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posixmodule.c
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posixmodule.c
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/* POSIX module implementation */
/* This file is also used for Windows NT/MS-Win and OS/2. In that case the
module actually calls itself 'nt' or 'os2', not 'posix', and a few
functions are either unimplemented or implemented differently. The source
assumes that for Windows NT, the macro 'MS_WINDOWS' is defined independent
of the compiler used. Different compilers define their own feature
test macro, e.g. '__BORLANDC__' or '_MSC_VER'. For OS/2, the compiler
independent macro PYOS_OS2 should be defined. On OS/2 the default
compiler is assumed to be IBM's VisualAge C++ (VACPP). PYCC_GCC is used
as the compiler specific macro for the EMX port of gcc to OS/2. */
/* See also ../Dos/dosmodule.c */
#include "Python.h"
#include "structseq.h"
#if defined(__VMS)
# include <unixio.h>
#endif /* defined(__VMS) */
PyDoc_STRVAR(posix__doc__,
"This module provides access to operating system functionality that is\n\
standardized by the C Standard and the POSIX standard (a thinly\n\
disguised Unix interface). Refer to the library manual and\n\
corresponding Unix manual entries for more information on calls.");
#ifndef Py_USING_UNICODE
/* This is used in signatures of functions. */
#define Py_UNICODE void
#endif
#if defined(PYOS_OS2)
#define INCL_DOS
#define INCL_DOSERRORS
#define INCL_DOSPROCESS
#define INCL_NOPMAPI
#include <os2.h>
#if defined(PYCC_GCC)
#include <ctype.h>
#include <io.h>
#include <stdio.h>
#include <process.h>
#endif
#include "osdefs.h"
#endif
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h> /* For WNOHANG */
#endif
#include <signal.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif /* HAVE_FCNTL_H */
#ifdef HAVE_GRP_H
#include <grp.h>
#endif
#ifdef HAVE_SYSEXITS_H
#include <sysexits.h>
#endif /* HAVE_SYSEXITS_H */
#ifdef HAVE_SYS_LOADAVG_H
#include <sys/loadavg.h>
#endif
/* Various compilers have only certain posix functions */
/* XXX Gosh I wish these were all moved into pyconfig.h */
#if defined(PYCC_VACPP) && defined(PYOS_OS2)
#include <process.h>
#else
#if defined(__WATCOMC__) && !defined(__QNX__) /* Watcom compiler */
#define HAVE_GETCWD 1
#define HAVE_OPENDIR 1
#define HAVE_SYSTEM 1
#if defined(__OS2__)
#define HAVE_EXECV 1
#define HAVE_WAIT 1
#endif
#include <process.h>
#else
#ifdef __BORLANDC__ /* Borland compiler */
#define HAVE_EXECV 1
#define HAVE_GETCWD 1
#define HAVE_OPENDIR 1
#define HAVE_PIPE 1
#define HAVE_POPEN 1
#define HAVE_SYSTEM 1
#define HAVE_WAIT 1
#else
#ifdef _MSC_VER /* Microsoft compiler */
#define HAVE_GETCWD 1
#define HAVE_SPAWNV 1
#define HAVE_EXECV 1
#define HAVE_PIPE 1
#define HAVE_POPEN 1
#define HAVE_SYSTEM 1
#define HAVE_CWAIT 1
#define HAVE_FSYNC 1
#define fsync _commit
#else
#if defined(PYOS_OS2) && defined(PYCC_GCC) || defined(__VMS)
/* Everything needed is defined in PC/os2emx/pyconfig.h or vms/pyconfig.h */
#else /* all other compilers */
/* Unix functions that the configure script doesn't check for */
#define HAVE_EXECV 1
#define HAVE_FORK 1
#if defined(__USLC__) && defined(__SCO_VERSION__) /* SCO UDK Compiler */
#define HAVE_FORK1 1
#endif
#define HAVE_GETCWD 1
#define HAVE_GETEGID 1
#define HAVE_GETEUID 1
