#define GNUNET_OS_CONTROL_PIPE "GNUNET_OS_CONTROL_PIPE"
+
struct GNUNET_OS_Process
{
/**
#endif
/**
- * Pipe we use to signal the process (if used).
+ * Pipe we use to signal the process.
+ * NULL if unused, or if process was deemed uncontrollable.
*/
struct GNUNET_DISK_FileHandle *control_pipe;
-
- /**
- * Name of the pipe, NULL for none.
- */
- char *childpipename;
};
static struct GNUNET_OS_Process current_process;
-/* MinGW version of named pipe API */
-#ifdef MINGW
-/**
- * Creates a named pipe/FIFO and opens it
- *
- * @param fn pointer to the name of the named pipe or to NULL
- * @param flags open flags
- * @param perm access permissions
- * @return pipe handle on success, NULL on error
- */
-static struct GNUNET_DISK_FileHandle *
-npipe_create (char **fn, enum GNUNET_DISK_OpenFlags flags,
- enum GNUNET_DISK_AccessPermissions perm)
-{
- struct GNUNET_DISK_FileHandle *ret;
- HANDLE h = NULL;
- DWORD openMode;
- char *name;
-
- openMode = 0;
- if (flags & GNUNET_DISK_OPEN_READWRITE)
- openMode = PIPE_ACCESS_DUPLEX;
- else if (flags & GNUNET_DISK_OPEN_READ)
- openMode = PIPE_ACCESS_INBOUND;
- else if (flags & GNUNET_DISK_OPEN_WRITE)
- openMode = PIPE_ACCESS_OUTBOUND;
- if (flags & GNUNET_DISK_OPEN_FAILIFEXISTS)
- openMode |= FILE_FLAG_FIRST_PIPE_INSTANCE;
-
- while (h == NULL)
- {
- DWORD error_code;
-
- name = NULL;
- if (*fn != NULL)
- {
- GNUNET_asprintf (&name, "\\\\.\\pipe\\%.246s", fn);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to create an instance of named pipe `%s'\n", name);
- /* 1) This might work just fine with UTF-8 strings as it is.
- * 2) This is only used by GNUnet itself, and only with latin names.
- */
- h = CreateNamedPipe (name, openMode | FILE_FLAG_OVERLAPPED,
- PIPE_TYPE_BYTE | PIPE_READMODE_BYTE, 2, 1, 1, 0,
- NULL);
- }
- else
- {
- GNUNET_asprintf (fn, "\\\\.\\pipe\\gnunet-%llu",
- GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
- UINT64_MAX));
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Trying to create unique named pipe `%s'\n",
- *fn);
- h = CreateNamedPipe (*fn,
- openMode | FILE_FLAG_OVERLAPPED |
- FILE_FLAG_FIRST_PIPE_INSTANCE,
- PIPE_TYPE_BYTE | PIPE_READMODE_BYTE, 2, 1, 1, 0,
- NULL);
- }
- error_code = GetLastError ();
- if (name)
- GNUNET_free (name);
- /* don't re-set name to NULL yet */
- if (h == INVALID_HANDLE_VALUE)
- {
- SetErrnoFromWinError (error_code);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Pipe creation have failed because of %d, errno is %d\n", error_code,
- errno);
- if (name == NULL)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Pipe was to be unique, considering re-creation\n");
- GNUNET_free (*fn);
- *fn = NULL;
- if (error_code != ERROR_ACCESS_DENIED && error_code != ERROR_PIPE_BUSY)
- {
- return NULL;
- }
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Pipe name was not unique, trying again\n");
- h = NULL;
- }
- else
- return NULL;
- }
- }
- errno = 0;
-
- ret = GNUNET_malloc (sizeof (*ret));
- ret->h = h;
- ret->type = GNUNET_PIPE;
- ret->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
- ret->oOverlapWrite->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
- return ret;
-}
-
-
-/**
- * Opens already existing named pipe/FIFO
- *
- * @param fn name of an existing named pipe
- * @param flags open flags
- * @return pipe handle on success, NULL on error
- */
-static struct GNUNET_DISK_FileHandle *
-npipe_open (const char *fn, enum GNUNET_DISK_OpenFlags flags)
-{
- struct GNUNET_DISK_FileHandle *ret;
- HANDLE h;
- DWORD openMode;
-
- openMode = 0;
- if (flags & GNUNET_DISK_OPEN_READWRITE)
- openMode = GENERIC_WRITE | GENERIC_READ;
- else if (flags & GNUNET_DISK_OPEN_READ)
- openMode = GENERIC_READ;
- else if (flags & GNUNET_DISK_OPEN_WRITE)
- openMode = GENERIC_WRITE;
-
- h = CreateFile (fn, openMode, 0, NULL, OPEN_EXISTING,
- FILE_FLAG_OVERLAPPED | FILE_READ_ATTRIBUTES, NULL);
- if (h == INVALID_HANDLE_VALUE)
- {
- SetErrnoFromWinError (GetLastError ());
- return NULL;
- }
-
- ret = GNUNET_malloc (sizeof (*ret));
- ret->h = h;
- ret->type = GNUNET_PIPE;
- ret->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
- ret->oOverlapWrite->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
-
- return ret;
-}
-
-#else
-/* UNIX version of named-pipe API */
-
-/**
- * Clean up a named pipe and the directory it was placed in.
- *
- * @param fn name of the pipe
- */
-static void
-cleanup_npipe (const char *fn)
-{
- char *dn;
- char *dp;
-
- if (0 != unlink (fn))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
- dn = GNUNET_strdup (fn);
- dp = dirname (dn);
- if (0 != rmdir (dp))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "rmdir", dp);
- GNUNET_free (dn);
-}
-
-
-/**
- * Setup a named pipe.
- *
- * @param fn where to store the name of the new pipe,
- * if *fn is non-null, the name of the pipe to setup
- * @return GNUNET_OK on success
- */
-static int
-npipe_setup (char **fn)
-{
- if (NULL == *fn)
- {
- /* FIXME: hardwired '/tmp' path... is bad */
- char dir[] = "/tmp/gnunet-pipe-XXXXXX";
-
- if (NULL == mkdtemp (dir))
- {
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "mkdtemp");
- return GNUNET_SYSERR;
- }
- GNUNET_asprintf (fn, "%s/child-control", dir);
- }
- if (-1 == mkfifo (*fn, S_IRUSR | S_IWUSR))
- return GNUNET_SYSERR;
- return GNUNET_OK;
-}
-
-
-/**
- * Open an existing named pipe.
