aboutsummaryrefslogtreecommitdiffstats
path: root/tools/testing/selftests/bpf/progs/core_reloc_types.h
blob: 9311489e14b2b4169e9f4a08c465e216500e7fba (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
#include <stdint.h>
#include <stdbool.h>
/*
 * KERNEL
 */

struct core_reloc_kernel_output {
	int valid[10];
	char comm[sizeof("test_progs")];
	int comm_len;
};

/*
 * FLAVORS
 */
struct core_reloc_flavors {
	int a;
	int b;
	int c;
};

/* this is not a flavor, as it doesn't have triple underscore */
struct core_reloc_flavors__err_wrong_name {
	int a;
	int b;
	int c;
};

/*
 * NESTING
 */
/* original set up, used to record relocations in BPF program */
struct core_reloc_nesting_substruct {
	int a;
};

union core_reloc_nesting_subunion {
	int b;
};

struct core_reloc_nesting {
	union {
		struct core_reloc_nesting_substruct a;
	} a;
	struct {
		union core_reloc_nesting_subunion b;
	} b;
};

/* inlined anonymous struct/union instead of named structs in original */
struct core_reloc_nesting___anon_embed {
	int __just_for_padding;
	union {
		struct {
			int a;
		} a;
	} a;
	struct {
		union {
			int b;
		} b;
	} b;
};

/* different mix of nested structs/unions than in original */
struct core_reloc_nesting___struct_union_mixup {
	int __a;
	struct {
		int __a;
		union {
			char __a;
			int a;
		} a;
	} a;
	int __b;
	union {
		int __b;
		union {
			char __b;
			int b;
		} b;
	} b;
};

/* extra anon structs/unions, but still valid a.a.a and b.b.b accessors */
struct core_reloc_nesting___extra_nesting {
	int __padding;
	struct {
		struct {
			struct {
				struct {
					union {
						int a;
					} a;
				};
			};
		} a;
		int __some_more;
		struct {
			union {
				union {
					union {
						struct {
							int b;
						};
					} b;
				};
			} b;
		};
	};
};

/* three flavors of same struct with different structure but same layout for
 * a.a.a and b.b.b, thus successfully resolved and relocatable */
struct core_reloc_nesting___dup_compat_types {
	char __just_for_padding;
	/* 3 more bytes of padding */
	struct {
		struct {
			int a; /* offset 4 */
		} a;
	} a;
	long long __more_padding;
	struct {
		struct {
			int b; /* offset 16 */
		} b;
	} b;
};

struct core_reloc_nesting___dup_compat_types__2 {
	int __aligned_padding;
	struct {
		int __trickier_noop[0];
		struct {
			char __some_more_noops[0];
			int a; /* offset 4 */
		} a;
	} a;
	int __more_padding;
	struct {
		struct {
			struct {
				int __critical_padding;
				int b; /* offset 16 */
			} b;
			int __does_not_matter;
		};
	} b;
	int __more_irrelevant_stuff;
};

struct core_reloc_nesting___dup_compat_types__3 {
	char __correct_padding[4];
	struct {
		struct {
			int a; /* offset 4 */
		} a;
	} a;
	/* 8 byte padding due to next struct's alignment */
	struct {
		struct {
			int b;
		} b;
	} b __attribute__((aligned(16)));
};

/* b.b.b field is missing */
struct core_reloc_nesting___err_missing_field {
	struct {
		struct {
			int a;
		} a;
	} a;
	struct {
		struct {
			int x;
		} b;
	} b;
};

/* b.b.b field is an array of integers instead of plain int */
struct core_reloc_nesting___err_array_field {
	struct {
		struct {
			int a;
		} a;
	} a;
	struct {
		struct {
			int b[1];
		} b;
	} b;
};

/* middle b container is missing */
struct core_reloc_nesting___err_missing_container {
	struct {
		struct {
			int a;
		} a;
	} a;
	struct {
		int x;
	} b;
};

/* middle b container is referenced through pointer instead of being embedded */
struct core_reloc_nesting___err_nonstruct_container {
	struct {
		struct {
			int a;
		} a;
	} a;
	struct {
		struct {
			int b;
		} *b;
	} b;
};

