http.postbuffer: allow full range of ssize_t values

Unfortunately, in order to push some large repos where a server does
not support chunked encoding, the http postbuffer must sometimes
exceed two gigabytes.  On a 64-bit system, this is OK: we just malloc
a larger buffer.

This means that we need to use CURLOPT_POSTFIELDSIZE_LARGE to set the
buffer size.

Signed-off-by: David Turner <dturner@twosigma.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/config.c b/config.c
index 1a4d855..aae6dcc 100644
--- a/config.c
+++ b/config.c
@@ -834,6 +834,15 @@ int git_parse_ulong(const char *value, unsigned long *ret)
 	return 1;
 }
 
+static int git_parse_ssize_t(const char *value, ssize_t *ret)
+{
+	intmax_t tmp;
+	if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
+		return 0;
+	*ret = tmp;
+	return 1;
+}
+
 NORETURN
 static void die_bad_number(const char *name, const char *value)
 {
@@ -892,6 +901,14 @@ unsigned long git_config_ulong(const char *name, const char *value)
 	return ret;
 }
 
+ssize_t git_config_ssize_t(const char *name, const char *value)
+{
+	ssize_t ret;
+	if (!git_parse_ssize_t(value, &ret))
+		die_bad_number(name, value);
+	return ret;
+}
+
 int git_parse_maybe_bool(const char *value)
 {
 	if (!value)