Merge branch 'ab/receive-pack-use-after-free-fix'

diff --git a/git.c b/git.c
index 0ce0e13f0f4879ae4608bd61d3a6a1f55ef7892e..2014aab6b83c61695d50ac39a18864a8d77858e0 100644 (file)
--- a/git.c
+++ b/git.c
@@ -147,16 +147,20 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
                                git_set_exec_path(cmd + 1);
                        else {
                                puts(git_exec_path());
+                               trace2_cmd_name("_query_");
                                exit(0);
                        }
                } else if (!strcmp(cmd, "--html-path")) {
                        puts(system_path(GIT_HTML_PATH));
+                       trace2_cmd_name("_query_");
                        exit(0);
                } else if (!strcmp(cmd, "--man-path")) {
                        puts(system_path(GIT_MAN_PATH));
+                       trace2_cmd_name("_query_");
                        exit(0);
                } else if (!strcmp(cmd, "--info-path")) {
                        puts(system_path(GIT_INFO_PATH));
+                       trace2_cmd_name("_query_");
                        exit(0);
                } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
                        use_pager = 1;
@@ -285,6 +289,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
                        (*argv)++;
                        (*argc)--;
                } else if (skip_prefix(cmd, "--list-cmds=", &cmd)) {
+                       trace2_cmd_name("_query_");
                        if (!strcmp(cmd, "parseopt")) {
                                struct string_list list = STRING_LIST_INIT_DUP;
                                int i;
@@ -332,9 +337,14 @@ static int handle_alias(int *argcp, const char ***argv)
                        commit_pager_choice();
 
                        child.use_shell = 1;
+                       child.trace2_child_class = "shell_alias";
                        argv_array_push(&child.args, alias_string + 1);
                        argv_array_pushv(&child.args, (*argv) + 1);
 
+                       trace2_cmd_alias(alias_command, child.args.argv);
+                       trace2_cmd_list_config();
+                       trace2_cmd_name("_run_shell_alias_");
+
                        ret = run_command(&child);
                        if (ret >= 0)   /* normal exit */
                                exit(ret);
@@ -369,6 +379,9 @@ static int handle_alias(int *argcp, const char ***argv)
                /* insert after command name */
                memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp);
 
+               trace2_cmd_alias(alias_command, new_argv);
+               trace2_cmd_list_config();
+
                *argv = new_argv;
                *argcp += count - 1;
 
@@ -417,10 +430,12 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
                setup_work_tree();
 
        trace_argv_printf(argv, "trace: built-in: git");
+       trace2_cmd_name(p->cmd);
+       trace2_cmd_list_config();
 
-       validate_cache_entries(&the_index);
+       validate_cache_entries(the_repository->index);
        status = p->fn(argc, argv, prefix);
-       validate_cache_entries(&the_index);
+       validate_cache_entries(the_repository->index);
 
        if (status)
                return status;
@@ -666,7 +681,14 @@ static void execv_dashed_external(const char **argv)
        cmd.clean_on_exit = 1;
        cmd.wait_after_clean = 1;
        cmd.silent_exec_failure = 1;
+       cmd.trace2_child_class = "dashed";
 
+       trace2_cmd_name("_run_dashed_");
+
+       /*
+        * The code in run_command() logs trace2 child_start/child_exit
+        * events, so we do not need to report exec/exec_result events here.
+        */
        trace_argv_printf(cmd.args.argv, "trace: exec:");
 
        /*
@@ -676,6 +698,12 @@ static void execv_dashed_external(const char **argv)
         * the program.
         */
        status = run_command(&cmd);
+
+       /*
+        * If the child process ran and we are now going to exit, emit a
+        * generic string as our trace2 command verb to indicate that we
+        * launched a dashed command.
+        */
        if (status >= 0)
                exit(status);
        else if (errno != ENOENT)
@@ -701,6 +729,43 @@ static int run_argv(int *argcp, const char ***argv)
                if (!done_alias)
                        handle_builtin(*argcp, *argv);
 
+#if 0 // TODO In GFW, need to amend a7924b655e940b06cb547c235d6bed9767929673 to include trace2_ and _tr2 lines.
+               else if (get_builtin(**argv)) {
+                       struct argv_array args = ARGV_ARRAY_INIT;
+                       int i;
+
+                       /*
+                        * The current process is committed to launching a
+                        * child process to run the command named in (**argv)
+                        * and exiting.  Log a generic string as the trace2
+                        * command verb to indicate this.  Note that the child
+                        * process will log the actual verb when it runs.
+                        */
+                       trace2_cmd_name("_run_git_alias_");
+
+                       if (get_super_prefix())
+                               die("%s doesn't support --super-prefix", **argv);
+
+                       commit_pager_choice();
+
+                       argv_array_push(&args, "git");
+                       for (i = 0; i < *argcp; i++)
+                               argv_array_push(&args, (*argv)[i]);
+
+                       trace_argv_printf(args.argv, "trace: exec:");
+
+                       /*
+                        * if we fail because the command is not found, it is
+                        * OK to return. Otherwise, we just pass along the status code.
+                        */
+                       i = run_command_v_opt_tr2(args.argv, RUN_SILENT_EXEC_FAILURE |
+                                                 RUN_CLEAN_ON_EXIT, "git_alias");
+                       if (i >= 0 || errno != ENOENT)
+                               exit(i);
+                       die("could not execute builtin %s", **argv);
+               }
+#endif // a7924b655e940b06cb547c235d6bed9767929673
+
                /* .. then try the external ones */
                execv_dashed_external(*argv);