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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"
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.");
#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)
/* Everything needed is defined in PC/os2emx/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
#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(HAVE_MKNOD) && defined(HAVE_SYS_MKDEV_H)
#include <sys/mkdev.h>
#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);
}
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);
}
#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;
}
static PyObject *
posix_1str(PyObject *args, char *format, int (*func)(const char*))
{
char *path1 = NULL;
int res;
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 *path1 = NULL, *path2 = NULL;
int res;
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"},
{"st_atime", "time of last access"},
{"st_mtime", "time of last modification"},
{"st_ctime", "time of last change"},
#ifdef HAVE_ST_BLKSIZE
{"st_blksize", "blocksize for filesystem I/O"},
#endif
#ifdef HAVE_ST_BLOCKS
{"st_blocks", "number of blocks allocated"},
#endif
#ifdef HAVE_ST_RDEV
{"st_rdev", "device type (if inode device)"},
#endif
{0}
};
#ifdef HAVE_ST_BLKSIZE
#define ST_BLKSIZE_IDX 10
#else
#define ST_BLKSIZE_IDX 9
#endif
#ifdef HAVE_ST_BLOCKS
#define ST_BLOCKS_IDX (ST_BLKSIZE_IDX+1)
#else
#define ST_BLOCKS_IDX ST_BLKSIZE_IDX
#endif
#ifdef HAVE_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;
/* pack a system stat C structure into the Python stat tuple
(used by posix_stat() and posix_fstat()) */
static PyObject*
_pystat_fromstructstat(STRUCT_STAT st)
{
PyObject *v = PyStructSequence_New(&StatResultType);
if (v == NULL)
return NULL;
PyStructSequence_SET_ITEM(v, 0, PyInt_FromLong((long)st.st_mode));
#ifdef HAVE_LARGEFILE_SUPPORT
PyStructSequence_SET_ITEM(v, 1,
PyLong_FromLongLong((LONG_LONG)st.st_ino));
#else
PyStructSequence_SET_ITEM(v, 1, PyInt_FromLong((long)st.st_ino));
#endif
#if defined(HAVE_LONG_LONG) && !defined(MS_WINDOWS)
PyStructSequence_SET_ITEM(v, 2,
PyLong_FromLongLong((LONG_LONG)st.st_dev));
#else
PyStructSequence_SET_ITEM(v, 2, PyInt_FromLong((long)st.st_dev));
#endif
PyStructSequence_SET_ITEM(v, 3, PyInt_FromLong((long)st.st_nlink));
PyStructSequence_SET_ITEM(v, 4, PyInt_FromLong((long)st.st_uid));
PyStructSequence_SET_ITEM(v, 5, PyInt_FromLong((long)st.st_gid));
#ifdef HAVE_LARGEFILE_SUPPORT
PyStructSequence_SET_ITEM(v, 6,
PyLong_FromLongLong((LONG_LONG)st.st_size));
#else
PyStructSequence_SET_ITEM(v, 6, PyInt_FromLong(st.st_size));
#endif
#if SIZEOF_TIME_T > SIZEOF_LONG
PyStructSequence_SET_ITEM(v, 7,
PyLong_FromLongLong((LONG_LONG)st.st_atime));
PyStructSequence_SET_ITEM(v, 8,
PyLong_FromLongLong((LONG_LONG)st.st_mtime));
PyStructSequence_SET_ITEM(v, 9,
PyLong_FromLongLong((LONG_LONG)st.st_ctime));
#else
PyStructSequence_SET_ITEM(v, 7, PyInt_FromLong((long)st.st_atime));
PyStructSequence_SET_ITEM(v, 8, PyInt_FromLong((long)st.st_mtime));
PyStructSequence_SET_ITEM(v, 9, PyInt_FromLong((long)st.st_ctime));
#endif
#ifdef HAVE_ST_BLKSIZE
PyStructSequence_SET_ITEM(v, ST_BLKSIZE_IDX,
PyInt_FromLong((long)st.st_blksize));
#endif
#ifdef HAVE_ST_BLOCKS
PyStructSequence_SET_ITEM(v, ST_BLOCKS_IDX,
PyInt_FromLong((long)st.st_blocks));
#endif
#ifdef HAVE_ST_RDEV
PyStructSequence_SET_ITEM(v, ST_RDEV_IDX,
PyInt_FromLong((long)st.st_rdev));
#endif
if (PyErr_Occurred()) {
Py_DECREF(v);
return NULL;
}
return v;
}
static PyObject *
posix_do_stat(PyObject *self, PyObject *args, char *format,
int (*statfunc)(const char *, STRUCT_STAT *))
{
STRUCT_STAT st;
char *path = NULL; /* pass this to stat; do not free() it */
char *pathfree = NULL; /* this memory must be free'd */
int res;
#ifdef MS_WINDOWS
int pathlen;
char pathcopy[MAX_PATH];
#endif /* MS_WINDOWS */
if (!PyArg_ParseTuple(args, format,
Py_FileSystemDefaultEncoding, &path))
return NULL;
pathfree = path;
#ifdef MS_WINDOWS
pathlen = strlen(path);
/* the library call can blow up if the file name is too long! */
if (pathlen > MAX_PATH) {
PyMem_Free(pathfree);
errno = ENAMETOOLONG;
return posix_error();
}
/* Remove trailing slash or backslash, unless it's the current
drive root (/ or \) or a specific drive's root (like c:\ or c:/).
