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internal/app: mount /dev/shm early
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Browse Source 
This avoids covering /dev/shm mounts from hst.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra
2025-09-14 01:35:17 +09:00
parent 3f25c3f0af
commit ca247b8037
11 changed files with 26 additions and 18 deletions
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7
test/sandbox/assert.go
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@@ -53,6 +53,13 @@ func (t *T) MustCheckFile(wantFilePath string) {
}
func (t *T) MustCheck(want *TestCase) {
// check /dev/shm writable
if err := os.WriteFile("/dev/shm/.hakurei-check", make([]byte, 1<<8), 0600); err != nil {
fatalf("[FAIL] %s", err)
} else {
printf("[ OK ] /dev/shm is writable")
}
if want.Env != nil {
var (
fail bool

3
test/sandbox/case/device.nix
View File

@@ -213,9 +213,10 @@ in
(ent "/" "/.hakurei" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,size=4k,mode=755,uid=1000004,gid=1000004")
(ent "/" "/dev" "rw,nosuid" "devtmpfs" "devtmpfs" ignore)
(ent "/" "/dev/pts" "rw,nosuid,noexec,relatime" "devpts" "devpts" "rw,gid=3,mode=620,ptmxmode=666")
(ent "/" "/dev/shm" "rw,nosuid,nodev" "tmpfs" "tmpfs" ignore)
(ent "/" "/dev/shm" "rw,nosuid,nodev" "tmpfs" "tmpfs" "rw")
(ent "/" ignore ignore ignore ignore ignore) # order not deterministic
(ent "/" ignore ignore ignore ignore ignore)
(ent "/" "/dev/shm" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,uid=1000004,gid=1000004")
(ent "/bin" "/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/usr/bin" "/usr/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/nix/store" "ro,nosuid,nodev,relatime" "overlay" "overlay" "rw,lowerdir=/mnt-root/nix/.ro-store,upperdir=/mnt-root/nix/.rw-store/upper,workdir=/mnt-root/nix/.rw-store/work,uuid=on")

4
test/sandbox/case/mapuid.nix
View File

@@ -73,7 +73,7 @@ in
ptmx = fs "80001ff" null null;
pts = fs "800001ed" { ptmx = fs "42001b6" null null; } null;
random = fs "42001b6" null null;
shm = fs "801001ff" { } null;
shm = fs "801001ff" { ".hakurei-check" = fs "180" null null; } null;
stderr = fs "80001ff" null null;
stdin = fs "80001ff" null null;
stdout = fs "80001ff" null null;
@@ -243,6 +243,7 @@ in
(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" "ephemeral" "rw,uid=1000003,gid=1000003")
(ent "/bin" "/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/usr/bin" "/usr/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/nix/store" "ro,nosuid,nodev,relatime" "overlay" "overlay" "rw,lowerdir=/mnt-root/nix/.ro-store,upperdir=/mnt-root/nix/.rw-store/upper,workdir=/mnt-root/nix/.rw-store/work,uuid=on")
@@ -257,7 +258,6 @@ in
(ent "/" "/.hakurei/store" "rw,relatime" "overlay" "overlay" "rw,lowerdir=/host/nix/.ro-store:/host/nix/.rw-store/upper,upperdir=/host/tmp/.hakurei-store-rw/upper,workdir=/host/tmp/.hakurei-store-rw/work,redirect_dir=nofollow,userxattr")
(ent "/etc" ignore "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/var/lib/hakurei/u0/a3" "/var/lib/hakurei/u0/a3" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/dev/shm" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,uid=1000003,gid=1000003")
(ent "/" "/run/user" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,size=4k,mode=755,uid=1000003,gid=1000003")
(ent "/tmp/hakurei.0/runtime/3" "/run/user/1000" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/tmp/hakurei.0/tmpdir/3" "/tmp" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")

