forked from OSchip/llvm-project
Enable Host::LaunchProcess on Linux
- move LaunchProcessPosixSpawn() and Host::LaunchProcess() from freebsd host plugin to common (linux/freebsd section) - modify MonitorChildProcessThreadFunction to use pid_t from sys/types.h to avoid Linux/FreeBSD/Mac warnings when calling waitpid() llvm-svn: 189404
This commit is contained in:
Daniel Malea
parent
e4a0cac4a8
commit
4244cbd9be
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@ -33,6 +33,7 @@
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#endif
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#if defined (__linux__) || defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
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#include <spawn.h>
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#include <sys/wait.h>
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#include <sys/syscall.h>
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#endif
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@ -47,6 +48,7 @@
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#include "lldb/Core/Debugger.h"
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#include "lldb/Core/Error.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Core/ThreadSafeSTLMap.h"
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#include "lldb/Host/Config.h"
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@ -55,15 +57,13 @@
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#include "lldb/Host/Mutex.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/TargetList.h"
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#include "lldb/Utility/CleanUp.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace lldb;
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using namespace lldb_private;
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@ -91,7 +91,7 @@ Host::StartMonitoringChildProcess
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{
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lldb::thread_t thread = LLDB_INVALID_HOST_THREAD;
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MonitorInfo * info_ptr = new MonitorInfo();
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info_ptr->pid = pid;
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info_ptr->callback = callback;
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info_ptr->callback_baton = callback_baton;
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@ -147,9 +147,11 @@ MonitorChildProcessThreadFunction (void *arg)
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const Host::MonitorChildProcessCallback callback = info->callback;
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void * const callback_baton = info->callback_baton;
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const lldb::pid_t pid = info->pid;
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const bool monitor_signals = info->monitor_signals;
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assert (info->pid <= UINT32_MAX);
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const ::pid_t pid = monitor_signals ? -1 * info->pid : info->pid;
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delete info;
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int status = -1;
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@ -162,12 +164,12 @@ MonitorChildProcessThreadFunction (void *arg)
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{
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log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
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if (log)
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log->Printf("%s ::wait_pid (pid = %" PRIu64 ", &status, options = %i)...", function, pid, options);
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log->Printf("%s ::wait_pid (pid = %" PRIi32 ", &status, options = %i)...", function, pid, options);
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// Wait for all child processes
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::pthread_testcancel ();
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// Get signals from all children with same process group of pid
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const lldb::pid_t wait_pid = ::waitpid (-1*pid, &status, options);
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const ::pid_t wait_pid = ::waitpid (pid, &status, options);
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::pthread_testcancel ();
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if (wait_pid == -1)
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@ -218,7 +220,7 @@ MonitorChildProcessThreadFunction (void *arg)
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log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS);
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if (log)
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log->Printf ("%s ::waitpid (pid = %" PRIu64 ", &status, options = %i) => pid = %" PRIu64 ", status = 0x%8.8x (%s), signal = %i, exit_state = %i",
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log->Printf ("%s ::waitpid (pid = %" PRIi32 ", &status, options = %i) => pid = %" PRIi32 ", status = 0x%8.8x (%s), signal = %i, exit_state = %i",
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function,
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wait_pid,
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options,
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@ -1479,14 +1481,18 @@ Host::RunShellCommand (const char *command,
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// get called when the process dies. We release the unique pointer as it
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// doesn't need to delete the ShellInfo anymore.