*/
if (pathlen > 0 &&
(path[pathlen-1]== '\\' || path[pathlen-1] == '/')) {
/* It does end with a slash -- exempt the root drive cases. */
/* XXX UNC root drives should also be exempted? */
if (pathlen == 1 || (pathlen == 3 && path[1] == ':'))
/* leave it alone */;
else {
/* nuke the trailing backslash */
strncpy(pathcopy, path, pathlen);
pathcopy[pathlen-1] = '\0';
path = pathcopy;
}
}
#endif /* MS_WINDOWS */
Py_BEGIN_ALLOW_THREADS
res = (*statfunc)(path, &st);
Py_END_ALLOW_THREADS
if (res != 0)
return posix_error_with_allocated_filename(pathfree);
PyMem_Free(pathfree);
return _pystat_fromstructstat(st);
}
/* POSIX methods */
PyDoc_STRVAR(posix_access__doc__,
"access(path, mode) -> 1 if granted, 0 otherwise\n\n\
Use the real uid/gid to test for access to a path. Note that most\n\
operations will use the effective uid/gid, therefore this routine can\n\
be used in a suid/sgid environment to test if the invoking user has the\n\
specified access to the path. The mode argument can be F_OK to test\n\
existence, or the inclusive-OR of R_OK, W_OK, and X_OK.");
static PyObject *
posix_access(PyObject *self, PyObject *args)
{
char *path;
int mode;
int res;
if (!PyArg_ParseTuple(args, "si:access", &path, &mode))
return NULL;
Py_BEGIN_ALLOW_THREADS
res = access(path, mode);
Py_END_ALLOW_THREADS
return(PyInt_FromLong(res == 0 ? 1L : 0L));
}
#ifndef F_OK
#define F_OK 0
#endif
#ifndef R_OK
#define R_OK 4
#endif
#ifndef W_OK
#define W_OK 2
#endif
#ifndef X_OK
#define X_OK 1
#endif
#ifdef HAVE_TTYNAME
PyDoc_STRVAR(posix_ttyname__doc__,
"ttyname(fd) -> string\n\n\
Return the name of the terminal device connected to 'fd'.");
static PyObject *
posix_ttyname(PyObject *self, PyObject *args)
{
int id;
char *ret;
if (!PyArg_ParseTuple(args, "i:ttyname", &id))
return NULL;
ret = ttyname(id);
if (ret == NULL)
return(posix_error());
return(PyString_FromString(ret));
}
#endif
#ifdef HAVE_CTERMID
PyDoc_STRVAR(posix_ctermid__doc__,
"ctermid() -> string\n\n\
Return the name of the controlling terminal for this process.");
static PyObject *
posix_ctermid(PyObject *self, PyObject *args)
{
char *ret;
char buffer[L_ctermid];
if (!PyArg_ParseTuple(args, ":ctermid"))
return NULL;
#ifdef USE_CTERMID_R
ret = ctermid_r(buffer);
#else
ret = ctermid(buffer);
#endif
if (ret == NULL)
return(posix_error());
return(PyString_FromString(buffer));
}
#endif
PyDoc_STRVAR(posix_chdir__doc__,
"chdir(path)\n\n\
Change the current working directory to the specified path.");
static PyObject *
posix_chdir(PyObject *self, PyObject *args)
{
#if defined(PYOS_OS2) && defined(PYCC_GCC)
return posix_1str(args, "et:chdir", _chdir2);
#else
return posix_1str(args, "et:chdir", chdir);
#endif
}
#ifdef HAVE_FCHDIR
PyDoc_STRVAR(posix_fchdir__doc__,
"fchdir(fildes)\n\n\
Change to the directory of the given file descriptor. fildes must be\n\
opened on a directory, not a file.");
static PyObject *
posix_fchdir(PyObject *self, PyObject *fdobj)
{
return posix_fildes(fdobj, fchdir);
}
#endif /* HAVE_FCHDIR */
PyDoc_STRVAR(posix_chmod__doc__,
"chmod(path, mode)\n\n\
Change the access permissions of a file.");
static PyObject *
