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 /**
124  * The type used for indexing onto a disc or disc partition.
125  *
126  * Linux always considers sectors to be 512 bytes long independently
127  * of the devices real block size.
128  *
129  * blkcnt_t is the type of the inode's block count.
130  */
131 typedef u64 sector_t;
132 typedef u64 blkcnt_t;
133 
134 /*
135  * The type of an index into the pagecache.
136  */
137 #define pgoff_t unsigned long
138 
139 /*
140  * A dma_addr_t can hold any valid DMA address, i.e., any address returned
141  * by the DMA API.
142  *
143  * If the DMA API only uses 32-bit addresses, dma_addr_t need only be 32
144  * bits wide.  Bus addresses, e.g., PCI BARs, may be wider than 32 bits,
145  * but drivers do memory-mapped I/O to ioremapped kernel virtual addresses,
146  * so they don't care about the size of the actual bus addresses.
147  */
148 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
149 typedef u64 dma_addr_t;
150 #else
151 typedef u32 dma_addr_t;
152 #endif
153 
154 typedef unsigned int __bitwise gfp_t;
155 typedef unsigned int __bitwise slab_flags_t;
156 typedef unsigned int __bitwise fmode_t;
157 
158 #ifdef CONFIG_PHYS_ADDR_T_64BIT
159 typedef u64 phys_addr_t;
160 #else
161 typedef u32 phys_addr_t;
162 #endif
163 
164 typedef phys_addr_t resource_size_t;
165 
166 /*
167  * This type is the placeholder for a hardware interrupt number. It has to be
168  * big enough to enclose whatever representation is used by a given platform.
169  */
170 typedef unsigned long irq_hw_number_t;
171 
172 typedef struct {
173 	int counter;
174 } atomic_t;
175 
176 #define ATOMIC_INIT(i) { (i) }
177 
178 #ifdef CONFIG_64BIT
179 typedef struct {
180 	s64 counter;
181 } atomic64_t;
182 #endif
183 
184 typedef struct {
185 	atomic_t refcnt;
186 } rcuref_t;
187 
188 #define RCUREF_INIT(i)	{ .refcnt = ATOMIC_INIT(i - 1) }
189 
190 struct list_head {
191 	struct list_head *next, *prev;
192 };
193 
194 struct hlist_head {
195 	struct hlist_node *first;
196 };
197 
198 struct hlist_node {
199 	struct hlist_node *next, **pprev;
200 };
201 
202 struct ustat {
203 	__kernel_daddr_t	f_tfree;
204 #ifdef CONFIG_ARCH_32BIT_USTAT_F_TINODE
205 	unsigned int		f_tinode;
206 #else
207 	unsigned long		f_tinode;
208 #endif
209 	char			f_fname[6];
210 	char			f_fpack[6];
211 };
212 
213 /**
214  * struct callback_head - callback structure for use with RCU and task_work
215  * @next: next update requests in a list
216  * @func: actual update function to call after the grace period.
217  *
218  * The struct is aligned to size of pointer. On most architectures it happens
219  * naturally due ABI requirements, but some architectures (like CRIS) have
220  * weird ABI and we need to ask it explicitly.
221  *
222  * The alignment is required to guarantee that bit 0 of @next will be
223  * clear under normal conditions -- as long as we use call_rcu() or
224  * call_srcu() to queue the callback.
225  *
226  * This guarantee is important for few reasons:
227  *  - future call_rcu_lazy() will make use of lower bits in the pointer;
228  *  - the structure shares storage space in struct page with @compound_head,
229  *    which encode PageTail() in bit 0. The guarantee is needed to avoid
230  *    false-positive PageTail().
231  */
232 struct callback_head {
233 	struct callback_head *next;
234 	void (*func)(struct callback_head *head);
235 } __attribute__((aligned(sizeof(void *))));
236 #define rcu_head callback_head
237 
238 typedef void (*rcu_callback_t)(struct rcu_head *head);
239 typedef void (*call_rcu_func_t)(struct rcu_head *head, rcu_callback_t func);
240 
241 typedef void (*swap_r_func_t)(void *a, void *b, int size, const void *priv);
242 typedef void (*swap_func_t)(void *a, void *b, int size);
243 
244 typedef int (*cmp_r_func_t)(const void *a, const void *b, const void *priv);
245 typedef int (*cmp_func_t)(const void *a, const void *b);
246 
247 #endif /*  __ASSEMBLY__ */
248 #endif /* _LINUX_TYPES_H */
249