2 AC_DEFUN([LINUX_AIO_NONVECTOR],
3 [AC_CHECK_LINUX_BUILD([for non-vectorized aio kernel functions],
4 [ac_cv_linux_aio_nonvector],
5 [#include <linux/fs.h>],
7 generic_file_aio_read(struct kiocb *, char __user *,
9 [LINUX_HAS_NONVECTOR_AIO],
10 [define if kernel functions like generic_file_aio_read use
15 AC_DEFUN([LINUX_EXPORTS_TASKLIST_LOCK], [
16 AC_CHECK_LINUX_BUILD([for exported tasklist_lock],
17 [ac_cv_linux_exports_tasklist_lock],
18 [#include <linux/sched.h>],
20 extern rwlock_t tasklist_lock __attribute__((weak));
21 read_lock(&tasklist_lock);
23 [EXPORTED_TASKLIST_LOCK],
24 [define if tasklist_lock exported],
28 AC_DEFUN([LINUX_COMPLETION_H_EXISTS], [
29 AC_CHECK_LINUX_BUILD([for linux/completion.h],
30 [ac_cv_linux_completion_h_exists],
31 [#include <linux/version.h>
32 #include <linux/completion.h>],
33 [struct completion _c;
34 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,8)
37 [HAVE_LINUX_COMPLETION_H]
38 [Define if your kernel has a usable linux/completion.h],
43 AC_DEFUN([LINUX_EXPORTS_INIT_MM], [
44 AC_CHECK_LINUX_BUILD([for exported init_mm],
45 [ac_cv_linux_exports_init_mm],
46 [extern struct mm_struct init_mm;],
47 [void *address = &init_mm; printk("%p\n", address);],
49 [define if your kernel exports init_mm],
54 AC_DEFUN([LINUX_EXPORTS_KALLSYMS_ADDRESS], [
55 AC_CHECK_LINUX_BUILD([for exported kallsyms_address_to_symbol],
56 [ac_cv_linux_exports_kallsyms_address],
57 [#include <linux/modversions.h>],
58 [#ifndef __ver_kallsyms_address_to_symbol
59 #error kallsyms_address_to_symbol not exported
61 [EXPORTED_KALLSYMS_ADDRESS],
62 [define if your linux kernel exports kallsyms address],
67 AC_DEFUN([LINUX_EXPORTS_KALLSYMS_SYMBOL], [
68 AC_CHECK_LINUX_BUILD([for exported kallsyms_symbol_to_address],
69 [ac_cv_linux_exports_kallsyms_symbol],
70 [#include <linux/modversions.h>],
71 [#ifndef __ver_kallsyms_symbol_to_address
72 #error kallsyms_symbol_to_address not exported
74 [EXPORTED_KALLSYMS_SYMBOL],
75 [define if your linux kernel exports kallsyms],
80 AC_DEFUN([LINUX_EXPORTS_SYS_CALL_TABLE], [
81 AC_CHECK_LINUX_BUILD([for exported sys_call_table],
82 [ac_cv_linux_exports_sys_call_table],
83 [#include <linux/modversions.h>],
84 [#ifndef __ver_sys_call_table
85 #error sys_call_table not exported
87 [EXPORTED_SYS_CALL_TABLE],
88 [define if your linux kernel exports sys_call_table],
93 AC_DEFUN([LINUX_EXPORTS_IA32_SYS_CALL_TABLE], [
94 AC_CHECK_LINUX_BUILD([for exported ia32_sys_call_table],
95 [ac_cv_linux_exports_ia32_sys_call_table],
96 [#include <linux/modversions.h>],
97 [#ifndef __ver_ia32_sys_call_table
98 #error ia32_sys_call_table not exported
100 [EXPORTED_IA32_SYS_CALL_TABLE],
101 [define if your linux kernel exports ia32_sys_call_table],
106 AC_DEFUN([LINUX_EXPORTS_SYS_CHDIR], [
