GNUnet  0.11.x
Data Structures | Functions
helper.c File Reference

API for dealing with (SUID) helper processes that communicate via GNUNET_MessageHeaders on stdin/stdout. More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_mst_lib.h"
Include dependency graph for helper.c:

Go to the source code of this file.

Data Structures

struct  GNUNET_HELPER_SendHandle
 Entry in the queue of messages we need to transmit to the helper. More...
 
struct  GNUNET_HELPER_Handle
 The handle to a helper process. More...
 

Functions

int GNUNET_HELPER_kill (struct GNUNET_HELPER_Handle *h, int soft_kill)
 Sends termination signal to the helper process. More...
 
int GNUNET_HELPER_wait (struct GNUNET_HELPER_Handle *h)
 Reap the helper process. More...
 
static void stop_helper (struct GNUNET_HELPER_Handle *h, int soft_kill)
 Stop the helper process, we're closing down or had an error. More...
 
static void restart_task (void *cls)
 Restart the helper process. More...
 
static void helper_read (void *cls)
 Read from the helper-process. More...
 
static void start_helper (struct GNUNET_HELPER_Handle *h)
 Start the helper process. More...
 
struct GNUNET_HELPER_HandleGNUNET_HELPER_start (int with_control_pipe, const char *binary_name, char *const binary_argv[], GNUNET_MessageTokenizerCallback cb, GNUNET_HELPER_ExceptionCallback exp_cb, void *cb_cls)
 Starts a helper and begins reading from it. More...
 
void GNUNET_HELPER_destroy (struct GNUNET_HELPER_Handle *h)
 Free's the resources occupied by the helper handle. More...
 
void GNUNET_HELPER_stop (struct GNUNET_HELPER_Handle *h, int soft_kill)
 Kills the helper, closes the pipe and frees the handle. More...
 
static void helper_write (void *cls)
 Write to the helper-process. More...
 
struct GNUNET_HELPER_SendHandleGNUNET_HELPER_send (struct GNUNET_HELPER_Handle *h, const struct GNUNET_MessageHeader *msg, int can_drop, GNUNET_HELPER_Continuation cont, void *cont_cls)
 Send an message to the helper. More...
 
void GNUNET_HELPER_send_cancel (struct GNUNET_HELPER_SendHandle *sh)
 Cancel a GNUNET_HELPER_send operation. More...
 

Detailed Description

API for dealing with (SUID) helper processes that communicate via GNUNET_MessageHeaders on stdin/stdout.

Author
Philipp Toelke
Christian Grothoff

Definition in file helper.c.

Function Documentation

◆ stop_helper()

static void stop_helper ( struct GNUNET_HELPER_Handle h,
int  soft_kill 
)
static

Stop the helper process, we're closing down or had an error.

Parameters
hhandle to the helper process
soft_killif GNUNET_YES, signals termination by closing the helper's stdin; GNUNET_NO to signal termination by sending SIGTERM to helper

Definition at line 281 of file helper.c.

References GNUNET_break, GNUNET_HELPER_kill(), GNUNET_HELPER_wait(), GNUNET_OK, GNUNET_SCHEDULER_cancel(), GNUNET_HELPER_Handle::restart_task, and restart_task().

Referenced by GNUNET_HELPER_stop(), helper_read(), helper_write(), and start_helper().

282 {
283  if (NULL != h->restart_task)
284  {
286  h->restart_task = NULL;
287  }
288  else
289  {
290  GNUNET_break (GNUNET_OK == GNUNET_HELPER_kill (h, soft_kill));
292  }
293 }
int GNUNET_HELPER_kill(struct GNUNET_HELPER_Handle *h, int soft_kill)
Sends termination signal to the helper process.
Definition: helper.c:177
struct GNUNET_SCHEDULER_Task * restart_task
Restart task.
Definition: helper.c:153
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
int GNUNET_HELPER_wait(struct GNUNET_HELPER_Handle *h)
Reap the helper process.
Definition: helper.c:225
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:966
Here is the call graph for this function:
Here is the caller graph for this function:

◆ restart_task()

static void restart_task ( void *  cls)
static

Restart the helper process.

Parameters
clshandle to the helper process

Definition at line 459 of file helper.c.

References GNUNET_ERROR_TYPE_INFO, GNUNET_log, GNUNET_HELPER_SendHandle::h, GNUNET_HELPER_Handle::restart_task, GNUNET_HELPER_Handle::retry_back_off, and start_helper().

Referenced by helper_read(), helper_write(), start_helper(), and stop_helper().

