blob: 1aa23d8c3d751e748981ada1a4c5cce579fea5ab [file] [log] [blame]
// Copyright 2014 The Crashpad Authors. All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <set>
#include <string>
#include <vector>
#include "base/macros.h"
#include "build/build_config.h"
#include "util/misc/initialization_state_dcheck.h"
#if defined(OS_MACOSX)
#include <mach/mach.h>
#include <sys/sysctl.h>
namespace crashpad {
class ProcessInfo {
//! \brief Initializes this object with information about the process whose ID
//! is \a pid.
//! This method must be called successfully prior to calling any other method
//! in this class. This method may only be called once.
//! It is unspecified whether the information that an object of this class
//! returns is loaded at the time Initialize() is called or subsequently, and
//! whether this information is cached in the object or not.
//! \param[in] pid The process ID to obtain information for.
//! \return `true` on success, `false` on failure with a message logged.
bool Initialize(pid_t pid);
#if defined(OS_MACOSX) || DOXYGEN
//! \brief Initializes this object with information about a process based on
//! its Mach task.
//! This method serves as a stand-in for Initialize() and may be called in its
//! place with the same restrictions and considerations.
//! \param[in] task The Mach task to obtain information for.
//! \return `true` on success, `false` on failure with an message logged.
bool InitializeFromTask(task_t task);
//! \return The target task’s process ID.
pid_t ProcessID() const;
//! \return The target task’s parent process ID.
pid_t ParentProcessID() const;
//! \return The target process’ real user ID as would be returned to it by
//! `getuid()`.
uid_t RealUserID() const;
//! \return The target process’ effective user ID as would be returned to it
//! by `geteuid()`.
uid_t EffectiveUserID() const;
//! \return The target process’ saved set-user ID.
uid_t SavedUserID() const;
//! \return the target process’ real group ID as would be returned to it by
//! `getgid()`.
gid_t RealGroupID() const;
//! \return the target process’ effective group ID as would be returned to it
//! by `getegid()`.
gid_t EffectiveGroupID() const;
//! \return The target process’ saved set-group ID.
gid_t SavedGroupID() const;
//! \return the target process’ supplementary group list as would be returned
//! to it by `getgroups()`.
std::set<gid_t> SupplementaryGroups() const;
//! \return All groups that the target process claims membership in, including
//! RealGroupID(), EffectiveGroupID(), SavedGroupID(), and
//! SupplementaryGroups().
std::set<gid_t> AllGroups() const;
//! \brief Determines whether the target process has changed privileges.
//! A process is considered to have changed privileges if it has changed its
//! real, effective, or saved set-user or group IDs with the `setuid()`,
//! `seteuid()`, `setreuid()`, `setgid()`, `setegid()`, or `setregid()` system
//! calls since its most recent `execve()`, or if its privileges changed at
//! `execve()` as a result of executing a setuid or setgid executable.
bool DidChangePrivileges() const;
//! \return `true` if the target task is a 64-bit process.
bool Is64Bit() const;
//! \brief Determines the target process’ start time.
//! \param[out] start_time The time that the process started.
void StartTime(timeval* start_time) const;
//! \brief Obtains the arguments used to launch a process.
//! Whether it is possible to obtain this information for a process with
//! different privileges than the running program is system-dependent.
//! \param[out] argv The process’ arguments as passed to its `main()` function
//! as the \a argv parameter, possibly modified by the process.
//! \return `true` on success, with \a argv populated appropriately.
//! Otherwise, `false` with a message logged.
//! \note This function may spuriously return `false` when used to examine a
//! process that it is calling `exec()`. If examining such a process, call
//! this function in a retry loop with a small (100ns) delay to avoid an
//! erroneous assumption that \a pid is not running.
bool Arguments(std::vector<std::string>* argv) const;
#if defined(OS_MACOSX)
kinfo_proc kern_proc_info_;
InitializationStateDcheck initialized_;
} // namespace crashpad