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From d8edaa8a9e542a8bcd92a6a2b2ce9103dc8b9074 Mon Sep 17 00:00:00 2001
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From: Michal Sekletar <msekleta@redhat.com>
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Date: Fri, 18 Nov 2016 14:00:57 +0100
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Subject: [PATCH] load-fragment: fix parsing values in bytes and prevent
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returning -ERANGE incorrectly
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We didn't port our code base to use uint64_t instead of off_t as
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upstream did. RLIMIT_INIFINITY is -1ULL and if we cast to off_t (64 bit
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signed int on arches we support) then we get -1 and that is always
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smaller than correct value returned by parse_size().
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To make code changes as minimal as possible (i.e. not port everything
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to uint64_t) let's cast off_t to uint64_t and not the other way
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around.
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RHEL-only
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Resolves: #1396277
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---
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src/core/load-fragment.c | 2 +-
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src/test/test-unit-file.c | 4 ++++
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2 files changed, 5 insertions(+), 1 deletion(-)
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diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
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index 2f6209e..83b6e7e 100644
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--- a/src/core/load-fragment.c
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+++ b/src/core/load-fragment.c
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@@ -1105,7 +1105,7 @@ static int rlim_parse_size(const char *val, rlim_t *res) {
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off_t u;
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r = parse_size(val, 1024, &u);
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- if (r >= 0 && u >= (off_t) RLIM_INFINITY)
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+ if (r >= 0 && (uint64_t) u >= RLIM_INFINITY)
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r = -ERANGE;
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if (r == 0)
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*res = (rlim_t) u;
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diff --git a/src/test/test-unit-file.c b/src/test/test-unit-file.c
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index 8acf071..0384305 100644
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--- a/src/test/test-unit-file.c
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+++ b/src/test/test-unit-file.c
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@@ -554,6 +554,10 @@ static void test_config_parse_rlimit(void) {
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assert_se(rl[RLIMIT_NOFILE]->rlim_cur == 55);
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assert_se(rl[RLIMIT_NOFILE]->rlim_cur == rl[RLIMIT_NOFILE]->rlim_max);
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+ assert_se(config_parse_bytes_limit(NULL, "fake", 1, "section", 1, "LimitSTACK", RLIMIT_STACK, "55", rl, NULL) >= 0);
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+ assert_se(rl[RLIMIT_STACK]);
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+ assert_se(rl[RLIMIT_STACK]->rlim_cur == 55);
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+ assert_se(rl[RLIMIT_STACK]->rlim_cur == rl[RLIMIT_STACK]->rlim_max);
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assert_se(config_parse_limit(NULL, "fake", 1, "section", 1, "LimitNOFILE", RLIMIT_NOFILE, "55:66", rl, NULL) >= 0);
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assert_se(rl[RLIMIT_NOFILE]);
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