flashrom.c: Move write_buf_to_include_args() to cli_classic.c

The write_buf_to_include_args() helper is only ever used
by the cli frontend therefore make it static local to the
user.

BUG=b:242246291
TEST=builds

Change-Id: Ia16bf4b8e46a011aa45f98089d43904b077833a0
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/66648
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Evan Benn <evanbenn@google.com>
Reviewed-by: Sam McNally <sammc@google.com>
Reviewed-by: Thomas Heijligen <src@posteo.de>

1 files changed, 27 insertions, 0 deletions

diff --git a/cli_classic.c b/cli_classic.c
index 267f3c611..bac31d1c1 100644
--- a/cli_classic.c
+++ b/cli_classic.c
@@ -392,6 +392,33 @@ static int read_buf_from_include_args(const struct flashrom_layout *const layout
 	return 0;
 }
 
+/**
+ * @brief Writes content from buffer to one or more files.
+ *
+ * Writes content from supplied buffer to files. If a filename is specified for
+ * individual regions using the partial read syntax ('-i <region>[:<filename>]')
+ * then this will write files using data from the corresponding region in the
+ * supplied buffer.
+ *
+ * @param layout   The layout to be used.
+ * @param buf      Chip-sized buffer to read data from
+ * @return 0 on success
+ */
+static int write_buf_to_include_args(const struct flashrom_layout *const layout, unsigned char *buf)
+{
+	const struct romentry *entry = NULL;
+
+	while ((entry = layout_next_included(layout, entry))) {
+		if (!entry->file)
+			continue;
+		if (write_buf_to_file(buf + entry->start,
+				      entry->end - entry->start + 1, entry->file))
+			return 1;
+	}
+
+	return 0;
+}
+
 static int do_read(struct flashctx *const flash, const char *const filename)
 {
 	int ret;