---
name: "ll2_update_login_time"
section: "3"
platform: "linux"
package: "util-linux-libs"
version: "2.42.4-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/ll2_update_login_time"
---

# ll2\_update\_login\_time(3)

Writes a \*new\* entry with updated login time.

## NAME

ll2\_update\_login\_time - Writes a \*new\* entry with updated login time.

## SYNOPSIS

**#include \<lastlog2.h\>**

**int ll2\_update\_login\_time (struct ll2\_context \****context***,** **const char \****user***, int64\_t** *ll\_time***,** **char \*\****error***);**

## DESCRIPTION

*Writes a* **new** *entry to database, defined in context, for user user.* *Time is set by ll\_time whereas the other values are taken from* *an already existing entry.* *If context is NULL, the default database, defined in LL2\_DEFAULT\_DATABASE,* *will be taken.*

```
char    *error = NULL;
const   char *user = "root";
int64_t login_time = time(0); // Get the system time;
int ret = ll2_update_login_time (NULL, user, login_time, &error);
```

## RETURN VALUE

*Returns 0 on success, -ENOMEM or -1 on other failure.* *error contains an error string if the return value is -1.* *error is not guaranteed to contain an error string, could also be NULL.* *error should be freed by the caller.*

## AUTHORS

*Thorsten Kukuk \<kukuk@suse.de\>*

## SEE ALSO

**lastlog2***(3),* **ll2\_new\_context***(3),* **ll2\_unref\_context***(3),* **ll2\_read\_all***(3),* **ll2\_write\_entry***(3),* **ll2\_read\_entry***(3),* **ll2\_remove\_entry***(3),* **ll2\_rename\_user***(3),* **ll2\_import\_lastlog***(3)*

## REPORTING BUGS

*For bug reports, use the* *issue tracker \<https://github.com/util-linux/util-linux/issues\>.*

## AVAILABILITY

*The* **liblastlog2** *library is part of the util-linux package since version 2.40. It can be downloaded from* *Linux Kernel Archive \<https://www.kernel.org/pub/linux/utils/util-linux/\>.*