-[
-AC_TRY_COMPILE(
-[#include <linux/modversions.h>],
+ AC_CHECK_LINUX_BUILD([for exported kallsyms_address_to_symbol],
+ [ac_cv_linux_exports_kallsyms_address],
+ [#include <linux/modversions.h>],
[#ifndef __ver_kallsyms_address_to_symbol
#error kallsyms_address_to_symbol not exported
#endif],
-ac_cv_linux_exports_kallsyms_address=yes,
-ac_cv_linux_exports_kallsyms_address=no)])
-AC_MSG_RESULT($ac_cv_linux_exports_kallsyms_address)
-CPPFLAGS="$save_CPPFLAGS"])
+ [EXPORTED_KALLSYMS_ADDRESS],
+ [define if your linux kernel exports kallsyms address],
+ [])
+])
AC_DEFUN([LINUX_EXPORTS_KALLSYMS_SYMBOL], [
-AC_MSG_CHECKING(for exported kallsyms_symbol_to_address)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_exports_kallsyms_symbol,
-[
-AC_TRY_COMPILE(
-[#include <linux/modversions.h>],
+ AC_CHECK_LINUX_BUILD([for exported kallsyms_symbol_to_address],
+ [ac_cv_linux_exports_kallsyms_symbol],
+ [#include <linux/modversions.h>],
[#ifndef __ver_kallsyms_symbol_to_address
#error kallsyms_symbol_to_address not exported
#endif],
-ac_cv_linux_exports_kallsyms_symbol=yes,
-ac_cv_linux_exports_kallsyms_symbol=no)])
-AC_MSG_RESULT($ac_cv_linux_exports_kallsyms_symbol)
-CPPFLAGS="$save_CPPFLAGS"])
+ [EXPORTED_KALLSYMS_SYMBOL],
+ [define if your linux kernel exports kallsyms],
+ [])
+])
AC_DEFUN([LINUX_EXPORTS_SYS_CALL_TABLE], [
-AC_MSG_CHECKING(for exported sys_call_table)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_exports_sys_call_table,
-[
-AC_TRY_COMPILE(
-[#include <linux/modversions.h>],
+ AC_CHECK_LINUX_BUILD([for exported sys_call_table],
+ [ac_cv_linux_exports_sys_call_table],
+ [#include <linux/modversions.h>],
[#ifndef __ver_sys_call_table
#error sys_call_table not exported
#endif],
-ac_cv_linux_exports_sys_call_table=yes,
-ac_cv_linux_exports_sys_call_table=no)])
-AC_MSG_RESULT($ac_cv_linux_exports_sys_call_table)
-CPPFLAGS="$save_CPPFLAGS"])
+ [EXPORTED_SYS_CALL_TABLE],
+ [define if your linux kernel exports sys_call_table],
+ [])
+])
AC_DEFUN([LINUX_EXPORTS_IA32_SYS_CALL_TABLE], [
-AC_MSG_CHECKING(for exported ia32_sys_call_table)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_exports_ia32_sys_call_table,
-[
-AC_TRY_COMPILE(
-[#include <linux/modversions.h>],
+ AC_CHECK_LINUX_BUILD([for exported ia32_sys_call_table],
+ [ac_cv_linux_exports_ia32_sys_call_table],
+ [#include <linux/modversions.h>],
[#ifndef __ver_ia32_sys_call_table
#error ia32_sys_call_table not exported
#endif],
-ac_cv_linux_exports_ia32_sys_call_table=yes,
-ac_cv_linux_exports_ia32_sys_call_table=no)])
-AC_MSG_RESULT($ac_cv_linux_exports_ia32_sys_call_table)
-CPPFLAGS="$save_CPPFLAGS"])
+ [EXPORTED_IA32_SYS_CALL_TABLE],
+ [define if your linux kernel exports ia32_sys_call_table],
+ [])
+])
AC_DEFUN([LINUX_EXPORTS_SYS_CHDIR], [
-AC_MSG_CHECKING(for exported sys_chdir)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_exports_sys_chdir,
-[
-AC_TRY_COMPILE(
-[#include <linux/modversions.h>],
-[#ifndef __ver_sys_chdir
-#error sys_chdir not exported
-#endif],
-ac_cv_linux_exports_sys_chdir=yes,
-ac_cv_linux_exports_sys_chdir=no)])
-AC_MSG_RESULT($ac_cv_linux_exports_sys_chdir)
-CPPFLAGS="$save_CPPFLAGS"])
+ AC_CHECK_LINUX_BUILD([for exported sys_chdir],
+ [ac_cv_linux_exports_sys_chdir],
+ [extern asmlinkage long sys_chdir(void) __attribute__((weak));],
+ [void *address = &sys_chdir; printk("%p\n", address);],
