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_PAGEVEC_INIT_COLD_ARG], [
153 AC_CHECK_LINUX_BUILD([for 2nd argument in pagevec_init found in pre-4.15 kernels],
154 [ac_cv_linux_kernel_pagevec_init_cold_arg],
155 [#include <linux/pagevec.h>],
156 [pagevec_init(0,0);],
157 [PAGEVEC_INIT_COLD_ARG],
158 [define if your kernel uses 2 arguments for pagevec_init],
162 AC_DEFUN([LINUX_KERNEL_SOCK_CREATE], [
163 AC_CHECK_LINUX_BUILD([for 5th argument in sock_create found in some SELinux kernels],
164 [ac_cv_linux_kernel_sock_create_v],
165 [#include <linux/net.h>],
166 [sock_create(0,0,0,0,0);],
167 [LINUX_KERNEL_SOCK_CREATE_V],
168 [define if your linux kernel uses 5 arguments for sock_create],
173 AC_DEFUN([LINUX_INODE_SETATTR_RETURN_TYPE], [
174 AC_CHECK_LINUX_BUILD([for inode_setattr return type],
175 [ac_cv_linux_func_inode_setattr_returns_int],
176 [#include <linux/fs.h>],
177 [struct inode _inode;
180 i = inode_setattr(&_inode, &_iattr);],
181 [INODE_SETATTR_NOT_VOID],
182 [define if your setattr return return non-void],
188 AC_DEFUN([LINUX_AOP_WRITEBACK_CONTROL], [
189 AC_CHECK_LINUX_BUILD([whether aop.writepage takes a writeback_control],
190 [ac_cv_linux_func_a_writepage_takes_writeback_control],
191 [#include <linux/fs.h>
192 #include <linux/mm.h>
193 #include <linux/writeback.h>],
194 [struct address_space_operations _aops;
196 struct writeback_control _writeback_control;
197 (void)_aops.writepage(&_page, &_writeback_control);],
198 [AOP_WRITEPAGE_TAKES_WRITEBACK_CONTROL],
199 [define if aops.writepage takes a struct writeback_control],
204 AC_DEFUN([LINUX_REFRIGERATOR], [
205 AC_CHECK_LINUX_BUILD([whether refrigerator takes PF_FREEZE],
206 [ac_cv_linux_func_refrigerator_takes_pf_freeze],
207 [#include <linux/sched.h>
208 #ifdef HAVE_LINUX_FREEZER_H
209 #include <linux/freezer.h>
211 [refrigerator(PF_FREEZE);],
212 [LINUX_REFRIGERATOR_TAKES_PF_FREEZE],
213 [define if your refrigerator takes PF_FREEZE],
218 AC_DEFUN([LINUX_IOP_I_CREATE_TAKES_NAMEIDATA], [
219 AC_CHECK_LINUX_BUILD([whether inode_operations.create takes a nameidata],
220 [ac_cv_linux_func_i_create_takes_nameidata],
221 [#include <linux/fs.h>
222 #include <linux/namei.h>],
223 [struct inode _inode;
224 struct dentry _dentry;
225 struct nameidata _nameidata;
226 (void)_inode.i_op->create(&_inode, &_dentry, 0, &_nameidata);],
228 [IOP_CREATE_TAKES_NAMEIDATA],
229 [define if your iops.create takes a nameidata argument],
234 AC_DEFUN([LINUX_IOP_I_LOOKUP_TAKES_NAMEIDATA], [
235 AC_CHECK_LINUX_BUILD([whether inode_operations.lookup takes a nameidata],
236 [ac_cv_linux_func_i_lookup_takes_nameidata],
237 [#include <linux/fs.h>
238 #include <linux/namei.h>],
239 [struct inode _inode;
240 struct dentry _dentry;
241 struct nameidata _nameidata;
242 (void)_inode.i_op->lookup(&_inode, &_dentry, &_nameidata);],
