fileio: Add fileio_write_file
Add a convenience function for writing a single buffer to a file.
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
diff --git a/fileio.c b/fileio.c
index ff829f1..f55d3a4 100644
--- a/fileio.c
+++ b/fileio.c
@@ -135,3 +135,23 @@
return rc;
}
+
+int fileio_write_file(const char *filename, uint8_t *buf, size_t len)
+{
+ int fd;
+
+ fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+ if (fd < 0) {
+ perror("open");
+ return -1;
+ }
+
+ if (!write_all(fd, buf, len)) {
+ perror("write_all");
+ close(fd);
+ return -1;
+ }
+
+ close(fd);
+ return 0;
+}
diff --git a/fileio.h b/fileio.h
index 3d6e505..1673a06 100644
--- a/fileio.h
+++ b/fileio.h
@@ -42,6 +42,7 @@
int fileio_read_file(void *ctx, const char *filename,
uint8_t **out_buf, size_t *out_len);
+int fileio_write_file(const char *filename, uint8_t *buf, size_t len);
#endif /* FILEIO_H */
