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Patch #614055: Support OpenVMS.
This commit is contained in:
Martin v. Löwis
parent
468742878f
commit
79acb9edfa
13 changed files with 528 additions and 7 deletions
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@ -16,6 +16,33 @@
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#include "Python.h"
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#include "structseq.h"
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#if defined(__VMS)
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# include <ctype.h> /* tolower() */
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# include <descrip.h> /* string descriptors */
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# include <dvidef.h> /* DVI$_name */
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# include <file.h> /* -> O_RDWR */
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# include <jpidef.h> /* JPI$_name */
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# include <lib$routines.h> /* LIB$name */
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# include <ots$routines.h> /* OTS$name */
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# include <ssdef.h> /* SS$_name */
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# include <unixio.h>
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# include <unixlib.h>
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# include <stat.h>
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/* ----- */
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/* DECC on Alpha does redefine these already */
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# ifndef shell$from_vms
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# define shell$from_vms(_p1_,_p2_,_p3_) decc$from_vms(_p1_,_p2_,_p3_)
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# endif
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# ifndef shell$translate_vms
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# define shell$translate_vms(_p1_) decc$translate_vms(_p1_)
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# endif
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# ifndef shell$to_vms
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# define shell$to_vms(_p1_,_p2_,_p3_,_p4_,_p5_) \
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decc$to_vms(_p1_,_p2_,_p3_,_p4_,_p5_)
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# endif
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# include <wait.h> /* define wait() */
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#endif /* defined(__VMS) */
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PyDoc_STRVAR(posix__doc__,
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"This module provides access to operating system functionality that is\n\
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standardized by the C Standard and the POSIX standard (a thinly\n\
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@ -94,8 +121,8 @@ corresponding Unix manual entries for more information on calls.");
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#define HAVE_SYSTEM 1
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#define HAVE_CWAIT 1
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#else
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#if defined(PYOS_OS2) && defined(PYCC_GCC)
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/* Everything needed is defined in PC/os2emx/pyconfig.h */
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#if defined(PYOS_OS2) && defined(PYCC_GCC) || defined(__VMS)
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/* Everything needed is defined in PC/os2emx/pyconfig.h or vms/pyconfig.h */
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#else /* all other compilers */
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/* Unix functions that the configure script doesn't check for */
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#define HAVE_EXECV 1
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@ -304,6 +331,198 @@ static char **environ;
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extern char **environ;
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#endif /* !_MSC_VER */
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#if defined(__VMS)
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static char psxmod_gt_psxpath[1026];
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static int
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psxmod_from_vms_action (char *spec)
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{
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(void)strcpy(psxmod_gt_psxpath, spec);
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return 1;
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}
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/* Return a dictionary corresponding to the VMS 'environment table' */
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static char* at_home = "HOME";
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static char* at_path = "PATH";
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static char psxmod_t_command [] = "SYS$COMMAND";
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/* add some values to provide a similar environment like POSIX */
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void
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psmmod_add_posix_env(PyObject *d)
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{
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/* -------------------- */
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struct dsc$descriptor_s r_device_name;
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long l_devbufsiz;
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long l_tt_page;
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long l_item_code;
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long l_status;
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PyObject *o;
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struct dsc$descriptor_s r_resultant_string;
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char t_resultant_string[13]; /* enough space for username (12)+ '\0' */
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char *at_resultant_string;
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short int w_resultant_length;
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/* set up string descriptor */
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r_device_name.dsc$w_length = strlen(psxmod_t_command);
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r_device_name.dsc$b_dtype = DSC$K_DTYPE_T;
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r_device_name.dsc$b_class = DSC$K_CLASS_S;
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r_device_name.dsc$a_pointer = &psxmod_t_command[0];
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/* -------------------- */
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/* COLUMNS = $getdvi("SYS$COMMAND","DEVBUFSIZ") */
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l_item_code = DVI$_DEVBUFSIZ;
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l_status = lib$getdvi(&l_item_code,
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0, /* [channel] */
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&r_device_name,
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&l_devbufsiz, /* integer-value */
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0, /* resultant_string */
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0); /* resultant_length */
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if (l_status == SS$_NORMAL) {
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/* create a string object here to comply with POSIX */
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/* set up string descriptor */
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r_resultant_string.dsc$w_length =
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(sizeof(t_resultant_string) - 1); /* ommit '\0' at end */
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r_resultant_string.dsc$b_dtype = DSC$K_DTYPE_T;
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r_resultant_string.dsc$b_class = DSC$K_CLASS_S;
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r_resultant_string.dsc$a_pointer = &t_resultant_string[0];
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/* Convert Signed Integer to Decimal Text */
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l_status = ots$cvt_l_ti(&l_devbufsiz, &r_resultant_string, 1,
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4, 0);
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if (l_status == SS$_NORMAL) {
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/* terminate string for 'C'-style */
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t_resultant_string[sizeof(t_resultant_string)-1] = '\0';
