/*
This file is part of GNUnet
- (C) 2002, 2003, 2004, 2005, 2006, 2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2011 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
+ by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
*/
#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_os_lib.h"
-#include "gnunet_scheduler_lib.h"
-#include "gnunet_strings_lib.h"
-#include "gnunet_crypto_lib.h"
+#include "gnunet_util_lib.h"
#include "disk.h"
+#include <unistr.h>
#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
#define GNUNET_OS_CONTROL_PIPE "GNUNET_OS_CONTROL_PIPE"
+
struct GNUNET_OS_Process
{
/**
#endif
/**
- * Pipe we use to signal the process (if used).
+ * Pipe we use to signal the process.
+ * NULL if unused, or if process was deemed uncontrollable.
*/
struct GNUNET_DISK_FileHandle *control_pipe;
-
- /**
- * Name of the pipe, NULL for none.
- */
- char *childpipename;
};
*/
static struct GNUNET_OS_Process current_process;
-
-/* MinGW version of named pipe API */
-#ifdef MINGW
/**
- * Creates a named pipe/FIFO and opens it
- *
- * @param fn pointer to the name of the named pipe or to NULL
- * @param flags open flags
- * @param perm access permissions
- * @return pipe handle on success, NULL on error
+ * Handle for the #parent_control_handler() Task.
*/
-static struct GNUNET_DISK_FileHandle *
-npipe_create (char **fn, enum GNUNET_DISK_OpenFlags flags,
- enum GNUNET_DISK_AccessPermissions perm)
-{
- struct GNUNET_DISK_FileHandle *ret;
- HANDLE h = NULL;
- DWORD openMode;
- char *name;
-
- openMode = 0;
- if (flags & GNUNET_DISK_OPEN_READWRITE)
- openMode = PIPE_ACCESS_DUPLEX;
- else if (flags & GNUNET_DISK_OPEN_READ)
- openMode = PIPE_ACCESS_INBOUND;
- else if (flags & GNUNET_DISK_OPEN_WRITE)
- openMode = PIPE_ACCESS_OUTBOUND;
- if (flags & GNUNET_DISK_OPEN_FAILIFEXISTS)
- openMode |= FILE_FLAG_FIRST_PIPE_INSTANCE;
-
- while (h == NULL)
- {
- DWORD error_code;
-
- name = NULL;
- if (*fn != NULL)
- {
- GNUNET_asprintf (&name, "\\\\.\\pipe\\%.246s", fn);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to create an instance of named pipe `%s'\n", name);
- /* 1) This might work just fine with UTF-8 strings as it is.
- * 2) This is only used by GNUnet itself, and only with latin names.
- */
- h = CreateNamedPipe (name, openMode | FILE_FLAG_OVERLAPPED,
- PIPE_TYPE_BYTE | PIPE_READMODE_BYTE, 2, 1, 1, 0,
- NULL);
- }
- else
- {
- GNUNET_asprintf (fn, "\\\\.\\pipe\\gnunet-%llu",
- GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
- UINT64_MAX));
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Trying to create unique named pipe `%s'\n",
- *fn);
- h = CreateNamedPipe (*fn,
- openMode | FILE_FLAG_OVERLAPPED |
- FILE_FLAG_FIRST_PIPE_INSTANCE,
- PIPE_TYPE_BYTE | PIPE_READMODE_BYTE, 2, 1, 1, 0,
- NULL);
- }
- error_code = GetLastError ();
- if (name)
- GNUNET_free (name);
- /* don't re-set name to NULL yet */
- if (h == INVALID_HANDLE_VALUE)
- {
- SetErrnoFromWinError (error_code);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Pipe creation have failed because of %d, errno is %d\n", error_code,
- errno);
- if (name == NULL)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Pipe was to be unique, considering re-creation\n");
- GNUNET_free (*fn);
- *fn = NULL;
- if (error_code != ERROR_ACCESS_DENIED && error_code != ERROR_PIPE_BUSY)
- {
- return NULL;
- }
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Pipe name was not unique, trying again\n");
- h = NULL;
- }
- else
- return NULL;
- }
- }
- errno = 0;
-
- ret = GNUNET_malloc (sizeof (*ret));
- ret->h = h;
- ret->type = GNUNET_PIPE;
- ret->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
- ret->oOverlapWrite->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
- return ret;
-}
-
+static struct GNUNET_SCHEDULER_Task *pch;
/**
- * Opens already existing named pipe/FIFO
- *
- * @param fn name of an existing named pipe
- * @param flags open flags
- * @return pipe handle on success, NULL on error
+ * Handle for the #shutdown_pch() Task.
*/
-static struct GNUNET_DISK_FileHandle *
-npipe_open (const char *fn, enum GNUNET_DISK_OpenFlags flags)
-{
- struct GNUNET_DISK_FileHandle *ret;
- HANDLE h;
- DWORD openMode;
-
- openMode = 0;
- if (flags & GNUNET_DISK_OPEN_READWRITE)
- openMode = GENERIC_WRITE | GENERIC_READ;
- else if (flags & GNUNET_DISK_OPEN_READ)
- openMode = GENERIC_READ;
- else if (flags & GNUNET_DISK_OPEN_WRITE)
- openMode = GENERIC_WRITE;
-
- h = CreateFile (fn, openMode, 0, NULL, OPEN_EXISTING,
- FILE_FLAG_OVERLAPPED | FILE_READ_ATTRIBUTES, NULL);
- if (h == INVALID_HANDLE_VALUE)
- {
- SetErrnoFromWinError (GetLastError ());
- return NULL;
- }
-
- ret = GNUNET_malloc (sizeof (*ret));
- ret->h = h;
- ret->type = GNUNET_PIPE;
- ret->oOverlapRead = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapWrite = GNUNET_malloc (sizeof (OVERLAPPED));
- ret->oOverlapRead->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
- ret->oOverlapWrite->hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
-
- return ret;
-}
+static struct GNUNET_SCHEDULER_Task *spch;
-#else
-/* UNIX version of named-pipe API */
/**
- * Clean up a named pipe and the directory it was placed in.
+ * This handler is called on shutdown to remove the #pch.
*
- * @param fn name of the pipe
+ * @param cls the `struct GNUNET_DISK_FileHandle` of the control pipe
*/
static void
-cleanup_npipe (const char *fn)
-{
- char *dn;
- char *dp;
-
- if (0 != unlink (fn))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
- dn = GNUNET_strdup (fn);
- dp = dirname (dn);
- if (0 != rmdir (dp))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "rmdir", dp);
- GNUNET_free (dn);
-}
-
-
-/**
- * Setup a named pipe.
- *
- * @param fn where to store the name of the new pipe,
- * if *fn is non-null, the name of the pipe to setup
- * @return GNUNET_OK on success
- */
-static int
-npipe_setup (char **fn)
-{
- if (NULL == *fn)
- {
- /* FIXME: hardwired '/tmp' path... is bad */
- char dir[] = "/tmp/gnunet-pipe-XXXXXX";
-
- if (NULL == mkdtemp (dir))
- {
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "mkdtemp");
- return GNUNET_SYSERR;
- }
- GNUNET_asprintf (fn, "%s/child-control", dir);
- }
- if (-1 == mkfifo (*fn, S_IRUSR | S_IWUSR))
- return GNUNET_SYSERR;
- return GNUNET_OK;
-}
-
-
-/**
- * Open an existing named pipe.
- *
- * @param fn name of the file
- * @param flags flags to use
- * @return NULL on error
- */
-static struct GNUNET_DISK_FileHandle *
-npipe_open (const char *fn,
- enum GNUNET_DISK_OpenFlags flags)
+shutdown_pch (void *cls)
{
- struct GNUNET_DISK_FileHandle *ret;
- int fd;
- struct timespec req;
- int i;
+ struct GNUNET_DISK_FileHandle *control_pipe = cls;
- /* 200 * 5ms = 1s at most */
- for (i=0;i<200;i++)
- {
- fd = open (fn, O_NONBLOCK | ((flags == GNUNET_DISK_OPEN_READ) ? O_RDONLY : O_WRONLY));
- if ( (-1 != fd) || (9 == i) || (flags == GNUNET_DISK_OPEN_READ))
- break;
- /* as this is for killing a child process via pipe and it is conceivable that
- the child process simply didn't finish starting yet, we do some sleeping
- (which is obviously usually not allowed). We can't select on the FD as
- 'open' fails, and we probably shouldn't just "ignore" the error, so wait
- and retry a few times is likely the best method; our process API doesn't
- support continuations, so we need to sleep directly... */
- req.tv_sec = 0;
- req.tv_nsec = 5000000; /* 5ms */
- (void) nanosleep (&req, NULL);
- }
- if (-1 == fd)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- (flags == GNUNET_DISK_OPEN_READ)
- ? _("Failed to open named pipe `%s' for reading: %s\n")
- : _("Failed to open named pipe `%s' for writing: %s\n"),
- fn,
- STRERROR (errno));
- return NULL;
- }
- ret = GNUNET_malloc (sizeof (struct GNUNET_DISK_FileHandle));
- ret->fd = fd;
- return ret;
+ GNUNET_SCHEDULER_cancel (pch);
+ pch = NULL;
+ GNUNET_DISK_file_close (control_pipe);
+ control_pipe = NULL;
}
-#endif
/**
* This handler is called when there are control data to be read on the pipe
*
- * @param cls the 'struct GNUNET_DISK_FileHandle' of the control pipe
- * @param tc scheduler context
+ * @param cls the `struct GNUNET_DISK_FileHandle` of the control pipe
*/
static void
-parent_control_handler (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+parent_control_handler (void *cls)
{
struct GNUNET_DISK_FileHandle *control_pipe = cls;
char sig;
+ char *pipe_fd;
ssize_t ret;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, "`%s' invoked because of %d\n", __FUNCTION__,
- tc->reason);
- if (tc->reason &
- (GNUNET_SCHEDULER_REASON_SHUTDOWN | GNUNET_SCHEDULER_REASON_TIMEOUT |
- GNUNET_SCHEDULER_REASON_PREREQ_DONE))
- {
- GNUNET_DISK_file_close (control_pipe);
- return;
- }
- ret = GNUNET_DISK_file_read (control_pipe, &sig, sizeof (sig));
+
+ pch = NULL;
+ ret = GNUNET_DISK_file_read (control_pipe,
+ &sig,
+ sizeof (sig));
if (sizeof (sig) != ret)
{
if (-1 == ret)
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "GNUNET_DISK_file_read");
+ LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR,
+ "GNUNET_DISK_file_read");
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Closing control pipe\n");
GNUNET_DISK_file_close (control_pipe);
+ control_pipe = NULL;
+ GNUNET_SCHEDULER_cancel (spch);
+ spch = NULL;
return;
}
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Got control code %d from parent\n", sig);
- GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
- control_pipe, &parent_control_handler,
- control_pipe);
- raise ((int) sig);
+ pipe_fd = getenv (GNUNET_OS_CONTROL_PIPE);
+ GNUNET_assert ( (NULL == pipe_fd) ||
+ (strlen (pipe_fd) <= 0) );
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Got control code %d from parent via pipe %s\n",
+ sig,
+ pipe_fd);
+ pch = GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ control_pipe,
+ &parent_control_handler,
+ control_pipe);
+ GNUNET_SIGNAL_raise ((int) sig);
}
/**
* Task that connects this process to its parent via pipe;
* essentially, the parent control handler will read signal numbers
- * from the 'GNUNET_OS_CONTROL_PIPE' (as given in an environment
+ * from the #GNUNET_OS_CONTROL_PIPE (as given in an environment
* variable) and raise those signals.
