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 _TIME_T
69 #define _TIME_T
70 typedef __kernel_time_t time_t;
71 #endif
72
73 #ifndef _CLOCK_T
74 #define _CLOCK_T
75 typedef __kernel_clock_t clock_t;
76 #endif
77
78 #ifndef _CADDR_T
79 #define _CADDR_T
80 typedef __kernel_caddr_t caddr_t;
81 #endif
82
83 /* bsd */
84 typedef unsigned char u_char;
85 typedef unsigned short u_short;
86 typedef unsigned int u_int;
87 typedef unsigned long u_long;
88
89 /* sysv */
90 typedef unsigned char unchar;
91 typedef unsigned short ushort;
92 typedef unsigned int uint;
93 typedef unsigned long ulong;
94
95 #ifndef __BIT_TYPES_DEFINED__
96 #define __BIT_TYPES_DEFINED__
97
98 typedef __u8 u_int8_t;
99 typedef __s8 int8_t;
100 typedef __u16 u_int16_t;
101 typedef __s16 int16_t;
102 typedef __u32 u_int32_t;
103 typedef __s32 int32_t;
104
105 #endif /* !(__BIT_TYPES_DEFINED__) */
106
107 typedef __u8 uint8_t;
108 typedef __u16 uint16_t;
109 typedef __u32 uint32_t;
110
111 #if defined(__GNUC__)
112 typedef __u64 uint64_t;
113 typedef __u64 u_int64_t;
114 typedef __s64 int64_t;
115 #endif
116
117 /* this is a special 64bit data type that is 8-byte aligned */
118 #define aligned_u64 __u64 __attribute__((aligned(8)))
119 #define aligned_be64 __be64 __attribute__((aligned(8)))
120 #define aligned_le64 __le64 __attribute__((aligned(8)))
121
122 /**
123 * The type used for indexing onto a disc or disc partition.
124 *
125 * Linux always considers sectors to be 512 bytes long independently
126 * of the devices real block size.
127 *
128 * blkcnt_t is the type of the inode's block count.
129 */
130 #ifdef CONFIG_LBDAF
131 typedef u64 sector_t;
132 typedef u64 blkcnt_t;
133 #else
134 typedef unsigned long sector_t;
135 typedef unsigned long blkcnt_t;
136 #endif
137
138 /*
139 * The type of an index into the pagecache.
140 */
141 #define pgoff_t unsigned long
142
143 /*
144 * A dma_addr_t can hold any valid DMA address, i.e., any address returned
145 * by the DMA API.
146 *
147 * If the DMA API only uses 32-bit addresses, dma_addr_t need only be 32
148 * bits wide. Bus addresses, e.g., PCI BARs, may be wider than 32 bits,
149 * but drivers do memory-mapped I/O to ioremapped kernel virtual addresses,
150 * so they don't care about the size of the actual bus addresses.
151 */
152 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
153 typedef u64 dma_addr_t;
154 #else
155 typedef u32 dma_addr_t;
156 #endif
157
158 typedef unsigned __bitwise gfp_t;
159 typedef unsigned __bitwise slab_flags_t;
160 typedef unsigned __bitwise fmode_t;
161
162 #ifdef CONFIG_PHYS_ADDR_T_64BIT
163 typedef u64 phys_addr_t;
164 #else
165 typedef u32 phys_addr_t;
166 #endif
167
168 typedef phys_addr_t resource_size_t;
169
170 /*
171 * This type is the placeholder for a hardware interrupt number. It has to be
172 * big enough to enclose whatever representation is used by a given platform.
173 */
174 typedef unsigned long irq_hw_number_t;
175
176 typedef struct {
177 int counter;
178 } atomic_t;
179
180 #ifdef CONFIG_64BIT
181 typedef struct {
182 long counter;
183 } atomic64_t;
184 #endif
185
186 struct list_head {
187 struct list_head *next, *prev;
188 };
189
190 struct hlist_head {
191 struct hlist_node *first;
192 };
193
194 struct hlist_node {
195 struct hlist_node *next, **pprev;
196 };
197
198 struct ustat {
199 __kernel_daddr_t f_tfree;
200 __kernel_ino_t f_tinode;
201 char f_fname[6];
202 char f_fpack[6];
203 };
204
205 /**
206 * struct callback_head - callback structure for use with RCU and task_work
207 * @next: next update requests in a list
208 * @func: actual update function to call after the grace period.
209 *
210 * The struct is aligned to size of pointer. On most architectures it happens
211 * naturally due ABI requirements, but some architectures (like CRIS) have
212 * weird ABI and we need to ask it explicitly.
213 *
214 * The alignment is required to guarantee that bit 0 of @next will be
215 * clear under normal conditions -- as long as we use call_rcu(),
216 * call_rcu_bh(), call_rcu_sched(), or call_srcu() to queue callback.
217 *
218 * This guarantee is important for few reasons:
219 * - future call_rcu_lazy() will make use of lower bits in the pointer;
220 * - the structure shares storage spacer in struct page with @compound_head,
221 * which encode PageTail() in bit 0. The guarantee is needed to avoid
222 * false-positive PageTail().
223 */
224 struct callback_head {
225 struct callback_head *next;
226 void (*func)(struct callback_head *head);
227 } __attribute__((aligned(sizeof(void *))));
228 #define rcu_head callback_head
229
230 typedef void (*rcu_callback_t)(struct rcu_head *head);
231 typedef void (*call_rcu_func_t)(struct rcu_head *head, rcu_callback_t func);
232
233 #endif /* __ASSEMBLY__ */
234 #endif /* _LINUX_TYPES_H */
235
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