mirror of
https://github.com/python/cpython.git
synced 2024-11-28 16:45:42 +01:00
772 lines
14 KiB
C
772 lines
14 KiB
C
/***********************************************************
|
|
Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
|
|
Netherlands.
|
|
|
|
All Rights Reserved
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
documentation for any purpose and without fee is hereby granted,
|
|
provided that the above copyright notice appear in all copies and that
|
|
both that copyright notice and this permission notice appear in
|
|
supporting documentation, and that the names of Stichting Mathematisch
|
|
Centrum or CWI not be used in advertising or publicity pertaining to
|
|
distribution of the software without specific, written prior permission.
|
|
|
|
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
|
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
|
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
|
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
******************************************************************/
|
|
|
|
/* POSIX module implementation */
|
|
|
|
#ifdef AMOEBA
|
|
#define NO_LSTAT
|
|
#define SYSV
|
|
#endif
|
|
|
|
#ifdef MSDOS
|
|
#define NO_LSTAT
|
|
#endif
|
|
|
|
#include <signal.h>
|
|
#include <string.h>
|
|
#include <setjmp.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#ifdef SYSV
|
|
|
|
#define UTIME_STRUCT
|
|
#include <dirent.h>
|
|
#define direct dirent
|
|
#ifdef i386
|
|
#define mode_t int
|
|
#endif
|
|
|
|
#else /* !SYSV */
|
|
|
|
#ifndef MSDOS
|
|
#include <sys/dir.h>
|
|
#endif
|
|
|
|
#endif /* !SYSV */
|
|
|
|
#include "allobjects.h"
|
|
#include "modsupport.h"
|
|
|
|
extern char *strerror PROTO((int));
|
|
|
|
|
|
/* Return a dictionary corresponding to the POSIX environment table */
|
|
|
|
extern char **environ;
|
|
|
|
static object *
|
|
convertenviron()
|
|
{
|
|
object *d;
|
|
char **e;
|
|
d = newdictobject();
|
|
if (d == NULL)
|
|
return NULL;
|
|
if (environ == NULL)
|
|
return d;
|
|
/* XXX This part ignores errors */
|
|
for (e = environ; *e != NULL; e++) {
|
|
object *v;
|
|
char *p = strchr(*e, '=');
|
|
if (p == NULL)
|
|
continue;
|
|
v = newstringobject(p+1);
|
|
if (v == NULL)
|
|
continue;
|
|
*p = '\0';
|
|
(void) dictinsert(d, *e, v);
|
|
*p = '=';
|
|
DECREF(v);
|
|
}
|
|
return d;
|
|
}
|
|
|
|
|
|
static object *PosixError; /* Exception posix.error */
|
|
|
|
/* Set a POSIX-specific error from errno, and return NULL */
|
|
|
|
static object *
|
|
posix_error()
|
|
{
|
|
return err_errno(PosixError);
|
|
}
|
|
|
|
|
|
/* POSIX generic methods */
|
|
|
|
static object *
|
|
posix_1str(args, func)
|
|
object *args;
|
|
int (*func) FPROTO((const char *));
|
|
{
|
|
object *path1;
|
|
if (!getstrarg(args, &path1))
|
|
return NULL;
|
|
if ((*func)(getstringvalue(path1)) < 0)
|
|
return posix_error();
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
posix_2str(args, func)
|
|
object *args;
|
|
int (*func) FPROTO((const char *, const char *));
|
|
{
|
|
object *path1, *path2;
|
|
if (!getstrstrarg(args, &path1, &path2))
|
|
return NULL;
|
|
if ((*func)(getstringvalue(path1), getstringvalue(path2)) < 0)
|
|
return posix_error();
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
posix_strint(args, func)
|
|
object *args;
|
|
int (*func) FPROTO((const char *, int));
