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authorEric Wong <normalperson@yhbt.net>2006-07-30 23:32:47 +0000
committerEric Wong <normalperson@yhbt.net>2006-07-30 23:32:47 +0000
commit12aec5738b8333a0dd676871bbfb6d6762ea87a5 (patch)
treeb2bb99e19e6a771f01bb465f38f4d878d6a9d805
parent381d7232a0d63c0a145fae5e2c40e577ff2f44f1 (diff)
downloadmpd-12aec5738b8333a0dd676871bbfb6d6762ea87a5.tar.gz
mpd-12aec5738b8333a0dd676871bbfb6d6762ea87a5.tar.xz
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Standardize state_file handling routines.
This way it's easier to manage and extend. git-svn-id: https://svn.musicpd.org/mpd/trunk@4494 09075e82-0dd4-0310-85a5-a0d7c8717e4f
-rw-r--r--src/Makefile.am2
-rw-r--r--src/audio.c48
-rw-r--r--src/audio.h4
-rw-r--r--src/main.c7
-rw-r--r--src/playlist.c282
-rw-r--r--src/playlist.h6
-rw-r--r--src/state_file.c112
-rw-r--r--src/state_file.h30
-rw-r--r--src/utils.h2
9 files changed, 261 insertions, 232 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 3c5d46990..1dfcd476e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -64,6 +64,7 @@ mpd_headers = \
sig_handlers.h \
sllist.h \
song.h \
+ state_file.h \
stats.h \
tag.h \
tagTracker.h \
@@ -111,6 +112,7 @@ mpd_SOURCES = \
signal_check.c \
sllist.c \
song.c \
+ state_file.c \
stats.c \
tag.c \
tagTracker.c \
diff --git a/src/audio.c b/src/audio.c
index 8ecae5ec3..b4f0dadc3 100644
--- a/src/audio.c
+++ b/src/audio.c
@@ -25,6 +25,7 @@
#include "playerData.h"
#include "utils.h"
#include "playlist.h"
+#include "state_file.h"
#include <stdlib.h>
#include <string.h>
@@ -462,32 +463,19 @@ void printAudioDevices(int fd)
}
}
-void saveAudioDevicesState(void)
+void saveAudioDevicesState(FILE *fp)
{
- char *stateFile;
- FILE *fp;
int i;
- if (!(stateFile = getStateFile()))
- return;
-
- while (!(fp = fopen(stateFile, "a")) && errno == EINTR) ;
- if (!fp) {
- ERROR("problems opening state file \"%s\" for "
- "writing: %s\n", stateFile, strerror(errno));
- return;
- }
-
assert(audioOutputArraySize != 0);
for (i = 0; i < audioOutputArraySize; i++) {
fprintf(fp, AUDIO_DEVICE_STATE "%d:%s\n",
- (int)pdAudioDevicesEnabled[i],
- audioOutputArray[i]->name);
+ (int)pdAudioDevicesEnabled[i],
+ audioOutputArray[i]->name);
}
- while (fclose(fp) && errno == EINTR) ;
}
-static void parse_audio_device_state(FILE * fp)
+void readAudioDevicesState(FILE *fp)
{
char buffer[AUDIO_BUFFER_SIZE];
int i;
@@ -521,29 +509,3 @@ static void parse_audio_device_state(FILE * fp)
}
}
-void readAudioDevicesState(void)
-{
- char *stateFile;
- FILE *fp;
- struct stat st;
-
- if (!(stateFile = getStateFile()))
- return;
- if (stat(stateFile, &st) < 0) {
- DEBUG("failed to stat state file\n");
- return;
- }
- if (!S_ISREG(st.st_mode)) {
- ERROR("state file \"%s\" is not a regular file\n", stateFile);
- exit(EXIT_FAILURE);
- }
-
- fp = fopen(stateFile, "r");
- if (!fp) {
- ERROR("problems opening state file \"%s\" for "
- "reading: %s\n", stateFile, strerror(errno));
- exit(EXIT_FAILURE);
- }
- parse_audio_device_state(fp);
- fclose(fp);
-}
diff --git a/src/audio.h b/src/audio.h
index 29309b9ce..70cc551fd 100644
--- a/src/audio.h
+++ b/src/audio.h
@@ -75,9 +75,9 @@ int disableAudioDevice(int fd, int device);
void printAudioDevices(int fd);
-void readAudioDevicesState();
+void readAudioDevicesState(FILE *fp);
-void saveAudioDevicesState();
+void saveAudioDevicesState(FILE *fp);