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ShellInfo *shell_info = shell_info_ap.release();
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TimeValue *timeout_ptr = nullptr;
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TimeValue timeout_time(TimeValue::Now());
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timeout_time.OffsetWithSeconds(timeout_sec);
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if (timeout_sec > 0) {
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timeout_time.OffsetWithSeconds(timeout_sec);
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timeout_ptr = &timeout_time;
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}
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bool timed_out = false;
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shell_info->process_reaped.WaitForValueEqualTo(true, &timeout_time, &timed_out);
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shell_info->process_reaped.WaitForValueEqualTo(true, timeout_ptr, &timed_out);
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if (timed_out)
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{
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error.SetErrorString("timed out waiting for shell command to complete");
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// Kill the process since it didn't complete withint the timeout specified
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Kill (pid, SIGKILL);
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// Wait for the monitor callback to get the message
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@ -1533,6 +1539,205 @@ Host::RunShellCommand (const char *command,
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return error;
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}
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#if defined(__linux__) or defined(__FreeBSD__)
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// The functions below implement process launching via posix_spawn() for Linux
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// and FreeBSD.
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// The posix_spawn() and posix_spawnp() functions first appeared in FreeBSD 8.0,
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static Error
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LaunchProcessPosixSpawn (const char *exe_path, ProcessLaunchInfo &launch_info, ::pid_t &pid)
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{
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Error error;
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_HOST | LIBLLDB_LOG_PROCESS));
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assert(exe_path);
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assert(!launch_info.GetFlags().Test (eLaunchFlagDebug));
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posix_spawnattr_t attr;
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error.SetError( ::posix_spawnattr_init (&attr), eErrorTypePOSIX);
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error.LogIfError(log, "::posix_spawnattr_init ( &attr )");
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if (error.Fail())
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return error;
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// Make a quick class that will cleanup the posix spawn attributes in case
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// we return in the middle of this function.
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lldb_utility::CleanUp <posix_spawnattr_t *, int> posix_spawnattr_cleanup(&attr, posix_spawnattr_destroy);
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sigset_t no_signals;
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sigset_t all_signals;
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sigemptyset (&no_signals);
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sigfillset (&all_signals);
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::posix_spawnattr_setsigmask(&attr, &all_signals);
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::posix_spawnattr_setsigdefault(&attr, &no_signals);
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short flags = POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK;
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error.SetError( ::posix_spawnattr_setflags (&attr, flags), eErrorTypePOSIX);
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error.LogIfError(log, "::posix_spawnattr_setflags ( &attr, flags=0x%8.8x )", flags);
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if (error.Fail())
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return error;
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const size_t num_file_actions = launch_info.GetNumFileActions ();
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posix_spawn_file_actions_t file_actions, *file_action_ptr = NULL;
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// Make a quick class that will cleanup the posix spawn attributes in case
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// we return in the middle of this function.
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lldb_utility::CleanUp <posix_spawn_file_actions_t *, int>
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posix_spawn_file_actions_cleanup (file_action_ptr, NULL, posix_spawn_file_actions_destroy);
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if (num_file_actions > 0)
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{
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error.SetError( ::posix_spawn_file_actions_init (&file_actions), eErrorTypePOSIX);
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error.LogIfError(log, "::posix_spawn_file_actions_init ( &file_actions )");
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if (error.Fail())
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return error;
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file_action_ptr = &file_actions;
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posix_spawn_file_actions_cleanup.set(file_action_ptr);
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for (size_t i = 0; i < num_file_actions; ++i)
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{
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const ProcessLaunchInfo::FileAction *launch_file_action = launch_info.GetFileActionAtIndex(i);
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if (launch_file_action &&
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!ProcessLaunchInfo::FileAction::AddPosixSpawnFileAction (&file_actions,
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launch_file_action,
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log,
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error))
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return error;
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}
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}
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// Change working directory if neccessary.
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char current_dir[PATH_MAX];
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current_dir[0] = '\0';
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const char *working_dir = launch_info.GetWorkingDirectory();
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if (working_dir != NULL)
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{
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if (::getcwd(current_dir, sizeof(current_dir)) == NULL)
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{
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error.SetError(errno, eErrorTypePOSIX);
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error.LogIfError(log, "unable to save the current directory");
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return error;
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}
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if (::chdir(working_dir) == -1)
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{
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error.SetError(errno, eErrorTypePOSIX);
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error.LogIfError(log, "unable to change working directory to %s", working_dir);
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return error;
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}
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}
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const char *tmp_argv[2];
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char * const *argv = (char * const*)launch_info.GetArguments().GetConstArgumentVector();
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char * const *envp = (char * const*)launch_info.GetEnvironmentEntries().GetConstArgumentVector();
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// Prepare minimal argument list if we didn't get it from the launch_info structure.