#define HAVE_GETGID 1
#define HAVE_GETPPID 1
#define HAVE_GETUID 1
#define HAVE_KILL 1
#define HAVE_OPENDIR 1
#define HAVE_PIPE 1
#ifndef __rtems__
#define HAVE_POPEN 1
#endif
#define HAVE_SYSTEM 1
#define HAVE_WAIT 1
#define HAVE_TTYNAME 1
#endif /* PYOS_OS2 && PYCC_GCC && __VMS */
#endif /* _MSC_VER */
#endif /* __BORLANDC__ */
#endif /* ! __WATCOMC__ || __QNX__ */
#endif /* ! __IBMC__ */
#ifndef _MSC_VER
#if defined(__sgi)&&_COMPILER_VERSION>=700
/* declare ctermid_r if compiling with MIPSPro 7.x in ANSI C mode
(default) */
extern char *ctermid_r(char *);
#endif
#ifndef HAVE_UNISTD_H
#if defined(PYCC_VACPP)
extern int mkdir(char *);
#else
#if ( defined(__WATCOMC__) || defined(_MSC_VER) ) && !defined(__QNX__)
extern int mkdir(const char *);
#else
extern int mkdir(const char *, mode_t);
#endif
#endif
#if defined(__IBMC__) || defined(__IBMCPP__)
extern int chdir(char *);
extern int rmdir(char *);
#else
extern int chdir(const char *);
extern int rmdir(const char *);
#endif
#ifdef __BORLANDC__
extern int chmod(const char *, int);
#else
extern int chmod(const char *, mode_t);
#endif
extern int chown(const char *, uid_t, gid_t);
extern char *getcwd(char *, int);
extern char *strerror(int);
extern int link(const char *, const char *);
extern int rename(const char *, const char *);
extern int stat(const char *, struct stat *);
extern int unlink(const char *);
extern int pclose(FILE *);
#ifdef HAVE_SYMLINK
extern int symlink(const char *, const char *);
#endif /* HAVE_SYMLINK */
#ifdef HAVE_LSTAT
extern int lstat(const char *, struct stat *);
#endif /* HAVE_LSTAT */
#endif /* !HAVE_UNISTD_H */
#endif /* !_MSC_VER */
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif /* HAVE_UTIME_H */
#ifdef HAVE_SYS_UTIME_H
#include <sys/utime.h>
#define HAVE_UTIME_H /* pretend we do for the rest of this file */
#endif /* HAVE_SYS_UTIME_H */
#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
#endif /* HAVE_SYS_TIMES_H */
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif /* HAVE_SYS_PARAM_H */
#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif /* HAVE_SYS_UTSNAME_H */
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#define NAMLEN(dirent) strlen((dirent)->d_name)
#else
#if defined(__WATCOMC__) && !defined(__QNX__)
#include <direct.h>
#define NAMLEN(dirent) strlen((dirent)->d_name)
#else
#define dirent direct
#define NAMLEN(dirent) (dirent)->d_namlen
#endif
#ifdef HAVE_SYS_NDIR_H
#include <sys/ndir.h>
#endif
#ifdef HAVE_SYS_DIR_H
#include <sys/dir.h>
#endif
#ifdef HAVE_NDIR_H
#include <ndir.h>
#endif
#endif
#ifdef _MSC_VER
#include <direct.h>
#include <io.h>
#include <process.h>
#include "osdefs.h"
#define _WIN32_WINNT 0x0400 /* Needed for CryptoAPI on some systems */
#include <windows.h>
#include <shellapi.h> /* for ShellExecute() */
#define popen _popen
#define pclose _pclose
#endif /* _MSC_VER */
#if defined(PYCC_VACPP) && defined(PYOS_OS2)
#include <io.h>
#endif /* OS2 */
#ifndef MAXPATHLEN
#define MAXPATHLEN 1024
#endif /* MAXPATHLEN */
#ifdef UNION_WAIT
/* Emulate some macros on systems that have a union instead of macros */
#ifndef WIFEXITED
#define WIFEXITED(u_wait) (!(u_wait).w_termsig && !(u_wait).w_coredump)
#endif
#ifndef WEXITSTATUS
#define WEXITSTATUS(u_wait) (WIFEXITED(u_wait)?((u_wait).w_retcode):-1)
#endif
#ifndef WTERMSIG
