Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 479 insertions, 0 deletions

diff --git a/include/iprt/process.h b/include/iprt/process.h
new file mode 100644
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--- /dev/null
+++ b/include/iprt/process.h
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+/** @file
+ * IPRT - Process Management.
+ */
+
+/*
+ * Copyright (C) 2006-2022 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
+ */
+
+#ifndef IPRT_INCLUDED_process_h
+#define IPRT_INCLUDED_process_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/cdefs.h>
+#include <iprt/types.h>
+
+RT_C_DECLS_BEGIN
+
+/** @defgroup grp_rt_process    RTProc - Process Management
+ * @ingroup grp_rt
+ * @{
+ */
+
+
+/**
+ * Process priority.
+ *
+ * The process priority is used to select how scheduling properties
+ * are assigned to the different thread types (see THREADTYPE).
+ *
+ * In addition to using the policy assigned to the process at startup (DEFAULT)
+ * it is possible to change the process priority at runtime. This allows for
+ * a GUI, resource manager or admin to adjust the general priority of a task
+ * without upsetting the fine-tuned priority of the threads within.
+ */
+typedef enum RTPROCPRIORITY
+{
+    /** Invalid priority. */
+    RTPROCPRIORITY_INVALID = 0,
+    /** Default priority.
+     * Derive the scheduling policy from the priority of the RTR3Init()
+     * and RTProcSetPriority() callers and the rights the process have
+     * to alter its own priority.
+     */
+    RTPROCPRIORITY_DEFAULT,
+    /** Flat priority.
+     * Assumes a scheduling policy which puts the process at the default priority
+     * and with all thread at the same priority.
+     */
+    RTPROCPRIORITY_FLAT,
+    /** Low priority.
+     * Assumes a scheduling policy which puts the process mostly below the
+     * default priority of the host OS.
+     */
+    RTPROCPRIORITY_LOW,
+    /** Normal priority.
+     * Assume a scheduling policy which shares the CPU resources fairly with
+     * other processes running with the default priority of the host OS.
+     */
+    RTPROCPRIORITY_NORMAL,
+    /** High priority.
+     * Assumes a scheduling policy which puts the task above the default
+     * priority of the host OS. This policy might easily cause other tasks
+     * in the system to starve.
+     */
+    RTPROCPRIORITY_HIGH,
+    /** Last priority, used for validation. */
+    RTPROCPRIORITY_LAST
+} RTPROCPRIORITY;
+
+
+/**
+ * Get the current process identifier.
+ *
+ * @returns Process identifier.
+ */
+RTDECL(RTPROCESS) RTProcSelf(void);
+
+
+#ifdef IN_RING0
+/**
+ * Get the current process handle.
+ *
+ * @returns Ring-0 process handle.
+ */
+RTR0DECL(RTR0PROCESS) RTR0ProcHandleSelf(void);
+#endif
+
+
+/**
+ * Translate a signal number to a short name on the form SIGXXXX.
+ *
+ * If the signal is not known, it will be formatted as a number into one of
+ * several static buffers.  This means that there could be concurrency issues if
+ * this suddenly happens on multiple threads, though that is unlikely.
+ *
+ * @returns Readonly string naming the signal.
+ * @param   iSignal         The signal to name.
+ */
+RTDECL(const char *) RTProcSignalName(int iSignal);
+
+#ifdef IN_RING3
+
+/**
+ * Attempts to alter the priority of the current process.
+ *
+ * @returns iprt status code.
+ * @param   enmPriority     The new priority.
+ */
+RTR3DECL(int) RTProcSetPriority(RTPROCPRIORITY enmPriority);
+
+/**
+ * Gets the current priority of this process.
+ *
+ * @returns The priority (see RTPROCPRIORITY).
+ */
+RTR3DECL(RTPROCPRIORITY) RTProcGetPriority(void);
+
+/**
+ * Create a child process.
+ *
+ * @returns iprt status code.