+ [EXPORTED_SYS_CHDIR],
+ [define if your linux kernel exports sys_chdir],
+ [])
+])
+
+
+AC_DEFUN([LINUX_EXPORTS_SYS_OPEN], [
+ AC_CHECK_LINUX_BUILD([for exported sys_open],
+ [ac_cv_linux_exports_sys_open],
+ [extern asmlinkage long sys_open(void) __attribute__((weak));],
+ [void *address = &sys_open; printk("%p\n", address);],
+ [EXPORTED_SYS_OPEN],
+ [define if your linux kernel exports sys_open],
+ [])
+])
+
+
+AC_DEFUN([LINUX_RECALC_SIGPENDING_ARG_TYPE], [
+ AC_CHECK_LINUX_BUILD([for recalc_sigpending arg type],
+ [ac_cv_linux_func_recalc_sigpending_takes_void],
+ [#include <linux/sched.h>],
+ [recalc_sigpending();],
+ [RECALC_SIGPENDING_TAKES_VOID],
+ [define if your recalc_sigpending takes void],
+ [])
+])
-AC_DEFUN([LINUX_EXPORTS_SYS_CLOSE], [
-AC_MSG_CHECKING(for exported sys_close)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_exports_sys_close,
-[
-AC_TRY_COMPILE(
-[#include <linux/modversions.h>],
-[#ifndef __ver_sys_close
-#error sys_close not exported
+AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGNAL_RLIM], [
+ AC_CHECK_LINUX_BUILD([for signal->rlim in struct task_struct],
+ [ac_cv_linux_sched_struct_task_struct_has_signal_rlim],
+ [#include <linux/sched.h>],
+ [struct task_struct _tsk; printk("%d\n", _tsk.signal->rlim);],
+ [STRUCT_TASK_STRUCT_HAS_SIGNAL_RLIM],
+ [define if your struct task_struct has signal->rlim],
+ [])
+])
+
+
+AC_DEFUN([LINUX_KERNEL_POSIX_LOCK_FILE_WAIT_ARG], [
+ AC_CHECK_LINUX_BUILD([for 3rd argument in posix_lock_file found in new kernels],
+ [ac_cv_linux_kernel_posix_lock_file_wait_arg],
+ [#include <linux/fs.h>],
+ [posix_lock_file(0,0,0);],
+ [POSIX_LOCK_FILE_WAIT_ARG],
+ [define if your kernel uses 3 arguments for posix_lock_file],
+ [])
+])
+
+AC_DEFUN([LINUX_KERNEL_SOCK_CREATE], [
+ AC_CHECK_LINUX_BUILD([for 5th argument in sock_create found in some SELinux kernels],
+ [ac_cv_linux_kernel_sock_create_v],
+ [#include <linux/net.h>],
+ [sock_create(0,0,0,0,0);],
+ [LINUX_KERNEL_SOCK_CREATE_V],
+ [define if your linux kernel uses 5 arguments for sock_create],
+ [])
+])
+
+
+AC_DEFUN([LINUX_INODE_SETATTR_RETURN_TYPE], [
+ AC_CHECK_LINUX_BUILD([for inode_setattr return type],
+ [ac_cv_linux_func_inode_setattr_returns_int],
+ [#include <linux/fs.h>],
+ [struct inode _inode;
+ struct iattr _iattr;
+ int i;
+ i = inode_setattr(&_inode, &_iattr);],
+ [INODE_SETATTR_NOT_VOID],
+ [define if your setattr return return non-void],
+ [])
+])
+
+
+
+AC_DEFUN([LINUX_AOP_WRITEBACK_CONTROL], [
+ AC_CHECK_LINUX_BUILD([whether aop.writepage takes a writeback_control],
+ [ac_cv_linux_func_a_writepage_takes_writeback_control],
+[#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/writeback.h>],
+[struct address_space_operations _aops;
+struct page _page;
+struct writeback_control _writeback_control;
+(void)_aops.writepage(&_page, &_writeback_control);],
+ [AOP_WRITEPAGE_TAKES_WRITEBACK_CONTROL],
+ [define if aops.writepage takes a struct writeback_control],
+ [])
+])
+
+
+AC_DEFUN([LINUX_REFRIGERATOR], [
+ AC_CHECK_LINUX_BUILD([whether refrigerator takes PF_FREEZE],
+ [ac_cv_linux_func_refrigerator_takes_pf_freeze],
+[#include <linux/sched.h>
+#ifdef HAVE_LINUX_FREEZER_H
+#include <linux/freezer.h>
#endif],
-ac_cv_linux_exports_sys_close=yes,
-ac_cv_linux_exports_sys_close=no)])
-AC_MSG_RESULT($ac_cv_linux_exports_sys_close)
-CPPFLAGS="$save_CPPFLAGS"])
-
+ [refrigerator(PF_FREEZE);],