#define WTERMSIG(u_wait) ((u_wait).w_termsig)
#endif
#endif /* UNION_WAIT */
/* Don't use the "_r" form if we don't need it (also, won't have a
prototype for it, at least on Solaris -- maybe others as well?). */
#if defined(HAVE_CTERMID_R) && defined(WITH_THREAD)
#define USE_CTERMID_R
#endif
#if defined(HAVE_TMPNAM_R) && defined(WITH_THREAD)
#define USE_TMPNAM_R
#endif
/* choose the appropriate stat and fstat functions and return structs */
#undef STAT
#if defined(MS_WIN64) || defined(MS_WINDOWS)
# define STAT win32_stat
# define FSTAT win32_fstat
# define STRUCT_STAT struct win32_stat
#else
# define STAT stat
# define FSTAT fstat
# define STRUCT_STAT struct stat
#endif
#if defined(MAJOR_IN_MKDEV)
#include <sys/mkdev.h>
#else
#if defined(MAJOR_IN_SYSMACROS)
#include <sys/sysmacros.h>
#endif
#if defined(HAVE_MKNOD) && defined(HAVE_SYS_MKDEV_H)
#include <sys/mkdev.h>
#endif
#endif
/* Return a dictionary corresponding to the POSIX environment table */
#ifdef WITH_NEXT_FRAMEWORK
/* On Darwin/MacOSX a shared library or framework has no access to
** environ directly, we must obtain it with _NSGetEnviron().
*/
#include <crt_externs.h>
static char **environ;
#elif !defined(_MSC_VER) && ( !defined(__WATCOMC__) || defined(__QNX__) )
extern char **environ;
#endif /* !_MSC_VER */
static PyObject *
convertenviron(void)
{
PyObject *d;
char **e;
d = PyDict_New();
if (d == NULL)
return NULL;
#ifdef WITH_NEXT_FRAMEWORK
if (environ == NULL)
environ = *_NSGetEnviron();
#endif
if (environ == NULL)
return d;
/* This part ignores errors */
for (e = environ; *e != NULL; e++) {
PyObject *k;
PyObject *v;
char *p = strchr(*e, '=');
if (p == NULL)
continue;
k = PyString_FromStringAndSize(*e, (int)(p-*e));
if (k == NULL) {
PyErr_Clear();
continue;
}
v = PyString_FromString(p+1);
if (v == NULL) {
PyErr_Clear();
Py_DECREF(k);
continue;
}
if (PyDict_GetItem(d, k) == NULL) {
if (PyDict_SetItem(d, k, v) != 0)
PyErr_Clear();
}
Py_DECREF(k);
Py_DECREF(v);
}
#if defined(PYOS_OS2)
{
APIRET rc;
char buffer[1024]; /* OS/2 Provides a Documented Max of 1024 Chars */
rc = DosQueryExtLIBPATH(buffer, BEGIN_LIBPATH);
if (rc == NO_ERROR) { /* (not a type, envname is NOT 'BEGIN_LIBPATH') */
PyObject *v = PyString_FromString(buffer);
PyDict_SetItemString(d, "BEGINLIBPATH", v);
Py_DECREF(v);
}
rc = DosQueryExtLIBPATH(buffer, END_LIBPATH);
if (rc == NO_ERROR) { /* (not a typo, envname is NOT 'END_LIBPATH') */
PyObject *v = PyString_FromString(buffer);
PyDict_SetItemString(d, "ENDLIBPATH", v);
Py_DECREF(v);
}
}
#endif
return d;
}
/* Set a POSIX-specific error from errno, and return NULL */
static PyObject *
posix_error(void)
{
return PyErr_SetFromErrno(PyExc_OSError);
}
static PyObject *
posix_error_with_filename(char* name)
{
return PyErr_SetFromErrnoWithFilename(PyExc_OSError, name);
}
#ifdef Py_WIN_WIDE_FILENAMES
static PyObject *
posix_error_with_unicode_filename(Py_UNICODE* name)
{
return PyErr_SetFromErrnoWithUnicodeFilename(PyExc_OSError, name);
}
#endif /* Py_WIN_WIDE_FILENAMES */
static PyObject *
posix_error_with_allocated_filename(char* name)
{
PyObject *rc = PyErr_SetFromErrnoWithFilename(PyExc_OSError, name);
PyMem_Free(name);
return rc;
}
#ifdef MS_WINDOWS
static PyObject *
win32_error(char* function, char* filename)
{
/* XXX We should pass the function name along in the future.