243 [IOP_LOOKUP_TAKES_NAMEIDATA],
244 [define if your iops.lookup takes a nameidata argument],
249 AC_DEFUN([LINUX_IOP_I_PERMISSION_TAKES_NAMEIDATA], [
250 AC_CHECK_LINUX_BUILD([whether inode_operations.permission takes a nameidata],
251 [ac_cv_linux_func_i_permission_takes_nameidata],
252 [#include <linux/fs.h>
253 #include <linux/namei.h>],
254 [struct inode _inode;
255 struct nameidata _nameidata;
256 (void)_inode.i_op->permission(&_inode, 0, &_nameidata);],
257 [IOP_PERMISSION_TAKES_NAMEIDATA],
258 [define if your iops.permission takes a nameidata argument],
263 AC_DEFUN([LINUX_IOP_I_PERMISSION_TAKES_FLAGS], [
264 AC_CHECK_LINUX_BUILD([whether inode_operations.permission takes flags],
265 [ac_cv_linux_func_i_permission_takes_flags],
266 [#include <linux/fs.h>],
267 [struct inode _inode = {0};
268 unsigned int flags = 0;
269 (void)_inode.i_op->permission(&_inode, 0, flags);],
270 [IOP_PERMISSION_TAKES_FLAGS],
271 [define if your iops.permission takes a flags argument],
276 AC_DEFUN([LINUX_IOP_I_PUT_LINK_TAKES_COOKIE], [
277 AC_CHECK_LINUX_BUILD([whether inode_operations.put_link takes an opaque cookie],
278 [ac_cv_linux_func_i_put_link_takes_cookie],
279 [#include <linux/fs.h>
280 #include <linux/namei.h>],
281 [struct inode _inode;
282 struct dentry _dentry;
283 struct nameidata *_nameidata;
285 (void)_inode.i_op->put_link(&_dentry, _nameidata, cookie);],
286 [IOP_PUT_LINK_TAKES_COOKIE],
287 [define if your iops.put_link takes a cookie],
292 AC_DEFUN([LINUX_DOP_D_REVALIDATE_TAKES_NAMEIDATA], [
293 AC_CHECK_LINUX_BUILD([whether dentry_operations.d_revalidate takes a nameidata],
294 [ac_cv_linux_func_d_revalidate_takes_nameidata],
295 [#include <linux/fs.h>
296 #include <linux/namei.h>
297 static int reval(struct dentry *d, struct nameidata *nd) { return 0; }
298 struct dentry_operations dops;],
299 [dops.d_revalidate = reval;],
300 [DOP_REVALIDATE_TAKES_NAMEIDATA],
301 [define if your dops.d_revalidate takes a nameidata argument],
306 AC_DEFUN([LINUX_GET_SB_HAS_STRUCT_VFSMOUNT], [
307 AC_CHECK_LINUX_BUILD([for struct vfsmount * in get_sb_nodev()],
308 [ac_cv_linux_get_sb_has_struct_vfsmount],
309 [#include <linux/fs.h>],
310 [get_sb_nodev(0,0,0,0,0);],
311 [GET_SB_HAS_STRUCT_VFSMOUNT],
312 [define if your get_sb_nodev needs a struct vfsmount argument],
317 AC_DEFUN([LINUX_STATFS_TAKES_DENTRY], [
318 AC_CHECK_LINUX_BUILD([for dentry in statfs],
319 [ac_cv_linux_statfs_takes_dentry],
320 [#include <linux/fs.h>
321 #include <linux/statfs.h>],
322 [extern int simple_statfs(struct dentry *, struct kstatfs *);],
323 [STATFS_TAKES_DENTRY],
324 [define if your statfs takes a dentry argument],
329 AC_DEFUN([LINUX_LINUX_KEYRING_SUPPORT], [
330 AC_CHECK_LINUX_BUILD([for linux kernel keyring support],
331 [ac_cv_linux_keyring_support],
