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   fcntl    ( 2 )

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Ошибки (Error)

EACCES or EAGAIN Operation is prohibited by locks held by other processes.

EAGAIN The operation is prohibited because the file has been memory-mapped by another process.

EBADF fd is not an open file descriptor

EBADF cmd is F_SETLK or F_SETLKW and the file descriptor open mode doesn't match with the type of lock requested.

EBUSY cmd is F_SETPIPE_SZ and the new pipe capacity specified in arg is smaller than the amount of buffer space currently used to store data in the pipe.

EBUSY cmd is F_ADD_SEALS, arg includes F_SEAL_WRITE, and there exists a writable, shared mapping on the file referred to by fd.

EDEADLK It was detected that the specified F_SETLKW command would cause a deadlock.

EFAULT lock is outside your accessible address space.

EINTR cmd is F_SETLKW or F_OFD_SETLKW and the operation was interrupted by a signal; see signal(7).

EINTR cmd is F_GETLK, F_SETLK, F_OFD_GETLK, or F_OFD_SETLK, and the operation was interrupted by a signal before the lock was checked or acquired. Most likely when locking a remote file (e.g., locking over NFS), but can sometimes happen locally.

EINVAL The value specified in cmd is not recognized by this kernel.

EINVAL cmd is F_ADD_SEALS and arg includes an unrecognized sealing bit.

EINVAL cmd is F_ADD_SEALS or F_GET_SEALS and the filesystem containing the inode referred to by fd does not support sealing.

EINVAL cmd is F_DUPFD and arg is negative or is greater than the maximum allowable value (see the discussion of RLIMIT_NOFILE in getrlimit(2)).

EINVAL cmd is F_SETSIG and arg is not an allowable signal number.

EINVAL cmd is F_OFD_SETLK, F_OFD_SETLKW, or F_OFD_GETLK, and l_pid was not specified as zero.

EMFILE cmd is F_DUPFD and the per-process limit on the number of open file descriptors has been reached.

ENOLCK Too many segment locks open, lock table is full, or a remote locking protocol failed (e.g., locking over NFS).

ENOTDIR F_NOTIFY was specified in cmd, but fd does not refer to a directory.

EPERM cmd is F_SETPIPE_SZ and the soft or hard user pipe limit has been reached; see pipe(7).

EPERM Attempted to clear the O_APPEND flag on a file that has the append-only attribute set.

EPERM cmd was F_ADD_SEALS, but fd was not open for writing or the current set of seals on the file already includes F_SEAL_SEAL.