*
* @param cls closure (unused)
- * @param tc scheduler context (unused)
*/
void
-GNUNET_OS_install_parent_control_handler (void *cls,
- const struct
- GNUNET_SCHEDULER_TaskContext *tc)
+GNUNET_OS_install_parent_control_handler (void *cls)
{
const char *env_buf;
+ char *env_buf_end;
struct GNUNET_DISK_FileHandle *control_pipe;
+ uint64_t pipe_fd;
+ if (NULL != pch)
+ {
+ /* already done, we've been called twice... */
+ GNUNET_break (0);
+ return;
+ }
env_buf = getenv (GNUNET_OS_CONTROL_PIPE);
- if ( (env_buf == NULL) || (strlen (env_buf) <= 0) )
+ if ( (NULL == env_buf) || (strlen (env_buf) <= 0) )
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Not installing a handler because $%s is empty\n",
GNUNET_OS_CONTROL_PIPE);
- putenv ("GNUNET_OS_CONTROL_PIPE=");
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
+ return;
+ }
+ errno = 0;
+ pipe_fd = strtoull (env_buf, &env_buf_end, 16);
+ if ((0 != errno) || (env_buf == env_buf_end))
+ {
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING,
+ "strtoull",
+ env_buf);
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
+ return;
+ }
+#if !defined (WINDOWS)
+ if (pipe_fd >= FD_SETSIZE)
+#else
+ if ((FILE_TYPE_UNKNOWN == GetFileType ((HANDLE) (uintptr_t) pipe_fd))
+ && (0 != GetLastError ()))
+#endif
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "GNUNET_OS_CONTROL_PIPE `%s' contains garbage?\n",
+ env_buf);
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
return;
}
- control_pipe =
- npipe_open (env_buf, GNUNET_DISK_OPEN_READ);
+#if WINDOWS
+ control_pipe = GNUNET_DISK_get_handle_from_w32_handle ((HANDLE) (uintptr_t) pipe_fd);
+#else
+ control_pipe = GNUNET_DISK_get_handle_from_int_fd ((int) pipe_fd);
+#endif
if (NULL == control_pipe)
{
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING, "open", env_buf);
- putenv ("GNUNET_OS_CONTROL_PIPE=");
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING,
+ "open",
+ env_buf);
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
return;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Adding parent control handler pipe `%s' to the scheduler\n", env_buf);
- GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL, control_pipe,
- &parent_control_handler, control_pipe);
- putenv ("GNUNET_OS_CONTROL_PIPE=");
+ "Adding parent control handler pipe `%s' to the scheduler\n",
+ env_buf);
+ pch = GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ control_pipe,
+ &parent_control_handler,
+ control_pipe);
+ spch = GNUNET_SCHEDULER_add_shutdown (&shutdown_pch,
+ control_pipe);
+ putenv (GNUNET_OS_CONTROL_PIPE "=");
}
/**
* Get process structure for current process
*
- * The pointer it returns points to static memory location and must not be
- * deallocated/closed
+ * The pointer it returns points to static memory location and must
+ * not be deallocated/closed.
*
* @return pointer to the process sturcutre for this process
*/
* @return 0 on success, -1 on error
*/
int
-GNUNET_OS_process_kill (struct GNUNET_OS_Process *proc, int sig)
+GNUNET_OS_process_kill (struct GNUNET_OS_Process *proc,
+ int sig)
{
int ret;
char csig;
csig = (char) sig;
-#if !WINDOWS
- if ( (NULL == proc->control_pipe) &&
- (NULL != proc->childpipename) )
- proc->control_pipe = npipe_open (proc->childpipename,
- GNUNET_DISK_OPEN_WRITE);
-#endif
if (NULL != proc->control_pipe)
{
- ret = GNUNET_DISK_file_write (proc->control_pipe, &csig, sizeof (csig));
- if (ret == sizeof (csig))
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending signal %d to pid: %u via pipe\n",
+ sig,
+ proc->pid);
+ ret = GNUNET_DISK_file_write (proc->control_pipe,
+ &csig,
+ sizeof (csig));
+ if (sizeof (csig) == ret)
return 0;
}
/* pipe failed or non-existent, try other methods */
switch (sig)
{
-#if !WINDOWS
+#if !defined (WINDOWS)
case SIGHUP:
#endif
case SIGINT:
case SIGKILL:
case SIGTERM:
-#if WINDOWS && !defined(__CYGWIN__)
- if (0 == TerminateProcess (proc->handle, 0))
+#if (SIGTERM != GNUNET_TERM_SIG)
+ case GNUNET_TERM_SIG:
+#endif
+#if defined(WINDOWS) && !defined(__CYGWIN__)
{
- /* FIXME: set 'errno' */
- return -1;
+ DWORD exitcode;
+ int must_kill = GNUNET_YES;
+ if (0 != GetExitCodeProcess (proc->handle, &exitcode))
+ must_kill = (exitcode == STILL_ACTIVE) ? GNUNET_YES : GNUNET_NO;
+ if (GNUNET_YES == must_kill)
+ {
+ if (0 == SafeTerminateProcess (proc->handle, 0, 0))
+ {
+ DWORD error_code = GetLastError ();
+ if ( (error_code != WAIT_TIMEOUT) &&
+ (error_code != ERROR_PROCESS_ABORTED) )
+ {
+ LOG ((error_code == ERROR_ACCESS_DENIED) ?
+ GNUNET_ERROR_TYPE_INFO : GNUNET_ERROR_TYPE_WARNING,
+ "SafeTermiateProcess failed with code %lu\n",
+ error_code);
+ /* The problem here is that a process that is already dying
+ * might cause SafeTerminateProcess to fail with
+ * ERROR_ACCESS_DENIED, but the process WILL die eventually.
+ * If we really had a permissions problem, hanging up (which
+ * is what will happen in process_wait() in that case) is
+ * a valid option.
+ */
+ if (ERROR_ACCESS_DENIED == error_code)
+ {
+ errno = 0;
+ }
+ else
+ {
+ SetErrnoFromWinError (error_code);
+ return -1;
+ }
+ }
+ }
+ }
}
return 0;
#else
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending signal %d to pid: %u via system call\n",
+ sig,
+ proc->pid);
return PLIBC_KILL (proc->pid, sig);
#endif
default:
-#if WINDOWS
+#if defined (WINDOWS)
errno = EINVAL;
return -1;
#else
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending signal %d to pid: %u via system call\n",
+ sig,
+ proc->pid);
return PLIBC_KILL (proc->pid, sig);
-#endif
+#endif
}
}
+
/**
* Get the pid of the process in question
*
}
+/**
+ * Cleans up process structure contents (OS-dependent) and deallocates
+ * it.