107 AC_CHECK_LINUX_BUILD([for exported sys_chdir],
108 [ac_cv_linux_exports_sys_chdir],
109 [extern asmlinkage long sys_chdir(void) __attribute__((weak));],
110 [void *address = &sys_chdir; printk("%p\n", address);],
111 [EXPORTED_SYS_CHDIR],
112 [define if your linux kernel exports sys_chdir],
117 AC_DEFUN([LINUX_EXPORTS_SYS_OPEN], [
118 AC_CHECK_LINUX_BUILD([for exported sys_open],
119 [ac_cv_linux_exports_sys_open],
120 [extern asmlinkage long sys_open(void) __attribute__((weak));],
121 [void *address = &sys_open; printk("%p\n", address);],
123 [define if your linux kernel exports sys_open],
128 AC_DEFUN([LINUX_RECALC_SIGPENDING_ARG_TYPE], [
129 AC_CHECK_LINUX_BUILD([for recalc_sigpending arg type],
130 [ac_cv_linux_func_recalc_sigpending_takes_void],
131 [#include <linux/sched.h>],
132 [recalc_sigpending();],
133 [RECALC_SIGPENDING_TAKES_VOID],
134 [define if your recalc_sigpending takes void],
139 AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGNAL_RLIM], [
140 AC_CHECK_LINUX_BUILD([for signal->rlim in struct task_struct],
141 [ac_cv_linux_sched_struct_task_struct_has_signal_rlim],
142 [#include <linux/sched.h>],
143 [struct task_struct _tsk; printk("%d\n", _tsk.signal->rlim);],
144 [STRUCT_TASK_STRUCT_HAS_SIGNAL_RLIM],
145 [define if your struct task_struct has signal->rlim],
150 AC_DEFUN([LINUX_KERNEL_POSIX_LOCK_FILE_WAIT_ARG], [
151 AC_CHECK_LINUX_BUILD([for 3rd argument in posix_lock_file found in new kernels],
152 [ac_cv_linux_kernel_posix_lock_file_wait_arg],
153 [#include <linux/fs.h>],
154 [posix_lock_file(0,0,0);],
155 [POSIX_LOCK_FILE_WAIT_ARG],
156 [define if your kernel uses 3 arguments for posix_lock_file],
160 AC_DEFUN([LINUX_KERNEL_SOCK_CREATE], [
161 AC_CHECK_LINUX_BUILD([for 5th argument in sock_create found in some SELinux kernels],
162 [ac_cv_linux_kernel_sock_create_v],
163 [#include <linux/net.h>],
164 [sock_create(0,0,0,0,0);],
165 [LINUX_KERNEL_SOCK_CREATE_V],
166 [define if your linux kernel uses 5 arguments for sock_create],
171 AC_DEFUN([LINUX_INODE_SETATTR_RETURN_TYPE], [
172 AC_CHECK_LINUX_BUILD([for inode_setattr return type],
173 [ac_cv_linux_func_inode_setattr_returns_int],
174 [#include <linux/fs.h>],
175 [struct inode _inode;
178 i = inode_setattr(&_inode, &_iattr);],
179 [INODE_SETATTR_NOT_VOID],
180 [define if your setattr return return non-void],
186 AC_DEFUN([LINUX_AOP_WRITEBACK_CONTROL], [
187 AC_CHECK_LINUX_BUILD([whether aop.writepage takes a writeback_control],
188 [ac_cv_linux_func_a_writepage_takes_writeback_control],
189 [#include <linux/fs.h>
190 #include <linux/mm.h>
191 #include <linux/writeback.h>],
192 [struct address_space_operations _aops;
194 struct writeback_control _writeback_control;
195 (void)_aops.writepage(&_page, &_writeback_control);],
