open_exclusive()

`open_exclusive()`#

open_exclusive() opens a file with exclusive access, ensuring that no other process can lock it simultaneously.

C

Prototype

int open_exclusive(
    const char *path,
    int         flags,
    int         permission
);

Parameters

Key	Type	Description
`path`	`const char *`	The file path to be opened.
`flags`	`int`	Flags for opening the file. If set to 0, default flags (`O_RDWR \| O_LARGEFILE \| O_NOFOLLOW`) are used.
`permission`	`int`	The file permission mode, used when creating a new file.

Return Value

Returns a file descriptor on success, or -1 on failure.

Notes

This function applies an exclusive lock (LOCK_EX | LOCK_NB) to the file, ensuring that no other process can acquire a lock on it.

JS

Prototype

// Not applicable in JS

Python

Prototype

# Not applicable in Python