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],
29 AC_DEFUN([LINUX_EXPORTS_INIT_MM], [
30 AC_CHECK_LINUX_BUILD([for exported init_mm],
31 [ac_cv_linux_exports_init_mm],
32 [extern struct mm_struct init_mm;],
33 [void *address = &init_mm; printk("%p\n", address);],
35 [define if your kernel exports init_mm],
40 AC_DEFUN([LINUX_EXPORTS_KALLSYMS_ADDRESS], [
41 AC_CHECK_LINUX_BUILD([for exported kallsyms_address_to_symbol],
42 [ac_cv_linux_exports_kallsyms_address],
43 [#include <linux/modversions.h>],
44 [#ifndef __ver_kallsyms_address_to_symbol
45 #error kallsyms_address_to_symbol not exported
47 [EXPORTED_KALLSYMS_ADDRESS],
48 [define if your linux kernel exports kallsyms address],
53 AC_DEFUN([LINUX_EXPORTS_KALLSYMS_SYMBOL], [
54 AC_CHECK_LINUX_BUILD([for exported kallsyms_symbol_to_address],
55 [ac_cv_linux_exports_kallsyms_symbol],
56 [#include <linux/modversions.h>],
57 [#ifndef __ver_kallsyms_symbol_to_address
58 #error kallsyms_symbol_to_address not exported
60 [EXPORTED_KALLSYMS_SYMBOL],
61 [define if your linux kernel exports kallsyms],
66 AC_DEFUN([LINUX_EXPORTS_SYS_CALL_TABLE], [
67 AC_CHECK_LINUX_BUILD([for exported sys_call_table],
68 [ac_cv_linux_exports_sys_call_table],
69 [#include <linux/modversions.h>],
70 [#ifndef __ver_sys_call_table
71 #error sys_call_table not exported
73 [EXPORTED_SYS_CALL_TABLE],
74 [define if your linux kernel exports sys_call_table],
79 AC_DEFUN([LINUX_EXPORTS_IA32_SYS_CALL_TABLE], [
80 AC_CHECK_LINUX_BUILD([for exported ia32_sys_call_table],
81 [ac_cv_linux_exports_ia32_sys_call_table],
82 [#include <linux/modversions.h>],
83 [#ifndef __ver_ia32_sys_call_table
84 #error ia32_sys_call_table not exported
86 [EXPORTED_IA32_SYS_CALL_TABLE],
87 [define if your linux kernel exports ia32_sys_call_table],
92 AC_DEFUN([LINUX_EXPORTS_SYS_CHDIR], [
93 AC_CHECK_LINUX_BUILD([for exported sys_chdir],
94 [ac_cv_linux_exports_sys_chdir],
95 [extern asmlinkage long sys_chdir(void) __attribute__((weak));],
96 [void *address = &sys_chdir; printk("%p\n", address);],
98 [define if your linux kernel exports sys_chdir],
103 AC_DEFUN([LINUX_EXPORTS_SYS_OPEN], [
104 AC_CHECK_LINUX_BUILD([for exported sys_open],
105 [ac_cv_linux_exports_sys_open],
106 [extern asmlinkage long sys_open(void) __attribute__((weak));],
107 [void *address = &sys_open; printk("%p\n", address);],
109 [define if your linux kernel exports sys_open],
114 AC_DEFUN([LINUX_RECALC_SIGPENDING_ARG_TYPE], [
115 AC_CHECK_LINUX_BUILD([for recalc_sigpending arg type],
116 [ac_cv_linux_func_recalc_sigpending_takes_void],
117 [#include <linux/sched.h>
118 #ifdef HAVE_LINUX_SCHED_SIGNAL_H
119 #include <linux/sched/signal.h>
121 [recalc_sigpending();],
122 [RECALC_SIGPENDING_TAKES_VOID],
123 [define if your recalc_sigpending takes void],