void loadAudioDrivers();
#endif
diff --git a/src/main.c b/src/main.c
index 67ae0f76b..3ba2afeb4 100644
--- a/src/main.c
+++ b/src/main.c
@@ -35,6 +35,7 @@
#include "inputPlugin.h"
#include "audioOutput.h"
#include "inputStream.h"
+#include "state_file.h"
#include "tag.h"
#include "tagTracker.h"
#include "dbUtils.h"
@@ -346,7 +347,6 @@ static void startMainProcess(void)
if (pid > 0) {
initInputStream();
initReplayGainState();
- readAudioDevicesState();
/* free stuff we don't need */
freeAllListenSockets();
@@ -581,7 +581,7 @@ int main(int argc, char *argv[])
my_usleep(1);
openVolumeDevice();
- readPlaylistState();
+ read_state_file();
while (COMMAND_RETURN_KILL != doIOForInterfaces()) {
if (COMMAND_RETURN_KILL == handlePendingSignals())
@@ -591,8 +591,7 @@ int main(int argc, char *argv[])
readDirectoryDBIfUpdateIsFinished();
}
- savePlaylistState();
- saveAudioDevicesState();
+ write_state_file();
freeAllInterfaces();
closeAllListenSockets();
diff --git a/src/playlist.c b/src/playlist.c
index 64350d471..359e3ac24 100644
--- a/src/playlist.c
+++ b/src/playlist.c
@@ -27,6 +27,7 @@
#include "path.h"
#include "utils.h"
#include "sig_handlers.h"
+#include "state_file.h"
#include <string.h>
#include <stdlib.h>
@@ -92,16 +93,6 @@ static void swapOrder(int a, int b);
static int playPlaylistOrderNumber(int fd, int orderNum);
static void randomizeOrder(int start, int end);
-char *getStateFile(void)
-{
- ConfigParam *param = parseConfigFilePath(CONF_STATE_FILE, 0);
-
- if (!param)
- return NULL;
-
- return param->value;
-}
-
static void incrPlaylistVersion(void)
{
static unsigned long max = ((mpd_uint32) 1 << 31) - 1;
@@ -256,208 +247,141 @@ int showPlaylist(int fd)
return 0;
}
-void savePlaylistState(void)
+void savePlaylistState(FILE *fp)
{
- char *stateFile = getStateFile();
-
- if (stateFile) {
- FILE *fp;
-
- while (!(fp = fopen(stateFile, "w")) && errno == EINTR) ;
- if (!fp) {
- ERROR("problems opening state file \"%s\" for "
- "writing: %s\n", stateFile, strerror(errno));
- return;
- }
-
- fprintf(fp, "%s", PLAYLIST_STATE_FILE_STATE);
- switch (playlist_state) {
- case PLAYLIST_STATE_PLAY:
- switch (getPlayerState()) {
- case PLAYER_STATE_PAUSE:
- fprintf(fp, "%s\n",
- PLAYLIST_STATE_FILE_STATE_PAUSE);
- break;
- default:
- fprintf(fp, "%s\n",
- PLAYLIST_STATE_FILE_STATE_PLAY);
- }
- fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_CURRENT,
- playlist.order[playlist.current]);
- fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_TIME,
- getPlayerElapsedTime());
+ fprintf(fp, "%s", PLAYLIST_STATE_FILE_STATE);
+ switch (playlist_state) {
+ case PLAYLIST_STATE_PLAY:
+ switch (getPlayerState()) {
+ case PLAYER_STATE_PAUSE:
+ fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_STATE_PAUSE);
break;
default:
- fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_STATE_STOP);
- break;
+ fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_STATE_PLAY);
}
- fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_RANDOM,
- playlist.random);
- fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_REPEAT,
- playlist.repeat);
- fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_CROSSFADE,
- (int)(getPlayerCrossFade()));
- fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_PLAYLIST_BEGIN);
- fflush(fp);
- showPlaylist(fileno(fp));
- fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_PLAYLIST_END);