+ *
+ * @param proc pointer to process structure
+ */
void
-GNUNET_OS_process_close (struct GNUNET_OS_Process *proc)
+GNUNET_OS_process_destroy (struct GNUNET_OS_Process *proc)
{
if (NULL != proc->control_pipe)
GNUNET_DISK_file_close (proc->control_pipe);
-// FIXME NILS
-#ifdef WINDOWS
- if (proc->handle != NULL)
+#if defined (WINDOWS)
+ if (NULL != proc->handle)
CloseHandle (proc->handle);
#endif
- if (NULL != proc->childpipename)
- {
-#if !WINDOWS
- cleanup_npipe (proc->childpipename);
-#endif
- GNUNET_free (proc->childpipename);
- }
GNUNET_free (proc);
}
-// FIXME NILS
+
#if WINDOWS
#include "gnunet_signal_lib.h"
*/
#define DWORD_WINAPI DWORD WINAPI
+
/**
* @brief Waits for a process to terminate and invokes the SIGCHLD handler
* @param proc pointer to process structure
}
#endif
-/**
- * Set process priority
- *
- * @param proc pointer to process structure
- * @param prio priority value
- * @return GNUNET_OK on success, GNUNET_SYSERR on error
- */
-int
-GNUNET_OS_set_process_priority (struct GNUNET_OS_Process *proc,
- enum GNUNET_SCHEDULER_Priority prio)
-{
- int rprio;
-
- GNUNET_assert (prio < GNUNET_SCHEDULER_PRIORITY_COUNT);
- if (prio == GNUNET_SCHEDULER_PRIORITY_KEEP)
- return GNUNET_OK;
-
- /* convert to MINGW/Unix values */
- switch (prio)
- {
- case GNUNET_SCHEDULER_PRIORITY_UI:
- case GNUNET_SCHEDULER_PRIORITY_URGENT:
-#ifdef MINGW
- rprio = HIGH_PRIORITY_CLASS;
-#else
- rprio = 0;
-#endif
- break;
-
- case GNUNET_SCHEDULER_PRIORITY_HIGH:
-#ifdef MINGW
- rprio = ABOVE_NORMAL_PRIORITY_CLASS;
-#else
- rprio = 5;
-#endif
- break;
-
- case GNUNET_SCHEDULER_PRIORITY_DEFAULT:
-#ifdef MINGW
- rprio = NORMAL_PRIORITY_CLASS;
-#else
- rprio = 7;
-#endif
- break;
-
- case GNUNET_SCHEDULER_PRIORITY_BACKGROUND:
-#ifdef MINGW
- rprio = BELOW_NORMAL_PRIORITY_CLASS;
-#else
- rprio = 10;
-#endif
- break;
-
- case GNUNET_SCHEDULER_PRIORITY_IDLE:
-#ifdef MINGW
- rprio = IDLE_PRIORITY_CLASS;
-#else
- rprio = 19;
-#endif
- break;
- default:
- GNUNET_assert (0);
- return GNUNET_SYSERR;
- }
-
- /* Set process priority */
-#ifdef MINGW
- {
- HANDLE h = proc->handle;
-
- GNUNET_assert (h != NULL);
- SetPriorityClass (h, rprio);
- }
-#elif LINUX
- pid_t pid;
-
- pid = proc->pid;
- if ((0 == pid) || (pid == getpid ()))
- {
- int have = nice (0);
- int delta = rprio - have;
-
- errno = 0;
- if ((delta != 0) && (rprio == nice (delta)) && (errno != 0))
- {
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK, "nice");
- return GNUNET_SYSERR;
- }
- }
- else
- {
- if (0 != setpriority (PRIO_PROCESS, pid, rprio))
- {
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
- "setpriority");
- return GNUNET_SYSERR;
- }
- }
-#else
- LOG (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
- "Priority management not availabe for this platform\n");
-#endif
- return GNUNET_OK;
-}
#if MINGW
static char *
CreateCustomEnvTable (char **vars)
{
- char *win32_env_table, *ptr, **var_ptr, *result, *result_ptr;
+ char *win32_env_table;
+ char *ptr;
+ char **var_ptr;
+ char *result;
+ char *result_ptr;
size_t tablesize = 0;
size_t items_count = 0;
- size_t n_found = 0, n_var;
+ size_t n_found = 0;
+ size_t n_var;
char *index = NULL;
size_t c;
size_t var_len;
char *val;
win32_env_table = GetEnvironmentStringsA ();
- if (win32_env_table == NULL)
+ if (NULL == win32_env_table)
return NULL;
for (c = 0, var_ptr = vars; *var_ptr; var_ptr += 2, c++) ;
n_var = c;
*result_ptr = 0;
return result;
}
+
+#else
+
+/**
+ * Open '/dev/null' and make the result the given
+ * file descriptor.
+ *
+ * @param target_fd desired FD to point to /dev/null
+ * @param flags open flags (O_RDONLY, O_WRONLY)
+ */
+static void
+open_dev_null (int target_fd,
+ int flags)
+{
+ int fd;
+
+ fd = open ("/dev/null", flags);
+ if (-1 == fd)
+ {
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
+ "open",
+ "/dev/null");
+ return;
+ }
+ if (fd == target_fd)
+ return;
+ if (-1 == dup2 (fd, target_fd))
+ {
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "dup2");
+ (void) close (fd);
+ return;
+ }
+ GNUNET_break (0 == close (fd));
+}
#endif
* Start a process.
*
* @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags controlling which
+ * std handles of the parent are inherited by the child.
+ * pipe_stdin and pipe_stdout take priority over std_inheritance
+ * (when they are non-NULL).
* @param pipe_stdin pipe to use to send input to child process (or NULL)
* @param pipe_stdout pipe to use to get output from child process (or NULL)
+ * @param pipe_stderr pipe to use for stderr for child process (or NULL)
+ * @param lsocks array of listen sockets to dup systemd-style (or NULL);
+ * must be NULL on platforms where dup is not supported
* @param filename name of the binary
- * @param argv NULL-terminated array of arguments to the process
- * @return pointer to process structure of the new process, NULL on error
+ * @param argv NULL-terminated list of arguments to the process
+ * @return process ID of the new process, -1 on error
*/
-struct GNUNET_OS_Process *
-GNUNET_OS_start_process_vap (int pipe_control,
- struct GNUNET_DISK_PipeHandle *pipe_stdin,
- struct GNUNET_DISK_PipeHandle *pipe_stdout,
- const char *filename,
- char *const argv[])
+static struct GNUNET_OS_Process *
+start_process (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ struct GNUNET_DISK_PipeHandle *pipe_stdin,
+ struct GNUNET_DISK_PipeHandle *pipe_stdout,
+ struct GNUNET_DISK_PipeHandle *pipe_stderr,
+ const SOCKTYPE *lsocks,
+ const char *filename,
+ char *const argv[])
{
#ifndef MINGW
- char *childpipename = NULL;
- struct GNUNET_OS_Process *gnunet_proc = NULL;
pid_t ret;
+ char fds[16];
+ struct GNUNET_OS_Process *gnunet_proc;
+ struct GNUNET_DISK_FileHandle *childpipe_read;
+ struct GNUNET_DISK_FileHandle *childpipe_write;
+ int childpipe_read_fd;
+ int i;
+ int j;
+ int k;
+ int tgt;
+ int flags;
+ int *lscp;
+ unsigned int ls;
int fd_stdout_write;
int fd_stdout_read;
+ int fd_stderr_write;
+ int fd_stderr_read;
int fd_stdin_read;
int fd_stdin_write;
- if ( (GNUNET_YES == pipe_control) &&
- (GNUNET_OK !=
- npipe_setup (&childpipename)) )
- return NULL;
- if (pipe_stdout != NULL)
+ if (GNUNET_SYSERR ==
+ GNUNET_OS_check_helper_binary (filename, GNUNET_NO, NULL))
+ return NULL; /* not executable */
+ if (GNUNET_YES == pipe_control)
+ {
+ struct GNUNET_DISK_PipeHandle *childpipe;
+ int dup_childpipe_read_fd = -1;
+
+ childpipe = GNUNET_DISK_pipe (GNUNET_NO, GNUNET_NO,
+ GNUNET_YES, GNUNET_NO);
+ if (NULL == childpipe)
+ return NULL;
+ childpipe_read = GNUNET_DISK_pipe_detach_end (childpipe,
+ GNUNET_DISK_PIPE_END_READ);
+ childpipe_write = GNUNET_DISK_pipe_detach_end (childpipe,
+ GNUNET_DISK_PIPE_END_WRITE);
+ GNUNET_DISK_pipe_close (childpipe);
+ if ( (NULL == childpipe_read) ||
+ (NULL == childpipe_write) ||
+ (GNUNET_OK !=
+ GNUNET_DISK_internal_file_handle_ (childpipe_read,
+ &childpipe_read_fd,
+ sizeof (int))) ||
+ (-1 == (dup_childpipe_read_fd = dup (childpipe_read_fd))))
+ {
+ if (NULL != childpipe_read)
+ GNUNET_DISK_file_close (childpipe_read);
+ if (NULL != childpipe_write)
+ GNUNET_DISK_file_close (childpipe_write);
+ if (0 <= dup_childpipe_read_fd)
+ close (dup_childpipe_read_fd);
+ return NULL;
+ }
+ childpipe_read_fd = dup_childpipe_read_fd;
+ GNUNET_DISK_file_close (childpipe_read);
+ }
+ else
+ {
+ childpipe_write = NULL;
+ childpipe_read_fd = -1;
+ }
+ if (NULL != pipe_stdin)
+ {
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
+ &fd_stdin_read, sizeof (int)));
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdin, GNUNET_DISK_PIPE_END_WRITE),
+ &fd_stdin_write, sizeof (int)));
+ }
+ if (NULL != pipe_stdout)
{
GNUNET_assert (GNUNET_OK ==
GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
(pipe_stdout, GNUNET_DISK_PIPE_END_READ),
&fd_stdout_read, sizeof (int)));
}
- if (pipe_stdin != NULL)
+ if (NULL != pipe_stderr)
{
GNUNET_assert (GNUNET_OK ==
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
- &fd_stdin_read, sizeof (int)));