128 AC_DEFUN([LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_SIGNAL_RLIM], [
129 AC_CHECK_LINUX_BUILD([for signal->rlim in struct task_struct],
130 [ac_cv_linux_sched_struct_task_struct_has_signal_rlim],
131 [#include <linux/sched.h>
132 #ifdef HAVE_LINUX_SCHED_SIGNAL_H
133 #include <linux/sched/signal.h>
135 [struct task_struct _tsk; printk("%d\n", _tsk.signal->rlim);],
136 [STRUCT_TASK_STRUCT_HAS_SIGNAL_RLIM],
137 [define if your struct task_struct has signal->rlim],
142 AC_DEFUN([LINUX_KERNEL_POSIX_LOCK_FILE_WAIT_ARG], [
143 AC_CHECK_LINUX_BUILD([for 3rd argument in posix_lock_file found in new kernels],
144 [ac_cv_linux_kernel_posix_lock_file_wait_arg],
145 [#include <linux/fs.h>],
146 [posix_lock_file(0,0,0);],
147 [POSIX_LOCK_FILE_WAIT_ARG],
148 [define if your kernel uses 3 arguments for posix_lock_file],
152 AC_DEFUN([LINUX_KERNEL_SOCK_CREATE], [
153 AC_CHECK_LINUX_BUILD([for 5th argument in sock_create found in some SELinux kernels],
154 [ac_cv_linux_kernel_sock_create_v],
155 [#include <linux/net.h>],
156 [sock_create(0,0,0,0,0);],
157 [LINUX_KERNEL_SOCK_CREATE_V],
158 [define if your linux kernel uses 5 arguments for sock_create],
163 AC_DEFUN([LINUX_INODE_SETATTR_RETURN_TYPE], [
164 AC_CHECK_LINUX_BUILD([for inode_setattr return type],
165 [ac_cv_linux_func_inode_setattr_returns_int],
166 [#include <linux/fs.h>],
167 [struct inode _inode;
170 i = inode_setattr(&_inode, &_iattr);],
171 [INODE_SETATTR_NOT_VOID],
172 [define if your setattr return return non-void],
178 AC_DEFUN([LINUX_AOP_WRITEBACK_CONTROL], [
179 AC_CHECK_LINUX_BUILD([whether aop.writepage takes a writeback_control],
180 [ac_cv_linux_func_a_writepage_takes_writeback_control],
181 [#include <linux/fs.h>
182 #include <linux/mm.h>
183 #include <linux/writeback.h>],
184 [struct address_space_operations _aops;
186 struct writeback_control _writeback_control;
187 (void)_aops.writepage(&_page, &_writeback_control);],
188 [AOP_WRITEPAGE_TAKES_WRITEBACK_CONTROL],
189 [define if aops.writepage takes a struct writeback_control],
194 AC_DEFUN([LINUX_REFRIGERATOR], [
195 AC_CHECK_LINUX_BUILD([whether refrigerator takes PF_FREEZE],
196 [ac_cv_linux_func_refrigerator_takes_pf_freeze],
197 [#include <linux/sched.h>
198 #ifdef HAVE_LINUX_FREEZER_H
199 #include <linux/freezer.h>
201 [refrigerator(PF_FREEZE);],
202 [LINUX_REFRIGERATOR_TAKES_PF_FREEZE],
203 [define if your refrigerator takes PF_FREEZE],
208 AC_DEFUN([LINUX_IOP_I_CREATE_TAKES_NAMEIDATA], [
209 AC_CHECK_LINUX_BUILD([whether inode_operations.create takes a nameidata],
210 [ac_cv_linux_func_i_create_takes_nameidata],
211 [#include <linux/fs.h>
212 #include <linux/namei.h>],
213 [struct inode _inode;
214 struct dentry _dentry;
215 struct nameidata _nameidata;
216 (void)_inode.i_op->create(&_inode, &_dentry, 0, &_nameidata);],
218 [IOP_CREATE_TAKES_NAMEIDATA],