|
|
{
|
|
object *path1;
|
|
int i;
|
|
if (!getstrintarg(args, &path1, &i))
|
|
return NULL;
|
|
if ((*func)(getstringvalue(path1), i) < 0)
|
|
return posix_error();
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
posix_do_stat(self, args, statfunc)
|
|
object *self;
|
|
object *args;
|
|
int (*statfunc) FPROTO((const char *, struct stat *));
|
|
{
|
|
struct stat st;
|
|
object *path;
|
|
object *v;
|
|
if (!getstrarg(args, &path))
|
|
return NULL;
|
|
if ((*statfunc)(getstringvalue(path), &st) != 0)
|
|
return posix_error();
|
|
v = newtupleobject(10);
|
|
if (v == NULL)
|
|
return NULL;
|
|
#define SET(i, st_member) settupleitem(v, i, newintobject((long)st.st_member))
|
|
SET(0, st_mode);
|
|
SET(1, st_ino);
|
|
SET(2, st_dev);
|
|
SET(3, st_nlink);
|
|
SET(4, st_uid);
|
|
SET(5, st_gid);
|
|
SET(6, st_size);
|
|
SET(7, st_atime);
|
|
SET(8, st_mtime);
|
|
SET(9, st_ctime);
|
|
#undef SET
|
|
if (err_occurred()) {
|
|
DECREF(v);
|
|
return NULL;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
|
|
/* POSIX methods */
|
|
|
|
static object *
|
|
posix_chdir(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int chdir PROTO((const char *));
|
|
return posix_1str(args, chdir);
|
|
}
|
|
|
|
static object *
|
|
posix_chmod(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int chmod PROTO((const char *, mode_t));
|
|
return posix_strint(args, chmod);
|
|
}
|
|
|
|
static object *
|
|
posix_getcwd(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
char buf[1026];
|
|
extern char *getcwd PROTO((char *, int));
|
|
if (!getnoarg(args))
|
|
return NULL;
|
|
if (getcwd(buf, sizeof buf) == NULL)
|
|
return posix_error();
|
|
return newstringobject(buf);
|
|
}
|
|
|
|
#ifndef MSDOS
|
|
static object *
|
|
posix_link(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int link PROTO((const char *, const char *));
|
|
return posix_2str(args, link);
|
|
}
|
|
#endif /* !MSDOS */
|
|
|
|
static object *
|
|
posix_listdir(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
object *name, *d, *v;
|
|
|
|
#ifdef MSDOS
|
|
struct ffblk ep;
|
|
int rv;
|
|
if (!getstrarg(args, &name))
|
|
return NULL;
|
|
|
|
if (findfirst((char *) getstringvalue(name), &ep, 0) == -1)
|
|
return posix_error();
|
|
if ((d = newlistobject(0)) == NULL)
|
|
return NULL;
|
|
do {
|
|
v = newstringobject(ep.ff_name);
|
|
if (v == NULL) {
|
|
DECREF(d);
|
|
d = NULL;
|
|
break;
|
|
}
|
|
if (addlistitem(d, v) != 0) {
|
|
DECREF(v);
|
|
DECREF(d);
|
|
d = NULL;
|
|
break;
|
|
}
|
|
DECREF(v);
|
|
} while ((rv = findnext(&ep)) == 0);
|
|
#else /* !MSDOS */
|
|
DIR *dirp;
|
|
struct direct *ep;
|
|
if (!getstrarg(args, &name))
|
|
return NULL;
|
|
if ((dirp = opendir(getstringvalue(name))) == NULL)
|
|
return posix_error();
|
|
if ((d = newlistobject(0)) == NULL) {
|
|
closedir(dirp);
|
|
return NULL;
|
|
}
|
|
while ((ep = readdir(dirp)) != NULL) {
|
|
v = newstringobject(ep->d_name);
|
|
if (v == NULL) {
|
|
DECREF(d);
|
|
d = NULL;
|
|
break;
|
|
}
|
|
if (addlistitem(d, v) != 0) {
|
|
DECREF(v);
|
|
DECREF(d);
|
|
d = NULL;
|
|
break;
|
|
}
|
|
DECREF(v);
|
|
}
|
|
closedir(dirp);
|
|
#endif /* !MSDOS */
|
|
|
|
return d;
|
|
}
|
|
|
|
static object *
|
|
posix_mkdir(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int mkdir PROTO((const char *, mode_t));
|
|
