1 #ifndef foodexechfoo 2 #define foodexechfoo 3 4 /*** 5 This file is part of libdaemon. 6 7 Copyright 2003-2008 Lennart Poettering 8 9 Permission is hereby granted, free of charge, to any person obtaining a copy 10 of this software and associated documentation files (the "Software"), to deal 11 in the Software without restriction, including without limitation the rights 12 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 13 copies of the Software, and to permit persons to whom the Software is 14 furnished to do so, subject to the following conditions: 15 16 The above copyright notice and this permission notice shall be included in 17 all copies or substantial portions of the Software. 18 19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 22 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 23 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 25 SOFTWARE. 26 27 ***/ 28 29 #include <stdarg.h> 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 /** \file 36 * 37 * Contains a robust API for running sub processes with STDOUT and 38 * STDERR redirected to syslog 39 */ 40 41 /** This variable is defined to 1 iff daemon_exec() is supported. 42 * @since 0.4 43 * @see daemon_exec() */ 44 #define DAEMON_EXEC_AVAILABLE 1 45 46 #if defined(__GNUC__) && ! defined(DAEMON_GCC_SENTINEL) 47 #define DAEMON_GCC_SENTINEL __attribute__ ((sentinel)) 48 #else 49 /** A macro for making use of GCCs printf compilation warnings */ 50 #define DAEMON_GCC_SENTINEL 51 #endif 52 53 /** Run the specified executable with the specified arguments in the 54 * specified directory and return the return value of the program in 55 * the specified pointer. The calling process is blocked until the 56 * child finishes and all child output (either STDOUT or STDIN) has 57 * been written to syslog. Running this function requires that 58 * daemon_signal() has been called with SIGCHLD as argument. 59 * 60 * @param dir Working directory for the process. 61 * @param ret A pointer to an integer to write the return value of the program to. 62 * @param prog The path to the executable 63 * @param ... The arguments to be passed to the program, followed by a (char *) NULL 64 * @return Nonzero on failure, zero on success 65 * @since 0.4 66 * @see DAEMON_EXEC_AVAILABLE 67 */ 68 int daemon_exec(const char *dir, int *ret, const char *prog, ...) DAEMON_GCC_SENTINEL; 69 70 /** This variable is defined to 1 iff daemon_execv() is supported. 71 * @since 0.11 72 * @see daemon_execv() */ 73 #define DAEMON_EXECV_AVAILABLE 1 74 75 /** The same as daemon_exec, but without variadic arguments 76 * @since 0.11 77 * @see DAEMON_EXECV_AVAILABLE */ 78 int daemon_execv(const char *dir, int *ret, const char *prog, va_list ap); 79 80 #ifdef __cplusplus 81 } 82 #endif 83 84 #endif 85
