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		__aligned_u64
119 #define aligned_be64		__aligned_be64
120 #define aligned_le64		__aligned_le64
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 space 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