+ [LINUX_REFRIGERATOR_TAKES_PF_FREEZE],
+ [define if your refrigerator takes PF_FREEZE],
+ [])
+])
+
+
+AC_DEFUN([LINUX_IOP_I_CREATE_TAKES_NAMEIDATA], [
+ AC_CHECK_LINUX_BUILD([whether inode_operations.create takes a nameidata],
+ [ac_cv_linux_func_i_create_takes_nameidata],
+[#include <linux/fs.h>
+#include <linux/namei.h>],
+[struct inode _inode;
+struct dentry _dentry;
+struct nameidata _nameidata;
+(void)_inode.i_op->create(&_inode, &_dentry, 0, &_nameidata);],
-AC_DEFUN([LINUX_EXPORTS_SYS_WAIT4], [
-AC_MSG_CHECKING(for exported sys_wait4)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_exports_sys_wait4,
-[
-AC_TRY_COMPILE(
-[#include <linux/modversions.h>],
-[#ifndef __ver_sys_wait4
-#error sys_wait4 not exported
-#endif],
-ac_cv_linux_exports_sys_wait4=yes,
-ac_cv_linux_exports_sys_wait4=no)])
-AC_MSG_RESULT($ac_cv_linux_exports_sys_wait4)
-CPPFLAGS="$save_CPPFLAGS"])
+ [IOP_CREATE_TAKES_NAMEIDATA],
+ [define if your iops.create takes a nameidata argument],
+ [])
+])
-AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_CDEV], [
-AC_MSG_CHECKING(for i_cdev in struct inode)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_cdev,
-[
-AC_TRY_COMPILE(
-[#include <linux/fs.h>],
+AC_DEFUN([LINUX_IOP_I_LOOKUP_TAKES_NAMEIDATA], [
+ AC_CHECK_LINUX_BUILD([whether inode_operations.lookup takes a nameidata],
+ [ac_cv_linux_func_i_lookup_takes_nameidata],
+[#include <linux/fs.h>
+#include <linux/namei.h>],
[struct inode _inode;
-printf("%d\n", _inode.i_cdev);],
-ac_cv_linux_fs_struct_inode_has_i_cdev=yes,
-ac_cv_linux_fs_struct_inode_has_i_cdev=no)])
-AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_cdev)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_DEVICES], [
-AC_MSG_CHECKING(for i_devices in struct inode)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_cdev,
-[
-AC_TRY_COMPILE(
-[#include <linux/fs.h>],
+struct dentry _dentry;
+struct nameidata _nameidata;
+(void)_inode.i_op->lookup(&_inode, &_dentry, &_nameidata);],
+ [IOP_LOOKUP_TAKES_NAMEIDATA],
+ [define if your iops.lookup takes a nameidata argument],
+ [])
+])
+
+
+AC_DEFUN([LINUX_IOP_I_PERMISSION_TAKES_NAMEIDATA], [
+ AC_CHECK_LINUX_BUILD([whether inode_operations.permission takes a nameidata],
+ [ac_cv_linux_func_i_permission_takes_nameidata],
+[#include <linux/fs.h>
+#include <linux/namei.h>],
[struct inode _inode;
-printf("%d\n", _inode.i_devices);],
-ac_cv_linux_fs_struct_inode_has_i_devices=yes,
-ac_cv_linux_fs_struct_inode_has_i_devices=no)])
-AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_devices)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_DIRTY_DATA_BUFFERS], [
-AC_MSG_CHECKING(for i_dirty_data_buffers in struct inode)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_dirty_data_buffers,
-[
-AC_TRY_COMPILE(
-[#include <linux/fs.h>],
+struct nameidata _nameidata;
+(void)_inode.i_op->permission(&_inode, 0, &_nameidata);],
+ [IOP_PERMISSION_TAKES_NAMEIDATA],
+ [define if your iops.permission takes a nameidata argument],
+ [-Werror])
+])
+
+
+AC_DEFUN([LINUX_IOP_I_PERMISSION_TAKES_FLAGS], [
+ AC_CHECK_LINUX_BUILD([whether inode_operations.permission takes flags],
+ [ac_cv_linux_func_i_permission_takes_flags],
+ [#include <linux/fs.h>],
+ [struct inode _inode = {0};
+ unsigned int flags = 0;
+ (void)_inode.i_op->permission(&_inode, 0, flags);],
+ [IOP_PERMISSION_TAKES_FLAGS],