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/* string appears as: ' value' -- skip ' ' */
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at_resultant_string = &t_resultant_string[0];
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while ((*at_resultant_string == ' ' ) &&
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(*at_resultant_string != '\0')) {
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at_resultant_string++; /* skip prefix spaces */
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}
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o = Py_BuildValue("s", at_resultant_string);
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if (o != NULL) {
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(void) PyDict_SetItemString(d, "COLUMNS", o);
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Py_DECREF(o);
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}
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} /* (l_status = ots$cvt_l_ti() == SS$_NORMAL) */
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} /* (l_status = lib$getdvi(DVI$_DEVBUFSIZ) == SS$_NORMAL) */
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/* LINES = $getdvi("SYS$COMMAND","TT_PAGE") */
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l_item_code = DVI$_TT_PAGE;
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l_status = lib$getdvi(&l_item_code,
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0, /* [channel] */
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&r_device_name,
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&l_tt_page, /* integer-value */
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0, /* resultant_string */
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0); /* resultant_length */
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if (l_status == SS$_NORMAL) {
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/* create a string object here to comply with POSIX */
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/* set up string descriptor */
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r_resultant_string.dsc$w_length =
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(sizeof(t_resultant_string) - 1); /* ommit '\0' at end */
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r_resultant_string.dsc$b_dtype = DSC$K_DTYPE_T;
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r_resultant_string.dsc$b_class = DSC$K_CLASS_S;
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r_resultant_string.dsc$a_pointer = &t_resultant_string[0];
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/* Convert Signed Integer to Decimal Text */
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l_status = ots$cvt_l_ti(&l_tt_page, &r_resultant_string,
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1, 4, 0);
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if (l_status == SS$_NORMAL) {
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/* terminate string for 'C'-style */
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t_resultant_string[sizeof(t_resultant_string)-1] = '\0';
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/* string appears as: ' value' -- skip ' ' */
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at_resultant_string = &t_resultant_string[0];
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while ((*at_resultant_string == ' ' ) &&
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(*at_resultant_string != '\0')) {
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at_resultant_string++; /* skip prefix spaces */
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}
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o = Py_BuildValue("s", at_resultant_string);
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if (o != NULL) {
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(void)PyDict_SetItemString(d, "LINES", o);
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Py_DECREF(o);
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}
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} /* (l_status = ots$cvt_l_ti() == SS$_NORMAL) */
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} /* (l_status = lib$getdvi(DVI$_TT_PAGE) == SS$_NORMAL) */
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/* else -- ignore error */
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/* LOGNAME = $getjpi(0,"USERNAME") */
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l_item_code = JPI$_USERNAME;
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/* set up string descriptor */
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r_resultant_string.dsc$w_length =
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(sizeof(t_resultant_string) - 1); /* ommit '\0' at end */
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r_resultant_string.dsc$b_dtype = DSC$K_DTYPE_T;
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r_resultant_string.dsc$b_class = DSC$K_CLASS_S;
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r_resultant_string.dsc$a_pointer = &t_resultant_string[0];
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l_status = lib$getjpi(&l_item_code, 0, 0, 0,
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&r_resultant_string, &w_resultant_length);
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if (l_status == SS$_NORMAL){
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t_resultant_string[w_resultant_length] = '\0';
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/* remove any trailing spaces by replacing 1st one with '\0' */
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at_resultant_string = &t_resultant_string[0];
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while ((*at_resultant_string != ' ' ) &&
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(*at_resultant_string != '\0')) {
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/* lowercase for compatibility with POSIX */
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*at_resultant_string = tolower(*at_resultant_string);
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at_resultant_string++; /* skip non-blank */
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}
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*at_resultant_string = '\0'; /* terminate */
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o = Py_BuildValue("s", &t_resultant_string[0]);
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if (o != NULL) {
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(void) PyDict_SetItemString(d, "LOGNAME", o);
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(void) PyDict_SetItemString(d, "USERNAME", o);
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Py_DECREF(o);
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}
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} /* (l_status == SS$_NORMAL) */
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/* OS = "OpenVMS" */
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o = PyString_FromString ("OpenVMS");
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if (o != NULL) {
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(void)PyDict_SetItemString(d, "OS", o);
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Py_DECREF(o);
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}
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}
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/* @@ posix env:
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COLUMNS=80 $ write sys$output f$getdvi("SYS$COMMAND","DEVBUFSIZ")
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LINES=47 $ write sys$output f$getdvi("SYS$COMMAND","TT_PAGE")
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LOGNAME=zessin $ write sys$output f$edit(f$getjpi(0,"username"), -
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"collapse,lowercase")
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OS=OpenVMS
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PS1=HERE $
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TZ=CET-1:00CET DST,M3.5.0/2:00,M10.5.0/3:00
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$ write sys$output f$trnlnm("POSIX$DEFAULT_TZ")
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"CET-1:00CET DST-2:00,M3.5.0/2:00,M10.5.0/3:00"
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$ write sys$output f$trnlnm("UCX$TZ")
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"MET-1MET_DST-2,M3.5.0/2,M10.5.0/3"
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PAGER=more
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TERM=vt300_series
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SHELL=/bin/sh
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HOME=/dka100/user/zessin
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_=/bin/env
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>>> for v in os.environ.items():
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... print v
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...