-
- while (fclose(fp) && errno == EINTR) ;
+ fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_CURRENT,
+ playlist.order[playlist.current]);
+ fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_TIME,
+ getPlayerElapsedTime());
+ break;
+ default:
+ fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_STATE_STOP);
+ break;
}
+ fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_RANDOM, playlist.random);
+ fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_REPEAT, playlist.repeat);
+ fprintf(fp, "%s%i\n", PLAYLIST_STATE_FILE_CROSSFADE,
+ (int)(getPlayerCrossFade()));
+ fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_PLAYLIST_BEGIN);
+ fflush(fp);
+ showPlaylist(fileno(fp));
+ fprintf(fp, "%s\n", PLAYLIST_STATE_FILE_PLAYLIST_END);
}
-void loadPlaylistFromStateFile(FILE *fp, char *buffer, int state, int current,
- int time)
+static void loadPlaylistFromStateFile(FILE *fp, char *buffer,
+ int state, int current, int time)
{
char *temp;
int song;
- char *stateFile = getStateFile();
- if (!myFgets(buffer, PLAYLIST_BUFFER_SIZE, fp)) {
- ERROR("error parsing state file \"%s\"\n", stateFile);
- exit(EXIT_FAILURE);
- }
+ if (!myFgets(buffer, PLAYLIST_BUFFER_SIZE, fp))
+ state_file_fatal();
while (strcmp(buffer, PLAYLIST_STATE_FILE_PLAYLIST_END)) {
song = atoi(strtok(buffer, ":"));
- if (!(temp = strtok(NULL, ""))) {
- ERROR("error parsing state file \"%s\"\n", stateFile);
- exit(EXIT_FAILURE);
- }
+ if (!(temp = strtok(NULL, "")))
+ state_file_fatal();
if (!addToPlaylist(STDERR_FILENO, temp, 0) && current == song) {
if (state != PLAYER_STATE_STOP) {
playPlaylist(STDERR_FILENO,
- playlist.length - 1, 0);
+ playlist.length - 1, 0);
}
if (state == PLAYER_STATE_PAUSE) {
playerPause(STDERR_FILENO);
}
if (state != PLAYER_STATE_STOP) {
seekSongInPlaylist(STDERR_FILENO,
- playlist.length - 1,
- time);
+ playlist.length - 1, time);
}
}
- if (!myFgets(buffer, PLAYLIST_BUFFER_SIZE, fp)) {
- ERROR("error parsing state file \"%s\"\n", stateFile);
- exit(EXIT_FAILURE);
- }
+ if (!myFgets(buffer, PLAYLIST_BUFFER_SIZE, fp))
+ state_file_fatal();
}
}
-void readPlaylistState(void)
+void readPlaylistState(FILE *fp)
{
- char *stateFile = getStateFile();
-
- if (stateFile) {
- FILE *fp;
- struct stat st;
- int current = -1;
- int time = 0;
- int state = PLAYER_STATE_STOP;
- char buffer[PLAYLIST_BUFFER_SIZE];
-
- if (stat(stateFile, &st) < 0) {
- DEBUG("failed to stat state file\n");
- return;
- }
- if (!S_ISREG(st.st_mode)) {
- ERROR("state file \"%s\" is not a regular "
- "file\n", stateFile);
- exit(EXIT_FAILURE);
- }
+ int current = -1;
+ int time = 0;
+ int state = PLAYER_STATE_STOP;
+ char buffer[PLAYLIST_BUFFER_SIZE];
- fp = fopen(stateFile, "r");
- if (!fp) {
- ERROR("problems opening state file \"%s\" for "
- "reading: %s\n", stateFile, strerror(errno));
- exit(EXIT_FAILURE);
- }
-
- while (myFgets(buffer, PLAYLIST_BUFFER_SIZE, fp)) {
- if (strncmp(buffer, PLAYLIST_STATE_FILE_STATE,
- strlen(PLAYLIST_STATE_FILE_STATE)) == 0) {
- if (strcmp(&(buffer
- [strlen
- (PLAYLIST_STATE_FILE_STATE)]),
- PLAYLIST_STATE_FILE_STATE_PLAY) ==
- 0) {
- state = PLAYER_STATE_PLAY;
- } else if (strcmp(&(buffer
- [strlen
- (PLAYLIST_STATE_FILE_STATE)]),
- PLAYLIST_STATE_FILE_STATE_PAUSE)
- == 0) {
- state = PLAYER_STATE_PAUSE;
- }
- } else if (strncmp(buffer, PLAYLIST_STATE_FILE_TIME,
- strlen(PLAYLIST_STATE_FILE_TIME)) ==