+ * @param   pszExec     Executable image to use to create the child process.
+ * @param   papszArgs   Pointer to an array of arguments to the child. The array terminated by an entry containing NULL.
+ * @param   Env         Handle to the environment block for the child.
+ * @param   fFlags      Flags, one of the RTPROC_FLAGS_* defines.
+ * @param   pProcess    Where to store the process identifier on successful return.
+ *                      The content is not changed on failure. NULL is allowed.
+ */
+RTR3DECL(int)   RTProcCreate(const char *pszExec, const char * const *papszArgs, RTENV Env, unsigned fFlags, PRTPROCESS pProcess);
+
+
+/**
+ * Create a child process.
+ *
+ * @returns IPRT status code.
+ *
+ * @param   pszExec     Executable image to use to create the child process.
+ * @param   papszArgs   Pointer to an array of arguments to the child.  The
+ *                      array terminated by an entry containing NULL.
+ * @param   hEnv        Handle to the environment block for the child.  Pass
+ *                      RTENV_DEFAULT to use the environment of the current
+ *                      process.
+ * @param   fFlags      Flags, one of the RTPROC_FLAGS_* defines.
+ * @param   phStdIn     The standard in handle to assign the new process. Pass
+ *                      NULL to use the same as the current process.  If the
+ *                      handle is NIL, we'll close the standard input of the
+ *                      guest.
+ * @param   phStdOut    The standard out handle to assign the new process.  Pass
+ *                      NULL to use the same as the current process.  If the
+ *                      handle is NIL, we'll close the standard output of the
+ *                      guest.
+ * @param   phStdErr    The standard error handle to assign the new process.  Pass
+ *                      NULL to use the same as the current process.  If the
+ *                      handle is NIL, we'll close the standard error of the
+ *                      guest.
+ * @param   pszAsUser   User to run the process as.  Pass NULL to use the same
+ *                      user as the current process.
+ *                      Windows: Use user\@domain (UPN, User Principal Name)
+ *                      format to specify a domain.
+ * @param   pszPassword Password to use to authenticate @a pszAsUser.  Must be
+ *                      NULL wif pszAsUser is NULL.  Whether this is actually
+ *                      used or not depends on the platform.
+ * @param   pvExtraData Points to additional data as per @a fFlags:
+ *                          - RTPROC_FLAGS_DESIRED_SESSION_ID: Pointing to a
+ *                            uint32_t variable with the desired session ID.
+ * @param   phProcess   Where to store the process handle on successful return.
+ *                      The content is not changed on failure.  NULL is allowed.
+ *
+ * @remarks The handles does not have to be created as inheritable, but it
+ *          doesn't hurt if they are as it may avoid race conditions on some
+ *          platforms.
+ *
+ * @remarks The as-user feature isn't supported/implemented on all platforms and
+ *          will cause a-yet-to-be-determined-error-status on these.
+ */
+RTR3DECL(int)   RTProcCreateEx(const char *pszExec, const char * const *papszArgs, RTENV hEnv, uint32_t fFlags,
+                               PCRTHANDLE phStdIn, PCRTHANDLE phStdOut, PCRTHANDLE phStdErr, const char *pszAsUser,
+                               const char *pszPassword, void *pvExtraData, PRTPROCESS phProcess);
+
+/** @name RTProcCreate and RTProcCreateEx flags
+ * @{ */
+/** Detach the child process from the parents process tree and process group,
+ * session or/and console (depends on the platform what's done applicable).
+ *
+ * The new process will not be a direct decendent of the parent and it will not
+ * be possible to wait for it, i.e. @a phProcess shall be NULL. */
+#define RTPROC_FLAGS_DETACHED               RT_BIT(0)
+/** Don't show the started process.
+ * This is a Windows (and maybe OS/2) concept, do not use on other platforms. */
+#define RTPROC_FLAGS_HIDDEN                 RT_BIT(1)
+/** Use special code path for starting child processes from a service (daemon).
