+AC_DEFUN([LINUX_EXPORTS_TASKLIST_LOCK], [
+ AC_MSG_CHECKING([for exported tasklist_lock])
+ AC_CACHE_VAL([ac_cv_linux_exports_tasklist_lock], [
+ AC_TRY_KBUILD(
+[
+#include <linux/sched.h>],
+[
+extern rwlock_t tasklist_lock __attribute__((weak));
+],
+ ac_cv_linux_exports_tasklist_lock=yes,
+ ac_cv_linux_exports_tasklist_lock=no)])
+ AC_MSG_RESULT($ac_cv_linux_exports_tasklist_lock)])
+
+
+AC_DEFUN([LINUX_CONFIG_H_EXISTS], [
+ AC_MSG_CHECKING([for linux/config.h existance])
+ AC_CACHE_VAL([ac_cv_linux_config_h_exists], [
+ AC_TRY_KBUILD(
+[#include <linux/config.h>],
+[return;],
+ ac_cv_linux_config_h_exists=yes,
+ ac_cv_linux_config_h_exists=no)])
+ AC_MSG_RESULT($ac_cv_linux_config_h_exists)
+ if test "x$ac_cv_linux_config_h_exists" = "xyes"; then
+ AC_DEFINE([CONFIG_H_EXISTS], 1, [define if linux/config.h exists])
+ fi])
+
+
AC_DEFUN([LINUX_COMPLETION_H_EXISTS], [
AC_MSG_CHECKING([for linux/completion.h existance])
AC_CACHE_VAL([ac_cv_linux_completion_h_exists], [
AC_MSG_CHECKING([for exported sys_chdir])
AC_CACHE_VAL([ac_cv_linux_exports_sys_chdir], [
AC_TRY_KBUILD(
-[#include <linux/modversions.h>],
-[#ifndef __ver_sys_chdir
-#error sys_chdir not exported
-#endif],
+[extern asmlinkage long sys_chdir(void) __attribute__((weak));],
+[void *address = &sys_chdir;
+printk("%p\n", address);],
ac_cv_linux_exports_sys_chdir=yes,
ac_cv_linux_exports_sys_chdir=no)])
AC_MSG_RESULT($ac_cv_linux_exports_sys_chdir)])
AC_MSG_CHECKING([for exported sys_close])
AC_CACHE_VAL([ac_cv_linux_exports_sys_close], [
AC_TRY_KBUILD(
-[#include <linux/modversions.h>],
-[#ifndef __ver_sys_close
-#error sys_close not exported
-#endif],
+[extern asmlinkage long sys_close(void) __attribute__((weak));],
+[void *address = &sys_close;
+printk("%p\n", address);],
ac_cv_linux_exports_sys_close=yes,
ac_cv_linux_exports_sys_close=no)])
AC_MSG_RESULT($ac_cv_linux_exports_sys_close)])
+AC_DEFUN([LINUX_EXPORTS_SYS_OPEN], [
+ AC_MSG_CHECKING([for exported sys_open])
+ AC_CACHE_VAL([ac_cv_linux_exports_sys_open], [
+ AC_TRY_KBUILD(
+[extern asmlinkage long sys_open(void) __attribute__((weak));],
+[void *address = &sys_open;
+printk("%p\n", address);],
+ ac_cv_linux_exports_sys_open=yes,
+ ac_cv_linux_exports_sys_open=no)])
+ AC_MSG_RESULT($ac_cv_linux_exports_sys_open)])
+
+
AC_DEFUN([LINUX_EXPORTS_SYS_WAIT4], [
AC_MSG_CHECKING([for exported sys_wait4])
AC_CACHE_VAL([ac_cv_linux_exports_sys_wait4], [
AC_TRY_KBUILD(
-[#include <linux/modversions.h>],
-[#ifndef __ver_sys_wait4
-#error sys_wait4 not exported
-#endif],
+[extern asmlinkage long sys_wait4(void) __attribute__((weak));],
+[void *address = &sys_wait4;
+printk("%p\n", address);],
ac_cv_linux_exports_sys_wait4=yes,
ac_cv_linux_exports_sys_wait4=no)])
AC_MSG_RESULT($ac_cv_linux_exports_sys_wait4)])
+AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_BLKSIZE], [
+ AC_MSG_CHECKING([for i_blksize in struct inode])
+ AC_CACHE_VAL([ac_cv_linux_fs_struct_inode_has_i_blksize], [
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[struct inode _inode;
+printk("%d\n", _inode.i_blksize);],
+ ac_cv_linux_fs_struct_inode_has_i_blksize=yes,
+ ac_cv_linux_fs_struct_inode_has_i_blksize=no)])
+ AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_blksize)])
+
+AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_BLKBITS], [
+ AC_MSG_CHECKING([for i_blkbits in struct inode])
+ AC_CACHE_VAL([ac_cv_linux_fs_struct_inode_has_i_blkbits], [
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[struct inode _inode;
+printk("%d\n", _inode.i_blkbits);],
+ ac_cv_linux_fs_struct_inode_has_i_blkbits=yes,
+ ac_cv_linux_fs_struct_inode_has_i_blkbits=no)])
+ AC_MSG_RESULT($ac_cv_linux_fs_struct_inode_has_i_blkbits)
+ if test "x$ac_cv_linux_fs_struct_inode_has_i_blkbits" = "xyes"; then
+ AC_DEFINE(STRUCT_INODE_HAS_I_BLKBITS, 1, [define if your struct inode has i_blkbits])
+ fi])
+
+
AC_DEFUN([LINUX_FS_STRUCT_INODE_HAS_I_CDEV], [
AC_MSG_CHECKING([for i_cdev in struct inode])
AC_CACHE_VAL([ac_cv_linux_fs_struct_inode_has_i_cdev], [
AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_parent)])
+AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_TGID], [
+ AC_MSG_CHECKING([for tgid in struct task_struct])
+ AC_CACHE_VAL([ac_cv_linux_sched_struct_task_struct_has_tgid], [
+ AC_TRY_KBUILD(
+[#include <linux/sched.h>],
+[struct task_struct _tsk;
+printk("%d\n", _tsk.tgid);],
+ ac_cv_linux_sched_struct_task_struct_has_tgid=yes,
+ ac_cv_linux_sched_struct_task_struct_has_tgid=no)])
+ AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_tgid)])
+
+
AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_REAL_PARENT], [
AC_MSG_CHECKING([for real_parent in struct task_struct])
AC_CACHE_VAL([ac_cv_linux_sched_struct_task_struct_has_real_parent], [
AC_MSG_CHECKING([whether refrigerator takes PF_FREEZE])
AC_CACHE_VAL([ac_cv_linux_func_refrigerator_takes_pf_freeze], [
AC_TRY_KBUILD(
-[#include <linux/sched.h>],
+[#include <linux/sched.h>
+#ifdef FREEZER_H_EXISTS
+#include <linux/freezer.h>
+#endif],
[refrigerator(PF_FREEZE);],
ac_cv_linux_func_refrigerator_takes_pf_freeze=yes,
ac_cv_linux_func_refrigerator_takes_pf_freeze=no)])
ac_cv_linux_get_sb_has_struct_vfsmount=no)])
AC_MSG_RESULT($ac_cv_linux_get_sb_has_struct_vfsmount)])
+AC_DEFUN([LINUX_STATFS_TAKES_DENTRY], [
+ AC_MSG_CHECKING([for dentry in statfs])
+ AC_CACHE_VAL([ac_cv_linux_statfs_takes_dentry], [
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>
+#include <linux/statfs.h>],
+[
+extern int vfs_statfs(struct dentry *, struct kstatfs *);
+],
+ ac_cv_linux_statfs_takes_dentry=yes,
+ ac_cv_linux_statfs_takes_dentry=no)])
+ AC_MSG_RESULT($ac_cv_linux_statfs_takes_dentry)])
+
AC_DEFUN([LINUX_LINUX_KEYRING_SUPPORT], [
AC_MSG_CHECKING([for linux kernel keyring support])
AC_CACHE_VAL([ac_cv_linux_keyring_support], [
AC_TRY_KBUILD(
[#include <linux/rwsem.h>
#include <linux/key.h>
-#include <linux/keyctl.h>
-#include <asm/unistd.h>
-static int errno;
-static inline _syscall2(long, keyctl, int, option, void*, arg2);],
+#include <linux/keyctl.h>],
[#ifdef CONFIG_KEYS
-keyctl(KEYCTL_JOIN_SESSION_KEYRING, NULL);
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],
if test "x$ac_cv_key_alloc_needs_struct_task" = "xyes"; then
AC_DEFINE([KEY_ALLOC_NEEDS_STRUCT_TASK], 1, [define if key_alloc takes a struct task *])
fi])
+
+AC_DEFUN([LINUX_DO_SYNC_READ], [
+ AC_MSG_CHECKING([for linux do_sync_read()])
+ AC_CACHE_VAL([ac_cv_linux_do_sync_read], [
+ save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS -Werror-implicit-function-declaration"
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[do_sync_read(NULL, NULL, 0, NULL);],
+ ac_cv_linux_do_sync_read=yes,
+ ac_cv_linux_do_sync_read=no)
+ CPPFLAGS="$save_CPPFLAGS"])
+ AC_MSG_RESULT($ac_cv_linux_do_sync_read)
+ if test "x$ac_cv_linux_do_sync_read" = "xyes"; then
+ AC_DEFINE([DO_SYNC_READ], 1, [define if your kernel has do_sync_read()])
+ fi])
+
+AC_DEFUN([LINUX_GENERIC_FILE_AIO_READ], [
+ AC_MSG_CHECKING([for linux generic_file_aio_read()])
+ AC_CACHE_VAL([ac_cv_linux_generic_file_aio_read], [
+ save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS -Werror-implicit-function-declaration"
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[generic_file_aio_read(NULL, NULL, 0, 0);],
+ ac_cv_linux_generic_file_aio_read=yes,
+ ac_cv_linux_generic_file_aio_read=no)
+ CPPFLAGS="$save_CPPFLAGS"])
+ AC_MSG_RESULT($ac_cv_linux_generic_file_aio_read)
+ if test "x$ac_cv_linux_generic_file_aio_read" = "xyes"; then
+ AC_DEFINE([GENERIC_FILE_AIO_READ], 1, [define if your kernel has generic_file_aio_read()])
+ fi])
+
+AC_DEFUN([LINUX_FREEZER_H_EXISTS], [
+ AC_MSG_CHECKING([for linux/freezer.h existance])
+ AC_CACHE_VAL([ac_cv_linux_freezer_h_exists], [
+ AC_TRY_KBUILD(
+[#include <linux/freezer.h>],
+[return;],
+ ac_cv_linux_freezer_h_exists=yes,
+ ac_cv_linux_freezer_h_exists=no)])
+ AC_MSG_RESULT($ac_cv_linux_freezer_h_exists)
+ if test "x$ac_cv_linux_freezer_h_exists" = "xyes"; then
+ AC_DEFINE([FREEZER_H_EXISTS], 1, [define if linux/freezer.h exists])
+ fi])
+
+AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_TODO], [
+ AC_MSG_CHECKING([for todo in struct task_struct])
+ AC_CACHE_VAL([ac_cv_linux_sched_struct_task_struct_has_todo], [
+ AC_TRY_KBUILD(
+[#include <linux/sched.h>],
+[struct task_struct _tsk;
+printk("%d\n", _tsk.todo);],
+ ac_cv_linux_sched_struct_task_struct_has_todo=yes,
+ ac_cv_linux_sched_struct_task_struct_has_todo=no)])
+ AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_todo)])
+
+AC_DEFUN([LINUX_INIT_WORK_HAS_DATA], [
+ AC_MSG_CHECKING([whether INIT_WORK has a _data argument])
+ AC_CACHE_VAL([ac_cv_linux_init_work_has_data], [
+ AC_TRY_KBUILD(
+[#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);],
+ ac_cv_linux_init_work_has_data=yes,
+ ac_cv_linux_init_work_has_data=no)])
+ AC_MSG_RESULT($ac_cv_linux_init_work_has_data)])
+
+
+AC_DEFUN([LINUX_FS_STRUCT_FOP_HAS_FLOCK], [
+ AC_MSG_CHECKING([for flock in struct file_operations])
+ AC_CACHE_VAL([ac_cv_linux_fs_struct_fop_has_flock], [
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[struct file_operations _fop;
+_fop.flock(NULL, 0, NULL);],
+ ac_cv_linux_fs_struct_fop_has_flock=yes,
+ ac_cv_linux_fs_struct_fop_has_flock=no)])
+ AC_MSG_RESULT($ac_cv_linux_fs_struct_fop_has_flock)])
+
+AC_DEFUN([LINUX_REGISTER_SYSCTL_TABLE_NOFLAG], [
+ AC_MSG_CHECKING([whether register_sysctl_table has an insert_at_head flag argument])
+ AC_CACHE_VAL([ac_cv_linux_register_sysctl_table_noflag], [
+ AC_TRY_KBUILD(
+[#include <linux/sysctl.h>],
+[ctl_table *t;
+register_sysctl_table (t);],
+ ac_cv_linux_register_sysctl_table_noflag=yes,
+ ac_cv_linux_register_sysctl_table_noflag=no)])
+ AC_MSG_RESULT($ac_cv_linux_register_sysctl_table_noflag)])
+
git://git.openafs.org / openafs.git / blobdiff