+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));
+read_lock(&tasklist_lock);
+],
+ 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$ac_cv_linux_config_h_exists" = "xyes"; then
+ AC_DEFINE([CONFIG_H_EXISTS], 1, [define if linux/config.h exists])
+ fi])
+
+
AC_DEFUN([LINUX_COMPLETION_H_EXISTS], [
AC_MSG_CHECKING([for linux/completion.h existance])
AC_CACHE_VAL([ac_cv_linux_completion_h_exists], [
ac_cv_linux_completion_h_exists=no)])
AC_MSG_RESULT($ac_cv_linux_completion_h_exists)])
+AC_DEFUN([LINUX_EXPORTFS_H_EXISTS], [
+ AC_MSG_CHECKING([for linux/exportfs.h existence])
+ AC_CACHE_VAL([ac_cv_linux_exportfs_h_exists], [
+ AC_TRY_KBUILD(
+[#include <linux/exportfs.h>],
+[return;],
+ ac_cv_linux_exportfs_h_exists=yes,
+ ac_cv_linux_exportfs_h_exists=no)])
+ AC_MSG_RESULT($ac_cv_linux_exportfs_h_exists)])
AC_DEFUN([LINUX_DEFINES_FOR_EACH_PROCESS], [
AC_MSG_CHECKING([for defined for_each_process])
AC_MSG_CHECKING([for exported init_mm])
AC_CACHE_VAL([ac_cv_linux_exports_init_mm], [
AC_TRY_KBUILD(
-[#include <linux/modversions.h>],
-[#ifndef __ver_init_mm
-#error init_mm not exported
-#endif],
+[extern struct mm_struct init_mm;],
+[void *address = &init_mm;
+printk("%p\n", address);],
ac_cv_linux_exports_init_mm=yes,
ac_cv_linux_exports_init_mm=no)])
AC_MSG_RESULT($ac_cv_linux_exports_init_mm)])
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($ac_cv_linux_sched_struct_task_struct_has_tgid)])
+
+
AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_REAL_PARENT], [
AC_MSG_CHECKING([for real_parent in struct task_struct])
AC_CACHE_VAL([ac_cv_linux_sched_struct_task_struct_has_real_parent], [
AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_exit_state)])
+AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_THREAD_INFO], [
+ AC_MSG_CHECKING([for thread_info in struct task_struct])
+ AC_CACHE_VAL([ac_cv_linux_sched_struct_task_struct_has_thread_info], [
+ AC_TRY_KBUILD(
+[#include <linux/sched.h>],
+[struct task_struct _tsk;
+printk("%d\n", _tsk.thread_info);],
+ ac_cv_linux_sched_struct_task_struct_has_thread_info=yes,
+ ac_cv_linux_sched_struct_task_struct_has_thread_info=no)])
+ AC_MSG_RESULT($ac_cv_linux_sched_struct_task_struct_has_thread_info)])
+
+
AC_DEFUN([LINUX_FS_STRUCT_SUPER_HAS_ALLOC_INODE], [
AC_MSG_CHECKING([for alloc_inode in struct super_operations])
AC_CACHE_VAL([ac_cv_linux_fs_struct_super_has_alloc_inode], [
AC_MSG_RESULT($ac_cv_linux_fs_struct_super_has_alloc_inode)])
+AC_DEFUN([LINUX_KERNEL_POSIX_LOCK_FILE_WAIT_ARG], [
+ AC_MSG_CHECKING([for 3rd argument in posix_lock_file found in new kernels])
+ AC_CACHE_VAL([ac_cv_linux_kernel_posix_lock_file_wait_arg], [
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[posix_lock_file(0,0,0);],
+ ac_cv_linux_kernel_posix_lock_file_wait_arg=yes,
+ ac_cv_linux_kernel_posix_lock_file_wait_arg=no)])
+ AC_MSG_RESULT($ac_cv_linux_kernel_posix_lock_file_wait_arg)])
+
+
AC_DEFUN([LINUX_KERNEL_SOCK_CREATE], [
AC_MSG_CHECKING([for 5th argument in sock_create found in some SELinux kernels])
AC_CACHE_VAL([ac_cv_linux_kernel_sock_create_v], [
CPPFLAGS="$save_CPPFLAGS"])
AC_MSG_RESULT($ac_cv_linux_kernel_page_follow_link)])
+AC_DEFUN([LINUX_KERNEL_HLIST_UNHASHED], [
