add tests for rebasing root

diff --git a/run-command.c b/run-command.c
index 07e27ff4c829bf4e5dffbc61ac4f86f757e121c4..1b32a12a29b64fcc7d8b2401b00fb8a70ff81bad 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -273,7 +273,7 @@ int start_command(struct child_process *cmd)
 {
        int need_in, need_out, need_err;
        int fdin[2], fdout[2], fderr[2];
-       int failed_errno = failed_errno;
+       int failed_errno;
        char *str;
 
        /*
@@ -341,6 +341,7 @@ int start_command(struct child_process *cmd)
                notify_pipe[0] = notify_pipe[1] = -1;
 
        cmd->pid = fork();
+       failed_errno = errno;
        if (!cmd->pid) {
                /*
                 * Redirect the channel to write syscall error messages to
@@ -420,7 +421,7 @@ int start_command(struct child_process *cmd)
        }
        if (cmd->pid < 0)
                error("cannot fork() for %s: %s", cmd->argv[0],
-                       strerror(failed_errno = errno));
+                       strerror(errno));
        else if (cmd->clean_on_exit)
                mark_child_for_cleanup(cmd->pid);
 
@@ -587,6 +588,7 @@ int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const
 static pthread_t main_thread;
 static int main_thread_set;
 static pthread_key_t async_key;
+static pthread_key_t async_die_counter;
 
 static void *run_thread(void *data)
 {
@@ -613,6 +615,14 @@ static NORETURN void die_async(const char *err, va_list params)
 
        exit(128);
 }
+
+static int async_die_is_recursing(void)
+{
+       void *ret = pthread_getspecific(async_die_counter);
+       pthread_setspecific(async_die_counter, (void *)1);
+       return ret != NULL;
+}
+
 #endif
 
 int start_async(struct async *async)
@@ -694,7 +704,9 @@ int start_async(struct async *async)
                main_thread_set = 1;
                main_thread = pthread_self();
                pthread_key_create(&async_key, NULL);
+               pthread_key_create(&async_die_counter, NULL);
                set_die_routine(die_async);
+               set_die_is_recursing_routine(async_die_is_recursing);
        }
 
        if (proc_in >= 0)