332 [#include <linux/rwsem.h>
333 #ifdef HAVE_LINUX_KEY_TYPE_H
334 #include <linux/key-type.h>
336 #include <linux/key.h>
337 #include <linux/keyctl.h>],
339 request_key(NULL, NULL, NULL);
340 #if !defined(KEY_POS_VIEW) || !defined(KEY_POS_SEARCH) || !defined(KEY_POS_SETATTR)
341 #error "Your linux/key.h does not contain KEY_POS_VIEW or KEY_POS_SEARCH or KEY_POS_SETATTR"
344 #error rebuild your kernel with CONFIG_KEYS
346 [LINUX_KEYRING_SUPPORT],
347 [define if your kernel has keyring support],
352 AC_DEFUN([LINUX_KEY_ALLOC_NEEDS_STRUCT_TASK], [
353 AC_CHECK_LINUX_BUILD([if key_alloc() takes a struct task *],
354 [ac_cv_key_alloc_needs_struct_task],
355 [#include <linux/rwsem.h>
356 #include <linux/key.h> ],
357 [struct task_struct *t=NULL;
359 (void) key_alloc(NULL, NULL, k.uid, k.gid, t, 0, 0);],
360 [KEY_ALLOC_NEEDS_STRUCT_TASK],
361 [define if key_alloc takes a struct task *],
362 [-Werror -Wno-pointer-arith])
366 AC_DEFUN([LINUX_KEY_ALLOC_NEEDS_CRED], [
367 AC_CHECK_LINUX_BUILD([if key_alloc() takes credentials],
368 [ac_cv_key_alloc_needs_cred],
369 [#include <linux/rwsem.h>
370 #include <linux/key.h>],
371 [struct cred *c = NULL;
373 (void) key_alloc(NULL, NULL, k.uid, k.gid, c, 0, 0);],
374 [KEY_ALLOC_NEEDS_CRED],
375 [define if key_alloc takes credentials],
376 [-Werror -Wno-pointer-arith])
380 AC_DEFUN([LINUX_INIT_WORK_HAS_DATA], [
381 AC_CHECK_LINUX_BUILD([whether INIT_WORK has a _data argument],
382 [ac_cv_linux_init_work_has_data],
383 [#include <linux/kernel.h>
384 #include <linux/workqueue.h>],
386 void f(struct work_struct *w) {}
387 struct work_struct *w;
390 [INIT_WORK_HAS_DATA],
391 [define if INIT_WORK takes a data (3rd) argument],
396 AC_DEFUN([LINUX_REGISTER_SYSCTL_TABLE_NOFLAG], [
397 AC_CHECK_LINUX_BUILD([whether register_sysctl_table has an insert_at_head argument],
398 [ac_cv_linux_register_sysctl_table_noflag],
399 [#include <linux/sysctl.h>],
400 [struct ctl_table *t; register_sysctl_table (t);],
401 [REGISTER_SYSCTL_TABLE_NOFLAG],
402 [define if register_sysctl_table has no insert_at head flag],
407 AC_DEFUN([LINUX_FOP_F_FLUSH_TAKES_FL_OWNER_T], [
408 AC_CHECK_LINUX_BUILD([whether file_operations.flush takes a fl_owner_t],
409 [ac_cv_linux_func_f_flush_takes_fl_owner_t],
410 [#include <linux/fs.h>],
411 [struct inode _inode;
414 (void)_inode.i_fop->flush(&_file, &id);],
415 [FOP_FLUSH_TAKES_FL_OWNER_T],
416 [define if your fops.flush takes an fl_owner_t argument],
421 AC_DEFUN([LINUX_FOP_F_FSYNC_TAKES_DENTRY], [
422 AC_CHECK_LINUX_BUILD([whether file_operations.fsync takes a dentry argument],
423 [ac_cv_linux_func_f_fsync_takes_dentry],
424 [#include <linux/fs.h>],
425 [struct inode _inode;
428 (void)_inode.i_fop->fsync(&_file, &_d, 0);],
429 [FOP_FSYNC_TAKES_DENTRY],
430 [define if your fops.fsync takes an dentry argument],
