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container/initdev: mount tmpfs on shm for ro dev

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Programs expect /dev/shm to be a writable tmpfs.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra
2025-08-26 03:15:32 +09:00
parent 07194c74cb
commit 9bc8532d56
12 changed files with 30 additions and 9 deletions
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2
container/container_test.go
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@@ -100,6 +100,7 @@ var containerTestCases = []struct {
ent("/tty", "/dev/tty", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
ent("/", "/dev/pts", "rw,nosuid,noexec,relatime", "devpts", "devpts", "rw,mode=620,ptmxmode=666"),
ent("/", "/dev/mqueue", "rw,nosuid,nodev,noexec,relatime", "mqueue", "mqueue", "rw"),
ent("/", "/dev/shm", "rw,nosuid,nodev,relatime", "tmpfs", "tmpfs", ignore),
),
1971, 100, nil, 0, seccomp.PresetStrict},
@@ -116,6 +117,7 @@ var containerTestCases = []struct {
ent("/urandom", "/dev/urandom", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
ent("/tty", "/dev/tty", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
ent("/", "/dev/pts", "rw,nosuid,noexec,relatime", "devpts", "devpts", "rw,mode=620,ptmxmode=666"),
ent("/", "/dev/shm", "rw,nosuid,nodev,relatime", "tmpfs", "tmpfs", ignore),
),
1971, 100, nil, 0, seccomp.PresetStrict},