asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char * buf,
size_t count, long dummy, loff_t pos)
{
extern asmlinkage ssize_t sys_pread64(unsigned int fd, char * buf,
size_t count, loff_t pos);
return sys_pread64(fd, buf, count, pos);
}
asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
char __user *ubuf,
compat_size_t count,
unsigned long poshi,
unsigned long poslo)
{
return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
}
static void my_pread(const char *file, const char *fail_message,
int fd, void *buf, size_t bufsz, uintptr_t pos) {
ssize_t result = sys_pread64(fd, buf, bufsz, pos);
if (result < 0)
fail(file, fail_message, "errno", my_errno, NULL, 0);
if ((size_t) result != bufsz)
fail(file, fail_message, "read count", result, NULL, 0);
}
/*
* The UnixWare 7 pread64/pwrite64 syscalls are the same as in Linux,
* but we can't easily handle long long syscall parameters for lcall7,
* thus we have to fake two 32bit arguments instead.
*/
ssize_t
uw7_pread64(int fd, char *bufp, int count, u_int pos, u_int pos_hi)
{
return sys_pread64(fd, bufp, count, (pos | (loff_t)pos_hi << 32));
}
long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count,
u32 dummy, u32 low, u32 high)
{
return sys_pread64(fd, ubuf, count, ((loff_t)high << 32) | low);
}
asmlinkage ssize_t sys_pread64_metag(unsigned long fd, char __user *buf,
size_t count, unsigned long lo,
unsigned long hi)
{
return sys_pread64(fd, buf, count, merge_64(hi, lo));
}
compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
u32 reg6, u32 poshi, u32 poslo)
{
return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
}
asmlinkage
ssize_t sys_lkl_pread64(unsigned int fd, char *buf, size_t count,
off_t pos_hi, off_t pos_lo)
{
return sys_pread64(fd, buf, count, ((loff_t)pos_hi << 32) + pos_lo);
}
asmlinkage ssize_t trimedia_pread64(unsigned int fd, char __user *buf, size_t count,
unsigned int low , unsigned int high)
{
return sys_pread64(fd, buf, count, (loff_t)high << 32 | low);
}
COMPAT_SYSCALL_DEFINE6(pread64, unsigned int, fd, char __user *, ubuf,
size_t, count, u32, dummy, u32, low, u32, high)
{
return sys_pread64(fd, ubuf, count, ((loff_t)high << 32) | low);
}
