This source file includes following definitions.
- rpl_lseek
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17 #include <config.h>
18
19
20 #include <unistd.h>
21
22 #if defined _WIN32 && ! defined __CYGWIN__
23
24
25 # include <windows.h>
26
27 # if GNULIB_MSVC_NOTHROW
28 # include "msvc-nothrow.h"
29 # else
30 # include <io.h>
31 # endif
32 #else
33 # include <sys/stat.h>
34 #endif
35 #include <errno.h>
36
37 #undef lseek
38
39 off_t
40 rpl_lseek (int fd, off_t offset, int whence)
41 {
42 #if defined _WIN32 && ! defined __CYGWIN__
43
44 HANDLE h = (HANDLE) _get_osfhandle (fd);
45 if (h == INVALID_HANDLE_VALUE)
46 {
47 errno = EBADF;
48 return -1;
49 }
50 if (GetFileType (h) != FILE_TYPE_DISK)
51 {
52 errno = ESPIPE;
53 return -1;
54 }
55 #else
56
57 struct stat statbuf;
58 if (fstat (fd, &statbuf) < 0)
59 return -1;
60 if (!S_ISREG (statbuf.st_mode))
61 {
62 errno = ESPIPE;
63 return -1;
64 }
65 #endif
66 #if _GL_WINDOWS_64_BIT_OFF_T || (defined __MINGW32__ && defined _FILE_OFFSET_BITS && (_FILE_OFFSET_BITS == 64))
67 return _lseeki64 (fd, offset, whence);
68 #else
69 return lseek (fd, offset, whence);
70 #endif
71 }