435 int (*fsync) (struct file *, loff_t start, loff_t end, int datasync);
437 AC_DEFUN([LINUX_FOP_F_FSYNC_TAKES_RANGE], [
438 AC_CHECK_LINUX_BUILD([whether file_operations.fsync takes a range],
439 [ac_cv_linux_func_f_fsync_takes_range],
440 [#include <linux/fs.h>],
441 [struct inode _inode;
444 (void)_inode.i_fop->fsync(&_file, start, end, 0);],
445 [FOP_FSYNC_TAKES_RANGE],
446 [define if your fops.fsync takes range arguments],
451 AC_DEFUN([LINUX_HAVE_KMEM_CACHE_T], [
452 AC_CHECK_LINUX_BUILD([whether kmem_cache_t exists],
453 [ac_cv_linux_have_kmem_cache_t],
454 [#include <linux/slab.h>],
457 [define if kmem_cache_t exists],
462 AC_DEFUN([LINUX_KMEM_CACHE_CREATE_TAKES_DTOR], [
463 AC_CHECK_LINUX_BUILD([whether kmem_cache_create takes a destructor argument],
464 [ac_cv_linux_kmem_cache_create_takes_dtor],
465 [#include <linux/slab.h>],
466 [kmem_cache_create(NULL, 0, 0, 0, NULL, NULL);],
467 [KMEM_CACHE_TAKES_DTOR],
468 [define if kmem_cache_create takes a destructor argument],
473 AC_DEFUN([LINUX_KMEM_CACHE_CREATE_CTOR_TAKES_VOID],[
474 AC_CHECK_LINUX_BUILD([whether kmem_cache_create constructor takes a void pointer],
475 [ac_cv_linux_kmem_cache_create_ctor_takes_void],
476 [#include <linux/slab.h>],
477 [void _ctor(void *v) { }; kmem_cache_create(NULL, 0, 0, 0, _ctor);],
478 [KMEM_CACHE_CTOR_TAKES_VOID],
479 [define if kmem_cache_create constructor takes a single void ptr],
484 dnl This function checks not just the existence of the splice functions,
485 dnl but also that the signature matches (they gained an extra argument
487 AC_DEFUN([LINUX_FS_STRUCT_FOP_HAS_SPLICE], [
488 AC_CHECK_LINUX_BUILD([for splice_write and splice_read in struct file_operations],
489 [ac_cv_linux_fs_struct_fop_has_splice],
490 [#include <linux/fs.h>],
491 [struct file_operations _fop;
492 _fop.splice_write(NULL, NULL, NULL, 0, 0);
493 _fop.splice_read(NULL, NULL, NULL, 0, 0);],
494 [STRUCT_FILE_OPERATIONS_HAS_SPLICE],
495 [define if struct file_operations has splice functions],
500 AC_DEFUN([LINUX_KMEM_CACHE_INIT], [
501 AC_CHECK_LINUX_BUILD([for new kmem_cache init function parameters],
502 [ac_cv_linux_kmem_cache_init],
503 [#include <linux/slab.h>],
504 [extern struct kmem_cache *
505 kmem_cache_create(const char *, size_t, size_t,
507 void (*)(struct kmem_cache *, void *));
510 [define for new kmem_cache init function parameters],
515 AC_DEFUN([LINUX_EXPORTS_PROC_ROOT_FS], [
516 AC_CHECK_LINUX_BUILD([if proc_root_fs is defined and exported],
517 [ac_cv_linux_exports_proc_root_fs],
518 [#include <linux/proc_fs.h>],
519 [struct proc_dir_entry *p = proc_root_fs;],
520 [EXPORTED_PROC_ROOT_FS],
521 [define if proc_root_fs is exported],
526 AC_DEFUN([LINUX_D_PATH_TAKES_STRUCT_PATH], [
527 AC_CHECK_LINUX_BUILD([if d_path() takes a struct path argument],