- *
- * @param fn name of the file
- * @param flags flags to use
- * @return NULL on error
- */
-static struct GNUNET_DISK_FileHandle *
-npipe_open (const char *fn,
- enum GNUNET_DISK_OpenFlags flags)
-{
- struct GNUNET_DISK_FileHandle *ret;
- int fd;
- struct timespec req;
- int i;
-
- /* 200 * 5ms = 1s at most */
- for (i=0;i<200;i++)
- {
- fd = open (fn, O_NONBLOCK | ((flags == GNUNET_DISK_OPEN_READ) ? O_RDONLY : O_WRONLY));
- if ( (-1 != fd) || (9 == i) || (flags == GNUNET_DISK_OPEN_READ))
- break;
- /* as this is for killing a child process via pipe and it is conceivable that
- the child process simply didn't finish starting yet, we do some sleeping
- (which is obviously usually not allowed). We can't select on the FD as
- 'open' fails, and we probably shouldn't just "ignore" the error, so wait
- and retry a few times is likely the best method; our process API doesn't
- support continuations, so we need to sleep directly... */
- req.tv_sec = 0;
- req.tv_nsec = 5000000; /* 5ms */
- (void) nanosleep (&req, NULL);
- }
- if (-1 == fd)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- (flags == GNUNET_DISK_OPEN_READ)
- ? _("Failed to open named pipe `%s' for reading: %s\n")
- : _("Failed to open named pipe `%s' for writing: %s\n"),
- fn,
- STRERROR (errno));
- return NULL;
- }
- ret = GNUNET_malloc (sizeof (struct GNUNET_DISK_FileHandle));
- ret->fd = fd;
- return ret;
-}
-#endif
-
-
/**
* This handler is called when there are control data to be read on the pipe
*
{
struct GNUNET_DISK_FileHandle *control_pipe = cls;
char sig;
+ char *pipe_fd;
ssize_t ret;
LOG (GNUNET_ERROR_TYPE_DEBUG, "`%s' invoked because of %d\n", __FUNCTION__,
{
if (-1 == ret)
LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "GNUNET_DISK_file_read");
+ LOG (GNUNET_ERROR_TYPE_WARNING, "Closing control pipe\n");
GNUNET_DISK_file_close (control_pipe);
control_pipe = NULL;
return;
}
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Got control code %d from parent\n", sig);
+ pipe_fd = getenv (GNUNET_OS_CONTROL_PIPE);
+ GNUNET_assert ( (NULL == pipe_fd) || (strlen (pipe_fd) <= 0) );
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Got control code %d from parent via pipe %s\n", sig, pipe_fd);
GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
control_pipe, &parent_control_handler,
control_pipe);
GNUNET_SCHEDULER_TaskContext *tc)
{
const char *env_buf;
+ char *env_buf_end;
struct GNUNET_DISK_FileHandle *control_pipe;
+ uint64_t pipe_fd;
env_buf = getenv (GNUNET_OS_CONTROL_PIPE);
- if ( (env_buf == NULL) || (strlen (env_buf) <= 0) )
+ if ( (NULL == env_buf) || (strlen (env_buf) <= 0) )
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Not installing a handler because $%s is empty\n",
GNUNET_OS_CONTROL_PIPE);
- putenv ("GNUNET_OS_CONTROL_PIPE=");
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
+ return;
+ }
+ errno = 0;
+ pipe_fd = strtoull (env_buf, &env_buf_end, 16);
+ if ((0 != errno) || (env_buf == env_buf_end))
+ {
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "strtoull", env_buf);
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
return;
}
- control_pipe =
- npipe_open (env_buf, GNUNET_DISK_OPEN_READ);
+#if !defined (WINDOWS)
+ if (pipe_fd >= FD_SETSIZE)
+#else
+ if ((FILE_TYPE_UNKNOWN == GetFileType ((HANDLE) (uintptr_t) pipe_fd))
+ && (0 != GetLastError ()))
+#endif
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "GNUNET_OS_CONTROL_PIPE `%s' contains garbage?\n", env_buf);
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
+ return;
+ }
+#if WINDOWS
+ control_pipe = GNUNET_DISK_get_handle_from_w32_handle ((HANDLE) (uintptr_t) pipe_fd);
+#else
+ control_pipe = GNUNET_DISK_get_handle_from_int_fd ((int) pipe_fd);
+#endif
if (NULL == control_pipe)
{
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "open", env_buf);
- putenv ("GNUNET_OS_CONTROL_PIPE=");
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
return;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Adding parent control handler pipe `%s' to the scheduler\n", env_buf);
GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL, control_pipe,
&parent_control_handler, control_pipe);
- putenv ("GNUNET_OS_CONTROL_PIPE=");
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
}
char csig;
csig = (char) sig;
-#if !WINDOWS
- if ( (NULL == proc->control_pipe) &&
- (NULL != proc->childpipename) )
- proc->control_pipe = npipe_open (proc->childpipename,
- GNUNET_DISK_OPEN_WRITE);
-#endif
if (NULL != proc->control_pipe)
{
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending signal %d to pid: %u via pipe\n", sig, proc->pid);
ret = GNUNET_DISK_file_write (proc->control_pipe, &csig, sizeof (csig));
- if (ret == sizeof (csig))
+ if (sizeof (csig) == ret)
return 0;
}
/* pipe failed or non-existent, try other methods */
switch (sig)
{
-#if !WINDOWS
+#if !defined (WINDOWS)
case SIGHUP:
#endif
case SIGINT:
case SIGKILL:
case SIGTERM:
-#if WINDOWS && !defined(__CYGWIN__)
- if (0 == TerminateProcess (proc->handle, 0))
+#if defined(WINDOWS) && !defined(__CYGWIN__)
{
- /* FIXME: set 'errno' */
- return -1;
+ DWORD exitcode;
+ int must_kill = GNUNET_YES;
+ if (0 != GetExitCodeProcess (proc->handle, &exitcode))
+ must_kill = (exitcode == STILL_ACTIVE) ? GNUNET_YES : GNUNET_NO;
+ if (GNUNET_YES == must_kill)
+ if (0 == SafeTerminateProcess (proc->handle, 0, 0))
+ {
+ DWORD error_code = GetLastError ();
+ if ((error_code != WAIT_TIMEOUT) && (error_code != ERROR_PROCESS_ABORTED))
+ {
+ LOG ((error_code == ERROR_ACCESS_DENIED) ?
+ GNUNET_ERROR_TYPE_INFO : GNUNET_ERROR_TYPE_WARNING,
+ "SafeTermiateProcess failed with code %lu\n", error_code);
+ /* The problem here is that a process that is already dying
+ * might cause SafeTerminateProcess to fail with
+ * ERROR_ACCESS_DENIED, but the process WILL die eventually.
+ * If we really had a permissions problem, hanging up (which
+ * is what will happen in process_wait() in that case) is
+ * a valid option.