196 [AOP_WRITEPAGE_TAKES_WRITEBACK_CONTROL],
197 [define if aops.writepage takes a struct writeback_control],
202 AC_DEFUN([LINUX_REFRIGERATOR], [
203 AC_CHECK_LINUX_BUILD([whether refrigerator takes PF_FREEZE],
204 [ac_cv_linux_func_refrigerator_takes_pf_freeze],
205 [#include <linux/sched.h>
206 #ifdef HAVE_LINUX_FREEZER_H
207 #include <linux/freezer.h>
209 [refrigerator(PF_FREEZE);],
210 [LINUX_REFRIGERATOR_TAKES_PF_FREEZE],
211 [define if your refrigerator takes PF_FREEZE],
216 AC_DEFUN([LINUX_IOP_I_CREATE_TAKES_NAMEIDATA], [
217 AC_CHECK_LINUX_BUILD([whether inode_operations.create takes a nameidata],
218 [ac_cv_linux_func_i_create_takes_nameidata],
219 [#include <linux/fs.h>
220 #include <linux/namei.h>],
221 [struct inode _inode;
222 struct dentry _dentry;
223 struct nameidata _nameidata;
224 (void)_inode.i_op->create(&_inode, &_dentry, 0, &_nameidata);],
226 [IOP_CREATE_TAKES_NAMEIDATA],
227 [define if your iops.create takes a nameidata argument],
232 AC_DEFUN([LINUX_IOP_I_LOOKUP_TAKES_NAMEIDATA], [
233 AC_CHECK_LINUX_BUILD([whether inode_operations.lookup takes a nameidata],
234 [ac_cv_linux_func_i_lookup_takes_nameidata],
235 [#include <linux/fs.h>
236 #include <linux/namei.h>],
237 [struct inode _inode;
238 struct dentry _dentry;
239 struct nameidata _nameidata;
240 (void)_inode.i_op->lookup(&_inode, &_dentry, &_nameidata);],
241 [IOP_LOOKUP_TAKES_NAMEIDATA],
242 [define if your iops.lookup takes a nameidata argument],
247 AC_DEFUN([LINUX_IOP_I_PERMISSION_TAKES_NAMEIDATA], [
248 AC_CHECK_LINUX_BUILD([whether inode_operations.permission takes a nameidata],
249 [ac_cv_linux_func_i_permission_takes_nameidata],
250 [#include <linux/fs.h>
251 #include <linux/namei.h>],
252 [struct inode _inode;
253 struct nameidata _nameidata;
254 (void)_inode.i_op->permission(&_inode, 0, &_nameidata);],
255 [IOP_PERMISSION_TAKES_NAMEIDATA],
256 [define if your iops.permission takes a nameidata argument],
261 AC_DEFUN([LINUX_IOP_I_PERMISSION_TAKES_FLAGS], [
262 AC_CHECK_LINUX_BUILD([whether inode_operations.permission takes flags],
263 [ac_cv_linux_func_i_permission_takes_flags],
264 [#include <linux/fs.h>],
265 [struct inode _inode = {0};
266 unsigned int flags = 0;
267 (void)_inode.i_op->permission(&_inode, 0, flags);],
268 [IOP_PERMISSION_TAKES_FLAGS],
269 [define if your iops.permission takes a flags argument],
274 AC_DEFUN([LINUX_IOP_I_PUT_LINK_TAKES_COOKIE], [
275 AC_CHECK_LINUX_BUILD([whether inode_operations.put_link takes an opaque cookie],
276 [ac_cv_linux_func_i_put_link_takes_cookie],
277 [#include <linux/fs.h>
278 #include <linux/namei.h>],
279 [struct inode _inode;
280 struct dentry _dentry;
281 struct nameidata _nameidata;
283 (void)_inode.i_op->put_link(&_dentry, &_nameidata, cookie);],
284 [IOP_PUT_LINK_TAKES_COOKIE],