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// We must pass argv into posix_spawnp and it must contain at least two items -
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// pointer to an executable and NULL.
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if (argv == NULL)
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{
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tmp_argv[0] = exe_path;
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tmp_argv[1] = NULL;
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argv = (char * const*)tmp_argv;
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}
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error.SetError (::posix_spawnp (&pid,
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exe_path,
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(num_file_actions > 0) ? &file_actions : NULL,
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&attr,
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argv,
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envp),
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eErrorTypePOSIX);
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error.LogIfError(log, "::posix_spawnp ( pid => %i, path = '%s', file_actions = %p, attr = %p, argv = %p, envp = %p )",
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pid, exe_path, file_action_ptr, &attr, argv, envp);
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// Change back the current directory.
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// NOTE: do not override previously established error from posix_spawnp.
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if (working_dir != NULL && ::chdir(current_dir) == -1 && error.Success())
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{
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error.SetError(errno, eErrorTypePOSIX);
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error.LogIfError(log, "unable to change current directory back to %s",
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current_dir);
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}
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return error;
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}
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Error
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Host::LaunchProcess (ProcessLaunchInfo &launch_info)
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{
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Error error;
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char exe_path[PATH_MAX];
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PlatformSP host_platform_sp (Platform::GetDefaultPlatform ());
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const ArchSpec &arch_spec = launch_info.GetArchitecture();
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FileSpec exe_spec(launch_info.GetExecutableFile());
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FileSpec::FileType file_type = exe_spec.GetFileType();
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if (file_type != FileSpec::eFileTypeRegular)
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{
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lldb::ModuleSP exe_module_sp;
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error = host_platform_sp->ResolveExecutable (exe_spec,
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arch_spec,
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exe_module_sp,
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NULL);
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if (error.Fail())
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return error;
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if (exe_module_sp)
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exe_spec = exe_module_sp->GetFileSpec();
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}
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if (exe_spec.Exists())
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{
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exe_spec.GetPath (exe_path, sizeof(exe_path));
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}
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else
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{
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launch_info.GetExecutableFile().GetPath (exe_path, sizeof(exe_path));
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error.SetErrorStringWithFormat ("executable doesn't exist: '%s'", exe_path);
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return error;
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}
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assert(!launch_info.GetFlags().Test (eLaunchFlagLaunchInTTY));
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::pid_t pid = LLDB_INVALID_PROCESS_ID;
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error = LaunchProcessPosixSpawn(exe_path, launch_info, pid);
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if (pid != LLDB_INVALID_PROCESS_ID)
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{
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// If all went well, then set the process ID into the launch info
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launch_info.SetProcessID(pid);
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// Make sure we reap any processes we spawn or we will have zombies.
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if (!launch_info.MonitorProcess())
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{
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const bool monitor_signals = false;
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StartMonitoringChildProcess (Process::SetProcessExitStatus,
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NULL,
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pid,
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monitor_signals);
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}
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}
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else
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{
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// Invalid process ID, something didn't go well
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if (error.Success())
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error.SetErrorString ("process launch failed for unknown reasons");
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}
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return error;
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}
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#endif // defined(__linux__) or defined(__FreeBSD__)
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#ifndef _WIN32
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size_t
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@ -21,8 +21,6 @@
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#include <sys/exec.h>
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#include <machine/elf.h>
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#include <spawn.h>
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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@ -151,199 +149,6 @@ Host::GetOSVersion(uint32_t &major,
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return status == 2;
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}
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// The posix_spawn() and posix_spawnp() functions first appeared in FreeBSD 8.0.
