5 #if defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__NetBSD__)
7 # include <sys/resource.h>
14 #include <sys/types.h>
18 #ifdef HAVE_SYS_WAIT_H
19 # include <sys/wait.h>
23 #include "ecore_private.h"
26 /* FIXME: Getting respawn to work
28 * There is no way that we can do anything about the internal state info of
29 * an external exe. The same can be said about the state of user code. User
30 * code in this context means the code that is using ecore_exe to manage exe's
33 * Document that the exe must be respawnable, in other words, there is no
34 * state that it cannot regenerate by just killing it and starting it again.
35 * This includes state that the user code knows about, as the respawn is
36 * transparent to that code. On the other hand, maybe a respawn event might
37 * be useful, or maybe resend the currently non existent add event. For
38 * consistancy with ecore_con, an add event is good anyway.
40 * The Ecore_exe structure is reused for respawning, so that the (opaque)
41 * pointer held by the user remains valid. This means that the Ecore_Exe
42 * init and del functions may need to be split into two parts each to avoid
43 * duplicating code - common code part, and the rest. This implies that
44 * the unchanging members mentioned next should NEVER change.
46 * These structure members don't need to change -
47 * __list_data - we stay on the list
48 * ECORE_MAGIC - this is a constant
49 * data - passed in originally
50 * cmd - passed in originally
51 * flags - passed in originally
53 * These structure members need to change -
54 * tag - state that must be regenerated, zap it
55 * pid - it will be different
56 * child_fd_write - it will be different
57 * child_fd_read - it will be different
58 * child_fd_error - it will be different
59 * write_fd_handler - we cannot change the fd used by a handler, this changes coz the fd changes.
60 * read_fd_handler - we cannot change the fd used by a handler, this changes coz the fd changes.
61 * error_fd_handler - we cannot change the fd used by a handler, this changes coz the fd changes.
63 * Hmm, the read, write, and error buffers could be tricky.
64 * They are not atomic, and could be in a semi complete state.
65 * They fall into the "state must be regenerated" mentioned above.
66 * A respawn/add event should take care of it.
68 * These structure members need to change -
69 * write_data_buf - state that must be regenerated, zap it
70 * write_data_size - state that must be regenerated, zap it
71 * write_data_offset - state that must be regenerated, zap it
72 * read_data_buf - state that must be regenerated, zap it
73 * read_data_size - state that must be regenerated, zap it
74 * error_data_buf - state that must be regenerated, zap it
75 * error_data_size - state that must be regenerated, zap it
76 * close_write - state that must be regenerated, zap it
78 * There is the problem that an exe that fell over and needs respawning
79 * might keep falling over, keep needing to be respawned, and tie up system
80 * resources with the constant respawning. An exponentially increasing
81 * timeout (with maximum timeout) between respawns should take care of that.
82 * Although this is not a "contention for a resource" problem, the exe falling
83 * over may be, so a random element added to the timeout may help, and won't
84 * hurt. The user code may need to be informed that a timeout is in progress.
94 Ecore_Exe_Flags flags;
95 Ecore_Fd_Handler *write_fd_handler; /* the fd_handler to handle write to child - if this was used, or NULL if not */
96 Ecore_Fd_Handler *read_fd_handler; /* the fd_handler to handle read from child - if this was used, or NULL if not */
97 Ecore_Fd_Handler *error_fd_handler; /* the fd_handler to handle errors from child - if this was used, or NULL if not */
98 void *write_data_buf; /* a data buffer for data to write to the child -
99 * realloced as needed for more data and flushed when the fd handler says writes are possible
101 int write_data_size; /* the size in bytes of the data buffer */
102 int write_data_offset; /* the offset in bytes in the data buffer */
103 void *read_data_buf; /* data read from the child awating delivery to an event */
104 int read_data_size; /* data read from child in bytes */
105 void *error_data_buf; /* errors read from the child awating delivery to an event */
106 int error_data_size; /* errors read from child in bytes */
107 int child_fd_write; /* fd to write TO to send data to the child */
108 int child_fd_read; /* fd to read FROM when child has sent us (the parent) data */
109 int child_fd_error; /* fd to read FROM when child has sent us (the parent) errors */
110 int child_fd_write_x; /* fd to write TO to send data to the child */
111 int child_fd_read_x; /* fd to read FROM when child has sent us (the parent) data */
112 int child_fd_error_x; /* fd to read FROM when child has sent us (the parent) errors */
113 Eina_Bool close_stdin : 1;
115 int start_bytes, end_bytes, start_lines, end_lines; /* Number of bytes/lines to auto pipe at start/end of stdout/stderr. */
117 Ecore_Timer *doomsday_clock; /* The Timer of Death. Muahahahaha. */
118 void *doomsday_clock_dead; /* data for the doomsday clock */
120 Ecore_Exe_Cb pre_free_cb;
124 /* TODO: Something to let people build a command line and does auto escaping -
126 * ecore_exe_snprintf()
130 * cmd = ecore_exe_comand_parameter_append(cmd, "firefox");
131 * cmd = ecore_exe_comand_parameter_append(cmd, "http://www.foo.com/bar.html?baz=yes");
132 * each parameter appended is one argument, and it gets escaped, quoted, and
133 * appended with a preceding space. The first is the command off course.
136 struct _ecore_exe_dead_exe
142 static inline void _ecore_exe_exec_it(const char *exe_cmd, Ecore_Exe_Flags flags);
143 static Eina_Bool _ecore_exe_data_generic_handler(void *data, Ecore_Fd_Handler *fd_handler, Ecore_Exe_Flags flags);
144 static Eina_Bool _ecore_exe_data_error_handler(void *data, Ecore_Fd_Handler *fd_handler);
145 static Eina_Bool _ecore_exe_data_read_handler(void *data, Ecore_Fd_Handler *fd_handler);
146 static Eina_Bool _ecore_exe_data_write_handler(void *data, Ecore_Fd_Handler *fd_handler);
147 static void _ecore_exe_flush(Ecore_Exe * exe);
148 static void _ecore_exe_event_exe_data_free(void *data __UNUSED__, void *ev);
149 static Ecore_Exe *_ecore_exe_is_it_alive(pid_t pid);
150 static Eina_Bool _ecore_exe_make_sure_its_dead(void *data);
151 static Eina_Bool _ecore_exe_make_sure_its_really_dead(void *data);
152 static Ecore_Exe_Event_Add *_ecore_exe_event_add_new(void);
153 static void _ecore_exe_event_add_free(void *data, void *ev);
154 static void _ecore_exe_dead_attach(Ecore_Exe *exe);
156 EAPI int ECORE_EXE_EVENT_ADD = 0;
157 EAPI int ECORE_EXE_EVENT_DEL = 0;
158 EAPI int ECORE_EXE_EVENT_DATA = 0;
159 EAPI int ECORE_EXE_EVENT_ERROR = 0;
161 static Ecore_Exe *exes = NULL;
162 static const char *shell = NULL;
164 /* FIXME: This errno checking stuff should be put elsewhere for everybody to use.
