start to track Daniel's version

[util-vserver.git] / vserver-start / main.c

diff --git a/vserver-start/main.c b/vserver-start/main.c
deleted file mode 100644 (file)
index c6ec40a..0000000
--- a/vserver-start/main.c
+++ /dev/null
@@ -1,200 +0,0 @@
-// $Id: main.c 2589 2007-08-16 03:06:50Z dhozac $    --*- c -*--
-
-// Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
-//  
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; version 2 of the License.
-//  
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//  
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#include "vserver-start.h"
-#include "vshelper.h"
-#include "pathconfig.h"
-#include "interface.h"
-#include "configuration.h"
-#include "mount.h"
-#include "undo.h"
-
-#include "lib_internal/util.h"
-#include "lib_internal/errinfo.h"
-#include "lib_internal/sys_clone.h"
-#include "lib/vserver.h"
-#include "lib/internal.h"
-
-#include <sys/file.h>
-#include <sched.h>
-#include <signal.h>
-#include <unistd.h>
-#include <sys/socket.h>
-
-#define ENSC_WRAPPERS_VSERVER  1
-#define ENSC_WRAPPERS_SOCKET   1
-#define ENSC_WRAPPERS_UNISTD   1
-#define ENSC_WRAPPERS_FCNTL    1
-#define ENSC_WRAPPERS_STDLIB   1
-#include <ensc_wrappers/wrappers.h>
-
-struct Options                 opts;
-struct Configuration           cfg;
-int                            wrapper_exit_code;
-
-static void
-env2Str(char const **var, char const *env, bool req)
-{
-  char const *         tmp = getenv(env);
-  if (req && tmp==0) {
-    WRITE_MSG(2, "vserver.start: required environment variable $");
-    WRITE_STR(2, env);
-    WRITE_STR(2, " not set; aborting...\n");
-    exit(1);
-  }
-
-  *var = tmp;
-  unsetenv(env);
-}
-
-static void
-env2Bool(bool *var, char const *env, bool req)
-{
-  char const * tmp;
-  env2Str(&tmp, env, req);
-  *var = !(tmp==0 || atoi(tmp)==0);
-}
-
-static void
-initGlobals()
-{
-  env2Str (&opts.VSERVER_DIR,       "VSERVER_DIR",       true);
-  env2Str (&opts.VSERVER_NAME,      "VSERVER_NAME",      true);
-  env2Bool(&opts.OPTION_DEBUG,      "OPTION_DEBUG",      false);
-  env2Bool(&opts.OPTION_DEFAULTTTY, "OPTION_DEFAULTTTY", false);  
-}
-
-static void
-initLock()
-{
-  size_t                       l   = strlen(opts.VSERVER_DIR);
-  char                                 tmp[sizeof(LOCKDIR "/vserver..startup") + l];
-  char *                       ptr = tmp;
-  struct ErrorInformation      err = { .app = 0 };
-  int                          fd;
-
-  ptr  = Xmemcpy(ptr, LOCKDIR "/vserver.", sizeof(LOCKDIR "/vserver.")-1);
-  ((char *)(Xmemcpy(ptr, opts.VSERVER_DIR, l)))[0] = '\0';
-  ptr += canonifyVserverName(ptr);
-  ptr  = Xmemcpy(ptr, ".startup",  sizeof(".startup"));
-  *ptr = '\0';
-
-  if (!lockfile(&fd, tmp, LOCK_EX, 30, &err)) {
-    WRITE_MSG(2, "vserver.start: failed to lock '");
-    WRITE_STR(2, tmp);
-    WRITE_MSG(2, "': ");
-    ErrInfo_writeErrno(&err);
-    exit(1);
-  }
-}
-
-static void
-checkConstraints()
-{
-  xid_t                        xid;
-  bool                 is_running;
-  struct vc_vx_info    info;
-
-  xid = vc_getVserverCtx(opts.VSERVER_DIR, vcCFG_RECENT_FULL,
-                        true, &is_running, vcCTX_XID);
-
-  if (xid!=VC_NOCTX && vc_get_vx_info(xid, &info)!=-1) {
-    WRITE_MSG(2, "vserver.start: vserver '");
-    WRITE_STR(2, opts.VSERVER_NAME);
-    WRITE_MSG(2, "' already running; aborting...\n");
-    exit(1);
-  }
-
-  Vshelper_doSanityCheck();
-}
-
-static void
-setCFlag(xid_t xid, uint_least64_t value)
-{
-  struct vc_ctx_flags  flags = {
-    .flagword = value,
-    .mask     = value
-  };
-
-  Evc_set_cflags(xid, &flags);
-}
-
-int main(int UNUSED argc, char UNUSED *argv[])
-{
-  Cfg_init(&cfg);
-  
-  initGlobals();
-  initLock();
-  checkConstraints();
-
-  int          sync_fd[2];
-  char         c;
-  xid_t                xid;
-  char         buf[sizeof(xid)*3 + 2];
-  PathInfo     cfgdir = { .d = opts.VSERVER_DIR, .l = strlen(opts.VSERVER_DIR) };
-
-  Esocketpair(AF_UNIX, SOCK_STREAM, 0, sync_fd);
-  Efcntl(sync_fd[0], F_SETFD, FD_CLOEXEC);
-  Efcntl(sync_fd[1], F_SETFD, FD_CLOEXEC);
-  
-  getConfiguration(&cfg, &cfgdir);
-  pid_t                pid    = sys_clone(CLONE_NEWNS|SIGCHLD, 0);
-  FatalErrnoError(pid==-1, "sys_clone()");
-  
-  switch (pid) {
-    case 0     :
-      Undo_init();
-      execScriptlets(&cfgdir, opts.VSERVER_NAME, "prepre-start");
-      activateInterfaces(&cfg.interfaces);
-      
-      xid = Evc_ctx_create(cfg.xid, NULL);
-      setCFlag(xid, VC_VXF_INFO_NAMESPACE);
-      
-      mountVserver(&cfg);
-       //      prepareInit(&cfg, &cfgdir);
-
-      Esend(sync_fd[0], &xid, sizeof xid, MSG_NOSIGNAL);
-       // 'pre-start.parent' will be executed now in the parent-context
-      Erecv(sync_fd[0], &c, 1, 0);
-      execScriptlets(&cfgdir, opts.VSERVER_NAME, "pre-start");
-
-      if (cfg.nice)
-       Enice(atoi(cfg.nice));
-      if (opts.OPTION_DEFAULTTTY)
-       setDefaultTTY(&cfgdir, 0);
-
-      
-
-      Undo_detach();
-      break;
-
-    default    :
-      Erecv(sync_fd[1], &xid, sizeof xid, 0);
-      utilvserver_fmt_uint(buf, xid);
-      Esetenv("CHILD_XID", buf, 1);
-      
-      execScriptlets(&cfgdir, opts.VSERVER_NAME, "pre-start.parent");
-      Esend(sync_fd[1], ".", 1, MSG_NOSIGNAL);
-      
-      break;
-  }
-}