2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2011 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file util/os_priority.c
23 * @brief Methods to set process priority
28 #include "gnunet_util_lib.h"
32 #define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
34 #define LOG_STRERROR(kind,syscall) GNUNET_log_from_strerror (kind, "util", syscall)
36 #define LOG_STRERROR_FILE(kind,syscall,filename) GNUNET_log_from_strerror_file (kind, "util", syscall, filename)
38 #define GNUNET_OS_CONTROL_PIPE "GNUNET_OS_CONTROL_PIPE"
41 struct GNUNET_OS_Process
56 * Pipe we use to signal the process.
57 * NULL if unused, or if process was deemed uncontrollable.
59 struct GNUNET_DISK_FileHandle *control_pipe;
64 * Handle for 'this' process.
66 static struct GNUNET_OS_Process current_process;
70 * This handler is called when there are control data to be read on the pipe
72 * @param cls the 'struct GNUNET_DISK_FileHandle' of the control pipe
73 * @param tc scheduler context
76 parent_control_handler (void *cls,
77 const struct GNUNET_SCHEDULER_TaskContext *tc)
79 struct GNUNET_DISK_FileHandle *control_pipe = cls;
84 LOG (GNUNET_ERROR_TYPE_DEBUG, "`%s' invoked because of %d\n", __FUNCTION__,
86 if (0 != (tc->reason &
87 (GNUNET_SCHEDULER_REASON_SHUTDOWN | GNUNET_SCHEDULER_REASON_TIMEOUT)))
89 GNUNET_DISK_file_close (control_pipe);
93 ret = GNUNET_DISK_file_read (control_pipe, &sig, sizeof (sig));
94 if (sizeof (sig) != ret)
97 LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "GNUNET_DISK_file_read");
98 LOG (GNUNET_ERROR_TYPE_DEBUG, "Closing control pipe\n");
99 GNUNET_DISK_file_close (control_pipe);
103 pipe_fd = getenv (GNUNET_OS_CONTROL_PIPE);
104 GNUNET_assert ( (NULL == pipe_fd) || (strlen (pipe_fd) <= 0) );
105 LOG (GNUNET_ERROR_TYPE_DEBUG,
106 "Got control code %d from parent via pipe %s\n", sig, pipe_fd);
107 GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
108 control_pipe, &parent_control_handler,
110 GNUNET_SIGNAL_raise ((int) sig);
115 * Task that connects this process to its parent via pipe;
116 * essentially, the parent control handler will read signal numbers
117 * from the 'GNUNET_OS_CONTROL_PIPE' (as given in an environment
118 * variable) and raise those signals.
120 * @param cls closure (unused)
121 * @param tc scheduler context (unused)
124 GNUNET_OS_install_parent_control_handler (void *cls,
126 GNUNET_SCHEDULER_TaskContext *tc)
130 struct GNUNET_DISK_FileHandle *control_pipe;
133 env_buf = getenv (GNUNET_OS_CONTROL_PIPE);
134 if ( (NULL == env_buf) || (strlen (env_buf) <= 0) )
136 LOG (GNUNET_ERROR_TYPE_DEBUG,
137 "Not installing a handler because $%s is empty\n",
138 GNUNET_OS_CONTROL_PIPE);
139 putenv (GNUNET_OS_CONTROL_PIPE "=");
143 pipe_fd = strtoull (env_buf, &env_buf_end, 16);
144 if ((0 != errno) || (env_buf == env_buf_end))
146 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "strtoull", env_buf);
147 putenv (GNUNET_OS_CONTROL_PIPE "=");
150 #if !defined (WINDOWS)
151 if (pipe_fd >= FD_SETSIZE)
153 if ((FILE_TYPE_UNKNOWN == GetFileType ((HANDLE) (uintptr_t) pipe_fd))
154 && (0 != GetLastError ()))
157 LOG (GNUNET_ERROR_TYPE_ERROR,
158 "GNUNET_OS_CONTROL_PIPE `%s' contains garbage?\n", env_buf);
159 putenv (GNUNET_OS_CONTROL_PIPE "=");
163 control_pipe = GNUNET_DISK_get_handle_from_w32_handle ((HANDLE) (uintptr_t) pipe_fd);
165 control_pipe = GNUNET_DISK_get_handle_from_int_fd ((int) pipe_fd);
167 if (NULL == control_pipe)
169 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "open", env_buf);
170 putenv (GNUNET_OS_CONTROL_PIPE "=");
173 LOG (GNUNET_ERROR_TYPE_DEBUG,
174 "Adding parent control handler pipe `%s' to the scheduler\n", env_buf);
175 GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL, control_pipe,
176 &parent_control_handler, control_pipe);
177 putenv (GNUNET_OS_CONTROL_PIPE "=");
182 * Get process structure for current process
184 * The pointer it returns points to static memory location and must not be
187 * @return pointer to the process sturcutre for this process
189 struct GNUNET_OS_Process *
190 GNUNET_OS_process_current ()
193 current_process.pid = GetCurrentProcessId ();
194 current_process.handle = GetCurrentProcess ();
196 current_process.pid = 0;
198 return ¤t_process;
203 * Sends a signal to the process
205 * @param proc pointer to process structure
207 * @return 0 on success, -1 on error
210 GNUNET_OS_process_kill (struct GNUNET_OS_Process *proc, int sig)
216 if (NULL != proc->control_pipe)
218 LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending signal %d to pid: %u via pipe\n", sig, proc->pid);
219 ret = GNUNET_DISK_file_write (proc->control_pipe, &csig, sizeof (csig));
220 if (sizeof (csig) == ret)
223 /* pipe failed or non-existent, try other methods */
226 #if !defined (WINDOWS)
232 #if (SIGTERM != GNUNET_TERM_SIG)
233 case GNUNET_TERM_SIG:
235 #if defined(WINDOWS) && !defined(__CYGWIN__)
238 int must_kill = GNUNET_YES;
239 if (0 != GetExitCodeProcess (proc->handle, &exitcode))
240 must_kill = (exitcode == STILL_ACTIVE) ? GNUNET_YES : GNUNET_NO;
241 if (GNUNET_YES == must_kill)
242 if (0 == SafeTerminateProcess (proc->handle, 0, 0))
244 DWORD error_code = GetLastError ();
245 if ((error_code != WAIT_TIMEOUT) && (error_code != ERROR_PROCESS_ABORTED))
247 LOG ((error_code == ERROR_ACCESS_DENIED) ?
248 GNUNET_ERROR_TYPE_INFO : GNUNET_ERROR_TYPE_WARNING,
249 "SafeTermiateProcess failed with code %lu\n", error_code);
250 /* The problem here is that a process that is already dying
251 * might cause SafeTerminateProcess to fail with
252 * ERROR_ACCESS_DENIED, but the process WILL die eventually.