165 * For now it lives here though, just to make testing easier.
167 static int _ecore_exe_check_errno(int result, const char *file, int line);
169 #define E_IF_NO_ERRNO(result, foo, ok) \
170 while (((ok) = _ecore_exe_check_errno( (result) = (foo), __FILE__, __LINE__)) == -1) sleep(1); \
173 #define E_NO_ERRNO(result, foo, ok) \
174 while (((ok) = _ecore_exe_check_errno( (result) = (foo), __FILE__, __LINE__)) == -1) sleep(1)
176 #define E_IF_NO_ERRNO_NOLOOP(result, foo, ok) \
177 if (((ok) = _ecore_exe_check_errno( (result) = (foo), __FILE__, __LINE__)))
180 _ecore_exe_check_errno(int result, const char *file, int line)
182 int saved_errno = errno;
186 perror("*** errno reports ");
187 /* What is currently supported -
190 * EFAULT Argument is not valid.
191 * EMFILE Too many file descriptors used by process.
192 * ENFILE Too many open files by system.
194 * EAGAIN No data now, try again.
195 * EBADF This is not an fd that can be read.
196 * EFAULT This is not a valid buffer.
197 * EINTR Interupted by signal, try again.
198 * EINVAL This is not an fd that can be read.
200 * EISDIR This is a directory, and cannot be read.
201 * others Depending on what sort of thing we are reading from.
203 * EBADF This is not an fd that can be closed.
204 * EINTR Interupted by signal, try again.
207 * EBADF This is not an fd that can be dup2'ed.
208 * EBUSY Race condition between open() and dup()
209 * EINTR Interupted by signal, try again.
210 * EMFILE Too many file descriptors used by process.
212 * EACCES, EAGAIN Locked or mapped by something else, try again later.
213 * EBADF This is not an fd that can be fcntl'ed.
214 * EDEADLK This will cause a deadlock.
215 * EFAULT This is not a valid lock.
216 * EINTR Interupted by signal, try again.
217 * EINVAL This is not a valid arg.
218 * EMFILE Too many file descriptors used by process.
219 * ENOLCK Problem getting a lock.
220 * EPERM Not allowed to do that.
222 * EBADF This is not an fd that is open for writing.
223 * EINVAL, EROFS This is not an fd that can be fsynced.
230 * E_IF_NO_ERRNO(result, foo(bar), ok)
232 * E_IF_NO_ERRNO_NOLOOP(result, foo(bar), ok)
239 * // Something failed, cleanup.
247 { /* Not now, try later. */
248 ERR("*** Must try again in %s @%u.", file, line);
255 { /* Low on resources. */
256 ERR("*** Low on resources in %s @%u.", file,
263 ERR("*** I/O error in %s @%u.", file, line);
275 { /* Programmer fucked up. */
276 ERR("*** NAUGHTY PROGRAMMER!!!\n"
277 "*** SPANK SPANK SPANK!!!\n"
278 "*** Now go fix your code in %s @%u. Tut tut tut!",
284 { /* Unsupported errno code, please add this one. */
285 ERR("*** NAUGHTY PROGRAMMER!!!\n"
286 "*** SPANK SPANK SPANK!!!\n"
287 "*** Unsupported errno code %d, please add this one.\n"
288 "*** Now go fix your code in %s @%u, from %s @%u. Tut tut tut!",
289 saved_errno, __FILE__, __LINE__, file, line);
295 else /* Everything is fine. */
304 * @addtogroup Ecore_Group Ecore - Main Loop and Job Functions.
310 * @addtogroup Ecore_Exe_Group Process Spawning Functions
312 * Functions that deal with and send signals to spawned processes.
317 static int run_pri = ECORE_EXE_PRIORITY_INHERIT;
320 * Sets the priority at which to launch processes
322 * This sets the priority of processes run by ecore_exe_run() and
323 * ecore_exe_pipe_run().
324 * @li On Windows, the child process is created by default with the
325 * #ECORE_EXE_WIN32_PRIORITY_NORMAL priority, unless the calling
326 * process is in #ECORE_EXE_WIN32_PRIORITY_IDLE or
327 * #ECORE_EXE_WIN32_PRIORITY_BELOW_NORMAL priority. In that case, the
328 * child process inherits this priority.
329 * @li On other platforms, if set to #ECORE_EXE_PRIORITY_INHERIT child
330 * processes inherits the priority of their parent. This is the default.
332 * @param pri value a Ecore_Exe_Win32_Priority value on Windows, -20
333 * to 19 or ECORE_EXE_PRIORITY_INHERIT on other OS.
336 ecore_exe_run_priority_set(int pri)
342 * Gets the priority at which to launch processes
344 * This gets ths priority of launched processes. See
345 * ecore_exe_run_priority_set() for details. This just returns the value set
348 * @return the value set by ecore_exe_run_priority_set()
351 ecore_exe_run_priority_get(void)
357 * Spawns a child process.
359 * This is now just a thin wrapper around ecore_exe_pipe_run()
361 * @param exe_cmd The command to run with @c /bin/sh.
362 * @param data Data to attach to the returned process handle.
363 * @return A process handle to the spawned process.
366 ecore_exe_run(const char *exe_cmd, const void *data)
368 return ecore_exe_pipe_run(exe_cmd, 0, data);
372 * Spawns a child process with its stdin/out available for communication.
374 * This function forks and runs the given command using @c /bin/sh.
376 * Note that the process handle is only valid until a child process
377 * terminated event is received. After all handlers for the child process
378 * terminated event have been called, the handle will be freed by Ecore.
380 * This function does the same thing as ecore_exe_run(), but also makes the
381 * standard in and/or out as well as stderr from the child process available
382 * for reading or writing. To write use ecore_exe_send(). To read listen to
383 * ECORE_EXE_EVENT_DATA or ECORE_EXE_EVENT_ERROR events (set up handlers).
