---
name: "llseek"
section: "3"
platform: "linux"
package: "man-pages"
version: "6.19-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/llseek/3"
---

# llseek(3)

reposition read/write file offset

## NAME

llseek - reposition read/write file offset

## LIBRARY

Standard C library (*libc*, *-lc*)

## SYNOPSIS

```
[[deprecated]] loff_t llseek(int fd, loff_t offset, int whence);
```

## DESCRIPTION

This is not the function you are interested in. Look at [**\_llseek**(2)](/_llseek/2.md) or [**lseek**(2)](/lseek/2.md).

## HISTORY

When users complained about data loss caused by a miscompilation of [**e2fsck**(8)](/e2fsck/8.md), glibc 2.1.3 added the link-time warning

"the \`llseek´ function may be dangerous; use \`lseek64´ instead."

Since glibc 2.28, this function symbol is no longer available to newly linked applications.

## SEE ALSO

[**\_llseek**(2)](/_llseek/2.md), [**lseek**(2)](/lseek/2.md), [**lseek64**(3)](/lseek64/3.md)