+ [define if your iops.permission takes a flags argument],
+ [-Werror])
+])
+
+
+AC_DEFUN([LINUX_IOP_I_PUT_LINK_TAKES_COOKIE], [
+ AC_CHECK_LINUX_BUILD([whether inode_operations.put_link takes an opaque cookie],
+ [ac_cv_linux_func_i_put_link_takes_cookie],
+[#include <linux/fs.h>
+#include <linux/namei.h>],
[struct inode _inode;
-printf("%d\n", _inode.i_dirty_data_buffers);],
-ac_cv_linux_fs_struct_inode_has_i_dirty_data_buffers=yes,
-ac_cv_linux_fs_struct_inode_has_i_dirty_data_buffers=no)])
-AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_dirty_data_buffers)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_MAPPING_OVERLOAD], [
-AC_MSG_CHECKING(for i_mapping_overload in struct inode)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_mapping_overload,
-[
-AC_TRY_COMPILE(
-[#include <linux/fs.h>],
-[struct inode _inode;
-printf("%d\n", _inode.i_mapping_overload);],
-ac_cv_linux_fs_struct_inode_has_i_mapping_overload=yes,
-ac_cv_linux_fs_struct_inode_has_i_mapping_overload=no)])
-AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_mapping_overload)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_MMAP_SHARED], [
-AC_MSG_CHECKING(for i_mmap_shared in struct inode)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_mmap_shared,
-[
-AC_TRY_COMPILE(
-[#include <linux/fs.h>],
-[struct inode _inode;
-printf("%d\n", _inode.i_mmap_shared);],
-ac_cv_linux_fs_struct_inode_has_i_mmap_shared=yes,
-ac_cv_linux_fs_struct_inode_has_i_mmap_shared=no)])
-AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_mmap_shared)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_SECURITY], [
-AC_MSG_CHECKING(for i_security in struct inode)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_security,
-[
-AC_TRY_COMPILE(
-[#include <linux/fs.h>],
+struct dentry _dentry;
+struct nameidata _nameidata;
+void *cookie;
+(void)_inode.i_op->put_link(&_dentry, &_nameidata, cookie);],
+ [IOP_PUT_LINK_TAKES_COOKIE],
+ [define if your iops.put_link takes a cookie],
+ [])
+])
+
+
+AC_DEFUN([LINUX_DOP_D_REVALIDATE_TAKES_NAMEIDATA], [
+ AC_CHECK_LINUX_BUILD([whether dentry_operations.d_revalidate takes a nameidata],
+ [ac_cv_linux_func_d_revalidate_takes_nameidata],
+[#include <linux/fs.h>
+#include <linux/namei.h>],
+[struct dentry _dentry;
+struct nameidata _nameidata;
+(void)_dentry.d_op->d_revalidate(&_dentry, &_nameidata);],
+ [DOP_REVALIDATE_TAKES_NAMEIDATA],
+ [define if your dops.d_revalidate takes a nameidata argument],
+ [])
+])
+
+
+AC_DEFUN([LINUX_GET_SB_HAS_STRUCT_VFSMOUNT], [
+ AC_CHECK_LINUX_BUILD([for struct vfsmount * in get_sb_nodev()],
+ [ac_cv_linux_get_sb_has_struct_vfsmount],
+ [#include <linux/fs.h>],
+ [get_sb_nodev(0,0,0,0,0);],
+ [GET_SB_HAS_STRUCT_VFSMOUNT],
+ [define if your get_sb_nodev needs a struct vfsmount argument],
+ [])
+])
+
+
+AC_DEFUN([LINUX_STATFS_TAKES_DENTRY], [
+ AC_CHECK_LINUX_BUILD([for dentry in statfs],
+ [ac_cv_linux_statfs_takes_dentry],
+[#include <linux/fs.h>
+#include <linux/statfs.h>],
+[extern int simple_statfs(struct dentry *, struct kstatfs *);],
+ [STATFS_TAKES_DENTRY],
+ [define if your statfs takes a dentry argument],
+ [])
+])
+
+
+AC_DEFUN([LINUX_LINUX_KEYRING_SUPPORT], [
+ AC_CHECK_LINUX_BUILD([for linux kernel keyring support],
+ [ac_cv_linux_keyring_support],
+[#include <linux/rwsem.h>
+#ifdef HAVE_LINUX_KEY_TYPE_H
+#include <linux/key-type.h>
+#endif
+#include <linux/key.h>