(_winreg.c also wants to pass the function name.)
This would however require an additional param to the
Windows error object, which is non-trivial.
*/
errno = GetLastError();
if (filename)
return PyErr_SetFromWindowsErrWithFilename(errno, filename);
else
return PyErr_SetFromWindowsErr(errno);
}
#ifdef Py_WIN_WIDE_FILENAMES
static PyObject *
win32_error_unicode(char* function, Py_UNICODE* filename)
{
/* XXX - see win32_error for comments on 'function' */
errno = GetLastError();
if (filename)
return PyErr_SetFromWindowsErrWithUnicodeFilename(errno, filename);
else
return PyErr_SetFromWindowsErr(errno);
}
static PyObject *_PyUnicode_FromFileSystemEncodedObject(register PyObject *obj)
{
/* XXX Perhaps we should make this API an alias of
PyObject_Unicode() instead ?! */
if (PyUnicode_CheckExact(obj)) {
Py_INCREF(obj);
return obj;
}
if (PyUnicode_Check(obj)) {
/* For a Unicode subtype that's not a Unicode object,
return a true Unicode object with the same data. */
return PyUnicode_FromUnicode(PyUnicode_AS_UNICODE(obj),
PyUnicode_GET_SIZE(obj));
}
return PyUnicode_FromEncodedObject(obj,
Py_FileSystemDefaultEncoding,
"strict");
}
#endif /* Py_WIN_WIDE_FILENAMES */
#endif
#if defined(PYOS_OS2)
/**********************************************************************
* Helper Function to Trim and Format OS/2 Messages
**********************************************************************/
static void
os2_formatmsg(char *msgbuf, int msglen, char *reason)
{
msgbuf[msglen] = '\0'; /* OS/2 Doesn't Guarantee a Terminator */
if (strlen(msgbuf) > 0) { /* If Non-Empty Msg, Trim CRLF */
char *lastc = &msgbuf[ strlen(msgbuf)-1 ];
while (lastc > msgbuf && isspace(Py_CHARMASK(*lastc)))
*lastc-- = '\0'; /* Trim Trailing Whitespace (CRLF) */
}
/* Add Optional Reason Text */
if (reason) {
strcat(msgbuf, " : ");
strcat(msgbuf, reason);
}
}
/**********************************************************************
* Decode an OS/2 Operating System Error Code
*
* A convenience function to lookup an OS/2 error code and return a
* text message we can use to raise a Python exception.
*
* Notes:
* The messages for errors returned from the OS/2 kernel reside in
* the file OSO001.MSG in the \OS2 directory hierarchy.