219 [define if your iops.create takes a nameidata argument],
224 AC_DEFUN([LINUX_IOP_I_LOOKUP_TAKES_NAMEIDATA], [
225 AC_CHECK_LINUX_BUILD([whether inode_operations.lookup takes a nameidata],
226 [ac_cv_linux_func_i_lookup_takes_nameidata],
227 [#include <linux/fs.h>
228 #include <linux/namei.h>],
229 [struct inode _inode;
230 struct dentry _dentry;
231 struct nameidata _nameidata;
232 (void)_inode.i_op->lookup(&_inode, &_dentry, &_nameidata);],
233 [IOP_LOOKUP_TAKES_NAMEIDATA],
234 [define if your iops.lookup takes a nameidata argument],
239 AC_DEFUN([LINUX_IOP_I_PERMISSION_TAKES_NAMEIDATA], [
240 AC_CHECK_LINUX_BUILD([whether inode_operations.permission takes a nameidata],
241 [ac_cv_linux_func_i_permission_takes_nameidata],
242 [#include <linux/fs.h>
243 #include <linux/namei.h>],
244 [struct inode _inode;
245 struct nameidata _nameidata;
246 (void)_inode.i_op->permission(&_inode, 0, &_nameidata);],
247 [IOP_PERMISSION_TAKES_NAMEIDATA],
248 [define if your iops.permission takes a nameidata argument],
253 AC_DEFUN([LINUX_IOP_I_PERMISSION_TAKES_FLAGS], [
254 AC_CHECK_LINUX_BUILD([whether inode_operations.permission takes flags],
255 [ac_cv_linux_func_i_permission_takes_flags],
256 [#include <linux/fs.h>],
257 [struct inode _inode = {0};
258 unsigned int flags = 0;
259 (void)_inode.i_op->permission(&_inode, 0, flags);],
260 [IOP_PERMISSION_TAKES_FLAGS],
261 [define if your iops.permission takes a flags argument],
266 AC_DEFUN([LINUX_IOP_I_PUT_LINK_TAKES_COOKIE], [
267 AC_CHECK_LINUX_BUILD([whether inode_operations.put_link takes an opaque cookie],
268 [ac_cv_linux_func_i_put_link_takes_cookie],
269 [#include <linux/fs.h>
270 #include <linux/namei.h>],
271 [struct inode _inode;
272 struct dentry _dentry;
273 struct nameidata *_nameidata;
275 (void)_inode.i_op->put_link(&_dentry, _nameidata, cookie);],
276 [IOP_PUT_LINK_TAKES_COOKIE],
277 [define if your iops.put_link takes a cookie],
282 AC_DEFUN([LINUX_DOP_D_REVALIDATE_TAKES_NAMEIDATA], [
283 AC_CHECK_LINUX_BUILD([whether dentry_operations.d_revalidate takes a nameidata],
284 [ac_cv_linux_func_d_revalidate_takes_nameidata],
285 [#include <linux/fs.h>
286 #include <linux/namei.h>
287 static int reval(struct dentry *d, struct nameidata *nd) { return 0; }
288 struct dentry_operations dops;],
289 [dops.d_revalidate = reval;],
290 [DOP_REVALIDATE_TAKES_NAMEIDATA],
291 [define if your dops.d_revalidate takes a nameidata argument],
296 AC_DEFUN([LINUX_GET_SB_HAS_STRUCT_VFSMOUNT], [
297 AC_CHECK_LINUX_BUILD([for struct vfsmount * in get_sb_nodev()],
298 [ac_cv_linux_get_sb_has_struct_vfsmount],
299 [#include <linux/fs.h>],
300 [get_sb_nodev(0,0,0,0,0);],
301 [GET_SB_HAS_STRUCT_VFSMOUNT],
302 [define if your get_sb_nodev needs a struct vfsmount argument],
307 AC_DEFUN([LINUX_STATFS_TAKES_DENTRY], [