253 * If we really had a permissions problem, hanging up (which
254 * is what will happen in process_wait() in that case) is
257 if (ERROR_ACCESS_DENIED == error_code)
263 SetErrnoFromWinError (error_code);
271 LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending signal %d to pid: %u via system call\n", sig, proc->pid);
272 return PLIBC_KILL (proc->pid, sig);
275 #if defined (WINDOWS)
279 LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending signal %d to pid: %u via system call\n", sig, proc->pid);
280 return PLIBC_KILL (proc->pid, sig);
286 * Get the pid of the process in question
288 * @param proc the process to get the pid of
290 * @return the current process id
293 GNUNET_OS_process_get_pid (struct GNUNET_OS_Process * proc)
300 * Cleans up process structure contents (OS-dependent) and deallocates it
302 * @param proc pointer to process structure
305 GNUNET_OS_process_destroy (struct GNUNET_OS_Process *proc)
307 if (NULL != proc->control_pipe)
308 GNUNET_DISK_file_close (proc->control_pipe);
309 #if defined (WINDOWS)
310 if (proc->handle != NULL)
311 CloseHandle (proc->handle);
317 #include "gnunet_signal_lib.h"
319 extern GNUNET_SIGNAL_Handler w32_sigchld_handler;
322 * Make seaspider happy.
324 #define DWORD_WINAPI DWORD WINAPI
327 * @brief Waits for a process to terminate and invokes the SIGCHLD handler
328 * @param proc pointer to process structure
331 child_wait_thread (void *arg)
333 struct GNUNET_OS_Process *proc = (struct GNUNET_OS_Process *) arg;
335 WaitForSingleObject (proc->handle, INFINITE);
337 if (w32_sigchld_handler)
338 w32_sigchld_handler ();
347 CreateCustomEnvTable (char **vars)
349 char *win32_env_table;
354 size_t tablesize = 0;
355 size_t items_count = 0;
364 win32_env_table = GetEnvironmentStringsA ();
365 if (NULL == win32_env_table)
367 for (c = 0, var_ptr = vars; *var_ptr; var_ptr += 2, c++) ;
369 index = GNUNET_malloc (sizeof (char *) * n_var);
370 for (c = 0; c < n_var; c++)
372 for (items_count = 0, ptr = win32_env_table; ptr[0] != 0; items_count++)
374 size_t len = strlen (ptr);
377 for (var_ptr = vars; *var_ptr; var_ptr++)
381 var_len = strlen (var);
382 if (strncmp (var, ptr, var_len) == 0)
386 tablesize += var_len + strlen (val) + 1;
391 tablesize += len + 1;
394 for (n_found = 0, c = 0, var_ptr = vars; *var_ptr; var_ptr++, c++)
399 n_found += strlen (var) + strlen (val) + 1;
401 result = GNUNET_malloc (tablesize + n_found + 1);
402 for (result_ptr = result, ptr = win32_env_table; ptr[0] != 0;)
404 size_t len = strlen (ptr);
407 for (c = 0, var_ptr = vars; *var_ptr; var_ptr++, c++)
411 var_len = strlen (var);
412 if (strncmp (var, ptr, var_len) == 0)
420 strcpy (result_ptr, ptr);
421 result_ptr += len + 1;
425 strcpy (result_ptr, var);
426 result_ptr += var_len;
427 strcpy (result_ptr, val);
428 result_ptr += strlen (val) + 1;
432 for (c = 0, var_ptr = vars; *var_ptr; var_ptr++, c++)
436 var_len = strlen (var);
439 strcpy (result_ptr, var);
440 result_ptr += var_len;
441 strcpy (result_ptr, val);
442 result_ptr += strlen (val) + 1;
445 FreeEnvironmentStrings (win32_env_table);
454 * Open '/dev/null' and make the result the given
457 * @param target_fd desired FD to point to /dev/null
458 * @param flags open flags (O_RDONLY, O_WRONLY)
461 open_dev_null (int target_fd,
466 fd = open ("/dev/null", flags);
469 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "open", "/dev/null");
474 if (-1 == dup2 (fd, target_fd))
476 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "dup2");
480 GNUNET_break (0 == close (fd));
488 * @param pipe_control should a pipe be used to send signals to the child?
489 * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags controlling which
490 * std handles of the parent are inherited by the child.
491 * pipe_stdin and pipe_stdout take priority over std_inheritance
492 * (when they are non-NULL).