+ AC_MSG_CHECKING([for hlist_unhashed])
+ AC_CACHE_VAL([ac_cv_linux_kernel_hlist_unhashed], [
+ save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS -Werror-implicit-function-declaration"
+ AC_TRY_KBUILD(
+[#include <linux/list.h>],
+[hlist_unhashed(0);],
+ ac_cv_linux_kernel_hlist_unhashed=yes,
+ ac_cv_linux_kernel_hlist_unhashed=no)
+ CPPFLAGS="$save_CPPFLAGS"])
+ AC_MSG_RESULT($ac_cv_linux_kernel_hlist_unhashed)])
AC_DEFUN([LINUX_FS_STRUCT_ADDRESS_SPACE_HAS_GFP_MASK], [
AC_MSG_CHECKING([for gfp_mask in struct address_space])
AC_MSG_CHECKING([whether refrigerator takes PF_FREEZE])
AC_CACHE_VAL([ac_cv_linux_func_refrigerator_takes_pf_freeze], [
AC_TRY_KBUILD(
-[#include <linux/sched.h>],
+[#include <linux/sched.h>
+#ifdef FREEZER_H_EXISTS
+#include <linux/freezer.h>
+#endif],
[refrigerator(PF_FREEZE);],
ac_cv_linux_func_refrigerator_takes_pf_freeze=yes,
ac_cv_linux_func_refrigerator_takes_pf_freeze=no)])
AC_MSG_RESULT($ac_cv_linux_func_i_permission_takes_nameidata)])
+AC_DEFUN([LINUX_IOP_I_PUT_LINK_TAKES_COOKIE], [
+ AC_MSG_CHECKING([whether inode_operations.put_link takes an opaque cookie])
+ AC_CACHE_VAL([ac_cv_linux_func_i_put_link_takes_cookie], [
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>
+#include <linux/namei.h>],
+[struct inode _inode;
+struct dentry _dentry;
+struct nameidata _nameidata;
+void *cookie;
+(void)_inode.i_op->put_link(&_dentry, &_nameidata, cookie);],
+ ac_cv_linux_func_i_put_link_takes_cookie=yes,
+ ac_cv_linux_func_i_put_link_takes_cookie=no)])
+ AC_MSG_RESULT($ac_cv_linux_func_i_put_link_takes_cookie)])
+
+
AC_DEFUN([LINUX_DOP_D_REVALIDATE_TAKES_NAMEIDATA], [
AC_MSG_CHECKING([whether dentry_operations.d_revalidate takes a nameidata])
AC_CACHE_VAL([ac_cv_linux_func_d_revalidate_takes_nameidata], [
ac_cv_linux_get_sb_has_struct_vfsmount=no)])
AC_MSG_RESULT($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($ac_cv_linux_statfs_takes_dentry)])
+
+
+AC_DEFUN([LINUX_KEY_TYPE_H_EXISTS], [
+ AC_MSG_CHECKING([for linux/key-type.h existance])
+ AC_CACHE_VAL([ac_cv_linux_key_type_h_exists], [
+ AC_TRY_KBUILD(
+[#include <linux/key-type.h>],
+[return;],
+ ac_cv_linux_key_type_h_exists=yes,
+ ac_cv_linux_key_type_h_exists=no)])
+ AC_MSG_RESULT($ac_cv_linux_key_type_h_exists)
+ if test "x$ac_cv_linux_key_type_h_exists" = "xyes"; then
+ AC_DEFINE([KEY_TYPE_H_EXISTS], 1, [define if linux/key-type.h exists])
+ fi])
+
AC_DEFUN([LINUX_LINUX_KEYRING_SUPPORT], [
AC_MSG_CHECKING([for linux kernel keyring support])
AC_CACHE_VAL([ac_cv_linux_keyring_support], [
AC_TRY_KBUILD(
[#include <linux/rwsem.h>
+#ifdef KEY_TYPE_H_EXISTS
+#include <linux/key-type.h>
+#endif
#include <linux/key.h>
-#include <linux/keyctl.h>
-#include <asm/unistd.h>
-static int errno;
-static inline _syscall2(long, keyctl, int, option, void*, arg2);],
+#include <linux/keyctl.h>],
[#ifdef CONFIG_KEYS
-keyctl(KEYCTL_JOIN_SESSION_KEYRING, NULL);
request_key(NULL, NULL, NULL);
-#if !defined(KEY_POS_VIEW) || !defined(KEY_POS_SEARCH)
-#error "Your linux/key.h does not contain KEY_POS_VIEW or KEY_POS_SEARCH"
+#if !defined(KEY_POS_VIEW) || !defined(KEY_POS_SEARCH) || !defined(KEY_POS_SETATTR)
+#error "Your linux/key.h does not contain KEY_POS_VIEW or KEY_POS_SEARCH or KEY_POS_SETATTR"
