/*
This file is part of GNUnet.
- (C) 2001, 2002, 2003, 2004, 2005, 2006, 2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2001, 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 3, or (at your
- option) any later version.
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
- 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.
+ SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
- * @file include/gnunet_os_lib.h
- * @brief low level process routines
* @author Christian Grothoff
* @author Krista Bennett
* @author Gerd Knorr <kraxel@bytesex.org>
* @author Tzvetan Horozov
* @author Milan
*
+ * @file
+ * Low level process routines
+ *
+ * @defgroup os OS library
+ * Low level process routines.
+ *
* This code manages child processes. We can communicate with child
* processes using signals. Because signals are not supported on W32
* and Java (at least not nicely), we can alternatively use a pipe
* termination via signals, and not as a replacement for SIGKILL.
* Thus using pipes to communicate signals should only be enabled if
* the child is a Java process OR if we are on Windoze.
+ *
+ * @{
*/
#ifndef GNUNET_OS_LIB_H
};
+/**
+ * Project-specific data used to help the OS subsystem
+ * find installation paths.
+ */
+struct GNUNET_OS_ProjectData
+{
+ /**
+ * Name of a library that is installed in the "lib/" directory of
+ * the project, such as "libgnunetutil". Used to locate the
+ * installation by scanning dependencies of the current process.
+ */
+ const char *libname;
+
+ /**
+ * Name of the project that is used in the "libexec" prefix, For
+ * example, "gnunet". Certain helper binaries are then expected to
+ * be installed in "$PREFIX/libexec/gnunet/" and resources in
+ * "$PREFIX/share/gnunet/".
+ */
+ const char *project_dirname;
+
+ /**
+ * Name of a project-specific binary that should be in "$PREFIX/bin/".
+ * Used to determine installation path from $PATH variable.
+ * For example "gnunet-arm". On W32, ".exe" should be omitted.
+ */
+ const char *binary_name;
+
+ /**
+ * Name of an environment variable that can be used to override
+ * installation path detection, for example "GNUNET_PREFIX".
+ */
+ const char *env_varname;
+
+ /**
+ * Alternative name of an environment variable that can be used to
+ * override installation path detection, if "env_varname" is not
+ * set. Again, for example, "GNUNET_PREFIX".
+ */
+ const char *env_varname_alt;
+
+ /**
+ * Name of an environment variable that can be used to override
+ * the location from which default configuration files are loaded
+ * from, for example "GNUNET_BASE_CONFIG".
+ */
+ const char *base_config_varname;
+
+ /**
+ * E-mail address for reporting bugs.
+ */
+ const char *bug_email;
+
+ /**
+ * Project homepage.
+ */
+ const char *homepage;
+
+ /**
+ * Configuration file name (in $XDG_CONFIG_HOME) to use.
+ */
+ const char *config_file;
+
+ /**
+ * Configuration file name to use (if $XDG_CONFIG_HOME is not set).
+ */
+ const char *user_config_file;
+
+};
+
+
+/**
+ * Return default project data used by 'libgnunetutil' for GNUnet.
+ */
+const struct GNUNET_OS_ProjectData *
+GNUNET_OS_project_data_default (void);
+
+
+/**
+ * @return current (actual) project data.
+ */
+const struct GNUNET_OS_ProjectData *
+GNUNET_OS_project_data_get (void);
+
+
+/**
+ * Setup OS subsystem with project data.
+ *
+ * @param pd project data used to determine paths.
+ */
+void
+GNUNET_OS_init (const struct GNUNET_OS_ProjectData *pd);
+
+
/**
* Get the path to a specific GNUnet installation directory or, with
* #GNUNET_OS_IPK_SELF_PREFIX, the current running apps installation
* @param addrlen length of the address
* @return #GNUNET_OK to continue iteration, #GNUNET_SYSERR to abort
*/
-typedef int (*GNUNET_OS_NetworkInterfaceProcessor) (void *cls,
- const char *name,
- int isDefault,
- const struct sockaddr *addr,
- const struct sockaddr *broadcast_addr,
- const struct sockaddr *netmask,
- socklen_t addrlen);
+typedef int
+(*GNUNET_OS_NetworkInterfaceProcessor) (void *cls,
+ const char *name,
+ int isDefault,
+ const struct sockaddr *addr,
+ const struct sockaddr *broadcast_addr,
+ const struct sockaddr *netmask,
+ socklen_t addrlen);
/**
* @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);
/**
* @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 error 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
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[]);
* @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 error 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
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, ...);
* @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 error 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
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);
/**
* @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 first_arg name of the binary. It is valid to have the arguments
+ * @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
* @param cls closure
* @param line line of output from a command, NULL for the end
*/
-typedef void (*GNUNET_OS_LineProcessor) (void *cls, const char *line);
+typedef void
+(*GNUNET_OS_LineProcessor) (void *cls, const char *line);
/**
* @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,
...);
/**
- * Retrieve the status of a process, waiting on him if dead.
+ * Retrieve the status of a process, waiting on it if dead.
* Nonblocking version.
*
* @param proc pointer to process structure
/**
* Wait for a process to terminate. The return code is discarded.
- * You must not use 'GNUNET_OS_process_status' on the same process
+ * 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.
GNUNET_OS_process_wait (struct GNUNET_OS_Process *proc);
+
+/**
+ * Retrieve the status of a process, waiting on it if dead.
+ * Blocking version.
+ *
+ * @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_wait_status (struct GNUNET_OS_Process *proc,
+ enum GNUNET_OS_ProcessStatusType *type,
+ unsigned long *code);
+
+
/**
* 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);
/**
* #GNUNET_SYSERR on error (no such binary or not executable)
*/
int
-GNUNET_OS_check_helper_binary (const char *binary, int check_suid, const char * params);
+GNUNET_OS_check_helper_binary (const char *binary,
+ int check_suid,
+ const char *params);
#if 0 /* keep Emacsens' auto-indent happy */
}
#endif
-
/* ifndef GNUNET_OS_LIB_H */
#endif
+
+/** @} */ /* end of group */
+
/* end of gnunet_os_lib.h */
projects / oweals / gnunet.git / blobdiff