308 AC_CHECK_LINUX_BUILD([for dentry in statfs],
309 [ac_cv_linux_statfs_takes_dentry],
310 [#include <linux/fs.h>
311 #include <linux/statfs.h>],
312 [extern int simple_statfs(struct dentry *, struct kstatfs *);],
313 [STATFS_TAKES_DENTRY],
314 [define if your statfs takes a dentry argument],
319 AC_DEFUN([LINUX_LINUX_KEYRING_SUPPORT], [
320 AC_CHECK_LINUX_BUILD([for linux kernel keyring support],
321 [ac_cv_linux_keyring_support],
322 [#include <linux/rwsem.h>
323 #ifdef HAVE_LINUX_KEY_TYPE_H
324 #include <linux/key-type.h>
326 #include <linux/key.h>
327 #include <linux/keyctl.h>],
329 request_key(NULL, NULL, NULL);
330 #if !defined(KEY_POS_VIEW) || !defined(KEY_POS_SEARCH) || !defined(KEY_POS_SETATTR)
331 #error "Your linux/key.h does not contain KEY_POS_VIEW or KEY_POS_SEARCH or KEY_POS_SETATTR"
334 #error rebuild your kernel with CONFIG_KEYS
336 [LINUX_KEYRING_SUPPORT],
337 [define if your kernel has keyring support],
342 AC_DEFUN([LINUX_KEY_ALLOC_NEEDS_STRUCT_TASK], [
343 AC_CHECK_LINUX_BUILD([if key_alloc() takes a struct task *],
344 [ac_cv_key_alloc_needs_struct_task],
345 [#include <linux/rwsem.h>
346 #include <linux/key.h> ],
347 [struct task_struct *t=NULL;
349 (void) key_alloc(NULL, NULL, k.uid, k.gid, t, 0, 0);],
350 [KEY_ALLOC_NEEDS_STRUCT_TASK],
351 [define if key_alloc takes a struct task *],
352 [-Werror -Wno-pointer-arith])
356 AC_DEFUN([LINUX_KEY_ALLOC_NEEDS_CRED], [
357 AC_CHECK_LINUX_BUILD([if key_alloc() takes credentials],
358 [ac_cv_key_alloc_needs_cred],
359 [#include <linux/rwsem.h>
360 #include <linux/key.h>],
361 [struct cred *c = NULL;
363 (void) key_alloc(NULL, NULL, k.uid, k.gid, c, 0, 0);],
364 [KEY_ALLOC_NEEDS_CRED],
365 [define if key_alloc takes credentials],
366 [-Werror -Wno-pointer-arith])
370 AC_DEFUN([LINUX_INIT_WORK_HAS_DATA], [
371 AC_CHECK_LINUX_BUILD([whether INIT_WORK has a _data argument],
372 [ac_cv_linux_init_work_has_data],
373 [#include <linux/kernel.h>
374 #include <linux/workqueue.h>],
376 void f(struct work_struct *w) {}
377 struct work_struct *w;
380 [INIT_WORK_HAS_DATA],
381 [define if INIT_WORK takes a data (3rd) argument],
386 AC_DEFUN([LINUX_REGISTER_SYSCTL_TABLE_NOFLAG], [
387 AC_CHECK_LINUX_BUILD([whether register_sysctl_table has an insert_at_head argument],
388 [ac_cv_linux_register_sysctl_table_noflag],
389 [#include <linux/sysctl.h>],
390 [struct ctl_table *t; register_sysctl_table (t);],
391 [REGISTER_SYSCTL_TABLE_NOFLAG],
392 [define if register_sysctl_table has no insert_at head flag],
397 AC_DEFUN([LINUX_FOP_F_FLUSH_TAKES_FL_OWNER_T], [
398 AC_CHECK_LINUX_BUILD([whether file_operations.flush takes a fl_owner_t],
399 [ac_cv_linux_func_f_flush_takes_fl_owner_t],
400 [#include <linux/fs.h>],
401 [struct inode _inode;
404 (void)_inode.i_fop->flush(&_file, &id);],
405 [FOP_FLUSH_TAKES_FL_OWNER_T],