384 * Ecore may buffer read and error data until a newline character if asked
385 * for with the @p flags. All data will be included in the events (newlines
386 * will be replaced with NULLS if line buffered). ECORE_EXE_EVENT_DATA events
387 * will only happen if the process is run with ECORE_EXE_PIPE_READ enabled
388 * in the flags. The same with the error version. Writing will only be
389 * allowed with ECORE_EXE_PIPE_WRITE enabled in the flags.
391 * @param exe_cmd The command to run with @c /bin/sh.
392 * @param flags The flag parameters for how to deal with inter-process I/O
393 * @param data Data to attach to the returned process handle.
394 * @return A process handle to the spawned process.
397 ecore_exe_pipe_run(const char *exe_cmd, Ecore_Exe_Flags flags, const void *data)
399 Ecore_Exe *exe = NULL;
400 int statusPipe[2] = { -1, -1 };
401 int errorPipe[2] = { -1, -1 };
402 int readPipe[2] = { -1, -1 };
403 int writePipe[2] = { -1, -1 };
408 if (!exe_cmd) return NULL;
409 exe = calloc(1, sizeof(Ecore_Exe));
410 if (!exe) return NULL;
412 if ((flags & ECORE_EXE_PIPE_AUTO) && (!(flags & ECORE_EXE_PIPE_ERROR))
413 && (!(flags & ECORE_EXE_PIPE_READ)))
414 /* We need something to auto pipe. */
415 flags |= ECORE_EXE_PIPE_READ | ECORE_EXE_PIPE_ERROR;
417 exe->child_fd_error = -1;
418 exe->child_fd_read = -1;
419 exe->child_fd_write = -1;
420 exe->child_fd_error_x = -1;
421 exe->child_fd_read_x = -1;
422 exe->child_fd_write_x = -1;
424 /* Create some pipes. */
427 E_IF_NO_ERRNO_NOLOOP(result, pipe(statusPipe), ok)
431 if (ok && (flags & ECORE_EXE_PIPE_ERROR))
433 E_IF_NO_ERRNO_NOLOOP(result, pipe(errorPipe), ok)
435 exe->child_fd_error = errorPipe[0];
436 exe->child_fd_error_x = errorPipe[1];
439 if (ok && (flags & ECORE_EXE_PIPE_READ))
441 E_IF_NO_ERRNO_NOLOOP(result, pipe(readPipe), ok)
443 exe->child_fd_read = readPipe[0];
444 exe->child_fd_read_x = readPipe[1];
447 if (ok && (flags & ECORE_EXE_PIPE_WRITE))
449 E_IF_NO_ERRNO_NOLOOP(result, pipe(writePipe), ok)
451 exe->child_fd_write = writePipe[1];
452 exe->child_fd_write_x = writePipe[0];
458 volatile int vfork_exec_errno = 0;
460 /* FIXME: I should double check this. After a quick look around, this is already done, but via a more modern method. */
461 /* signal(SIGPIPE, SIG_IGN); We only want EPIPE on errors */
466 ERR("Failed to fork process");
469 else if (pid == 0) /* child */
471 if (run_pri != ECORE_EXE_PRIORITY_INHERIT)
473 if ((run_pri >= -20) && (run_pri <= 19))
474 setpriority(PRIO_PROCESS, 0, run_pri);
476 /* dup2 STDERR, STDIN, and STDOUT. dup2() allegedly closes the
477 * second pipe if it's open. On the other hand, there was the
478 * Great FD Leak Scare of '06, so let's be paranoid. */
479 if (ok && (flags & ECORE_EXE_PIPE_ERROR))
481 E_NO_ERRNO(result, close(STDERR_FILENO), ok);
482 E_NO_ERRNO(result, dup2(errorPipe[1], STDERR_FILENO), ok);
484 if (ok && (flags & ECORE_EXE_PIPE_READ))
486 E_NO_ERRNO(result, close(STDOUT_FILENO), ok);
487 E_NO_ERRNO(result, dup2(readPipe[1], STDOUT_FILENO), ok);
489 if (ok && (flags & ECORE_EXE_PIPE_WRITE))
491 E_NO_ERRNO(result, close(STDIN_FILENO), ok);
492 E_NO_ERRNO(result, dup2(writePipe[0], STDIN_FILENO), ok);
497 /* Setup the status pipe. */
498 E_NO_ERRNO(result, close(statusPipe[0]), ok);
499 E_IF_NO_ERRNO(result, fcntl(statusPipe[1], F_SETFD, FD_CLOEXEC), ok) /* close on exec shows success */
501 /* Run the actual command. */
502 _ecore_exe_exec_it(exe_cmd, flags); /* no return */
506 /* Something went 'orribly wrong. */
507 vfork_exec_errno = errno;
509 /* Close the pipes. */
510 if (flags & ECORE_EXE_PIPE_ERROR)
511 E_NO_ERRNO(result, close(errorPipe[1]), ok);
512 if (flags & ECORE_EXE_PIPE_READ)
513 E_NO_ERRNO(result, close(readPipe[1]), ok);
514 if (flags & ECORE_EXE_PIPE_WRITE)
515 E_NO_ERRNO(result, close(writePipe[0]), ok);
516 E_NO_ERRNO(result, close(statusPipe[1]), ok);
522 /* Close the unused pipes. */
523 E_NO_ERRNO(result, close(statusPipe[1]), ok);
525 /* FIXME: after having a good look at the current e fd
526 * handling, investigate fcntl(dataPipe[x], F_SETSIG, ...) */
527 /* FIXME: above F_SETSIG etc. - this is async SIGIO based IO
528 * which is also linux specific so we probably don't want to
529 * do this as long as select() is working fine. the only time
530 * we really want to think of SIGIO async IO is when it all
531 * actually works basically everywhere and we can turn all
532 * IO into DMA async activities (i.e. you do a read() then
533 * the read is complete not on return but when you get a
534 * SIGIO - the read() just starts the transfer and it is
535 * completed in the background by DMA (or whatever mechanism
536 * the kernel choses)) */
538 /* Wait for it to start executing. */
539 /* FIXME: this doesn't seem very nice - we sit and block
540 * waiting on a child process... even though it's just
541 * the segment between the fork() and the exec) it just feels
547 E_NO_ERRNO(result, read(statusPipe[0], &buf, 1), ok);
550 if (vfork_exec_errno != 0)
552 n = vfork_exec_errno;
553 ERR("Could not start \"%s\"", exe_cmd);
560 /* Close the status pipe. */
561 E_NO_ERRNO(result, close(statusPipe[0]), ok);
566 /* Setup the exe structure. */
567 ECORE_MAGIC_SET(exe, ECORE_MAGIC_EXE);
568 exe->start_bytes = -1;
570 exe->start_lines = -1;
574 exe->data = (void *)data;
575 if ((exe->cmd = strdup(exe_cmd)))
577 if (flags & ECORE_EXE_PIPE_ERROR)
578 { /* Setup the error stuff. */
579 E_IF_NO_ERRNO(result,
580 fcntl(exe->child_fd_error, F_SETFL,
582 E_IF_NO_ERRNO(result,
583 fcntl(exe->child_fd_error, F_SETFD,
585 E_IF_NO_ERRNO(result,