285 [define if your iops.put_link takes a cookie],
290 AC_DEFUN([LINUX_DOP_D_REVALIDATE_TAKES_NAMEIDATA], [
291 AC_CHECK_LINUX_BUILD([whether dentry_operations.d_revalidate takes a nameidata],
292 [ac_cv_linux_func_d_revalidate_takes_nameidata],
293 [#include <linux/fs.h>
294 #include <linux/namei.h>],
295 [struct dentry _dentry;
296 struct nameidata _nameidata;
297 (void)_dentry.d_op->d_revalidate(&_dentry, &_nameidata);],
298 [DOP_REVALIDATE_TAKES_NAMEIDATA],
299 [define if your dops.d_revalidate takes a nameidata argument],
304 AC_DEFUN([LINUX_GET_SB_HAS_STRUCT_VFSMOUNT], [
305 AC_CHECK_LINUX_BUILD([for struct vfsmount * in get_sb_nodev()],
306 [ac_cv_linux_get_sb_has_struct_vfsmount],
307 [#include <linux/fs.h>],
308 [get_sb_nodev(0,0,0,0,0);],
309 [GET_SB_HAS_STRUCT_VFSMOUNT],
310 [define if your get_sb_nodev needs a struct vfsmount argument],
315 AC_DEFUN([LINUX_STATFS_TAKES_DENTRY], [
316 AC_CHECK_LINUX_BUILD([for dentry in statfs],
317 [ac_cv_linux_statfs_takes_dentry],
318 [#include <linux/fs.h>
319 #include <linux/statfs.h>],
320 [extern int simple_statfs(struct dentry *, struct kstatfs *);],
321 [STATFS_TAKES_DENTRY],
322 [define if your statfs takes a dentry argument],
327 AC_DEFUN([LINUX_LINUX_KEYRING_SUPPORT], [
328 AC_CHECK_LINUX_BUILD([for linux kernel keyring support],
329 [ac_cv_linux_keyring_support],
330 [#include <linux/rwsem.h>
331 #ifdef HAVE_LINUX_KEY_TYPE_H
332 #include <linux/key-type.h>
334 #include <linux/key.h>
335 #include <linux/keyctl.h>],
337 request_key(NULL, NULL, NULL);
338 #if !defined(KEY_POS_VIEW) || !defined(KEY_POS_SEARCH) || !defined(KEY_POS_SETATTR)
339 #error "Your linux/key.h does not contain KEY_POS_VIEW or KEY_POS_SEARCH or KEY_POS_SETATTR"
342 #error rebuild your kernel with CONFIG_KEYS
344 [LINUX_KEYRING_SUPPORT],
345 [define if your kernel has keyring support],
350 AC_DEFUN([LINUX_KEY_ALLOC_NEEDS_STRUCT_TASK], [
351 AC_CHECK_LINUX_BUILD([if key_alloc() takes a struct task *],
352 [ac_cv_key_alloc_needs_struct_task],
353 [#include <linux/rwsem.h>
354 #include <linux/key.h> ],
355 [struct task_struct *t=NULL;
356 (void) key_alloc(NULL, NULL, 0, 0, t, 0, 0);],
357 [KEY_ALLOC_NEEDS_STRUCT_TASK],
358 [define if key_alloc takes a struct task *],
359 [-Werror -Wno-pointer-arith])
363 AC_DEFUN([LINUX_KEY_ALLOC_NEEDS_CRED], [
364 AC_CHECK_LINUX_BUILD([if key_alloc() takes credentials],
365 [ac_cv_key_alloc_needs_cred],
366 [#include <linux/rwsem.h>
367 #include <linux/key.h>],
368 [struct cred *c = NULL;
369 (void) key_alloc(NULL, NULL, 0, 0, c, 0, 0);],
370 [KEY_ALLOC_NEEDS_CRED],
371 [define if key_alloc takes credentials],
372 [-Werror -Wno-pointer-arith])
376 AC_DEFUN([LINUX_INIT_WORK_HAS_DATA], [
377 AC_CHECK_LINUX_BUILD([whether INIT_WORK has a _data argument],
378 [ac_cv_linux_init_work_has_data],