- 0) {
- time =
- atoi(&
- (buffer
- [strlen(PLAYLIST_STATE_FILE_TIME)]));
- } else
- if (strncmp
- (buffer, PLAYLIST_STATE_FILE_REPEAT,
- strlen(PLAYLIST_STATE_FILE_REPEAT)) == 0) {
- if (strcmp
- (&
- (buffer
- [strlen(PLAYLIST_STATE_FILE_REPEAT)]),
- "1") == 0) {
- setPlaylistRepeatStatus(STDERR_FILENO,
- 1);
- } else
- setPlaylistRepeatStatus(STDERR_FILENO,
- 0);
+ while (myFgets(buffer, PLAYLIST_BUFFER_SIZE, fp)) {
+ if (strncmp(buffer, PLAYLIST_STATE_FILE_STATE,
+ strlen(PLAYLIST_STATE_FILE_STATE)) == 0) {
+ if (strcmp(&(buffer[strlen(PLAYLIST_STATE_FILE_STATE)]),
+ PLAYLIST_STATE_FILE_STATE_PLAY) == 0) {
+ state = PLAYER_STATE_PLAY;
} else
- if (strncmp
- (buffer, PLAYLIST_STATE_FILE_CROSSFADE,
- strlen(PLAYLIST_STATE_FILE_CROSSFADE)) == 0) {
- setPlayerCrossFade(atoi
- (&
- (buffer
- [strlen
- (PLAYLIST_STATE_FILE_CROSSFADE)])));
+ if (strcmp
+ (&(buffer[strlen(PLAYLIST_STATE_FILE_STATE)]),
+ PLAYLIST_STATE_FILE_STATE_PAUSE)
+ == 0) {
+ state = PLAYER_STATE_PAUSE;
+ }
+ } else if (strncmp(buffer, PLAYLIST_STATE_FILE_TIME,
+ strlen(PLAYLIST_STATE_FILE_TIME)) == 0) {
+ time =
+ atoi(&(buffer[strlen(PLAYLIST_STATE_FILE_TIME)]));
+ } else
+ if (strncmp
+ (buffer, PLAYLIST_STATE_FILE_REPEAT,
+ strlen(PLAYLIST_STATE_FILE_REPEAT)) == 0) {
+ if (strcmp
+ (&(buffer[strlen(PLAYLIST_STATE_FILE_REPEAT)]),
+ "1") == 0) {
+ setPlaylistRepeatStatus(STDERR_FILENO, 1);
} else
- if (strncmp
- (buffer, PLAYLIST_STATE_FILE_RANDOM,
- strlen(PLAYLIST_STATE_FILE_RANDOM)) == 0) {
- if (strcmp
- (&
- (buffer
- [strlen(PLAYLIST_STATE_FILE_RANDOM)]),
- "1") == 0) {
- setPlaylistRandomStatus(STDERR_FILENO,
- 1);
- } else
- setPlaylistRandomStatus(STDERR_FILENO,
- 0);
- } else if (strncmp(buffer, PLAYLIST_STATE_FILE_CURRENT,
- strlen(PLAYLIST_STATE_FILE_CURRENT))
- == 0) {
- if (strlen(buffer) ==
- strlen(PLAYLIST_STATE_FILE_CURRENT)) {
- ERROR("error parsing state "
- "file \"%s\"\n", stateFile);
- exit(EXIT_FAILURE);
- }
- current = atoi(&(buffer
- [strlen
- (PLAYLIST_STATE_FILE_CURRENT)]));
+ setPlaylistRepeatStatus(STDERR_FILENO, 0);
+ } else
+ if (strncmp
+ (buffer, PLAYLIST_STATE_FILE_CROSSFADE,
+ strlen(PLAYLIST_STATE_FILE_CROSSFADE)) == 0) {
+ setPlayerCrossFade(atoi
+ (&
+ (buffer
+ [strlen
+ (PLAYLIST_STATE_FILE_CROSSFADE)])));
+ } else
+ if (strncmp
+ (buffer, PLAYLIST_STATE_FILE_RANDOM,
+ strlen(PLAYLIST_STATE_FILE_RANDOM)) == 0) {
+ if (strcmp
+ (&
+ (buffer
+ [strlen(PLAYLIST_STATE_FILE_RANDOM)]),
+ "1") == 0) {
+ setPlaylistRandomStatus(STDERR_FILENO, 1);
} else
- if (strncmp
- (buffer, PLAYLIST_STATE_FILE_PLAYLIST_BEGIN,
- strlen(PLAYLIST_STATE_FILE_PLAYLIST_BEGIN)
- ) == 0) {
- if (state == PLAYER_STATE_STOP)
- current = -1;
- loadPlaylistFromStateFile(fp, buffer, state,
- current, time);
- }
+ setPlaylistRandomStatus(STDERR_FILENO, 0);
+ } else if (strncmp(buffer, PLAYLIST_STATE_FILE_CURRENT,
+ strlen(PLAYLIST_STATE_FILE_CURRENT))
+ == 0) {
+ if (strlen(buffer) ==
+ strlen(PLAYLIST_STATE_FILE_CURRENT))
+ state_file_fatal();
+ current = atoi(&(buffer
+ [strlen
+ (PLAYLIST_STATE_FILE_CURRENT)]));
+ } else
+ if (strncmp
+ (buffer, PLAYLIST_STATE_FILE_PLAYLIST_BEGIN,
+ strlen(PLAYLIST_STATE_FILE_PLAYLIST_BEGIN)
+ ) == 0) {
+ if (state == PLAYER_STATE_STOP)
+ current = -1;
+ loadPlaylistFromStateFile(fp, buffer, state,
+ current, time);
}
-
- fclose(fp);
}
}
diff --git a/src/playlist.h b/src/playlist.h
