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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | AUTHORS | SEE ALSO | REPORTING BUGS | AVAILABILITY |
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LL2_GET_JOURNAL_MODE(3) Programmers Manual LL2_GET_JOURNAL_MODE(3)
ll2_get_journal_mode - get current SQLite journal mode for
lastlog2 database
#include <lastlog2.h>
int ll2_get_journal_mode(struct ll2_context *context, char mode,
char error);
The ll2_get_journal_mode() function retrieves the current SQLite
journal mode for the lastlog2 database associated with context.
If context is NULL, the default database, defined in
LL2_DEFAULT_DATABASE, will be taken.
The returned journal mode string is in uppercase (e.g., "WAL",
"DELETE") for consistency with user input.
Common journal modes include:
• WAL - Write-Ahead Logging mode
• DELETE - Default mode
• TRUNCATE - Truncate mode
• PERSIST - Persist mode
• MEMORY - Memory mode
• OFF - Journaling disabled
struct ll2_context *ctx;
char *mode = NULL;
char *error = NULL;
ctx = ll2_new_context(NULL);
if (!ctx) {
fprintf(stderr, "Failed to create context\n");
return 1;
}
if (ll2_get_journal_mode(ctx, &mode, &error) != 0) {
fprintf(stderr, "Failed to get journal mode: %s\n", error);
free(error);
ll2_unref_context(ctx);
return 1;
}
printf("Current journal mode: %s\n", mode);
free(mode);
ll2_unref_context(ctx);
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. If successful, mode will be set to
a newly allocated string containing the current journal mode. The
caller must free this string.
Thorsten Kukuk <kukuk@suse.de>, WanBingjiang
<wanbingjiang@webray.com.cn>
lastlog2(3), ll2_set_journal_mode(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_update_login_time(3),
ll2_import_lastlog(3)
For bug reports, use the issue tracker
<https://github.com/util-linux/util-linux/issues>.
The liblastlog2 library is part of the util-linux package since
version 2.43. It can be downloaded from Linux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>. This page is
part of the util-linux (a random collection of Linux utilities)
project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
util-linux@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
2026-05-24. (At that time, the date of the most recent commit that
was found in the repository was 2026-05-20.) If you discover any
rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a
mail to man-pages@man7.org
util-linux 2.43.devel-739-eee2e 2026-05-24 LL2_GET_JOURNAL_MODE(3)
Pages that refer to this page: ll2_set_journal_mode(3)
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HTML rendering created 2026-05-24 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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