Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 #ifndef _LINUX_COMPAT_H
  2 #define _LINUX_COMPAT_H
  3 /*
  4  * These are the type definitions for the architecture specific
  5  * syscall compatibility layer.
  6  */
  7 #include <linux/config.h>
  8 
  9 #ifdef CONFIG_COMPAT
 10 
 11 #include <linux/stat.h>
 12 #include <linux/param.h>        /* for HZ */
 13 #include <linux/sem.h>
 14 
 15 #include <asm/compat.h>
 16 #include <asm/siginfo.h>
 17 
 18 #define compat_jiffies_to_clock_t(x)    \
 19                 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
 20 
 21 struct rusage;
 22 
 23 struct compat_itimerspec { 
 24         struct compat_timespec it_interval;
 25         struct compat_timespec it_value;
 26 };
 27 
 28 struct compat_utimbuf {
 29         compat_time_t           actime;
 30         compat_time_t           modtime;
 31 };
 32 
 33 struct compat_itimerval {
 34         struct compat_timeval   it_interval;
 35         struct compat_timeval   it_value;
 36 };
 37 
 38 struct compat_tms {
 39         compat_clock_t          tms_utime;
 40         compat_clock_t          tms_stime;
 41         compat_clock_t          tms_cutime;
 42         compat_clock_t          tms_cstime;
 43 };
 44 
 45 #define _COMPAT_NSIG_WORDS      (_COMPAT_NSIG / _COMPAT_NSIG_BPW)
 46 
 47 typedef struct {
 48         compat_sigset_word      sig[_COMPAT_NSIG_WORDS];
 49 } compat_sigset_t;
 50 
 51 extern int cp_compat_stat(struct kstat *, struct compat_stat __user *);
 52 extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *);
 53 extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *);
 54 
 55 struct compat_iovec {
 56         compat_uptr_t   iov_base;
 57         compat_size_t   iov_len;
 58 };
 59 
 60 struct compat_rlimit {
 61         compat_ulong_t  rlim_cur;
 62         compat_ulong_t  rlim_max;
 63 };
 64 
 65 struct compat_rusage {
 66         struct compat_timeval ru_utime;
 67         struct compat_timeval ru_stime;
 68         compat_long_t   ru_maxrss;
 69         compat_long_t   ru_ixrss;
 70         compat_long_t   ru_idrss;
 71         compat_long_t   ru_isrss;
 72         compat_long_t   ru_minflt;
 73         compat_long_t   ru_majflt;
 74         compat_long_t   ru_nswap;
 75         compat_long_t   ru_inblock;
 76         compat_long_t   ru_oublock;
 77         compat_long_t   ru_msgsnd;
 78         compat_long_t   ru_msgrcv;
 79         compat_long_t   ru_nsignals;
 80         compat_long_t   ru_nvcsw;
 81         compat_long_t   ru_nivcsw;
 82 };
 83 
 84 extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *);
 85 
 86 struct compat_dirent {
 87         u32             d_ino;
 88         compat_off_t    d_off;
 89         u16             d_reclen;
 90         char            d_name[256];
 91 };
 92 
 93 typedef union compat_sigval {
 94         compat_int_t    sival_int;
 95         compat_uptr_t   sival_ptr;
 96 } compat_sigval_t;
 97 
 98 typedef struct compat_sigevent {
 99         compat_sigval_t sigev_value;
100         compat_int_t sigev_signo;
101         compat_int_t sigev_notify;
102         union {
103                 compat_int_t _pad[SIGEV_PAD_SIZE];
104                 compat_int_t _tid;
105 
106                 struct {
107                         compat_uptr_t _function;
108                         compat_uptr_t _attribute;
109                 } _sigev_thread;
110         } _sigev_un;
111 } compat_sigevent_t;
112 
113 
114 long compat_sys_semctl(int first, int second, int third, void __user *uptr);
115 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
116 long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
117                 int version, void __user *uptr);
118 long compat_sys_msgctl(int first, int second, void __user *uptr);
119 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
120                 void __user *uptr);
121 long compat_sys_shmctl(int first, int second, void __user *uptr);
122 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
123                 unsigned nsems, const struct compat_timespec __user *timeout);
124 asmlinkage long compat_sys_keyctl(u32 option,
125                               u32 arg2, u32 arg3, u32 arg4, u32 arg5);
126 
127 asmlinkage ssize_t compat_sys_readv(unsigned long fd,
128                 const struct compat_iovec __user *vec, unsigned long vlen);
129 asmlinkage ssize_t compat_sys_writev(unsigned long fd,
130                 const struct compat_iovec __user *vec, unsigned long vlen);
131 
132 int compat_do_execve(char * filename, compat_uptr_t __user *argv,
133                 compat_uptr_t __user *envp, struct pt_regs * regs);
134 
135 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
136                 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
137                 struct compat_timeval __user *tvp);
138 
139 #define BITS_PER_COMPAT_LONG    (8*sizeof(compat_long_t))
140 
141 #define BITS_TO_COMPAT_LONGS(bits) \
142         (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
143 
144 long compat_get_bitmap(unsigned long *mask, compat_ulong_t __user *umask,
145                        unsigned long bitmap_size);
146 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
147                        unsigned long bitmap_size);
148 struct compat_siginfo;
149 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from);
150 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from);
151 #endif /* CONFIG_COMPAT */
152 #endif /* _LINUX_COMPAT_H */
153 
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