/* middle b container is an array of structs instead of plain struct */
struct core_reloc_nesting___err_array_container {
	struct {
		struct {
			int a;
		} a;
	} a;
	struct {
		struct {
			int b;
		} b[1];
	} b;
};

/* two flavors of same struct with incompatible layout for b.b.b */
struct core_reloc_nesting___err_dup_incompat_types__1 {
	struct {
		struct {
			int a; /* offset 0 */
		} a;
	} a;
	struct {
		struct {
			int b; /* offset 4 */
		} b;
	} b;
};

struct core_reloc_nesting___err_dup_incompat_types__2 {
	struct {
		struct {
			int a; /* offset 0 */
		} a;
	} a;
	int __extra_padding;
	struct {
		struct {
			int b; /* offset 8 (!) */
		} b;
	} b;
};

/* two flavors of same struct having one of a.a.a and b.b.b, but not both */
struct core_reloc_nesting___err_partial_match_dups__a {
	struct {
		struct {
			int a;
		} a;
	} a;
};

struct core_reloc_nesting___err_partial_match_dups__b {
	struct {
		struct {
			int b;
		} b;
	} b;
};

struct core_reloc_nesting___err_too_deep {
	struct {
		struct {
			int a;
		} a;
	} a;
	/* 65 levels of nestedness for b.b.b */
	struct {
		struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
			struct { struct { struct { struct { struct {
				/* this one is one too much */
				struct {
					int b;
				};
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
			}; }; }; }; };
		} b;
	} b;
};

/*
 * ARRAYS
 */
struct core_reloc_arrays_output {
	int a2;
	char b123;
	int c1c;
	int d00d;
};

struct core_reloc_arrays_substruct {
	int c;
	int d;
};

struct core_reloc_arrays {
	int a[5];
	char b[2][3][4];
	struct core_reloc_arrays_substruct c[3];
	struct core_reloc_arrays_substruct d[1][2];
};

/* bigger array dimensions */
struct core_reloc_arrays___diff_arr_dim {
	int a[7];
	char b[3][4][5];
	struct core_reloc_arrays_substruct c[4];
	struct core_reloc_arrays_substruct d[2][3];
};

/* different size of array's value (struct) */
struct core_reloc_arrays___diff_arr_val_sz {
	int a[5];
	char b[2][3][4];
	struct {
		int __padding1;
		int c;
		int __padding2;
	} c[3];
	struct {
		int __padding1;
		int d;
		int __padding2;
	} d[1][2];
};

struct core_reloc_arrays___err_too_small {
	int a[2]; /* this one is too small */
	char b[2][3][4];
	struct core_reloc_arrays_substruct c[3];
	struct core_reloc_arrays_substruct d[1][2];
};

struct core_reloc_arrays___err_too_shallow {
	int a[5];
	char b[2][3]; /* this one lacks one dimension */
	struct core_reloc_arrays_substruct c[3];
	struct core_reloc_arrays_substruct d[1][2];
};

struct core_reloc_arrays___err_non_array {
	int a; /* not an array */
	char b[2][3][4];
	struct core_reloc_arrays_substruct c[3];
	struct core_reloc_arrays_substruct d[1][2];
};

struct core_reloc_arrays___err_wrong_val_type {
	int a[5];
	char b[2][3][4];
	int c[3]; /* value is not a struct */
	struct core_reloc_arrays_substruct d[1][2];
};

/*
 * PRIMITIVES
 */
enum core_reloc_primitives_enum {
	A = 0,
	B = 1,
};

struct core_reloc_primitives {
	char a;
	int b;
	enum core_reloc_primitives_enum c;
	void *d;
	int (*f)(const char *);
};

struct core_reloc_primitives___diff_enum_def {
	char a;
	int b;
	void *d;
	int (*f)(const char *);
	enum {
		X = 100,
		Y = 200,
	} c; /* inline enum def with differing set of values */
};

struct core_reloc_primitives___diff_func_proto {
	void (*f)(int); /* incompatible function prototype */
	void *d;
	enum core_reloc_primitives_enum c;
	int b;
	char a;
};

struct core_reloc_primitives___diff_ptr_type {
	const char * const d; /* different pointee type + modifiers */
	char a;
	int b;
	enum core_reloc_primitives_enum c;
	int (*f)(const char *);
};

