X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=tools%2Ffit_common.c;h=81ba698abd2594727522559c0ca8560268bdae20;hb=4491327d59179a212e36f1889bd143c99159138b;hp=286f357ab1769af8c507e6c94719558800ce7a92;hpb=ef0af64b1c45b8ee28db12c16c4ee881ee328e44;p=oweals%2Fu-boot.git

diff --git a/tools/fit_common.c b/tools/fit_common.c
index 286f357ab1..81ba698abd 100644
--- a/tools/fit_common.c
+++ b/tools/fit_common.c
@@ -38,8 +38,8 @@ int fit_check_image_types(uint8_t type)
 		return EXIT_FAILURE;
 }
 
-int mmap_fdt(const char *cmdname, const char *fname, void **blobp,
-	     struct stat *sbuf, bool delete_on_error)
+int mmap_fdt(const char *cmdname, const char *fname, size_t size_inc,
+	     void **blobp, struct stat *sbuf, bool delete_on_error)
 {
 	void *ptr;
 	int fd;
@@ -59,6 +59,15 @@ int mmap_fdt(const char *cmdname, const char *fname, void **blobp,
 		goto err;
 	}
 
+	if (size_inc) {
+		sbuf->st_size += size_inc;
+		if (ftruncate(fd, sbuf->st_size)) {
+			fprintf(stderr, "%s: Can't expand %s: %s\n",
+				cmdname, fname, strerror(errno));
+		goto err;
+		}
+	}
+
 	errno = 0;
 	ptr = mmap(0, sbuf->st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
 	if ((ptr == MAP_FAILED) || (errno != 0)) {
@@ -73,6 +82,18 @@ int mmap_fdt(const char *cmdname, const char *fname, void **blobp,
 		goto err;
 	}
 
+	/* expand if needed */
+	if (size_inc) {
+		int ret;
+
+		ret = fdt_open_into(ptr, ptr, sbuf->st_size);
+		if (ret) {
+			fprintf(stderr, "%s: Cannot expand FDT: %s\n",
+				cmdname, fdt_strerror(ret));
+			goto err;
+		}
+	}
+
 	*blobp = ptr;
 	return fd;