*
**********************************************************************/
static char *
os2_strerror(char *msgbuf, int msgbuflen, int errorcode, char *reason)
{
APIRET rc;
ULONG msglen;
/* Retrieve Kernel-Related Error Message from OSO001.MSG File */
Py_BEGIN_ALLOW_THREADS
rc = DosGetMessage(NULL, 0, msgbuf, msgbuflen,
errorcode, "oso001.msg", &msglen);
Py_END_ALLOW_THREADS
if (rc == NO_ERROR)
os2_formatmsg(msgbuf, msglen, reason);
else
PyOS_snprintf(msgbuf, msgbuflen,
"unknown OS error #%d", errorcode);
return msgbuf;
}
/* Set an OS/2-specific error and return NULL. OS/2 kernel
errors are not in a global variable e.g. 'errno' nor are
they congruent with posix error numbers. */
static PyObject * os2_error(int code)
{
char text[1024];
PyObject *v;
os2_strerror(text, sizeof(text), code, "");
v = Py_BuildValue("(is)", code, text);
if (v != NULL) {
PyErr_SetObject(PyExc_OSError, v);
Py_DECREF(v);
}
return NULL; /* Signal to Python that an Exception is Pending */
}
#endif /* OS2 */
/* POSIX generic methods */
static PyObject *
posix_fildes(PyObject *fdobj, int (*func)(int))
{
int fd;
int res;
fd = PyObject_AsFileDescriptor(fdobj);
if (fd < 0)
return NULL;
Py_BEGIN_ALLOW_THREADS
res = (*func)(fd);
Py_END_ALLOW_THREADS
if (res < 0)
return posix_error();
Py_INCREF(Py_None);
return Py_None;
}
#ifdef Py_WIN_WIDE_FILENAMES
static int
unicode_file_names(void)
{
static int canusewide = -1;
if (canusewide == -1) {
/* As per doc for ::GetVersion(), this is the correct test for
the Windows NT family. */
canusewide = (GetVersion() < 0x80000000) ? 1 : 0;
}
return canusewide;
}
#endif
static PyObject *
posix_1str(PyObject *args, char *format, int (*func)(const char*),
char *wformat, int (*wfunc)(const Py_UNICODE*))
{
char *path1 = NULL;
int res;
#ifdef Py_WIN_WIDE_FILENAMES
if (unicode_file_names()) {
PyUnicodeObject *po;
if (PyArg_ParseTuple(args, wformat, &po)) {
Py_BEGIN_ALLOW_THREADS
/* PyUnicode_AS_UNICODE OK without thread
lock as it is a simple dereference. */
res = (*wfunc)(PyUnicode_AS_UNICODE(po));
Py_END_ALLOW_THREADS
if (res < 0)
return posix_error_with_unicode_filename(PyUnicode_AS_UNICODE(po));
Py_INCREF(Py_None);
return Py_None;
}
/* Drop the argument parsing error as narrow
strings are also valid. */
PyErr_Clear();
}
#else
/* Platforms that don't support Unicode filenames
shouldn't be passing these extra params */
assert(wformat==NULL && wfunc == NULL);
#endif
if (!PyArg_ParseTuple(args, format,
Py_FileSystemDefaultEncoding, &path1))
return NULL;
Py_BEGIN_ALLOW_THREADS
res = (*func)(path1);
Py_END_ALLOW_THREADS
if (res < 0)
return posix_error_with_allocated_filename(path1);
PyMem_Free(path1);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *
posix_2str(PyObject *args,
char *format,
int (*func)(const char *, const char *),
char *wformat,
int (*wfunc)(const Py_UNICODE *, const Py_UNICODE *))
{
char *path1 = NULL, *path2 = NULL;
int res;
#ifdef Py_WIN_WIDE_FILENAMES
if (unicode_file_names()) {
PyObject *po1;
PyObject *po2;
if (PyArg_ParseTuple(args, wformat, &po1, &po2)) {
if (PyUnicode_Check(po1) || PyUnicode_Check(po2)) {
PyObject *wpath1;
PyObject *wpath2;
wpath1 = _PyUnicode_FromFileSystemEncodedObject(po1);
wpath2 = _PyUnicode_FromFileSystemEncodedObject(po2);
if (!wpath1 || !wpath2) {
Py_XDECREF(wpath1);