+ */
+ if (ERROR_ACCESS_DENIED == error_code)
+ {
+ errno = 0;
+ }
+ else
+ {
+ SetErrnoFromWinError (error_code);
+ return -1;
+ }
+ }
+ }
}
return 0;
#else
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending signal %d to pid: %u via system call\n", sig, proc->pid);
return PLIBC_KILL (proc->pid, sig);
#endif
default:
-#if WINDOWS
+#if defined (WINDOWS)
errno = EINVAL;
return -1;
#else
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending signal %d to pid: %u via system call\n", sig, proc->pid);
return PLIBC_KILL (proc->pid, sig);
#endif
}
{
if (NULL != proc->control_pipe)
GNUNET_DISK_file_close (proc->control_pipe);
-// FIXME NILS
-#ifdef WINDOWS
+#if defined (WINDOWS)
if (proc->handle != NULL)
CloseHandle (proc->handle);
#endif
- if (NULL != proc->childpipename)
- {
-#if !WINDOWS
- cleanup_npipe (proc->childpipename);
-#endif
- GNUNET_free (proc->childpipename);
- }
GNUNET_free (proc);
}
-// FIXME NILS
#if WINDOWS
#include "gnunet_signal_lib.h"
}
#endif
-/**
- * Set process priority
- *
- * @param proc pointer to process structure
- * @param prio priority value
- * @return GNUNET_OK on success, GNUNET_SYSERR on error
- */
-int
-GNUNET_OS_set_process_priority (struct GNUNET_OS_Process *proc,
- enum GNUNET_SCHEDULER_Priority prio)
-{
- int rprio;
-
- GNUNET_assert (prio < GNUNET_SCHEDULER_PRIORITY_COUNT);
- if (prio == GNUNET_SCHEDULER_PRIORITY_KEEP)
- return GNUNET_OK;
-
- /* convert to MINGW/Unix values */
- switch (prio)
- {
- case GNUNET_SCHEDULER_PRIORITY_UI:
- case GNUNET_SCHEDULER_PRIORITY_URGENT:
-#ifdef MINGW
- rprio = HIGH_PRIORITY_CLASS;
-#else
- rprio = 0;
-#endif
- break;
-
- case GNUNET_SCHEDULER_PRIORITY_HIGH:
-#ifdef MINGW
- rprio = ABOVE_NORMAL_PRIORITY_CLASS;
-#else
- rprio = 5;
-#endif
- break;
-
- case GNUNET_SCHEDULER_PRIORITY_DEFAULT:
-#ifdef MINGW
- rprio = NORMAL_PRIORITY_CLASS;
-#else
- rprio = 7;
-#endif
- break;
-
- case GNUNET_SCHEDULER_PRIORITY_BACKGROUND:
-#ifdef MINGW
- rprio = BELOW_NORMAL_PRIORITY_CLASS;
-#else
- rprio = 10;
-#endif
- break;
-
- case GNUNET_SCHEDULER_PRIORITY_IDLE:
-#ifdef MINGW
- rprio = IDLE_PRIORITY_CLASS;
-#else
- rprio = 19;
-#endif
- break;
- default:
- GNUNET_assert (0);
- return GNUNET_SYSERR;
- }
-
- /* Set process priority */
-#ifdef MINGW
- {
- HANDLE h = proc->handle;
-
- GNUNET_assert (h != NULL);
- SetPriorityClass (h, rprio);
- }
-#elif LINUX
- pid_t pid;
-
- pid = proc->pid;
- if ((0 == pid) || (pid == getpid ()))
- {
- int have = nice (0);
- int delta = rprio - have;
-
- errno = 0;
- if ((delta != 0) && (rprio == nice (delta)) && (errno != 0))
- {
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK, "nice");
- return GNUNET_SYSERR;
- }
- }
- else
- {
- if (0 != setpriority (PRIO_PROCESS, pid, rprio))
- {
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
- "setpriority");
- return GNUNET_SYSERR;
- }
- }
-#else
- LOG (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
- "Priority management not availabe for this platform\n");
-#endif
- return GNUNET_OK;
-}
#if MINGW
static char *
char *val;
win32_env_table = GetEnvironmentStringsA ();
- if (win32_env_table == NULL)
+ if (NULL == win32_env_table)
return NULL;
for (c = 0, var_ptr = vars; *var_ptr; var_ptr += 2, c++) ;
n_var = c;
*result_ptr = 0;
return result;
}
-#endif
+#else
/**
- * Start a process.
+ * Open '/dev/null' and make the result the given
+ * file descriptor.
*
- * @param pipe_control should a pipe be used to send signals to the child?
- * @param pipe_stdin pipe to use to send input to child process (or NULL)
- * @param pipe_stdout pipe to use to get output from child process (or NULL)
- * @param filename name of the binary
- * @param argv NULL-terminated array of arguments to the process
- * @return pointer to process structure of the new process, NULL on error
+ * @param target_fd desired FD to point to /dev/null
+ * @param flags open flags (O_RDONLY, O_WRONLY)
*/
-struct GNUNET_OS_Process *
-GNUNET_OS_start_process_vap (int pipe_control,
- struct GNUNET_DISK_PipeHandle *pipe_stdin,
- struct GNUNET_DISK_PipeHandle *pipe_stdout,
- const char *filename,
- char *const argv[])
+static void
+open_dev_null (int target_fd,
+ int flags)
{
-#ifndef MINGW
- char *childpipename = NULL;
- struct GNUNET_OS_Process *gnunet_proc = NULL;
- pid_t ret;
- int fd_stdout_write;
- int fd_stdout_read;
- int fd_stdin_read;
- int fd_stdin_write;
-
- if ( (GNUNET_YES == pipe_control) &&
- (GNUNET_OK !=
- npipe_setup (&childpipename)) )
- return NULL;
- if (pipe_stdout != NULL)
- {
- GNUNET_assert (GNUNET_OK ==
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdout,
- GNUNET_DISK_PIPE_END_WRITE),
- &fd_stdout_write, sizeof (int)));
- GNUNET_assert (GNUNET_OK ==
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdout, GNUNET_DISK_PIPE_END_READ),
- &fd_stdout_read, sizeof (int)));
- }
- if (pipe_stdin != NULL)
- {
- GNUNET_assert (GNUNET_OK ==
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
- &fd_stdin_read, sizeof (int)));
- GNUNET_assert (GNUNET_OK ==
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdin, GNUNET_DISK_PIPE_END_WRITE),
- &fd_stdin_write, sizeof (int)));
- }
-
- ret = fork ();
- if (-1 == ret)
- {
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "fork");
- GNUNET_free_non_null (childpipename);
- return NULL;
- }
- if (0 != ret)
- {
- gnunet_proc = GNUNET_malloc (sizeof (struct GNUNET_OS_Process));
- gnunet_proc->pid = ret;
- gnunet_proc->childpipename = childpipename;
- return gnunet_proc;
- }
- if (NULL != childpipename)
- {
- setenv (GNUNET_OS_CONTROL_PIPE, childpipename, 1);
- GNUNET_free (childpipename);
- }
- if (pipe_stdout != NULL)
- {
- GNUNET_break (0 == close (fd_stdout_read));
- if (-1 == dup2 (fd_stdout_write, 1))
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
- GNUNET_break (0 == close (fd_stdout_write));
- }
-
- if (pipe_stdin != NULL)
- {
-
- GNUNET_break (0 == close (fd_stdin_write));
- if (-1 == dup2 (fd_stdin_read, 0))
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
- GNUNET_break (0 == close (fd_stdin_read));
- }
- execvp (filename, argv);
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "execvp", filename);
- _exit (1);
-#else
- char *childpipename = NULL;
- struct GNUNET_OS_Process *gnunet_proc = NULL;
- char *arg;
- unsigned int cmdlen;
- char *cmd, *idx;
- STARTUPINFOW start;
- PROCESS_INFORMATION proc;
- int argc, arg_count;
- HANDLE stdin_handle;
- HANDLE stdout_handle;
- struct GNUNET_DISK_FileHandle *control_pipe;
-
- char path[MAX_PATH + 1];
-
- char *our_env[3] = { NULL, NULL, NULL };
- char *env_block = NULL;
- char *pathbuf;
- DWORD pathbuf_len, alloc_len;
- char *self_prefix;
- char *bindir;
- char *libdir;
- char *ptr;
- char *non_const_filename;
- char win_path[MAX_PATH + 1];
- wchar_t *wpath, *wcmd;
- size_t wpath_len, wcmd_len;
- long lRet;
-
- /* Search in prefix dir (hopefully - the directory from which
- * the current module was loaded), bindir and libdir, then in PATH
- */
- self_prefix = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_SELF_PREFIX);
- bindir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_BINDIR);
- libdir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_LIBDIR);
-
- pathbuf_len = GetEnvironmentVariableA ("PATH", (char *) &pathbuf, 0);
-
- alloc_len =
- pathbuf_len + 1 + strlen (self_prefix) + 1 + strlen (bindir) + 1 +
- strlen (libdir);
-
- pathbuf = GNUNET_malloc (alloc_len * sizeof (char));
-
- ptr = pathbuf;
- ptr += sprintf (pathbuf, "%s;%s;%s;", self_prefix, bindir, libdir);
- GNUNET_free (self_prefix);
- GNUNET_free (bindir);
- GNUNET_free (libdir);
-
- alloc_len = GetEnvironmentVariableA ("PATH", ptr, pathbuf_len);
- GNUNET_assert (alloc_len == (pathbuf_len - 1));
-
- cmdlen = strlen (filename);
- if (cmdlen < 5 || strcmp (&filename[cmdlen - 4], ".exe") != 0)
- GNUNET_asprintf (&non_const_filename, "%s.exe", filename);
- else
- GNUNET_asprintf (&non_const_filename, "%s", filename);
-
- /* It could be in POSIX form, convert it to a DOS path early on */
- if (ERROR_SUCCESS != (lRet = plibc_conv_to_win_path (non_const_filename, win_path)))
- {
- SetErrnoFromWinError (lRet);
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "plibc_conv_to_win_path",
- non_const_filename);
- GNUNET_free (non_const_filename);
- GNUNET_free (pathbuf);
- return NULL;
- }
- GNUNET_free (non_const_filename);
- non_const_filename = GNUNET_strdup (win_path);
- /* Check that this is the full path. If it isn't, search. */
- /* FIXME: convert it to wchar_t and use SearchPathW?
