diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Daemon.cxx | 24 | ||||
| -rw-r--r-- | src/PidFile.hxx | 66 |
2 files changed, 71 insertions, 19 deletions
diff --git a/src/Daemon.cxx b/src/Daemon.cxx index 2425e74c4..f11a6e547 100644 --- a/src/Daemon.cxx +++ b/src/Daemon.cxx @@ -23,9 +23,9 @@ #include "fs/AllocatedPath.hxx" #include "fs/FileSystem.hxx" #include "util/Domain.hxx" +#include "PidFile.hxx" #include "Log.hxx" -#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> @@ -164,28 +164,14 @@ daemonize_detach(void) void daemonize(bool detach) { - FILE *fp = nullptr; - - if (!pidfile.IsNull()) { - /* do this before daemon'izing so we can fail gracefully if we can't - * write to the pid file */ - LogDebug(daemon_domain, "opening pid file"); - fp = FOpen(pidfile, "w+"); - if (!fp) { - const std::string utf8 = pidfile.ToUTF8(); - FormatFatalSystemError("Failed to create pid file \"%s\"", - pidfile.c_str()); - } - } + /* do this before daemon'izing so we can fail gracefully if we + can't write to the pid file */ + PidFile pidfile2(pidfile); if (detach) daemonize_detach(); - if (!pidfile.IsNull()) { - LogDebug(daemon_domain, "writing pid file"); - fprintf(fp, "%lu\n", (unsigned long)getpid()); - fclose(fp); - } + pidfile2.Write(); } void diff --git a/src/PidFile.hxx b/src/PidFile.hxx new file mode 100644 index 000000000..cd9c38d43 --- /dev/null +++ b/src/PidFile.hxx @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.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, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_PID_FILE_HXX +#define MPD_PID_FILE_HXX + +#include "fs/FileSystem.hxx" +#include "fs/AllocatedPath.hxx" +#include "Log.hxx" + +#include <assert.h> +#include <stdio.h> +#include <sys/types.h> +#include <unistd.h> + +class PidFile { + FILE *file; + +public: + PidFile(const AllocatedPath &path):file(nullptr) { + if (path.IsNull()) + return; + + file = FOpen(path, "w+"); + if (file == nullptr) { + const std::string utf8 = path.ToUTF8(); + FormatFatalSystemError("Failed to create pid file \"%s\"", + path.c_str()); + } + } + + PidFile(const PidFile &) = delete; + + void Write(pid_t pid) { + if (file == nullptr) + return; + + fprintf(file, "%lu\n", (unsigned long)pid); + fclose(file); + } + + void Write() { + if (file == nullptr) + return; + + Write(getpid()); + } +}; + +#endif |