fsck: treat a NUL in a tag header as an error

diff --git a/run-command.c b/run-command.c
index e09275bd9e360ee7683ef5d3753ccfe753ee8dcc..13fa452e8c3d5a5e20e24a969d53ce7ade4019bf 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -11,6 +11,12 @@ void child_process_init(struct child_process *child)
        argv_array_init(&child->env_array);
 }
 
+void child_process_clear(struct child_process *child)
+{
+       argv_array_clear(&child->args);
+       argv_array_clear(&child->env_array);
+}
+
 struct child_to_clean {
        pid_t pid;
        struct child_to_clean *next;
@@ -327,8 +333,7 @@ int start_command(struct child_process *cmd)
 fail_pipe:
                        error("cannot create %s pipe for %s: %s",
                                str, cmd->argv[0], strerror(failed_errno));
-                       argv_array_clear(&cmd->args);
-                       argv_array_clear(&cmd->env_array);
+                       child_process_clear(cmd);
                        errno = failed_errno;
                        return -1;
                }
@@ -513,8 +518,7 @@ int start_command(struct child_process *cmd)
                        close_pair(fderr);
                else if (cmd->err)
                        close(cmd->err);
-               argv_array_clear(&cmd->args);
-               argv_array_clear(&cmd->env_array);
+               child_process_clear(cmd);
                errno = failed_errno;
                return -1;
        }
@@ -540,8 +544,7 @@ int start_command(struct child_process *cmd)
 int finish_command(struct child_process *cmd)
 {
        int ret = wait_or_whine(cmd->pid, cmd->argv[0], 0);
-       argv_array_clear(&cmd->args);
-       argv_array_clear(&cmd->env_array);
+       child_process_clear(cmd);
        return ret;
 }
 
@@ -604,7 +607,7 @@ static NORETURN void die_async(const char *err, va_list params)
 {
        vreportf("fatal: ", err, params);
 
-       if (!pthread_equal(main_thread, pthread_self())) {
+       if (in_async()) {
                struct async *async = pthread_getspecific(async_key);
                if (async->proc_in >= 0)
                        close(async->proc_in);
@@ -623,6 +626,13 @@ static int async_die_is_recursing(void)
        return ret != NULL;
 }
 
+int in_async(void)
+{
+       if (!main_thread_set)
+               return 0; /* no asyncs started yet */
+       return !pthread_equal(main_thread, pthread_self());
+}
+
 #else
 
 static struct {
@@ -662,6 +672,12 @@ int git_atexit(void (*handler)(void))
 }
 #define atexit git_atexit
 
+static int process_is_async;
+int in_async(void)
+{
+       return process_is_async;
+}
+
 #endif
 
 int start_async(struct async *async)
@@ -721,6 +737,7 @@ int start_async(struct async *async)
                if (need_out)
                        close(fdout[0]);
                git_atexit_clear();
+               process_is_async = 1;
                exit(!!async->proc(proc_in, proc_out, async->data));
        }