return posix_strint(args, mkdir);
|
|
}
|
|
|
|
#ifdef i386
|
|
int
|
|
rename(from, to)
|
|
char *from;
|
|
char *to;
|
|
{
|
|
int status;
|
|
/* XXX Shouldn't this unlink the destination first? */
|
|
status = link(from, to);
|
|
if (status != 0)
|
|
return status;
|
|
return unlink(from);
|
|
}
|
|
#endif /* i386 */
|
|
|
|
static object *
|
|
posix_rename(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int rename PROTO((const char *, const char *));
|
|
return posix_2str(args, rename);
|
|
}
|
|
|
|
static object *
|
|
posix_rmdir(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int rmdir PROTO((const char *));
|
|
return posix_1str(args, rmdir);
|
|
}
|
|
|
|
static object *
|
|
posix_stat(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int stat PROTO((const char *, struct stat *));
|
|
return posix_do_stat(self, args, stat);
|
|
}
|
|
|
|
static object *
|
|
posix_system(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
object *command;
|
|
int sts;
|
|
if (!getstrarg(args, &command))
|
|
return NULL;
|
|
sts = system(getstringvalue(command));
|
|
return newintobject((long)sts);
|
|
}
|
|
|
|
#ifndef MSDOS
|
|
static object *
|
|
posix_umask(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
int i;
|
|
if (!getintarg(args, &i))
|
|
return NULL;
|
|
i = umask(i);
|
|
if (i < 0)
|
|
return posix_error();
|
|
return newintobject((long)i);
|
|
}
|
|
#endif /* !MSDOS */
|
|
|
|
static object *
|
|
posix_unlink(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int unlink PROTO((const char *));
|
|
return posix_1str(args, unlink);
|
|
}
|
|
|
|
#ifdef UTIME_STRUCT
|
|
#include <utime.h>
|
|
#endif
|
|
|
|
static object *
|
|
posix_utime(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
object *path;
|
|
|
|
#ifdef UTIME_STRUCT
|
|
struct utimbuf buf;
|
|
#define ATIME buf.actime
|
|
#define MTIME buf.modtime
|
|
#define UTIME_ARG &buf
|
|
|
|
#else
|
|
time_t buf[2];
|
|
#define ATIME buf[0]
|
|
#define MTIME buf[1]
|
|
#define UTIME_ARG buf
|
|
#endif
|
|
|
|
if (args == NULL || !is_tupleobject(args) || gettuplesize(args) != 2) {
|
|
err_badarg();
|
|
return NULL;
|
|
}
|
|
if (!getstrarg(gettupleitem(args, 0), &path) ||
|
|
!getlonglongarg(gettupleitem(args, 1), &ATIME, &MTIME))
|
|
return NULL;
|
|
if (utime(getstringvalue(path), UTIME_ARG) < 0)
|
|
return posix_error();
|
|
INCREF(None);
|
|
return None;
|
|
#undef UTIME_ARG
|
|
#undef ATIME
|
|
#undef MTIME
|
|
}
|
|
|
|
|
|
#ifndef MSDOS
|
|
|
|
/* Process operations */
|
|
|
|
static object *
|
|
posix__exit(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
int sts;
|
|
if (!getintarg(args, &sts))
|
|
return NULL;
|
|
_exit(sts);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
/* XXX To do: exece, execp */
|
|
|
|
static object *
|
|
posix_exec(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
object *path, *argv;
|
|
char **argvlist;
|
|
int i, argc;
|
|
object *(*getitem) PROTO((object *, int));
|
|
|
|
/* exec has two arguments: (path, argv), where
|
|
argv is a list or tuple of strings. */
|
|
|
|
if (args == NULL || !is_tupleobject(args) || gettuplesize(args) != 2) {
|
|
badarg:
|
|
err_badarg();
|
|
return NULL;
|
|
}
|
|
if (!getstrarg(gettupleitem(args, 0), &path))
|
|
return NULL;
|
|
argv = gettupleitem(args, 1);
|
|
if (argv == NULL)
|
|
goto badarg;
|
|
if (is_listobject(argv)) {
