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Check return value of fscanf()/fwrite()/fread()

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Fix build error on distros with warn_unused_result attributes in glibc.

Corresponding to flashrom svn r378 and coreboot v2 svn r3857.

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Yul Rottmann <yulrottmann@bitel.net>
This commit is contained in:
Peter Stuge
2009-01-12 21:00:35 +00:00
parent 4cf3eefb84
commit 1fec0f35c7
2 changed files with 15 additions and 9 deletions
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20
flashrom.c
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@ -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