406 [define if your fops.flush takes an fl_owner_t argument],
411 AC_DEFUN([LINUX_FOP_F_FSYNC_TAKES_DENTRY], [
412 AC_CHECK_LINUX_BUILD([whether file_operations.fsync takes a dentry argument],
413 [ac_cv_linux_func_f_fsync_takes_dentry],
414 [#include <linux/fs.h>],
415 [struct inode _inode;
418 (void)_inode.i_fop->fsync(&_file, &_d, 0);],
419 [FOP_FSYNC_TAKES_DENTRY],
420 [define if your fops.fsync takes an dentry argument],
425 int (*fsync) (struct file *, loff_t start, loff_t end, int datasync);
427 AC_DEFUN([LINUX_FOP_F_FSYNC_TAKES_RANGE], [
428 AC_CHECK_LINUX_BUILD([whether file_operations.fsync takes a range],
429 [ac_cv_linux_func_f_fsync_takes_range],
430 [#include <linux/fs.h>],
431 [struct inode _inode;
434 (void)_inode.i_fop->fsync(&_file, start, end, 0);],
435 [FOP_FSYNC_TAKES_RANGE],
436 [define if your fops.fsync takes range arguments],
441 AC_DEFUN([LINUX_HAVE_KMEM_CACHE_T], [
442 AC_CHECK_LINUX_BUILD([whether kmem_cache_t exists],
443 [ac_cv_linux_have_kmem_cache_t],
444 [#include <linux/slab.h>],
447 [define if kmem_cache_t exists],
452 AC_DEFUN([LINUX_KMEM_CACHE_CREATE_TAKES_DTOR], [
453 AC_CHECK_LINUX_BUILD([whether kmem_cache_create takes a destructor argument],
454 [ac_cv_linux_kmem_cache_create_takes_dtor],
455 [#include <linux/slab.h>],
456 [kmem_cache_create(NULL, 0, 0, 0, NULL, NULL);],
457 [KMEM_CACHE_TAKES_DTOR],
458 [define if kmem_cache_create takes a destructor argument],
463 AC_DEFUN([LINUX_KMEM_CACHE_CREATE_CTOR_TAKES_VOID],[
464 AC_CHECK_LINUX_BUILD([whether kmem_cache_create constructor takes a void pointer],
465 [ac_cv_linux_kmem_cache_create_ctor_takes_void],
466 [#include <linux/slab.h>],
467 [void _ctor(void *v) { }; kmem_cache_create(NULL, 0, 0, 0, _ctor);],
468 [KMEM_CACHE_CTOR_TAKES_VOID],
469 [define if kmem_cache_create constructor takes a single void ptr],
474 dnl This function checks not just the existence of the splice functions,
475 dnl but also that the signature matches (they gained an extra argument
477 AC_DEFUN([LINUX_FS_STRUCT_FOP_HAS_SPLICE], [
478 AC_CHECK_LINUX_BUILD([for splice_write and splice_read in struct file_operations],
479 [ac_cv_linux_fs_struct_fop_has_splice],
480 [#include <linux/fs.h>],
481 [struct file_operations _fop;
482 _fop.splice_write(NULL, NULL, NULL, 0, 0);
483 _fop.splice_read(NULL, NULL, NULL, 0, 0);],
484 [STRUCT_FILE_OPERATIONS_HAS_SPLICE],
485 [define if struct file_operations has splice functions],
490 AC_DEFUN([LINUX_KMEM_CACHE_INIT], [
491 AC_CHECK_LINUX_BUILD([for new kmem_cache init function parameters],
492 [ac_cv_linux_kmem_cache_init],
493 [#include <linux/slab.h>],
494 [extern struct kmem_cache *
495 kmem_cache_create(const char *, size_t, size_t,
497 void (*)(struct kmem_cache *, void *));
500 [define for new kmem_cache init function parameters],