Py_XDECREF(wpath2);
return NULL;
}
Py_BEGIN_ALLOW_THREADS
/* PyUnicode_AS_UNICODE OK without thread
lock as it is a simple dereference. */
res = (*wfunc)(PyUnicode_AS_UNICODE(wpath1),
PyUnicode_AS_UNICODE(wpath2));
Py_END_ALLOW_THREADS
Py_XDECREF(wpath1);
Py_XDECREF(wpath2);
if (res != 0)
return posix_error();
Py_INCREF(Py_None);
return Py_None;
}
/* Else flow through as neither is Unicode. */
}
/* Drop the argument parsing error as narrow
strings are also valid. */
PyErr_Clear();
}
#else
/* Platforms that don't support Unicode filenames
shouldn't be passing these extra params */
assert(wformat==NULL && wfunc == NULL);
#endif
if (!PyArg_ParseTuple(args, format,
Py_FileSystemDefaultEncoding, &path1,
Py_FileSystemDefaultEncoding, &path2))
return NULL;
Py_BEGIN_ALLOW_THREADS
res = (*func)(path1, path2);
Py_END_ALLOW_THREADS
PyMem_Free(path1);
PyMem_Free(path2);
if (res != 0)
/* XXX how to report both path1 and path2??? */
return posix_error();
Py_INCREF(Py_None);
return Py_None;
}
#ifdef MS_WINDOWS
/* The CRT of Windows has a number of flaws wrt. its stat() implementation:
- time stamps are restricted to second resolution
- file modification times suffer from forth-and-back conversions between
UTC and local time
Therefore, we implement our own stat, based on the Win32 API directly.
*/
#define HAVE_STAT_NSEC 1
struct win32_stat{
int st_dev;
__int64 st_ino;
unsigned short st_mode;
int st_nlink;
int st_uid;
int st_gid;
int st_rdev;
__int64 st_size;
int st_atime;
int st_atime_nsec;
int st_mtime;
int st_mtime_nsec;
int st_ctime;
int st_ctime_nsec;
};
static __int64 secs_between_epochs = 11644473600; /* Seconds between 1.1.1601 and 1.1.1970 */
static void
FILE_TIME_to_time_t_nsec(FILETIME *in_ptr, int *time_out, int* nsec_out)
{
/* XXX endianness */
__int64 in = *(__int64*)in_ptr;
*nsec_out = (int)(in % 10000000) * 100; /* FILETIME is in units of 100 nsec. */
/* XXX Win32 supports time stamps past 2038; we currently don't */
*time_out = Py_SAFE_DOWNCAST((in / 10000000) - secs_between_epochs, __int64, int);
}
/* Below, we *know* that ugo+r is 0444 */
#if _S_IREAD != 0400
#error Unsupported C library
#endif
static int
attributes_to_mode(DWORD attr)
{
int m = 0;
if (attr & FILE_ATTRIBUTE_DIRECTORY)
m |= _S_IFDIR | 0111; /* IFEXEC for user,group,other */
else
m |= _S_IFREG;
if (attr & FILE_ATTRIBUTE_READONLY)
m |= 0444;
else
m |= 0666;
return m;
}
static int
attribute_data_to_stat(WIN32_FILE_ATTRIBUTE_DATA *info, struct win32_stat *result)
{
memset(result, 0, sizeof(*result));
result->st_mode = attributes_to_mode(info->dwFileAttributes);
result->st_size = (((__int64)info->nFileSizeHigh)<<32) + info->nFileSizeLow;
FILE_TIME_to_time_t_nsec(&info->ftCreationTime, &result->st_ctime, &result->st_ctime_nsec);
FILE_TIME_to_time_t_nsec(&info->ftLastWriteTime, &result->st_mtime, &result->st_mtime_nsec);
FILE_TIME_to_time_t_nsec(&info->ftLastAccessTime, &result->st_atime, &result->st_atime_nsec);
return 0;
}
static int
win32_stat(const char* path, struct win32_stat *result)
{
WIN32_FILE_ATTRIBUTE_DATA info;
int code;
char *dot;
/* XXX not supported on Win95 and NT 3.x */
if (!GetFileAttributesExA(path, GetFileExInfoStandard, &info)) {
/* Protocol violation: we explicitly clear errno, instead of