struct core_reloc_primitives___err_non_enum {
	char a[1];
	int b;
	int c; /* int instead of enum */
	void *d;
	int (*f)(const char *);
};

struct core_reloc_primitives___err_non_int {
	char a[1];
	int *b; /* ptr instead of int */
	enum core_reloc_primitives_enum c;
	void *d;
	int (*f)(const char *);
};

struct core_reloc_primitives___err_non_ptr {
	char a[1];
	int b;
	enum core_reloc_primitives_enum c;
	int d; /* int instead of ptr */
	int (*f)(const char *);
};

/*
 * MODS
 */
struct core_reloc_mods_output {
	int a, b, c, d, e, f, g, h;
};

typedef const int int_t;
typedef const char *char_ptr_t;
typedef const int arr_t[7];

struct core_reloc_mods_substruct {
	int x;
	int y;
};

typedef struct {
	int x;
	int y;
} core_reloc_mods_substruct_t;

struct core_reloc_mods {
	int a;
	int_t b;
	char *c;
	char_ptr_t d;
	int e[3];
	arr_t f;
	struct core_reloc_mods_substruct g;
	core_reloc_mods_substruct_t h;
};

/* a/b, c/d, e/f, and g/h pairs are swapped */
struct core_reloc_mods___mod_swap {
	int b;
	int_t a;
	char *d;
	char_ptr_t c;
	int f[3];
	arr_t e;
	struct {
		int y;
		int x;
	} h;
	core_reloc_mods_substruct_t g;
};

typedef int int1_t;
typedef int1_t int2_t;
typedef int2_t int3_t;

typedef int arr1_t[5];
typedef arr1_t arr2_t;
typedef arr2_t arr3_t;
typedef arr3_t arr4_t;

typedef const char * const volatile fancy_char_ptr_t;

typedef core_reloc_mods_substruct_t core_reloc_mods_substruct_tt;

/* we need more typedefs */
struct core_reloc_mods___typedefs {
	core_reloc_mods_substruct_tt g;
	core_reloc_mods_substruct_tt h;
	arr4_t f;
	arr4_t e;
	fancy_char_ptr_t d;
	fancy_char_ptr_t c;
	int3_t b;
	int3_t a;
};

/*
 * PTR_AS_ARR
 */
struct core_reloc_ptr_as_arr {
	int a;
};

struct core_reloc_ptr_as_arr___diff_sz {
	int :32; /* padding */
	char __some_more_padding;
	int a;
};

/*
 * INTS
 */
struct core_reloc_ints {
	uint8_t		u8_field;
	int8_t		s8_field;
	uint16_t	u16_field;
	int16_t		s16_field;
	uint32_t	u32_field;
	int32_t		s32_field;
	uint64_t	u64_field;
	int64_t		s64_field;
};

/* signed/unsigned types swap */
struct core_reloc_ints___reverse_sign {
	int8_t		u8_field;
	uint8_t		s8_field;
	int16_t		u16_field;
	uint16_t	s16_field;
	int32_t		u32_field;
	uint32_t	s32_field;
	int64_t		u64_field;
	uint64_t	s64_field;
};

struct core_reloc_ints___bool {
	bool		u8_field; /* bool instead of uint8 */
	int8_t		s8_field;
	uint16_t	u16_field;
	int16_t		s16_field;
	uint32_t	u32_field;
	int32_t		s32_field;
	uint64_t	u64_field;
	int64_t		s64_field;
};

/*
 * MISC
 */
struct core_reloc_misc_output {
	int a, b, c;
};

struct core_reloc_misc___a {
	int a1;
	int a2;
};

struct core_reloc_misc___b {
	int b1;
	int b2;
};

/* this one extends core_reloc_misc_extensible struct from BPF prog */
struct core_reloc_misc_extensible {
	int a;
	int b;
	int c;
	int d;
};

