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/arch/x86/include/asm/compat.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 219 lines | 176 code | 27 blank | 16 comment | 0 complexity | 2346215dc0e45f6f4ea5bafe697c8f1c MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  1#ifndef _ASM_X86_COMPAT_H
  2#define _ASM_X86_COMPAT_H
  3
  4/*
  5 * Architecture specific compatibility types
  6 */
  7#include <linux/types.h>
  8#include <linux/sched.h>
  9#include <asm/user32.h>
 10
 11#define COMPAT_USER_HZ		100
 12#define COMPAT_UTS_MACHINE	"i686\0\0"
 13
 14typedef u32		compat_size_t;
 15typedef s32		compat_ssize_t;
 16typedef s32		compat_time_t;
 17typedef s32		compat_clock_t;
 18typedef s32		compat_pid_t;
 19typedef u16		__compat_uid_t;
 20typedef u16		__compat_gid_t;
 21typedef u32		__compat_uid32_t;
 22typedef u32		__compat_gid32_t;
 23typedef u16		compat_mode_t;
 24typedef u32		compat_ino_t;
 25typedef u16		compat_dev_t;
 26typedef s32		compat_off_t;
 27typedef s64		compat_loff_t;
 28typedef u16		compat_nlink_t;
 29typedef u16		compat_ipc_pid_t;
 30typedef s32		compat_daddr_t;
 31typedef u32		compat_caddr_t;
 32typedef __kernel_fsid_t	compat_fsid_t;
 33typedef s32		compat_timer_t;
 34typedef s32		compat_key_t;
 35
 36typedef s32		compat_int_t;
 37typedef s32		compat_long_t;
 38typedef s64 __attribute__((aligned(4))) compat_s64;
 39typedef u32		compat_uint_t;
 40typedef u32		compat_ulong_t;
 41typedef u64 __attribute__((aligned(4))) compat_u64;
 42
 43struct compat_timespec {
 44	compat_time_t	tv_sec;
 45	s32		tv_nsec;
 46};
 47
 48struct compat_timeval {
 49	compat_time_t	tv_sec;
 50	s32		tv_usec;
 51};
 52
 53struct compat_stat {
 54	compat_dev_t	st_dev;
 55	u16		__pad1;
 56	compat_ino_t	st_ino;
 57	compat_mode_t	st_mode;
 58	compat_nlink_t	st_nlink;
 59	__compat_uid_t	st_uid;
 60	__compat_gid_t	st_gid;
 61	compat_dev_t	st_rdev;
 62	u16		__pad2;
 63	u32		st_size;
 64	u32		st_blksize;
 65	u32		st_blocks;
 66	u32		st_atime;
 67	u32		st_atime_nsec;
 68	u32		st_mtime;
 69	u32		st_mtime_nsec;
 70	u32		st_ctime;
 71	u32		st_ctime_nsec;
 72	u32		__unused4;
 73	u32		__unused5;
 74};
 75
 76struct compat_flock {
 77	short		l_type;
 78	short		l_whence;
 79	compat_off_t	l_start;
 80	compat_off_t	l_len;
 81	compat_pid_t	l_pid;
 82};
 83
 84#define F_GETLK64	12	/*  using 'struct flock64' */
 85#define F_SETLK64	13
 86#define F_SETLKW64	14
 87
 88/*
 89 * IA32 uses 4 byte alignment for 64 bit quantities,
 90 * so we need to pack this structure.
 91 */
 92struct compat_flock64 {
 93	short		l_type;
 94	short		l_whence;
 95	compat_loff_t	l_start;
 96	compat_loff_t	l_len;
 97	compat_pid_t	l_pid;
 98} __attribute__((packed));
 99
100struct compat_statfs {
101	int		f_type;
102	int		f_bsize;
103	int		f_blocks;
104	int		f_bfree;
105	int		f_bavail;
106	int		f_files;
107	int		f_ffree;
108	compat_fsid_t	f_fsid;
109	int		f_namelen;	/* SunOS ignores this field. */
110	int		f_frsize;
111	int		f_spare[5];
112};
113
114#define COMPAT_RLIM_OLD_INFINITY	0x7fffffff
115#define COMPAT_RLIM_INFINITY		0xffffffff
116
117typedef u32		compat_old_sigset_t;	/* at least 32 bits */
118
119#define _COMPAT_NSIG		64
120#define _COMPAT_NSIG_BPW	32
121
122typedef u32               compat_sigset_word;
123
124#define COMPAT_OFF_T_MAX	0x7fffffff
125#define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL
126
127struct compat_ipc64_perm {
128	compat_key_t key;
129	__compat_uid32_t uid;
130	__compat_gid32_t gid;
131	__compat_uid32_t cuid;
132	__compat_gid32_t cgid;
133	unsigned short mode;
134	unsigned short __pad1;
135	unsigned short seq;
136	unsigned short __pad2;
137	compat_ulong_t unused1;
138	compat_ulong_t unused2;
139};
140
141struct compat_semid64_ds {
142	struct compat_ipc64_perm sem_perm;
143	compat_time_t  sem_otime;
144	compat_ulong_t __unused1;
145	compat_time_t  sem_ctime;
146	compat_ulong_t __unused2;
147	compat_ulong_t sem_nsems;
148	compat_ulong_t __unused3;
149	compat_ulong_t __unused4;
150};
151
152struct compat_msqid64_ds {
153	struct compat_ipc64_perm msg_perm;
154	compat_time_t  msg_stime;
155	compat_ulong_t __unused1;
156	compat_time_t  msg_rtime;
157	compat_ulong_t __unused2;
158	compat_time_t  msg_ctime;
159	compat_ulong_t __unused3;
160	compat_ulong_t msg_cbytes;
161	compat_ulong_t msg_qnum;
162	compat_ulong_t msg_qbytes;
163	compat_pid_t   msg_lspid;
164	compat_pid_t   msg_lrpid;
165	compat_ulong_t __unused4;
166	compat_ulong_t __unused5;
167};
168
169struct compat_shmid64_ds {
170	struct compat_ipc64_perm shm_perm;
171	compat_size_t  shm_segsz;
172	compat_time_t  shm_atime;
173	compat_ulong_t __unused1;
174	compat_time_t  shm_dtime;
175	compat_ulong_t __unused2;
176	compat_time_t  shm_ctime;
177	compat_ulong_t __unused3;
178	compat_pid_t   shm_cpid;
179	compat_pid_t   shm_lpid;
180	compat_ulong_t shm_nattch;
181	compat_ulong_t __unused4;
182	compat_ulong_t __unused5;
183};
184
185/*
186 * The type of struct elf_prstatus.pr_reg in compatible core dumps.
187 */
188typedef struct user_regs_struct32 compat_elf_gregset_t;
189
190/*
191 * A pointer passed in from user mode. This should not
192 * be used for syscall parameters, just declare them
193 * as pointers because the syscall entry code will have
194 * appropriately converted them already.
195 */
196typedef	u32		compat_uptr_t;
197
198static inline void __user *compat_ptr(compat_uptr_t uptr)
199{
200	return (void __user *)(unsigned long)uptr;
201}
202
203static inline compat_uptr_t ptr_to_compat(void __user *uptr)
204{
205	return (u32)(unsigned long)uptr;
206}
207
208static inline void __user *arch_compat_alloc_user_space(long len)
209{
210	struct pt_regs *regs = task_pt_regs(current);
211	return (void __user *)regs->sp - len;
212}
213
214static inline int is_compat_task(void)
215{
216	return current_thread_info()->status & TS_COMPAT;
217}
218
219#endif /* _ASM_X86_COMPAT_H */