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