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