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stderr,
+ GNUNET_DISK_PIPE_END_READ),
+ &fd_stderr_read, sizeof (int)));
GNUNET_assert (GNUNET_OK ==
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdin, GNUNET_DISK_PIPE_END_WRITE),
- &fd_stdin_write, sizeof (int)));
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stderr,
+ GNUNET_DISK_PIPE_END_WRITE),
+ &fd_stderr_write, sizeof (int)));
}
-
+ lscp = NULL;
+ ls = 0;
+ if (NULL != lsocks)
+ {
+ i = 0;
+ while (-1 != (k = lsocks[i++]))
+ GNUNET_array_append (lscp, ls, k);
+ GNUNET_array_append (lscp, ls, -1);
+ }
+#if DARWIN
+ /* see https://gnunet.org/vfork */
+ ret = vfork ();
+#else
ret = fork ();
+#endif
if (-1 == ret)
{
+ int eno = errno;
LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "fork");
- GNUNET_free_non_null (childpipename);
+ GNUNET_array_grow (lscp, ls, 0);
+ if (NULL != childpipe_write)
+ GNUNET_DISK_file_close (childpipe_write);
+ if (0 <= childpipe_read_fd)
+ close (childpipe_read_fd);
+ errno = eno;
return NULL;
}
if (0 != ret)
{
- gnunet_proc = GNUNET_malloc (sizeof (struct GNUNET_OS_Process));
+ unsetenv (GNUNET_OS_CONTROL_PIPE);
+ gnunet_proc = GNUNET_new (struct GNUNET_OS_Process);
gnunet_proc->pid = ret;
- gnunet_proc->childpipename = childpipename;
+ gnunet_proc->control_pipe = childpipe_write;
+ if (GNUNET_YES == pipe_control)
+ {
+ close (childpipe_read_fd);
+ }
+ GNUNET_array_grow (lscp, ls, 0);
return gnunet_proc;
}
- if (NULL != childpipename)
+ if (0 <= childpipe_read_fd)
+ {
+ char fdbuf[100];
+#ifndef DARWIN
+ /* due to vfork, we must NOT free memory on DARWIN! */
+ GNUNET_DISK_file_close (childpipe_write);
+#endif
+ snprintf (fdbuf, 100, "%x", childpipe_read_fd);
+ setenv (GNUNET_OS_CONTROL_PIPE, fdbuf, 1);
+ }
+ else
+ unsetenv (GNUNET_OS_CONTROL_PIPE);
+ if (NULL != pipe_stdin)
+ {
+ GNUNET_break (0 == close (fd_stdin_write));
+ if (-1 == dup2 (fd_stdin_read, 0))
+ LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
+ GNUNET_break (0 == close (fd_stdin_read));
+ }
+ else if (0 == (std_inheritance & GNUNET_OS_INHERIT_STD_IN))
{
- setenv (GNUNET_OS_CONTROL_PIPE, childpipename, 1);
- GNUNET_free (childpipename);
+ GNUNET_break (0 == close (0));
+ open_dev_null (0, O_RDONLY);
}
- if (pipe_stdout != NULL)
+ if (NULL != pipe_stdout)
{
GNUNET_break (0 == close (fd_stdout_read));
if (-1 == dup2 (fd_stdout_write, 1))
LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
GNUNET_break (0 == close (fd_stdout_write));
}
-
- if (pipe_stdin != NULL)
+ else if (0 == (std_inheritance & GNUNET_OS_INHERIT_STD_OUT))
{
-
- GNUNET_break (0 == close (fd_stdin_write));
- if (-1 == dup2 (fd_stdin_read, 0))
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
- GNUNET_break (0 == close (fd_stdin_read));
- }
- execvp (filename, argv);
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "execvp", filename);
- _exit (1);
-#else
- char *childpipename = NULL;
- struct GNUNET_OS_Process *gnunet_proc = NULL;
- char *arg;
- unsigned int cmdlen;
- char *cmd, *idx;
- STARTUPINFOW start;
- PROCESS_INFORMATION proc;
- int argc, arg_count;
- HANDLE stdin_handle;
- HANDLE stdout_handle;
- struct GNUNET_DISK_FileHandle *control_pipe;
-
- char path[MAX_PATH + 1];
-
- char *our_env[3] = { NULL, NULL, NULL };
- char *env_block = NULL;
- char *pathbuf;
- DWORD pathbuf_len, alloc_len;
- char *self_prefix;
- char *bindir;
- char *libdir;
- char *ptr;
- char *non_const_filename;
- wchar_t wpath[MAX_PATH + 1], wcmd[32768];
-
- /* Search in prefix dir (hopefully - the directory from which
- * the current module was loaded), bindir and libdir, then in PATH
- */
- self_prefix = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_SELF_PREFIX);
- bindir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_BINDIR);
- libdir = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_LIBDIR);
-
- pathbuf_len = GetEnvironmentVariableA ("PATH", (char *) &pathbuf, 0);
-
- alloc_len =
- pathbuf_len + 1 + strlen (self_prefix) + 1 + strlen (bindir) + 1 +
- strlen (libdir);
-
- pathbuf = GNUNET_malloc (alloc_len * sizeof (char));
-
- ptr = pathbuf;
- ptr += sprintf (pathbuf, "%s;%s;%s;", self_prefix, bindir, libdir);
- GNUNET_free (self_prefix);
- GNUNET_free (bindir);
- GNUNET_free (libdir);
-
- alloc_len = GetEnvironmentVariableA ("PATH", ptr, pathbuf_len);
- GNUNET_assert (alloc_len == (pathbuf_len - 1));
-
- cmdlen = strlen (filename);
- if (cmdlen < 5 || strcmp (&filename[cmdlen - 4], ".exe") != 0)
- GNUNET_asprintf (&non_const_filename, "%s.exe", filename);
- else
- GNUNET_asprintf (&non_const_filename, "%s", filename);
-
- /* Check that this is the full path. If it isn't, search. */
- if (non_const_filename[1] == ':')
- snprintf (path, sizeof (path) / sizeof (char), "%s", non_const_filename);
- else if (!SearchPathA
- (pathbuf, non_const_filename, NULL, sizeof (path) / sizeof (char),
- path, NULL))
- {
- SetErrnoFromWinError (GetLastError ());
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "SearchPath",
- non_const_filename);
- GNUNET_free (non_const_filename);
- GNUNET_free (pathbuf);
- return NULL;
- }
- GNUNET_free (pathbuf);
- GNUNET_free (non_const_filename);
-
- cmdlen = 0;
- argc = 0;
- while (NULL != (arg = argv[argc++]))
- {
- if (cmdlen == 0)
- cmdlen = cmdlen + strlen (path) + 4;
- else
- cmdlen = cmdlen + strlen (arg) + 4;
- }
- arg_count = argc;
-
- cmd = idx = GNUNET_malloc (sizeof (char) * (cmdlen + 1));
- argc = 0;
- while (NULL != (arg = argv[argc++]))
- {
- /* This is to escape trailing slash */
- char arg_lastchar = arg[strlen (arg) - 1];
- if (idx == cmd)
- idx += sprintf (idx, "\"%s%s\"%s", path,
- arg_lastchar == '\\' ? "\\" : "", argc + 1 == arg_count ? "" : " ");
- else
- idx += sprintf (idx, "\"%s%s\"%s", arg,
- arg_lastchar == '\\' ? "\\" : "", argc + 1 == arg_count ? "" : " ");
- }
-
- memset (&start, 0, sizeof (start));
- start.cb = sizeof (start);
-
- if ((pipe_stdin != NULL) || (pipe_stdout != NULL))
- start.dwFlags |= STARTF_USESTDHANDLES;
-
- if (pipe_stdin != NULL)
- {
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
- &stdin_handle, sizeof (HANDLE));
- start.hStdInput = stdin_handle;
- }
-
- if (pipe_stdout != NULL)
- {
- GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
- (pipe_stdout,
- GNUNET_DISK_PIPE_END_WRITE),
- &stdout_handle, sizeof (HANDLE));
- start.hStdOutput = stdout_handle;
- }
- if (GNUNET_YES == pipe_control)
- {
- control_pipe =
- npipe_create (&childpipename, GNUNET_DISK_OPEN_WRITE,
- GNUNET_DISK_PERM_USER_READ |
- GNUNET_DISK_PERM_USER_WRITE);
- if (control_pipe == NULL)
- {
- GNUNET_free (cmd);
- GNUNET_free (path);
- return NULL;
- }
- }
- else
- control_pipe = NULL;
- if (NULL != childpipename)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Opened the parent end of the pipe `%s'\n",
- childpipename);
- GNUNET_asprintf (&our_env[0], "%s=", GNUNET_OS_CONTROL_PIPE);
- GNUNET_asprintf (&our_env[1], "%s", childpipename);
- our_env[2] = NULL;
- }
- else
- {
- our_env[0] = NULL;
- }
- env_block = CreateCustomEnvTable (our_env);
- GNUNET_free_non_null (our_env[0]);
- GNUNET_free_non_null (our_env[1]);
-
- if (ERROR_SUCCESS != plibc_conv_to_win_pathwconv(path, wpath)
- || ERROR_SUCCESS != plibc_conv_to_win_pathwconv(cmd, wcmd)
- || !CreateProcessW
- (wpath, wcmd, NULL, NULL, TRUE, DETACHED_PROCESS | CREATE_SUSPENDED,
- env_block, NULL, &start, &proc))
- {
- SetErrnoFromWinError (GetLastError ());
- LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "CreateProcess", path);
- GNUNET_free (env_block);
- GNUNET_free (cmd);
- return NULL;
- }
-
- GNUNET_free (env_block);
-
- gnunet_proc = GNUNET_malloc (sizeof (struct GNUNET_OS_Process));
- gnunet_proc->pid = proc.dwProcessId;
- gnunet_proc->handle = proc.hProcess;
- gnunet_proc->control_pipe = control_pipe;
-
- CreateThread (NULL, 64000, &child_wait_thread, (void *) gnunet_proc, 0, NULL);
-
- ResumeThread (proc.hThread);
- CloseHandle (proc.hThread);
-
- GNUNET_free (cmd);
-
- return gnunet_proc;
-#endif
-}
-
-
-/**
- * Start a process.