528 [ac_cv_linux_d_path_takes_struct_path],
529 [#include <linux/fs.h>],
530 [struct path *p; d_path(p, NULL, 0);],
531 [D_PATH_TAKES_STRUCT_PATH],
532 [define if d_path() takes a struct path argument],
537 AC_DEFUN([LINUX_NEW_EXPORT_OPS], [
538 AC_CHECK_LINUX_BUILD([if kernel uses new export ops],
539 [ac_cv_linux_new_export_ops],
540 [#include <linux/exportfs.h>],
541 [struct export_operations _eops;
542 _eops.fh_to_parent(NULL, NULL, 0, 0);],
544 [define if kernel uses new export ops],
549 AC_DEFUN([LINUX_POSIX_TEST_LOCK_RETURNS_CONFLICT], [
550 AC_CHECK_LINUX_BUILD([if posix_test_lock returns a struct file_lock],
551 [ac_cv_linux_posix_test_lock_returns_conflict],
552 [#include <linux/fs.h>],
553 [struct file_lock *lock;
555 lock = posix_test_lock(file, lock);],
556 [POSIX_TEST_LOCK_RETURNS_CONFLICT],
557 [define if posix_test_lock returns the conflicting lock],
562 AC_DEFUN([LINUX_POSIX_TEST_LOCK_CONFLICT_ARG], [
563 AC_CHECK_LINUX_BUILD([if posix_test_lock takes a conflict argument],
564 [ac_cv_linux_posix_test_lock_conflict_arg],
565 [#include <linux/fs.h>],
566 [struct file_lock *lock;
568 posix_test_lock(file, lock, lock);],
569 [POSIX_TEST_LOCK_CONFLICT_ARG],
570 [define if posix_test_lock takes a conflict argument],
575 AC_DEFUN([LINUX_EXPORTS_KEY_TYPE_KEYRING], [
576 AC_CHECK_LINUX_BUILD([for exported key_type_keyring],
577 [ac_cv_linux_exports_key_type_keyring],
579 #ifdef HAVE_LINUX_KEY_TYPE_H
580 #include <linux/key-type.h>
582 #include <linux/key.h>
584 [printk("%s", key_type_keyring.name);],
585 [EXPORTED_KEY_TYPE_KEYRING],
586 [define if key_type_keyring is exported],
591 AC_DEFUN([LINUX_HAVE_TRY_TO_FREEZE], [
592 AC_CHECK_LINUX_BUILD([for try_to_freeze],
593 [ac_cv_linux_have_try_to_freeze],
594 [#include <linux/sched.h>
595 #ifdef HAVE_LINUX_FREEZER_H
596 #include <linux/freezer.h>
598 [#ifdef LINUX_REFRIGERATOR_TAKES_PF_FREEZE
599 try_to_freeze(PF_FREEZE);
603 [HAVE_TRY_TO_FREEZE],
604 [define if your kernel has the try_to_freeze function],
609 AC_DEFUN([LINUX_HAVE_DCACHE_LOCK], [
610 AC_CHECK_LINUX_BUILD([for dcache_lock],
611 [ac_cv_linux_have_dcache_lock],
612 [#include <linux/fs.h> ],
613 [printk("%p", &dcache_lock);],
615 [define if dcache_lock exists],
620 AC_DEFUN([LINUX_D_COUNT_IS_INT], [
621 AC_CHECK_LINUX_BUILD([if dentry->d_count is an int],
622 [ac_cv_linux_d_count_int],
623 [#include <linux/fs.h> ],
628 [define if dentry->d_count is an int],
633 AC_DEFUN([LINUX_DOP_D_DELETE_TAKES_CONST], [
634 AC_CHECK_LINUX_BUILD([whether dentry.d_op->d_delete takes a const argument],
635 [ac_cv_linux_dop_d_delete_takes_const],
636 [#include <linux/fs.h>
637 #include <linux/dcache.h>
638 static int _d_del(const struct dentry *de) { return 0; }
639 struct dentry_operations _d_ops;],
640 [_d_ops.d_delete = _d_del;],