505 AC_DEFUN([LINUX_EXPORTS_PROC_ROOT_FS], [
506 AC_CHECK_LINUX_BUILD([if proc_root_fs is defined and exported],
507 [ac_cv_linux_exports_proc_root_fs],
508 [#include <linux/proc_fs.h>],
509 [struct proc_dir_entry *p = proc_root_fs;],
510 [EXPORTED_PROC_ROOT_FS],
511 [define if proc_root_fs is exported],
516 AC_DEFUN([LINUX_D_PATH_TAKES_STRUCT_PATH], [
517 AC_CHECK_LINUX_BUILD([if d_path() takes a struct path argument],
518 [ac_cv_linux_d_path_takes_struct_path],
519 [#include <linux/fs.h>],
520 [struct path *p; d_path(p, NULL, 0);],
521 [D_PATH_TAKES_STRUCT_PATH],
522 [define if d_path() takes a struct path argument],
527 AC_DEFUN([LINUX_NEW_EXPORT_OPS], [
528 AC_CHECK_LINUX_BUILD([if kernel uses new export ops],
529 [ac_cv_linux_new_export_ops],
530 [#include <linux/exportfs.h>],
531 [struct export_operations _eops;
532 _eops.fh_to_parent(NULL, NULL, 0, 0);],
534 [define if kernel uses new export ops],
539 AC_DEFUN([LINUX_POSIX_TEST_LOCK_RETURNS_CONFLICT], [
540 AC_CHECK_LINUX_BUILD([if posix_test_lock returns a struct file_lock],
541 [ac_cv_linux_posix_test_lock_returns_conflict],
542 [#include <linux/fs.h>],
543 [struct file_lock *lock;
545 lock = posix_test_lock(file, lock);],
546 [POSIX_TEST_LOCK_RETURNS_CONFLICT],
547 [define if posix_test_lock returns the conflicting lock],
552 AC_DEFUN([LINUX_POSIX_TEST_LOCK_CONFLICT_ARG], [
553 AC_CHECK_LINUX_BUILD([if posix_test_lock takes a conflict argument],
554 [ac_cv_linux_posix_test_lock_conflict_arg],
555 [#include <linux/fs.h>],
556 [struct file_lock *lock;
558 posix_test_lock(file, lock, lock);],
559 [POSIX_TEST_LOCK_CONFLICT_ARG],
560 [define if posix_test_lock takes a conflict argument],
565 AC_DEFUN([LINUX_EXPORTS_KEY_TYPE_KEYRING], [
566 AC_CHECK_LINUX_BUILD([for exported key_type_keyring],
567 [ac_cv_linux_exports_key_type_keyring],
569 #ifdef HAVE_LINUX_KEY_TYPE_H
570 #include <linux/key-type.h>
572 #include <linux/key.h>
574 [printk("%s", key_type_keyring.name);],
575 [EXPORTED_KEY_TYPE_KEYRING],
576 [define if key_type_keyring is exported],
581 AC_DEFUN([LINUX_HAVE_TRY_TO_FREEZE], [
582 AC_CHECK_LINUX_BUILD([for try_to_freeze],
583 [ac_cv_linux_have_try_to_freeze],
584 [#include <linux/sched.h>
585 #ifdef HAVE_LINUX_FREEZER_H
586 #include <linux/freezer.h>
588 [#ifdef LINUX_REFRIGERATOR_TAKES_PF_FREEZE
589 try_to_freeze(PF_FREEZE);
593 [HAVE_TRY_TO_FREEZE],
594 [define if your kernel has the try_to_freeze function],
599 AC_DEFUN([LINUX_HAVE_DCACHE_LOCK], [
600 AC_CHECK_LINUX_BUILD([for dcache_lock],
601 [ac_cv_linux_have_dcache_lock],
602 [#include <linux/fs.h> ],
603 [printk("%p", &dcache_lock);],
605 [define if dcache_lock exists],
610 AC_DEFUN([LINUX_D_COUNT_IS_INT], [
611 AC_CHECK_LINUX_BUILD([if dentry->d_count is an int],
612 [ac_cv_linux_d_count_int],
613 [#include <linux/fs.h> ],