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('HOME', '/user_here/zessin')
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('COLUMNS', '80')
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('LINES', '24')
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('PATH', '/python_disk/python/python-1_5_2/vms')
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('OS', 'OpenVMS')
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('USER', 'ZESSIN')
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('LOGNAME', 'zessin')
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('TERM', 'vt300-80')
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('USERNAME', 'zessin')
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>>>
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*/
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#endif /* __VMS */
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static PyObject *
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convertenviron(void)
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{
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@ -330,7 +549,19 @@ convertenviron(void)
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PyErr_Clear();
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continue;
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}
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#if defined(__VMS)
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if ((strncmp(at_home, *e, sizeof(at_home)) == 0) ||
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(strncmp(at_path, *e, sizeof(at_path)) == 0)) {
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(void)shell$from_vms(p+1, psxmod_from_vms_action, 0);
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/* 0 = no wildcard expansion */
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v = PyString_FromString(psxmod_gt_psxpath);
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}
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else {
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v = PyString_FromString(p+1);
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}
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#else
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v = PyString_FromString(p+1);
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#endif
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if (v == NULL) {
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PyErr_Clear();
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Py_DECREF(k);
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@ -343,6 +574,9 @@ convertenviron(void)
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Py_DECREF(k);
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Py_DECREF(v);
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}
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#if defined(__VMS)
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psmmod_add_posix_env(d);
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#endif /* defined(__VMS) */
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#if defined(PYOS_OS2)
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{
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APIRET rc;
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@ -895,7 +1129,11 @@ _pystat_fromstructstat(STRUCT_STAT st)
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static PyObject *
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posix_do_stat(PyObject *self, PyObject *args,
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char *format,
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#ifdef __VMS
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int (*statfunc)(const char *, STRUCT_STAT *, ...),
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#else
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int (*statfunc)(const char *, STRUCT_STAT *),
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#endif
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char *wformat,
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int (*wstatfunc)(const Py_UNICODE *, STRUCT_STAT *))
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{
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@ -1048,7 +1286,17 @@ posix_ttyname(PyObject *self, PyObject *args)
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if (!PyArg_ParseTuple(args, "i:ttyname", &id))
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return NULL;
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#if defined(__VMS)
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/* DECC V5.0 - only about FD= 0 @@ try getname()+$getdvi(dvi$_devnam) */
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if (id == 0) {
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ret = ttyname();
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}
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else {
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ret = NULL;
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}
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#else
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ret = ttyname(id);
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#endif
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if (ret == NULL)
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return(posix_error());
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return(PyString_FromString(ret));
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@ -1091,9 +1339,14 @@ posix_chdir(PyObject *self, PyObject *args)
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return posix_1str(args, "et:chdir", chdir, "U:chdir", _wchdir);
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#elif defined(PYOS_OS2) && defined(PYCC_GCC)
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return posix_1str(args, "et:chdir", _chdir2, NULL, NULL);
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#else
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#ifdef __VMS
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return posix_1str(args, "et:chdir", (int (*)(const char *))chdir,
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NULL, NULL);
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#else
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return posix_1str(args, "et:chdir", chdir, NULL, NULL);
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#endif
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#endif
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}
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#ifdef HAVE_FCHDIR
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@ -1246,8 +1499,13 @@ posix_getcwd(PyObject *self, PyObject *args)
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Py_BEGIN_ALLOW_THREADS
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#if defined(PYOS_OS2) && defined(PYCC_GCC)
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res = _getcwd2(buf, sizeof buf);
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#else
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#if defined(__VMS)
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/* 0 = force Unix-style path if in the VMS DCL environment! */
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res = getcwd(buf, sizeof buf, 0);
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#else
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res = getcwd(buf, sizeof buf);
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#endif
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#endif
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Py_END_ALLOW_THREADS
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if (res == NULL)
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@ -5115,7 +5373,11 @@ posix_pipe(PyObject *self, PyObject *args)
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if (!PyArg_ParseTuple(args, ":pipe"))
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return NULL;
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Py_BEGIN_ALLOW_THREADS
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#if defined(__VMS)
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res = pipe(fds,0,2100); /* bigger mailbox quota than 512 */
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#else
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res = pipe(fds);
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#endif
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Py_END_ALLOW_THREADS
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if (res != 0)
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return posix_error();
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