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authorcvs2svn <>2014-02-18 19:58:41 +0000
committercvs2svn <>2014-02-18 19:58:41 +0000
commitb5279ecc51ff751ccd052fbb7c20efd529575f7e (patch)
tree64141e96a5d64ae59fb7f410270e4daa41878a03 /winsup/cygserver/client.cc
parenta2a48cb593a9b3cc3f5c63c39f52c32db31cec50 (diff)
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This commit was manufactured by cvs2svn to create tag 'cygwin-pre-user-db'.cygwin-pre-user-db
Sprout from cygwin-1_7_29-release-branchpoint 2014-02-18 19:58:40 UTC cvs2svn 'This commit was manufactured by cvs2svn to create branch 'cygwin-1_7_29' Cherrypick from master 2014-02-08 22:25:11 UTC Corinna Vinschen <corinna@vinschen.de> 'Fix ChangeLog': winsup/cygwin/ChangeLog winsup/cygwin/miscfuncs.cc winsup/cygwin/miscfuncs.h winsup/cygwin/mount.cc Delete: winsup/COPYING winsup/CYGWIN_LICENSE winsup/ChangeLog winsup/Makefile.common winsup/Makefile.in winsup/README winsup/acinclude.m4 winsup/aclocal.m4 winsup/autogen.sh winsup/c++wrap winsup/ccwrap winsup/config.guess winsup/config.sub winsup/configure winsup/configure.ac winsup/configure.cygwin winsup/cygserver/ChangeLog winsup/cygserver/ChangeLog.64bit winsup/cygserver/Makefile.in winsup/cygserver/README winsup/cygserver/aclocal.m4 winsup/cygserver/autogen.sh winsup/cygserver/bsd_helper.cc winsup/cygserver/bsd_helper.h winsup/cygserver/bsd_log.cc winsup/cygserver/bsd_log.h winsup/cygserver/bsd_mutex.cc winsup/cygserver/bsd_mutex.h 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winsup/utils/cygwin-console-helper.cc winsup/utils/dump_setup.cc winsup/utils/dumper.cc winsup/utils/dumper.h winsup/utils/getconf.c winsup/utils/getfacl.c winsup/utils/kill.cc winsup/utils/ldd.cc winsup/utils/ldh.cc winsup/utils/loadlib.h winsup/utils/locale.cc winsup/utils/minidumper.cc winsup/utils/mkgroup.c winsup/utils/mkpasswd.c winsup/utils/module_info.cc winsup/utils/mount.cc winsup/utils/parse_pe.cc winsup/utils/passwd.c winsup/utils/path.cc winsup/utils/path.h winsup/utils/pldd.c winsup/utils/ps.cc winsup/utils/regtool.cc winsup/utils/setfacl.c winsup/utils/setmetamode.c winsup/utils/ssp.c winsup/utils/ssp.txt winsup/utils/strace.cc winsup/utils/testsuite.cc winsup/utils/testsuite.h winsup/utils/tzset.c winsup/utils/umount.cc winsup/utils/utils.xml winsup/utils/wide_path.h
Diffstat (limited to 'winsup/cygserver/client.cc')
-rw-r--r--winsup/cygserver/client.cc536
1 files changed, 0 insertions, 536 deletions
diff --git a/winsup/cygserver/client.cc b/winsup/cygserver/client.cc
deleted file mode 100644
index 63ce421c9..000000000
--- a/winsup/cygserver/client.cc
+++ /dev/null
@@ -1,536 +0,0 @@
-/* client.cc
-
- Copyright 2001, 2002, 2003, 2004, 2008, 2009, 2012, 2013 Red Hat Inc.
-
- Written by Egor Duda <deo@logos-m.ru>
-
-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. */
-
-/* to allow this to link into cygwin and the .dll, a little magic is needed. */
-#ifdef __OUTSIDE_CYGWIN__
-#include "woutsup.h"
-#else
-#include "winsup.h"
-#endif
-
-#include <assert.h>
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#include "cygserver_msg.h"
-#include "cygserver_sem.h"
-#include "cygserver_shm.h"
-#include "cygserver_setpwd.h"
-
-#include "cygserver.h"
-#include "transport.h"
-
-int cygserver_running = CYGSERVER_UNKNOWN; // Nb: inherited by children.
-
-client_request_get_version::client_request_get_version ()
- : client_request (CYGSERVER_REQUEST_GET_VERSION, &version, sizeof (version))
-{
- msglen (0); // No parameters for request.
