1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_TYPES_H
3 #define _LINUX_TYPES_H
4
5 #define __EXPORTED_HEADERS__
6 #include <uapi/linux/types.h>
7
8 #ifndef __ASSEMBLY__
9
10 #define DECLARE_BITMAP(name,bits) \
11 unsigned long name[BITS_TO_LONGS(bits)]
12
13 #ifdef __SIZEOF_INT128__
14 typedef __s128 s128;
15 typedef __u128 u128;
16 #endif
17
18 typedef u32 __kernel_dev_t;
19
20 typedef __kernel_fd_set fd_set;
21 typedef __kernel_dev_t dev_t;
22 typedef __kernel_ulong_t ino_t;
23 typedef __kernel_mode_t mode_t;
24 typedef unsigned short umode_t;
25 typedef u32 nlink_t;
26 typedef __kernel_off_t off_t;
27 typedef __kernel_pid_t pid_t;
28 typedef __kernel_daddr_t daddr_t;
29 typedef __kernel_key_t key_t;
30 typedef __kernel_suseconds_t suseconds_t;
31 typedef __kernel_timer_t timer_t;
32 typedef __kernel_clockid_t clockid_t;
33 typedef __kernel_mqd_t mqd_t;
34
35 typedef _Bool bool;
36
37 typedef __kernel_uid32_t uid_t;
38 typedef __kernel_gid32_t gid_t;
39 typedef __kernel_uid16_t uid16_t;
40 typedef __kernel_gid16_t gid16_t;
41
42 typedef unsigned long uintptr_t;
43 typedef long intptr_t;
44
45 #ifdef CONFIG_HAVE_UID16
46 /* This is defined by include/asm-{arch}/posix_types.h */
47 typedef __kernel_old_uid_t old_uid_t;
48 typedef __kernel_old_gid_t old_gid_t;
49 #endif /* CONFIG_UID16 */
50
51 #if defined(__GNUC__)
52 typedef __kernel_loff_t loff_t;
53 #endif
54
55 /*
56 * The following typedefs are also protected by individual ifdefs for
57 * historical reasons:
58 */
59 #ifndef _SIZE_T
60 #define _SIZE_T
61 typedef __kernel_size_t size_t;
62 #endif
63
64 #ifndef _SSIZE_T
65 #define _SSIZE_T
66 typedef __kernel_ssize_t ssize_t;
67 #endif
68
69 #ifndef _PTRDIFF_T
70 #define _PTRDIFF_T
71 typedef __kernel_ptrdiff_t ptrdiff_t;
72 #endif
73
74 #ifndef _CLOCK_T
75 #define _CLOCK_T
76 typedef __kernel_clock_t clock_t;
77 #endif
78
79 #ifndef _CADDR_T
80 #define _CADDR_T
81 typedef __kernel_caddr_t caddr_t;
82 #endif
83
84 /* bsd */
85 typedef unsigned char u_char;
86 typedef unsigned short u_short;
87 typedef unsigned int u_int;
88 typedef unsigned long u_long;
89
90 /* sysv */
91 typedef unsigned char unchar;
92 typedef unsigned short ushort;
93 typedef unsigned int uint;
94 typedef unsigned long ulong;
95
96 #ifndef __BIT_TYPES_DEFINED__
97 #define __BIT_TYPES_DEFINED__
98
99 typedef u8 u_int8_t;
100 typedef s8 int8_t;
101 typedef u16 u_int16_t;
102 typedef s16 int16_t;
103 typedef u32 u_int32_t;
104 typedef s32 int32_t;
105
106 #endif /* !(__BIT_TYPES_DEFINED__) */
107
108 typedef u8 uint8_t;
109 typedef u16 uint16_t;
110 typedef u32 uint32_t;
111
112 #if defined(__GNUC__)
113 typedef u64 uint64_t;
114 typedef u64 u_int64_t;
115 typedef s64 int64_t;
116 #endif
117
118 /* this is a special 64bit data type that is 8-byte aligned */
119 #define aligned_u64 __aligned_u64
120 #define aligned_be64 __aligned_be64
121 #define aligned_le64 __aligned_le64
122
123 /* Nanosecond scalar representation for kernel time values */
124 typedef s64 ktime_t;
125
126 /**
127 * The type used for indexing onto a disc or disc partition.