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static Error
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LaunchProcessPosixSpawn (const char *exe_path, ProcessLaunchInfo &launch_info, ::pid_t &pid)
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{
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Error error;
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LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_HOST | LIBLLDB_LOG_PROCESS));
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assert(exe_path);
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assert(!launch_info.GetFlags().Test (eLaunchFlagDebug));
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posix_spawnattr_t attr;
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error.SetError( ::posix_spawnattr_init (&attr), eErrorTypePOSIX);
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error.LogIfError(log.get(), "::posix_spawnattr_init ( &attr )");
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if (error.Fail())
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return error;
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// Make a quick class that will cleanup the posix spawn attributes in case
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// we return in the middle of this function.
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lldb_utility::CleanUp <posix_spawnattr_t *, int> posix_spawnattr_cleanup(&attr, posix_spawnattr_destroy);
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sigset_t no_signals;
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sigset_t all_signals;
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sigemptyset (&no_signals);
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sigfillset (&all_signals);
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::posix_spawnattr_setsigmask(&attr, &all_signals);
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::posix_spawnattr_setsigdefault(&attr, &no_signals);
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short flags = POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK;
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error.SetError( ::posix_spawnattr_setflags (&attr, flags), eErrorTypePOSIX);
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error.LogIfError(log.get(), "::posix_spawnattr_setflags ( &attr, flags=0x%8.8x )", flags);
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if (error.Fail())
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return error;
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const size_t num_file_actions = launch_info.GetNumFileActions ();
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posix_spawn_file_actions_t file_actions, *file_action_ptr = NULL;
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// Make a quick class that will cleanup the posix spawn attributes in case
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// we return in the middle of this function.
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lldb_utility::CleanUp <posix_spawn_file_actions_t *, int>
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posix_spawn_file_actions_cleanup (file_action_ptr, NULL, posix_spawn_file_actions_destroy);
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if (num_file_actions > 0)
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{
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error.SetError( ::posix_spawn_file_actions_init (&file_actions), eErrorTypePOSIX);
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error.LogIfError(log.get(), "::posix_spawn_file_actions_init ( &file_actions )");
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if (error.Fail())
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return error;
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file_action_ptr = &file_actions;
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posix_spawn_file_actions_cleanup.set(file_action_ptr);
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for (size_t i = 0; i < num_file_actions; ++i)
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{
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const ProcessLaunchInfo::FileAction *launch_file_action = launch_info.GetFileActionAtIndex(i);
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if (launch_file_action &&
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!ProcessLaunchInfo::FileAction::AddPosixSpawnFileAction (&file_actions,
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launch_file_action,
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log.get(),
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error))
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return error;
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}
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}
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// Change working directory if neccessary.
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char current_dir[PATH_MAX];
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current_dir[0] = '\0';
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const char *working_dir = launch_info.GetWorkingDirectory();
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if (working_dir != NULL)
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{
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if (::getcwd(current_dir, sizeof(current_dir)) == NULL)
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{
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error.SetError(errno, eErrorTypePOSIX);
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error.LogIfError(log.get(), "unable to save the current directory");
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return error;
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}
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if (::chdir(working_dir) == -1)
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{
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error.SetError(errno, eErrorTypePOSIX);
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error.LogIfError(log.get(), "unable to change working directory to %s", working_dir);
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return error;
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}
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}
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const char *tmp_argv[2];
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char * const *argv = (char * const*)launch_info.GetArguments().GetConstArgumentVector();
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char * const *envp = (char * const*)launch_info.GetEnvironmentEntries().GetConstArgumentVector();
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|
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// Prepare minimal argument list if we didn't get it from the launch_info structure.
|
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// We must pass argv into posix_spawnp and it must contain at least two items -
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// pointer to an executable and NULL.
