Login Register

os.lockf()

os.lockf(fd, cmd, len)

Apply, test or remove a POSIX lock on an open file descriptor. fd is an open file descriptor. cmd specifies the command to use - one of F_LOCK, F_TLOCK, F_ULOCK or F_TEST. len specifies the section of the file to lock.

Availability: Unix.

New in version 3.3.

Links:

https://docs.python.org/3.5/library/os.html#os.lockf

doc_python

2025-01-10 15:47:30

Comments

Leave a Comment

Please login to continue.

Popular Articles

fcntl.lockf() fcntl.lockf(fd, cmd, len=0, start=0, whence=0) This is essentially a wrapper around the fcntl() locking calls. fd is the file descriptor of the fi

os.strerror() os.strerror(code) Return the error message corresponding to the error code in code. On platforms where strerror() returns NULL when given an unkno

os.makedev() os.makedev(major, minor) Compose a raw device number from the major and minor device numbers.

os.writev() os.writev(fd, buffers) Write the contents of buffers to file descriptor fd. buffers must be a sequence of bytes-like objects. Buffers are processe

os.wait3() os.wait3(options) Similar to waitpid(), except no process id argument is given and a 3-element tuple containing the child’s process id, exit statu