From 875ae5661a011b757f0eaa468dea6ba91cbe5437 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 8 Jun 2016 19:36:09 +0200 Subject: core: optionally, accept a percentage value for MemoryLimit= and related settings If a percentage is used, it is taken relative to the installed RAM size. This should make it easier to write generic unit files that adapt to the local system. --- src/core/load-fragment.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c index fe60bee789..05852cc7e3 100644 --- a/src/core/load-fragment.c +++ b/src/core/load-fragment.c @@ -2812,9 +2812,19 @@ int config_parse_memory_limit( int r; if (!isempty(rvalue) && !streq(rvalue, "infinity")) { - r = parse_size(rvalue, 1024, &bytes); - if (r < 0 || bytes < 1) { - log_syntax(unit, LOG_ERR, filename, line, r, "Memory limit '%s' invalid. Ignoring.", rvalue); + + r = parse_percent(rvalue); + if (r < 0) { + r = parse_size(rvalue, 1024, &bytes); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Memory limit '%s' invalid. Ignoring.", rvalue); + return 0; + } + } else + bytes = (((physical_memory() / page_size()) * (uint64_t) r) / 100) * page_size(); + + if (bytes < 1) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Memory limit '%s' too small. Ignoring.", rvalue); return 0; } } -- cgit v1.2.3-54-g00ecf