586 fcntl(exe->child_fd_error_x, F_SETFD,
589 exe->error_fd_handler =
590 ecore_main_fd_handler_add(exe->child_fd_error,
592 _ecore_exe_data_error_handler,
594 if (!exe->error_fd_handler)
598 if (ok && (flags & ECORE_EXE_PIPE_READ))
599 { /* Setup the read stuff. */
600 E_IF_NO_ERRNO(result,
601 fcntl(exe->child_fd_read, F_SETFL,
603 E_IF_NO_ERRNO(result,
604 fcntl(exe->child_fd_read, F_SETFD,
606 E_IF_NO_ERRNO(result,
607 fcntl(exe->child_fd_read_x, F_SETFD,
610 exe->read_fd_handler =
611 ecore_main_fd_handler_add(exe->child_fd_read,
613 _ecore_exe_data_read_handler,
615 if (!exe->read_fd_handler)
619 if (ok && (flags & ECORE_EXE_PIPE_WRITE))
620 { /* Setup the write stuff. */
621 E_IF_NO_ERRNO(result,
622 fcntl(exe->child_fd_write, F_SETFL,
624 E_IF_NO_ERRNO(result,
625 fcntl(exe->child_fd_write, F_SETFD,
627 E_IF_NO_ERRNO(result,
628 fcntl(exe->child_fd_write_x, F_SETFD,
631 exe->write_fd_handler =
632 ecore_main_fd_handler_add(exe->child_fd_write,
634 _ecore_exe_data_write_handler,
636 if (exe->write_fd_handler)
637 ecore_main_fd_handler_active_set(exe->write_fd_handler, 0); /* Nothing to write to start with. */
643 exes = (Ecore_Exe *) eina_inlist_append(EINA_INLIST_GET(exes), EINA_INLIST_GET(exe));
654 { /* Something went wrong, so pull down everything. */
655 if (exe->pid) ecore_exe_terminate(exe);
656 IF_FN_DEL(ecore_exe_free, exe);
660 Ecore_Exe_Event_Add *e;
662 e = _ecore_exe_event_add_new();
664 if (e) /* Send the event. */
665 ecore_event_add(ECORE_EXE_EVENT_ADD, e,
666 _ecore_exe_event_add_free, NULL);
667 /* INF("Running as %d for %s.\n", exe->pid, exe->cmd); */
675 * Defines a function to be called before really freeing the handle data.
677 * This might be useful for language bindings such as Python and Perl
678 * that need to deallocate wrappers associated with this handle.
680 * This handle should never be modified by this call. It should be
681 * considered informative only. All getters are valid when the given
682 * function is called back.
684 * @param exe The child process to attach the pre_free function.
685 * @param func The function to call before @a exe is freed.
688 ecore_exe_callback_pre_free_set(Ecore_Exe *exe, Ecore_Exe_Cb func)
690 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
692 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
693 "ecore_exe_callback_pre_free_set");
696 exe->pre_free_cb = func;
700 * Sends data to the given child process which it receives on stdin.
702 * This function writes to a child processes standard in, with unlimited
703 * buffering. This call will never block. It may fail if the system runs out
706 * @param exe The child process to send to
707 * @param data The data to send
708 * @param size The size of the data to send, in bytes
709 * @return EINA_TRUE if successful, EINA_FALSE on failure.
712 ecore_exe_send(Ecore_Exe * exe, const void *data, int size)
716 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
718 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_send");
722 if (exe->close_stdin)
724 ERR("Ecore_Exe %p stdin is closed! Cannot send %d bytes from %p",
729 if (exe->child_fd_write == -1)
731 ERR("Ecore_Exe %p created without ECORE_EXE_PIPE_WRITE! "
732 "Cannot send %d bytes from %p", exe, size, data);
736 buf = realloc(exe->write_data_buf, exe->write_data_size + size);
737 if (!buf) return EINA_FALSE;
739 exe->write_data_buf = buf;
740 memcpy((char *)exe->write_data_buf + exe->write_data_size, data, size);
741 exe->write_data_size += size;
743 if (exe->write_fd_handler)
744 ecore_main_fd_handler_active_set(exe->write_fd_handler, ECORE_FD_WRITE);
750 * The stdin of the given child process will close when the write buffer is empty.
752 * @param exe The child process
755 ecore_exe_close_stdin(Ecore_Exe *exe)
757 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
759 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_close_stdin");
762 exe->close_stdin = 1;
766 * Sets the auto pipe limits for the given process handle. On Windows
767 * this function does nothing.
769 * @param exe The given process handle.
770 * @param start_bytes limit of bytes at start of output to buffer.
771 * @param end_bytes limit of bytes at end of output to buffer.
772 * @param start_lines limit of lines at start of output to buffer.
773 * @param end_lines limit of lines at end of output to buffer.
776 ecore_exe_auto_limits_set(Ecore_Exe *exe, int start_bytes, int end_bytes, int start_lines, int end_lines)
778 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
780 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_auto_limits_set");
783 /* FIXME: sanitize the input. */
784 exe->start_bytes = start_bytes;
785 exe->end_bytes = end_bytes;
786 exe->start_lines = start_lines;
787 exe->end_lines = end_lines;
789 /* FIXME: get this can of worms working.
791 * capture stderr & stdout internally
793 * raster and onefang keep moving the goal posts on this one. It started out as
794 * "show users the error output if an exe fails" and is rapidly approaching
795 * "alternative method of getting the data, poll vs event driven". Some serious
796 * thinking needs to be applied to this. Do we really want to go that far? If
797 * so, we should change the names. The basic design will probably remain the
798 * same which ever way we go. The constant goal post moving is probably due to
799 * generic design methods leading to feature creep as we inspired each other to
800 * more generic designs. It does seem like the closer we get to poll driven,
801 * the more issues and corner cases there are.