+#include <linux/keyctl.h>],
+[#ifdef CONFIG_KEYS
+request_key(NULL, NULL, NULL);
+#if !defined(KEY_POS_VIEW) || !defined(KEY_POS_SEARCH) || !defined(KEY_POS_SETATTR)
+#error "Your linux/key.h does not contain KEY_POS_VIEW or KEY_POS_SEARCH or KEY_POS_SETATTR"
+#endif
+#else
+#error rebuild your kernel with CONFIG_KEYS
+#endif],
+ [LINUX_KEYRING_SUPPORT],
+ [define if your kernel has keyring support],
+ [])
+])
+
+
+AC_DEFUN([LINUX_KEY_ALLOC_NEEDS_STRUCT_TASK], [
+ AC_CHECK_LINUX_BUILD([if key_alloc() takes a struct task *],
+ [ac_cv_key_alloc_needs_struct_task],
+ [#include <linux/rwsem.h>
+ #include <linux/key.h> ],
+ [struct task_struct *t=NULL;
+ (void) key_alloc(NULL, NULL, 0, 0, t, 0, 0);],
+ [KEY_ALLOC_NEEDS_STRUCT_TASK],
+ [define if key_alloc takes a struct task *],
+ [-Werror -Wno-pointer-arith])
+])
+
+
+AC_DEFUN([LINUX_KEY_ALLOC_NEEDS_CRED], [
+ AC_CHECK_LINUX_BUILD([if key_alloc() takes credentials],
+ [ac_cv_key_alloc_needs_cred],
+ [#include <linux/rwsem.h>
+ #include <linux/key.h>],
+ [struct cred *c = NULL;
+ (void) key_alloc(NULL, NULL, 0, 0, c, 0, 0);],
+ [KEY_ALLOC_NEEDS_CRED],
+ [define if key_alloc takes credentials],
+ [-Werror -Wno-pointer-arith])
+])
+
+
+AC_DEFUN([LINUX_INIT_WORK_HAS_DATA], [
+ AC_CHECK_LINUX_BUILD([whether INIT_WORK has a _data argument],
+ [ac_cv_linux_init_work_has_data],
+[#include <linux/kernel.h>
+#include <linux/workqueue.h>],
+[
+void f(struct work_struct *w) {}
+struct work_struct *w;
+int *i;
+INIT_WORK(w,f,i);],
+ [INIT_WORK_HAS_DATA],
+ [define if INIT_WORK takes a data (3rd) argument],
+ [])
+])
+
+
+AC_DEFUN([LINUX_REGISTER_SYSCTL_TABLE_NOFLAG], [
+ AC_CHECK_LINUX_BUILD([whether register_sysctl_table has an insert_at_head argument],
+ [ac_cv_linux_register_sysctl_table_noflag],
+ [#include <linux/sysctl.h>],
+ [ctl_table *t; register_sysctl_table (t);],
+ [REGISTER_SYSCTL_TABLE_NOFLAG],
+ [define if register_sysctl_table has no insert_at head flag],
+ [])
+])
+
+
+AC_DEFUN([LINUX_FOP_F_FLUSH_TAKES_FL_OWNER_T], [
+ AC_CHECK_LINUX_BUILD([whether file_operations.flush takes a fl_owner_t],
+ [ac_cv_linux_func_f_flush_takes_fl_owner_t],
+ [#include <linux/fs.h>],
[struct inode _inode;
-printf("%d\n", _inode.i_security);],
-ac_cv_linux_fs_struct_inode_has_i_security=yes,
-ac_cv_linux_fs_struct_inode_has_i_security=no)])
-AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_security)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_SB_LIST], [
-AC_MSG_CHECKING(for i_sb_list in struct inode)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_fs_struct_inode_has_i_sb_list,
-[
-AC_TRY_COMPILE(
-[#include <linux/fs.h>],
+struct file _file;
+fl_owner_t id;
+(void)_inode.i_fop->flush(&_file, &id);],
+ [FOP_FLUSH_TAKES_FL_OWNER_T],
+ [define if your fops.flush takes an fl_owner_t argument],
+ [])
+])
+
+
+AC_DEFUN([LINUX_FOP_F_FSYNC_TAKES_DENTRY], [
+ AC_CHECK_LINUX_BUILD([whether file_operations.fsync takes a dentry argument],
+ [ac_cv_linux_func_f_fsync_takes_dentry],
+ [#include <linux/fs.h>],
[struct inode _inode;
-printf("%d\n", _inode.i_sb_list);],
-ac_cv_linux_fs_struct_inode_has_i_sb_list=yes,
-ac_cv_linux_fs_struct_inode_has_i_sb_list=no)])
-AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_sb_list)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_RECALC_SIGPENDING_ARG_TYPE],[
