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-rw-r--r--src/command.c4
-rw-r--r--src/database.c4
-rw-r--r--src/database.h3
-rw-r--r--src/db/simple_db_plugin.c13
-rw-r--r--src/db_save.c3
-rw-r--r--src/directory.c35
-rw-r--r--src/directory.h21
-rw-r--r--src/song_sticker.h2
-rw-r--r--src/update_walk.c68
9 files changed, 127 insertions, 26 deletions
diff --git a/src/command.c b/src/command.c
index e6bf36ac9..9810049ea 100644
--- a/src/command.c
+++ b/src/command.c
@@ -45,6 +45,7 @@
#include "db_error.h"
#include "db_print.h"
#include "db_selection.h"
+#include "db_lock.h"
#include "tag.h"
#include "client.h"
#include "client_idle.h"
@@ -1892,8 +1893,10 @@ handle_sticker_song(struct client *client, int argc, char *argv[])
.name = argv[4],
};
+ db_lock();
directory = db_get_directory(argv[3]);
if (directory == NULL) {
+ db_unlock();
command_error(client, ACK_ERROR_NO_EXIST,
"no such directory");
return COMMAND_RETURN_ERROR;
@@ -1901,6 +1904,7 @@ handle_sticker_song(struct client *client, int argc, char *argv[])
success = sticker_song_find(directory, data.name,
sticker_song_find_print_cb, &data);
+ db_unlock();
if (!success) {
command_error(client, ACK_ERROR_SYSTEM,
"failed to set search sticker database");
diff --git a/src/database.c b/src/database.c
index 9c4d90a2b..8c903bb45 100644
--- a/src/database.c
+++ b/src/database.c
@@ -92,7 +92,9 @@ db_get_directory(const char *name)
if (name == NULL)
return music_root;
- return directory_lookup_directory(music_root, name);
+ struct directory *directory =
+ directory_lookup_directory(music_root, name);
+ return directory;
}
struct song *
diff --git a/src/database.h b/src/database.h
index 33f503652..9c50bb15e 100644
--- a/src/database.h
+++ b/src/database.h
@@ -50,6 +50,9 @@ db_finish(void);
struct directory *
db_get_root(void);
+/**
+ * Caller must lock the #db_mutex.
+ */
gcc_nonnull(1)
struct directory *
db_get_directory(const char *name);
diff --git a/src/db/simple_db_plugin.c b/src/db/simple_db_plugin.c
index 816f4503b..f11090828 100644
--- a/src/db/simple_db_plugin.c
+++ b/src/db/simple_db_plugin.c
@@ -59,7 +59,11 @@ simple_db_lookup_directory(const struct simple_db *db, const char *uri)
assert(db->root != NULL);
assert(uri != NULL);
- return directory_lookup_directory(db->root, uri);
+ db_lock();
+ struct directory *directory =
+ directory_lookup_directory(db->root, uri);
+ db_unlock();
+ return directory;
}
static struct db *
@@ -236,7 +240,9 @@ simple_db_get_song(struct db *_db, const char *uri, GError **error_r)
assert(db->root != NULL);
+ db_lock();
struct song *song = directory_lookup_song(db->root, uri);
+ db_unlock();
if (song == NULL)
g_set_error(error_r, db_quark(), DB_NOT_FOUND,
"No such song: %s", uri);
@@ -301,13 +307,16 @@ simple_db_save(struct db *_db, GError **error_r)
struct simple_db *db = (struct simple_db *)_db;
struct directory *music_root = db->root;
+ db_lock();
+
g_debug("removing empty directories from DB");
directory_prune_empty(music_root);
g_debug("sorting DB");
-
directory_sort(music_root);
+ db_unlock();
+
g_debug("writing DB");
FILE *fp = fopen(db->path, "w");
diff --git a/src/db_save.c b/src/db_save.c
index 00967f4f2..4af9d58b8 100644
--- a/src/db_save.c
+++ b/src/db_save.c
@@ -19,6 +19,7 @@
#include "config.h"
#include "db_save.h"
+#include "db_lock.h"
#include "directory.h"
#include "directory_save.h"
#include "song.h"
@@ -169,7 +170,9 @@ db_load_internal(FILE *fp, struct directory *music_root, GError **error)
g_debug("reading DB");
+ db_lock();
success = directory_load(fp, music_root, buffer, error);
+ db_unlock();
g_string_free(buffer, true);
return success;
diff --git a/src/directory.c b/src/directory.c
index d39407c0c..29991e60d 100644
--- a/src/directory.c
+++ b/src/directory.c
@@ -74,13 +74,11 @@ directory_free(struct directory *directory)
void
directory_delete(struct directory *directory)
{
+ assert(holding_db_lock());
assert(directory != NULL);
assert(directory->parent != NULL);
- db_lock();
list_del(&directory->siblings);
- db_unlock();
-
directory_free(directory);
}
@@ -93,6 +91,7 @@ directory_get_name(const struct directory *directory)