803 * Instead of doing the usual register an event handler thing, we are ecore_exe,
804 * we can take some short cuts. Don't send the events, just leave the exe buffers
805 * as is until the user asks for them, then return the event.
807 * start = 0, end = 0; clogged arteries get flushed, everything is ignored.
808 * start = -1, end = -1; clogged arteries get transferred to internal buffers. Actually, either == -1 means buffer everything.
809 * start = X, end = 0; buffer first X out of clogged arteries, flush and ignore rest.
810 * start = 0, end = X; circular buffer X
811 * start = X, end = Y; buffer first X out of clogged arteries, circular buffer Y from beginning.
813 * bytes vs lines, which ever one reaches the limit first.
814 * Before we go beyond the start+end limit, leave the end buffer empty, and store both in the start buffer, coz they overlap.
815 * After we pass the the start+end limit, insert "\n...\n" at the end of the start buffer, copy the rest to the end buffer, then store in the end buffer.
818 * Spank programmer for polling data if polling is not turned on.
819 * Spank programmer for setting up event callbacks if polling is turned on.
820 * Spank programmer for freeing the event data if it came from the event system, as that autofrees.
821 * Spank the programmer if they try to set the limits bigger than what has been gathered & ignored already, coz they just lost data.
822 * Spank onefang and raster for opening this can of worms.
823 * Should we have separate out/err limits?
824 * Should we remove from the internal buffer the data that was delivered already?
825 * If so, what to do about limits, start, and end? They could loose their meaning.
830 * Gets the auto pipe data for the given process handle
832 * @param exe The given process handle.
833 * @param flags Is this a ECORE_EXE_PIPE_READ or ECORE_EXE_PIPE_ERROR?
835 EAPI Ecore_Exe_Event_Data *
836 ecore_exe_event_data_get(Ecore_Exe *exe, Ecore_Exe_Flags flags)
838 Ecore_Exe_Event_Data *e = NULL;
840 unsigned char *inbuf;
843 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
845 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_event_data_get");
849 /* Sort out what sort of event we are. */
850 if (flags & ECORE_EXE_PIPE_READ)
852 flags = ECORE_EXE_PIPE_READ;
853 if (exe->flags & ECORE_EXE_PIPE_READ_LINE_BUFFERED)
858 flags = ECORE_EXE_PIPE_ERROR;
859 if (exe->flags & ECORE_EXE_PIPE_ERROR_LINE_BUFFERED)
864 if (flags & ECORE_EXE_PIPE_READ)
866 inbuf = exe->read_data_buf;
867 inbuf_num = exe->read_data_size;
868 exe->read_data_buf = NULL;
869 exe->read_data_size = 0;
873 inbuf = exe->error_data_buf;
874 inbuf_num = exe->error_data_size;
875 exe->error_data_buf = NULL;
876 exe->error_data_size = 0;
879 e = calloc(1, sizeof(Ecore_Exe_Event_Data));
887 { /* Deal with line buffering. */
895 for (i = 0; i < inbuf_num; i++) /* Find the lines. */
897 if (inbuf[i] == '\n')
901 /* In testing, the lines seem to arrive in batches of 500 to 1000 lines at most, roughly speaking. */
902 max += 10; /* FIXME: Maybe keep track of the largest number of lines ever sent, and add half that many instead of 10. */
903 e->lines = realloc(e->lines, sizeof(Ecore_Exe_Event_Data_Line) * (max + 1)); /* Allow room for the NULL termination. */
905 /* raster said to leave the line endings as line endings, however -
906 * This is line buffered mode, we are not dealing with binary here, but lines.
907 * If we are not dealing with binary, we must be dealing with ASCII, unicode, or some other text format.
908 * Thus the user is most likely gonna deal with this text as strings.
909 * Thus the user is most likely gonna pass this data to str functions.
910 * rasters way - the endings are always gonna be '\n'; onefangs way - they will always be '\0'
911 * We are handing them the string length as a convenience.
912 * Thus if they really want it in raw format, they can e->lines[i].line[e->lines[i].size - 1] = '\n'; easily enough.
913 * In the default case, we can do this conversion quicker than the user can, as we already have the index and pointer.
914 * Let's make it easy on them to use these as standard C strings.
916 * onefang is proud to announce that he has just set a new personal record for the
917 * most over documentation of a simple assignment statement. B-)
920 e->lines[count].line = c;
921 e->lines[count].size = i - last;
923 c = (char *)&inbuf[last];
927 if (count == 0) /* No lines to send, cancel the event. */
929 _ecore_exe_event_exe_data_free(NULL, e);
932 else /* NULL terminate the array, so that people know where the end is. */
934 e->lines[count].line = NULL;
935 e->lines[count].size = 0;
937 if (i > last) /* Partial line left over, save it for next time. */
939 if (e) e->size = last;
940 if (flags & ECORE_EXE_PIPE_READ)
942 exe->read_data_size = i - last;
943 exe->read_data_buf = malloc(exe->read_data_size);
944 memcpy(exe->read_data_buf, c, exe->read_data_size);
948 exe->error_data_size = i - last;
949 exe->error_data_buf = malloc(exe->error_data_size);
950 memcpy(exe->error_data_buf, c, exe->error_data_size);
960 * Sets the string tag for the given process handle
962 * @param exe The given process handle.
963 * @param tag The string tag to set on the process handle.
966 ecore_exe_tag_set(Ecore_Exe *exe, const char *tag)
968 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
970 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_tag_set");
975 exe->tag = strdup(tag);
981 * Retrieves the tag attached to the given process handle. There is no need to
982 * free it as it just returns the internal pointer value. This value is only
983 * valid as long as the @p exe is valid or until the tag is set to something
984 * else on this @p exe.
986 * @param exe The given process handle.
987 * @return The string attached to @p exe. It is a handle to existing
988 * internal string and should not be modified, use
989 * ecore_exe_tag_set() to change it. It might be @c NULL.
992 ecore_exe_tag_get(const Ecore_Exe *exe)
994 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
996 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_tag_get");
1003 * Frees the given process handle.
1005 * Note that the process that the handle represents is unaffected by this
1008 * @param exe The given process handle.