379 [#include <linux/kernel.h>
380 #include <linux/workqueue.h>],
382 void f(struct work_struct *w) {}
383 struct work_struct *w;
386 [INIT_WORK_HAS_DATA],
387 [define if INIT_WORK takes a data (3rd) argument],
392 AC_DEFUN([LINUX_REGISTER_SYSCTL_TABLE_NOFLAG], [
393 AC_CHECK_LINUX_BUILD([whether register_sysctl_table has an insert_at_head argument],
394 [ac_cv_linux_register_sysctl_table_noflag],
395 [#include <linux/sysctl.h>],
396 [ctl_table *t; register_sysctl_table (t);],
397 [REGISTER_SYSCTL_TABLE_NOFLAG],
398 [define if register_sysctl_table has no insert_at head flag],
403 AC_DEFUN([LINUX_FOP_F_FLUSH_TAKES_FL_OWNER_T], [
404 AC_CHECK_LINUX_BUILD([whether file_operations.flush takes a fl_owner_t],
405 [ac_cv_linux_func_f_flush_takes_fl_owner_t],
406 [#include <linux/fs.h>],
407 [struct inode _inode;
410 (void)_inode.i_fop->flush(&_file, &id);],
411 [FOP_FLUSH_TAKES_FL_OWNER_T],
412 [define if your fops.flush takes an fl_owner_t argument],
417 AC_DEFUN([LINUX_FOP_F_FSYNC_TAKES_DENTRY], [
418 AC_CHECK_LINUX_BUILD([whether file_operations.fsync takes a dentry argument],
419 [ac_cv_linux_func_f_fsync_takes_dentry],
420 [#include <linux/fs.h>],
421 [struct inode _inode;
424 (void)_inode.i_fop->fsync(&_file, &_d, 0);],
425 [FOP_FSYNC_TAKES_DENTRY],
426 [define if your fops.fsync takes an dentry argument],
431 int (*fsync) (struct file *, loff_t start, loff_t end, int datasync);
433 AC_DEFUN([LINUX_FOP_F_FSYNC_TAKES_RANGE], [
434 AC_CHECK_LINUX_BUILD([whether file_operations.fsync takes a range],
435 [ac_cv_linux_func_f_fsync_takes_range],
436 [#include <linux/fs.h>],
437 [struct inode _inode;
440 (void)_inode.i_fop->fsync(&_file, start, end, 0);],
441 [FOP_FSYNC_TAKES_RANGE],
442 [define if your fops.fsync takes range arguments],
447 AC_DEFUN([LINUX_HAVE_KMEM_CACHE_T], [
448 AC_CHECK_LINUX_BUILD([whether kmem_cache_t exists],
449 [ac_cv_linux_have_kmem_cache_t],
450 [#include <linux/slab.h>],
453 [define if kmem_cache_t exists],
458 AC_DEFUN([LINUX_KMEM_CACHE_CREATE_TAKES_DTOR], [
459 AC_CHECK_LINUX_BUILD([whether kmem_cache_create takes a destructor argument],
460 [ac_cv_linux_kmem_cache_create_takes_dtor],
461 [#include <linux/slab.h>],
462 [kmem_cache_create(NULL, 0, 0, 0, NULL, NULL);],
463 [KMEM_CACHE_TAKES_DTOR],
464 [define if kmem_cache_create takes a destructor argument],
469 AC_DEFUN([LINUX_KMEM_CACHE_CREATE_CTOR_TAKES_VOID],[
470 AC_CHECK_LINUX_BUILD([whether kmem_cache_create constructor takes a void pointer],
471 [ac_cv_linux_kmem_cache_create_ctor_takes_void],
472 [#include <linux/slab.h>],
473 [void _ctor(void *v) { }; kmem_cache_create(NULL, 0, 0, 0, _ctor);],
474 [KMEM_CACHE_CTOR_TAKES_VOID],
475 [define if kmem_cache_create constructor takes a single void ptr],
