Fix documentation of check_filter_arg().

[paraslash.git] / afs.c

diff --git a/afs.c b/afs.c
index bd705050d328a23dda1b9610c3c5dd5d9dcb483d..016329841fe87255cdc68c1191e8661124c1c326 100644 (file)
--- a/afs.c
+++ b/afs.c
@@ -97,10 +97,11 @@ static char *current_mop; /* mode or playlist specifier. NULL means dummy mood *
 /**
  * A random number used to "authenticate" the connection.
  *
- * para_server picks this number by random before forking the afs process.  The
- * command handlers write this number together with the id of the shared memory
- * area containing the query. This way, a malicious local user has to know this
- * number to be able to cause the afs process to crash by sending fake queries.
+ * para_server picks this number by random before it forks the afs process. The
+ * command handlers know this number as well and write it to the afs socket,
+ * together with the id of the shared memory area which contains the payload of
+ * the afs command. A local process has to know this number to abuse the afs
+ * service provided by the local socket.
  */
 extern uint32_t afs_socket_cookie;
 
@@ -423,7 +424,7 @@ static int pass_afd(int fd, char *buf, size_t size)
 {
        struct msghdr msg = {.msg_iov = NULL};
        struct cmsghdr *cmsg;
-       char control[255];
+       char control[255] __a_aligned(8);
        int ret;
        struct iovec iov;
 
@@ -496,12 +497,11 @@ no_admissible_files:
 }
 
 /* Never fails if arg == NULL */
-static int activate_mood_or_playlist(char *arg, int *num_admissible)
+static int activate_mood_or_playlist(const char *arg, int *num_admissible)
 {
        enum play_mode mode;
        int ret;
 
-       PARA_INFO_LOG("new playlist: %s\n", arg);
        if (!arg) {
                ret = change_current_mood(NULL); /* always successful */
                mode = PLAY_MODE_MOOD;
@@ -590,7 +590,7 @@ static void flush_and_free_pb(struct para_buffer *pb)
 
 static int com_select_callback(struct afs_callback_arg *aca)
 {
-       char *arg = aca->query.data;
+       const char *arg = aca->query.data;
        int num_admissible, ret;
 
        ret = clear_score_table();
@@ -649,7 +649,7 @@ static int setup_command_socket_or_die(void)
        ret = create_local_socket(socket_name, 0);
        if (ret < 0) {
                ret = create_local_socket(socket_name,
-                       S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IWOTH);
+                       S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IROTH);
                if (ret < 0) {
                        PARA_EMERG_LOG("%s: %s\n", para_strerror(-ret),
                                socket_name);
@@ -693,7 +693,7 @@ static int make_database_dir(void)
 
        get_database_dir();
        ret = para_mkdir(database_dir, 0777);
-       if (ret >= 0 || is_errno(-ret, EEXIST))
+       if (ret >= 0 || ret == -ERRNO_TO_PARA_ERROR(EEXIST))
                return 1;
        return ret;
 }