-
- // verbose: syscall_printf ("created");
-}
-
-/*
- * client_request_get_version::check_version ()
- *
- * The major version and API version numbers must match exactly. An
- * older than expected minor version number is accepted (as long as
- * the first numbers match, that is).
- */
-
-#ifdef __INSIDE_CYGWIN__
-
-bool
-client_request_get_version::check_version () const
-{
- const bool ok = (version.major == CYGWIN_SERVER_VERSION_MAJOR
- && version.api == CYGWIN_SERVER_VERSION_API
- && version.minor <= CYGWIN_SERVER_VERSION_MINOR);
-
- if (!ok)
- syscall_printf (("incompatible version of cygwin server: "
- "client version %d.%d.%d.%d, "
- "server version %ld.%ld.%ld.%ld"),
- CYGWIN_SERVER_VERSION_MAJOR,
- CYGWIN_SERVER_VERSION_API,
- CYGWIN_SERVER_VERSION_MINOR,
- CYGWIN_SERVER_VERSION_PATCH,
- version.major,
- version.api,
- version.minor,
- version.patch);
-
- return ok;
-}
-
-client_request_attach_tty::client_request_attach_tty (DWORD nmaster_pid,
- HANDLE nfrom_master,
- HANDLE nto_master)
- : client_request (CYGSERVER_REQUEST_ATTACH_TTY, &req, sizeof (req))
-{
- req.pid = GetCurrentProcessId ();
- req.master_pid = nmaster_pid;
- req.from_master = nfrom_master;
- req.to_master = nto_master;
-
- syscall_printf (("created: pid = %lu, master_pid = %lu, "
- "from_master = %lu, to_master = %lu"),
- req.pid, req.master_pid, req.from_master, req.to_master);
-}
-#endif /* __INSIDE_CYGWIN__ */
-
-/*
- * client_request_attach_tty::send ()
- *
- * Wraps the base method to provide error handling support. If the
- * reply contains a body but is flagged as an error, close any handles
- * that have been returned by cygserver and then discard the message
- * body, i.e. the client either sees a successful result with handles
- * or an unsuccessful result with no handles.
- */
-
-void
-client_request_attach_tty::send (transport_layer_base * const conn)
-{
- client_request::send (conn);
-
- if (msglen () && error_code ())
- {
- if (from_master ())
- CloseHandle (from_master ());
- if (to_master ())
- CloseHandle (to_master ());
- msglen (0);
- }
-}
-
-client_request::header_t::header_t (const request_code_t request_code,
- const size_t len)
- : request_code (request_code)
-{
- assert (request_code >= 0 && request_code < CYGSERVER_REQUEST_LAST);
- msglen = len;
-}
-
-// FIXME: also check write and read result for -1.
-
-void
-client_request::send (transport_layer_base * const conn)
-{
- assert (conn);
- assert (!(msglen () && !_buf)); // i.e., msglen () implies _buf
- assert (msglen () <= _buflen);
-
- {
- const ssize_t count = conn->write (&_header, sizeof (_header));
-
- if (count != sizeof (_header))
- {
- assert (errno);
- error_code (errno);
- syscall_printf (("request header write failure: "
- "only %ld bytes sent of %ld, "
- "error = %d(%lu)"),
- count, sizeof (_header),
- errno, GetLastError ());
- return;
- }
- }
-
- if (msglen ())
- {
- const ssize_t count = conn->write (_buf, msglen ());
-
- if (count == -1 || (size_t) count != msglen ())
- {
- assert (errno);
- error_code (errno);
- syscall_printf (("request body write failure: "
- "only %ld bytes sent of %ld, "
- "error = %d(%lu)"),
- count, msglen (),
- errno, GetLastError ());
- return;
- }
- }
-
- // verbose: syscall_printf ("request sent (%ld + %ld bytes)",
- // sizeof (_header), msglen ());
-
- {
- const ssize_t count = conn->read (&_header, sizeof (_header));
-
- if (count != sizeof (_header))
- {
- assert (errno);
- error_code (errno);
- syscall_printf (("reply header read failure: "
- "only %ld bytes received of %ld, "
- "error = %d(%lu)"),
- count, sizeof (_header),
- errno, GetLastError ());
- return;
- }
- }
-
- if (msglen () && !_buf)
- {
- system_printf ("no client buffer for reply body: %ld bytes needed",
- msglen ());
- error_code (EINVAL);
- return;
- }
-
- if (msglen () > _buflen)
- {
- system_printf (("client buffer too small for reply body: "
- "have %ld bytes and need %ld"),
- _buflen, msglen ());
- error_code (EINVAL);
- return;
- }
-
- if (msglen ())
- {
- const ssize_t count = conn->read (_buf, msglen ());
-
- if (count == -1 || (size_t) count != msglen ())
- {
- assert (errno);
- error_code (errno);
- syscall_printf (("reply body read failure: "
- "only %ld bytes received of %ld, "
- "error = %d(%lu)"),
- count, msglen (),
- errno, GetLastError ());
- return;
- }
- }
-
- // verbose: syscall_printf ("reply received (%ld + %ld bytes)",
- // sizeof (_header), msglen ());
-}
-
-#ifdef __OUTSIDE_CYGWIN__
-
-client_request_attach_tty::client_request_attach_tty ()
- : client_request (CYGSERVER_REQUEST_ATTACH_TTY, &req, sizeof (req))
-{
-}
-
-/*
- * client_request::handle_request ()
- *
- * A server-side method.