- * Remember: arguments to _start_process() are technically in UTF-8...
- */
- if (non_const_filename[1] == ':')
- snprintf (path, sizeof (path) / sizeof (char), "%s", non_const_filename);
- else if (!SearchPathA
- (pathbuf, non_const_filename, NULL, sizeof (path) / sizeof (char),
- path, NULL))
- {
- SetErrnoFromWinError (GetLastError ());
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "SearchPath",
- non_const_filename);
- GNUNET_free (non_const_filename);
- GNUNET_free (pathbuf);
- return NULL;
- }
- GNUNET_free (pathbuf);
- GNUNET_free (non_const_filename);
-
- cmdlen = 0;
- argc = 0;
- while (NULL != (arg = argv[argc++]))
- {
- if (cmdlen == 0)
- cmdlen = cmdlen + strlen (path) + 4;
- else
- cmdlen = cmdlen + strlen (arg) + 4;
- }
- arg_count = argc;
-
- cmd = idx = GNUNET_malloc (sizeof (char) * (cmdlen + 1));
- argc = 0;
- while (NULL != (arg = argv[argc++]))
- {
- /* This is to escape trailing slash */
- char arg_lastchar = arg[strlen (arg) - 1];
- if (idx == cmd)
- idx += sprintf (idx, "\"%s%s\"%s", path,
- arg_lastchar == '\\' ? "\\" : "", argc + 1 == arg_count ? "" : " ");
- else
- idx += sprintf (idx, "\"%s%s\"%s", arg,
- arg_lastchar == '\\' ? "\\" : "", argc + 1 == arg_count ? "" : " ");
- }
-
- memset (&start, 0, sizeof (start));
- start.cb = sizeof (start);
-
- if ((pipe_stdin != NULL) || (pipe_stdout != NULL))
- start.dwFlags |= STARTF_USESTDHANDLES;
-
- if (pipe_stdin != NULL)
- {
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
- &stdin_handle, sizeof (HANDLE));
- start.hStdInput = stdin_handle;
- }
-
- if (pipe_stdout != NULL)
- {
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdout,
- GNUNET_DISK_PIPE_END_WRITE),
- &stdout_handle, sizeof (HANDLE));
- start.hStdOutput = stdout_handle;
- }
- if (GNUNET_YES == pipe_control)
- {
- control_pipe =
- npipe_create (&childpipename, GNUNET_DISK_OPEN_WRITE,
- GNUNET_DISK_PERM_USER_READ |
- GNUNET_DISK_PERM_USER_WRITE);
- if (control_pipe == NULL)
- {
- GNUNET_free (cmd);
- GNUNET_free (path);
- return NULL;
- }
- }
- else
- control_pipe = NULL;
- if (NULL != childpipename)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Opened the parent end of the pipe `%s'\n",
- childpipename);
- GNUNET_asprintf (&our_env[0], "%s=", GNUNET_OS_CONTROL_PIPE);
- GNUNET_asprintf (&our_env[1], "%s", childpipename);
- our_env[2] = NULL;
- }
- else
- {
- our_env[0] = NULL;
- }
- env_block = CreateCustomEnvTable (our_env);
- GNUNET_free_non_null (our_env[0]);
- GNUNET_free_non_null (our_env[1]);
-
- wpath_len = 0;
- if (NULL == (wpath = u8_to_u16 ((uint8_t *) path, 1 + strlen (path), NULL, &wpath_len)))
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Failed to convert `%s' from UTF-8 to UTF-16: %d\n", path, errno);
- GNUNET_free (env_block);
- GNUNET_free (cmd);
- return NULL;
- }
+ int fd;
- wcmd_len = 0;
- if (NULL == (wcmd = u8_to_u16 ((uint8_t *) cmd, 1 + strlen (cmd), NULL, &wcmd_len)))
+ fd = open ("/dev/null", flags);
+ if (-1 == fd)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Failed to convert `%s' from UTF-8 to UTF-16: %d\n", cmd, errno);
- GNUNET_free (env_block);
- GNUNET_free (cmd);
- free (wpath);
- return NULL;
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "open", "/dev/null");
+ return;
}
-
- if (!CreateProcessW (wpath, wcmd, NULL, NULL, TRUE,
- DETACHED_PROCESS | CREATE_SUSPENDED, env_block, NULL, &start, &proc))
+ if (fd == target_fd)
+ return;
+ if (-1 == dup2 (fd, target_fd))
{
- SetErrnoFromWinError (GetLastError ());
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "CreateProcess", path);
- GNUNET_free (env_block);
- GNUNET_free (cmd);
- free (wpath);
- free (wcmd);
- return NULL;
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "dup2");
+ (void) close (fd);
+ return;
}
-
- GNUNET_free (env_block);
-
- gnunet_proc = GNUNET_malloc (sizeof (struct GNUNET_OS_Process));
- gnunet_proc->pid = proc.dwProcessId;
- gnunet_proc->handle = proc.hProcess;
- gnunet_proc->control_pipe = control_pipe;
-
- CreateThread (NULL, 64000, &child_wait_thread, (void *) gnunet_proc, 0, NULL);
-
- ResumeThread (proc.hThread);
- CloseHandle (proc.hThread);
-
- GNUNET_free (cmd);
- free (wpath);
- free (wcmd);
- return gnunet_proc;
-#endif
+ GNUNET_break (0 == close (fd));
}
+#endif
/**
* Start a process.
*
* @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags controlling which
+ * std handles of the parent are inherited by the child.