setting it to a POSIX error. Callers should use GetLastError. */
errno = 0;
return -1;
}
code = attribute_data_to_stat(&info, result);
if (code != 0)
return code;
/* Set S_IFEXEC if it is an .exe, .bat, ... */
dot = strrchr(path, '.');
if (dot) {
if (stricmp(dot, ".bat") == 0 ||
stricmp(dot, ".cmd") == 0 ||
stricmp(dot, ".exe") == 0 ||
stricmp(dot, ".com") == 0)
result->st_mode |= 0111;
}
return code;
}
static int
win32_wstat(const wchar_t* path, struct win32_stat *result)
{
int code;
const wchar_t *dot;
WIN32_FILE_ATTRIBUTE_DATA info;
/* XXX not supported on Win95 and NT 3.x */
if (!GetFileAttributesExW(path, GetFileExInfoStandard, &info)) {
/* Protocol violation: we explicitly clear errno, instead of
setting it to a POSIX error. Callers should use GetLastError. */
errno = 0;
return -1;
}
code = attribute_data_to_stat(&info, result);
if (code < 0)
return code;
/* Set IFEXEC if it is an .exe, .bat, ... */
dot = wcsrchr(path, '.');
if (dot) {
if (_wcsicmp(dot, L".bat") == 0 ||
_wcsicmp(dot, L".cmd") == 0 ||
_wcsicmp(dot, L".exe") == 0 ||
_wcsicmp(dot, L".com") == 0)
result->st_mode |= 0111;
}
return code;
}
static int
win32_fstat(int file_number, struct win32_stat *result)
{
BY_HANDLE_FILE_INFORMATION info;
HANDLE h;
int type;
h = (HANDLE)_get_osfhandle(file_number);
/* Protocol violation: we explicitly clear errno, instead of
setting it to a POSIX error. Callers should use GetLastError. */
errno = 0;
if (h == INVALID_HANDLE_VALUE) {
/* This is really a C library error (invalid file handle).
We set the Win32 error to the closes one matching. */
SetLastError(ERROR_INVALID_HANDLE);
return -1;
}
memset(result, 0, sizeof(*result));
type = GetFileType(h);
if (type == FILE_TYPE_UNKNOWN) {
DWORD error = GetLastError();
if (error != 0) {
return -1;
}
/* else: valid but unknown file */
}
if (type != FILE_TYPE_DISK) {
if (type == FILE_TYPE_CHAR)
result->st_mode = _S_IFCHR;
else if (type == FILE_TYPE_PIPE)
result->st_mode = _S_IFIFO;
return 0;
}
if (!GetFileInformationByHandle(h, &info)) {
return -1;
}
/* similar to stat() */
result->st_mode = attributes_to_mode(info.dwFileAttributes);
result->st_size = (((__int64)info.nFileSizeHigh)<<32) + info.nFileSizeLow;
FILE_TIME_to_time_t_nsec(&info.ftCreationTime, &result->st_ctime, &result->st_ctime_nsec);
FILE_TIME_to_time_t_nsec(&info.ftLastWriteTime, &result->st_mtime, &result->st_mtime_nsec);
FILE_TIME_to_time_t_nsec(&info.ftLastAccessTime, &result->st_atime, &result->st_atime_nsec);
/* specific to fstat() */
result->st_nlink = info.nNumberOfLinks;
result->st_ino = (((__int64)info.nFileIndexHigh)<<32) + info.nFileIndexLow;
return 0;
}
#endif /* MS_WINDOWS */
PyDoc_STRVAR(stat_result__doc__,
"stat_result: Result from stat or lstat.\n\n\
This object may be accessed either as a tuple of\n\
(mode, ino, dev, nlink, uid, gid, size, atime, mtime, ctime)\n\
or via the attributes st_mode, st_ino, st_dev, st_nlink, st_uid, and so on.\n\
\n\
Posix/windows: If your platform supports st_blksize, st_blocks, st_rdev,\n\
or st_flags, they are available as attributes only.\n\
\n\
See os.stat for more information.");
static PyStructSequence_Field stat_result_fields[] = {
{"st_mode", "protection bits"},
{"st_ino", "inode"},
{"st_dev", "device"},
{"st_nlink", "number of hard links"},
{"st_uid", "user ID of owner"},
