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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 <ctype.h> /* tolower() */
# include <descrip.h> /* string descriptors */
# include <dvidef.h> /* DVI$_name */
# include <file.h> /* -> O_RDWR */
# include <jpidef.h> /* JPI$_name */
# include <lib$routines.h> /* LIB$name */
# include <ots$routines.h> /* OTS$name */
# include <ssdef.h> /* SS$_name */
# include <unixio.h>
# include <unixlib.h>
# include <stat.h>
/* ----- */
/* DECC on Alpha does redefine these already */
# ifndef shell$from_vms
# define shell$from_vms(_p1_,_p2_,_p3_) decc$from_vms(_p1_,_p2_,_p3_)
# endif
# ifndef shell$translate_vms
# define shell$translate_vms(_p1_) decc$translate_vms(_p1_)
# endif
# ifndef shell$to_vms
# define shell$to_vms(_p1_,_p2_,_p3_,_p4_,_p5_) \
decc$to_vms(_p1_,_p2_,_p3_,_p4_,_p5_)
# endif
# include <wait.h> /* define wait() */
#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>
#include "osdefs.h"
#endif
#endif
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h> /* For WNOHANG */
#endif
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif /* HAVE_FCNTL_H */
#ifdef HAVE_GRP_H
#include <grp.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
#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
#define HAVE_POPEN 1
#define HAVE_SYSTEM 1
#define HAVE_WAIT 1
#define HAVE_TTYNAME 1
#endif /* PYOS_OS2 && PYCC_GCC */
#endif /* _MSC_VER */
#endif /* __BORLANDC__ */
#endif /* ! __WATCOMC__ || __QNX__ */
#endif /* ! __IBMC__ */
#ifndef _MSC_VER
#if defined(sun) && !defined(__SVR4)
/* SunOS 4.1.4 doesn't have prototypes for these: */
extern int rename(const char *, const char *);
extern int pclose(FILE *);
extern int fclose(FILE *);
extern int fsync(int);
extern int lstat(const char *, struct stat *);
extern int symlink(const char *, const char *);
#endif
#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_LEAN_AND_MEAN
#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 _stati64
# define FSTAT _fstati64
# define STRUCT_STAT struct _stati64
#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 */
#if defined(__VMS)
static char psxmod_gt_psxpath[1026];
static int
psxmod_from_vms_action (char *spec)
{
(void)strcpy(psxmod_gt_psxpath, spec);
return 1;
}
/* Return a dictionary corresponding to the VMS 'environment table' */
static char* at_home = "HOME";
static char* at_path = "PATH";
static char psxmod_t_command [] = "SYS$COMMAND";
/* add some values to provide a similar environment like POSIX */
void
psmmod_add_posix_env(PyObject *d)
{
/* -------------------- */
struct dsc$descriptor_s r_device_name;
long l_devbufsiz;
long l_tt_page;
long l_item_code;
long l_status;
PyObject *o;
struct dsc$descriptor_s r_resultant_string;
char t_resultant_string[13]; /* enough space for username (12)+ '\0' */
char *at_resultant_string;
short int w_resultant_length;
/* set up string descriptor */
r_device_name.dsc$w_length = strlen(psxmod_t_command);
r_device_name.dsc$b_dtype = DSC$K_DTYPE_T;
r_device_name.dsc$b_class = DSC$K_CLASS_S;
r_device_name.dsc$a_pointer = &psxmod_t_command[0];
/* -------------------- */
/* COLUMNS = $getdvi("SYS$COMMAND","DEVBUFSIZ") */
l_item_code = DVI$_DEVBUFSIZ;
l_status = lib$getdvi(&l_item_code,
0, /* [channel] */
&r_device_name,
&l_devbufsiz, /* integer-value */
0, /* resultant_string */
0); /* resultant_length */
if (l_status == SS$_NORMAL) {
/* create a string object here to comply with POSIX */
/* set up string descriptor */
r_resultant_string.dsc$w_length =
(sizeof(t_resultant_string) - 1); /* ommit '\0' at end */
r_resultant_string.dsc$b_dtype = DSC$K_DTYPE_T;
r_resultant_string.dsc$b_class = DSC$K_CLASS_S;
r_resultant_string.dsc$a_pointer = &t_resultant_string[0];
/* Convert Signed Integer to Decimal Text */
l_status = ots$cvt_l_ti(&l_devbufsiz, &r_resultant_string, 1,
4, 0);
if (l_status == SS$_NORMAL) {
/* terminate string for 'C'-style */
t_resultant_string[sizeof(t_resultant_string)-1] = '\0';
/* string appears as: ' value' -- skip ' ' */
at_resultant_string = &t_resultant_string[0];
while ((*at_resultant_string == ' ' ) &&
(*at_resultant_string != '\0')) {
at_resultant_string++; /* skip prefix spaces */
}
o = Py_BuildValue("s", at_resultant_string);
if (o != NULL) {
(void) PyDict_SetItemString(d, "COLUMNS", o);
Py_DECREF(o);
}
} /* (l_status = ots$cvt_l_ti() == SS$_NORMAL) */
} /* (l_status = lib$getdvi(DVI$_DEVBUFSIZ) == SS$_NORMAL) */
/* LINES = $getdvi("SYS$COMMAND","TT_PAGE") */
l_item_code = DVI$_TT_PAGE;
l_status = lib$getdvi(&l_item_code,
