From 86aba86b1b031ec7c7cc43dd679c0991929e6305 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 26 Oct 2012 17:30:15 +0200 Subject: [PATCH] cws2fws: check lseek() return Fixes: CID733721 Signed-off-by: Michael Niedermayer --- tools/cws2fws.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/cws2fws.c b/tools/cws2fws.c index 8dc285bfff..c7b62df910 100644 --- a/tools/cws2fws.c +++ b/tools/cws2fws.c @@ -128,8 +128,8 @@ int main(int argc, char *argv[]) buf_in[2] = ((zstream.total_out + 8) >> 16) & 0xff; buf_in[3] = ((zstream.total_out + 8) >> 24) & 0xff; - lseek(fd_out, 4, SEEK_SET); - if (write(fd_out, &buf_in, 4) < 4) { + if ( lseek(fd_out, 4, SEEK_SET) < 0 + || write(fd_out, &buf_in, 4) < 4) { perror("Error writing output file"); return 1; }