diff options
Diffstat (limited to 'sysdeps/mach/hurd/lseek.c')
| -rw-r--r-- | sysdeps/mach/hurd/lseek.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/sysdeps/mach/hurd/lseek.c b/sysdeps/mach/hurd/lseek.c index 25e648bc8e..0a4077268a 100644 --- a/sysdeps/mach/hurd/lseek.c +++ b/sysdeps/mach/hurd/lseek.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991-2016 Free Software Foundation, Inc. +/* Copyright (C) 1991-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -17,12 +17,22 @@ #include <unistd.h> #include <sys/types.h> +#include <errno.h> /* Seek to OFFSET on FD, starting from WHENCE. */ off_t __libc_lseek (int fd, off_t offset, int whence) { - return __libc_lseek64 (fd, (off64_t) offset, whence); + off64_t res64 = __libc_lseek64 (fd, (off64_t) offset, whence); + off_t res = (off_t) res64; + + if (sizeof res != sizeof res64 && res != res64) + { + __set_errno (EOVERFLOW); + return (off_t) -1; + } + + return res; } weak_alias (__libc_lseek, __lseek) |