Open for reading as O_RDONLY instead of O_RDWR:
the only usage of the fd is for the single read() below;
this prevented
mkimage -f auto -A arm64 \
-T kernel -C lz4 -d Image-6.6.15.lz4 \
-b mt8173-elm-hana-6.6.15.dtb outf
when the inputs were unwritable.Link: https://bugs.debian.org/1063097 Signed-off-by: Ahelenia Ziemiańska <nabijaczlew...@nabijaczleweli.xyz> Reviewed-by: Dragan Simic <dsi...@manjaro.org> --- tools/fit_image.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/fit_image.c b/tools/fit_image.c index beef1fa8..0fccfbb4 100644 --- a/tools/fit_image.c +++ b/tools/fit_image.c @@ -137,7 +137,7 @@ static int fdt_property_file(struct image_tool_params *params, int ret; int fd; - fd = open(fname, O_RDWR | O_BINARY); + fd = open(fname, O_RDONLY | O_BINARY); if (fd < 0) { fprintf(stderr, "%s: Can't open %s: %s\n", params->cmdname, fname, strerror(errno)); -- 2.39.2
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