493 * @param pipe_stdin pipe to use to send input to child process (or NULL)
494 * @param pipe_stdout pipe to use to get output from child process (or NULL)
495 * @param lsocks array of listen sockets to dup systemd-style (or NULL);
496 * must be NULL on platforms where dup is not supported
497 * @param filename name of the binary
498 * @param argv NULL-terminated list of arguments to the process
499 * @return process ID of the new process, -1 on error
501 static struct GNUNET_OS_Process *
502 start_process (int pipe_control,
503 enum GNUNET_OS_InheritStdioFlags std_inheritance,
504 struct GNUNET_DISK_PipeHandle *pipe_stdin,
505 struct GNUNET_DISK_PipeHandle *pipe_stdout,
506 struct GNUNET_DISK_PipeHandle *pipe_stderr,
507 const SOCKTYPE *lsocks,
508 const char *filename,
514 struct GNUNET_OS_Process *gnunet_proc;
515 struct GNUNET_DISK_FileHandle *childpipe_read;
516 struct GNUNET_DISK_FileHandle *childpipe_write;
517 int childpipe_read_fd;
532 if (GNUNET_SYSERR == GNUNET_OS_check_helper_binary (filename, GNUNET_NO, NULL))
533 return NULL; /* not executable */
534 if (GNUNET_YES == pipe_control)
536 struct GNUNET_DISK_PipeHandle *childpipe;
537 int dup_childpipe_read_fd = -1;
539 childpipe = GNUNET_DISK_pipe (GNUNET_NO, GNUNET_NO, GNUNET_YES, GNUNET_NO);
540 if (NULL == childpipe)
542 childpipe_read = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_READ);
543 childpipe_write = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_WRITE);
544 GNUNET_DISK_pipe_close (childpipe);
545 if ((NULL == childpipe_read) || (NULL == childpipe_write) ||
546 (GNUNET_OK != GNUNET_DISK_internal_file_handle_ (childpipe_read,
547 &childpipe_read_fd, sizeof (int))) ||
548 (-1 == (dup_childpipe_read_fd = dup (childpipe_read_fd))))
550 if (NULL != childpipe_read)
551 GNUNET_DISK_file_close (childpipe_read);
552 if (NULL != childpipe_write)
553 GNUNET_DISK_file_close (childpipe_write);
554 if (0 <= dup_childpipe_read_fd)
555 close (dup_childpipe_read_fd);
558 childpipe_read_fd = dup_childpipe_read_fd;
559 GNUNET_DISK_file_close (childpipe_read);
563 childpipe_write = NULL;
564 childpipe_read_fd = -1;
566 if (NULL != pipe_stdout)
568 GNUNET_assert (GNUNET_OK ==
569 GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
571 GNUNET_DISK_PIPE_END_WRITE),
572 &fd_stdout_write, sizeof (int)));
573 GNUNET_assert (GNUNET_OK ==
574 GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
575 (pipe_stdout, GNUNET_DISK_PIPE_END_READ),
576 &fd_stdout_read, sizeof (int)));
578 if (NULL != pipe_stdin)
580 GNUNET_assert (GNUNET_OK ==
581 GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
582 (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
583 &fd_stdin_read, sizeof (int)));
584 GNUNET_assert (GNUNET_OK ==
585 GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
586 (pipe_stdin, GNUNET_DISK_PIPE_END_WRITE),
587 &fd_stdin_write, sizeof (int)));
589 if (NULL != pipe_stderr)
591 GNUNET_assert (GNUNET_OK ==
592 GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
594 GNUNET_DISK_PIPE_END_READ),
595 &fd_stderr_read, sizeof (int)));
596 GNUNET_assert (GNUNET_OK ==
597 GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
599 GNUNET_DISK_PIPE_END_WRITE),
600 &fd_stderr_write, sizeof (int)));
607 while (-1 != (k = lsocks[i++]))
608 GNUNET_array_append (lscp, ls, k);
609 GNUNET_array_append (lscp, ls, -1);
612 /* see https://gnunet.org/vfork */
620 LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "fork");
621 GNUNET_array_grow (lscp, ls, 0);
622 if (NULL != childpipe_write)
623 GNUNET_DISK_file_close (childpipe_write);
624 if (0 <= childpipe_read_fd)
625 close (childpipe_read_fd);
631 unsetenv (GNUNET_OS_CONTROL_PIPE);
632 gnunet_proc = GNUNET_new (struct GNUNET_OS_Process);
633 gnunet_proc->pid = ret;
634 gnunet_proc->control_pipe = childpipe_write;
635 if (GNUNET_YES == pipe_control)
637 close (childpipe_read_fd);
639 GNUNET_array_grow (lscp, ls, 0);
642 if (0 <= childpipe_read_fd)
646 /* due to vfork, we must NOT free memory on DARWIN! */
647 GNUNET_DISK_file_close (childpipe_write);
649 snprintf (fdbuf, 100, "%x", childpipe_read_fd);
650 setenv (GNUNET_OS_CONTROL_PIPE, fdbuf, 1);
653 unsetenv (GNUNET_OS_CONTROL_PIPE);
654 if (NULL != pipe_stdin)
656 GNUNET_break (0 == close (fd_stdin_write));
657 if (-1 == dup2 (fd_stdin_read, 0))
658 LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
659 GNUNET_break (0 == close (fd_stdin_read));
661 else if (0 == (std_inheritance & GNUNET_OS_INHERIT_STD_IN))
663 GNUNET_break (0 == close (0));
664 open_dev_null (0, O_RDONLY);
666 if (NULL != pipe_stdout)
668 GNUNET_break (0 == close (fd_stdout_read));
669 if (-1 == dup2 (fd_stdout_write, 1))
670 LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
671 GNUNET_break (0 == close (fd_stdout_write));
673 else if (0 == (std_inheritance & GNUNET_OS_INHERIT_STD_OUT))
675 GNUNET_break (0 == close (1));
676 open_dev_null (1, O_WRONLY);
678 if (NULL != pipe_stderr)
680 GNUNET_break (0 == close (fd_stderr_read));
681 if (-1 == dup2 (fd_stderr_write, 2))
682 LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
683 GNUNET_break (0 == close (fd_stderr_write));