460 {
461  struct GNUNET_HELPER_Handle *h = cls;
462 
463  h->restart_task = NULL;
464  h->retry_back_off++;
466  "Restarting helper with back-off %u\n",
467  h->retry_back_off);
468  start_helper (h);
469 }
struct GNUNET_SCHEDULER_Task * restart_task
Restart task.
Definition: helper.c:153
The handle to a helper process.
Definition: helper.c:78
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
unsigned int retry_back_off
Count start attempts to increase linear back off.
Definition: helper.c:163
static void start_helper(struct GNUNET_HELPER_Handle *h)
Start the helper process.
Definition: helper.c:401
#define GNUNET_log(kind,...)
Here is the call graph for this function:
Here is the caller graph for this function:

◆ helper_read()

static void helper_read ( void *  cls)
static

Read from the helper-process.

Parameters
clshandle to the helper process

Definition at line 311 of file helper.c.

References _, GNUNET_HELPER_Handle::binary_name, buf, GNUNET_HELPER_Handle::cb_cls, GNUNET_HELPER_Handle::exp_cb, GNUNET_HELPER_Handle::fh_from_helper, GNUNET_ALIGN, GNUNET_DISK_file_read(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_HELPER_stop(), GNUNET_log, GNUNET_MAX_MESSAGE_SIZE, GNUNET_MST_from_buffer(), GNUNET_NO, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_add_read_file(), GNUNET_SYSERR, GNUNET_TIME_relative_multiply(), GNUNET_TIME_UNIT_FOREVER_REL, GNUNET_TIME_UNIT_SECONDS, GNUNET_HELPER_SendHandle::h, GNUNET_HELPER_Handle::mst, GNUNET_HELPER_Handle::read_task, GNUNET_HELPER_Handle::restart_task, restart_task(), GNUNET_HELPER_Handle::retry_back_off, stop_helper(), and t.

Referenced by start_helper().

312 {
313  struct GNUNET_HELPER_Handle *h = cls;
315  ssize_t t;
316 
317  h->read_task = NULL;
318  t = GNUNET_DISK_file_read (h->fh_from_helper, &buf, sizeof(buf));
319  if (t < 0)
320  {
321  /* On read-error, restart the helper */
323  _ ("Error reading from `%s': %s\n"),
324  h->binary_name,
325  strerror (errno));
326  if (NULL != h->exp_cb)
327  {
328  h->exp_cb (h->cb_cls);
330  return;
331  }
332  stop_helper (h, GNUNET_NO);
333  /* Restart the helper */
336  h->retry_back_off),
337  &restart_task,
338  h);
339  return;
340  }
341  if (0 == t)
342  {
343  /* this happens if the helper is shut down via a
344  signal, so it is not a "hard" error */
346  "Got 0 bytes from helper `%s' (EOF)\n",
347  h->binary_name);
348  if (NULL != h->exp_cb)
349  {
350  h->exp_cb (h->cb_cls);
352  return;
353  }
354  stop_helper (h, GNUNET_NO);
355  /* Restart the helper */
358  h->retry_back_off),
359  &restart_task,
360  h);
361  return;
362  }
364  "Got %u bytes from helper `%s'\n",
365  (unsigned int) t,
366  h->binary_name);
368  h->fh_from_helper,
369  &helper_read,
370  h);
371  if (GNUNET_SYSERR ==
373  {
375  _ ("Failed to parse inbound message from helper `%s'\n"),
376  h->binary_name);
377  if (NULL != h->exp_cb)
378  {
379  h->exp_cb (h->cb_cls);
381  return;
382  }
383  stop_helper (h, GNUNET_NO);
384  /* Restart the helper */
387  h->retry_back_off),
388  &restart_task,
389  h);
390  return;
391  }
392 }
static void restart_task(void *cls)
Restart the helper process.
Definition: helper.c:459
struct GNUNET_SCHEDULER_Task * restart_task
Restart task.
Definition: helper.c:153
ssize_t GNUNET_DISK_file_read(const struct GNUNET_DISK_FileHandle *h, void *result, size_t len)
Read the contents of a binary file into a buffer.
Definition: disk.c:732
The handle to a helper process.
Definition: helper.c:78
#define GNUNET_TIME_UNIT_SECONDS
One second.
void GNUNET_HELPER_stop(struct GNUNET_HELPER_Handle *h, int soft_kill)
Kills the helper, closes the pipe and frees the handle.
Definition: helper.c:565
#define GNUNET_NO
Definition: gnunet_common.h:78
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_file(struct GNUNET_TIME_Relative delay, const struct GNUNET_DISK_FileHandle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1636
static struct GNUNET_SCHEDULER_Task * t
Main task.
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
#define _(String)
GNU gettext support macro.
Definition: platform.h:181
struct GNUNET_SCHEDULER_Task * read_task
Task to read from the helper.
Definition: helper.c:143
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1253
unsigned int retry_back_off
Count start attempts to increase linear back off.
Definition: helper.c:163
static char buf[2048]
struct GNUNET_TIME_Relative GNUNET_TIME_relative_multiply(struct GNUNET_TIME_Relative rel, unsigned long long factor)
Multiply relative time by a given factor.
Definition: time.c:442
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
int GNUNET_MST_from_buffer(struct GNUNET_MessageStreamTokenizer *mst, const char *buf, size_t size, int purge, int one_shot)
Add incoming data to the receive buffer and call the callback for all complete messages.
Definition: mst.c:114
char * binary_name
Binary to run.
Definition: helper.c:133
GNUNET_HELPER_ExceptionCallback exp_cb
The exception callback.
Definition: helper.c:113
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
void * cb_cls
The closure for callbacks.
Definition: helper.c:118
struct GNUNET_MessageStreamTokenizer * mst
The Message-Tokenizer that tokenizes the messages comming from the helper.
Definition: helper.c:108
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
static void stop_helper(struct GNUNET_HELPER_Handle *h, int soft_kill)
Stop the helper process, we&#39;re closing down or had an error.
Definition: helper.c:281
#define GNUNET_ALIGN
gcc-ism to force alignment; we use this to align char-arrays that may then be cast to &#39;struct&#39;s...
#define GNUNET_log(kind,...)
static void helper_read(void *cls)
Read from the helper-process.
Definition: helper.c:311
const struct GNUNET_DISK_FileHandle * fh_from_helper
FileHandle to receive data from the helper.
Definition: helper.c:93
Here is the call graph for this function:
Here is the caller graph for this function:

