1 /* SPDX-License-Identifier: GPL-2.0 */
5 #define __EXPORTED_HEADERS__
6 #include <uapi/linux/types.h>
10 #define DECLARE_BITMAP(name,bits) \
11 unsigned long name[BITS_TO_LONGS(bits)]
13 typedef u32 __kernel_dev_t
;
15 typedef __kernel_fd_set fd_set
;
16 typedef __kernel_dev_t dev_t
;
17 typedef __kernel_ulong_t ino_t
;
18 typedef __kernel_mode_t mode_t
;
19 typedef unsigned short umode_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
;
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
;
37 typedef unsigned long uintptr_t;
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 */
46 typedef __kernel_loff_t loff_t
;
50 * The following typedefs are also protected by individual ifdefs for
55 typedef __kernel_size_t
size_t;
60 typedef __kernel_ssize_t ssize_t
;
65 typedef __kernel_ptrdiff_t
ptrdiff_t;
70 typedef __kernel_clock_t
clock_t;
75 typedef __kernel_caddr_t caddr_t
;
79 typedef unsigned char u_char
;
80 typedef unsigned short u_short
;
81 typedef unsigned int u_int
;
82 typedef unsigned long u_long
;
85 typedef unsigned char unchar
;
86 typedef unsigned short ushort
;
87 typedef unsigned int uint
;
88 typedef unsigned long ulong
;
90 #ifndef __BIT_TYPES_DEFINED__
91 #define __BIT_TYPES_DEFINED__
95 typedef u16 u_int16_t
;
97 typedef u32 u_int32_t
;
100 #endif /* !(__BIT_TYPES_DEFINED__) */
103 typedef u16
uint16_t;
104 typedef u32
uint32_t;
106 #if defined(__GNUC__)
107 typedef u64
uint64_t;
108 typedef u64 u_int64_t
;
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
118 * The type used for indexing onto a disc or disc partition.
120 * Linux always considers sectors to be 512 bytes long independently
121 * of the devices real block size.
123 * blkcnt_t is the type of the inode's block count.
125 typedef u64 sector_t
;
126 typedef u64 blkcnt_t
;
129 * The type of an index into the pagecache.
131 #define pgoff_t unsigned long
134 * A dma_addr_t can hold any valid DMA address, i.e., any address returned
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.
142 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
143 typedef u64 dma_addr_t
;
145 typedef u32 dma_addr_t
;
148 typedef unsigned int __bitwise gfp_t
;
149 typedef unsigned int __bitwise slab_flags_t
;
150 typedef unsigned int __bitwise fmode_t
;
152 #ifdef CONFIG_PHYS_ADDR_T_64BIT
153 typedef u64 phys_addr_t
;
155 typedef u32 phys_addr_t
;
158 typedef phys_addr_t resource_size_t
;
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.
164 typedef unsigned long irq_hw_number_t
;
170 #define ATOMIC_INIT(i) { (i) }
179 struct list_head
*next
, *prev
;
183 struct hlist_node
*first
;
187 struct hlist_node
*next
, **pprev
;
191 __kernel_daddr_t f_tfree
;
192 #ifdef CONFIG_ARCH_32BIT_USTAT_F_TINODE
193 unsigned int f_tinode
;
195 unsigned long f_tinode
;
202 * struct callback_head - callback structure for use with RCU and task_work
203 * @next: next update requests in a list
204 * @func: actual update function to call after the grace period.
206 * The struct is aligned to size of pointer. On most architectures it happens
207 * naturally due ABI requirements, but some architectures (like CRIS) have
208 * weird ABI and we need to ask it explicitly.
210 * The alignment is required to guarantee that bit 0 of @next will be
211 * clear under normal conditions -- as long as we use call_rcu() or
212 * call_srcu() to queue the callback.
214 * This guarantee is important for few reasons:
215 * - future call_rcu_lazy() will make use of lower bits in the pointer;
216 * - the structure shares storage space in struct page with @compound_head,
217 * which encode PageTail() in bit 0. The guarantee is needed to avoid
218 * false-positive PageTail().
220 struct callback_head
{
221 struct callback_head
*next
;
222 void (*func
)(struct callback_head
*head
);
223 } __attribute__((aligned(sizeof(void *))));
224 #define rcu_head callback_head
226 typedef void (*rcu_callback_t
)(struct rcu_head
*head
);
227 typedef void (*call_rcu_func_t
)(struct rcu_head
*head
, rcu_callback_t func
);
229 typedef void (*swap_func_t
)(void *a
, void *b
, int size
);
231 typedef int (*cmp_r_func_t
)(const void *a
, const void *b
, const void *priv
);
232 typedef int (*cmp_func_t
)(const void *a
, const void *b
);
234 #endif /* __ASSEMBLY__ */
235 #endif /* _LINUX_TYPES_H */