+ * This is a windows concept for dealing with the so called "Session 0"
+ * isolation which was introduced with Windows Vista. Do not use on other
+ * platforms. */
+#define RTPROC_FLAGS_SERVICE                RT_BIT(2)
+/** Suppress changing the process contract id for the child process
+ * on Solaris.  Without this flag the contract id is always changed, as that's
+ * the more frequently used case. */
+#define RTPROC_FLAGS_SAME_CONTRACT          RT_BIT(3)
+/** Load user profile data when executing a process.
+ * This redefines the meaning of RTENV_DEFAULT to the profile environment.  See
+ * also RTPROC_FLAGS_ONLY_BASIC_PROFILE */
+#define RTPROC_FLAGS_PROFILE                RT_BIT(4)
+/** Create process without a console window.
+ * This is a Windows (and OS/2) concept, do not use on other platforms. */
+#define RTPROC_FLAGS_NO_WINDOW              RT_BIT(5)
+/** Search the PATH for the executable.  */
+#define RTPROC_FLAGS_SEARCH_PATH            RT_BIT(6)
+/** Don't quote and escape arguments on Windows and similar platforms where a
+ * command line is passed to the child process instead of an argument vector,
+ * just join up argv with a space between each.  Ignored on platforms
+ * passing argument the vector. */
+#define RTPROC_FLAGS_UNQUOTED_ARGS          RT_BIT(7)
+/** Consider hEnv an environment change record to be applied to RTENV_DEFAULT.
+ * If hEnv is RTENV_DEFAULT, the flag has no effect. */
+#define RTPROC_FLAGS_ENV_CHANGE_RECORD      RT_BIT(8)
+/** Create process using the current impersonated thread token.
+ * Caller should also specify RTPROC_FLAGS_SERVICE and RTPROC_FLAGS_PROFILE.
+ * Windows only flag, ignored everywhere else. */
+#define RTPROC_FLAGS_AS_IMPERSONATED_TOKEN  RT_BIT(9)
+/** Hint that we don't expect to ever want to wait on the process. */
+#define RTPROC_FLAGS_NO_WAIT                RT_BIT(10)
+/** For use with RTPROC_FLAGS_SERVICE to specify a desired session ID
+ * (Windows only, ignored elsewhere).  The @a pvExtraData argument points to
+ * a uint32_t containing the session ID, UINT32_MAX means any session.
+ * Can not be set with RTPROC_FLAGS_TOKEN_SUPPLIED */
+#define RTPROC_FLAGS_DESIRED_SESSION_ID     RT_BIT(11)
+/** This is a modifier to RTPROC_FLAGS_PROFILE on unix systems that makes it
+ * skip trying to dump the environment of a login shell. */
+#define RTPROC_FLAGS_ONLY_BASIC_PROFILE     RT_BIT(12)
+/** Don't translate arguments to the (guessed) child process codeset.
+ * This is ignored on Windows as it is using UTF-16. */
+#define RTPROC_FLAGS_UTF8_ARGV              RT_BIT_32(13)
+/** Create process using supplied token. The @a pvExtraData argument points to
+ * a HANDLE containing the token used as user credentials for process creation.
+ * Can not be set with RTPROC_FLAGS_DESIRED_SESSION_ID.
+ * Windows only flag, ignored everywhere else. */
+#define RTPROC_FLAGS_TOKEN_SUPPLIED         RT_BIT(14)
+
+/** Valid flag mask. */
+#define RTPROC_FLAGS_VALID_MASK             UINT32_C(0x7fff)
+/** @}  */
+
+
+/**
+ * Process exit reason.
+ */
+typedef enum RTPROCEXITREASON
+{
+    /** Normal exit. iStatus contains the exit code. */
+    RTPROCEXITREASON_NORMAL = 1,
+    /** Any abnormal exit. iStatus is undefined. */
+    RTPROCEXITREASON_ABEND,
+    /** Killed by a signal. The iStatus field contains the signal number. */
+    RTPROCEXITREASON_SIGNAL
+} RTPROCEXITREASON;
+
+/**
+ * Process exit status.
