Module palaver::file

File and file descriptor-related functionality

Structs

FdFlag	Additional configuration flags for fcntl's F_SETFD.
FdIter	Iterator for all open file descriptors. Doesn't work on Windows.
OFlag	Configuration options for opened files.

Functions

copy	io::copy till len elapsed or error
copy_fd	Copy a file descriptor. Flags are passed atomically. flags being None copies the flags from oldfd. Panics if newfd doesn't exist and allow_nonexistent isn't set; this can help debug the race of another thread creating newfd and having it deleted from under it by us.
copy_sendfile	Loops sendfile till len elapsed or error
copy_splice	Loops splice till len elapsed or error
dup_fd	Duplicate a file descriptor. Flags are passed atomically. flags being None copies the flags from oldfd.
execve	execve, not requiring memory allocation unlike nix's, but panics on >255 args or vars.
fd_dir	Returns the path of the directory that contains entries for each open file descriptor. On Linux this is /proc/self/fd. Doesn't work on Windows.
fd_path	Returns the path of the entry for a particular open file descriptor. On Linux this is /proc/self/fd/{fd}. Doesn't work on Windows.
fexecve	Falls back to execve("/proc/self/fd/{fd}",...), falls back to execve("/tmp/{hash}")
memfd_create	Falls back to shm_open, falls back to creating+unlinking /tmp/{random_filename}
move_fd	Move a file descriptor. Flags are passed atomically. flags being None copies the flags from oldfd. Panics if newfd doesn't exist and allow_nonexistent isn't set; this can help debug the race of another thread creating newfd and having it deleted from under it by us.
move_fds	Maps file descriptors [(from,to)]
pipe	Like pipe2; not atomic on platforms that lack it
seal_fd	Makes a file descriptor read-only, which seems neccessary on some platforms to pass to fexecve and is good practise anyway.