480 dnl This function checks not just the existence of the splice functions,
481 dnl but also that the signature matches (they gained an extra argument
483 AC_DEFUN([LINUX_FS_STRUCT_FOP_HAS_SPLICE], [
484 AC_CHECK_LINUX_BUILD([for splice_write and splice_read in struct file_operations],
485 [ac_cv_linux_fs_struct_fop_has_splice],
486 [#include <linux/fs.h>],
487 [struct file_operations _fop;
488 _fop.splice_write(NULL, NULL, NULL, 0, 0);
489 _fop.splice_read(NULL, NULL, NULL, 0, 0);],
490 [STRUCT_FILE_OPERATIONS_HAS_SPLICE],
491 [define if struct file_operations has splice functions],
496 AC_DEFUN([LINUX_KMEM_CACHE_INIT], [
497 AC_CHECK_LINUX_BUILD([for new kmem_cache init function parameters],
498 [ac_cv_linux_kmem_cache_init],
499 [#include <linux/slab.h>],
500 [extern struct kmem_cache *
501 kmem_cache_create(const char *, size_t, size_t,
503 void (*)(struct kmem_cache *, void *));
506 [define for new kmem_cache init function parameters],
511 AC_DEFUN([LINUX_EXPORTS_PROC_ROOT_FS], [
512 AC_CHECK_LINUX_BUILD([if proc_root_fs is defined and exported],
513 [ac_cv_linux_exports_proc_root_fs],
514 [#include <linux/proc_fs.h>],
515 [struct proc_dir_entry *p = proc_root_fs;],
516 [EXPORTED_PROC_ROOT_FS],
517 [define if proc_root_fs is exported],
522 AC_DEFUN([LINUX_D_PATH_TAKES_STRUCT_PATH], [
523 AC_CHECK_LINUX_BUILD([if d_path() takes a struct path argument],
524 [ac_cv_linux_d_path_takes_struct_path],
525 [#include <linux/fs.h>],
526 [struct path *p; d_path(p, NULL, 0);],
527 [D_PATH_TAKES_STRUCT_PATH],
528 [define if d_path() takes a struct path argument],
533 AC_DEFUN([LINUX_NEW_EXPORT_OPS], [
534 AC_CHECK_LINUX_BUILD([if kernel uses new export ops],
535 [ac_cv_linux_new_export_ops],
536 [#include <linux/exportfs.h>],
537 [struct export_operations _eops;
538 _eops.fh_to_parent(NULL, NULL, 0, 0);],
540 [define if kernel uses new export ops],
545 AC_DEFUN([LINUX_POSIX_TEST_LOCK_RETURNS_CONFLICT], [
546 AC_CHECK_LINUX_BUILD([if posix_test_lock returns a struct file_lock],
547 [ac_cv_linux_posix_test_lock_returns_conflict],
548 [#include <linux/fs.h>],
549 [struct file_lock *lock;
551 lock = posix_test_lock(file, lock);],
552 [POSIX_TEST_LOCK_RETURNS_CONFLICT],
553 [define if posix_test_lock returns the conflicting lock],
558 AC_DEFUN([LINUX_POSIX_TEST_LOCK_CONFLICT_ARG], [
559 AC_CHECK_LINUX_BUILD([if posix_test_lock takes a conflict argument],
560 [ac_cv_linux_posix_test_lock_conflict_arg],
561 [#include <linux/fs.h>],
562 [struct file_lock *lock;
564 posix_test_lock(file, lock, lock);],
565 [POSIX_TEST_LOCK_CONFLICT_ARG],
566 [define if posix_test_lock takes a conflict argument],
571 AC_DEFUN([LINUX_EXPORTS_KEY_TYPE_KEYRING], [
572 AC_CHECK_LINUX_BUILD([for exported key_type_keyring],
573 [ac_cv_linux_exports_key_type_keyring],