+ * pipe_stdin and pipe_stdout take priority over std_inheritance
+ * (when they are non-NULL).
* @param pipe_stdin pipe to use to send input to child process (or NULL)
* @param pipe_stdout pipe to use to get output from child process (or NULL)
- * @param filename name of the binary
- * @param va NULL-terminated list of arguments to the process
- * @return pointer to process structure of the new process, NULL on error
- */
-struct GNUNET_OS_Process *
-GNUNET_OS_start_process_va (int pipe_control,
- struct GNUNET_DISK_PipeHandle *pipe_stdin,
- struct GNUNET_DISK_PipeHandle *pipe_stdout,
- const char *filename, va_list va)
-{
- struct GNUNET_OS_Process *ret;
- va_list ap;
- char **argv;
- int argc;
-
- argc = 0;
- va_copy (ap, va);
- while (NULL != va_arg (ap, char *))
- argc++;
- va_end (ap);
- argv = GNUNET_malloc (sizeof (char *) * (argc + 1));
- argc = 0;
- va_copy (ap, va);
- while (NULL != (argv[argc] = va_arg (ap, char *)))
- argc++;
- va_end (ap);
- ret = GNUNET_OS_start_process_vap (pipe_control,
- pipe_stdin,
- pipe_stdout,
- filename,
- argv);
- GNUNET_free (argv);
- return ret;
-}
-
-
-
-/**
- * Start a process.
- *
- * @param pipe_control should a pipe be used to send signals to the child?
- * @param pipe_stdin pipe to use to send input to child process (or NULL)
- * @param pipe_stdout pipe to use to get output from child process (or NULL)
- * @param filename name of the binary
- * @param ... NULL-terminated list of arguments to the process
- *
- * @return pointer to process structure of the new process, NULL on error
- *
- */
-struct GNUNET_OS_Process *
-GNUNET_OS_start_process (int pipe_control,
- struct GNUNET_DISK_PipeHandle *pipe_stdin,
- struct GNUNET_DISK_PipeHandle *pipe_stdout,
- const char *filename, ...)
-{
- struct GNUNET_OS_Process *ret;
- va_list ap;
-
- va_start (ap, filename);
- ret = GNUNET_OS_start_process_va (pipe_control, pipe_stdin, pipe_stdout, filename, ap);
- va_end (ap);
- return ret;
-}
-
-
-/**
- * Start a process.
- *
- * @param pipe_control should a pipe be used to send signals to the child?
* @param lsocks array of listen sockets to dup systemd-style (or NULL);
* must be NULL on platforms where dup is not supported
* @param filename name of the binary
* @param argv NULL-terminated list of arguments to the process
* @return process ID of the new process, -1 on error
*/
-struct GNUNET_OS_Process *
-GNUNET_OS_start_process_v (int pipe_control,
- const SOCKTYPE *lsocks,
- const char *filename,
- char *const argv[])
+static struct GNUNET_OS_Process *
+start_process (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ struct GNUNET_DISK_PipeHandle *pipe_stdin,
+ struct GNUNET_DISK_PipeHandle *pipe_stdout,
+ const SOCKTYPE *lsocks,
+ const char *filename,
+ char *const argv[])
{
#ifndef MINGW
pid_t ret;
char lpid[16];
char fds[16];
- struct GNUNET_OS_Process *gnunet_proc = NULL;
- char *childpipename = NULL;
+ struct GNUNET_OS_Process *gnunet_proc;
+ struct GNUNET_DISK_FileHandle *childpipe_read;
+ struct GNUNET_DISK_FileHandle *childpipe_write;
+ int childpipe_read_fd;
int i;
int j;
int k;
int flags;
int *lscp;
unsigned int ls;
+ int fd_stdout_write;
+ int fd_stdout_read;
+ int fd_stdin_read;
+ int fd_stdin_write;
- if ( (GNUNET_YES == pipe_control) &&
- (GNUNET_OK != npipe_setup (&childpipename)) )
- return NULL;
+ if (GNUNET_SYSERR == GNUNET_OS_check_helper_binary (filename, GNUNET_NO, NULL))
+ return NULL; /* not executable */
+ if (GNUNET_YES == pipe_control)
+ {
+ struct GNUNET_DISK_PipeHandle *childpipe;
+ int dup_childpipe_read_fd = -1;
+
+ childpipe = GNUNET_DISK_pipe (GNUNET_NO, GNUNET_NO, GNUNET_YES, GNUNET_NO);
+ if (NULL == childpipe)
+ return NULL;
+ childpipe_read = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_READ);
+ childpipe_write = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_WRITE);
+ GNUNET_DISK_pipe_close (childpipe);
+ if ((NULL == childpipe_read) || (NULL == childpipe_write) ||
+ (GNUNET_OK != GNUNET_DISK_internal_file_handle_ (childpipe_read,
+ &childpipe_read_fd, sizeof (int))) ||
+ (-1 == (dup_childpipe_read_fd = dup (childpipe_read_fd))))
+ {
+ if (NULL != childpipe_read)
+ GNUNET_DISK_file_close (childpipe_read);
+ if (NULL != childpipe_write)
+ GNUNET_DISK_file_close (childpipe_write);
+ if (0 <= dup_childpipe_read_fd)
+ close (dup_childpipe_read_fd);
+ return NULL;
+ }
+ childpipe_read_fd = dup_childpipe_read_fd;
+ GNUNET_DISK_file_close (childpipe_read);
+ }
+ else
+ {
+ childpipe_write = NULL;
+ childpipe_read_fd = -1;
+ }
+ if (NULL != pipe_stdout)
+ {
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdout,
+ GNUNET_DISK_PIPE_END_WRITE),
+ &fd_stdout_write, sizeof (int)));
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdout, GNUNET_DISK_PIPE_END_READ),
+ &fd_stdout_read, sizeof (int)));
+ }
+ if (NULL != pipe_stdin)
+ {
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
+ &fd_stdin_read, sizeof (int)));
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdin, GNUNET_DISK_PIPE_END_WRITE),
+ &fd_stdin_write, sizeof (int)));
+ }
lscp = NULL;
ls = 0;
- if (lsocks != NULL)
+ if (NULL != lsocks)
{
i = 0;
while (-1 != (k = lsocks[i++]))
GNUNET_array_append (lscp, ls, k);
GNUNET_array_append (lscp, ls, -1);
}
+#if DARWIN
+ /* see https://gnunet.org/vfork */
+ ret = vfork ();
+#else
ret = fork ();
+#endif
if (-1 == ret)
{
+ int eno = errno;
LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "fork");
- GNUNET_free_non_null (childpipename);
GNUNET_array_grow (lscp, ls, 0);
+ if (NULL != childpipe_write)
+ GNUNET_DISK_file_close (childpipe_write);
+ if (0 <= childpipe_read_fd)
+ close (childpipe_read_fd);
+ errno = eno;
return NULL;
}
if (0 != ret)
{
+ unsetenv (GNUNET_OS_CONTROL_PIPE);
gnunet_proc = GNUNET_malloc (sizeof (struct GNUNET_OS_Process));
gnunet_proc->pid = ret;
- gnunet_proc->childpipename = childpipename;
+ gnunet_proc->control_pipe = childpipe_write;
+ if (GNUNET_YES == pipe_control)
+ {
+ close (childpipe_read_fd);
+ }
GNUNET_array_grow (lscp, ls, 0);
return gnunet_proc;
}
- if (NULL != childpipename)
+ if (0 <= childpipe_read_fd)
+ {
+ char fdbuf[100];
+#ifndef DARWIN
+ /* due to vfork, we must NOT free memory on DARWIN! */
+ GNUNET_DISK_file_close (childpipe_write);
+#endif
+ snprintf (fdbuf, 100, "%x", childpipe_read_fd);
+ setenv (GNUNET_OS_CONTROL_PIPE, fdbuf, 1);
+ }
+ else