+ */
+typedef struct RTPROCSTATUS
+{
+    /** The process exit status if the exit was a normal one. */
+    int                 iStatus;
+    /** The reason the process terminated. */
+    RTPROCEXITREASON    enmReason;
+} RTPROCSTATUS;
+/** Pointer to a process exit status structure. */
+typedef RTPROCSTATUS *PRTPROCSTATUS;
+/** Pointer to a const process exit status structure. */
+typedef const RTPROCSTATUS *PCRTPROCSTATUS;
+
+
+/** Flags for RTProcWait().
+ * @{ */
+/** Block indefinitly waiting for the process to exit. */
+#define RTPROCWAIT_FLAGS_BLOCK      0
+/** Don't block, just check if the process have exited. */
+#define RTPROCWAIT_FLAGS_NOBLOCK    1
+/** @} */
+
+/**
+ * Waits for a process, resumes on interruption.
+ *
+ * @returns VINF_SUCCESS when the status code for the process was collected and
+ *          put in *pProcStatus.
+ * @returns VERR_PROCESS_NOT_FOUND if the specified process wasn't found.
+ * @returns VERR_PROCESS_RUNNING when the RTPROCWAIT_FLAGS_NOBLOCK and the
+ *          process haven't exited yet.
+ *
+ * @param   Process         The process to wait for.
+ * @param   fFlags          The wait flags, any of the RTPROCWAIT_FLAGS_ \#defines.
+ * @param   pProcStatus     Where to store the exit status on success.
+ *                          Optional.
+ */
+RTR3DECL(int) RTProcWait(RTPROCESS Process, unsigned fFlags, PRTPROCSTATUS pProcStatus);
+
+/**
+ * Waits for a process, returns on interruption.
+ *
+ * @returns VINF_SUCCESS when the status code for the process was collected and
+ *          put in *pProcStatus.
+ * @returns VERR_PROCESS_NOT_FOUND if the specified process wasn't found.
+ * @returns VERR_PROCESS_RUNNING when the RTPROCWAIT_FLAGS_NOBLOCK and the
+ *          process haven't exited yet.
+ * @returns VERR_INTERRUPTED when the wait was interrupted by the arrival of a
+ *          signal or other async event.
+ *
+ * @param   Process         The process to wait for.
+ * @param   fFlags          The wait flags, any of the RTPROCWAIT_FLAGS_ \#defines.
+ * @param   pProcStatus     Where to store the exit status on success.
+ *                          Optional.
+ */
+RTR3DECL(int) RTProcWaitNoResume(RTPROCESS Process, unsigned fFlags, PRTPROCSTATUS pProcStatus);
+
+/**
+ * Terminates (kills) a running process.
+ *
+ * @returns IPRT status code.
+ * @param   Process     The process to terminate.
+ */
+RTR3DECL(int) RTProcTerminate(RTPROCESS Process);
+
+/**
+ * Gets the processor affinity mask of the current process.
+ *
+ * @returns The affinity mask.
+ */
+RTR3DECL(uint64_t) RTProcGetAffinityMask(void);
+
+/**
+ * Gets the short process name.
+ *
+ * @returns Pointer to read-only name string.
+ * @note    IPRT must've been initialized or the string will be empty.
+ */
+RTR3DECL(const char *) RTProcShortName(void);
+
+/**
+ * Gets the path to the executable image of the current process.
+ *
+ * @returns Pointer to read-only path string.
+ * @note    IPRT must've been initialized or the string will be empty.
+ */
+RTR3DECL(const char *) RTProcExecutablePath(void);
+
+/**
+ * Gets a copy of the path to the executable image of the current process.
+ *
+ * @returns pszExecPath on success. NULL on buffer overflow or other errors.
+ *
+ * @param   pszExecPath     Where to store the path.