618 [define if dentry->d_count is an int],
623 AC_DEFUN([LINUX_DOP_D_DELETE_TAKES_CONST], [
624 AC_CHECK_LINUX_BUILD([whether dentry.d_op->d_delete takes a const argument],
625 [ac_cv_linux_dop_d_delete_takes_const],
626 [#include <linux/fs.h>
627 #include <linux/dcache.h>
628 static int _d_del(const struct dentry *de) { return 0; }
629 struct dentry_operations _d_ops;],
630 [_d_ops.d_delete = _d_del;],
631 [DOP_D_DELETE_TAKES_CONST],
632 [define if dentry.d_op->d_delete takes a const argument],
636 AC_DEFUN([LINUX_IOP_GETATTR_TAKES_PATH_STRUCT], [
637 AC_CHECK_LINUX_BUILD([whether 4.11+ inode.i_op->getattr takes a struct path argument],
638 [ac_cv_linux_iop_getattr_takes_path_struct],
639 [#include <linux/fs.h>
640 int _getattr(const struct path *path, struct kstat *stat, u32 request_mask,
641 unsigned int sync_mode) {return 0;};
642 struct inode_operations _i_ops;],
643 [_i_ops.getattr = _getattr;],
644 [IOP_GETATTR_TAKES_PATH_STRUCT],
645 [define if 4.11+ inode.i_op->getattr takes a struct path argument],
649 AC_DEFUN([LINUX_IOP_MKDIR_TAKES_UMODE_T], [
650 AC_CHECK_LINUX_BUILD([whether inode.i_op->mkdir takes a umode_t argument],
651 [ac_cv_linux_iop_mkdir_takes_umode_t],
652 [#include <linux/fs.h>
653 static int _mkdir(struct inode *i, struct dentry *d, umode_t m) { return 0; }
654 struct inode_operations _i_ops;],
655 [_i_ops.mkdir = _mkdir;],
656 [IOP_MKDIR_TAKES_UMODE_T],
657 [define if inode.i_op->mkdir takes a umode_t argument],
662 AC_DEFUN([LINUX_IOP_CREATE_TAKES_UMODE_T], [
663 AC_CHECK_LINUX_BUILD([whether inode.i_op->create takes a umode_t argument],
664 [ac_cv_linux_iop_create_takes_umode_t],
665 [#include <linux/fs.h>],
666 [struct inode_operations _i_ops;
667 int _create(struct inode *i, struct dentry *d, umode_t m, struct nameidata *n)
669 _i_ops.create = _create;],
670 [IOP_CREATE_TAKES_UMODE_T],
671 [define if inode.i_op->create takes a umode_t argument],
676 AC_DEFUN([LINUX_EXPORT_OP_ENCODE_FH_TAKES_INODES], [
677 AC_CHECK_LINUX_BUILD([whether export operation encode_fh takes inode arguments],
678 [ac_cv_linux_export_op_encode_fh__takes_inodes],
679 [#include <linux/exportfs.h>
680 static int _encode_fh(struct inode *i, __u32 *fh, int *len, struct inode *p) { return 0; }
681 struct export_operations _exp_ops;],
682 [_exp_ops.encode_fh = _encode_fh;],
683 [EXPORT_OP_ENCODE_FH_TAKES_INODES],
684 [define if encode_fh export op takes inode arguments],
689 AC_DEFUN([LINUX_KMAP_ATOMIC_TAKES_NO_KM_TYPE], [
690 AC_CHECK_LINUX_BUILD([whether kmap_atomic takes no km_type argument],
691 [ac_cv_linux_kma_atomic_takes_no_km_type],
692 [#include <linux/highmem.h>],
693 [struct page *p = NULL;
695 [KMAP_ATOMIC_TAKES_NO_KM_TYPE],
696 [define if kmap_atomic takes no km_type argument],
701 AC_DEFUN([LINUX_DENTRY_OPEN_TAKES_PATH], [