- *
- * @param pipe_control should a pipe be used to send signals to the child?
- * @param pipe_stdin pipe to use to send input to child process (or NULL)
- * @param pipe_stdout pipe to use to get output from child process (or NULL)
- * @param filename name of the binary
- * @param va NULL-terminated list of arguments to the process
- * @return pointer to process structure of the new process, NULL on error
- */
-struct GNUNET_OS_Process *
-GNUNET_OS_start_process_va (int pipe_control,
- struct GNUNET_DISK_PipeHandle *pipe_stdin,
- struct GNUNET_DISK_PipeHandle *pipe_stdout,
- const char *filename, va_list va)
-{
- struct GNUNET_OS_Process *ret;
- va_list ap;
- char **argv;
- int argc;
-
- argc = 0;
- va_copy (ap, va);
- while (NULL != va_arg (ap, char *))
- argc++;
- va_end (ap);
- argv = GNUNET_malloc (sizeof (char *) * (argc + 1));
- argc = 0;
- va_copy (ap, va);
- while (NULL != (argv[argc] = va_arg (ap, char *)))
- argc++;
- va_end (ap);
- ret = GNUNET_OS_start_process_vap (pipe_control,
- pipe_stdin,
- pipe_stdout,
- filename,
- argv);
- GNUNET_free (argv);
- return ret;
-}
-
-
-
-/**
- * Start a process.
- *
- * @param pipe_control should a pipe be used to send signals to the child?
- * @param pipe_stdin pipe to use to send input to child process (or NULL)
- * @param pipe_stdout pipe to use to get output from child process (or NULL)
- * @param filename name of the binary
- * @param ... NULL-terminated list of arguments to the process
- *
- * @return pointer to process structure of the new process, NULL on error
- *
- */
-struct GNUNET_OS_Process *
-GNUNET_OS_start_process (int pipe_control,
- struct GNUNET_DISK_PipeHandle *pipe_stdin,
- struct GNUNET_DISK_PipeHandle *pipe_stdout,
- const char *filename, ...)
-{
- struct GNUNET_OS_Process *ret;
- va_list ap;
-
- va_start (ap, filename);
- ret = GNUNET_OS_start_process_va (pipe_control, pipe_stdin, pipe_stdout, filename, ap);
- va_end (ap);
- return ret;
-}
-
-
-/**
- * Start a process.
- *
- * @param pipe_control should a pipe be used to send signals to the child?
- * @param lsocks array of listen sockets to dup systemd-style (or NULL);
- * must be NULL on platforms where dup is not supported
- * @param filename name of the binary
- * @param argv NULL-terminated list of arguments to the process
- * @return process ID of the new process, -1 on error
- */
-struct GNUNET_OS_Process *
-GNUNET_OS_start_process_v (int pipe_control,
- const SOCKTYPE *lsocks,
- const char *filename,
- char *const argv[])
-{
-#ifndef MINGW
- pid_t ret;
- char lpid[16];
- char fds[16];
- struct GNUNET_OS_Process *gnunet_proc = NULL;
- char *childpipename = NULL;
- int i;
- int j;
- int k;
- int tgt;
- int flags;
- int *lscp;
- unsigned int ls;
-
- if ( (GNUNET_YES == pipe_control) &&
- (GNUNET_OK != npipe_setup (&childpipename)) )
- return NULL;
- lscp = NULL;
- ls = 0;
- if (lsocks != NULL)
- {
- i = 0;
- while (-1 != (k = lsocks[i++]))
- GNUNET_array_append (lscp, ls, k);
- GNUNET_array_append (lscp, ls, -1);
+ GNUNET_break (0 == close (1));
+ open_dev_null (1, O_WRONLY);
}
- ret = fork ();
- if (-1 == ret)
+ if (NULL != pipe_stderr)
{
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "fork");
- GNUNET_free_non_null (childpipename);
- GNUNET_array_grow (lscp, ls, 0);
- return NULL;
- }
- if (0 != ret)
- {
- gnunet_proc = GNUNET_malloc (sizeof (struct GNUNET_OS_Process));
- gnunet_proc->pid = ret;
- gnunet_proc->childpipename = childpipename;
- GNUNET_array_grow (lscp, ls, 0);
- return gnunet_proc;
+ GNUNET_break (0 == close (fd_stderr_read));
+ if (-1 == dup2 (fd_stderr_write, 2))
+ LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "dup2");
+ GNUNET_break (0 == close (fd_stderr_write));
}
- if (NULL != childpipename)
+ else if (0 == (std_inheritance & GNUNET_OS_INHERIT_STD_ERR))
{
- setenv (GNUNET_OS_CONTROL_PIPE, childpipename, 1);
- GNUNET_free (childpipename);
+ GNUNET_break (0 == close (2));
+ open_dev_null (2, O_WRONLY);
}
- if (lscp != NULL)
+ if (NULL != lscp)
{
/* read systemd documentation... */
- GNUNET_snprintf (lpid, sizeof (lpid), "%u", getpid ());
- setenv ("LISTEN_PID", lpid, 1);
i = 0;
tgt = 3;
while (-1 != lscp[i])
GNUNET_snprintf (fds, sizeof (fds), "%u", i);
setenv ("LISTEN_FDS", fds, 1);
}
+#ifndef DARWIN
+ /* due to vfork, we must NOT free memory on DARWIN! */
GNUNET_array_grow (lscp, ls, 0);
+#endif
execvp (filename, argv);
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "execvp", filename);
_exit (1);
#else
- struct GNUNET_DISK_FileHandle *control_pipe = NULL;
- char *childpipename = NULL;
- char **arg, **non_const_argv;
+ struct GNUNET_DISK_FileHandle *childpipe_read;
+ struct GNUNET_DISK_FileHandle *childpipe_write;
+ HANDLE childpipe_read_handle;
+ char **arg;
+ char **non_const_argv;
unsigned int cmdlen;
- char *cmd, *idx;
+ char *cmd;
+ char *idx;
STARTUPINFOW start;
PROCESS_INFORMATION proc;
int argcount = 0;
- struct GNUNET_OS_Process *gnunet_proc = NULL;
+ struct GNUNET_OS_Process *gnunet_proc;
char path[MAX_PATH + 1];
- char *our_env[5] = { NULL, NULL, NULL, NULL, NULL };
+ char *our_env[7] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL };
char *env_block = NULL;
char *pathbuf;
- DWORD pathbuf_len, alloc_len;
+ DWORD pathbuf_len;
+ DWORD alloc_len;
char *self_prefix;
char *bindir;
char *libdir;
char *ptr;
char *non_const_filename;
+ char win_path[MAX_PATH + 1];
struct GNUNET_DISK_PipeHandle *lsocks_pipe;
const struct GNUNET_DISK_FileHandle *lsocks_write_fd;
HANDLE lsocks_read;
HANDLE lsocks_write;
- wchar_t wpath[MAX_PATH + 1], wcmd[32768];
+ wchar_t *wpath;
+ wchar_t *wcmd;
+ size_t wpath_len;
+ size_t wcmd_len;
int env_off;
int fail;
+ long lRet;
+ HANDLE stdin_handle;
+ HANDLE stdout_handle;
+ HANDLE stdih, stdoh, stdeh;
+ DWORD stdif, stdof, stdef;
+ BOOL bresult;
+ DWORD error_code;
+ DWORD create_no_window;
+
+ if (GNUNET_SYSERR == GNUNET_OS_check_helper_binary (filename, GNUNET_NO, NULL))
+ return NULL; /* not executable */
/* Search in prefix dir (hopefully - the directory from which
* the current module was loaded), bindir and libdir, then in PATH
}
cmdlen = strlen (filename);
- if (cmdlen < 5 || strcmp (&filename[cmdlen - 4], ".exe") != 0)
+ if ( (cmdlen < 5) || (0 != strcmp (&filename[cmdlen - 4], ".exe")) )
GNUNET_asprintf (&non_const_filename, "%s.exe", filename);
else
GNUNET_asprintf (&non_const_filename, "%s", filename);
- /* Check that this is the full path. If it isn't, search. */
+ /* It could be in POSIX form, convert it to a DOS path early on */
+ if (ERROR_SUCCESS != (lRet = plibc_conv_to_win_path (non_const_filename, win_path)))
+ {
+ SetErrnoFromWinError (lRet);
+ LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_ERROR, "plibc_conv_to_win_path",
+ non_const_filename);
+ GNUNET_free (non_const_filename);
+ GNUNET_free (pathbuf);
+ return NULL;
+ }
+ GNUNET_free (non_const_filename);
+ non_const_filename = GNUNET_strdup (win_path);
+ /* Check that this is the full path. If it isn't, search. */
+ /* FIXME: convert it to wchar_t and use SearchPathW?
+ * Remember: arguments to _start_process() are technically in UTF-8...