+ * @param   cbExecPath      The size of the buffer.
+ * @note    IPRT must've been initialized or the string will be empty.
+ */
+RTR3DECL(char *) RTProcGetExecutablePath(char *pszExecPath, size_t cbExecPath);
+
+/**
+ * Daemonize the current process, making it a background process.
+ *
+ * The way this work is that it will spawn a detached / backgrounded /
+ * daemonized / call-it-what-you-want process that isn't a direct child of the
+ * current process.  The spawned will have the same arguments a the caller,
+ * except that the @a pszDaemonizedOpt is appended to prevent that the new
+ * process calls this API again.
+ *
+ * The new process will have the standard handles directed to/from the
+ * bitbucket.
+ *
+ * @returns IPRT status code.  On success it is normal for the caller to exit
+ *          the process by returning from main().
+ *
+ * @param   papszArgs           The argument vector of the calling process.
+ * @param   pszDaemonizedOpt    The daemonized option.  This is appended to the
+ *                              end of the parameter list of the daemonized process.
+ */
+RTR3DECL(int)   RTProcDaemonize(const char * const *papszArgs, const char *pszDaemonizedOpt);
+
+/**
+ * Daemonize the current process, making it a background process. The current
+ * process will exit if daemonizing is successful.
+ *
+ * @returns IPRT status code.   On success it will only return in the child
+ *          process, the parent will exit.  On failure, it will return in the
+ *          parent process and no child has been spawned.
+ *
+ * @param   fNoChDir    Pass false to change working directory to "/".
+ * @param   fNoClose    Pass false to redirect standard file streams to the null device.
+ * @param   pszPidfile  Path to a file to write the process id of the daemon
+ *                      process to. Daemonizing will fail if this file already
+ *                      exists or cannot be written. May be NULL.
+ */
+RTR3DECL(int)   RTProcDaemonizeUsingFork(bool fNoChDir, bool fNoClose, const char *pszPidfile);
+
+/**
+ * Check if the given process is running on the system.
+ *
+ * This check is case sensitive on most systems, except for Windows, OS/2 and
+ * Darwin.
+ *
+ * @returns true if the process is running & false otherwise.
+ * @param   pszName     Process name to search for. If no path is given only the
+ *                      filename part of the running process set will be
+ *                      matched. If a path is specified, the full path will be
+ *                      matched.
+ */
+RTR3DECL(bool)  RTProcIsRunningByName(const char *pszName);
+
+/**
+ * Queries the parent process ID.
+ *
+ * @returns IPRT status code
+ * @param   hProcess     The process to query the parent of.
+ * @param   phParent     Where to return the parent process ID.
+ */
+RTR3DECL(int) RTProcQueryParent(RTPROCESS hProcess, PRTPROCESS phParent);
+
+/**
+ * Query the username of the given process.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_BUFFER_OVERFLOW if the given buffer size is to small for the username.
+ * @param   hProcess     The process handle to query the username for.
+ *                       NIL_PROCESS is an alias for the current process.
+ * @param   pszUser      Where to store the user name on success.
+ * @param   cbUser       The size of the user name buffer.
+ * @param   pcbUser      Where to store the username length on success
+ *                       or the required buffer size if VERR_BUFFER_OVERFLOW
+ *                       is returned.
+ */
+RTR3DECL(int)   RTProcQueryUsername(RTPROCESS hProcess, char *pszUser, size_t cbUser, size_t *pcbUser);
+
+/**
+ * Query the username of the given process allocating the string for the username.
+ *
+ * @returns IPRT status code.
+ * @param   hProcess     The process handle to query the username for.
+ * @param   ppszUser     Where to store the pointer to the string containing
+ *                       the username on success. Free with RTStrFree().
+ */
+RTR3DECL(int)   RTProcQueryUsernameA(RTPROCESS hProcess, char **ppszUser);
+
+#endif /* IN_RING3 */
+
+/** @} */
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_process_h */
+