702 AC_CHECK_LINUX_BUILD([whether dentry_open takes a path argument],
703 [ac_cv_linux_dentry_open_takes_path],
704 [#include <linux/fs.h>],
706 dentry_open(&p, 0, NULL);],
707 [DENTRY_OPEN_TAKES_PATH],
708 [define if dentry_open takes a path argument],
713 AC_DEFUN([LINUX_D_ALIAS_IS_HLIST], [
714 AC_CHECK_LINUX_BUILD([whether dentry->d_alias is an hlist],
715 [ac_cv_linux_d_alias_is_hlist],
716 [#include <linux/fs.h>],
717 [struct dentry *d = NULL;
718 struct hlist_node *hn = NULL;
719 #if defined(STRUCT_DENTRY_HAS_D_U_D_ALIAS)
720 d->d_u.d_alias = *hn;
725 [define if dentry->d_alias is an hlist],
730 AC_DEFUN([LINUX_HLIST_ITERATOR_NO_NODE], [
731 AC_CHECK_LINUX_BUILD([whether hlist iterators don't need a node parameter],
732 [ac_cv_linux_hlist_takes_no_node],
733 [#include <linux/list.h>
734 #include <linux/fs.h>],
735 [struct dentry *d = NULL, *cur;
737 #if defined(STRUCT_DENTRY_HAS_D_U_D_ALIAS)
738 # define d_alias d_u.d_alias
740 hlist_for_each_entry(cur, &ip->i_dentry, d_alias) { }
742 [HLIST_ITERATOR_NO_NODE],
743 [define if hlist iterators don't need a node parameter],
748 AC_DEFUN([LINUX_IOP_I_CREATE_TAKES_BOOL], [
749 AC_CHECK_LINUX_BUILD([whether inode_operations.create takes a bool],
750 [ac_cv_linux_func_i_create_takes_bool],
751 [#include <linux/fs.h>
752 #include <linux/namei.h>],
753 [struct inode _inode = {};
754 struct dentry _dentry;
756 (void)_inode.i_op->create(&_inode, &_dentry, 0, b);],
757 [IOP_CREATE_TAKES_BOOL],
758 [define if your iops.create takes a bool argument],
763 AC_DEFUN([LINUX_DOP_D_REVALIDATE_TAKES_UNSIGNED], [
764 AC_CHECK_LINUX_BUILD([whether dentry_operations.d_revalidate takes an unsigned int],
765 [ac_cv_linux_func_d_revalidate_takes_unsigned],
766 [#include <linux/fs.h>
767 #include <linux/namei.h>
768 static int reval(struct dentry *d, unsigned int i) { return 0; }
769 struct dentry_operations _d_ops;],
770 [_d_ops.d_revalidate = reval;],
771 [DOP_REVALIDATE_TAKES_UNSIGNED],
772 [define if your dops.d_revalidate takes an unsigned int argument],
777 AC_DEFUN([LINUX_IOP_LOOKUP_TAKES_UNSIGNED], [
778 AC_CHECK_LINUX_BUILD([whether inode operation lookup takes an unsigned int],
779 [ac_cv_linux_func_lookup_takes_unsigned],
780 [#include <linux/fs.h>
781 #include <linux/namei.h>
782 static struct dentry *look(struct inode *i, struct dentry *d, unsigned int j) { return NULL; }
783 struct inode_operations _i_ops;],
784 [_i_ops.lookup = look;],
785 [IOP_LOOKUP_TAKES_UNSIGNED],
786 [define if your iops.lookup takes an unsigned int argument],
791 AC_DEFUN([LINUX_D_INVALIDATE_IS_VOID], [
792 AC_CHECK_LINUX_BUILD([whether d_invalidate returns void],
793 [ac_cv_linux_func_d_invalidate_returns_void],
794 [#include <linux/fs.h>],
796 void d_invalidate(struct dentry *);
798 [D_INVALIDATE_IS_VOID],
799 [define if your d_invalidate returns void],