#endif
#else
#error rebuild your kernel with CONFIG_KEYS
if test "x$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)])
+
+AC_DEFUN([LINUX_FOP_F_FLUSH_TAKES_FL_OWNER_T], [
+ AC_MSG_CHECKING([whether file_operations.flush takes a fl_owner_t])
+ AC_CACHE_VAL([ac_cv_linux_func_f_flush_takes_fl_owner_t], [
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[struct inode _inode;
+struct file _file;
+fl_owner_t id;
+(void)_inode.i_fop->flush(&_file, &id);],
+ ac_cv_linux_func_f_flush_takes_fl_owner_t=yes,
+ ac_cv_linux_func_f_flush_takes_fl_owner_t=no)])
+ AC_MSG_RESULT($ac_cv_linux_func_f_flush_takes_fl_owner_t)])
+
+AC_DEFUN([LINUX_HAVE_KMEM_CACHE_T], [
+ AC_MSG_CHECKING([whether kmem_cache_t exists])
+ AC_CACHE_VAL([ac_cv_linux_have_kmem_cache_t], [
+ AC_TRY_KBUILD(
+[#include <linux/slab.h>],
+[kmem_cache_t *k;],
+ ac_cv_linux_have_kmem_cache_t=yes,
+ ac_cv_linux_have_kmem_cache_t=no)])
+ AC_MSG_RESULT($ac_cv_linux_have_kmem_cache_t)])
+
+AC_DEFUN([LINUX_KMEM_CACHE_CREATE_TAKES_DTOR], [
+ AC_MSG_CHECKING([whether kmem_cache_create takes a destructor argument])
+ AC_CACHE_VAL([ac_cv_linux_kmem_cache_create_takes_dtor], [
+ AC_TRY_KBUILD(
+[#include <linux/slab.h>],
+[kmem_cache_create(NULL, 0, 0, 0, NULL, NULL);],
+ ac_cv_linux_kmem_cache_create_takes_dtor=yes,
+ ac_cv_linux_kmem_cache_create_takes_dtor=no)])
+ AC_MSG_RESULT($ac_cv_linux_kmem_cache_create_takes_dtor)])
+
+AC_DEFUN([LINUX_FS_STRUCT_FOP_HAS_SENDFILE], [
+ AC_MSG_CHECKING([for sendfile in struct file_operations])
+ AC_CACHE_VAL([ac_cv_linux_fs_struct_fop_has_sendfile], [
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[struct file_operations _fop;
+_fop.sendfile(NULL, NULL, 0, 0, NULL);],
+ ac_cv_linux_fs_struct_fop_has_sendfile=yes,
+ ac_cv_linux_fs_struct_fop_has_sendfile=no)])
+ AC_MSG_RESULT($ac_cv_linux_fs_struct_fop_has_sendfile)])
+
+AC_DEFUN([LINUX_HAVE_SVC_ADDR_IN], [
+ AC_MSG_CHECKING([whether svc_addr_in exists])
+ AC_CACHE_VAL([ac_cv_linux_have_svc_addr_in], [
+ AC_TRY_KBUILD(
+[#include <linux/sunrpc/svc.h>],
+[svc_addr_in(NULL);],
+ ac_cv_linux_have_svc_addr_in=yes,
+ ac_cv_linux_have_svc_addr_in=no)])
+ AC_MSG_RESULT($ac_cv_linux_have_svc_addr_in)])
+
+AC_DEFUN([LINUX_FS_STRUCT_FOP_HAS_SPLICE], [
+ AC_MSG_CHECKING([for splice_write and splice_read in struct file_operations])
+ AC_CACHE_VAL([ac_cv_linux_fs_struct_fop_has_splice], [
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[struct file_operations _fop;
+_fop.splice_write(NULL, NULL, NULL, 0, 0);
+_fop.splice_read(NULL, NULL, NULL, 0, 0);],
+ ac_cv_linux_fs_struct_fop_has_splice=yes,
+ ac_cv_linux_fs_struct_fop_has_splice=no)])
+ AC_MSG_RESULT($ac_cv_linux_fs_struct_fop_has_splice)])
+
+AC_DEFUN([LINUX_HAVE_CURRENT_KERNEL_TIME], [
+ AC_MSG_CHECKING([for current_kernel_time()])
+ AC_CACHE_VAL([ac_cv_linux_have_current_kernel_time], [
+ AC_TRY_KBUILD(
+[#include <linux/time.h>],
+[struct timespec s = current_kernel_time();],
+ ac_cv_linux_have_current_kernel_time=yes,
+ ac_cv_linux_have_current_kernel_time=no)])
+ AC_MSG_RESULT($ac_cv_linux_have_current_kernel_time)])
+
+AC_DEFUN([LINUX_KMEM_CACHE_INIT], [
+ AC_MSG_CHECKING([for new kmem_cache init function parameters])