{"st_gid", "group ID of owner"},
{"st_size", "total size, in bytes"},
/* The NULL is replaced with PyStructSequence_UnnamedField later. */
{NULL, "integer time of last access"},
{NULL, "integer time of last modification"},
{NULL, "integer time of last change"},
{"st_atime", "time of last access"},
{"st_mtime", "time of last modification"},
{"st_ctime", "time of last change"},
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
{"st_blksize", "blocksize for filesystem I/O"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
{"st_blocks", "number of blocks allocated"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_RDEV
{"st_rdev", "device type (if inode device)"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
{"st_flags", "user defined flags for file"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_GEN
{"st_gen", "generation number"},
#endif
#ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
{"st_birthtime", "time of creation"},
#endif
{0}
};
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
#define ST_BLKSIZE_IDX 13
#else
#define ST_BLKSIZE_IDX 12
#endif
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
#define ST_BLOCKS_IDX (ST_BLKSIZE_IDX+1)
#else
#define ST_BLOCKS_IDX ST_BLKSIZE_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_RDEV
#define ST_RDEV_IDX (ST_BLOCKS_IDX+1)
#else
#define ST_RDEV_IDX ST_BLOCKS_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
#define ST_FLAGS_IDX (ST_RDEV_IDX+1)
#else
#define ST_FLAGS_IDX ST_RDEV_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_GEN
#define ST_GEN_IDX (ST_FLAGS_IDX+1)
#else
#define ST_GEN_IDX ST_FLAGS_IDX
#endif
#ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
#define ST_BIRTHTIME_IDX (ST_GEN_IDX+1)
#else
#define ST_BIRTHTIME_IDX ST_GEN_IDX
#endif
static PyStructSequence_Desc stat_result_desc = {
"stat_result", /* name */
stat_result__doc__, /* doc */
stat_result_fields,
10
};
PyDoc_STRVAR(statvfs_result__doc__,
"statvfs_result: Result from statvfs or fstatvfs.\n\n\
This object may be accessed either as a tuple of\n\
(bsize, frsize, blocks, bfree, bavail, files, ffree, favail, flag, namemax),\n\
or via the attributes f_bsize, f_frsize, f_blocks, f_bfree, and so on.\n\
\n\
See os.statvfs for more information.");
static PyStructSequence_Field statvfs_result_fields[] = {
{"f_bsize", },
{"f_frsize", },
{"f_blocks", },
{"f_bfree", },
{"f_bavail", },
{"f_files", },
{"f_ffree", },
{"f_favail", },
{"f_flag", },
{"f_namemax",},
{0}
};
static PyStructSequence_Desc statvfs_result_desc = {
"statvfs_result", /* name */
statvfs_result__doc__, /* doc */
statvfs_result_fields,
10
};
static PyTypeObject StatResultType;
static PyTypeObject StatVFSResultType;
static newfunc structseq_new;
static PyObject *
statresult_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
PyStructSequence *result;
int i;
result = (PyStructSequence*)structseq_new(type, args, kwds);
if (!result)
return NULL;
/* If we have been initialized from a tuple,
st_?time might be set to None. Initialize it
from the int slots. */
for (i = 7; i <= 9; i++) {
if (result->ob_item[i+3] == Py_None) {
Py_DECREF(Py_None);
Py_INCREF(result->ob_item[i]);
result->ob_item[i+3] = result->ob_item[i];
}
}
return (PyObject*)result;
}
/* If true, st_?time is float. */