/*
 * EXISTENCE
 */
struct core_reloc_existence_output {
	int a_exists;
	int a_value;
	int b_exists;
	int b_value;
	int c_exists;
	int c_value;
	int arr_exists;
	int arr_value;
	int s_exists;
	int s_value;
};

struct core_reloc_existence {
	int a;
	struct {
		int b;
	};
	int c;
	int arr[1];
	struct {
		int x;
	} s;
};

struct core_reloc_existence___minimal {
	int a;
};

struct core_reloc_existence___err_wrong_int_sz {
	short a;
};

struct core_reloc_existence___err_wrong_int_type {
	int b[1];
};

struct core_reloc_existence___err_wrong_int_kind {
	struct{ int x; } c;
};

struct core_reloc_existence___err_wrong_arr_kind {
	int arr;
};

struct core_reloc_existence___err_wrong_arr_value_type {
	short arr[1];
};

struct core_reloc_existence___err_wrong_struct_type {
	int s;
};

/*
 * BITFIELDS
 */
/* bitfield read results, all as plain integers */
struct core_reloc_bitfields_output {
	int64_t		ub1;
	int64_t		ub2;
	int64_t		ub7;
	int64_t		sb4;
	int64_t		sb20;
	int64_t		u32;
	int64_t		s32;
};

struct core_reloc_bitfields {
	/* unsigned bitfields */
	uint8_t		ub1: 1;
	uint8_t		ub2: 2;
	uint32_t	ub7: 7;
	/* signed bitfields */
	int8_t		sb4: 4;
	int32_t		sb20: 20;
	/* non-bitfields */
	uint32_t	u32;
	int32_t		s32;
};

/* different bit sizes (both up and down) */
struct core_reloc_bitfields___bit_sz_change {
	/* unsigned bitfields */
	uint16_t	ub1: 3;		/*  1 ->  3 */
	uint32_t	ub2: 20;	/*  2 -> 20 */
	uint8_t		ub7: 1;		/*  7 ->  1 */
	/* signed bitfields */
	int8_t		sb4: 1;		/*  4 ->  1 */
	int32_t		sb20: 30;	/* 20 -> 30 */
	/* non-bitfields */
	uint16_t	u32;		/* 32 -> 16 */
	int64_t		s32;		/* 32 -> 64 */
};

/* turn bitfield into non-bitfield and vice versa */
struct core_reloc_bitfields___bitfield_vs_int {
	uint64_t	ub1;		/*  3 -> 64 non-bitfield */
	uint8_t		ub2;		/* 20 ->  8 non-bitfield */
	int64_t		ub7;		/*  7 -> 64 non-bitfield signed */
	int64_t		sb4;		/*  4 -> 64 non-bitfield signed */
	uint64_t	sb20;		/* 20 -> 16 non-bitfield unsigned */
	int32_t		u32: 20;	/* 32 non-bitfield -> 20 bitfield */
	uint64_t	s32: 60;	/* 32 non-bitfield -> 60 bitfield */
};

struct core_reloc_bitfields___just_big_enough {
	uint64_t	ub1: 4;
	uint64_t	ub2: 60; /* packed tightly */
	uint32_t	ub7;
	uint32_t	sb4;
	uint32_t	sb20;
	uint32_t	u32;
	uint32_t	s32;
} __attribute__((packed)) ;

struct core_reloc_bitfields___err_too_big_bitfield {
	uint64_t	ub1: 4;
	uint64_t	ub2: 61; /* packed tightly */
	uint32_t	ub7;
	uint32_t	sb4;
	uint32_t	sb20;
	uint32_t	u32;
	uint32_t	s32;
} __attribute__((packed)) ;

/*
 * SIZE
 */
struct core_reloc_size_output {
	int int_sz;
	int struct_sz;
	int union_sz;
	int arr_sz;
	int arr_elem_sz;
	int ptr_sz;
	int enum_sz;
};

struct core_reloc_size {
	int int_field;
	struct { int x; } struct_field;
	union { int x; } union_field;
	int arr_field[4];
	void *ptr_field;
	enum { VALUE = 123 } enum_field;
};

struct core_reloc_size___diff_sz {
	uint64_t int_field;
	struct { int x; int y; int z; } struct_field;
	union { int x; char bla[123]; } union_field;
	char arr_field[10];
	void *ptr_field;
	enum { OTHER_VALUE = 0xFFFFFFFFFFFFFFFF } enum_field;
};