fcntl - nix

Structs

AtFlags Flags that control how the various *at syscalls behave.
FallocateFlags Mode argument flags for fallocate determining operation performed on a given range.
FdFlag Additional configuration flags for fcntl's F_SETFD.
Flock Represents an owned flock, which unlocks on drop.
OFlag Configuration options for opened files.
OpenHow Specifies how [openat2()] should open a pathname.
RenameFlags Flags for use with renameat2.
ResolveFlag Path resolution flags.
SealFlag Additional flags for file sealing, which allows for limiting operations on a file.

fallocate Manipulates file space.
fcntl Perform various operations on open file descriptors.
flock
open open or create a file for reading, writing or executing
openat open or create a file for reading, writing or executing
openat2 Open or create a file for reading, writing or executing.
posix_fadvise Allows a process to describe to the system its data access behavior for an open file descriptor.
posix_fallocate Pre-allocate storage for a range in a file
readlink Read value of a symbolic link
readlinkat Read value of a symbolic link.
renameat Change the name of a file.
renameat2 Like renameat, but with an additional flags argument.

AT_FDCWD A file descriptor referring to the working directory of the current process that should be ONLY passed to the dirfd argument of those xxat() functions.