685 else if (0 == (std_inheritance & GNUNET_OS_INHERIT_STD_ERR))
687 GNUNET_break (0 == close (2));
688 open_dev_null (2, O_WRONLY);
692 /* read systemd documentation... */
695 while (-1 != lscp[i])
698 while (-1 != lscp[j])
704 GNUNET_assert (-1 != k);
705 GNUNET_assert (0 == close (lscp[j]));
713 /* Bury any existing FD, no matter what; they should all be closed
714 * on exec anyway and the important onces have been dup'ed away */
716 GNUNET_assert (-1 != dup2 (lscp[i], tgt));
718 /* unset close-on-exec flag */
719 flags = fcntl (tgt, F_GETFD);
720 GNUNET_assert (flags >= 0);
721 flags &= ~FD_CLOEXEC;
723 (void) fcntl (tgt, F_SETFD, flags);
727 GNUNET_snprintf (fds, sizeof (fds), "%u", i);
728 setenv ("LISTEN_FDS", fds, 1);
731 /* due to vfork, we must NOT free memory on DARWIN! */
732 GNUNET_array_grow (lscp, ls, 0);
734 execvp (filename, argv);
735 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "execvp", filename);
738 struct GNUNET_DISK_FileHandle *childpipe_read;
739 struct GNUNET_DISK_FileHandle *childpipe_write;
740 HANDLE childpipe_read_handle;
742 char **non_const_argv;
747 PROCESS_INFORMATION proc;
749 struct GNUNET_OS_Process *gnunet_proc;
750 char path[MAX_PATH + 1];
751 char *our_env[7] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL };
752 char *env_block = NULL;
760 char *non_const_filename;
761 char win_path[MAX_PATH + 1];
762 struct GNUNET_DISK_PipeHandle *lsocks_pipe;
763 const struct GNUNET_DISK_FileHandle *lsocks_write_fd;
774 HANDLE stdout_handle;
775 HANDLE stdih, stdoh, stdeh;
776 DWORD stdif, stdof, stdef;
779 DWORD create_no_window;
781 if (GNUNET_SYSERR == GNUNET_OS_check_helper_binary (filename, GNUNET_NO, NULL))
782 return NULL; /* not executable */
784 /* Search in prefix dir (hopefully - the directory from which
785 * the current module was loaded), bindir and libdir, then in PATH
787 self_prefix = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_SELF_PREFIX);
788 bindir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_BINDIR);
789 libdir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_LIBDIR);
791 pathbuf_len = GetEnvironmentVariableA ("PATH", (char *) &pathbuf, 0);
794 pathbuf_len + 1 + strlen (self_prefix) + 1 + strlen (bindir) + 1 +
797 pathbuf = GNUNET_malloc (alloc_len * sizeof (char));
800 ptr += sprintf (pathbuf, "%s;%s;%s;", self_prefix, bindir, libdir);
801 GNUNET_free (self_prefix);
802 GNUNET_free (bindir);
803 GNUNET_free (libdir);
805 alloc_len = GetEnvironmentVariableA ("PATH", ptr, pathbuf_len);
806 if (alloc_len != pathbuf_len - 1)
808 GNUNET_free (pathbuf);
809 errno = ENOSYS; /* PATH changed on the fly. What kind of error is that? */
813 cmdlen = strlen (filename);
814 if ( (cmdlen < 5) || (0 != strcmp (&filename[cmdlen - 4], ".exe")) )
815 GNUNET_asprintf (&non_const_filename, "%s.exe", filename);
817 GNUNET_asprintf (&non_const_filename, "%s", filename);
819 /* It could be in POSIX form, convert it to a DOS path early on */
820 if (ERROR_SUCCESS != (lRet = plibc_conv_to_win_path (non_const_filename, win_path)))
822 SetErrnoFromWinError (lRet);
823 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "plibc_conv_to_win_path",
825 GNUNET_free (non_const_filename);
826 GNUNET_free (pathbuf);
829 GNUNET_free (non_const_filename);
830 non_const_filename = GNUNET_strdup (win_path);
831 /* Check that this is the full path. If it isn't, search. */
832 /* FIXME: convert it to wchar_t and use SearchPathW?
833 * Remember: arguments to _start_process() are technically in UTF-8...
835 if (non_const_filename[1] == ':')
837 snprintf (path, sizeof (path) / sizeof (char), "%s", non_const_filename);
838 LOG (GNUNET_ERROR_TYPE_DEBUG,
839 "Using path `%s' as-is. PATH is %s\n", path, ptr);
841 else if (!SearchPathA
842 (pathbuf, non_const_filename, NULL, sizeof (path) / sizeof (char),
845 SetErrnoFromWinError (GetLastError ());
846 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "SearchPath",
848 GNUNET_free (non_const_filename);
849 GNUNET_free (pathbuf);
853 LOG (GNUNET_ERROR_TYPE_DEBUG,
854 "Found `%s' in PATH `%s'\n", path, pathbuf);
855 GNUNET_free (pathbuf);
856 GNUNET_free (non_const_filename);
858 /* Count the number of arguments */
859 arg = (char **) argv;
866 /* Allocate a copy argv */
867 non_const_argv = GNUNET_malloc (sizeof (char *) * (argcount + 1));
869 /* Copy all argv strings */
871 arg = (char **) argv;
875 non_const_argv[argcount] = GNUNET_strdup (path);
877 non_const_argv[argcount] = GNUNET_strdup (*arg);
881 non_const_argv[argcount] = NULL;
885 arg = non_const_argv;
888 cmdlen = cmdlen + strlen (*arg) + 4;
892 /* Allocate and create cmd */
893 cmd = idx = GNUNET_malloc (sizeof (char) * cmdlen);
894 arg = non_const_argv;
897 char arg_last_char = (*arg)[strlen (*arg) - 1];
898 idx += sprintf (idx, "\"%s%s\"%s", *arg,
899 arg_last_char == '\\' ? "\\" : "", *(arg + 1) ? " " : "");
904 GNUNET_free (non_const_argv[--argcount]);
905 GNUNET_free (non_const_argv);
907 memset (&start, 0, sizeof (start));
908 start.cb = sizeof (start);
909 if ((pipe_stdin != NULL) || (pipe_stdout != NULL) || (std_inheritance != 0))
910 start.dwFlags |= STARTF_USESTDHANDLES;