struct directory *
directory_new_child(struct directory *parent, const char *name_utf8)
{
+ assert(holding_db_lock());
assert(parent != NULL);
assert(name_utf8 != NULL);
assert(*name_utf8 != 0);
@@ -111,32 +110,28 @@ directory_new_child(struct directory *parent, const char *name_utf8)
struct directory *directory = directory_new(path_utf8, parent);
g_free(allocated);
- db_lock();
- list_add_tail(&directory->siblings, &parent->children);
- db_unlock();
+ list_add(&directory->siblings, &parent->children);
return directory;
}
struct directory *
directory_get_child(const struct directory *directory, const char *name)
{
- db_lock();
+ assert(holding_db_lock());
struct directory *child;
- directory_for_each_child(child, directory) {
- if (strcmp(directory_get_name(child), name) == 0) {
- db_unlock();
+ directory_for_each_child(child, directory)
+ if (strcmp(directory_get_name(child), name) == 0)
return child;
- }
- }
- db_unlock();
return NULL;
}
void
directory_prune_empty(struct directory *directory)
{
+ assert(holding_db_lock());
+
struct directory *child, *n;
directory_for_each_child_safe(child, n, directory) {
directory_prune_empty(child);
@@ -149,12 +144,14 @@ directory_prune_empty(struct directory *directory)
struct directory *
directory_lookup_directory(struct directory *directory, const char *uri)
{
+ assert(holding_db_lock());
assert(uri != NULL);
if (isRootDirectory(uri))
return directory;
char *duplicated = g_strdup(uri), *name = duplicated;
+
while (1) {
char *slash = strchr(name, '/');
if (slash == name) {
@@ -201,21 +198,18 @@ directory_remove_song(G_GNUC_UNUSED struct directory *directory,
struct song *
directory_get_song(const struct directory *directory, const char *name_utf8)
{
+ assert(holding_db_lock());
assert(directory != NULL);
assert(name_utf8 != NULL);
- db_lock();
struct song *song;
directory_for_each_song(song, directory) {
assert(song->parent == directory);
- if (strcmp(song->uri, name_utf8) == 0) {
- db_unlock();
+ if (strcmp(song->uri, name_utf8) == 0)
return song;
- }
}
- db_unlock();
return NULL;
}
@@ -224,6 +218,7 @@ directory_lookup_song(struct directory *directory, const char *uri)
{
char *duplicated, *base;
+ assert(holding_db_lock());
assert(directory != NULL);
assert(uri != NULL);
@@ -260,10 +255,10 @@ directory_cmp(G_GNUC_UNUSED void *priv,
void
directory_sort(struct directory *directory)
{
- db_lock();
+ assert(holding_db_lock());
+
list_sort(NULL, &directory->children, directory_cmp);
song_list_sort(&directory->songs);
- db_unlock();
struct directory *child;
directory_for_each_child(child, directory)
diff --git a/src/directory.h b/src/directory.h
index 5460cb46a..769260436 100644
--- a/src/directory.h
+++ b/src/directory.h
@@ -118,6 +118,8 @@ directory_free(struct directory *directory);
/**
* Remove this #directory object from its parent and free it. This
* must not be called with the root directory.
+ *
+ * Caller must lock the #db_mutex.
*/
void
directory_delete(struct directory *directory);
@@ -152,6 +154,9 @@ G_GNUC_PURE
const char *
directory_get_name(const struct directory *directory);
+/**
+ * Caller must lock the #db_mutex.
+ */
G_GNUC_PURE
struct directory *
directory_get_child(const struct directory *directory, const char *name);
@@ -159,6 +164,8 @@ directory_get_child(const struct directory *directory, const char *name);
/**
* Create a new #directory object as a child of the given one.
*
+ * Caller must lock the #db_mutex.
+ *
* @param parent the parent directory the new one will be added to
* @param name_utf8 the UTF-8 encoded name of the new sub directory
*/
@@ -169,6 +176,8 @@ directory_new_child(struct directory *parent, const char *name_utf8);
/**
* Look up a sub directory, and create the object if it does not
* exist.
+ *
+ * Caller must lock the #db_mutex.
*/
static inline struct directory *
directory_make_child(struct directory *directory, const char *name_utf8)
@@ -179,6 +188,9 @@ directory_make_child(struct directory *directory, const char *name_utf8)
return child;
}
+/**
+ * Caller must lock the #db_mutex.