0, /* [channel] */
&r_device_name,
&l_tt_page, /* integer-value */
0, /* resultant_string */
0); /* resultant_length */
if (l_status == SS$_NORMAL) {
/* create a string object here to comply with POSIX */
/* set up string descriptor */
r_resultant_string.dsc$w_length =
(sizeof(t_resultant_string) - 1); /* ommit '\0' at end */
r_resultant_string.dsc$b_dtype = DSC$K_DTYPE_T;
r_resultant_string.dsc$b_class = DSC$K_CLASS_S;
r_resultant_string.dsc$a_pointer = &t_resultant_string[0];
/* Convert Signed Integer to Decimal Text */
l_status = ots$cvt_l_ti(&l_tt_page, &r_resultant_string,
1, 4, 0);
if (l_status == SS$_NORMAL) {
/* terminate string for 'C'-style */
t_resultant_string[sizeof(t_resultant_string)-1] = '\0';
/* string appears as: ' value' -- skip ' ' */
at_resultant_string = &t_resultant_string[0];
while ((*at_resultant_string == ' ' ) &&
(*at_resultant_string != '\0')) {
at_resultant_string++; /* skip prefix spaces */
}
o = Py_BuildValue("s", at_resultant_string);
if (o != NULL) {
(void)PyDict_SetItemString(d, "LINES", o);
Py_DECREF(o);
}
} /* (l_status = ots$cvt_l_ti() == SS$_NORMAL) */
} /* (l_status = lib$getdvi(DVI$_TT_PAGE) == SS$_NORMAL) */
/* else -- ignore error */
/* LOGNAME = $getjpi(0,"USERNAME") */
l_item_code = JPI$_USERNAME;
/* set up string descriptor */
r_resultant_string.dsc$w_length =
(sizeof(t_resultant_string) - 1); /* ommit '\0' at end */
r_resultant_string.dsc$b_dtype = DSC$K_DTYPE_T;
r_resultant_string.dsc$b_class = DSC$K_CLASS_S;
r_resultant_string.dsc$a_pointer = &t_resultant_string[0];
l_status = lib$getjpi(&l_item_code, 0, 0, 0,
&r_resultant_string, &w_resultant_length);
if (l_status == SS$_NORMAL){
t_resultant_string[w_resultant_length] = '\0';
/* remove any trailing spaces by replacing 1st one with '\0' */
at_resultant_string = &t_resultant_string[0];
while ((*at_resultant_string != ' ' ) &&
(*at_resultant_string != '\0')) {
/* lowercase for compatibility with POSIX */
*at_resultant_string = tolower(*at_resultant_string);
at_resultant_string++; /* skip non-blank */
}
*at_resultant_string = '\0'; /* terminate */
o = Py_BuildValue("s", &t_resultant_string[0]);
if (o != NULL) {
(void) PyDict_SetItemString(d, "LOGNAME", o);
(void) PyDict_SetItemString(d, "USERNAME", o);
Py_DECREF(o);
}
} /* (l_status == SS$_NORMAL) */
/* OS = "OpenVMS" */
o = PyString_FromString ("OpenVMS");
if (o != NULL) {
(void)PyDict_SetItemString(d, "OS", o);
Py_DECREF(o);
}
}
/* @@ posix env:
COLUMNS=80 $ write sys$output f$getdvi("SYS$COMMAND","DEVBUFSIZ")
LINES=47 $ write sys$output f$getdvi("SYS$COMMAND","TT_PAGE")
LOGNAME=zessin $ write sys$output f$edit(f$getjpi(0,"username"), -
"collapse,lowercase")
OS=OpenVMS
PS1=HERE $
TZ=CET-1:00CET DST,M3.5.0/2:00,M10.5.0/3:00
$ write sys$output f$trnlnm("POSIX$DEFAULT_TZ")
"CET-1:00CET DST-2:00,M3.5.0/2:00,M10.5.0/3:00"
$ write sys$output f$trnlnm("UCX$TZ")
"MET-1MET_DST-2,M3.5.0/2,M10.5.0/3"
PAGER=more
TERM=vt300_series
SHELL=/bin/sh
HOME=/dka100/user/zessin
_=/bin/env
>>> for v in os.environ.items():
... print v
...
('HOME', '/user_here/zessin')
('COLUMNS', '80')
('LINES', '24')
('PATH', '/python_disk/python/python-1_5_2/vms')
('OS', 'OpenVMS')
('USER', 'ZESSIN')
('LOGNAME', 'zessin')
('TERM', 'vt300-80')
('USERNAME', 'zessin')
>>>
*/
#endif /* __VMS */
static PyObject *
convertenviron(void)
{
PyObject *d;
char **e;
d = PyDict_New();
if (d == NULL)
return NULL;
#ifdef WITH_NEXT_FRAMEWORK
if (environ == NULL)
environ = *_NSGetEnviron();
#endif
if (environ == NULL)
return d;
/* This part ignores errors */
for (e = environ; *e != NULL; e++) {
PyObject *k;
PyObject *v;
char *p = strchr(*e, '=');
if (p == NULL)
continue;
k = PyString_FromStringAndSize(*e, (int)(p-*e));
if (k == NULL) {
PyErr_Clear();
continue;
}
#if defined(__VMS)
if ((strncmp(at_home, *e, sizeof(at_home)) == 0) ||
(strncmp(at_path, *e, sizeof(at_path)) == 0)) {
(void)shell$from_vms(p+1, psxmod_from_vms_action, 0);
/* 0 = no wildcard expansion */
v = PyString_FromString(psxmod_gt_psxpath);
}
else {
v = PyString_FromString(p+1);
}
#else
v = PyString_FromString(p+1);
#endif
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(__VMS)
psmmod_add_posix_env(d);
#endif /* defined(__VMS) */
#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(*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;
}
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, or st_rdev,\n\
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
{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
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;