912 stdih = GetStdHandle (STD_INPUT_HANDLE);
913 GetHandleInformation (stdih, &stdif);
914 if (pipe_stdin != NULL)
916 GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
917 (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
918 &stdin_handle, sizeof (HANDLE));
919 start.hStdInput = stdin_handle;
923 if (std_inheritance & GNUNET_OS_INHERIT_STD_IN)
925 SetHandleInformation (stdih, HANDLE_FLAG_INHERIT, 1);
926 if (pipe_stdin == NULL)
927 start.hStdInput = stdih;
930 SetHandleInformation (stdih, HANDLE_FLAG_INHERIT, 0);
934 stdoh = GetStdHandle (STD_OUTPUT_HANDLE);
935 GetHandleInformation (stdoh, &stdof);
936 if (NULL != pipe_stdout)
938 GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
940 GNUNET_DISK_PIPE_END_WRITE),
941 &stdout_handle, sizeof (HANDLE));
942 start.hStdOutput = stdout_handle;
946 if (std_inheritance & GNUNET_OS_INHERIT_STD_OUT)
948 SetHandleInformation (stdoh, HANDLE_FLAG_INHERIT, 1);
949 if (pipe_stdout == NULL)
950 start.hStdOutput = stdoh;
953 SetHandleInformation (stdoh, HANDLE_FLAG_INHERIT, 0);
956 stdeh = GetStdHandle (STD_ERROR_HANDLE);
957 GetHandleInformation (stdeh, &stdef);
960 if (std_inheritance & GNUNET_OS_INHERIT_STD_ERR)
962 SetHandleInformation (stdeh, HANDLE_FLAG_INHERIT, 1);
963 start.hStdError = stdeh;
966 SetHandleInformation (stdeh, HANDLE_FLAG_INHERIT, 0);
969 if (GNUNET_YES == pipe_control)
971 struct GNUNET_DISK_PipeHandle *childpipe;
972 childpipe = GNUNET_DISK_pipe (GNUNET_NO, GNUNET_NO, GNUNET_YES, GNUNET_NO);
973 if (NULL == childpipe)
975 childpipe_read = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_READ);
976 childpipe_write = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_WRITE);
977 GNUNET_DISK_pipe_close (childpipe);
978 if ((NULL == childpipe_read) || (NULL == childpipe_write) ||
979 (GNUNET_OK != GNUNET_DISK_internal_file_handle_ (childpipe_read,
980 &childpipe_read_handle, sizeof (HANDLE))))
983 GNUNET_DISK_file_close (childpipe_read);
985 GNUNET_DISK_file_close (childpipe_write);
989 /* Unlike *nix variant, we don't dup the handle, so can't close
990 * filehandle right now.
992 SetHandleInformation (childpipe_read_handle, HANDLE_FLAG_INHERIT, 1);
996 childpipe_read = NULL;
997 childpipe_write = NULL;
1000 if (lsocks != NULL && lsocks[0] != INVALID_SOCKET)
1002 lsocks_pipe = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_YES, GNUNET_NO);
1004 if (lsocks_pipe == NULL)
1007 GNUNET_DISK_pipe_close (lsocks_pipe);
1008 if (GNUNET_YES == pipe_control)
1010 GNUNET_DISK_file_close (childpipe_write);
1011 GNUNET_DISK_file_close (childpipe_read);
1015 lsocks_write_fd = GNUNET_DISK_pipe_handle (lsocks_pipe,
1016 GNUNET_DISK_PIPE_END_WRITE);
1017 GNUNET_DISK_internal_file_handle_ (lsocks_write_fd,
1018 &lsocks_write, sizeof (HANDLE));
1019 GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
1020 (lsocks_pipe, GNUNET_DISK_PIPE_END_READ),
1021 &lsocks_read, sizeof (HANDLE));
1027 if (GNUNET_YES == pipe_control)
1029 GNUNET_asprintf (&our_env[env_off++], "%s=", GNUNET_OS_CONTROL_PIPE);
1030 GNUNET_asprintf (&our_env[env_off++], "%p", childpipe_read_handle);
1032 if ( (lsocks != NULL) && (lsocks[0] != INVALID_SOCKET))
1034 /*This will tell the child that we're going to send lsocks over the pipe*/
1035 GNUNET_asprintf (&our_env[env_off++], "%s=", "GNUNET_OS_READ_LSOCKS");
1036 GNUNET_asprintf (&our_env[env_off++], "%lu", lsocks_read);
1038 our_env[env_off++] = NULL;
1039 env_block = CreateCustomEnvTable (our_env);
1041 GNUNET_free_non_null (our_env[--env_off]);
1044 if (NULL == (wpath = u8_to_u16 ((uint8_t *) path, 1 + strlen (path), NULL, &wpath_len)))
1046 LOG (GNUNET_ERROR_TYPE_DEBUG,
1047 "Failed to convert `%s' from UTF-8 to UTF-16: %d\n", path, errno);
1048 GNUNET_free (env_block);
1051 GNUNET_DISK_pipe_close (lsocks_pipe);
1052 if (GNUNET_YES == pipe_control)
1054 GNUNET_DISK_file_close (childpipe_write);
1055 GNUNET_DISK_file_close (childpipe_read);
1061 if (NULL == (wcmd = u8_to_u16 ((uint8_t *) cmd, 1 + strlen (cmd), NULL, &wcmd_len)))
1063 LOG (GNUNET_ERROR_TYPE_DEBUG,
1064 "Failed to convert `%s' from UTF-8 to UTF-16: %d\n", cmd, errno);
1065 GNUNET_free (env_block);
1069 GNUNET_DISK_pipe_close (lsocks_pipe);
1070 if (GNUNET_YES == pipe_control)
1072 GNUNET_DISK_file_close (childpipe_write);
1073 GNUNET_DISK_file_close (childpipe_read);
1078 create_no_window = 0;
1080 HANDLE console_input = CreateFile ("CONIN$", GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
1081 if (INVALID_HANDLE_VALUE == console_input)
1082 create_no_window = CREATE_NO_WINDOW;
1084 CloseHandle (console_input);
1087 bresult = CreateProcessW (wpath, wcmd, NULL, NULL, GNUNET_YES,
1088 create_no_window | CREATE_SUSPENDED, env_block, NULL, &start, &proc);
1089 error_code = GetLastError ();
1091 if ((NULL == pipe_stdin) && (stdih))
1092 SetHandleInformation (stdih, HANDLE_FLAG_INHERIT, stdif);
1095 if ((NULL == pipe_stdout) && (stdoh))
1096 SetHandleInformation (stdoh, HANDLE_FLAG_INHERIT, stdof);
1099 SetHandleInformation (stdeh, HANDLE_FLAG_INHERIT, stdef);
1102 LOG (GNUNET_ERROR_TYPE_ERROR, "CreateProcess(%s, %s) failed: %lu\n", path, cmd, error_code);