4
test/sandbox/case/pd.nix
View File

@@ -36,7 +36,7 @@
ptmx = fs "80001ff" null null;
pts = fs "800001ed" { ptmx = fs "42001b6" null null; } null;
random = fs "42001b6" null null;
shm = fs "801001ff" { } null;
shm = fs "801001ff" { ".hakurei-check" = fs "180" null null; } null;
stderr = fs "80001ff" null null;
stdin = fs "80001ff" null null;
stdout = fs "80001ff" null null;
@@ -180,12 +180,12 @@
(ent "/" "/dev/pts" "rw,nosuid,noexec,relatime" "devpts" "devpts" "rw,mode=620,ptmxmode=666")
(ent ignore "/dev/console" "rw,nosuid,noexec,relatime" "devpts" "devpts" "rw,gid=3,mode=620,ptmxmode=666")
(ent "/" "/dev/mqueue" "rw,nosuid,nodev,noexec,relatime" "mqueue" "mqueue" "rw")
(ent "/" "/dev/shm" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,uid=1000000,gid=1000000")
(ent "/kvm" "/dev/kvm" "rw,nosuid" "devtmpfs" "devtmpfs" ignore)
(ent "/" "/run/nscd" "ro,nosuid,nodev,relatime" "tmpfs" "readonly" "ro,mode=755,uid=1000000,gid=1000000")
(ent "/etc" ignore "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/run/user/1000" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,size=8k,mode=755,uid=1000000,gid=1000000")
(ent "/" "/run/dbus" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,size=8k,mode=755,uid=1000000,gid=1000000")
(ent "/" "/dev/shm" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,uid=1000000,gid=1000000")
(ent "/" "/run/user" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,size=4k,mode=755,uid=1000000,gid=1000000")
(ent "/tmp/hakurei.0/runtime/0" "/run/user/65534" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/tmp/hakurei.0/tmpdir/0" "/tmp" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")

4
test/sandbox/case/pdlike.nix
View File

@@ -71,7 +71,7 @@ in
ptmx = fs "80001ff" null null;
pts = fs "800001ed" { ptmx = fs "42001b6" null null; } null;
random = fs "42001b6" null null;
shm = fs "801001ff" { } null;
shm = fs "801001ff" { ".hakurei-check" = fs "180" null null; } null;
stderr = fs "80001ff" null null;
stdin = fs "80001ff" null null;
stdout = fs "80001ff" null null;
@@ -241,6 +241,7 @@ in
(ent "/" "/dev/pts" "rw,nosuid,noexec,relatime" "devpts" "devpts" "rw,mode=620,ptmxmode=666")
(ent ignore "/dev/console" "rw,nosuid,noexec,relatime" "devpts" "devpts" "rw,gid=3,mode=620,ptmxmode=666")
(ent "/" "/dev/mqueue" "rw,nosuid,nodev,noexec,relatime" "mqueue" "mqueue" "rw")
(ent "/" "/dev/shm" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,uid=1000005,gid=1000005")
(ent "/bin" "/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/usr/bin" "/usr/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/nix/store" "ro,nosuid,nodev,relatime" "overlay" "overlay" "rw,lowerdir=/mnt-root/nix/.ro-store,upperdir=/mnt-root/nix/.rw-store/upper,workdir=/mnt-root/nix/.rw-store/work,uuid=on")
@@ -252,7 +253,6 @@ in
(ent "/dri" "/dev/dri" "rw,nosuid" "devtmpfs" "devtmpfs" ignore)
(ent "/etc" ignore "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/var/lib/hakurei/u0/a5" "/var/lib/hakurei/u0/a5" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/dev/shm" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,uid=1000005,gid=1000005")
(ent "/" "/run/user" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,size=4k,mode=755,uid=1000005,gid=1000005")
(ent "/tmp/hakurei.0/runtime/5" "/run/user/65534" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/tmp/hakurei.0/tmpdir/5" "/tmp" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")