1009 * @return The data attached to the handle when @ref ecore_exe_run was
1013 ecore_exe_free(Ecore_Exe *exe)
1019 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1021 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_free");
1027 if (exe->pre_free_cb)
1028 exe->pre_free_cb(data, exe);
1030 if (exe->doomsday_clock)
1032 struct _ecore_exe_dead_exe *dead;
1034 ecore_timer_del(exe->doomsday_clock);
1035 exe->doomsday_clock = NULL;
1036 dead = exe->doomsday_clock_dead;
1041 exe->doomsday_clock_dead = NULL;
1044 IF_FN_DEL(ecore_main_fd_handler_del, exe->write_fd_handler);
1045 IF_FN_DEL(ecore_main_fd_handler_del, exe->read_fd_handler);
1046 IF_FN_DEL(ecore_main_fd_handler_del, exe->error_fd_handler);
1047 if (exe->child_fd_write_x != -1)
1048 E_NO_ERRNO(result, close(exe->child_fd_write_x), ok);
1049 if (exe->child_fd_read_x != -1)
1050 E_NO_ERRNO(result, close(exe->child_fd_read_x), ok);
1051 if (exe->child_fd_error_x != -1)
1052 E_NO_ERRNO(result, close(exe->child_fd_error_x), ok);
1053 if (exe->child_fd_write != -1)
1054 E_NO_ERRNO(result, close(exe->child_fd_write), ok);
1055 if (exe->child_fd_read != -1)
1056 E_NO_ERRNO(result, close(exe->child_fd_read), ok);
1057 if (exe->child_fd_error != -1)
1058 E_NO_ERRNO(result, close(exe->child_fd_error), ok);
1059 IF_FREE(exe->write_data_buf);
1060 IF_FREE(exe->read_data_buf);
1061 IF_FREE(exe->error_data_buf);
1064 exes = (Ecore_Exe *) eina_inlist_remove(EINA_INLIST_GET(exes), EINA_INLIST_GET(exe));
1065 ECORE_MAGIC_SET(exe, ECORE_MAGIC_NONE);
1072 * Frees the given event data.
1074 * @param e The given event data.
1077 ecore_exe_event_data_free(Ecore_Exe_Event_Data *e)
1086 * Retrieves the process ID of the given spawned process.
1087 * @param exe Handle to the given spawned process.
1088 * @return The process ID on success. @c -1 otherwise.
1091 ecore_exe_pid_get(const Ecore_Exe *exe)
1093 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1095 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_pid_get");
1102 * Retrieves the command of the given spawned process.
1103 * @param exe Handle to the given spawned process.
1104 * @return The command on success. NULL otherwise. This string is the
1105 * pointer to the internal value and must not be modified in
1109 ecore_exe_cmd_get(const Ecore_Exe *exe)
1111 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1113 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_cmd_get");
1120 * Retrieves the data attached to the given process handle.
1121 * @param exe The given process handle.
1122 * @return The data pointer attached to @p exe Given to
1123 * ecore_exe_run() or ecore_exe_pipe_run()
1126 ecore_exe_data_get(const Ecore_Exe *exe)
1128 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1130 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_data_get");
1137 * Retrieves the flags attached to the given process handle.
1138 * @param exe The given process handle.
1139 * @return The flags attached to @p exe.
1141 EAPI Ecore_Exe_Flags
1142 ecore_exe_flags_get(const Ecore_Exe *exe)
1144 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1146 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_data_get");
1153 * Pauses the given process by sending it a @c SIGSTOP signal.
1154 * @param exe Process handle to the given process.
1157 ecore_exe_pause(Ecore_Exe *exe)
1159 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1161 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_pause");
1164 kill(exe->pid, SIGSTOP);
1168 * Continues the given paused process by sending it a @c SIGCONT signal.
1169 * @param exe Process handle to the given process.
1172 ecore_exe_continue(Ecore_Exe *exe)
1174 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1176 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_continue");
1179 kill(exe->pid, SIGCONT);
1183 * Sends the given spawned process a interrupt (@c SIGINT) signal.
1184 * @param exe Process handle to the given process.
1187 ecore_exe_interrupt(Ecore_Exe *exe)
1189 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1191 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_interrupt");
1194 _ecore_exe_dead_attach(exe);
1195 kill(exe->pid, SIGINT);
1199 * Sends the given spawned process a quit (@c SIGQUIT) signal.
1200 * @param exe Process handle to the given process.
1203 ecore_exe_quit(Ecore_Exe *exe)
1205 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1207 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_quit");
1210 _ecore_exe_dead_attach(exe);
1211 kill(exe->pid, SIGQUIT);
1215 * Sends the given spawned process a terminate (@c SIGTERM) signal.
1216 * @param exe Process handle to the given process.
1219 ecore_exe_terminate(Ecore_Exe *exe)
1221 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1223 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_terminate");
1226 _ecore_exe_dead_attach(exe);
1227 INF("Sending TERM signal to %s (%d).", exe->cmd, exe->pid);
1228 kill(exe->pid, SIGTERM);
1232 * Kills the given spawned process by sending it a @c SIGKILL signal.
1233 * @param exe Process handle to the given process.
1236 ecore_exe_kill(Ecore_Exe *exe)
1238 struct _ecore_exe_dead_exe *dead;
1240 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1242 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_kill");
1246 dead = calloc(1, sizeof(struct _ecore_exe_dead_exe));
1249 dead->pid = exe->pid;
1250 dead->cmd = strdup(exe->cmd);
1251 IF_FN_DEL(ecore_timer_del, exe->doomsday_clock);
1252 exe->doomsday_clock =
1253 ecore_timer_add(10.0, _ecore_exe_make_sure_its_really_dead, dead);
1256 INF("Sending KILL signal to %s (%d).", exe->cmd, exe->pid);
1257 kill(exe->pid, SIGKILL);
1261 * Sends a @c SIGUSR signal to the given spawned process.
1262 * @param exe Process handle to the given process.
1263 * @param num The number user signal to send. Must be either 1 or 2, or
1264 * the signal will be ignored.
1267 ecore_exe_signal(Ecore_Exe *exe, int num)
1269 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1271 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_signal");
1275 kill(exe->pid, SIGUSR1);
1277 kill(exe->pid, SIGUSR2);
1281 * Sends a @c SIGHUP signal to the given spawned process.
1282 * @param exe Process handle to the given process.