641 [DOP_D_DELETE_TAKES_CONST],
642 [define if dentry.d_op->d_delete takes a const argument],
646 AC_DEFUN([LINUX_IOP_GETATTR_TAKES_PATH_STRUCT], [
647 AC_CHECK_LINUX_BUILD([whether 4.11+ inode.i_op->getattr takes a struct path argument],
648 [ac_cv_linux_iop_getattr_takes_path_struct],
649 [#include <linux/fs.h>
650 int _getattr(const struct path *path, struct kstat *stat, u32 request_mask,
651 unsigned int sync_mode) {return 0;};
652 struct inode_operations _i_ops;],
653 [_i_ops.getattr = _getattr;],
654 [IOP_GETATTR_TAKES_PATH_STRUCT],
655 [define if 4.11+ inode.i_op->getattr takes a struct path argument],
659 AC_DEFUN([LINUX_IOP_MKDIR_TAKES_UMODE_T], [
660 AC_CHECK_LINUX_BUILD([whether inode.i_op->mkdir takes a umode_t argument],
661 [ac_cv_linux_iop_mkdir_takes_umode_t],
662 [#include <linux/fs.h>
663 static int _mkdir(struct inode *i, struct dentry *d, umode_t m) { return 0; }
664 struct inode_operations _i_ops;],
665 [_i_ops.mkdir = _mkdir;],
666 [IOP_MKDIR_TAKES_UMODE_T],
667 [define if inode.i_op->mkdir takes a umode_t argument],
672 AC_DEFUN([LINUX_IOP_CREATE_TAKES_UMODE_T], [
673 AC_CHECK_LINUX_BUILD([whether inode.i_op->create takes a umode_t argument],
674 [ac_cv_linux_iop_create_takes_umode_t],
675 [#include <linux/fs.h>],
676 [struct inode_operations _i_ops;
677 int _create(struct inode *i, struct dentry *d, umode_t m, struct nameidata *n)
679 _i_ops.create = _create;],
680 [IOP_CREATE_TAKES_UMODE_T],
681 [define if inode.i_op->create takes a umode_t argument],
686 AC_DEFUN([LINUX_EXPORT_OP_ENCODE_FH_TAKES_INODES], [
687 AC_CHECK_LINUX_BUILD([whether export operation encode_fh takes inode arguments],
688 [ac_cv_linux_export_op_encode_fh__takes_inodes],
689 [#include <linux/exportfs.h>
690 static int _encode_fh(struct inode *i, __u32 *fh, int *len, struct inode *p) { return 0; }
691 struct export_operations _exp_ops;],
692 [_exp_ops.encode_fh = _encode_fh;],
693 [EXPORT_OP_ENCODE_FH_TAKES_INODES],
694 [define if encode_fh export op takes inode arguments],
699 AC_DEFUN([LINUX_KMAP_ATOMIC_TAKES_NO_KM_TYPE], [
700 AC_CHECK_LINUX_BUILD([whether kmap_atomic takes no km_type argument],
701 [ac_cv_linux_kma_atomic_takes_no_km_type],
702 [#include <linux/highmem.h>],
703 [struct page *p = NULL;
705 [KMAP_ATOMIC_TAKES_NO_KM_TYPE],
706 [define if kmap_atomic takes no km_type argument],
711 AC_DEFUN([LINUX_DENTRY_OPEN_TAKES_PATH], [
712 AC_CHECK_LINUX_BUILD([whether dentry_open takes a path argument],
713 [ac_cv_linux_dentry_open_takes_path],
714 [#include <linux/fs.h>],
716 dentry_open(&p, 0, NULL);],
717 [DENTRY_OPEN_TAKES_PATH],
718 [define if dentry_open takes a path argument],
723 AC_DEFUN([LINUX_D_ALIAS_IS_HLIST], [
724 AC_CHECK_LINUX_BUILD([whether dentry->d_alias is an hlist],
725 [ac_cv_linux_d_alias_is_hlist],
