--- /dev/null
+// $Id$ --*- c++ -*--
+
+// Copyright (C) 2003 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.
+
+
+#ifndef H_UTIL_VSERVER_LIB_GETINITPID_COMPAT_H
+#define H_UTIL_VSERVER_LIB_GETINITPID_COMPAT_H
+
+#include "getinitpid-legacy.hc"
+
+static inline ALWAYSINLINE pid_t
+vc_X_getinitpid_compat(pid_t pid)
+{
+ return vc_X_getinitpid_legacy(pid);
+}
+
+#endif // H_UTIL_VSERVER_LIB_GETINITPID_COMPAT_H
--- /dev/null
+// $Id$ --*- c++ -*--
+
+// Copyright (C) 2003 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.
+
+
+#ifndef H_UTIL_VSERVER_LIB_GETINITPID_LEGACY_H
+#define H_UTIL_VSERVER_LIB_GETINITPID_LEGACY_H
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include "compat.h"
+
+#include "vserver.h"
+#include "utils-legacy.h"
+
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+
+static pid_t
+vc_X_getinitpid_legacy_internal(pid_t pid)
+{
+ size_t bufsize = utilvserver_getProcEntryBufsize();
+ char buf[bufsize];
+ char *pos = 0;
+
+ pos = utilvserver_getProcEntry(pid, "\ninitpid: ", buf, bufsize);
+
+ if (pos!=0) {
+ if (memcmp(pos,"none",4)==0) return 1;
+ else return atoi(pos);
+ }
+ else return -1;
+}
+
+static pid_t
+vc_X_getinitpid_legacy(pid_t pid)
+{
+ pid_t res;
+ do {
+ res = vc_X_getinitpid_legacy_internal(pid);
+ } while (res==-1 && errno==EAGAIN);
+
+ return res;
+}
+
+#endif // H_UTIL_VSERVER_LIB_GETINITPID_LEGACY_H
--- /dev/null
+// $Id$ --*- c++ -*--
+
+// Copyright (C) 2003 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 "compat.h"
+
+#ifdef VC_ENABLE_API_COMPAT
+# include "getinitpid-compat.hc"
+#endif
+
+#ifdef VC_ENABLE_API_LEGACY
+# include "getinitpid-legacy.hc"
+#endif
+
+#include "vserver.h"
+#include "vserver-internal.h"
+#include "internal.h"
+
+#include <unistd.h>
+#include <sys/types.h>
+
+pid_t
+vc_X_getinitpid(pid_t pid)
+{
+ if (pid==0) pid=getpid();
+
+ CALL_VC(CALL_VC_COMPAT(vc_X_getinitpid, pid),
+ CALL_VC_LEGACY(vc_X_getinitpid, pid));
+}
--- /dev/null
+// $Id$ --*- c++ -*--
+
+// Copyright (C) 2003 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 "compat.h"
+
+#include "utils-legacy.h"
+#include "internal.h"
+#include "vserver-internal.h"
+
+#include <string.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+
+static volatile size_t proc_bufsize = 4097;
+
+size_t
+utilvserver_getProcEntryBufsize()
+{
+ return proc_bufsize;
+}
+
+char *
+utilvserver_getProcEntry(pid_t pid,
+ char *str,
+ char *buf, size_t bufsize)
+{
+ char status_name[ sizeof("/proc/01234/status") ];
+ int fd;
+ size_t len;
+ char * res = 0;
+
+ if (pid<=0 || (uint32_t)(pid)>99999) {
+ errno = EINVAL;
+ return 0;
+ }
+
+ strcpy(status_name, "/proc/");
+ len = utilvserver_uint2str(status_name+sizeof("/proc/")-1,
+ sizeof(status_name)-sizeof("/proc//status")+1,
+ pid, 10);
+ strcpy(status_name+sizeof("/proc/")+len-1, "/status");
+
+ fd = open(status_name, O_RDONLY);
+ if (fd==-1) return 0;
+
+ len = read(fd, buf, bufsize);
+ close(fd);
+
+ if (len<bufsize) {
+ buf[len] = '\0';
+ if (str)
+ res = strstr(buf, str) + strlen(str);
+ else
+ res = buf;
+ }
+ else if (len!=(size_t)-1) {
+ if (proc_bufsize==bufsize)
+ proc_bufsize = bufsize * 2 - 1;
+
+ errno = EAGAIN;
+ }
+
+ return res;
+}
--- /dev/null
+// $Id$ --*- c++ -*--
+
+// Copyright (C) 2003 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.
+
+
+#ifndef H_UTIL_VSERVER_LIB_UTILS_COMPAT_H
+#define H_UTIL_VSERVER_LIB_UTILS_COMPAT_H
+
+#include <stdlib.h>
+#include <sys/types.h>
+
+ // read /proc/<pid>/status into 'buf' which has the size bufsize. When 'str'
+ // is non-null, search this string and return a pointer *after* it. When no
+ // such string could be found, return 0. When 'str' is null return 'buf'.
+ //
+ // When this function fails (result==0) and errno is EAGAIN, the buffersize
+ // was too small and this function should be called again with a larger
+ // buffer.
+char * utilvserver_getProcEntry(pid_t pid, char *str,
+ char *buf, size_t bufsize);
+
+ // Returns the suggested buffersize for reading a /proc/.../status
+ // file. Return-value can change when utilvserver_getProcEntry() was called.
+size_t utilvserver_getProcEntryBufsize();
+
+#endif // H_UTIL_VSERVER_LIB_UTILS_COMPAT_H