posix_chmod(PyObject *self, PyObject *args)
{
char *path = NULL;
int i;
int res;
if (!PyArg_ParseTuple(args, "eti", Py_FileSystemDefaultEncoding,
&path, &i))
return NULL;
Py_BEGIN_ALLOW_THREADS
res = chmod(path, i);
Py_END_ALLOW_THREADS
if (res < 0)
return posix_error_with_allocated_filename(path);
PyMem_Free(path);
Py_INCREF(Py_None);
return Py_None;
}
#ifdef HAVE_CHROOT
PyDoc_STRVAR(posix_chroot__doc__,
"chroot(path)\n\n\
Change root directory to path.");
static PyObject *
posix_chroot(PyObject *self, PyObject *args)
{
return posix_1str(args, "et:chroot", chroot);
}
#endif
#ifdef HAVE_FSYNC
PyDoc_STRVAR(posix_fsync__doc__,
"fsync(fildes)\n\n\
force write of file with filedescriptor to disk.");
static PyObject *
posix_fsync(PyObject *self, PyObject *fdobj)
{
return posix_fildes(fdobj, fsync);
}
#endif /* HAVE_FSYNC */
#ifdef HAVE_FDATASYNC
#ifdef __hpux
extern int fdatasync(int); /* On HP-UX, in libc but not in unistd.h */
#endif
PyDoc_STRVAR(posix_fdatasync__doc__,
"fdatasync(fildes)\n\n\
force write of file with filedescriptor to disk.\n\
does not force update of metadata.");
static PyObject *
posix_fdatasync(PyObject *self, PyObject *fdobj)
{
return posix_fildes(fdobj, fdatasync);
}
#endif /* HAVE_FDATASYNC */
#ifdef HAVE_CHOWN
PyDoc_STRVAR(posix_chown__doc__,
"chown(path, uid, gid)\n\n\
Change the owner and group id of path to the numeric uid and gid.");
static PyObject *
posix_chown(PyObject *self, PyObject *args)
{
char *path = NULL;
int uid, gid;
int res;
if (!PyArg_ParseTuple(args, "etii:chown",
Py_FileSystemDefaultEncoding, &path,
&uid, &gid))
return NULL;
Py_BEGIN_ALLOW_THREADS
res = chown(path, (uid_t) uid, (gid_t) gid);
Py_END_ALLOW_THREADS
if (res < 0)
return posix_error_with_allocated_filename(path);
PyMem_Free(path);
Py_INCREF(Py_None);
return Py_None;
}
#endif /* HAVE_CHOWN */
#ifdef HAVE_LCHOWN
PyDoc_STRVAR(posix_lchown__doc__,
"lchown(path, uid, gid)\n\n\
Change the owner and group id of path to the numeric uid and gid.\n\
This function will not follow symbolic links.");
static PyObject *
posix_lchown(PyObject *self, PyObject *args)
{
char *path = NULL;
int uid, gid;
int res;
if (!PyArg_ParseTuple(args, "etii:lchown",
Py_FileSystemDefaultEncoding, &path,
&uid, &gid))
return NULL;
Py_BEGIN_ALLOW_THREADS
res = lchown(path, (uid_t) uid, (gid_t) gid);
Py_END_ALLOW_THREADS
if (res < 0)
return posix_error_with_allocated_filename(path);
PyMem_Free(path);
Py_INCREF(Py_None);
return Py_None;
}
#endif /* HAVE_LCHOWN */
#ifdef HAVE_GETCWD
PyDoc_STRVAR(posix_getcwd__doc__,
"getcwd() -> path\n\n\
Return a string representing the current working directory.");
static PyObject *
posix_getcwd(PyObject *self, PyObject *args)
{
char buf[1026];
char *res;
if (!PyArg_ParseTuple(args, ":getcwd"))
return NULL;
Py_BEGIN_ALLOW_THREADS
#if defined(PYOS_OS2) && defined(PYCC_GCC)
res = _getcwd2(buf, sizeof buf);
#else
res = getcwd(buf, sizeof buf);
#endif
Py_END_ALLOW_THREADS
if (res == NULL)
return posix_error();
return PyString_FromString(buf);
}
#endif
#ifdef HAVE_LINK
PyDoc_STRVAR(posix_link__doc__,
"link(src, dst)\n\n\
Create a hard link to a file.");