#include "gnunet_configuration_lib.h"
#include "gnunet_scheduler_lib.h"
+/**
+ * Process information (OS-dependent)
+ */
+struct GNUNET_OS_Process;
+
/**
* Possible installation paths to request
*/
enum GNUNET_OS_InstallationPathKind
{
+ /**
+ * Return the "PREFIX" directory given to configure.
+ */
GNUNET_OS_IPK_PREFIX,
+
+ /**
+ * Return the directory where the program binaries are installed. (bin/)
+ */
GNUNET_OS_IPK_BINDIR,
+
+ /**
+ * Return the directory where libraries are installed. (lib/)
+ */
GNUNET_OS_IPK_LIBDIR,
+
+ /**
+ * Return the directory where data is installed (share/)
+ */
GNUNET_OS_IPK_DATADIR,
+
+ /**
+ * Return the directory where translations are installed (share/locale/)
+ */
GNUNET_OS_IPK_LOCALEDIR,
- GNUNET_OS_IPK_SELF_PREFIX
+
+ /**
+ * Return the installation directory of this application, not
+ * the one of the overall GNUnet installation (in case they
+ * are different).
+ */
+ GNUNET_OS_IPK_SELF_PREFIX,
+
+ /**
+ * Return the prefix of the path with application icons.
+ */
+ GNUNET_OS_IPK_ICONDIR
+};
+
+
+/**
+ * Process status types
+ */
+enum GNUNET_OS_ProcessStatusType
+{
+ /**
+ * The process is not known to the OS (or at
+ * least not one of our children).
+ */
+ GNUNET_OS_PROCESS_UNKNOWN,
+
+ /**
+ * The process is still running.
+ */
+ GNUNET_OS_PROCESS_RUNNING,
+
+ /**
+ * The process is paused (but could be resumed).
+ */
+ GNUNET_OS_PROCESS_STOPPED,
+
+ /**
+ * The process exited with a return code.
+ */
+ GNUNET_OS_PROCESS_EXITED,
+
+ /**
+ * The process was killed by a signal.
+ */
+ GNUNET_OS_PROCESS_SIGNALED
};
/**
* @brief Enumerate all network interfaces
- * @param callback the callback function
+ * @param proc the callback function
+ * @param proc_cls closure for proc
*/
void GNUNET_OS_network_interfaces_list (GNUNET_OS_NetworkInterfaceProcessor
- proc, void *cls);
+ proc, void *proc_cls);
+
+/**
+ * @brief Get maximum string length returned by gethostname()
+ */
+#if HAVE_SYSCONF && defined(_SC_HOST_NAME_MAX)
+#define GNUNET_OS_get_hostname_max_length() ({ int __sc_tmp = sysconf(_SC_HOST_NAME_MAX); __sc_tmp <= 0 ? 255 : __sc_tmp; })
+#elif defined(HOST_NAME_MAX)
+#define GNUNET_OS_get_hostname_max_length() HOST_NAME_MAX
+#else
+#define GNUNET_OS_get_hostname_max_length() 255
+#endif
+
/**
- * Get the current CPU load.
+ * Get process structure for current process
*
- * @param cfg to determine acceptable load level (LOAD::MAXCPULOAD)
- * @return -1 on error, otherwise load value (between 0 and 100,
- * (100 is equivalent to full load for one CPU)
+ * The pointer it returns points to static memory location and must not be
+ * deallocated/closed
+ *
+ * @return pointer to the process sturcutre for this process
+ */
+struct GNUNET_OS_Process *GNUNET_OS_process_current (void);
+
+
+/**
+ * Sends sig to the process
+ *
+ * @param proc pointer to process structure
+ * @param sig signal
+ * @return 0 on success, -1 on error
*/
-int GNUNET_OS_load_cpu_get (struct GNUNET_CONFIGURATION_Handle *cfg);
+int GNUNET_OS_process_kill (struct GNUNET_OS_Process *proc, int sig);
+
/**
- * Get the current IO load.
+ * Cleans up process structure contents (OS-dependent) and deallocates it
*
- * @param cfg to determine acceptable load level (LOAD::MAXIOLOAD)
- * @return -1 on error, otherwise load value (between 0 and 100,
- * 100 means that we spend all of our cycles waiting for
- * the disk)
+ * @param proc pointer to process structure
*/
-int GNUNET_OS_load_disk_get (struct GNUNET_CONFIGURATION_Handle *cfg);
+void GNUNET_OS_process_close (struct GNUNET_OS_Process *proc);
+/**
+ * Get the pid of the process in question
+ *
+ * @param proc the process to get the pid of
+ *
+ * @return the current process id
+ */
+pid_t
+GNUNET_OS_process_get_pid (struct GNUNET_OS_Process *proc);
/**
* Set process priority
*
- * @param proc id of the process
+ * @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 (pid_t proc,
+int GNUNET_OS_set_process_priority (struct GNUNET_OS_Process *proc,
enum GNUNET_SCHEDULER_Priority prio);
/**
* Start a process.
*
+ * @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 process ID of the new process, -1 on error
+ * @return pointer to process structure of the new process, NULL on error
*/
-pid_t GNUNET_OS_start_process (const char *filename, ...);
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process (struct GNUNET_DISK_PipeHandle *pipe_stdin,
+ struct GNUNET_DISK_PipeHandle *pipe_stdout,
+ const char *filename, ...);
+
/**
* Start a process.
*
+ * @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,
* including the process name as the first argument
- * @return process ID of the new process, -1 on error
+ * @return pointer to process structure of the new process, NULL on error
+ */
+struct GNUNET_OS_Process *
+GNUNET_OS_start_process_v (const int *lsocks, const char *filename,
+ char *const argv[]);
+
+
+/**
+ * Retrieve the status of a process
+ * @param proc pointer to process structure
+ * @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
+ */
+int GNUNET_OS_process_status (struct GNUNET_OS_Process *proc,
+ enum GNUNET_OS_ProcessStatusType *type, unsigned long *code);
+
+
+/**
+ * Wait for a process
+ * @param proc pointer to process structure of the process to wait for
+ * @return GNUNET_OK on success, GNUNET_SYSERR otherwise
+ */
+int GNUNET_OS_process_wait (struct GNUNET_OS_Process *proc);
+
+
+/**
+ * Connects this process to its parent via pipe
*/
-pid_t GNUNET_OS_start_process_v (const char *filename, char *const argv[]);
+void
+GNUNET_OS_install_parent_control_handler (void *cls,
+ const struct
+ GNUNET_SCHEDULER_TaskContext * tc);
#if 0 /* keep Emacsens' auto-indent happy */
{
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