◆ start_helper()

static void start_helper ( struct GNUNET_HELPER_Handle h)
static

Start the helper process.

Parameters
hhandle to the helper process

Definition at line 401 of file helper.c.

References GNUNET_HELPER_Handle::binary_argv, GNUNET_HELPER_Handle::binary_name, GNUNET_HELPER_Handle::fh_from_helper, GNUNET_HELPER_Handle::fh_to_helper, GNUNET_DISK_pipe(), GNUNET_DISK_pipe_close_end(), GNUNET_DISK_PIPE_END_READ, GNUNET_DISK_PIPE_END_WRITE, GNUNET_DISK_pipe_handle(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_NO, GNUNET_OS_INHERIT_STD_ERR, GNUNET_OS_start_process_vap(), GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_add_read_file(), GNUNET_TIME_relative_multiply(), GNUNET_TIME_UNIT_FOREVER_REL, GNUNET_TIME_UNIT_SECONDS, GNUNET_YES, GNUNET_HELPER_Handle::helper_in, GNUNET_HELPER_Handle::helper_out, GNUNET_HELPER_Handle::helper_proc, helper_read(), GNUNET_HELPER_Handle::mst, GNUNET_HELPER_Handle::read_task, GNUNET_HELPER_Handle::restart_task, restart_task(), GNUNET_HELPER_Handle::retry_back_off, stop_helper(), and GNUNET_HELPER_Handle::with_control_pipe.

Referenced by GNUNET_HELPER_start(), and restart_task().