- *
- * This is a factory method for the client_request subclasses. It
- * reads the incoming request header and, based on its request code,
- * creates an instance of the appropriate class.
- *
- * FIXME: If the incoming packet is malformed, the server drops it on
- * the floor. Should it try and generate some sort of reply for the
- * client? As it is, the client will simply get a broken connection.
- *
- * FIXME: also check write and read result for -1.
- */
-
-/* static */ void
-client_request::handle_request (transport_layer_base *const conn,
- process_cache *const cache)
-{
- // verbose: debug_printf ("about to read");
-
- header_t header;
-
- {
- const ssize_t count = conn->read (&header, sizeof (header));
-
- if (count != sizeof (header))
- {
- syscall_printf (("request header read failure: "
- "only %ld bytes received of %ld, "
- "error = %d(%lu)"),
- count, sizeof (header),
- errno, GetLastError ());
- return;
- }
-
- // verbose: debug_printf ("got header (%ld)", count);
- }
-
- client_request *req = NULL;
-
- switch (header.request_code)
- {
- case CYGSERVER_REQUEST_GET_VERSION:
- req = new client_request_get_version;
- break;
- case CYGSERVER_REQUEST_SHUTDOWN:
- req = new client_request_shutdown;
- break;
- case CYGSERVER_REQUEST_ATTACH_TTY:
- req = new client_request_attach_tty;
- break;
- case CYGSERVER_REQUEST_MSG:
- req = new client_request_msg;
- break;
- case CYGSERVER_REQUEST_SEM:
- req = new client_request_sem;
- break;
- case CYGSERVER_REQUEST_SHM:
- req = new client_request_shm;
- break;
- case CYGSERVER_REQUEST_SETPWD:
- req = new client_request_setpwd;
- break;
- default:
- syscall_printf ("unknown request code %d received: request ignored",
- header.request_code);
- return;
- }
-
- assert (req);
-
- req->msglen (header.msglen);
- req->handle (conn, cache);
-
- delete req;
-}
-
-/*
- * client_request::handle ()
- *
- * A server-side method.
- *
- * At this point, the header of an incoming request has been read and
- * an appropriate client_request object constructed. This method has
- * to read the request body into its buffer, if there is such a body,
- * then perform the request and send back the results to the client.
- *
- * FIXME: If the incoming packet is malformed, the server drops it on
- * the floor. Should it try and generate some sort of reply for the
- * client? As it is, the client will simply get a broken connection.
- *
- * FIXME: also check write and read result for -1.
- */
-
-void
-client_request::handle (transport_layer_base *const conn,
- process_cache *const cache)
-{
- if (msglen () && !_buf)
- {
- system_printf ("no buffer for request body: %ld bytes needed",
- msglen ());
- error_code (EINVAL);
- return;
- }
-
- if (msglen () > _buflen)
- {
- system_printf (("buffer too small for request body: "
- "have %ld bytes and need %ld"),
- _buflen, msglen ());
- error_code (EINVAL);
- return;
- }
-
- if (msglen ())
- {
- const ssize_t count = conn->read (_buf, msglen ());
-
- if (count == -1 || (size_t) count != msglen ())
- {
- assert (errno);
- error_code (errno);
- syscall_printf (("request body read failure: "
- "only %ld bytes received of %ld, "
- "error = %d(%lu)"),
- count, msglen (),
- errno, GetLastError ());
- return;
- }
- }
-
- // verbose: syscall_printf ("request received (%ld + %ld bytes)",
- // sizeof (_header), msglen ());
-
- error_code (0); // Overwrites the _header.request_code field.