-AC_MSG_CHECKING(for recalc_sigpending arg type)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_func_recalc_sigpending_takes_void,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[recalc_sigpending();],
-ac_cv_linux_func_recalc_sigpending_takes_void=yes,
-ac_cv_linux_func_recalc_sigpending_takes_void=no)])
-AC_MSG_RESULT($ac_cv_linux_func_recalc_sigpending_takes_void)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_PARENT], [
-AC_MSG_CHECKING(for parent in struct task_struct)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_parent,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[struct task_struct _tsk;
-printf("%d\n", _tsk.parent);],
-ac_cv_linux_sched_struct_task_struct_has_parent=yes,
-ac_cv_linux_sched_struct_task_struct_has_parent=no)])
-AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_parent)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_REAL_PARENT], [
-AC_MSG_CHECKING(for real_parent in struct task_struct)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_real_parent,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[struct task_struct _tsk;
-printf("%d\n", _tsk.real_parent);],
-ac_cv_linux_sched_struct_task_struct_has_real_parent=yes,
-ac_cv_linux_sched_struct_task_struct_has_real_parent=no)])
-AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_real_parent)
-CPPFLAGS="$save_CPPFLAGS"])
-
-
-AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIG], [
-AC_MSG_CHECKING(for sig in struct task_struct)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_sig,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[struct task_struct _tsk;
-printf("%d\n", _tsk.sig);],
-ac_cv_linux_sched_struct_task_struct_has_sig=yes,
-ac_cv_linux_sched_struct_task_struct_has_sig=no)])
-AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_sig)
-CPPFLAGS="$save_CPPFLAGS"])
-
-AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGMASK_LOCK], [
-AC_MSG_CHECKING(for sigmask_lock in struct task_struct)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_sigmask_lock,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[struct task_struct _tsk;
-printf("%d\n", _tsk.sigmask_lock);],
-ac_cv_linux_sched_struct_task_struct_has_sigmask_lock=yes,
-ac_cv_linux_sched_struct_task_struct_has_sigmask_lock=no)])
-AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_sigmask_lock)
-CPPFLAGS="$save_CPPFLAGS"])
-
-AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGHAND], [
-AC_MSG_CHECKING(for sighand in struct task_struct)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_sighand,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[struct task_struct _tsk;
-printf("%d\n", _tsk.sighand);],
-ac_cv_linux_sched_struct_task_struct_has_sighand=yes,
-ac_cv_linux_sched_struct_task_struct_has_sighand=no)])
-AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_sighand)
-CPPFLAGS="$save_CPPFLAGS"])
-
-AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_RLIM], [
-AC_MSG_CHECKING(for rlim in struct task_struct)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_rlim,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[struct task_struct _tsk;
-printf("%d\n", _tsk.rlim);],
-ac_cv_linux_sched_struct_task_struct_has_rlim=yes,
-ac_cv_linux_sched_struct_task_struct_has_rlim=no)])
-AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_rlim)
-CPPFLAGS="$save_CPPFLAGS"])
+struct file _file;
+struct dentry _d;
+(void)_inode.i_fop->fsync(&_file, &_d, 0);],
