CID 47546: Time of check time of use (CWE-367)

[mmaraya]

ftp/ftp.c#L784

fs_check_call: Calling function access to perform check on local

ftp/ftp.c#L876

toctou: Calling function fopen that uses local after a check function. This can cause a time-of-check, time-of-use race condition

An attacker could change the filename's file association or other attributes between the check and use.
In recvrequest: A check occurs on a file's attributes before the file is used in a privileged operation, but things may have changed (CWE-367)