726 [#include <linux/fs.h>],
727 [struct dentry *d = NULL;
728 struct hlist_node *hn = NULL;
729 #if defined(STRUCT_DENTRY_HAS_D_U_D_ALIAS)
730 d->d_u.d_alias = *hn;
735 [define if dentry->d_alias is an hlist],
740 AC_DEFUN([LINUX_HLIST_ITERATOR_NO_NODE], [
741 AC_CHECK_LINUX_BUILD([whether hlist iterators don't need a node parameter],
742 [ac_cv_linux_hlist_takes_no_node],
743 [#include <linux/list.h>
744 #include <linux/fs.h>],
745 [struct dentry *d = NULL, *cur;
747 #if defined(STRUCT_DENTRY_HAS_D_U_D_ALIAS)
748 # define d_alias d_u.d_alias
750 hlist_for_each_entry(cur, &ip->i_dentry, d_alias) { }
752 [HLIST_ITERATOR_NO_NODE],
753 [define if hlist iterators don't need a node parameter],
758 AC_DEFUN([LINUX_IOP_I_CREATE_TAKES_BOOL], [
759 AC_CHECK_LINUX_BUILD([whether inode_operations.create takes a bool],
760 [ac_cv_linux_func_i_create_takes_bool],
761 [#include <linux/fs.h>
762 #include <linux/namei.h>],
763 [struct inode _inode = {};
764 struct dentry _dentry;
766 (void)_inode.i_op->create(&_inode, &_dentry, 0, b);],
767 [IOP_CREATE_TAKES_BOOL],
768 [define if your iops.create takes a bool argument],
773 AC_DEFUN([LINUX_DOP_D_REVALIDATE_TAKES_UNSIGNED], [
774 AC_CHECK_LINUX_BUILD([whether dentry_operations.d_revalidate takes an unsigned int],
775 [ac_cv_linux_func_d_revalidate_takes_unsigned],
776 [#include <linux/fs.h>
777 #include <linux/namei.h>
778 static int reval(struct dentry *d, unsigned int i) { return 0; }
779 struct dentry_operations _d_ops;],
780 [_d_ops.d_revalidate = reval;],
781 [DOP_REVALIDATE_TAKES_UNSIGNED],
782 [define if your dops.d_revalidate takes an unsigned int argument],
787 AC_DEFUN([LINUX_IOP_LOOKUP_TAKES_UNSIGNED], [
788 AC_CHECK_LINUX_BUILD([whether inode operation lookup takes an unsigned int],
789 [ac_cv_linux_func_lookup_takes_unsigned],
790 [#include <linux/fs.h>
791 #include <linux/namei.h>
792 static struct dentry *look(struct inode *i, struct dentry *d, unsigned int j) { return NULL; }
793 struct inode_operations _i_ops;],
794 [_i_ops.lookup = look;],
795 [IOP_LOOKUP_TAKES_UNSIGNED],
796 [define if your iops.lookup takes an unsigned int argument],
801 AC_DEFUN([LINUX_D_INVALIDATE_IS_VOID], [
802 AC_CHECK_LINUX_BUILD([whether d_invalidate returns void],
803 [ac_cv_linux_func_d_invalidate_returns_void],
804 [#include <linux/fs.h>],
806 void d_invalidate(struct dentry *);
808 [D_INVALIDATE_IS_VOID],
809 [define if your d_invalidate returns void],
813 AC_DEFUN([LINUX_KERNEL_READ_OFFSET_IS_LAST], [
814 AC_CHECK_LINUX_BUILD([whether offset is the last argument to kernel_read],
815 [ac_cv_linux_func_kernel_read_offset_is_last],
816 [#include <linux/fs.h>],
818 ssize_t kernel_read(struct file *, void *, size_t, loff_t *);
820 [KERNEL_READ_OFFSET_IS_LAST],
821 [define if your kernel_read has offset as the last argument],