402 {
403  h->helper_in =
405  h->helper_out =
407  if ((h->helper_in == NULL) || (h->helper_out == NULL))
408  {
409  /* out of file descriptors? try again later... */
410  stop_helper (h, GNUNET_NO);
413  h->retry_back_off),
414  &restart_task,
415  h);
416  return;
417  }
419  "Starting HELPER process `%s'\n",
420  h->binary_name);
421  h->fh_from_helper =
423  h->fh_to_helper =
427  h->helper_in,
428  h->helper_out,
429  NULL,
430  h->binary_name,
431  h->binary_argv);
432  if (NULL == h->helper_proc)
433  {
434  /* failed to start process? try again later... */
435  stop_helper (h, GNUNET_NO);
438  h->retry_back_off),
439  &restart_task,
440  h);
441  return;
442  }
445  if (NULL != h->mst)
447  h->fh_from_helper,
448  &helper_read,
449  h);
450 }
const struct GNUNET_DISK_FileHandle * fh_to_helper
FileHandle to send data to the helper.
Definition: helper.c:98
When this flag is set, the child process will inherit stderr of the parent.
Definition: gnunet_os_lib.h:91
static void restart_task(void *cls)
Restart the helper process.
Definition: helper.c:459
struct GNUNET_SCHEDULER_Task * restart_task
Restart task.
Definition: helper.c:153
struct GNUNET_DISK_PipeHandle * helper_out
PipeHandle to send data to the helper.
Definition: helper.c:88
#define GNUNET_TIME_UNIT_SECONDS
One second.
#define GNUNET_NO
Definition: gnunet_common.h:78
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_file(struct GNUNET_TIME_Relative delay, const struct GNUNET_DISK_FileHandle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1636
int with_control_pipe
Does the helper support the use of a control pipe for signalling?
Definition: helper.c:158
const struct GNUNET_DISK_FileHandle * GNUNET_DISK_pipe_handle(const struct GNUNET_DISK_PipeHandle *p, enum GNUNET_DISK_PipeEnd n)
Get the handle to a particular pipe end.
Definition: disk.c:1753
struct GNUNET_SCHEDULER_Task * read_task
Task to read from the helper.
Definition: helper.c:143
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1253
unsigned int retry_back_off
Count start attempts to increase linear back off.
Definition: helper.c:163
struct GNUNET_DISK_PipeHandle * helper_in
PipeHandle to receive data from the helper.
Definition: helper.c:83
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, struct GNUNET_DISK_PipeHandle *pipe_stderr, const char *filename, char *const argv[])
Start a process.
Definition: os_priority.c:607
struct GNUNET_TIME_Relative GNUNET_TIME_relative_multiply(struct GNUNET_TIME_Relative rel, unsigned long long factor)
Multiply relative time by a given factor.
Definition: time.c:442
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
The writing-end of a pipe.
The reading-end of a pipe.
struct GNUNET_DISK_PipeHandle * GNUNET_DISK_pipe(int blocking_read, int blocking_write, int inherit_read, int inherit_write)
Creates an interprocess channel.
Definition: disk.c:1526
char * binary_name
Binary to run.
Definition: helper.c:133
char ** binary_argv
NULL-terminated list of command-line arguments.
Definition: helper.c:138
struct GNUNET_MessageStreamTokenizer * mst
The Message-Tokenizer that tokenizes the messages comming from the helper.
Definition: helper.c:108
static void stop_helper(struct GNUNET_HELPER_Handle *h, int soft_kill)
Stop the helper process, we&#39;re closing down or had an error.
Definition: helper.c:281
int GNUNET_DISK_pipe_close_end(struct GNUNET_DISK_PipeHandle *p, enum GNUNET_DISK_PipeEnd end)
Closes one half of an interprocess channel.
Definition: disk.c:1643
struct GNUNET_OS_Process * helper_proc
The process id of the helper.
Definition: helper.c:103
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
static void helper_read(void *cls)
Read from the helper-process.
Definition: helper.c:311
const struct GNUNET_DISK_FileHandle * fh_from_helper
FileHandle to receive data from the helper.
Definition: helper.c:93
Here is the call graph for this function:
Here is the caller graph for this function:

◆ helper_write()

static void helper_write ( void *  cls)
static

Write to the helper-process.

Parameters
clshandle to the helper process

Definition at line 579 of file helper.c.

References _, GNUNET_HELPER_Handle::binary_name, buf, GNUNET_HELPER_Handle::cb_cls, GNUNET_HELPER_SendHandle::cont, GNUNET_HELPER_SendHandle::cont_cls, GNUNET_HELPER_Handle::exp_cb, GNUNET_HELPER_Handle::fh_to_helper, GNUNET_CONTAINER_DLL_remove, GNUNET_DISK_file_write(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_HELPER_stop(), GNUNET_log, GNUNET_NO, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_add_write_file(), GNUNET_TIME_relative_multiply(), GNUNET_TIME_UNIT_FOREVER_REL, GNUNET_TIME_UNIT_SECONDS, GNUNET_YES, GNUNET_HELPER_SendHandle::h, GNUNET_HELPER_SendHandle::msg, GNUNET_HELPER_Handle::restart_task, restart_task(), GNUNET_HELPER_Handle::retry_back_off, sh, GNUNET_HELPER_Handle::sh_head, GNUNET_HELPER_Handle::sh_tail, GNUNET_MessageHeader::size, stop_helper(), t, GNUNET_HELPER_SendHandle::wpos, and GNUNET_HELPER_Handle::write_task.

Referenced by GNUNET_HELPER_send().

