compiles, but not running properly

Makefile

@@ -1,6 +1,6 @@
 VERSION = 1.2.3
 
-CFLAGS += -O2 -Wall -Wextra -Wshadow -fanalyzer -fsanitize=undefined \
+CFLAGS += -O2 -g -Wall -Wextra -Wshadow -fanalyzer -fsanitize=undefined \
 	-Wno-analyzer-file-leak\
 	-rdynamic -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -DVERSION=\"$(VERSION)\"\
 	`pkg-config --cflags-only-I gumbo libcurl fuse uuid expat`

src/cache.c

@@ -89,7 +89,7 @@ static char *CacheSystem_calc_dir(const char *url)
 
 void CacheSystem_init(const char *path, int url_supplied)
 {
-    if (pthread_mutex_init(&cf_lock, NULL)) {
+    if (pthread_mutex_lock(&cf_lock, NULL)) {
         lprintf(fatal, "cf_lock initialisation failed!\n");
     }
 
@@ -940,7 +940,7 @@ static void *Cache_bgdl(void *arg)
 
     uint8_t *recv_buf = CALLOC(cf->blksz, sizeof(uint8_t));
     lprintf(debug, "thread %x spawned.\n ", pthread_self());
-    long recv = path_download(cf->fs_path, (char *) recv_buf, cf->blksz,
+    long recv = Link_download(cf->link, (char *) recv_buf, cf->blksz,
                               cf->next_dl_offset);
     if (recv < 0) {
         lprintf(error, "thread %x received %ld bytes, \
@@ -1019,7 +1019,7 @@ Cache_read(Cache * cf, char *const output_buf, const off_t len,
 
     uint8_t *recv_buf = CALLOC(cf->blksz, sizeof(uint8_t));
     lprintf(debug, "thread %x: spawned.\n ", pthread_self());
-    long recv = path_download(cf->fs_path, (char *) recv_buf, cf->blksz,
+    long recv = Link_download(cf->link, (char *) recv_buf, cf->blksz,
                               dl_offset);
     if (recv < 0) {
         lprintf(error, "thread %x received %ld bytes, \

src/link.c

@@ -112,7 +112,7 @@ static void Link_req_file_stat(Link * this_link)
      * We need to put the variable on the heap, because otherwise the
      * variable gets popped from the stack as the function returns.
      *
-     * It gets freed in curl_multi_perform_once();
+     * It gets freed in curl_process_msgs();
      */
     TransferStruct *transfer = CALLOC(1, sizeof(TransferStruct));
 
@@ -435,10 +435,10 @@ void LinkTable_print(LinkTable * linktbl)
     }
 }
 
-TransferStruct Link_to_TransferStruct(Link * head_link)
+TransferStruct Link_download_full(Link * link)
 {
-    char *url = head_link->f_url;
+    char *url = link->f_url;
-    CURL *curl = Link_to_curl(head_link);
+    CURL *curl = Link_to_curl(link);
 
     TransferStruct buf;
     buf.size = 0;
@@ -468,7 +468,7 @@ TransferStruct Link_to_TransferStruct(Link * head_link)
     }
     while (HTTP_temp_failure(http_resp));
 
-    curl_easy_getinfo(curl, CURLINFO_FILETIME, &(head_link->time));
+    curl_easy_getinfo(curl, CURLINFO_FILETIME, &(link->time));
     curl_easy_cleanup(curl);
     return buf;
 }
@@ -494,7 +494,7 @@ LinkTable *LinkTable_new(const char *url)
     /*
      * start downloading the base URL
      */
-    TransferStruct buf = Link_to_TransferStruct(linktbl->links[0]);
+    TransferStruct buf = Link_download_full(linktbl->links[0]);
     if (buf.size == 0) {
         LinkTable_free(linktbl);
         return NULL;
@@ -793,23 +793,14 @@ Link *path_to_Link(const char *path)
 }
 
 long
-path_download(const char *path, char *output_buf, size_t req_size,
+Link_download(Link *link, char *output_buf, size_t req_size,
               off_t offset)
 {
-    if (!path) {
-        lprintf(fatal, "NULL path supplied\n");
-    }
-    Link *link;
-    link = path_to_Link(path);
-    if (!link) {
-        return -ENOENT;
-    }
-
     size_t start = offset;
     size_t end = start + req_size;
     char range_str[64];
     snprintf(range_str, sizeof(range_str), "%lu-%lu", start, end);
-    lprintf(debug, "%s: %s\n", path, range_str);
+    lprintf(debug, "%s: %s\n", link->linkname, range_str);
 
