Patch #614055: Support OpenVMS.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index fd7f69f..61fc02d 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -16,6 +16,33 @@
#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\
@@ -94,8 +121,8 @@
#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 */
+#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
@@ -304,6 +331,198 @@
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$TZ")
+ "MET-1MET_DST-2,M3.5.0/2,M10.5.0/3"
+PAGER=more
+TERM=vt300_series
+SHELL=/bin/sh
+HOME=/dka100/user/zessin
+_=/bin/env
+
+>>> for v in os.environ.items():
+... print v
+...
+('HOME', '/user_here/zessin')
+('COLUMNS', '80')
+('LINES', '24')
+('PATH', '/python_disk/python/python-1_5_2/vms')
+('OS', 'OpenVMS')
+('USER', 'ZESSIN')
+('LOGNAME', 'zessin')
+('TERM', 'vt300-80')
+('USERNAME', 'zessin')
+>>>
+*/
+#endif /* __VMS */
+
static PyObject *
convertenviron(void)
{
@@ -330,7 +549,19 @@
PyErr_Clear();
continue;
}
+#if defined(__VMS)
+ if ((strncmp(at_home, *e, sizeof(at_home)) == 0) ||
+ (strncmp(at_path, *e, sizeof(at_path)) == 0)) {
+ (void)shell$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);
@@ -343,6 +574,9 @@
Py_DECREF(k);
Py_DECREF(v);
}
+#if defined(__VMS)
+ psmmod_add_posix_env(d);
+#endif /* defined(__VMS) */
#if defined(PYOS_OS2)
{
APIRET rc;
@@ -895,7 +1129,11 @@
static PyObject *
posix_do_stat(PyObject *self, PyObject *args,
char *format,
+#ifdef __VMS
+ int (*statfunc)(const char *, STRUCT_STAT *, ...),
+#else
int (*statfunc)(const char *, STRUCT_STAT *),
+#endif
char *wformat,
int (*wstatfunc)(const Py_UNICODE *, STRUCT_STAT *))
{
@@ -1048,7 +1286,17 @@
if (!PyArg_ParseTuple(args, "i:ttyname", &id))
return NULL;
+#if defined(__VMS)
+ /* DECC V5.0 - only about FD= 0 @@ try getname()+$getdvi(dvi$_devnam) */
+ if (id == 0) {
+ ret = ttyname();
+ }
+ else {
+ ret = NULL;
+ }
+#else
ret = ttyname(id);
+#endif
if (ret == NULL)
return(posix_error());
return(PyString_FromString(ret));
@@ -1092,8 +1340,13 @@
#elif defined(PYOS_OS2) && defined(PYCC_GCC)
return posix_1str(args, "et:chdir", _chdir2, NULL, NULL);
#else
+#ifdef __VMS
+ return posix_1str(args, "et:chdir", (int (*)(const char *))chdir,
+ NULL, NULL);
+#else
return posix_1str(args, "et:chdir", chdir, NULL, NULL);
#endif
+#endif
}
#ifdef HAVE_FCHDIR
@@ -1247,8 +1500,13 @@
#if defined(PYOS_OS2) && defined(PYCC_GCC)
res = _getcwd2(buf, sizeof buf);
#else
+#if defined(__VMS)
+ /* 0 = force Unix-style path if in the VMS DCL environment! */
+ res = getcwd(buf, sizeof buf, 0);
+#else
res = getcwd(buf, sizeof buf);
#endif
+#endif
Py_END_ALLOW_THREADS
if (res == NULL)
return posix_error();
@@ -5115,7 +5373,11 @@
if (!PyArg_ParseTuple(args, ":pipe"))
return NULL;
Py_BEGIN_ALLOW_THREADS
+#if defined(__VMS)
+ res = pipe(fds,0,2100); /* bigger mailbox quota than 512 */
+#else
res = pipe(fds);
+#endif
Py_END_ALLOW_THREADS
if (res != 0)
return posix_error();