+ [FOP_FSYNC_TAKES_DENTRY],
+ [define if your fops.fsync takes an dentry argument],
+ [])
+])
-AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGNAL_RLIM], [
-AC_MSG_CHECKING(for signal->rlim in struct task_struct)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_signal_rlim,
-[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[struct task_struct _tsk;
-printf("%d\n", _tsk.signal->rlim);],
-ac_cv_linux_sched_struct_task_struct_has_signal_rlim=yes,
-ac_cv_linux_sched_struct_task_struct_has_signal_rlim=no)])
-AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_signal_rlim)
-CPPFLAGS="$save_CPPFLAGS"])
-
-AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_EXIT_STATE], [
-AC_MSG_CHECKING(for exit_state in struct task_struct)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_sched_struct_task_struct_has_exit_state,
+
+int (*fsync) (struct file *, loff_t start, loff_t end, int datasync);
+
+AC_DEFUN([LINUX_FOP_F_FSYNC_TAKES_RANGE], [
+ AC_CHECK_LINUX_BUILD([whether file_operations.fsync takes a range],
+ [ac_cv_linux_func_f_fsync_takes_range],
+ [#include <linux/fs.h>],
+[struct inode _inode;
+struct file _file;
+loff_t start, end;
+(void)_inode.i_fop->fsync(&_file, start, end, 0);],
+ [FOP_FSYNC_TAKES_RANGE],
+ [define if your fops.fsync takes range arguments],
+ [])
+])
+
+
+AC_DEFUN([LINUX_HAVE_KMEM_CACHE_T], [
+ AC_CHECK_LINUX_BUILD([whether kmem_cache_t exists],
+ [ac_cv_linux_have_kmem_cache_t],
+ [#include <linux/slab.h>],
+ [kmem_cache_t *k;],
+ [HAVE_KMEM_CACHE_T],
+ [define if kmem_cache_t exists],
+ [])
+])
+
+
+AC_DEFUN([LINUX_KMEM_CACHE_CREATE_TAKES_DTOR], [
+ AC_CHECK_LINUX_BUILD([whether kmem_cache_create takes a destructor argument],
+ [ac_cv_linux_kmem_cache_create_takes_dtor],
+ [#include <linux/slab.h>],
+ [kmem_cache_create(NULL, 0, 0, 0, NULL, NULL);],
+ [KMEM_CACHE_TAKES_DTOR],
+ [define if kmem_cache_create takes a destructor argument],
+ [])
+])
+
+
+AC_DEFUN([LINUX_KMEM_CACHE_CREATE_CTOR_TAKES_VOID],[
+ AC_CHECK_LINUX_BUILD([whether kmem_cache_create constructor takes a void pointer],
+ [ac_cv_linux_kmem_cache_create_ctor_takes_void],
+ [#include <linux/slab.h>],
+ [void _ctor(void *v) { }; kmem_cache_create(NULL, 0, 0, 0, _ctor);],
+ [KMEM_CACHE_CTOR_TAKES_VOID],
+ [define if kmem_cache_create constructor takes a single void ptr],
+ [-Werror])
+])
+
+
+dnl This function checks not just the existence of the splice functions,
+dnl but also that the signature matches (they gained an extra argument
+dnl around 2.6.17)
+AC_DEFUN([LINUX_FS_STRUCT_FOP_HAS_SPLICE], [
+ AC_CHECK_LINUX_BUILD([for splice_write and splice_read in struct file_operations],
+ [ac_cv_linux_fs_struct_fop_has_splice],
+ [#include <linux/fs.h>],
+ [struct file_operations _fop;
+ _fop.splice_write(NULL, NULL, NULL, 0, 0);
+ _fop.splice_read(NULL, NULL, NULL, 0, 0);],
+ [STRUCT_FILE_OPERATIONS_HAS_SPLICE],
+ [define if struct file_operations has splice functions],
+ [])
+])
+
+
+AC_DEFUN([LINUX_KMEM_CACHE_INIT], [
+ AC_CHECK_LINUX_BUILD([for new kmem_cache init function parameters],
+ [ac_cv_linux_kmem_cache_init],
+ [#include <linux/slab.h>],
+ [extern struct kmem_cache *
+ kmem_cache_create(const char *, size_t, size_t,
+ unsigned long,
+ void (*)(struct kmem_cache *, void *));
+ return;],
+ [KMEM_CACHE_INIT],
+ [define for new kmem_cache init function parameters],
+ [])
+])
+
+
+AC_DEFUN([LINUX_EXPORTS_PROC_ROOT_FS], [