-
- /*
- * This is not allowed to fail. We must return ENOSYS at a minimum
- * to the client.
- */
- serve (conn, cache);
-
- {
- const ssize_t count = conn->write (&_header, sizeof (_header));
-
- if (count != sizeof (_header))
- {
- assert (errno);
- error_code (errno);
- syscall_printf (("reply header write failure: "
- "only %ld bytes sent of %ld, "
- "error = %d(%lu)"),
- count, sizeof (_header),
- errno, GetLastError ());
- return;
- }
- }
-
- if (msglen ())
- {
- const ssize_t count = conn->write (_buf, msglen ());
-
- if (count == -1 || (size_t) count != msglen ())
- {
- assert (errno);
- error_code (errno);
- syscall_printf (("reply body write failure: "
- "only %ld bytes sent of %ld, "
- "error = %d(%lu)"),
- count, msglen (),
- errno, GetLastError ());
- return;
- }
- }
-
- // verbose: syscall_printf ("reply sent (%ld + %ld bytes)",
- // sizeof (_header), msglen ());
-}
-
-/* The server side implementation of make_request. Very simple. */
-int
-client_request::make_request ()
-{
- transport_layer_base *const transport = create_server_transport ();
- assert (transport);
- if (transport->connect () == -1)
- {
- if (errno)
- error_code (errno);
- else
- error_code (ENOSYS);
- delete transport;
- return -1;
- }
- send (transport);
- delete transport;
- return 0;
-}
-#endif /* __OUTSIDE_CYGWIN__ */
-
-client_request::client_request (request_code_t const id,
- void * const buf,
- size_t const buflen)
- : _header (id, buflen),
- _buf (buf),
- _buflen (buflen)
-{
- assert ((!_buf && !_buflen) || (_buf && _buflen));
-}
-
-client_request::~client_request ()
-{}
-
-#ifdef __INSIDE_CYGWIN__
-int
-client_request::make_request ()
-{
- assert (cygserver_running == CYGSERVER_UNKNOWN \
- || cygserver_running == CYGSERVER_OK \
- || cygserver_running == CYGSERVER_UNAVAIL);
-
- if (cygserver_running == CYGSERVER_UNKNOWN)
- cygserver_init ();
-
- assert (cygserver_running == CYGSERVER_OK \
- || cygserver_running == CYGSERVER_UNAVAIL);
-
- /* Don't retry every request if the server's not there */
- if (cygserver_running == CYGSERVER_UNAVAIL)
- {
- syscall_printf ("cygserver un-available");
- error_code (ENOSYS);
- return -1;
- }
-
- transport_layer_base *const transport = create_server_transport ();
-
- assert (transport);
-
- if (transport->connect () == -1)
- {
- if (errno)
- error_code (errno);
- else
- error_code (ENOSYS);
- delete transport;
- return -1;
- }
-
- // verbose: debug_printf ("connected to server %p", transport);
-
- send (transport);
-
- delete transport;
-
- return 0;
-}
-
-bool
-check_cygserver_available ()
-{
- assert (cygserver_running == CYGSERVER_UNKNOWN \
- || cygserver_running == CYGSERVER_UNAVAIL);
-
- cygserver_running = CYGSERVER_OK; // For make_request ().
-
- client_request_get_version req;
-
- /* This indicates that we failed to connect to cygserver at all but
- * that's fine as cygwin doesn't need it to be running.
- */
- if (req.make_request () == -1)
- return false;
-
- /* We connected to the server but something went wrong after that
- * (in sending the message, in cygserver itself, or in receiving the
- * reply).
- */
- if (req.error_code ())
- {
- syscall_printf ("failure in cygserver version request: %d",
- req.error_code ());
- syscall_printf ("process will continue without cygserver support");
- return false;
- }
-
- return req.check_version ();
-}
-
-void
-cygserver_init ()
-{
- assert (cygserver_running == CYGSERVER_UNKNOWN \
- || cygserver_running == CYGSERVER_OK \
- || cygserver_running == CYGSERVER_UNAVAIL);
-
- if (cygserver_running == CYGSERVER_OK)
- return;
-
- if (!check_cygserver_available ())
- cygserver_running = CYGSERVER_UNAVAIL;
-}
-#endif /* __INSIDE_CYGWIN__ */