xread/xwrite: clip MAX_IO_SIZE to SSIZE_MAX

diff --git a/builtin/log.c b/builtin/log.c
index e3222ed9f979e3140cbfc88ad2839c573c89bf06..2625f9881ad836d1a3e303f4c159d6b76a3ae04f 100644 (file)
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1112,6 +1112,21 @@ static int cc_callback(const struct option *opt, const char *arg, int unset)
        return 0;
 }
 
+static int from_callback(const struct option *opt, const char *arg, int unset)
+{
+       char **from = opt->value;
+
+       free(*from);
+
+       if (unset)
+               *from = NULL;
+       else if (arg)
+               *from = xstrdup(arg);
+       else
+               *from = xstrdup(git_committer_info(IDENT_NO_DATE));
+       return 0;
+}
+
 int cmd_format_patch(int argc, const char **argv, const char *prefix)
 {
        struct commit *commit;
@@ -1134,6 +1149,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        int quiet = 0;
        int reroll_count = -1;
        char *branch_name = NULL;
+       char *from = NULL;
        const struct option builtin_format_patch_options[] = {
                { OPTION_CALLBACK, 'n', "numbered", &numbered, NULL,
                            N_("use [PATCH n/m] even with a single patch"),
@@ -1177,6 +1193,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                            0, to_callback },
                { OPTION_CALLBACK, 0, "cc", NULL, N_("email"), N_("add Cc: header"),
                            0, cc_callback },
+               { OPTION_CALLBACK, 0, "from", &from, N_("ident"),
+                           N_("set From address to <ident> (or committer ident if absent)"),
+                           PARSE_OPT_OPTARG, from_callback },
                OPT_STRING(0, "in-reply-to", &in_reply_to, N_("message-id"),
                            N_("make first mail a reply to <message-id>")),
                { OPTION_CALLBACK, 0, "attach", &rev, N_("boundary"),
@@ -1264,6 +1283,11 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 
        rev.extra_headers = strbuf_detach(&buf, NULL);
 
+       if (from) {
+               if (split_ident_line(&rev.from_ident, from, strlen(from)))
+                       die(_("invalid ident line: %s"), from);
+       }
+
        if (start_number < 0)
                start_number = 1;