+ */
void
directory_prune_empty(struct directory *directory);
@@ -209,6 +221,8 @@ directory_remove_song(struct directory *directory, struct song *song);
/**
* Look up a song in this directory by its name.
+ *
+ * Caller must lock the #db_mutex.
*/
G_GNUC_PURE
struct song *
@@ -217,6 +231,8 @@ directory_get_song(const struct directory *directory, const char *name_utf8);
/**
* Looks up a song by its relative URI.
*
+ * Caller must lock the #db_mutex.
+ *
* @param directory the parent (or grandparent, ...) directory
* @param uri the relative URI
* @return the song, or NULL if none was found
@@ -224,6 +240,11 @@ directory_get_song(const struct directory *directory, const char *name_utf8);
struct song *
directory_lookup_song(struct directory *directory, const char *uri);
+/**
+ * Sort all directory entries recursively.
+ *
+ * Caller must lock the #db_mutex.
+ */
void
directory_sort(struct directory *directory);
diff --git a/src/song_sticker.h b/src/song_sticker.h
index 43fe59dbd..20ae68ce9 100644
--- a/src/song_sticker.h
+++ b/src/song_sticker.h
@@ -68,6 +68,8 @@ sticker_song_get(const struct song *song);
* Finds stickers with the specified name below the specified
* directory.
*
+ * Caller must lock the #db_mutex.
+ *
* @param directory the base directory to search in
* @param name the name of the sticker
* @return true on success (even if no sticker was found), false on
diff --git a/src/update_walk.c b/src/update_walk.c
index 1d7f89c49..8b2df6ba7 100644
--- a/src/update_walk.c
+++ b/src/update_walk.c
@@ -20,6 +20,7 @@
#include "config.h" /* must be first for large file support */
#include "update_internal.h"
#include "database.h"
+#include "db_lock.h"
#include "exclude.h"
#include "directory.h"
#include "song.h"
@@ -89,6 +90,9 @@ directory_set_stat(struct directory *dir, const struct stat *st)
dir->have_stat = true;
}
+/**
+ * Caller must lock the #db_mutex.
+ */
static void
delete_song(struct directory *dir, struct song *del)
{
@@ -97,11 +101,15 @@ delete_song(struct directory *dir, struct song *del)
/* first, prevent traversers in main task from getting this */
directory_remove_song(dir, del);
+ db_unlock(); /* temporary unlock, because update_remove_song() blocks */
+
/* now take it out of the playlist (in the main_task) */
update_remove_song(del);
/* finally, all possible references gone, free it */
song_free(del);
+
+ db_lock();
}
static void
@@ -110,6 +118,8 @@ delete_directory(struct directory *directory);
/**
* Recursively remove all sub directories and songs from a directory,
* leaving an empty directory.
+ *
+ * Caller must lock the #db_mutex.
*/
static void
clear_directory(struct directory *directory)
@@ -127,6 +137,8 @@ clear_directory(struct directory *directory)
/**
* Recursively free a directory and all its contents.
+ *
+ * Caller must lock the #db_mutex.
*/
static void
delete_directory(struct directory *directory)
@@ -134,12 +146,14 @@ delete_directory(struct directory *directory)
assert(directory->parent != NULL);
clear_directory(directory);
+
directory_delete(directory);
}
static void
delete_name_in(struct directory *parent, const char *name)
{
+ db_lock();
struct directory *directory = directory_get_child(parent, name);
if (directory != NULL) {
@@ -153,6 +167,8 @@ delete_name_in(struct directory *parent, const char *name)
modified = true;
}
+ db_unlock();
+
playlist_vector_remove(&parent->playlists, name);
}
@@ -160,6 +176,8 @@ static void
remove_excluded_from_directory(struct directory *directory,
GSList *exclude_list)
{
+ db_lock();
+
struct directory *child, *n;
directory_for_each_child_safe(child, n, directory) {
char *name_fs = utf8_to_fs_charset(directory_get_name(child));
@@ -184,6 +202,8 @@ remove_excluded_from_directory(struct directory *directory,
g_free(name_fs);
}
+
+ db_unlock();
}
static bool
@@ -232,7 +252,10 @@ removeDeletedFromDirectory(struct directory *directory)
if (directory_exists(child))
continue;
+ db_lock();
delete_directory(child);
+ db_unlock();
+
modified = true;
}
@@ -242,7 +265,10 @@ removeDeletedFromDirectory(struct directory *directory)
struct stat st;
if ((path = map_song_fs(song)) == NULL ||
stat(path, &st) < 0 || !S_ISREG(st.st_mode)) {
+ db_lock();
delete_song(directory, song);
+ db_unlock();
+
modified = true;
}
@@ -344,8 +370,10 @@ update_archive_tree(struct directory *directory, char *name)