580 {
581  struct GNUNET_HELPER_Handle *h = cls;
583  const char *buf;
584  ssize_t t;
585 
586  h->write_task = NULL;
587  if (NULL == (sh = h->sh_head))
588  {
589  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Helper write had no work!\n");
590  return; /* how did this happen? */
591  }
592  buf = (const char *) sh->msg;
594  &buf[sh->wpos],
595  ntohs (sh->msg->size) - sh->wpos);
596  if (-1 == t)
597  {
598  /* On write-error, restart the helper */
600  _ ("Error writing to `%s': %s\n"),
601  h->binary_name,
602  strerror (errno));
603  if (NULL != h->exp_cb)
604  {
605  h->exp_cb (h->cb_cls);
607  return;
608  }
610  "Stopping and restarting helper task!\n");
611  stop_helper (h, GNUNET_NO);
612  /* Restart the helper */
615  h->retry_back_off),
616  &restart_task,
617  h);
618  return;
619  }
621  "Transmitted %u bytes to %s\n",
622  (unsigned int) t,
623  h->binary_name);
624  sh->wpos += t;
625  if (sh->wpos == ntohs (sh->msg->size))
626  {
628  if (NULL != sh->cont)
629  sh->cont (sh->cont_cls, GNUNET_YES);
630  GNUNET_free (sh);
631  }
632  if (NULL != h->sh_head)
633  h->write_task =
635  h->fh_to_helper,
636  &helper_write,
637  h);
638 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
const struct GNUNET_DISK_FileHandle * fh_to_helper
FileHandle to send data to the helper.
Definition: helper.c:98
static void restart_task(void *cls)
Restart the helper process.
Definition: helper.c:459
struct GNUNET_SCHEDULER_Task * restart_task
Restart task.
Definition: helper.c:153
The handle to a helper process.
Definition: helper.c:78
unsigned int wpos
Current write position.
Definition: helper.c:71
#define GNUNET_TIME_UNIT_SECONDS
One second.
void GNUNET_HELPER_stop(struct GNUNET_HELPER_Handle *h, int soft_kill)
Kills the helper, closes the pipe and frees the handle.
Definition: helper.c:565
Entry in the queue of messages we need to transmit to the helper.
Definition: helper.c:36
#define GNUNET_NO
Definition: gnunet_common.h:78
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_write_file(struct GNUNET_TIME_Relative delay, const struct GNUNET_DISK_FileHandle *wfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1669
struct GNUNET_HELPER_SendHandle * sh_tail
Last message queued for transmission to helper.
Definition: helper.c:128
static struct GNUNET_SCHEDULER_Task * t
Main task.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
#define _(String)
GNU gettext support macro.
Definition: platform.h:181
struct GNUNET_SCHEDULER_Task * write_task
Task to read from the helper.
Definition: helper.c:148
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1253
unsigned int retry_back_off
Count start attempts to increase linear back off.
Definition: helper.c:163
ssize_t GNUNET_DISK_file_write(const struct GNUNET_DISK_FileHandle *h, const void *buffer, size_t n)
Write a buffer to a file.
Definition: disk.c:820
static struct SolverHandle * sh
static char buf[2048]
struct GNUNET_TIME_Relative GNUNET_TIME_relative_multiply(struct GNUNET_TIME_Relative rel, unsigned long long factor)
Multiply relative time by a given factor.
Definition: time.c:442
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
struct GNUNET_HELPER_SendHandle * sh_head
First message queued for transmission to helper.
Definition: helper.c:123
char * binary_name
Binary to run.
Definition: helper.c:133
GNUNET_HELPER_ExceptionCallback exp_cb
The exception callback.
Definition: helper.c:113
void * cb_cls
The closure for callbacks.
Definition: helper.c:118
static void stop_helper(struct GNUNET_HELPER_Handle *h, int soft_kill)
Stop the helper process, we&#39;re closing down or had an error.
Definition: helper.c:281
#define GNUNET_log(kind,...)
#define GNUNET_YES
Definition: gnunet_common.h:77
const struct GNUNET_MessageHeader * msg
Message to transmit (allocated at the end of this struct)
Definition: helper.c:51
GNUNET_HELPER_Continuation cont
Function to call upon completion.
Definition: helper.c:61
static void helper_write(void *cls)
Write to the helper-process.
Definition: helper.c:579
void * cont_cls
Closure to &#39;cont&#39;.
Definition: helper.c:66
#define GNUNET_free(ptr)
Wrapper around free.
Here is the call graph for this function:
Here is the caller graph for this function: