-#ifdef __linux__
-#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ > 0
-/* glibc 2.1 or newer -> pread/pwrite supported automatically */
-#define SHERLOCK_HAVE_PREAD
-#elif defined(i386) && defined(__GLIBC__)
-/* glibc 2.0 on i386 -> call syscalls directly */
-#include <asm/unistd.h>
-#include <syscall-list.h>
-#include <sys/types.h>
-#include <unistd.h>
-#ifndef SYS_pread
-#define SYS_pread 180
-#endif
-static int pread(unsigned int fd, void *buf, size_t size, loff_t where)
-{ return syscall(SYS_pread, fd, buf, size, where); }
-#ifndef SYS_pwrite
-#define SYS_pwrite 181
-#endif
-static int pwrite(unsigned int fd, void *buf, size_t size, loff_t where)
-{ return syscall(SYS_pwrite, fd, buf, size, where); }
-#define SHERLOCK_HAVE_PREAD
-#elif defined(i386)
-/* old libc on i386 -> call syscalls directly the old way */
-#include <asm/unistd.h>
-static _syscall4(int, pread, unsigned int, fd, void *, buf, size_t, size, loff_t, where);
-static _syscall4(int, pwrite, unsigned int, fd, void *, buf, size_t, size, loff_t, where);
-#define SHERLOCK_HAVE_PREAD
-#endif
-#endif /* __linux__ */
+static inline sh_off_t
+sh_file_size(const char *name)
+{
+ int fd = sh_open(name, O_RDONLY);
+ if (fd < 0)
+ die("Cannot open %s: %m", name);
+ sh_off_t len = sh_seek(fd, 0, SEEK_END);
+ close(fd);
+ return len;
+}