1104 GNUNET_free (env_block);
1108 if (GNUNET_YES == pipe_control)
1110 GNUNET_DISK_file_close (childpipe_read);
1115 if (GNUNET_YES == pipe_control)
1117 GNUNET_DISK_file_close (childpipe_write);
1120 GNUNET_DISK_pipe_close (lsocks_pipe);
1121 SetErrnoFromWinError (error_code);
1125 gnunet_proc = GNUNET_new (struct GNUNET_OS_Process);
1126 gnunet_proc->pid = proc.dwProcessId;
1127 gnunet_proc->handle = proc.hProcess;
1128 gnunet_proc->control_pipe = childpipe_write;
1130 CreateThread (NULL, 64000, &child_wait_thread, (void *) gnunet_proc, 0, NULL);
1132 ResumeThread (proc.hThread);
1133 CloseHandle (proc.hThread);
1135 if ( (NULL == lsocks) || (INVALID_SOCKET == lsocks[0]) )
1138 GNUNET_DISK_pipe_close_end (lsocks_pipe, GNUNET_DISK_PIPE_END_READ);
1140 /* This is a replacement for "goto error" that doesn't use goto */
1149 /* Tell the number of sockets */
1150 for (count = 0; lsocks && lsocks[count] != INVALID_SOCKET; count++);
1152 wrote = GNUNET_DISK_file_write (lsocks_write_fd, &count, sizeof (count));
1153 if (sizeof (count) != wrote)
1155 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1156 "Failed to write %u count bytes to the child: %u\n",
1157 sizeof (count), GetLastError ());
1160 for (i = 0; lsocks && lsocks[i] != INVALID_SOCKET; i++)
1162 WSAPROTOCOL_INFOA pi;
1163 /* Get a socket duplication info */
1164 if (SOCKET_ERROR == WSADuplicateSocketA (lsocks[i], gnunet_proc->pid, &pi))
1166 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1167 "Failed to duplicate an socket[%llu]: %u\n", i,
1171 /* Synchronous I/O is not nice, but we can't schedule this:
1172 * lsocks will be closed/freed by the caller soon, and until
1173 * the child creates a duplicate, closing a socket here will
1174 * close it for good.
1176 /* Send the size of the structure
1177 * (the child might be built with different headers...)
1180 wrote = GNUNET_DISK_file_write (lsocks_write_fd, &size, sizeof (size));
1181 if (sizeof (size) != wrote)
1183 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1184 "Failed to write %u size[%llu] bytes to the child: %u\n",
1185 sizeof (size), i, GetLastError ());
1188 /* Finally! Send the data */
1189 wrote = GNUNET_DISK_file_write (lsocks_write_fd, &pi, sizeof (pi));
1190 if (sizeof (pi) != wrote)
1192 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1193 "Failed to write %u socket[%llu] bytes to the child: %u\n",
1194 sizeof (pi), i, GetLastError ());
1198 /* This will block us until the child makes a final read or closes
1199 * the pipe (hence no 'wrote' check), since we have to wait for it
1200 * to duplicate the last socket, before we return and start closing
1203 wrote = GNUNET_DISK_file_write (lsocks_write_fd, &count, sizeof (count));
1208 GNUNET_DISK_file_sync (lsocks_write_fd);
1209 GNUNET_DISK_pipe_close (lsocks_pipe);
1213 /* If we can't pass on the socket(s), the child will block forever,
1214 * better put it out of its misery.
1216 SafeTerminateProcess (gnunet_proc->handle, 0, 0);
1217 CloseHandle (gnunet_proc->handle);
1218 if (NULL != gnunet_proc->control_pipe)
1219 GNUNET_DISK_file_close (gnunet_proc->control_pipe);
1220 GNUNET_free (gnunet_proc);
1233 * @param pipe_control should a pipe be used to send signals to the child?
1234 * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
1235 * @param pipe_stdin pipe to use to send input to child process (or NULL)
1236 * @param pipe_stdout pipe to use to get output from child process (or NULL)
1237 * @param filename name of the binary
1238 * @param argv NULL-terminated array of arguments to the process
1239 * @return pointer to process structure of the new process, NULL on error
1241 struct GNUNET_OS_Process *
1242 GNUNET_OS_start_process_vap (int pipe_control,
1243 enum GNUNET_OS_InheritStdioFlags std_inheritance,
1244 struct GNUNET_DISK_PipeHandle *pipe_stdin,
1245 struct GNUNET_DISK_PipeHandle *pipe_stdout,
1246 struct GNUNET_DISK_PipeHandle *pipe_stderr,
1247 const char *filename,
1250 return start_process (pipe_control,
1264 * @param pipe_control should a pipe be used to send signals to the child?
1265 * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
1266 * @param pipe_stdin pipe to use to send input to child process (or NULL)
1267 * @param pipe_stdout pipe to use to get output from child process (or NULL)
1268 * @param filename name of the binary
1269 * @param va NULL-terminated list of arguments to the process
1270 * @return pointer to process structure of the new process, NULL on error
1272 struct GNUNET_OS_Process *
1273 GNUNET_OS_start_process_va (int pipe_control,
1274 enum GNUNET_OS_InheritStdioFlags std_inheritance,
1275 struct GNUNET_DISK_PipeHandle *pipe_stdin,
1276 struct GNUNET_DISK_PipeHandle *pipe_stdout,
1277 struct GNUNET_DISK_PipeHandle *pipe_stderr,
1278 const char *filename, va_list va)
1280 struct GNUNET_OS_Process *ret;
1287 while (NULL != va_arg (ap, char *))
1290 argv = GNUNET_malloc (sizeof (char *) * (argc + 1));
1293 while (NULL != (argv[argc] = va_arg (ap, char *)))
1296 ret = GNUNET_OS_start_process_vap (pipe_control,
1311 * @param pipe_control should a pipe be used to send signals to the child?
