From 475ac26a9b4f14e35839f6b0df17ea9e81531b74 Mon Sep 17 00:00:00 2001 From: Peter Stuge Date: Mon, 12 Jan 2009 21:00:35 +0000 Subject: [PATCH] flashrom: Check return value of fscanf()/fwrite()/fread() Fix build error on distros with warn_unused_result attributes in glibc. Signed-off-by: Peter Stuge Acked-by: Yul Rottmann git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3857 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- util/flashrom/flashrom.c | 20 +++++++++++++------- util/flashrom/layout.c | 4 ++-- 2 files changed, 15 insertions(+), 9 deletions(-) diff --git a/util/flashrom/flashrom.c b/util/flashrom/flashrom.c index 623ce7f05..9c8db6e6b 100644 --- a/util/flashrom/flashrom.c +++ b/util/flashrom/flashrom.c @@ -296,7 +296,7 @@ void print_version(void) int main(int argc, char *argv[]) { uint8_t *buf; - unsigned long size; + unsigned long size, numbytes; uint32_t erasedbytes; FILE *image; /* Probe for up to three flash chips. */ @@ -517,11 +517,11 @@ int main(int argc, char *argv[]) exclude_end_position - exclude_start_position); - fwrite(buf, sizeof(char), size, image); + numbytes = fwrite(buf, 1, size, image); fclose(image); - printf("done.\n"); + printf("%s.\n", numbytes == size ? "done" : "FAILED"); free(buf); - exit(0); + return numbytes != size; } // FIXME: flash writes stay enabled! exit(1); @@ -615,9 +615,11 @@ int main(int argc, char *argv[]) memset(buf + exclude_start_position, 0, exclude_end_position - exclude_start_position); - fwrite(buf, sizeof(char), size, image); + numbytes = fwrite(buf, 1, size, image); fclose(image); - printf("done.\n"); + printf("%s.\n", numbytes == size ? "done" : "FAILED"); + if (numbytes != size) + return 1; } else { struct stat image_stat; @@ -634,9 +636,13 @@ int main(int argc, char *argv[]) exit(1); } - fread(buf, sizeof(char), size, image); + numbytes = fread(buf, 1, size, image); show_id(buf, size, force); fclose(image); + if (numbytes != size) { + fprintf(stderr, "Error: Failed to read file. Got %ld bytes, wanted %ld!\n", numbytes, size); + return 1; + } } /* exclude range stuff. Nice idea, but at the moment it is only diff --git a/util/flashrom/layout.c b/util/flashrom/layout.c index e2be12e9a..84a8ec705 100644 --- a/util/flashrom/layout.c +++ b/util/flashrom/layout.c @@ -146,8 +146,8 @@ int read_romlayout(char *name) while (!feof(romlayout)) { char *tstr1, *tstr2; - fscanf(romlayout, "%s %s\n", tempstr, - rom_entries[romimages].name); + if (2 != fscanf(romlayout, "%s %s\n", tempstr, rom_entries[romimages].name)) + continue; #if 0 // fscanf does not like arbitrary comments like that :( later if (tempstr[0] == '#') { -- 2.25.1