index 25ed45dfb..837bff161 100644
--- a/src/playlist.h
+++ b/src/playlist.h
@@ -34,9 +34,9 @@ void initPlaylist();
void finishPlaylist();
-void readPlaylistState();
+void readPlaylistState(FILE *);
-void savePlaylistState();
+void savePlaylistState(FILE *);
int clearPlaylist(int fd);
@@ -116,6 +116,4 @@ int playlistChangesPosId(int fd, mpd_uint32 version);
int PlaylistInfo(int fd, char *utf8file, int detail);
-char *getStateFile();
-
#endif
diff --git a/src/state_file.c b/src/state_file.c
new file mode 100644
index 000000000..1307faa54
--- /dev/null
+++ b/src/state_file.c
@@ -0,0 +1,112 @@
+/* the Music Player Daemon (MPD)
+ * (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "../config.h"
+#include "state_file.h"
+#include "conf.h"
+#include "gcc.h"
+#include "log.h"
+#include "audio.h"
+#include "playlist.h"
+#include "utils.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+static struct _sf_cb {
+ void (*reader)(FILE *);
+ void (*writer)(FILE *);
+} sf_callbacks [] = {
+ { readAudioDevicesState, saveAudioDevicesState },
+ { readPlaylistState, savePlaylistState },
+};
+
+static const char *sfpath = NULL;
+
+static void get_state_file_path(void)
+{
+ ConfigParam *param;
+ if (sfpath)
+ return;
+ param = parseConfigFilePath(CONF_STATE_FILE, 0);
+ if (param)
+ sfpath = (const char *)param->value;
+}
+
+void write_state_file(void)
+{
+ int i;
+ FILE *fp;
+
+ if (!sfpath)
+ return;
+ while (!(fp = fopen(sfpath, "w")) && errno == EINTR);
+
+ if (mpd_unlikely(!fp)) {
+ ERROR("problems opening state file \"%s\" for writing: %s\n",
+ sfpath, strerror(errno));
+ return;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(sf_callbacks); i++)
+ sf_callbacks[i].writer(fp);
+
+ while(fclose(fp) && errno == EINTR) /* nothing */;
+}
+
+void read_state_file(void)
+{
+ struct stat st;
+ int i;
+ FILE *fp;
+
+ get_state_file_path();
+ if (!sfpath)
+ return;
+ if (stat(sfpath, &st) < 0) {
+ DEBUG("failed to stat state file: %s\n", sfpath);
+ return;
+ }
+ if (!S_ISREG(st.st_mode)) {
+ ERROR("state file \"%s\" is not a regular file\n", sfpath);
+ exit(EXIT_FAILURE);
+ }
+
+ while (!(fp = fopen(sfpath, "r")) && errno == EINTR);
+ if (mpd_unlikely(!fp)) {
+ ERROR("problems opening state file \"%s\" for reading: %s\n",
+ sfpath, strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ for (i = 0; i < ARRAY_SIZE(sf_callbacks); i++) {
+ sf_callbacks[i].reader(fp);
+ rewind(fp);
+ }
+
+ while(fclose(fp) && errno == EINTR) /* nothing */;
+}
+
+void mpd_noreturn state_file_fatal(void)
+{
+ ERROR("error parsing state file \"%s\"\n", sfpath);
+ exit(EXIT_FAILURE);
+}
+
diff --git a/src/state_file.h b/src/state_file.h
new file mode 100644
index 000000000..e717fbe87
--- /dev/null
+++ b/src/state_file.h
@@ -0,0 +1,30 @@
+/* the Music Player Daemon (MPD)
+ * (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef STATE_FILE_H
+#define STATE_FILE_H
+
+#include "gcc.h"
+
+#include <stdio.h>
+
+void write_state_file(void);
+void read_state_file(void);
+void mpd_noreturn state_file_fatal(void);
+
+#endif /* STATE_FILE_H */
diff --git a/src/utils.h b/src/utils.h
index bc16905ea..02f70e946 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -29,6 +29,8 @@
#include <sys/stat.h>
#include <fcntl.h>
+#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
+
char *myFgets(char *buffer, int bufferSize, FILE * fp);
char *strDupToUpper(char *str);