+ unsetenv (GNUNET_OS_CONTROL_PIPE);
+ if (NULL != pipe_stdin)
+ {
+ GNUNET_break (0 == close (fd_stdin_write));
+ if (-1 == dup2 (fd_stdin_read, 0))
+ LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
+ GNUNET_break (0 == close (fd_stdin_read));
+ }
+ else if (0 == (std_inheritance & GNUNET_OS_INHERIT_STD_IN))
+ {
+ GNUNET_break (0 == close (0));
+ open_dev_null (0, O_RDONLY);
+ }
+ if (NULL != pipe_stdout)
+ {
+ GNUNET_break (0 == close (fd_stdout_read));
+ if (-1 == dup2 (fd_stdout_write, 1))
+ LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
+ GNUNET_break (0 == close (fd_stdout_write));
+ }
+ else if (0 == (std_inheritance & GNUNET_OS_INHERIT_STD_OUT))
+ {
+ GNUNET_break (0 == close (1));
+ open_dev_null (1, O_WRONLY);
+ }
+ if (0 == (std_inheritance & GNUNET_OS_INHERIT_STD_ERR))
{
- setenv (GNUNET_OS_CONTROL_PIPE, childpipename, 1);
- GNUNET_free (childpipename);
+ GNUNET_break (0 == close (2));
+ open_dev_null (2, O_WRONLY);
}
- if (lscp != NULL)
+ if (NULL != lscp)
{
/* read systemd documentation... */
GNUNET_snprintf (lpid, sizeof (lpid), "%u", getpid ());
GNUNET_snprintf (fds, sizeof (fds), "%u", i);
setenv ("LISTEN_FDS", fds, 1);
}
+#ifndef DARWIN
+ /* due to vfork, we must NOT free memory on DARWIN! */
GNUNET_array_grow (lscp, ls, 0);
+#endif
execvp (filename, argv);
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "execvp", filename);
_exit (1);
#else
- struct GNUNET_DISK_FileHandle *control_pipe = NULL;
- char *childpipename = NULL;
- char **arg, **non_const_argv;
+ struct GNUNET_DISK_FileHandle *childpipe_read;
+ struct GNUNET_DISK_FileHandle *childpipe_write;
+ HANDLE childpipe_read_handle;
+ char **arg;
+ char **non_const_argv;
unsigned int cmdlen;
- char *cmd, *idx;
+ char *cmd;
+ char *idx;
STARTUPINFOW start;
PROCESS_INFORMATION proc;
int argcount = 0;
- struct GNUNET_OS_Process *gnunet_proc = NULL;
+ struct GNUNET_OS_Process *gnunet_proc;
char path[MAX_PATH + 1];
- char *our_env[5] = { NULL, NULL, NULL, NULL, NULL };
+ char *our_env[7] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL };
char *env_block = NULL;
char *pathbuf;
- DWORD pathbuf_len, alloc_len;
+ DWORD pathbuf_len;
+ DWORD alloc_len;
char *self_prefix;
char *bindir;
char *libdir;
const struct GNUNET_DISK_FileHandle *lsocks_write_fd;
HANDLE lsocks_read;
HANDLE lsocks_write;
- wchar_t *wpath, *wcmd;
- size_t wpath_len, wcmd_len;
+ wchar_t *wpath;
+ wchar_t *wcmd;
+ size_t wpath_len;
+ size_t wcmd_len;
int env_off;
int fail;
long lRet;
-
+ HANDLE stdin_handle;
+ HANDLE stdout_handle;
+ HANDLE stdih, stdoh, stdeh;
+ DWORD stdif, stdof, stdef;
+ BOOL bresult;
+ DWORD error_code;
+
+ if (GNUNET_SYSERR == GNUNET_OS_check_helper_binary (filename, GNUNET_NO, NULL))
+ return NULL; /* not executable */
+
/* Search in prefix dir (hopefully - the directory from which
* the current module was loaded), bindir and libdir, then in PATH
*/
}
cmdlen = strlen (filename);
- if (cmdlen < 5 || strcmp (&filename[cmdlen - 4], ".exe") != 0)
+ if ( (cmdlen < 5) || (0 != strcmp (&filename[cmdlen - 4], ".exe")) )
GNUNET_asprintf (&non_const_filename, "%s.exe", filename);
else
GNUNET_asprintf (&non_const_filename, "%s", filename);
* Remember: arguments to _start_process() are technically in UTF-8...
*/
if (non_const_filename[1] == ':')
+ {
snprintf (path, sizeof (path) / sizeof (char), "%s", non_const_filename);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Using path `%s' as-is. PATH is %s\n", path, ptr);
+ }
else if (!SearchPathA
(pathbuf, non_const_filename, NULL, sizeof (path) / sizeof (char),
path, NULL))
GNUNET_free (pathbuf);
return NULL;
}
+ else
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found `%s' in PATH `%s'\n", path, pathbuf);
GNUNET_free (pathbuf);
GNUNET_free (non_const_filename);
memset (&start, 0, sizeof (start));
start.cb = sizeof (start);
+ if ((pipe_stdin != NULL) || (pipe_stdout != NULL) || (std_inheritance != 0))
+ start.dwFlags |= STARTF_USESTDHANDLES;
+
+ stdih = GetStdHandle (STD_INPUT_HANDLE);
+ GetHandleInformation (stdih, &stdif);
+ if (pipe_stdin != NULL)
+ {
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
+ &stdin_handle, sizeof (HANDLE));
+ start.hStdInput = stdin_handle;
+ }
+ else if (stdih)
+ {
+ if (std_inheritance & GNUNET_OS_INHERIT_STD_IN)
+ {
+ SetHandleInformation (stdih, HANDLE_FLAG_INHERIT, 1);
+ if (pipe_stdin == NULL)
+ start.hStdInput = stdih;
+ }
+ else
+ SetHandleInformation (stdih, HANDLE_FLAG_INHERIT, 0);
+ }
+
+
+ stdoh = GetStdHandle (STD_OUTPUT_HANDLE);
+ GetHandleInformation (stdoh, &stdof);
+ if (NULL != pipe_stdout)
+ {
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdout,
+ GNUNET_DISK_PIPE_END_WRITE),
+ &stdout_handle, sizeof (HANDLE));
+ start.hStdOutput = stdout_handle;
+ }
+ else if (stdoh)
+ {
+ if (std_inheritance & GNUNET_OS_INHERIT_STD_OUT)
+ {
+ SetHandleInformation (stdoh, HANDLE_FLAG_INHERIT, 1);
+ if (pipe_stdout == NULL)
+ start.hStdOutput = stdoh;
+ }
+ else
+ SetHandleInformation (stdoh, HANDLE_FLAG_INHERIT, 0);
+ }
+
+ stdeh = GetStdHandle (STD_ERROR_HANDLE);
+ GetHandleInformation (stdeh, &stdef);
+ if (stdeh)
+ {
+ if (std_inheritance & GNUNET_OS_INHERIT_STD_ERR)
+ {
+ SetHandleInformation (stdeh, HANDLE_FLAG_INHERIT, 1);
+ start.hStdError = stdeh;
+ }
+ else
+ SetHandleInformation (stdeh, HANDLE_FLAG_INHERIT, 0);
+ }
if (GNUNET_YES == pipe_control)
{
- control_pipe =
- npipe_create (&childpipename, GNUNET_DISK_OPEN_WRITE,
- GNUNET_DISK_PERM_USER_READ |
- GNUNET_DISK_PERM_USER_WRITE);
- if (control_pipe == NULL)
+ struct GNUNET_DISK_PipeHandle *childpipe;
+ childpipe = GNUNET_DISK_pipe (GNUNET_NO, GNUNET_NO, GNUNET_YES, GNUNET_NO);
+ if (NULL == childpipe)
+ return NULL;
+ childpipe_read = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_READ);
+ childpipe_write = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_WRITE);
+ GNUNET_DISK_pipe_close (childpipe);
+ if ((NULL == childpipe_read) || (NULL == childpipe_write) ||
+ (GNUNET_OK != GNUNET_DISK_internal_file_handle_ (childpipe_read,
+ &childpipe_read_handle, sizeof (HANDLE))))
{
+ if (childpipe_read)
+ GNUNET_DISK_file_close (childpipe_read);
+ if (childpipe_write)
+ GNUNET_DISK_file_close (childpipe_write);
GNUNET_free (cmd);
- GNUNET_free (path);
return NULL;
}
+ /* Unlike *nix variant, we don't dup the handle, so can't close
+ * filehandle right now.