|
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if (argv == NULL)
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{
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tmp_argv[0] = exe_path;
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tmp_argv[1] = NULL;
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argv = (char * const*)tmp_argv;
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}
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error.SetError (::posix_spawnp (&pid,
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exe_path,
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(num_file_actions > 0) ? &file_actions : NULL,
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&attr,
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argv,
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envp),
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eErrorTypePOSIX);
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error.LogIfError(log.get(), "::posix_spawnp ( pid => %i, path = '%s', file_actions = %p, attr = %p, argv = %p, envp = %p )",
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pid, exe_path, file_action_ptr, &attr, argv, envp);
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// Change back the current directory.
|
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// NOTE: do not override previously established error from posix_spawnp.
|
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if (working_dir != NULL && ::chdir(current_dir) == -1 && error.Success())
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{
|
||||
error.SetError(errno, eErrorTypePOSIX);
|
||||
error.LogIfError(log.get(), "unable to change current directory back to %s",
|
||||
current_dir);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
Error
|
||||
Host::LaunchProcess (ProcessLaunchInfo &launch_info)
|
||||
{
|
||||
Error error;
|
||||
char exe_path[PATH_MAX];
|
||||
|
||||
PlatformSP host_platform_sp (Platform::GetDefaultPlatform ());
|
||||
|
||||
const ArchSpec &arch_spec = launch_info.GetArchitecture();
|
||||
|
||||
FileSpec exe_spec(launch_info.GetExecutableFile());
|
||||
|
||||
FileSpec::FileType file_type = exe_spec.GetFileType();
|
||||
if (file_type != FileSpec::eFileTypeRegular)
|
||||
{
|
||||
lldb::ModuleSP exe_module_sp;
|
||||
error = host_platform_sp->ResolveExecutable (exe_spec,
|
||||
arch_spec,
|
||||
exe_module_sp,
|
||||
NULL);
|
||||
|
||||
if (error.Fail())
|
||||
return error;
|
||||
|
||||
if (exe_module_sp)
|
||||
exe_spec = exe_module_sp->GetFileSpec();
|
||||
}
|
||||
|
||||
if (exe_spec.Exists())
|
||||
{
|
||||
exe_spec.GetPath (exe_path, sizeof(exe_path));
|
||||
}
|
||||
else
|
||||
{
|
||||
launch_info.GetExecutableFile().GetPath (exe_path, sizeof(exe_path));
|
||||
error.SetErrorStringWithFormat ("executable doesn't exist: '%s'", exe_path);
|
||||
return error;
|
||||
}
|
||||
|
||||
assert(!launch_info.GetFlags().Test (eLaunchFlagLaunchInTTY));
|
||||
|
||||
::pid_t pid = LLDB_INVALID_PROCESS_ID;
|
||||
|
||||
error = LaunchProcessPosixSpawn(exe_path, launch_info, pid);
|
||||
|
||||
if (pid != LLDB_INVALID_PROCESS_ID)
|
||||
{
|
||||
// If all went well, then set the process ID into the launch info
|
||||
launch_info.SetProcessID(pid);
|
||||
|
||||
// Make sure we reap any processes we spawn or we will have zombies.
|
||||
if (!launch_info.MonitorProcess())
|
||||
{
|
||||
const bool monitor_signals = false;
|
||||
StartMonitoringChildProcess (Process::SetProcessExitStatus,
|
||||
NULL,
|
||||
pid,
|
||||
monitor_signals);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Invalid process ID, something didn't go well
|
||||
if (error.Success())
|
||||
error.SetErrorString ("process launch failed for unknown reasons");
|
||||
}
|
||||
return error;
|
||||
}
|
||||
|
||||
bool
|
||||
Host::GetOSBuildString (std::string &s)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -216,14 +216,6 @@ Host::GetOSVersion(uint32_t &major,
|
|||
return status == 3;
|
||||
}
|
||||
|
||||
Error
|
||||
Host::LaunchProcess (ProcessLaunchInfo &launch_info)
|
||||
{
|
||||
Error error;
|
||||
assert(!"Not implemented yet!!!");
|
||||
return error;
|
||||
}
|
||||
|
||||
lldb::DataBufferSP
|
||||
Host::GetAuxvData(lldb_private::Process *process)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue