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From d8024b3de8ce376cdea48ffa59a44b050f215470 Mon Sep 17 00:00:00 2001
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From: Yu Watanabe <watanabe.yu+github@gmail.com>
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Date: Mon, 6 Aug 2018 13:42:14 +0900
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Subject: [PATCH] core: introduce cgroup_add_device_allow()
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(cherry picked from commit fd870bac25c2dd36affaed0251b5a7023f635306)
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Related: #1763435
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---
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src/core/cgroup.c | 29 +++++++++++++++++++++++++++++
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src/core/cgroup.h | 2 ++
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src/core/load-fragment.c | 13 +------------
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3 files changed, 32 insertions(+), 12 deletions(-)
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diff --git a/src/core/cgroup.c b/src/core/cgroup.c
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index 9d09c65453..a17b38f914 100644
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--- a/src/core/cgroup.c
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+++ b/src/core/cgroup.c
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@@ -341,6 +341,35 @@ void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
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}
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}
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+int cgroup_add_device_allow(CGroupContext *c, const char *dev, const char *mode) {
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+ _cleanup_free_ CGroupDeviceAllow *a = NULL;
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+ _cleanup_free_ char *d = NULL;
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+
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+ assert(c);
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+ assert(dev);
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+ assert(isempty(mode) || in_charset(mode, "rwm"));
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+
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+ a = new(CGroupDeviceAllow, 1);
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+ if (!a)
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+ return -ENOMEM;
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+
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+ d = strdup(dev);
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+ if (!d)
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+ return -ENOMEM;
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+
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+ *a = (CGroupDeviceAllow) {
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+ .path = TAKE_PTR(d),
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+ .r = isempty(mode) || !!strchr(mode, 'r'),
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+ .w = isempty(mode) || !!strchr(mode, 'w'),
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+ .m = isempty(mode) || !!strchr(mode, 'm'),
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+ };
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+
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+ LIST_PREPEND(device_allow, c->device_allow, a);
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+ TAKE_PTR(a);
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+
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+ return 0;
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+}
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+
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static int lookup_block_device(const char *p, dev_t *ret) {
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struct stat st;
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int r;
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diff --git a/src/core/cgroup.h b/src/core/cgroup.h
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index 5e1be87b20..8102b442b8 100644
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--- a/src/core/cgroup.h
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+++ b/src/core/cgroup.h
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@@ -153,6 +153,8 @@ void cgroup_context_free_io_device_latency(CGroupContext *c, CGroupIODeviceLaten
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void cgroup_context_free_blockio_device_weight(CGroupContext *c, CGroupBlockIODeviceWeight *w);
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void cgroup_context_free_blockio_device_bandwidth(CGroupContext *c, CGroupBlockIODeviceBandwidth *b);
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+int cgroup_add_device_allow(CGroupContext *c, const char *dev, const char *mode);
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+
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CGroupMask unit_get_own_mask(Unit *u);
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CGroupMask unit_get_delegate_mask(Unit *u);
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CGroupMask unit_get_members_mask(Unit *u);
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diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
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index d43b0f08f9..89a3457acc 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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@@ -3250,7 +3250,6 @@ int config_parse_device_allow(
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_cleanup_free_ char *path = NULL, *resolved = NULL;
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CGroupContext *c = data;
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- CGroupDeviceAllow *a;
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const char *p = rvalue;
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int r;
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@@ -3299,17 +3298,7 @@ int config_parse_device_allow(
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return 0;
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}
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- a = new0(CGroupDeviceAllow, 1);
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- if (!a)
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- return log_oom();
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-
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- a->path = TAKE_PTR(resolved);
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- a->r = isempty(p) || !!strchr(p, 'r');
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- a->w = isempty(p) || !!strchr(p, 'w');
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- a->m = isempty(p) || !!strchr(p, 'm');
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-
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- LIST_PREPEND(device_allow, c->device_allow, a);
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- return 0;
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+ return cgroup_add_device_allow(c, resolved, p);
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}
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int config_parse_io_device_weight(
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