128 *
129 * Linux always considers sectors to be 512 bytes long independently
130 * of the devices real block size.
131 *
132 * blkcnt_t is the type of the inode's block count.
133 */
134 typedef u64 sector_t;
135 typedef u64 blkcnt_t;
136
137 /*
138 * The type of an index into the pagecache.
139 */
140 #define pgoff_t unsigned long
141
142 /*
143 * A dma_addr_t can hold any valid DMA address, i.e., any address returned
144 * by the DMA API.
145 *
146 * If the DMA API only uses 32-bit addresses, dma_addr_t need only be 32
147 * bits wide. Bus addresses, e.g., PCI BARs, may be wider than 32 bits,
148 * but drivers do memory-mapped I/O to ioremapped kernel virtual addresses,
149 * so they don't care about the size of the actual bus addresses.
150 */
151 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
152 typedef u64 dma_addr_t;
153 #else
154 typedef u32 dma_addr_t;
155 #endif
156
157 typedef unsigned int __bitwise gfp_t;
158 typedef unsigned int __bitwise slab_flags_t;
159 typedef unsigned int __bitwise fmode_t;
160
161 #ifdef CONFIG_PHYS_ADDR_T_64BIT
162 typedef u64 phys_addr_t;
163 #else
164 typedef u32 phys_addr_t;
165 #endif
166
167 typedef phys_addr_t resource_size_t;
168
169 /*
170 * This type is the placeholder for a hardware interrupt number. It has to be
171 * big enough to enclose whatever representation is used by a given platform.
172 */
173 typedef unsigned long irq_hw_number_t;
174
175 typedef struct {
176 int counter;
177 } atomic_t;
178
179 #define ATOMIC_INIT(i) { (i) }
180
181 #ifdef CONFIG_64BIT
182 typedef struct {
183 s64 counter;
184 } atomic64_t;
185 #endif
186
187 typedef struct {
188 atomic_t refcnt;
189 } rcuref_t;
190
191 #define RCUREF_INIT(i) { .refcnt = ATOMIC_INIT(i - 1) }
192
193 struct list_head {
194 struct list_head *next, *prev;
195 };
196
197 struct hlist_head {
198 struct hlist_node *first;
199 };
200
201 struct hlist_node {
202 struct hlist_node *next, **pprev;
203 };
204
205 struct ustat {
206 __kernel_daddr_t f_tfree;
207 #ifdef CONFIG_ARCH_32BIT_USTAT_F_TINODE
208 unsigned int f_tinode;
209 #else
210 unsigned long f_tinode;
211 #endif
212 char f_fname[6];
213 char f_fpack[6];
214 };
215
216 /**
217 * struct callback_head - callback structure for use with RCU and task_work
218 * @next: next update requests in a list
219 * @func: actual update function to call after the grace period.
220 *
221 * The struct is aligned to size of pointer. On most architectures it happens
222 * naturally due ABI requirements, but some architectures (like CRIS) have
223 * weird ABI and we need to ask it explicitly.
224 *
225 * The alignment is required to guarantee that bit 0 of @next will be
226 * clear under normal conditions -- as long as we use call_rcu() or
227 * call_srcu() to queue the callback.
228 *
229 * This guarantee is important for few reasons:
230 * - future call_rcu_lazy() will make use of lower bits in the pointer;
231 * - the structure shares storage space in struct page with @compound_head,
232 * which encode PageTail() in bit 0. The guarantee is needed to avoid
233 * false-positive PageTail().
234 */
235 struct callback_head {
236 struct callback_head *next;
237 void (*func)(struct callback_head *head);
238 } __attribute__((aligned(sizeof(void *))));
239 #define rcu_head callback_head
240
241 typedef void (*rcu_callback_t)(struct rcu_head *head);
242 typedef void (*call_rcu_func_t)(struct rcu_head *head, rcu_callback_t func);
243
244 typedef void (*swap_r_func_t)(void *a, void *b, int size, const void *priv);
245 typedef void (*swap_func_t)(void *a, void *b, int size);
246
247 typedef int (*cmp_r_func_t)(const void *a, const void *b, const void *priv);
248 typedef int (*cmp_func_t)(const void *a, const void *b);
249
250 #endif /* __ASSEMBLY__ */
251 #endif /* _LINUX_TYPES_H */
252
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.