|
|
argc = getlistsize(argv);
|
|
getitem = getlistitem;
|
|
}
|
|
else if (is_tupleobject(argv)) {
|
|
argc = gettuplesize(argv);
|
|
getitem = gettupleitem;
|
|
}
|
|
else
|
|
goto badarg;
|
|
|
|
argvlist = NEW(char *, argc+1);
|
|
if (argvlist == NULL)
|
|
return NULL;
|
|
for (i = 0; i < argc; i++) {
|
|
object *arg;
|
|
if (!getstrarg((*getitem)(argv, i), &arg)) {
|
|
DEL(argvlist);
|
|
goto badarg;
|
|
}
|
|
argvlist[i] = getstringvalue(arg);
|
|
}
|
|
argvlist[argc] = NULL;
|
|
|
|
execv(getstringvalue(path), argvlist);
|
|
|
|
/* If we get here it's definitely an error */
|
|
|
|
DEL(argvlist);
|
|
return posix_error();
|
|
}
|
|
|
|
static object *
|
|
posix_fork(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
int pid;
|
|
pid = fork();
|
|
if (pid == -1)
|
|
return posix_error();
|
|
return newintobject((long)pid);
|
|
}
|
|
|
|
static object *
|
|
posix_getpid(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
if (!getnoarg(args))
|
|
return NULL;
|
|
return newintobject((long)getpid());
|
|
}
|
|
|
|
static object *
|
|
posix_getpgrp(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
if (!getnoarg(args))
|
|
return NULL;
|
|
return newintobject((long)getpgrp(0));
|
|
}
|
|
|
|
static object *
|
|
posix_getppid(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
if (!getnoarg(args))
|
|
return NULL;
|
|
return newintobject((long)getppid());
|
|
}
|
|
|
|
static object *
|
|
posix_kill(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
int pid, sig;
|
|
if (!getintintarg(args, &pid, &sig))
|
|
return NULL;
|
|
if (kill(pid, sig) == -1)
|
|
return posix_error();
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
posix_popen(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int pclose PROTO((FILE *));
|
|
object *name, *mode;
|
|
FILE *fp;
|
|
if (args == NULL || !is_tupleobject(args) || gettuplesize(args) != 2 ||
|
|
!is_stringobject(name = gettupleitem(args, 0)) ||
|
|
!is_stringobject(mode = gettupleitem(args, 1))) {
|
|
err_setstr(TypeError, "popen() requires 2 string arguments");
|
|
return NULL;
|
|
}
|
|
fp = popen(getstringvalue(name), getstringvalue(mode));
|
|
if (fp == NULL)
|
|
return posix_error();
|
|
/* From now on, ignore SIGPIPE and let the error checking
|
|
do the work. */
|
|
(void) signal(SIGPIPE, SIG_IGN);
|
|
return newopenfileobject(fp, getstringvalue(name),
|
|
getstringvalue(mode), pclose);
|
|
}
|
|
|
|
static object *
|
|
posix_wait(self, args) /* Also waitpid() */
|
|
object *self;
|
|
object *args;
|
|
{
|
|
object *v;
|
|
int pid, sts;
|
|
if (args == NULL)
|
|
pid = wait(&sts);
|
|
else {
|
|
#ifdef NO_WAITPID
|
|
err_setstr(RuntimeError,
|
|
"posix.wait(pid, options) not supported on this system");
|
|
#else
|
|
int options;
|
|
if (!getintintarg(args, &pid, &options))
|
|
return NULL;
|
|
pid = waitpid(pid, &sts, options);
|
|
#endif
|
|
}
|
|
if (pid == -1)
|
|
return posix_error();
|
|
v = newtupleobject(2);
|
|
if (v != NULL) {
|
|
settupleitem(v, 0, newintobject((long)pid));
|
|
settupleitem(v, 1, newintobject((long)sts));
|
|
if (err_occurred()) {
|
|
DECREF(v);
|
|
v = NULL;
|
|
}
|
|
}
|
|
return v;
|
|
}
|
|
|
|
#endif /* MSDOS */
|
|
|
|
#ifndef NO_LSTAT
|
|
|
|
static object *
|
|
posix_lstat(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int lstat PROTO((const char *, struct stat *));