if (tmp) {
*tmp = 0;
//add dir is not there already
+ db_lock();
subdir = directory_make_child(directory, name);
subdir->device = DEVICE_INARCHIVE;
+ db_unlock();
//create directories first
update_archive_tree(subdir, tmp+1);
} else {
@@ -354,7 +382,9 @@ update_archive_tree(struct directory *directory, char *name)
return;
}
//add file
+ db_lock();
struct song *song = directory_get_song(directory, name);
+ db_unlock();
if (song == NULL) {
song = song_file_load(name, directory);
if (song != NULL) {
@@ -386,7 +416,9 @@ update_archive_file(struct directory *parent, const char *name,
struct directory *directory;
char *filepath;
+ db_lock();
directory = directory_get_child(parent, name);
+ db_unlock();
if (directory != NULL && directory->mtime == st->st_mtime &&
!walk_discard)
/* MPD has already scanned the archive, and it hasn't
@@ -409,10 +441,12 @@ update_archive_file(struct directory *parent, const char *name,
if (directory == NULL) {
g_debug("creating archive directory: %s", name);
+ db_lock();
directory = directory_new_child(parent, name);
/* mark this directory as archive (we use device for
this) */
directory->device = DEVICE_INARCHIVE;
+ db_unlock();
}
directory->mtime = st->st_mtime;
@@ -438,6 +472,8 @@ update_container_file( struct directory* directory,
char* vtrack = NULL;
unsigned int tnum = 0;
char* pathname = map_directory_child_fs(directory, name);
+
+ db_lock();
struct directory *contdir = directory_get_child(directory, name);
// directory exists already
@@ -454,6 +490,7 @@ update_container_file( struct directory* directory,
modified = true;
}
else {
+ db_unlock();
g_free(pathname);
return true;
}
@@ -462,6 +499,7 @@ update_container_file( struct directory* directory,
contdir = directory_make_child(directory, name);
contdir->mtime = st->st_mtime;
contdir->device = DEVICE_CONTAINER;
+ db_unlock();
while ((vtrack = plugin->container_scan(pathname, ++tnum)) != NULL)
{
@@ -489,7 +527,9 @@ update_container_file( struct directory* directory,
if (tnum == 1)
{
+ db_lock();
delete_directory(contdir);
+ db_unlock();
return false;
}
else
@@ -536,13 +576,19 @@ update_regular_file(struct directory *directory,
if ((plugin = decoder_plugin_from_suffix(suffix, false)) != NULL)
{
+ db_lock();
struct song *song = directory_get_song(directory, name);
+ db_unlock();
if (!directory_child_access(directory, name, R_OK)) {
g_warning("no read permissions on %s/%s",
directory_get_path(directory), name);
- if (song != NULL)
+ if (song != NULL) {
+ db_lock();
delete_song(directory, song);
+ db_unlock();
+ }
+
return;
}
@@ -552,8 +598,11 @@ update_regular_file(struct directory *directory,
{
if (update_container_file(directory, name, st, plugin))
{
- if (song != NULL)
+ if (song != NULL) {
+ db_lock();
delete_song(directory, song);
+ db_unlock();
+ }
return;
}
@@ -579,7 +628,9 @@ update_regular_file(struct directory *directory,
if (!song_file_update(song)) {
g_debug("deleting unrecognized file %s/%s",
directory_get_path(directory), name);
+ db_lock();
delete_song(directory, song);
+ db_unlock();
}
modified = true;
@@ -614,12 +665,18 @@ updateInDirectory(struct directory *directory,
if (inodeFoundInParent(directory, st->st_ino, st->st_dev))
return;
+ db_lock();
subdir = directory_make_child(directory, name);
+ db_unlock();
+
assert(directory == subdir->parent);
ret = updateDirectory(subdir, st);
- if (!ret)
+ if (!ret) {
+ db_lock();
delete_directory(subdir);
+ db_unlock();
+ }
} else {
g_debug("update: %s is not a directory, archive or music", name);
}
@@ -778,7 +835,9 @@ directory_make_child_checked(struct directory *parent, const char *name_utf8)
struct directory *directory;
struct stat st;
+ db_lock();
directory = directory_get_child(parent, name_utf8);
+ db_unlock();
if (directory != NULL)
return directory;
@@ -788,11 +847,14 @@ directory_make_child_checked(struct directory *parent, const char *name_utf8)
/* if we're adding directory paths, make sure to delete filenames
with potentially the same name */
+ db_lock();
struct song *conflicting = directory_get_song(parent, name_utf8);
if (conflicting)
delete_song(parent, conflicting);
directory = directory_new_child(parent, name_utf8);
+ db_unlock();
+
directory_set_stat(directory, &st);
return directory;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 06:49:37 +0000