+ */
+ SetHandleInformation (childpipe_read_handle, HANDLE_FLAG_INHERIT, 1);
}
else
- control_pipe = NULL;
+ {
+ childpipe_read = NULL;
+ childpipe_write = NULL;
+ }
+
if (lsocks != NULL && lsocks[0] != INVALID_SOCKET)
{
lsocks_pipe = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_YES, GNUNET_NO);
if (lsocks_pipe == NULL)
{
GNUNET_free (cmd);
- GNUNET_free (path);
GNUNET_DISK_pipe_close (lsocks_pipe);
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_write);
+ GNUNET_DISK_file_close (childpipe_read);
+ }
return NULL;
}
lsocks_write_fd = GNUNET_DISK_pipe_handle (lsocks_pipe,
(lsocks_pipe, GNUNET_DISK_PIPE_END_READ),
&lsocks_read, sizeof (HANDLE));
}
+ else
+ lsocks_pipe = NULL;
env_off = 0;
- if (NULL != childpipename)
+ if (GNUNET_YES == pipe_control)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Opened the parent end of the pipe `%s'\n",
- childpipename);
GNUNET_asprintf (&our_env[env_off++], "%s=", GNUNET_OS_CONTROL_PIPE);
- GNUNET_asprintf (&our_env[env_off++], "%s", childpipename);
- GNUNET_free (childpipename);
+ GNUNET_asprintf (&our_env[env_off++], "%p", childpipe_read_handle);
}
if ( (lsocks != NULL) && (lsocks[0] != INVALID_SOCKET))
{
"Failed to convert `%s' from UTF-8 to UTF-16: %d\n", path, errno);
GNUNET_free (env_block);
GNUNET_free (cmd);
+ if (lsocks_pipe)
+ GNUNET_DISK_pipe_close (lsocks_pipe);
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_write);
+ GNUNET_DISK_file_close (childpipe_read);
+ }
return NULL;
}
GNUNET_free (env_block);
GNUNET_free (cmd);
free (wpath);
+ if (lsocks_pipe)
+ GNUNET_DISK_pipe_close (lsocks_pipe);
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_write);
+ GNUNET_DISK_file_close (childpipe_read);
+ }
return NULL;
}
- if (!CreateProcessW (wpath, wcmd, NULL, NULL, TRUE,
- DETACHED_PROCESS | CREATE_SUSPENDED, env_block, NULL, &start, &proc))
+ bresult = CreateProcessW (wpath, wcmd, NULL, NULL, GNUNET_YES,
+ DETACHED_PROCESS | CREATE_SUSPENDED, env_block, NULL, &start, &proc);
+ error_code = GetLastError ();
+
+ if ((NULL == pipe_stdin) && (stdih))
+ SetHandleInformation (stdih, HANDLE_FLAG_INHERIT, stdif);
+
+
+ if ((NULL == pipe_stdout) && (stdoh))
+ SetHandleInformation (stdoh, HANDLE_FLAG_INHERIT, stdof);
+
+ if (stdeh)
+ SetHandleInformation (stdeh, HANDLE_FLAG_INHERIT, stdef);
+
+ if (!bresult)
+ LOG (GNUNET_ERROR_TYPE_ERROR, "CreateProcess(%s, %s) failed: %lu\n", path, cmd, error_code);
+
+ GNUNET_free (env_block);
+ GNUNET_free (cmd);
+ free (wpath);
+ free (wcmd);
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_read);
+ }
+
+ if (!bresult)
{
- SetErrnoFromWinError (GetLastError ());
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "CreateProcess");
- if (NULL != control_pipe)
- GNUNET_DISK_file_close (control_pipe);
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_write);
+ }
if (NULL != lsocks)
GNUNET_DISK_pipe_close (lsocks_pipe);
- GNUNET_free (env_block);
- GNUNET_free (cmd);
- free (wpath);
- free (wcmd);
+ SetErrnoFromWinError (error_code);
return NULL;
}
- GNUNET_free (env_block);
-
gnunet_proc = GNUNET_malloc (sizeof (struct GNUNET_OS_Process));
gnunet_proc->pid = proc.dwProcessId;
gnunet_proc->handle = proc.hProcess;
- gnunet_proc->control_pipe = control_pipe;
+ gnunet_proc->control_pipe = childpipe_write;
CreateThread (NULL, 64000, &child_wait_thread, (void *) gnunet_proc, 0, NULL);
ResumeThread (proc.hThread);
CloseHandle (proc.hThread);
- GNUNET_free (cmd);
- free (wpath);
- free (wcmd);
- if (lsocks == NULL || lsocks[0] == INVALID_SOCKET)
+ if ( (NULL == lsocks) || (INVALID_SOCKET == lsocks[0]) )
return gnunet_proc;
GNUNET_DISK_pipe_close_end (lsocks_pipe, GNUNET_DISK_PIPE_END_READ);
fail = 1;
do
{
- int wrote;
- uint64_t size, count, i;
+ ssize_t wrote;
+ uint64_t size;
+ uint64_t count;
+ unsigned int i;
/* Tell the number of sockets */
for (count = 0; lsocks && lsocks[count] != INVALID_SOCKET; count++);
wrote = GNUNET_DISK_file_write (lsocks_write_fd, &count, sizeof (count));
- if (wrote != sizeof (count))
+ if (sizeof (count) != wrote)
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to write %u count bytes to the child: %u\n", sizeof (count), GetLastError ());
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to write %u count bytes to the child: %u\n",
+ sizeof (count), GetLastError ());
break;
}
for (i = 0; lsocks && lsocks[i] != INVALID_SOCKET; i++)
/* Get a socket duplication info */
if (SOCKET_ERROR == WSADuplicateSocketA (lsocks[i], gnunet_proc->pid, &pi))
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to duplicate an socket[%llu]: %u\n", i, GetLastError ());
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "CreateProcess");
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to duplicate an socket[%llu]: %u\n", i,
+ GetLastError ());
break;
}
/* Synchronous I/O is not nice, but we can't schedule this:
*/
size = sizeof (pi);
wrote = GNUNET_DISK_file_write (lsocks_write_fd, &size, sizeof (size));
- if (wrote != sizeof (size))
+ if (sizeof (size) != wrote)
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to write %u size[%llu] bytes to the child: %u\n", sizeof (size), i, GetLastError ());
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to write %u size[%llu] bytes to the child: %u\n",
+ sizeof (size), i, GetLastError ());
break;
}
/* Finally! Send the data */
wrote = GNUNET_DISK_file_write (lsocks_write_fd, &pi, sizeof (pi));
- if (wrote != sizeof (pi))
+ if (sizeof (pi) != wrote)
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to write %u socket[%llu] bytes to the child: %u\n", sizeof (pi), i, GetLastError ());
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to write %u socket[%llu] bytes to the child: %u\n",
+ sizeof (pi), i, GetLastError ());
break;
}
}
/* If we can't pass on the socket(s), the child will block forever,
* better put it out of its misery.
