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/* external.cc: Interface to Cygwin internals from external programs.
Copyright 1997, 1998, 1999, 2000 Cygnus Solutions.
Written by Christopher Faylor <cgf@cygnus.com>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include "fhandler.h"
#include "sync.h"
#include "sigproc.h"
#include "pinfo.h"
#include <exceptions.h>
#include "tty.h"
#include "shared_info.h"
static external_pinfo *
fillout_pinfo (pid_t pid, int winpid)
{
BOOL nextpid;
static external_pinfo ep;
if ((nextpid = !!(pid & CW_NEXTPID)))
pid ^= CW_NEXTPID;
static winpids pids (0);
if (!pids.npids)
pids.init ();
static unsigned int i = 0;
if (!pid)
i = 0;
memset (&ep, 0, sizeof ep);
for (; i < pids.npids;)
{
DWORD thispid = pids[i++];
if (!thispid)
continue;
pinfo p (thispid);
if (!p)
{
if (!winpid)
continue;
ep.pid = thispid;
ep.dwProcessId = cygwin_pid (thispid);
ep.process_state = PID_IN_USE;
ep.ctty = -1;
}
else if (p->pid)
{
ep.ctty = tty_attached (p) ? p->ctty : -1;
ep.pid = p->pid;
ep.ppid = p->ppid;
ep.hProcess = p->hProcess;
ep.dwProcessId = p->dwProcessId;
ep.uid = p->uid;
ep.gid = p->gid;
ep.pgid = p->pgid;
ep.sid = p->sid;
ep.umask = p->umask;
ep.start_time = p->start_time;
ep.rusage_self = p->rusage_self;
ep.rusage_children = p->rusage_children;
strcpy (ep.progname, p->progname);
ep.strace_mask = 0;
ep.strace_file = 0;
ep.process_state = p->process_state;
}
break;
}
if (!ep.pid)
{
i = 0;
pids.reset ();
return 0;
}
return &ep;
}
static DWORD
get_cygdrive_prefixes (char *user, char *system)
{
shared_info *info = cygwin_getshared();
int res = info->mount.get_cygdrive_prefixes(user, system);
return (res == ERROR_SUCCESS) ? 1 : 0;
}
extern "C" DWORD
cygwin_internal (cygwin_getinfo_types t, ...)
{
va_list arg;
va_start (arg, t);
switch (t)
{
case CW_LOCK_PINFO:
return 1;
case CW_UNLOCK_PINFO:
return 1;
case CW_GETTHREADNAME:
return (DWORD) threadname (va_arg (arg, DWORD));
case CW_SETTHREADNAME:
{
char *name = va_arg (arg, char *);
regthread (name, va_arg (arg, DWORD));
return 1;
}
case CW_GETPINFO:
return (DWORD) fillout_pinfo (va_arg (arg, DWORD), 0);
case CW_GETVERSIONINFO:
return (DWORD) cygwin_version_strings;
case CW_READ_V1_MOUNT_TABLES:
/* Upgrade old v1 registry mounts to new location. */
cygwin_shared->mount.import_v1_mounts ();
return 0;
case CW_USER_DATA:
return (DWORD) &__cygwin_user_data;
case CW_PERFILE:
perfile_table = va_arg (arg, struct __cygwin_perfile *);
return 0;
case CW_GET_CYGDRIVE_PREFIXES:
{
char *user = va_arg (arg, char *);
char *system = va_arg (arg, char *);
return get_cygdrive_prefixes (user, system);
}
case CW_GETPINFO_FULL:
return (DWORD) fillout_pinfo (va_arg (arg, pid_t), 1);
case CW_INIT_EXCEPTIONS:
init_exceptions ((exception_list *) arg);
return 0;
default:
return (DWORD) -1;
}
}
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