diff options
Diffstat (limited to 'winsup')
| -rw-r--r-- | winsup/cygwin/syscalls.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc index 3edb55bc6..b6aeb47c8 100644 --- a/winsup/cygwin/syscalls.cc +++ b/winsup/cygwin/syscalls.cc @@ -3005,8 +3005,10 @@ fallocate (int fd, int mode, off_t offset, off_t len) else if ((mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE)) == FALLOC_FL_PUNCH_HOLE) res = EOPNOTSUPP; - else if (offset < 0 || len == 0) + else if (offset < 0 || len <= 0) res = EINVAL; + else if (INT64_MAX - len < offset) + res = EFBIG; else { cygheap_fdget cfd (fd); |