*/
- TerminateProcess (gnunet_proc->handle, 0);
+ SafeTerminateProcess (gnunet_proc->handle, 0, 0);
CloseHandle (gnunet_proc->handle);
if (NULL != gnunet_proc->control_pipe)
GNUNET_DISK_file_close (gnunet_proc->control_pipe);
}
+
+
+/**
+ * Start a process.
+ *
+ * @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
+ * @param pipe_stdin pipe to use to send input to child process (or NULL)
+ * @param pipe_stdout pipe to use to get output from child process (or NULL)
+ * @param filename name of the binary
+ * @param argv NULL-terminated array of arguments to the process
+ * @return pointer to process structure of the new process, NULL on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process_vap (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ struct GNUNET_DISK_PipeHandle *pipe_stdin,
+ struct GNUNET_DISK_PipeHandle *pipe_stdout,
+ const char *filename,
+ char *const argv[])
+{
+ return start_process (pipe_control,
+ std_inheritance,
+ pipe_stdin,
+ pipe_stdout,
+ NULL,
+ filename,
+ argv);
+}
+
+
+/**
+ * Start a process.
+ *
+ * @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
+ * @param pipe_stdin pipe to use to send input to child process (or NULL)
+ * @param pipe_stdout pipe to use to get output from child process (or NULL)
+ * @param filename name of the binary
+ * @param va NULL-terminated list of arguments to the process
+ * @return pointer to process structure of the new process, NULL on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process_va (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ struct GNUNET_DISK_PipeHandle *pipe_stdin,
+ struct GNUNET_DISK_PipeHandle *pipe_stdout,
+ const char *filename, va_list va)
+{
+ struct GNUNET_OS_Process *ret;
+ va_list ap;
+ char **argv;
+ int argc;
+
+ argc = 0;
+ va_copy (ap, va);
+ while (NULL != va_arg (ap, char *))
+ argc++;
+ va_end (ap);
+ argv = GNUNET_malloc (sizeof (char *) * (argc + 1));
+ argc = 0;
+ va_copy (ap, va);
+ while (NULL != (argv[argc] = va_arg (ap, char *)))
+ argc++;
+ va_end (ap);
+ ret = GNUNET_OS_start_process_vap (pipe_control,
+ std_inheritance,
+ pipe_stdin,
+ pipe_stdout,
+ filename,
+ argv);
+ GNUNET_free (argv);
+ return ret;
+}
+
+
+/**
+ * Start a process.
+ *
+ * @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
+ * @param pipe_stdin pipe to use to send input to child process (or NULL)
+ * @param pipe_stdout pipe to use to get output from child process (or NULL)
+ * @param filename name of the binary
+ * @param ... NULL-terminated list of arguments to the process
+ * @return pointer to process structure of the new process, NULL on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ struct GNUNET_DISK_PipeHandle *pipe_stdin,
+ struct GNUNET_DISK_PipeHandle *pipe_stdout,
+ const char *filename, ...)
+{
+ struct GNUNET_OS_Process *ret;
+ va_list ap;
+
+ va_start (ap, filename);
+ ret = GNUNET_OS_start_process_va (pipe_control, std_inheritance, pipe_stdin,
+ pipe_stdout, filename, ap);
+ va_end (ap);
+ return ret;
+}
+
+
+/**
+ * Start a process.
+ *
+ * @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags controlling which
+ * std handles of the parent are inherited by the child.
+ * pipe_stdin and pipe_stdout take priority over std_inheritance
+ * (when they are non-NULL).
+ * @param lsocks array of listen sockets to dup systemd-style (or NULL);
+ * must be NULL on platforms where dup is not supported
+ * @param filename name of the binary
+ * @param argv NULL-terminated list of arguments to the process
+ * @return process ID of the new process, -1 on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process_v (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ const SOCKTYPE *lsocks,
+ const char *filename,
+ char *const argv[])
+{
+ return start_process (pipe_control,
+ std_inheritance,
+ NULL,
+ NULL,
+ lsocks,
+ filename,
+ argv);
+}
+
+
/**
* Retrieve the status of a process, waiting on him if dead.
* Nonblocking version.
/**
* Wait for a process
+ *
* @param proc pointer to process structure
* @return GNUNET_OK on success, GNUNET_SYSERR otherwise
*/
int
GNUNET_OS_process_wait (struct GNUNET_OS_Process *proc)
{
-
#ifndef MINGW
pid_t pid = proc->pid;
pid_t ret;
return GNUNET_OK;
#else
HANDLE h;
- int ret;
h = proc->handle;
if (NULL == h)
proc->pid, h);
return GNUNET_SYSERR;
}
- if (h == NULL)
+ if (NULL == h)
h = GetCurrentProcess ();
if (WAIT_OBJECT_0 != WaitForSingleObject (h, INFINITE))
{
SetErrnoFromWinError (GetLastError ());
- ret = GNUNET_SYSERR;
+ return GNUNET_SYSERR;
}
- else
- ret = GNUNET_OK;
-
- return ret;
+ return GNUNET_OK;
#endif
}
void
GNUNET_OS_command_stop (struct GNUNET_OS_CommandHandle *cmd)
{
-
- if (cmd->proc != NULL)
+ if (NULL != cmd->proc)
{
GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != cmd->rtask);
GNUNET_SCHEDULER_cancel (cmd->rtask);
}
end = memchr (&cmd->buf[cmd->off], '\n', ret);
cmd->off += ret;
- while (end != NULL)
+ while (NULL != end)
{
*end = '\0';
cmd->proc (cmd->proc_cls, cmd->buf);
if (NULL == opipe)
return NULL;
va_start (ap, binary);
- eip = GNUNET_OS_start_process_va (GNUNET_NO, NULL, opipe, binary, ap);
+ /* redirect stdout, don't inherit stderr/stdin */
+ eip = GNUNET_OS_start_process_va (GNUNET_NO, 0, NULL, opipe, binary, ap);
va_end (ap);
if (NULL == eip)
{
}
-
-
/* end of os_priority.c */
projects / oweals / gnunet.git / blobdiff