/* * log.c * * Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org> * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org> * * This program 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 of the License, or * (at your option) any later version. * * This program 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. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <stdio.h> #include <stdarg.h> #include <errno.h> /* libalpm */ #include "log.h" #include "handle.h" #include "util.h" #include "alpm.h" /** \addtogroup alpm_log Logging Functions * @brief Functions to log using libalpm * @{ */ /** A printf-like function for logging. * @param handle the context handle * @param fmt output format * @return 0 on success, -1 on error (pm_errno is set accordingly) */ int SYMEXPORT alpm_logaction(alpm_handle_t *handle, const char *fmt, ...) { int ret; va_list args; ASSERT(handle != NULL, return -1); /* check if the logstream is open already, opening it if needed */ if(handle->logstream == NULL) { handle->logstream = fopen(handle->logfile, "a"); /* if we couldn't open it, we have an issue */ if(handle->logstream == NULL) { if(errno == EACCES) { handle->pm_errno = ALPM_ERR_BADPERMS; } else if(errno == ENOENT) { handle->pm_errno = ALPM_ERR_NOT_A_DIR; } else { handle->pm_errno = ALPM_ERR_SYSTEM; } return -1; } } va_start(args, fmt); ret = _alpm_logaction(handle, fmt, args); va_end(args); /* TODO We should add a prefix to log strings depending on who called us. * If logaction was called by the frontend: * USER: <the frontend log> * and if called internally: * ALPM: <the library log> * Moreover, the frontend should be able to choose its prefix * (USER by default?): * pacman: "PACMAN" * kpacman: "KPACMAN" * This would allow us to share the log file between several frontends * and know who does what */ return ret; } /** @} */ void _alpm_log(alpm_handle_t *handle, alpm_loglevel_t flag, const char *fmt, ...) { va_list args; if(handle == NULL || handle->logcb == NULL) { return; } va_start(args, fmt); handle->logcb(flag, fmt, args); va_end(args); } /* vim: set ts=2 sw=2 noet: */