+ */
if (non_const_filename[1] == ':')
+ {
snprintf (path, sizeof (path) / sizeof (char), "%s", non_const_filename);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Using path `%s' as-is. PATH is %s\n", path, ptr);
+ }
else if (!SearchPathA
(pathbuf, non_const_filename, NULL, sizeof (path) / sizeof (char),
path, NULL))
GNUNET_free (pathbuf);
return NULL;
}
+ else
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Found `%s' in PATH `%s'\n", path, pathbuf);
GNUNET_free (pathbuf);
GNUNET_free (non_const_filename);
memset (&start, 0, sizeof (start));
start.cb = sizeof (start);
+ if ((pipe_stdin != NULL) || (pipe_stdout != NULL) || (std_inheritance != 0))
+ start.dwFlags |= STARTF_USESTDHANDLES;
+
+ stdih = GetStdHandle (STD_INPUT_HANDLE);
+ GetHandleInformation (stdih, &stdif);
+ if (pipe_stdin != NULL)
+ {
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdin, GNUNET_DISK_PIPE_END_READ),
+ &stdin_handle, sizeof (HANDLE));
+ start.hStdInput = stdin_handle;
+ }
+ else if (stdih)
+ {
+ if (std_inheritance & GNUNET_OS_INHERIT_STD_IN)
+ {
+ SetHandleInformation (stdih, HANDLE_FLAG_INHERIT, 1);
+ if (pipe_stdin == NULL)
+ start.hStdInput = stdih;
+ }
+ else
+ SetHandleInformation (stdih, HANDLE_FLAG_INHERIT, 0);
+ }
+
+
+ stdoh = GetStdHandle (STD_OUTPUT_HANDLE);
+ GetHandleInformation (stdoh, &stdof);
+ if (NULL != pipe_stdout)
+ {
+ GNUNET_DISK_internal_file_handle_ (GNUNET_DISK_pipe_handle
+ (pipe_stdout,
+ GNUNET_DISK_PIPE_END_WRITE),
+ &stdout_handle, sizeof (HANDLE));
+ start.hStdOutput = stdout_handle;
+ }
+ else if (stdoh)
+ {
+ if (std_inheritance & GNUNET_OS_INHERIT_STD_OUT)
+ {
+ SetHandleInformation (stdoh, HANDLE_FLAG_INHERIT, 1);
+ if (pipe_stdout == NULL)
+ start.hStdOutput = stdoh;
+ }
+ else
+ SetHandleInformation (stdoh, HANDLE_FLAG_INHERIT, 0);
+ }
+
+ stdeh = GetStdHandle (STD_ERROR_HANDLE);
+ GetHandleInformation (stdeh, &stdef);
+ if (stdeh)
+ {
+ if (std_inheritance & GNUNET_OS_INHERIT_STD_ERR)
+ {
+ SetHandleInformation (stdeh, HANDLE_FLAG_INHERIT, 1);
+ start.hStdError = stdeh;
+ }
+ else
+ SetHandleInformation (stdeh, HANDLE_FLAG_INHERIT, 0);
+ }
if (GNUNET_YES == pipe_control)
{
- control_pipe =
- npipe_create (&childpipename, GNUNET_DISK_OPEN_WRITE,
- GNUNET_DISK_PERM_USER_READ |
- GNUNET_DISK_PERM_USER_WRITE);
- if (control_pipe == NULL)
+ struct GNUNET_DISK_PipeHandle *childpipe;
+ childpipe = GNUNET_DISK_pipe (GNUNET_NO, GNUNET_NO, GNUNET_YES, GNUNET_NO);
+ if (NULL == childpipe)
+ return NULL;
+ childpipe_read = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_READ);
+ childpipe_write = GNUNET_DISK_pipe_detach_end (childpipe, GNUNET_DISK_PIPE_END_WRITE);
+ GNUNET_DISK_pipe_close (childpipe);
+ if ((NULL == childpipe_read) || (NULL == childpipe_write) ||
+ (GNUNET_OK != GNUNET_DISK_internal_file_handle_ (childpipe_read,
+ &childpipe_read_handle, sizeof (HANDLE))))
{
+ if (childpipe_read)
+ GNUNET_DISK_file_close (childpipe_read);
+ if (childpipe_write)
+ GNUNET_DISK_file_close (childpipe_write);
GNUNET_free (cmd);
- GNUNET_free (path);
return NULL;
}
+ /* Unlike *nix variant, we don't dup the handle, so can't close
+ * filehandle right now.
+ */
+ SetHandleInformation (childpipe_read_handle, HANDLE_FLAG_INHERIT, 1);
}
else
- control_pipe = NULL;
+ {
+ childpipe_read = NULL;
+ childpipe_write = NULL;
+ }
+
if (lsocks != NULL && lsocks[0] != INVALID_SOCKET)
{
lsocks_pipe = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_YES, GNUNET_NO);
if (lsocks_pipe == NULL)
{
GNUNET_free (cmd);
- GNUNET_free (path);
GNUNET_DISK_pipe_close (lsocks_pipe);
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_write);
+ GNUNET_DISK_file_close (childpipe_read);
+ }
return NULL;
}
lsocks_write_fd = GNUNET_DISK_pipe_handle (lsocks_pipe,
(lsocks_pipe, GNUNET_DISK_PIPE_END_READ),
&lsocks_read, sizeof (HANDLE));
}
+ else
+ lsocks_pipe = NULL;
env_off = 0;
- if (NULL != childpipename)
+ if (GNUNET_YES == pipe_control)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Opened the parent end of the pipe `%s'\n",
- childpipename);
GNUNET_asprintf (&our_env[env_off++], "%s=", GNUNET_OS_CONTROL_PIPE);
- GNUNET_asprintf (&our_env[env_off++], "%s", childpipename);
- GNUNET_free (childpipename);
+ GNUNET_asprintf (&our_env[env_off++], "%p", childpipe_read_handle);
}
if ( (lsocks != NULL) && (lsocks[0] != INVALID_SOCKET))
{
env_block = CreateCustomEnvTable (our_env);
while (0 > env_off)
GNUNET_free_non_null (our_env[--env_off]);
- if (ERROR_SUCCESS != plibc_conv_to_win_pathwconv(path, wpath)
- || ERROR_SUCCESS != plibc_conv_to_win_pathwconv(cmd, wcmd)
- || !CreateProcessW
- (wpath, wcmd, NULL, NULL, TRUE, DETACHED_PROCESS | CREATE_SUSPENDED,
- env_block, NULL, &start, &proc))
+
+ wpath_len = 0;
+ if (NULL == (wpath = u8_to_u16 ((uint8_t *) path, 1 + strlen (path), NULL, &wpath_len)))
{
- SetErrnoFromWinError (GetLastError ());
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "CreateProcess");
- if (NULL != control_pipe)
- GNUNET_DISK_file_close (control_pipe);
- if (NULL != lsocks)
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Failed to convert `%s' from UTF-8 to UTF-16: %d\n", path, errno);
+ GNUNET_free (env_block);
+ GNUNET_free (cmd);
+ if (lsocks_pipe)
GNUNET_DISK_pipe_close (lsocks_pipe);
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_write);
+ GNUNET_DISK_file_close (childpipe_read);
+ }
+ return NULL;
+ }
+
+ wcmd_len = 0;
+ if (NULL == (wcmd = u8_to_u16 ((uint8_t *) cmd, 1 + strlen (cmd), NULL, &wcmd_len)))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Failed to convert `%s' from UTF-8 to UTF-16: %d\n",
+ cmd,
+ errno);
GNUNET_free (env_block);
GNUNET_free (cmd);
+ free (wpath);
+ if (lsocks_pipe)
+ GNUNET_DISK_pipe_close (lsocks_pipe);
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_write);
+ GNUNET_DISK_file_close (childpipe_read);
+ }
return NULL;
}
+ create_no_window = 0;
+ {
+ HANDLE console_input = CreateFile ("CONIN$", GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
+ if (INVALID_HANDLE_VALUE == console_input)
+ create_no_window = CREATE_NO_WINDOW;
+ else
+ CloseHandle (console_input);
+ }
+
+ bresult = CreateProcessW (wpath, wcmd, NULL, NULL, GNUNET_YES,
+ create_no_window | CREATE_SUSPENDED, env_block, NULL, &start, &proc);
+ error_code = GetLastError ();
+
+ if ((NULL == pipe_stdin) && (stdih))
+ SetHandleInformation (stdih, HANDLE_FLAG_INHERIT, stdif);
+
+
+ if ((NULL == pipe_stdout) && (stdoh))
+ SetHandleInformation (stdoh, HANDLE_FLAG_INHERIT, stdof);
+
+ if (stdeh)
+ SetHandleInformation (stdeh, HANDLE_FLAG_INHERIT, stdef);
+
+ if (!bresult)
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "CreateProcess(%s, %s) failed: %lu\n",
+ path,
+ cmd,
+ error_code);
+
GNUNET_free (env_block);
+ GNUNET_free (cmd);
+ free (wpath);
+ free (wcmd);
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_read);
+ }
+
+ if (!bresult)
+ {
+ if (GNUNET_YES == pipe_control)
+ {
+ GNUNET_DISK_file_close (childpipe_write);
+ }
+ if (NULL != lsocks)
+ GNUNET_DISK_pipe_close (lsocks_pipe);
+ SetErrnoFromWinError (error_code);
+ return NULL;
+ }
- gnunet_proc = GNUNET_malloc (sizeof (struct GNUNET_OS_Process));
+ gnunet_proc = GNUNET_new (struct GNUNET_OS_Process);
gnunet_proc->pid = proc.dwProcessId;
gnunet_proc->handle = proc.hProcess;
- gnunet_proc->control_pipe = control_pipe;
+ gnunet_proc->control_pipe = childpipe_write;
CreateThread (NULL, 64000, &child_wait_thread, (void *) gnunet_proc, 0, NULL);
ResumeThread (proc.hThread);
CloseHandle (proc.hThread);
- GNUNET_free (cmd);
- if (lsocks == NULL || lsocks[0] == INVALID_SOCKET)
+ if ( (NULL == lsocks) || (INVALID_SOCKET == lsocks[0]) )
return gnunet_proc;
GNUNET_DISK_pipe_close_end (lsocks_pipe, GNUNET_DISK_PIPE_END_READ);
fail = 1;
do
{
- int wrote;
- uint64_t size, count, i;
+ ssize_t wrote;
+ uint64_t size;
+ uint64_t count;
+ unsigned int i;
/* Tell the number of sockets */
for (count = 0; lsocks && lsocks[count] != INVALID_SOCKET; count++);
wrote = GNUNET_DISK_file_write (lsocks_write_fd, &count, sizeof (count));
- if (wrote != sizeof (count))
+ if (sizeof (count) != wrote)
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to write %u count bytes to the child: %u\n", sizeof (count), GetLastError ());
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to write %u count bytes to the child: %u\n",
+ sizeof (count), GetLastError ());
break;
}
for (i = 0; lsocks && lsocks[i] != INVALID_SOCKET; i++)
/* Get a socket duplication info */
if (SOCKET_ERROR == WSADuplicateSocketA (lsocks[i], gnunet_proc->pid, &pi))
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to duplicate an socket[%llu]: %u\n", i, GetLastError ());
- LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR, "CreateProcess");
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to duplicate an socket[%llu]: %u\n", i,
+ GetLastError ());
break;
}
/* Synchronous I/O is not nice, but we can't schedule this:
*/
size = sizeof (pi);
wrote = GNUNET_DISK_file_write (lsocks_write_fd, &size, sizeof (size));
- if (wrote != sizeof (size))
+ if (sizeof (size) != wrote)
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to write %u size[%llu] bytes to the child: %u\n", sizeof (size), i, GetLastError ());
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to write %u size[%llu] bytes to the child: %u\n",
+ sizeof (size), i, GetLastError ());
break;
}
/* Finally! Send the data */
wrote = GNUNET_DISK_file_write (lsocks_write_fd, &pi, sizeof (pi));
- if (wrote != sizeof (pi))
+ if (sizeof (pi) != wrote)
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to write %u socket[%llu] bytes to the child: %u\n", sizeof (pi), i, GetLastError ());
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to write %u socket[%llu] bytes to the child: %u\n",
+ sizeof (pi), i, GetLastError ());
break;
}
}
/* If we can't pass on the socket(s), the child will block forever,
* better put it out of its misery.