+ AC_CACHE_VAL([ac_cv_linux_kmem_cache_init], [
+ AC_TRY_KBUILD(
+[#include <linux/slab.h>],
+[extern struct kmem_cache *kmem_cache_create(const char *, size_t, size_t,
+ unsigned long,
+ void (*)(struct kmem_cache *, void *));
+return;],
+ ac_cv_linux_kmem_cache_init=yes,
+ ac_cv_linux_kmem_cache_init=no)])
+ AC_MSG_RESULT($ac_cv_linux_kmem_cache_init)])
+
+AC_DEFUN([LINUX_SYSCTL_TABLE_CHECKING], [
+ AC_MSG_CHECKING([for sysctl table checking])
+ AC_CACHE_VAL([ac_cv_linux_sysctl_table_checking], [
+ AC_TRY_KBUILD(
+[#include <linux/sysctl.h>],
+[ extern int sysctl_check_table(int) __attribute__((weak));
+sysctl_check_table(NULL);],
+ ac_cv_linux_sysctl_table_checking=no,
+ ac_cv_linux_sysctl_table_checking=yes)])
+AC_MSG_RESULT($ac_cv_linux_sysctl_table_checking)])
+
+AC_DEFUN([LINUX_HAVE_IGET], [
+ AC_MSG_CHECKING([for linux iget()])
+ AC_CACHE_VAL([ac_cv_linux_have_iget], [
+ save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS -Werror-implicit-function-declaration"
+ AC_TRY_KBUILD(
+[#include <linux/fs.h>],
+[iget(NULL, NULL);],
+ ac_cv_linux_have_iget=yes,
+ ac_cv_linux_have_iget=no)
+ CPPFLAGS="$save_CPPFLAGS"])
+ AC_MSG_RESULT($ac_cv_linux_have_iget)])
+
+AC_DEFUN([LINUX_FS_STRUCT_NAMEIDATA_HAS_PATH], [
+ AC_MSG_CHECKING([for path in struct nameidata])
+ AC_CACHE_VAL([ac_cv_linux_struct_nameidata_has_path], [
+ AC_TRY_KBUILD(
+[#include <linux/namei.h>],
+[struct nameidata _nd;
+printk("%x\n", _nd.path);],
+ ac_cv_linux_struct_nameidata_has_path=yes,
+ ac_cv_linux_struct_nameidata_has_path=no)])
+ AC_MSG_RESULT($ac_cv_linux_struct_nameidata_has_path)])
+
+AC_DEFUN([LINUX_EXPORTS_RCU_READ_LOCK], [
+ AC_MSG_CHECKING([if rcu_read_lock is usable])
+ AC_CACHE_VAL([ac_cv_linux_exports_rcu_read_lock], [
+ AC_TRY_KBUILD(
+[#include <linux/rcupdate.h>],
+[rcu_read_lock();],
+ ac_cv_linux_exports_rcu_read_lock=yes,
+ ac_cv_linux_exports_rcu_read_lock=no)])
+ AC_MSG_RESULT($ac_cv_linux_exports_rcu_read_lock)
+ if test "x$ac_cv_linux_exports_rcu_read_lock" = "xyes"; then
+ AC_DEFINE([EXPORTED_RCU_READ_LOCK], 1, [define if rcu_read_lock() is usable])
+ fi])
+
+AC_DEFUN([LINUX_EXPORTS_FIND_TASK_BY_PID], [
+ AC_MSG_CHECKING([if find_task_by_pid is usable])
+ AC_CACHE_VAL([ac_cv_linux_exports_find_task_by_pid], [
+ AC_TRY_KBUILD(
+[#include <linux/sched.h>],
+[pid_t p;
+find_task_by_pid(p);],
+ ac_cv_linux_exports_find_task_by_pid=yes,
+ ac_cv_linux_exports_find_task_by_pid=no)])
+ AC_MSG_RESULT($ac_cv_linux_exports_find_task_by_pid)
+ if test "x$ac_cv_linux_exports_find_task_by_pid" = "xyes"; then
+ AC_DEFINE([EXPORTED_FIND_TASK_BY_PID], 1, [define if find_task_by_pid() is usable])
+ fi])
+
+AC_DEFUN([LINUX_EXPORTS_PROC_ROOT_FS], [
+ AC_MSG_CHECKING([if proc_root_fs is defined and exported])
+ AC_CACHE_VAL([ac_cv_linux_exports_proc_root_fs], [
+ AC_TRY_KBUILD(
+[#include <linux/proc_fs.h>],
+[struct proc_dir_entry *p = proc_root_fs;],
+ ac_cv_linux_exports_proc_root_fs=yes,
+ ac_cv_linux_exports_proc_root_fs=no)])
+ AC_MSG_RESULT($ac_cv_linux_exports_proc_root_fs)
+ if test "x$ac_cv_linux_exports_proc_root_fs" = "xyes"; then
+ AC_DEFINE([EXPORTED_PROC_ROOT_FS], 1, [define if proc_root_fs is exported])
+ fi])
+
git://git.openafs.org / openafs.git / blobdiff