X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=src%2Finclude%2Fgnunet_os_lib.h;h=c56947431e49889afa1e2c71bd3f4c105f531879;hb=b0c7119fa2f43fe1b5978651152974359de5a5d2;hp=32d9dc7ff5fb659d8903447ba69034be4dd7ed8d;hpb=d720cc786723169cfdbb246ad6f1f584581f589d;p=oweals%2Fgnunet.git diff --git a/src/include/gnunet_os_lib.h b/src/include/gnunet_os_lib.h index 32d9dc7ff..c56947431 100644 --- a/src/include/gnunet_os_lib.h +++ b/src/include/gnunet_os_lib.h @@ -1,6 +1,6 @@ /* This file is part of GNUnet. - (C) 2001, 2002, 2003, 2004, 2005, 2006 Christian Grothoff (and other contributing authors) + (C) 2001, 2002, 2003, 2004, 2005, 2006, 2011 Christian Grothoff (and other contributing authors) GNUnet is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published @@ -44,6 +44,11 @@ extern "C" #include "gnunet_configuration_lib.h" #include "gnunet_scheduler_lib.h" +/** + * Process information (OS-dependent) + */ +struct GNUNET_OS_Process; + /** * Possible installation paths to request @@ -61,12 +66,12 @@ enum GNUNET_OS_InstallationPathKind GNUNET_OS_IPK_BINDIR, /** - * Return the directory where libraries are installed. (lib/) + * Return the directory where libraries are installed. (lib/gnunet/) */ GNUNET_OS_IPK_LIBDIR, /** - * Return the directory where data is installed (share/) + * Return the directory where data is installed (share/gnunet/) */ GNUNET_OS_IPK_DATADIR, @@ -80,7 +85,18 @@ enum GNUNET_OS_InstallationPathKind * the one of the overall GNUnet installation (in case they * are different). */ - GNUNET_OS_IPK_SELF_PREFIX + GNUNET_OS_IPK_SELF_PREFIX, + + /** + * Return the prefix of the path with application icons (share/icons/). + */ + GNUNET_OS_IPK_ICONDIR, + + /** + * Return the prefix of the path with documentation files, including the + * license (share/doc/gnunet/). + */ + GNUNET_OS_IPK_DOCDIR }; @@ -125,8 +141,8 @@ enum GNUNET_OS_ProcessStatusType * @param dirkind what kind of directory is desired? * @return a pointer to the dir path (to be freed by the caller) */ -char *GNUNET_OS_installation_get_path (enum GNUNET_OS_InstallationPathKind - dirkind); +char * +GNUNET_OS_installation_get_path (enum GNUNET_OS_InstallationPathKind dirkind); /** @@ -136,14 +152,19 @@ char *GNUNET_OS_installation_get_path (enum GNUNET_OS_InstallationPathKind * @param name name of the interface (can be NULL for unknown) * @param isDefault is this presumably the default interface * @param addr address of this interface (can be NULL for unknown or unassigned) + * @param broadcast_addr the broadcast address (can be NULL for unknown or unassigned) + * @param netmask the network mask (can be NULL for unknown or unassigned)) * @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, +typedef int (*GNUNET_OS_NetworkInterfaceProcessor) (void *cls, const char *name, int isDefault, const struct sockaddr * - addr, socklen_t addrlen); + addr, + const struct sockaddr * + broadcast_addr, + const struct sockaddr * + netmask, socklen_t addrlen); /** @@ -151,39 +172,90 @@ typedef int (*GNUNET_OS_NetworkInterfaceProcessor) (void *cls, * @param proc the callback function * @param proc_cls closure for proc */ -void GNUNET_OS_network_interfaces_list (GNUNET_OS_NetworkInterfaceProcessor - proc, void *proc_cls); +void +GNUNET_OS_network_interfaces_list (GNUNET_OS_NetworkInterfaceProcessor 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 process structure for current process + * + * 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); + /** - * Get the current CPU load. + * Sends sig to the 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) + * @param proc pointer to process structure + * @param sig signal + * @return 0 on success, -1 on error */ -int GNUNET_OS_load_cpu_get (const 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 (const 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, - enum GNUNET_SCHEDULER_Priority prio); +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 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 (struct GNUNET_DISK_PipeHandle *pipe_stdin, + struct GNUNET_DISK_PipeHandle *pipe_stdout, + const char *filename, + char *const argv[]); /** @@ -193,42 +265,132 @@ int GNUNET_OS_set_process_priority (pid_t proc, * @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 (struct GNUNET_DISK_PipeHandle *pipe_stdin, - struct GNUNET_DISK_PipeHandle *pipe_stdout, - 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 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 (struct GNUNET_DISK_PipeHandle *pipe_stdin, + struct GNUNET_DISK_PipeHandle *pipe_stdout, + const char *filename, va_list va); + +/** + * 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 SOCKTYPE *lsocks, const char *filename, + char *const argv[]); + + +/** + * Handle to a command action. + */ +struct GNUNET_OS_CommandHandle; + +/** + * Type of a function to process a line of output. + * + * @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); + +/** + * Stop/kill a command. + * + * @param cmd handle to the process + */ +void +GNUNET_OS_command_stop (struct GNUNET_OS_CommandHandle *cmd); + + +/** + * Run the given command line and call the given function + * for each line of the output. + * + * @param proc function to call for each line of the output + * @param proc_cls closure for proc + * @param timeout when to time out + * @param binary command to run + * @param ... arguments to command + * @return NULL on error */ -pid_t GNUNET_OS_start_process_v (const char *filename, char *const argv[]); +struct GNUNET_OS_CommandHandle * +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 - * @param proc process ID + * Retrieve the status of a process. Nonblocking 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_status (pid_t proc, enum GNUNET_OS_ProcessStatusType *type, - unsigned long *code); +int +GNUNET_OS_process_status (struct GNUNET_OS_Process *proc, + enum GNUNET_OS_ProcessStatusType *type, + unsigned long *code); /** - * Wait for a process - * @param proc process ID to wait for + * 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 of the process to wait for * @return GNUNET_OK on success, GNUNET_SYSERR otherwise */ -int GNUNET_OS_process_wait (pid_t proc); +int +GNUNET_OS_process_wait (struct GNUNET_OS_Process *proc); + + +/** + * Connects this process to its parent via pipe + */ +void +GNUNET_OS_install_parent_control_handler (void *cls, + const struct + GNUNET_SCHEDULER_TaskContext *tc); + + +/** + * Check whether an executable exists and possibly + * if the suid bit is set on the file. + * Attempts to find the file using the current + * PATH environment variable as a search path. + * + * @param binary the name of the file to check + * @return GNUNET_YES if the file is SUID, + * GNUNET_NO if not SUID (but binary exists) + * GNUNET_SYSERR on error (no such binary or not executable) + */ +int +GNUNET_OS_check_helper_binary (const char *binary); #if 0 /* keep Emacsens' auto-indent happy */