+ AC_CHECK_LINUX_BUILD([if proc_root_fs is defined and exported],
+ [ac_cv_linux_exports_proc_root_fs],
+ [#include <linux/proc_fs.h>],
+ [struct proc_dir_entry *p = proc_root_fs;],
+ [EXPORTED_PROC_ROOT_FS],
+ [define if proc_root_fs is exported],
+ [])
+])
+
+
+AC_DEFUN([LINUX_D_PATH_TAKES_STRUCT_PATH], [
+ AC_CHECK_LINUX_BUILD([if d_path() takes a struct path argument],
+ [ac_cv_linux_d_path_takes_struct_path],
+ [#include <linux/fs.h>],
+ [struct path *p; d_path(p, NULL, 0);],
+ [D_PATH_TAKES_STRUCT_PATH],
+ [define if d_path() takes a struct path argument],
+ [])
+])
+
+
+AC_DEFUN([LINUX_NEW_EXPORT_OPS], [
+ AC_CHECK_LINUX_BUILD([if kernel uses new export ops],
+ [ac_cv_linux_new_export_ops],
+ [#include <linux/exportfs.h>],
+ [struct export_operations _eops;
+ _eops.fh_to_parent(NULL, NULL, 0, 0);],
+ [NEW_EXPORT_OPS],
+ [define if kernel uses new export ops],
+ [])
+])
+
+
+AC_DEFUN([LINUX_POSIX_TEST_LOCK_RETURNS_CONFLICT], [
+ AC_CHECK_LINUX_BUILD([if posix_test_lock returns a struct file_lock],
+ [ac_cv_linux_posix_test_lock_returns_conflict],
+ [#include <linux/fs.h>],
+ [struct file_lock *lock;
+ struct file * file;
+ lock = posix_test_lock(file, lock);],
+ [POSIX_TEST_LOCK_RETURNS_CONFLICT],
+ [define if posix_test_lock returns the conflicting lock],
+ [])
+])
+
+
+AC_DEFUN([LINUX_POSIX_TEST_LOCK_CONFLICT_ARG], [
+ AC_CHECK_LINUX_BUILD([if posix_test_lock takes a conflict argument],
+ [ac_cv_linux_posix_test_lock_conflict_arg],
+ [#include <linux/fs.h>],
+ [struct file_lock *lock;
+ struct file *file;
+ posix_test_lock(file, lock, lock);],
+ [POSIX_TEST_LOCK_CONFLICT_ARG],
+ [define if posix_test_lock takes a conflict argument],
+ [])
+])
+
+
+AC_DEFUN([LINUX_EXPORTS_KEY_TYPE_KEYRING], [
+ AC_CHECK_LINUX_BUILD([for exported key_type_keyring],
+ [ac_cv_linux_exports_key_type_keyring],
[
-AC_TRY_COMPILE(
-[#include <linux/sched.h>],
-[struct task_struct _tsk;
-printf("%d\n", _tsk.exit_state);],
-ac_cv_linux_sched_struct_task_struct_has_exit_state=yes,
-ac_cv_linux_sched_struct_task_struct_has_exit_state=no)])
-AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_exit_state)
-CPPFLAGS="$save_CPPFLAGS"])
+#ifdef HAVE_LINUX_KEY_TYPE_H
+#include <linux/key-type.h>
+#endif
+#include <linux/key.h>
+],
+ [printk("%s", key_type_keyring.name);],
+ [EXPORTED_KEY_TYPE_KEYRING],
+ [define if key_type_keyring is exported],
+ [])
+])
+
+
+AC_DEFUN([LINUX_HAVE_TRY_TO_FREEZE], [
+ AC_CHECK_LINUX_BUILD([for try_to_freeze],
+ [ac_cv_linux_have_try_to_freeze],
+[#include <linux/sched.h>
+#ifdef HAVE_LINUX_FREEZER_H
+#include <linux/freezer.h>
+#endif],
+[#ifdef LINUX_REFRIGERATOR_TAKES_PF_FREEZE
+ try_to_freeze(PF_FREEZE);
+#else
+ try_to_freeze();
+#endif],
+ [HAVE_TRY_TO_FREEZE],
+ [define if your kernel has the try_to_freeze function],
+ [])
+])
+
+
+AC_DEFUN([LINUX_HAVE_DCACHE_LOCK], [
+ AC_CHECK_LINUX_BUILD([for dcache_lock],
+ [ac_cv_linux_have_dcache_lock],
+ [#include <linux/fs.h> ],
+ [printk("%p", &dcache_lock);],
+ [HAVE_DCACHE_LOCK],
+ [define if dcache_lock exists],
+ [])
+])
+
+
+AC_DEFUN([LINUX_D_COUNT_IS_INT], [
+ AC_CHECK_LINUX_BUILD([if dentry->d_count is an int],
+ [ac_cv_linux_d_count_int],
+ [#include <linux/fs.h> ],
+ [struct dentry _d;
+ dget(&_d);
+ _d.d_count = 1;],
+ [D_COUNT_INT],
+ [define if dentry->d_count is an int],
+ [-Werror])
+])
git://git.openafs.org / openafs.git / blobdiff