*/
- TerminateProcess (gnunet_proc->handle, 0);
+ SafeTerminateProcess (gnunet_proc->handle, 0, 0);
CloseHandle (gnunet_proc->handle);
if (NULL != gnunet_proc->control_pipe)
GNUNET_DISK_file_close (gnunet_proc->control_pipe);
/**
- * Retrieve the status of a process
+ * Start a process.
+ *
+ * @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
+ * @param pipe_stdin pipe to use to send input to child process (or NULL)
+ * @param pipe_stdout pipe to use to get output from child process (or NULL)
+ * @param pipe_stderr pipe to use to get output from child process (or NULL)
+ * @param filename name of the binary
+ * @param argv NULL-terminated array of arguments to the process
+ * @return pointer to process structure of the new process, NULL on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process_vap (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ struct GNUNET_DISK_PipeHandle *pipe_stdin,
+ struct GNUNET_DISK_PipeHandle *pipe_stdout,
+ struct GNUNET_DISK_PipeHandle *pipe_stderr,
+ const char *filename,
+ char *const argv[])
+{
+ return start_process (pipe_control,
+ std_inheritance,
+ pipe_stdin,
+ pipe_stdout,
+ pipe_stderr,
+ NULL,
+ filename,
+ argv);
+}
+
+
+/**
+ * Start a process.
+ *
+ * @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
+ * @param pipe_stdin pipe to use to send input to child process (or NULL)
+ * @param pipe_stdout pipe to use to get output from child process (or NULL)
+ * @param pipe_stderr pipe to use to get output from child process (or NULL)
+ * @param filename name of the binary
+ * @param va NULL-terminated list of arguments to the process
+ * @return pointer to process structure of the new process, NULL on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process_va (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ struct GNUNET_DISK_PipeHandle *pipe_stdin,
+ struct GNUNET_DISK_PipeHandle *pipe_stdout,
+ struct GNUNET_DISK_PipeHandle *pipe_stderr,
+ const char *filename, va_list va)
+{
+ struct GNUNET_OS_Process *ret;
+ va_list ap;
+ char **argv;
+ int argc;
+
+ argc = 0;
+ va_copy (ap, va);
+ while (NULL != va_arg (ap, char *))
+ argc++;
+ va_end (ap);
+ argv = GNUNET_malloc (sizeof (char *) * (argc + 1));
+ argc = 0;
+ va_copy (ap, va);
+ while (NULL != (argv[argc] = va_arg (ap, char *)))
+ argc++;
+ va_end (ap);
+ ret = GNUNET_OS_start_process_vap (pipe_control,
+ std_inheritance,
+ pipe_stdin,
+ pipe_stdout,
+ pipe_stderr,
+ filename,
+ argv);
+ GNUNET_free (argv);
+ return ret;
+}
+
+
+/**
+ * Start a process.
+ *
+ * @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
+ * @param pipe_stdin pipe to use to send input to child process (or NULL)
+ * @param pipe_stdout pipe to use to get output from child process (or NULL)
+ * @param filename name of the binary
+ * @param ... NULL-terminated list of arguments to the process
+ * @return pointer to process structure of the new process, NULL on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ struct GNUNET_DISK_PipeHandle *pipe_stdin,
+ struct GNUNET_DISK_PipeHandle *pipe_stdout,
+ struct GNUNET_DISK_PipeHandle *pipe_stderr,
+ const char *filename, ...)
+{
+ struct GNUNET_OS_Process *ret;
+ va_list ap;
+
+ va_start (ap, filename);
+ ret = GNUNET_OS_start_process_va (pipe_control,
+ std_inheritance,
+ pipe_stdin,
+ pipe_stdout,
+ pipe_stderr,
+ filename,
+ ap);
+ va_end (ap);
+ return ret;
+}
+
+
+/**
+ * Start a process.
+ *
+ * @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags controlling which
+ * std handles of the parent are inherited by the child.
+ * pipe_stdin and pipe_stdout take priority over std_inheritance
+ * (when they are non-NULL).
+ * @param lsocks array of listen sockets to dup systemd-style (or NULL);
+ * must be NULL on platforms where dup is not supported
+ * @param filename name of the binary
+ * @param argv NULL-terminated list of arguments to the process
+ * @return process ID of the new process, -1 on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process_v (int pipe_control,
+ enum GNUNET_OS_InheritStdioFlags std_inheritance,
+ const SOCKTYPE *lsocks,
+ const char *filename,
+ char *const argv[])
+{
+ return start_process (pipe_control,
+ std_inheritance,
+ NULL,
+ NULL,
+ NULL,
+ lsocks,
+ filename,
+ argv);
+}
+
+
+/**
+ * Start a process. This function is similar to the GNUNET_OS_start_process_*
+ * except that the filename and arguments can have whole strings which contain
+ * the arguments. These arguments are to be separated by spaces and are parsed
+ * in the order they appear. Arguments containing spaces can be used by
+ * quoting them with @em ".
+ *
+ * @param pipe_control should a pipe be used to send signals to the child?
+ * @param std_inheritance a set of GNUNET_OS_INHERIT_STD_* flags
+ * @param lsocks array of listen sockets to dup systemd-style (or NULL);
+ * must be NULL on platforms where dup is not supported
+ * @param filename name of the binary. It is valid to have the arguments
+ * in this string when they are separated by spaces.
+ * @param ... more arguments. Should be of type `char *`. It is valid
+ * to have the arguments in these strings when they are separated by
+ * spaces. The last argument MUST be NULL.
+ * @return pointer to process structure of the new process, NULL on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process_s (int pipe_control,
+ unsigned int std_inheritance,
+ const SOCKTYPE * lsocks,
+ const char *filename, ...)
+{
+ va_list ap;
+ char **argv;
+ unsigned int argv_size;
+ const char *arg;
+ const char *rpos;
+ char *pos;
+ char *cp;
+ const char *last;
+ struct GNUNET_OS_Process *proc;
+ char *binary_path;
+ int quote_on;
+ unsigned int i;
+ size_t len;
+
+ argv_size = 1;
+ va_start (ap, filename);
+ arg = filename;
+ last = NULL;
+ do
+ {
+ rpos = arg;
+ quote_on = 0;
+ while ('\0' != *rpos)
+ {
+ if ('"' == *rpos)
+ {
+ if (1 == quote_on)
+ quote_on = 0;
+ else
+ quote_on = 1;
+ }
+ if ( (' ' == *rpos) && (0 == quote_on) )
+ {
+ if (NULL != last)
+ argv_size++;
+ last = NULL;
+ rpos++;
+ while (' ' == *rpos)
+ rpos++;
+ }
+ if ( (NULL == last) && ('\0' != *rpos) ) // FIXME: == or !=?
+ last = rpos;
+ if ('\0' != *rpos)
+ rpos++;
+ }
+ if (NULL != last)
+ argv_size++;
+ }
+ while (NULL != (arg = (va_arg (ap, const char*))));
+ va_end (ap);
+
+ argv = GNUNET_malloc (argv_size * sizeof (char *));
+ argv_size = 0;
+ va_start (ap, filename);
+ arg = filename;
+ last = NULL;
+ do
+ {
+ cp = GNUNET_strdup (arg);
+ quote_on = 0;
+ pos = cp;
+ while ('\0' != *pos)
+ {
+ if ('"' == *pos)
+ {
+ if (1 == quote_on)
+ quote_on = 0;
+ else
+ quote_on = 1;
+ }
+ if ( (' ' == *pos) && (0 == quote_on) )
+ {
+ *pos = '\0';
+ if (NULL != last)
+ argv[argv_size++] = GNUNET_strdup (last);
+ last = NULL;
+ pos++;
+ while (' ' == *pos)
+ pos++;
+ }
+ if ( (NULL == last) && ('\0' != *pos)) // FIXME: == or !=?