1312 * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
1313 * @param pipe_stdin pipe to use to send input to child process (or NULL)
1314 * @param pipe_stdout pipe to use to get output from child process (or NULL)
1315 * @param filename name of the binary
1316 * @param ... NULL-terminated list of arguments to the process
1317 * @return pointer to process structure of the new process, NULL on error
1319 struct GNUNET_OS_Process *
1320 GNUNET_OS_start_process (int pipe_control,
1321 enum GNUNET_OS_InheritStdioFlags std_inheritance,
1322 struct GNUNET_DISK_PipeHandle *pipe_stdin,
1323 struct GNUNET_DISK_PipeHandle *pipe_stdout,
1324 struct GNUNET_DISK_PipeHandle *pipe_stderr,
1325 const char *filename, ...)
1327 struct GNUNET_OS_Process *ret;
1330 va_start (ap, filename);
1331 ret = GNUNET_OS_start_process_va (pipe_control,
1346 * @param pipe_control should a pipe be used to send signals to the child?
1347 * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags controlling which
1348 * std handles of the parent are inherited by the child.
1349 * pipe_stdin and pipe_stdout take priority over std_inheritance
1350 * (when they are non-NULL).
1351 * @param lsocks array of listen sockets to dup systemd-style (or NULL);
1352 * must be NULL on platforms where dup is not supported
1353 * @param filename name of the binary
1354 * @param argv NULL-terminated list of arguments to the process
1355 * @return process ID of the new process, -1 on error
1357 struct GNUNET_OS_Process *
1358 GNUNET_OS_start_process_v (int pipe_control,
1359 enum GNUNET_OS_InheritStdioFlags std_inheritance,
1360 const SOCKTYPE *lsocks,
1361 const char *filename,
1364 return start_process (pipe_control,
1376 * Start a process. This function is similar to the GNUNET_OS_start_process_*
1377 * except that the filename and arguments can have whole strings which contain
1378 * the arguments. These arguments are to be separated by spaces and are parsed
1379 * in the order they appear. Arguments containing spaces can be used by
1380 * quoting them with @em ".
1382 * @param pipe_control should a pipe be used to send signals to the child?
1383 * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
1384 * @param lsocks array of listen sockets to dup systemd-style (or NULL);
1385 * must be NULL on platforms where dup is not supported
1386 * @param filename name of the binary. It is valid to have the arguments
1387 * in this string when they are separated by spaces.
1388 * @param ... more arguments. Should be of type `char *`. It is valid
1389 * to have the arguments in these strings when they are separated by
1390 * spaces. The last argument MUST be NULL.
1391 * @return pointer to process structure of the new process, NULL on error
1393 struct GNUNET_OS_Process *
1394 GNUNET_OS_start_process_s (int pipe_control,
1395 unsigned int std_inheritance,
1396 const SOCKTYPE * lsocks,
1397 const char *filename, ...)
1401 unsigned int argv_size;
1407 struct GNUNET_OS_Process *proc;
1414 va_start (ap, filename);
1421 while ('\0' != *rpos)
1430 if ( (' ' == *rpos) && (0 == quote_on) )
1436 while (' ' == *rpos)
1439 if ( (NULL == last) && ('\0' != *rpos) ) // FIXME: == or !=?
1447 while (NULL != (arg = (va_arg (ap, const char*))));
1450 argv = GNUNET_malloc (argv_size * sizeof (char *));
1452 va_start (ap, filename);
1457 cp = GNUNET_strdup (arg);
1460 while ('\0' != *pos)
1469 if ( (' ' == *pos) && (0 == quote_on) )
1473 argv[argv_size++] = GNUNET_strdup (last);
1479 if ( (NULL == last) && ('\0' != *pos)) // FIXME: == or !=?
1485 argv[argv_size++] = GNUNET_strdup (last);
1489 while (NULL != (arg = (va_arg (ap, const char*))));
1491 argv[argv_size] = NULL;
1493 for(i = 0; i < argv_size; i++)
1495 len = strlen (argv[i]);
1496 if ( (argv[i][0] == '"') && (argv[i][len-1] == '"'))
1498 memmove (&argv[i][0], &argv[i][1], len - 2);
1499 argv[i][len-2] = '\0';
1502 binary_path = argv[0];
1503 proc = GNUNET_OS_start_process_v (pipe_control, std_inheritance, lsocks,
1505 while (argv_size > 0)
1506 GNUNET_free (argv[--argv_size]);
1513 * Retrieve the status of a process, waiting on him if dead.
1514 * Nonblocking version.
1516 * @param proc process ID
1517 * @param type status type
1518 * @param code return code/signal number
1519 * @return GNUNET_OK on success, GNUNET_NO if the process is still running, GNUNET_SYSERR otherwise
1522 GNUNET_OS_process_status (struct GNUNET_OS_Process *proc,
1523 enum GNUNET_OS_ProcessStatusType *type,
1524 unsigned long *code)
1530 GNUNET_assert (0 != proc);
1531 ret = waitpid (proc->pid, &status, WNOHANG);
1534 LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "waitpid");
1535 return GNUNET_SYSERR;
1539 *type = GNUNET_OS_PROCESS_RUNNING;
1543 if (proc->pid != ret)
1545 LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "waitpid");
1546 return GNUNET_SYSERR;
1548 if (WIFEXITED (status))
1550 *type = GNUNET_OS_PROCESS_EXITED;
1551 *code = WEXITSTATUS (status);
1553 else if (WIFSIGNALED (status))
1555 *type = GNUNET_OS_PROCESS_SIGNALED;
1556 *code = WTERMSIG (status);
1558 else if (WIFSTOPPED (status))
1560 *type = GNUNET_OS_PROCESS_SIGNALED;
1561 *code = WSTOPSIG (status);
1564 else if (WIFCONTINUED (status))
1566 *type = GNUNET_OS_PROCESS_RUNNING;
1572 *type = GNUNET_OS_PROCESS_UNKNOWN;
1577 DWORD c, error_code, ret;
1581 if (h == NULL || ret == 0)
1583 LOG (GNUNET_ERROR_TYPE_WARNING, "Invalid process information {%d, %08X}\n",
1585 return GNUNET_SYSERR;
1588 h = GetCurrentProcess ();
1591 ret = GetExitCodeProcess (h, &c);
1592 error_code = GetLastError ();
1593 if (ret == 0 || error_code != NO_ERROR)
1595 SetErrnoFromWinError (error_code);
1596 LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "GetExitCodeProcess");
1597 return GNUNET_SYSERR;
1599 if (STILL_ACTIVE == c)
1601 *type = GNUNET_OS_PROCESS_RUNNING;
1605 *type = GNUNET_OS_PROCESS_EXITED;
1614 * Wait for a process
1616 * @param proc pointer to process structure
1617 * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
1620 GNUNET_OS_process_wait (struct GNUNET_OS_Process *proc)
1623 pid_t pid = proc->pid;
1626 while ( (pid != (ret = waitpid (pid, NULL, 0))) &&
1627 (EINTR == errno) ) ;
1630 LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "waitpid");
1631 return GNUNET_SYSERR;
1640 LOG (GNUNET_ERROR_TYPE_WARNING, "Invalid process information {%d, %08X}\n",
1642 return GNUNET_SYSERR;
1645 h = GetCurrentProcess ();
1647 if (WAIT_OBJECT_0 != WaitForSingleObject (h, INFINITE))
1649 SetErrnoFromWinError (GetLastError ());
1650 return GNUNET_SYSERR;
1658 * Handle to a command.
