From: Konstantin Khlebnikov > Sent: 23 May 2019 17:22 .... > > In addition, the syscall will also work for tasks that do not have procfs > > mounted and on kernels that do not have procfs support compiled in. In such > > situations the only way to make sure that all file descriptors are closed > > is to call close() on each file descriptor up to UINT_MAX or RLIMIT_NOFILE, > > OPEN_MAX trickery (cf. comment [8] on Rust). Code using RLIMIT_NOFILE is broken. It is easy to reduce the hard limit below that of an open fd. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)