1 files changed, 128 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/linux/RTProcIsRunningByName-linux.cpp b/src/VBox/Runtime/r3/linux/RTProcIsRunningByName-linux.cpp
new file mode 100644
index 00000000..6049fa1a
--- /dev/null
+++ b/src/VBox/Runtime/r3/linux/RTProcIsRunningByName-linux.cpp
@@ -0,0 +1,128 @@
+/* $Id: RTProcIsRunningByName-linux.cpp $ */
+/** @file
+ * IPRT - RTProcIsRunningByName, Linux implementation.
+ */
+
+/*
+ * Copyright (C) 2009-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * 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, in version 3 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, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define LOG_GROUP RTLOGGROUP_PROCESS
+#include <iprt/process.h>
+#include <iprt/string.h>
+#include <iprt/dir.h>
+#include <iprt/path.h>
+#include <iprt/stream.h>
+#include <iprt/param.h>
+#include <iprt/assert.h>
+
+#include <unistd.h>
+
+
+RTR3DECL(bool) RTProcIsRunningByName(const char *pszName)
+{
+    /*
+     * Quick validation.
+     */
+    if (!pszName)
+        return false;
+
+    bool const fWithPath = RTPathHavePath(pszName);
+
+    /*
+     * Enumerate /proc.
+     */
+    RTDIR hDir;
+    int rc = RTDirOpen(&hDir, "/proc");
+    AssertMsgRCReturn(rc, ("RTDirOpen on /proc failed: rc=%Rrc\n", rc), false);
+    if (RT_SUCCESS(rc))
+    {
+        RTDIRENTRY DirEntry;
+        while (RT_SUCCESS(RTDirRead(hDir, &DirEntry, NULL)))
+        {
+            /*
+             * Filter numeric directory entries only.
+             */
+            if (   (   DirEntry.enmType == RTDIRENTRYTYPE_DIRECTORY
+                    || DirEntry.enmType == RTDIRENTRYTYPE_UNKNOWN)
+                && RTStrToUInt32(DirEntry.szName) > 0)
+            {
+                /*
+                 * Try readlink on exe first since it's more faster and reliable.
+                 * Fall back on reading the first line in cmdline if that fails
+                 * (access errors typically). cmdline is unreliable as it might
+                 * contain whatever the execv caller passes as argv[0].
+                 */
+                char szName[RTPATH_MAX];
+                RTStrPrintf(szName, sizeof(szName), "/proc/%s/exe", &DirEntry.szName[0]);
+                char szExe[RTPATH_MAX];
+                int cchLink = readlink(szName, szExe, sizeof(szExe) - 1);
+                if (    cchLink > 0
+                    &&  (size_t)cchLink < sizeof(szExe))
+                {
+                    szExe[cchLink] = '\0';
+                    rc = VINF_SUCCESS;
+                }
+                else
+                {
+                    RTStrPrintf(szName, sizeof(szName), "/proc/%s/cmdline", &DirEntry.szName[0]);
+                    PRTSTREAM pStream;
+                    rc = RTStrmOpen(szName, "r", &pStream);
+                    if (RT_SUCCESS(rc))
+                    {
+                        rc = RTStrmGetLine(pStream, szExe, sizeof(szExe));
+                        RTStrmClose(pStream);
+                    }
+                }
+                if (RT_SUCCESS(rc))
+                {
+                    /*
+                     * We are interested on the file name part only.
+                     */
+                    char const *pszProcName = fWithPath ? szExe : RTPathFilename(szExe);
+                    if (RTStrCmp(pszProcName, pszName) == 0)
+                    {
+                        /* Found it! */
+                        RTDirClose(hDir);
+                        return true;
+                    }
+                }
+            }
+        }
+        RTDirClose(hDir);
+    }
+
+    return false;
+}
+