575 #ifdef HAVE_LINUX_KEY_TYPE_H
576 #include <linux/key-type.h>
578 #include <linux/key.h>
580 [printk("%s", key_type_keyring.name);],
581 [EXPORTED_KEY_TYPE_KEYRING],
582 [define if key_type_keyring is exported],
587 AC_DEFUN([LINUX_HAVE_TRY_TO_FREEZE], [
588 AC_CHECK_LINUX_BUILD([for try_to_freeze],
589 [ac_cv_linux_have_try_to_freeze],
590 [#include <linux/sched.h>
591 #ifdef HAVE_LINUX_FREEZER_H
592 #include <linux/freezer.h>
594 [#ifdef LINUX_REFRIGERATOR_TAKES_PF_FREEZE
595 try_to_freeze(PF_FREEZE);
599 [HAVE_TRY_TO_FREEZE],
600 [define if your kernel has the try_to_freeze function],
605 AC_DEFUN([LINUX_HAVE_DCACHE_LOCK], [
606 AC_CHECK_LINUX_BUILD([for dcache_lock],
607 [ac_cv_linux_have_dcache_lock],
608 [#include <linux/fs.h> ],
609 [printk("%p", &dcache_lock);],
611 [define if dcache_lock exists],
616 AC_DEFUN([LINUX_D_COUNT_IS_INT], [
617 AC_CHECK_LINUX_BUILD([if dentry->d_count is an int],
618 [ac_cv_linux_d_count_int],
619 [#include <linux/fs.h> ],
624 [define if dentry->d_count is an int],
629 AC_DEFUN([LINUX_DOP_D_DELETE_TAKES_CONST], [
630 AC_CHECK_LINUX_BUILD([whether dentry.d_op->d_delete takes a const argument],
631 [ac_cv_linux_dop_d_delete_takes_const],
632 [#include <linux/fs.h>
633 #include <linux/dcache.h>],
634 [struct dentry_operations _d_ops;
635 int _d_del(const struct dentry *de) {return 0;};
636 _d_ops.d_delete = _d_del;],
637 [DOP_D_DELETE_TAKES_CONST],
638 [define if dentry.d_op->d_delete takes a const argument],
643 AC_DEFUN([LINUX_IOP_MKDIR_TAKES_UMODE_T], [
644 AC_CHECK_LINUX_BUILD([whether inode.i_op->mkdir takes a umode_t argument],
645 [ac_cv_linux_iop_mkdir_takes_umode_t],
646 [#include <linux/fs.h>],
647 [struct inode_operations _i_ops;
648 int _mkdir(struct inode *i, struct dentry *d, umode_t m) {return 0;};
649 _i_ops.mkdir = _mkdir;],
650 [IOP_MKDIR_TAKES_UMODE_T],
651 [define if inode.i_op->mkdir takes a umode_t argument],
656 AC_DEFUN([LINUX_IOP_CREATE_TAKES_UMODE_T], [
657 AC_CHECK_LINUX_BUILD([whether inode.i_op->create takes a umode_t argument],
658 [ac_cv_linux_iop_create_takes_umode_t],
659 [#include <linux/fs.h>],
660 [struct inode_operations _i_ops;
661 int _create(struct inode *i, struct dentry *d, umode_t m, struct nameidata *n)
663 _i_ops.create = _create;],
664 [IOP_CREATE_TAKES_UMODE_T],
665 [define if inode.i_op->create takes a umode_t argument],
670 AC_DEFUN([LINUX_EXPORT_OP_ENCODE_FH_TAKES_INODES], [
671 AC_CHECK_LINUX_BUILD([whether export operation encode_fh takes inode arguments],
672 [ac_cv_linux_export_op_encode_fh__takes_inodes],
673 [#include <linux/exportfs.h>],
674 [struct export_operations _exp_ops;
675 int _encode_fh(struct inode *i, __u32 *fh, int *len, struct inode *p)
677 _exp_ops.encode_fh = _encode_fh;],
678 [EXPORT_OP_ENCODE_FH_TAKES_INODES],