+ last = pos;
+ if ('\0' != *pos)
+ pos++;
+ }
+ if (NULL != last)
+ argv[argv_size++] = GNUNET_strdup (last);
+ last = NULL;
+ GNUNET_free (cp);
+ }
+ while (NULL != (arg = (va_arg (ap, const char*))));
+ va_end (ap);
+ argv[argv_size] = NULL;
+
+ for(i = 0; i < argv_size; i++)
+ {
+ len = strlen (argv[i]);
+ if ( (argv[i][0] == '"') && (argv[i][len-1] == '"'))
+ {
+ memmove (&argv[i][0], &argv[i][1], len - 2);
+ argv[i][len-2] = '\0';
+ }
+ }
+ binary_path = argv[0];
+ proc = GNUNET_OS_start_process_v (pipe_control, std_inheritance, lsocks,
+ binary_path, argv);
+ while (argv_size > 0)
+ GNUNET_free (argv[--argv_size]);
+ GNUNET_free (argv);
+ return proc;
+}
+
+
+/**
+ * Retrieve the status of a process, waiting on him if dead.
+ * Nonblocking version.
+ *
* @param proc process ID
* @param type status type
* @param code return code/signal number
- * @return GNUNET_OK on success, GNUNET_NO if the process is still running, GNUNET_SYSERR otherwise
+ * @return #GNUNET_OK on success, #GNUNET_NO if the process is still running, #GNUNET_SYSERR otherwise
*/
int
GNUNET_OS_process_status (struct GNUNET_OS_Process *proc,
ret = waitpid (proc->pid, &status, WNOHANG);
if (ret < 0)
{
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "waitpid");
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING,
+ "waitpid");
return GNUNET_SYSERR;
}
if (0 == ret)
ret = proc->pid;
if (h == NULL || ret == 0)
{
- LOG (GNUNET_ERROR_TYPE_WARNING, "Invalid process information {%d, %08X}\n",
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Invalid process information {%d, %08X}\n",
ret, h);
return GNUNET_SYSERR;
}
/**
- * Wait for a process
+ * Wait for a process to terminate. The return code is discarded.
+ * You must not use #GNUNET_OS_process_status() on the same process
+ * after calling this function! This function is blocking and should
+ * thus only be used if the child process is known to have terminated
+ * or to terminate very soon.
+ *
* @param proc pointer to process structure
- * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR otherwise
*/
int
GNUNET_OS_process_wait (struct GNUNET_OS_Process *proc)
{
-
#ifndef MINGW
pid_t pid = proc->pid;
pid_t ret;
while ( (pid != (ret = waitpid (pid, NULL, 0))) &&
(EINTR == errno) ) ;
- if (pid != ret)
+ if (pid != ret)
{
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "waitpid");
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING,
+ "waitpid");
return GNUNET_SYSERR;
}
return GNUNET_OK;
#else
HANDLE h;
- int ret;
h = proc->handle;
if (NULL == h)
{
- LOG (GNUNET_ERROR_TYPE_WARNING, "Invalid process information {%d, %08X}\n",
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Invalid process information {%d, %08X}\n",
proc->pid, h);
return GNUNET_SYSERR;
}
- if (h == NULL)
+ if (NULL == h)
h = GetCurrentProcess ();
if (WAIT_OBJECT_0 != WaitForSingleObject (h, INFINITE))
{
SetErrnoFromWinError (GetLastError ());
- ret = GNUNET_SYSERR;
+ return GNUNET_SYSERR;
}
- else
- ret = GNUNET_OK;
-
- return ret;
+ return GNUNET_OK;
#endif
}
GNUNET_OS_LineProcessor proc;
/**
- * Closure for 'proc'.
+ * Closure for @e proc.
*/
void *proc_cls;
/**
* Task reading from pipe.
*/
- GNUNET_SCHEDULER_TaskIdentifier rtask;
+ struct GNUNET_SCHEDULER_Task *rtask;
/**
* When to time out.
void
GNUNET_OS_command_stop (struct GNUNET_OS_CommandHandle *cmd)
{
-
- if (cmd->proc != NULL)
+ if (NULL != cmd->proc)
{
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != cmd->rtask);
+ GNUNET_assert (NULL != cmd->rtask);
GNUNET_SCHEDULER_cancel (cmd->rtask);
}
(void) GNUNET_OS_process_kill (cmd->eip, SIGKILL);
GNUNET_break (GNUNET_OK == GNUNET_OS_process_wait (cmd->eip));
- GNUNET_OS_process_close (cmd->eip);
+ GNUNET_OS_process_destroy (cmd->eip);
GNUNET_DISK_pipe_close (cmd->opipe);
GNUNET_free (cmd);
}
/**
* Read from the process and call the line processor.
*
- * @param cls the 'struct GNUNET_OS_CommandHandle'
- * @param tc scheduler context
+ * @param cls the `struct GNUNET_OS_CommandHandle *`
*/
static void
-cmd_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+cmd_read (void *cls)
{
struct GNUNET_OS_CommandHandle *cmd = cls;
+ const struct GNUNET_SCHEDULER_TaskContext *tc;
GNUNET_OS_LineProcessor proc;
char *end;
ssize_t ret;
- cmd->rtask = GNUNET_SCHEDULER_NO_TASK;
- if (GNUNET_YES != GNUNET_NETWORK_fdset_handle_isset (tc->read_ready, cmd->r))
+ cmd->rtask = NULL;
+ tc = GNUNET_SCHEDULER_get_task_context ();
+ if (GNUNET_YES !=
+ GNUNET_NETWORK_fdset_handle_isset (tc->read_ready,
+ cmd->r))
{
- /* timeout, shutdown, etc. */
+ /* timeout */
proc = cmd->proc;
cmd->proc = NULL;
proc (cmd->proc_cls, NULL);
return;
}
- ret =
- GNUNET_DISK_file_read (cmd->r, &cmd->buf[cmd->off],
- sizeof (cmd->buf) - cmd->off);
+ ret = GNUNET_DISK_file_read (cmd->r,
+ &cmd->buf[cmd->off],
+ sizeof (cmd->buf) - cmd->off);
if (ret <= 0)
{
if ((cmd->off > 0) && (cmd->off < sizeof (cmd->buf)))
}
end = memchr (&cmd->buf[cmd->off], '\n', ret);
cmd->off += ret;
- while (end != NULL)
+ while (NULL != end)
{
*end = '\0';
cmd->proc (cmd->proc_cls, cmd->buf);
cmd->off -= (end + 1 - cmd->buf);
end = memchr (cmd->buf, '\n', cmd->off);
}
- cmd->rtask =
- GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_absolute_get_remaining
- (cmd->timeout), cmd->r, &cmd_read, cmd);
+ cmd->rtask
+ = GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_absolute_get_remaining
+ (cmd->timeout),
+ cmd->r,
+ &cmd_read, cmd);
}
* for each line of the output.
*
* @param proc function to call for each line of the output
- * @param proc_cls closure for proc
+ * @param proc_cls closure for @a proc
* @param timeout when to time out
* @param binary command to run
* @param ... arguments to command
* @return NULL on error
*/
struct GNUNET_OS_CommandHandle *
-GNUNET_OS_command_run (GNUNET_OS_LineProcessor proc, void *proc_cls,
- struct GNUNET_TIME_Relative timeout, const char *binary,
+GNUNET_OS_command_run (GNUNET_OS_LineProcessor proc,
+ void *proc_cls,
+ struct GNUNET_TIME_Relative timeout,
+ const char *binary,
...)
{
struct GNUNET_OS_CommandHandle *cmd;
struct GNUNET_DISK_PipeHandle *opipe;
va_list ap;
- opipe = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_NO, GNUNET_YES);
+ opipe = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES,
+ GNUNET_NO, GNUNET_YES);
if (NULL == opipe)
return NULL;
va_start (ap, binary);
- eip = GNUNET_OS_start_process_va (GNUNET_NO, NULL, opipe, binary, ap);
+ /* redirect stdout, don't inherit stderr/stdin */
+ eip = GNUNET_OS_start_process_va (GNUNET_NO, 0, NULL,
+ opipe, NULL, binary,
+ ap);
va_end (ap);
if (NULL == eip)
{
return NULL;
}
GNUNET_DISK_pipe_close_end (opipe, GNUNET_DISK_PIPE_END_WRITE);
- cmd = GNUNET_malloc (sizeof (struct GNUNET_OS_CommandHandle));
+ cmd = GNUNET_new (struct GNUNET_OS_CommandHandle);
cmd->timeout = GNUNET_TIME_relative_to_absolute (timeout);
cmd->eip = eip;
cmd->opipe = opipe;
cmd->proc = proc;
cmd->proc_cls = proc_cls;
- cmd->r = GNUNET_DISK_pipe_handle (opipe, GNUNET_DISK_PIPE_END_READ);
- cmd->rtask = GNUNET_SCHEDULER_add_read_file (timeout, cmd->r, &cmd_read, cmd);
+ cmd->r = GNUNET_DISK_pipe_handle (opipe,
+ GNUNET_DISK_PIPE_END_READ);
+ cmd->rtask = GNUNET_SCHEDULER_add_read_file (timeout,
+ cmd->r,
+ &cmd_read,
+ cmd);
return cmd;
}
-
-
/* end of os_priority.c */