1285 ecore_exe_hup(Ecore_Exe *exe)
1287 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1289 ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE, "ecore_exe_hup");
1292 kill(exe->pid, SIGHUP);
1304 _ecore_exe_is_it_alive(pid_t pid)
1306 Ecore_Exe *exe = NULL;
1308 /* FIXME: There is no nice, safe, OS independent way to tell if a
1309 * particular PID is still alive. I have written code to do so
1310 * for my urunlevel busybox applet (http://urunlevel.sourceforge.net/),
1311 * but it's for linux only, and still not guaranteed.
1313 * So for now, we just check that a valid Ecore_Exe structure
1314 * exists for it. Even that is not a guarantee, as the structure
1315 * can be freed without killing the process.
1317 * I think we can safely put exe's into two categories, those users
1318 * that care about the life of the exe, and the run and forget type.
1319 * The run and forget type starts up the exe, then free's the
1320 * Ecore_Exe structure straight away. They can never call any of
1321 * the functions that can call this, so we don't worry about them.
1323 * Those user's that care about the life of exe's will keep the
1324 * Ecore_Exe structure around, terminate them eventually, or
1325 * register for exit events. For these ones the assumption
1326 * that valid Ecore_Exe struct == live exe is almost valid.
1328 * I will probably copy my urunlevel code into here someday.
1330 exe = _ecore_exe_find(pid);
1333 if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
1341 _ecore_exe_make_sure_its_dead(void *data)
1343 struct _ecore_exe_dead_exe *dead;
1348 Ecore_Exe *exe = NULL;
1350 if ((exe = _ecore_exe_is_it_alive(dead->pid)))
1353 INF("Sending KILL signal to allegedly dead %s (%d).",
1354 dead->cmd, dead->pid);
1356 INF("Sending KILL signal to allegedly dead PID %d.",
1358 exe->doomsday_clock =
1359 ecore_timer_add(10.0, _ecore_exe_make_sure_its_really_dead,
1361 kill(dead->pid, SIGKILL);
1369 return ECORE_CALLBACK_CANCEL;
1373 _ecore_exe_make_sure_its_really_dead(void *data)
1375 struct _ecore_exe_dead_exe *dead;
1380 Ecore_Exe *exe = NULL;
1382 if ((exe = _ecore_exe_is_it_alive(dead->pid)))
1384 ERR("RUN! The zombie wants to eat your brains! And your CPU!");
1386 INF("%s (%d) is not really dead.", dead->cmd, dead->pid);
1388 INF("PID %d is not really dead.", dead->pid);
1389 exe->doomsday_clock = NULL;
1394 return ECORE_CALLBACK_CANCEL;
1398 _ecore_exe_init(void)
1400 ECORE_EXE_EVENT_ADD = ecore_event_type_new();
1401 ECORE_EXE_EVENT_DEL = ecore_event_type_new();
1402 ECORE_EXE_EVENT_DATA = ecore_event_type_new();
1403 ECORE_EXE_EVENT_ERROR = ecore_event_type_new();
1407 _ecore_exe_shutdown(void)
1410 ecore_exe_free(exes);
1414 _ecore_exe_find(pid_t pid)
1418 EINA_INLIST_FOREACH(exes, exe)
1420 if (exe->pid == pid)
1427 _ecore_exe_doomsday_clock_get(Ecore_Exe *exe)
1429 return exe->doomsday_clock;
1433 _ecore_exe_doomsday_clock_set(Ecore_Exe *exe, Ecore_Timer *dc)
1435 exe->doomsday_clock = dc;
1439 _ecore_exe_exec_it(const char *exe_cmd, Ecore_Exe_Flags flags)
1446 /* So what is this doing?
1448 * We are trying to avoid wrapping the exe call with /bin/sh -c.
1449 * We conservatively search for certain shell meta characters,
1450 * If we don't find them, we can call the exe directly.
1452 if (!strpbrk(exe_cmd, "|&;<>()$`\\\"'*?#"))
1455 char pre_command = 1;
1458 if (!(buf = strdup(exe_cmd)))
1461 token = strtok(buf, " \t\n\v");
1464 if (token[0] == '~')
1468 if (token[0] == '[')
1470 if (strchr(token, '='))
1476 token = strtok(NULL, " \t\n\v");
1479 if ((!token) && (num_tokens))
1483 if (!(buf = strdup(exe_cmd)))
1486 token = strtok(buf, " \t\n\v");
1488 if (!(args = (char **)calloc(num_tokens + 1, sizeof(char *))))
1493 for (i = 0; i < num_tokens; i++)
1497 token = strtok(NULL, " \t\n\v");
1499 args[num_tokens] = NULL;
1503 if (!(flags & ECORE_EXE_NOT_LEADER)) setsid();
1504 if ((flags & ECORE_EXE_USE_SH))
1507 execl("/bin/sh", "/bin/sh", "-c", exe_cmd, (char *)NULL);
1510 { /* We have to use a shell to run this. */
1512 { /* Find users preferred shell. */
1513 shell = getenv("SHELL");
1518 execl(shell, shell, "-c", exe_cmd, (char *)NULL);
1521 { /* We can run this directly. */
1526 ERR("arg[0] is NULL!");
1530 execvp(args[0], args);
1541 _ecore_exe_data_generic_handler(void *data, Ecore_Fd_Handler *fd_handler, Ecore_Exe_Flags flags)
1549 /* Sort out what sort of handler we are. */
1550 if (flags & ECORE_EXE_PIPE_READ)
1552 flags = ECORE_EXE_PIPE_READ;
1553 event_type = ECORE_EXE_EVENT_DATA;
1554 child_fd = exe->child_fd_read;
1558 flags = ECORE_EXE_PIPE_ERROR;
1559 event_type = ECORE_EXE_EVENT_ERROR;
1560 child_fd = exe->child_fd_error;
1564 && (ecore_main_fd_handler_active_get(fd_handler, ECORE_FD_READ)))
1566 unsigned char *inbuf;
1569 /* Get any left over data from last time. */
1570 if (flags & ECORE_EXE_PIPE_READ)
1572 inbuf = exe->read_data_buf;
1573 inbuf_num = exe->read_data_size;
1574 exe->read_data_buf = NULL;
1575 exe->read_data_size = 0;
1579 inbuf = exe->error_data_buf;
1580 inbuf_num = exe->error_data_size;
1581 exe->error_data_buf = NULL;
1582 exe->error_data_size = 0;
1588 char buf[READBUFSIZ];
1592 if ((num = read(child_fd, buf, READBUFSIZ)) < 1)
1593 /* FIXME: SPEED/SIZE TRADE OFF - add a smaller READBUFSIZE
1594 * (currently 64k) to inbuf, use that instead of buf, and
1595 * save ourselves a memcpy(). */
1597 lost_exe = ((errno == EIO) ||
1600 (errno == EINVAL) || (errno == ENOSPC));
1601 if ((errno != EAGAIN) && (errno != EINTR))
1602 perror("_ecore_exe_generic_handler() read problem ");
1605 { /* data got read. */
1606 inbuf = realloc(inbuf, inbuf_num + num);
1607 memcpy(inbuf + inbuf_num, buf, num);
1611 { /* No more data to read. */
1614 Ecore_Exe_Event_Data *e;
1616 /* Stash the data away for later. */
1617 if (flags & ECORE_EXE_PIPE_READ)
1619 exe->read_data_buf = inbuf;
1620 exe->read_data_size = inbuf_num;
1624 exe->error_data_buf = inbuf;
1625 exe->error_data_size = inbuf_num;
1628 if (!(exe->flags & ECORE_EXE_PIPE_AUTO))
1630 e = ecore_exe_event_data_get(exe, flags);
1631 if (e) /* Send the event. */
1632 ecore_event_add(event_type, e,
1633 _ecore_exe_event_exe_data_free,
1639 if (flags & ECORE_EXE_PIPE_READ)
1641 if (exe->read_data_size)
1642 INF("There are %d bytes left unsent from the dead exe %s.",
1643 exe->read_data_size, exe->cmd);
1647 if (exe->error_data_size)
1648 INF("There are %d bytes left unsent from the dead exe %s.",
1649 exe->error_data_size, exe->cmd);
1651 /* Thought about this a bit. If the exe has actually
1652 * died, this won't do any harm as it must have died
1653 * recently and the pid has not had a chance to recycle.