679 [define if encode_fh export op takes inode arguments],
684 AC_DEFUN([LINUX_KMAP_ATOMIC_TAKES_NO_KM_TYPE], [
685 AC_CHECK_LINUX_BUILD([whether kmap_atomic takes no km_type argument],
686 [ac_cv_linux_kma_atomic_takes_no_km_type],
687 [#include <linux/highmem.h>],
688 [struct page *p = NULL;
690 [KMAP_ATOMIC_TAKES_NO_KM_TYPE],
691 [define if kmap_atomic takes no km_type argument],
696 AC_DEFUN([LINUX_DENTRY_OPEN_TAKES_PATH], [
697 AC_CHECK_LINUX_BUILD([whether dentry_open takes a path argument],
698 [ac_cv_linux_dentry_open_takes_path],
699 [#include <linux/fs.h>],
701 dentry_open(&p, 0, NULL);],
702 [DENTRY_OPEN_TAKES_PATH],
703 [define if dentry_open takes a path argument],
708 AC_DEFUN([LINUX_D_ALIAS_IS_HLIST], [
709 AC_CHECK_LINUX_BUILD([whether dentry->d_alias is an hlist],
710 [ac_cv_linux_d_alias_is_hlist],
711 [#include <linux/fs.h>],
712 [struct dentry *d = NULL;
713 struct hlist_node *hn = NULL;
716 [define if dentry->d_alias is an hlist],
721 AC_DEFUN([LINUX_HLIST_ITERATOR_NO_NODE], [
722 AC_CHECK_LINUX_BUILD([whether hlist iterators don't need a node parameter],
723 [ac_cv_linux_hlist_takes_no_node],
724 [#include <linux/list.h>
725 #include <linux/fs.h>],
726 [struct dentry *d = NULL, *cur;
728 hlist_for_each_entry(cur, &ip->i_dentry, d_alias) { }
730 [HLIST_ITERATOR_NO_NODE],
731 [define if hlist iterators don't need a node parameter],
736 AC_DEFUN([LINUX_IOP_I_CREATE_TAKES_BOOL], [
737 AC_CHECK_LINUX_BUILD([whether inode_operations.create takes a bool],
738 [ac_cv_linux_func_i_create_takes_bool],
739 [#include <linux/fs.h>
740 #include <linux/namei.h>],
741 [struct inode _inode = {};
742 struct dentry _dentry;
744 (void)_inode.i_op->create(&_inode, &_dentry, 0, b);],
745 [IOP_CREATE_TAKES_BOOL],
746 [define if your iops.create takes a bool argument],
751 AC_DEFUN([LINUX_DOP_D_REVALIDATE_TAKES_UNSIGNED], [
752 AC_CHECK_LINUX_BUILD([whether dentry_operations.d_revalidate takes an unsigned int],
753 [ac_cv_linux_func_d_revalidate_takes_unsigned],
754 [#include <linux/fs.h>
755 #include <linux/namei.h>],
756 [struct dentry_operations dops;
757 int reval(struct dentry *d, unsigned int i) { return 0; };
758 dops.d_revalidate = reval;],
759 [DOP_REVALIDATE_TAKES_UNSIGNED],
760 [define if your dops.d_revalidate takes an unsigned int argument],
765 AC_DEFUN([LINUX_IOP_LOOKUP_TAKES_UNSIGNED], [
766 AC_CHECK_LINUX_BUILD([whether inode operation lookup takes an unsigned int],
767 [ac_cv_linux_func_lookup_takes_unsigned],
768 [#include <linux/fs.h>
769 #include <linux/namei.h>],
770 [struct inode_operations iops;
771 struct dentry *look(struct inode *i, struct dentry *d, unsigned int j) { return NULL; };
772 iops.lookup = look;],
773 [IOP_LOOKUP_TAKES_UNSIGNED],
774 [define if your iops.lookup takes an unsigned int argument],