1660 struct GNUNET_OS_CommandHandle
1666 struct GNUNET_OS_Process *eip;
1669 * Handle to the output pipe.
1671 struct GNUNET_DISK_PipeHandle *opipe;
1674 * Read-end of output pipe.
1676 const struct GNUNET_DISK_FileHandle *r;
1679 * Function to call on each line of output.
1681 GNUNET_OS_LineProcessor proc;
1684 * Closure for 'proc'.
1689 * Buffer for the output.
1694 * Task reading from pipe.
1696 GNUNET_SCHEDULER_TaskIdentifier rtask;
1701 struct GNUNET_TIME_Absolute timeout;
1704 * Current read offset in buf.
1711 * Stop/kill a command. Must ONLY be called either from
1712 * the callback after 'NULL' was passed for 'line' *OR*
1713 * from an independent task (not within the line processor).
1715 * @param cmd handle to the process
1718 GNUNET_OS_command_stop (struct GNUNET_OS_CommandHandle *cmd)
1720 if (NULL != cmd->proc)
1722 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != cmd->rtask);
1723 GNUNET_SCHEDULER_cancel (cmd->rtask);
1725 (void) GNUNET_OS_process_kill (cmd->eip, SIGKILL);
1726 GNUNET_break (GNUNET_OK == GNUNET_OS_process_wait (cmd->eip));
1727 GNUNET_OS_process_destroy (cmd->eip);
1728 GNUNET_DISK_pipe_close (cmd->opipe);
1734 * Read from the process and call the line processor.
1736 * @param cls the 'struct GNUNET_OS_CommandHandle'
1737 * @param tc scheduler context
1740 cmd_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1742 struct GNUNET_OS_CommandHandle *cmd = cls;
1743 GNUNET_OS_LineProcessor proc;
1747 cmd->rtask = GNUNET_SCHEDULER_NO_TASK;
1748 if (GNUNET_YES != GNUNET_NETWORK_fdset_handle_isset (tc->read_ready, cmd->r))
1750 /* timeout, shutdown, etc. */
1753 proc (cmd->proc_cls, NULL);
1757 GNUNET_DISK_file_read (cmd->r, &cmd->buf[cmd->off],
1758 sizeof (cmd->buf) - cmd->off);
1761 if ((cmd->off > 0) && (cmd->off < sizeof (cmd->buf)))
1763 cmd->buf[cmd->off] = '\0';
1764 cmd->proc (cmd->proc_cls, cmd->buf);
1768 proc (cmd->proc_cls, NULL);
1771 end = memchr (&cmd->buf[cmd->off], '\n', ret);
1776 cmd->proc (cmd->proc_cls, cmd->buf);
1777 memmove (cmd->buf, end + 1, cmd->off - (end + 1 - cmd->buf));
1778 cmd->off -= (end + 1 - cmd->buf);
1779 end = memchr (cmd->buf, '\n', cmd->off);
1782 GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_absolute_get_remaining
1783 (cmd->timeout), cmd->r, &cmd_read, cmd);
1788 * Run the given command line and call the given function
1789 * for each line of the output.
1791 * @param proc function to call for each line of the output
1792 * @param proc_cls closure for proc
1793 * @param timeout when to time out
1794 * @param binary command to run
1795 * @param ... arguments to command
1796 * @return NULL on error
1798 struct GNUNET_OS_CommandHandle *
1799 GNUNET_OS_command_run (GNUNET_OS_LineProcessor proc, void *proc_cls,
1800 struct GNUNET_TIME_Relative timeout, const char *binary,
1803 struct GNUNET_OS_CommandHandle *cmd;
1804 struct GNUNET_OS_Process *eip;
1805 struct GNUNET_DISK_PipeHandle *opipe;
1808 opipe = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_NO, GNUNET_YES);
1811 va_start (ap, binary);
1812 /* redirect stdout, don't inherit stderr/stdin */
1813 eip = GNUNET_OS_start_process_va (GNUNET_NO, 0, NULL, opipe, NULL, binary, ap);
1817 GNUNET_DISK_pipe_close (opipe);
1820 GNUNET_DISK_pipe_close_end (opipe, GNUNET_DISK_PIPE_END_WRITE);
1821 cmd = GNUNET_new (struct GNUNET_OS_CommandHandle);
1822 cmd->timeout = GNUNET_TIME_relative_to_absolute (timeout);
1826 cmd->proc_cls = proc_cls;
1827 cmd->r = GNUNET_DISK_pipe_handle (opipe, GNUNET_DISK_PIPE_END_READ);
1828 cmd->rtask = GNUNET_SCHEDULER_add_read_file (timeout, cmd->r, &cmd_read, cmd);
1833 /* end of os_priority.c */