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/* external.cc: Interface to Cygwin internals from external programs.
Copyright 1997, 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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 <errno.h>
#include "security.h"
#include "fhandler.h"
#include "sigproc.h"
#include "pinfo.h"
#include <exceptions.h>
#include "shared_info.h"
#include "cygwin_version.h"
#include "perprocess.h"
#include "cygerrno.h"
#include "fhandler.h"
#include "path.h"
#include "dtable.h"
#include "cygheap.h"
#include "wincap.h"
#include "heap.h"
#include "cygthread.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);
static unsigned int i;
if (!pids.npids || !nextpid)
{
pids.init (winpid);
i = 0;
}
if (!pid)
i = 0;
memset (&ep, 0, sizeof ep);
while (i < pids.npids)
{
DWORD thispid = pids.winpid (i);
_pinfo *p = pids[i];
i++;
if (!p)
{
if (!nextpid && thispid != (DWORD) pid)
continue;
ep.pid = cygwin_pid (thispid);
ep.dwProcessId = thispid;
ep.process_state = PID_IN_USE;
ep.ctty = -1;
break;
}
else if (nextpid || p->pid == pid || (winpid && thispid == (DWORD) pid))
{
ep.ctty = p->ctty;
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 = 0;
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.version = EXTERNAL_PINFO_VERSION;
ep.process_state = p->process_state;
ep.uid32 = p->uid;
ep.gid32 = p->gid;
break;
}
}
if (!ep.pid)
{
i = 0;
pids.reset ();
return 0;
}
return &ep;
}
static DWORD
get_cygdrive_info (char *user, char *system, char *user_flags,
char *system_flags)
{
int res = mount_table->get_cygdrive_info (user, system, user_flags,
system_flags);
return (res == ERROR_SUCCESS) ? 1 : 0;
}
static DWORD
get_cygdrive_prefixes (char *user, char *system)
{
char user_flags[MAX_PATH];
char system_flags[MAX_PATH];
DWORD res = get_cygdrive_info (user, system, user_flags, system_flags);
return res;
}
extern "C" DWORD
cygwin_internal (cygwin_getinfo_types t, ...)
{
va_list arg;
va_start (arg, t);
if (t != CW_USER_DATA)
{
wincap.init ();
if (!myself)
{
memory_init ();
malloc_init ();
set_myself (1);
}
}
switch (t)
{
case CW_LOCK_PINFO:
return 1;
case CW_UNLOCK_PINFO:
return 1;
case CW_GETTHREADNAME:
return (DWORD) cygthread::name (va_arg (arg, DWORD));
case CW_SETTHREADNAME:
{
set_errno (ENOSYS);
return 0;
}
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:
set_errno (ENOSYS);
return 1;
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;
case CW_GET_CYGDRIVE_INFO:
{
char *user = va_arg (arg, char *);
char *system = va_arg (arg, char *);
char *user_flags = va_arg (arg, char *);
char *system_flags = va_arg (arg, char *);
return get_cygdrive_info (user, system, user_flags, system_flags);
}
case CW_SET_CYGWIN_REGISTRY_NAME:
{
# define cr ((char *) arg)
if (check_null_empty_str_errno (cr))
return (DWORD) NULL;
cygheap->cygwin_regname = (char *) crealloc (cygheap->cygwin_regname,
strlen (cr) + 1);
strcpy (cygheap->cygwin_regname, cr);
case CW_GET_CYGWIN_REGISTRY_NAME:
return (DWORD) cygheap->cygwin_regname;
# undef cr
}
case CW_STRACE_TOGGLE:
{
pid_t pid = va_arg (arg, pid_t);
pinfo p (pid);
if (p)
{
sig_send (p, __SIGSTRACE);
return 0;
}
else
{
set_errno (ESRCH);
return (DWORD) -1;
}
}
case CW_STRACE_ACTIVE:
{
return strace.active;
}
case CW_CYGWIN_PID_TO_WINPID:
{
pinfo p (va_arg (arg, pid_t));
return p ? p->dwProcessId : 0;
}
case CW_EXTRACT_DOMAIN_AND_USER:
{
struct passwd *pw = va_arg (arg, struct passwd *);
char *domain = va_arg (arg, char *);
char *user = va_arg (arg, char *);
extract_nt_dom_user (pw, domain, user);
return 0;
}
default:
return (DWORD) -1;
}
}
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