|
|
return posix_do_stat(self, args, lstat);
|
|
}
|
|
|
|
static object *
|
|
posix_readlink(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
char buf[1024]; /* XXX Should use MAXPATHLEN */
|
|
object *path;
|
|
int n;
|
|
if (!getstrarg(args, &path))
|
|
return NULL;
|
|
n = readlink(getstringvalue(path), buf, sizeof buf);
|
|
if (n < 0)
|
|
return posix_error();
|
|
return newsizedstringobject(buf, n);
|
|
}
|
|
|
|
static object *
|
|
posix_symlink(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
extern int symlink PROTO((const char *, const char *));
|
|
return posix_2str(args, symlink);
|
|
}
|
|
|
|
#endif /* NO_LSTAT */
|
|
|
|
|
|
static struct methodlist posix_methods[] = {
|
|
{"chdir", posix_chdir},
|
|
{"chmod", posix_chmod},
|
|
{"getcwd", posix_getcwd},
|
|
#ifndef MSDOS
|
|
{"link", posix_link},
|
|
#endif
|
|
{"listdir", posix_listdir},
|
|
{"mkdir", posix_mkdir},
|
|
{"rename", posix_rename},
|
|
{"rmdir", posix_rmdir},
|
|
{"stat", posix_stat},
|
|
{"system", posix_system},
|
|
#ifndef MSDOS
|
|
{"umask", posix_umask},
|
|
#endif
|
|
{"unlink", posix_unlink},
|
|
{"utime", posix_utime},
|
|
#ifndef MSDOS
|
|
{"_exit", posix__exit},
|
|
{"exec", posix_exec},
|
|
{"fork", posix_fork},
|
|
{"getpid", posix_getpid},
|
|
{"getpgrp", posix_getpgrp},
|
|
{"getppid", posix_getppid},
|
|
{"kill", posix_kill},
|
|
{"popen", posix_popen},
|
|
{"wait", posix_wait},
|
|
#endif
|
|
#ifndef NO_LSTAT
|
|
{"lstat", posix_lstat},
|
|
{"readlink", posix_readlink},
|
|
{"symlink", posix_symlink},
|
|
#endif
|
|
{NULL, NULL} /* Sentinel */
|
|
};
|
|
|
|
|
|
void
|
|
initposix()
|
|
{
|
|
object *m, *d, *v;
|
|
|
|
m = initmodule("posix", posix_methods);
|
|
d = getmoduledict(m);
|
|
|
|
/* Initialize posix.environ dictionary */
|
|
v = convertenviron();
|
|
if (v == NULL || dictinsert(d, "environ", v) != 0)
|
|
fatal("can't define posix.environ");
|
|
DECREF(v);
|
|
|
|
/* Initialize posix.error exception */
|
|
PosixError = newstringobject("posix.error");
|
|
if (PosixError == NULL || dictinsert(d, "error", PosixError) != 0)
|
|
fatal("can't define posix.error");
|
|
}
|
|
|
|
|
|
/* Function used elsewhere to get a file's modification time */
|
|
|
|
long
|
|
getmtime(path)
|
|
char *path;
|
|
{
|
|
struct stat st;
|
|
if (stat(path, &st) != 0)
|
|
return -1;
|
|
else
|
|
return st.st_mtime;
|
|
}
|
|
|
|
|
|
#ifdef MSDOS
|
|
|
|
/* A small "compatibility library" for TurboC under MS-DOS */
|
|
|
|
#include <sir.h>
|
|
#include <io.h>
|
|
#include <dos.h>
|
|
#include <fcntl.h>
|
|
|
|
int
|
|
chmod(path, mode)
|
|
char *path;
|
|
int mode;
|
|
{
|
|
return _chmod(path, 1, mode);
|
|
}
|
|
|
|
int
|
|
utime(path, times)
|
|
char *path;
|
|
time_t times[2];
|
|
{
|
|
struct date dt;
|
|
struct time tm;
|
|
struct ftime dft;
|
|
int fh;
|
|
unixtodos(tv[0].tv_sec,&dt,&tm);
|
|
dft.ft_tsec = tm.ti_sec; dft.ft_min = tm.ti_min;
|
|
dft.ft_hour = tm.ti_hour; dft.ft_day = dt.da_day;
|
|
dft.ft_month = dt.da_mon;
|
|
dft.ft_year = (dt.da_year - 1980); /* this is for TC library */
|
|
|
|
if ((fh = open(getstringvalue(path),O_RDWR)) < 0)
|
|
return posix_error(); /* can't open file to set time */
|
|
if (setftime(fh,&dft) < 0)
|
|
{
|
|
close(fh);
|
|
return posix_error();
|
|
}
|
|
close(fh); /* close the temp handle */
|
|
}
|
|
|
|
#endif /* MSDOS */
|