4
test/sandbox/case/preset.nix
View File

@@ -70,7 +70,7 @@ in
ptmx = fs "80001ff" null null;
pts = fs "800001ed" { ptmx = fs "42001b6" null null; } null;
random = fs "42001b6" null null;
shm = fs "801001ff" { } null;
shm = fs "801001ff" { ".hakurei-check" = fs "180" null null; } null;
stderr = fs "80001ff" null null;
stdin = fs "80001ff" null null;
stdout = fs "80001ff" null null;
@@ -239,6 +239,7 @@ in
(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" "ephemeral" "rw,uid=1000001,gid=1000001")
(ent "/bin" "/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/usr/bin" "/usr/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/nix/store" "ro,nosuid,nodev,relatime" "overlay" "overlay" "rw,lowerdir=/mnt-root/nix/.ro-store,upperdir=/mnt-root/nix/.rw-store/upper,workdir=/mnt-root/nix/.rw-store/work,uuid=on")
@@ -250,7 +251,6 @@ in
(ent "/dri" "/dev/dri" "rw,nosuid" "devtmpfs" "devtmpfs" ignore)
(ent "/etc" ignore "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/var/lib/hakurei/u0/a1" "/var/lib/hakurei/u0/a1" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/dev/shm" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,uid=1000001,gid=1000001")
(ent "/" "/run/user" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,size=4k,mode=755,uid=1000001,gid=1000001")
(ent "/tmp/hakurei.0/runtime/1" "/run/user/65534" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/tmp/hakurei.0/tmpdir/1" "/tmp" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")

4
test/sandbox/case/tty.nix
View File

@@ -75,7 +75,7 @@ in
ptmx = fs "80001ff" null null;
pts = fs "800001ed" { ptmx = fs "42001b6" null null; } null;
random = fs "42001b6" null null;
shm = fs "801001ff" { } null;
shm = fs "801001ff" { ".hakurei-check" = fs "180" null null; } null;
stderr = fs "80001ff" null null;
stdin = fs "80001ff" null null;
stdout = fs "80001ff" null null;
@@ -248,6 +248,7 @@ in
(ent "/" "/dev/pts" "rw,nosuid,noexec,relatime" "devpts" "devpts" "rw,mode=620,ptmxmode=666")
(ent ignore "/dev/console" "rw,nosuid,noexec,relatime" "devpts" "devpts" "rw,gid=3,mode=620,ptmxmode=666")
(ent "/" "/dev/mqueue" "rw,nosuid,nodev,noexec,relatime" "mqueue" "mqueue" "rw")
(ent "/" "/dev/shm" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,uid=1000002,gid=1000002")
(ent "/bin" "/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/usr/bin" "/usr/bin" "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/nix/store" "ro,nosuid,nodev,relatime" "overlay" "overlay" "rw,lowerdir=/mnt-root/nix/.ro-store,upperdir=/mnt-root/nix/.rw-store/upper,workdir=/mnt-root/nix/.rw-store/work,uuid=on")
@@ -262,7 +263,6 @@ in
(ent "/" "/.hakurei/store" "rw,relatime" "overlay" "overlay" "rw,lowerdir=/host/nix/.ro-store:/host/nix/.rw-store/upper,upperdir=/host/tmp/.hakurei-store-rw/upper,workdir=/host/tmp/.hakurei-store-rw/work,redirect_dir=nofollow,uuid=on,userxattr")
(ent "/etc" ignore "ro,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/var/lib/hakurei/u0/a2" "/var/lib/hakurei/u0/a2" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/" "/dev/shm" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,uid=1000002,gid=1000002")
(ent "/" "/run/user" "rw,nosuid,nodev,relatime" "tmpfs" "ephemeral" "rw,size=4k,mode=755,uid=1000002,gid=1000002")
(ent "/tmp/hakurei.0/runtime/2" "/run/user/65534" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")
(ent "/tmp/hakurei.0/tmpdir/2" "/tmp" "rw,nosuid,nodev,relatime" "ext4" "/dev/disk/by-label/nixos" "rw")

2
test/test.py
View File

@@ -99,7 +99,7 @@ print(denyOutputVerbose)
# Fail direct hsu call:
print(machine.fail("sudo -u alice -i hsu"))
# Verify PrintBaseError behaviour:
# Verify hsu fault behaviour:
if denyOutput != "hsu: uid 1001 is not in the hsurc file\n":
raise Exception(f"unexpected deny output:\n{denyOutput}")
if denyOutputVerbose != "hsu: uid 1001 is not in the hsurc file\nhakurei: *cannot obtain uid from setuid wrapper: permission denied\n":