     TransferStruct buf;
     buf.size = 0;
@@ -866,3 +857,19 @@ range requests\n");
 
     return recv;
 }
+
+long
+path_download(const char *path, char *output_buf, size_t req_size,
+              off_t offset)
+{
+    if (!path) {
+        lprintf(fatal, "NULL path supplied\n");
+    }
+    Link *link;
+    link = path_to_Link(path);
+    if (!link) {
+        return -ENOENT;
+    }
+
+    return Link_download(link, output_buf, req_size, offset);
+}

src/link.h

@@ -33,6 +33,33 @@ typedef enum {
     DATA = 'd'
 } TransferType;
 
+/**
+ * \brief For storing transfer data and metadata 
+ */
+typedef struct {
+    /** \brief The array to store the data */
+    char *data;
+    /** \brief The size of the array */
+    size_t size;
+    /** \brief The minium requested size */
+    size_t min_req_size;
+    /** \brief The type of transfer being done */
+    TransferType type;
+    /** \brief Whether transfer is in progress */
+    int transferring;
+    /** \brief The link associated with the transfer */
+    Link *link;
+} TransferStruct;
+
+/**
+ * \brief link table type
+ * \details index 0 contains the Link for the base URL
+ */
+struct LinkTable {
+    int num;
+    Link **links;
+};
+
 /**
  * \brief Link type data structure
  */
@@ -51,35 +78,12 @@ struct Link {
     long time;
     /** \brief The pointer associated with the cache file */
     Cache *cache_ptr;
+    /** \brief The pointer associated with the transfer struct */
+    TransferStruct *ts_ptr;
     /** \brief Stores *sonic related data */
     Sonic sonic;
 };
 
-/**
- * \brief link table type
- * \details index 0 contains the Link for the base URL
- */
-struct LinkTable {
-    int num;
-    Link **links;
-};
-
-/** \brief For storing transfer data */
-typedef struct {
-    /** \brief The array to store the data */
-    char *data;
-    /** \brief The size of the array */
-    size_t size;
-    /** \brief The minium requested size */
-    size_t min_req_size;
-    /** \brief The type of transfer being done */
-    TransferType type;
-    /** \brief Whether transfer is in progress */
-    int transferring;
-    /** \brief The link associated with the transfer */
-    Link *link;
-} TransferStruct;
-
 /**
  * \brief root link table
  */
@@ -106,12 +110,18 @@ void Link_set_file_stat(Link * this_link, CURL * curl);
 LinkTable *LinkTable_new(const char *url);
 
 /**
- * \brief download a link
+ * \brief download a path
  * \return the number of bytes downloaded
  */
 long path_download(const char *path, char *output_buf, size_t size,
                    off_t offset);
 
+/**
+ * \brief Download a Link
+ * \return the number of bytes downloaded
+ */
+long Link_download(Link *link, char *output_buf, size_t req_size, off_t offset);
+
 /**
  * \brief find the link associated with a path
  */
@@ -136,7 +146,7 @@ LinkTable *LinkTable_disk_open(const char *dirn);
  * \brief Download a link's content to the memory
  * \warning You MUST free the memory field in TransferStruct after use!
  */
-TransferStruct Link_to_TransferStruct(Link * head_link);
+TransferStruct Link_download_full(Link * head_link);
 
 /**
  * \brief Allocate a LinkTable

src/log.h

@@ -18,7 +18,7 @@ typedef enum {
 /**
  * \brief The default log level
  */
-#define DEFAULT_LOG_LEVEL fatal | error | warning | info | debug
+#define DEFAULT_LOG_LEVEL fatal | error | warning | info | debug | cache_lock_debug
 
 /**
  * \brief Get the log level from the environment.

src/main.c

@@ -163,9 +163,9 @@ void parse_config_file(char ***argv, int *argc)
                 }
             }
         }
+        fclose(config);
     }
     FREE(full_path);
-    fclose(config);
 }
 
 static int

src/sonic.c

@@ -332,7 +332,7 @@ static LinkTable *sonic_url_to_LinkTable(const char *url,
     /*
      * start downloading the base URL
      */
-    TransferStruct xml = Link_to_TransferStruct(linktbl->links[0]);
+    TransferStruct xml = Link_download_full(linktbl->links[0]);
     if (xml.size == 0) {
         LinkTable_free(linktbl);
         return NULL;