1654 * It is also a paranoid catchall, coz the usual ecore_signal
1655 * mechenism should kick in. But let's give it a good
1656 * kick in the head anyway.
1658 ecore_exe_terminate(exe);
1665 return ECORE_CALLBACK_RENEW;
1669 _ecore_exe_data_error_handler(void *data, Ecore_Fd_Handler *fd_handler)
1671 return _ecore_exe_data_generic_handler(data, fd_handler,
1672 ECORE_EXE_PIPE_ERROR);
1676 _ecore_exe_data_read_handler(void *data, Ecore_Fd_Handler *fd_handler)
1678 return _ecore_exe_data_generic_handler(data, fd_handler,
1679 ECORE_EXE_PIPE_READ);
1683 _ecore_exe_data_write_handler(void *data, Ecore_Fd_Handler *fd_handler __UNUSED__)
1688 if ((exe->write_fd_handler) &&
1689 (ecore_main_fd_handler_active_get
1690 (exe->write_fd_handler, ECORE_FD_WRITE)))
1691 _ecore_exe_flush(exe);
1693 /* If we have sent all there is to send, and we need to close the pipe, then close it. */
1694 if ((exe->close_stdin == 1)
1695 && (exe->write_data_size == exe->write_data_offset))
1700 INF("Closing stdin for %s", exe->cmd);
1701 /* if (exe->child_fd_write != -1) E_NO_ERRNO(result, fsync(exe->child_fd_write), ok); This a) doesn't work, and b) isn't needed. */
1702 IF_FN_DEL(ecore_main_fd_handler_del, exe->write_fd_handler);
1703 if (exe->child_fd_write != -1)
1704 E_NO_ERRNO(result, close(exe->child_fd_write), ok);
1705 exe->child_fd_write = -1;
1706 IF_FREE(exe->write_data_buf);
1709 return ECORE_CALLBACK_RENEW;
1713 _ecore_exe_flush(Ecore_Exe *exe)
1717 /* check whether we need to write anything at all. */
1718 if ((exe->child_fd_write == -1) || (!exe->write_data_buf))
1720 if (exe->write_data_size == exe->write_data_offset)
1723 count = write(exe->child_fd_write,
1724 (char *)exe->write_data_buf + exe->write_data_offset,
1725 exe->write_data_size - exe->write_data_offset);
1728 if (errno == EIO || errno == EBADF || errno == EPIPE || errno == EINVAL || errno == ENOSPC) /* we lost our exe! */
1730 ecore_exe_terminate(exe);
1731 if (exe->write_fd_handler)
1732 ecore_main_fd_handler_active_set(exe->write_fd_handler, 0);
1737 exe->write_data_offset += count;
1738 if (exe->write_data_offset >= exe->write_data_size)
1739 { /* Nothing left to write, clean up. */
1740 exe->write_data_size = 0;
1741 exe->write_data_offset = 0;
1742 IF_FREE(exe->write_data_buf);
1743 if (exe->write_fd_handler)
1744 ecore_main_fd_handler_active_set(exe->write_fd_handler, 0);
1750 _ecore_exe_event_exe_data_free(void *data __UNUSED__, void *ev)
1752 Ecore_Exe_Event_Data *e;
1755 ecore_exe_event_data_free(e);
1758 static Ecore_Exe_Event_Add *
1759 _ecore_exe_event_add_new(void)
1761 Ecore_Exe_Event_Add *e;
1763 e = calloc(1, sizeof(Ecore_Exe_Event_Add));
1768 _ecore_exe_event_add_free(void *data __UNUSED__, void *ev)
1770 Ecore_Exe_Event_Add *e;
1777 _ecore_exe_event_del_new(void)
1779 Ecore_Exe_Event_Del *e;
1781 e = calloc(1, sizeof(Ecore_Exe_Event_Del));
1786 _ecore_exe_event_del_free(void *data __UNUSED__, void *ev)
1788 Ecore_Exe_Event_Del *e;
1792 ecore_exe_free(e->exe);
1797 _ecore_exe_dead_attach(Ecore_Exe *exe)
1799 struct _ecore_exe_dead_exe *dead;
1801 if (exe->doomsday_clock_dead) return;
1802 dead = calloc(1, sizeof(struct _ecore_exe_dead_exe));
1805 dead->pid = exe->pid;
1806 dead->cmd = strdup(exe->cmd);
1807 IF_FN_DEL(ecore_timer_del, exe->doomsday_clock);
1808 exe->doomsday_clock =
1809 ecore_timer_add(10.0, _ecore_exe_make_sure_its_dead, dead);
1810 exe->doomsday_clock_dead = dead;