From c28f2499952a78609e80d3b1f7aca9b0aab8d6d6 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Sat, 15 Jan 2022 20:12:56 +0100 Subject: [PATCH] mkimage: struct stat.st_size may not be long MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The component st_size of struct stat is of type off_t. Depending on the system printing it using %ld leads to a warning: tools/mkimage.c:438:54: warning: format '%ld' expects argument of type 'long int', but argument 5 has type 'off_t' {aka 'long long int'} [-Wformat=] 438 | "%s: Bad size: \"%s\" is not valid image: size %ld < %u\n", | ~~^ | | | long int | %lld When comparing an off_t value to a 32bit integer we should not convert to uint32_t but to off_t which may be wider. Reported-by: Milan P. Stanić Fixes: 331f0800f1a3 ("mkimage: allow -l to work on block devices on Linux") Signed-off-by: Heinrich Schuchardt Reviewed-by: Mark Kettenis --- tools/mkimage.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/tools/mkimage.c b/tools/mkimage.c index ddb7933..0ec28da 100644 --- a/tools/mkimage.c +++ b/tools/mkimage.c @@ -435,11 +435,12 @@ int main(int argc, char **argv) params.cmdname, params.imagefile); exit (EXIT_FAILURE); #endif - } else if ((unsigned)sbuf.st_size < tparams->header_size) { + } else if (sbuf.st_size < (off_t)tparams->header_size) { fprintf (stderr, - "%s: Bad size: \"%s\" is not valid image: size %ld < %u\n", + "%s: Bad size: \"%s\" is not valid image: size %llu < %u\n", params.cmdname, params.imagefile, - sbuf.st_size, tparams->header_size); + (unsigned long long) sbuf.st_size, + tparams->header_size); exit (EXIT_FAILURE); } else { size = sbuf.st_size; -- 2.7.4