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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /security/landlock/cred.c
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'security/landlock/cred.c')
-rw-r--r--security/landlock/cred.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/security/landlock/cred.c b/security/landlock/cred.c
new file mode 100644
index 000000000..03449c262
--- /dev/null
+++ b/security/landlock/cred.c
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Landlock - Credential hooks
+ *
+ * Copyright © 2017-2020 Mickaël Salaün <mic@digikod.net>
+ * Copyright © 2018-2020 ANSSI
+ * Copyright © 2024-2025 Microsoft Corporation
+ */
+
+#include <linux/binfmts.h>
+#include <linux/cred.h>
+#include <linux/lsm_hooks.h>
+
+#include "common.h"
+#include "cred.h"
+#include "ruleset.h"
+#include "setup.h"
+
+static void hook_cred_transfer(struct cred *const new,
+ const struct cred *const old)
+{
+ const struct landlock_cred_security *const old_llcred =
+ landlock_cred(old);
+
+ landlock_get_domain(old_llcred->domain);
+ *landlock_cred(new) = *old_llcred;
+}
+
+static int hook_cred_prepare(struct cred *const new,
+ const struct cred *const old, const gfp_t gfp)
+{
+ hook_cred_transfer(new, old);
+ return 0;
+}
+
+static void hook_cred_free(struct cred *const cred)
+{
+ struct landlock_domain *const dom = landlock_cred(cred)->domain;
+
+ if (dom)
+ landlock_put_domain_deferred(dom);
+}
+
+#ifdef CONFIG_SECURITY_LANDLOCK_LOG
+
+static int hook_bprm_creds_for_exec(struct linux_binprm *const bprm)
+{
+ /* Resets for each execution. */
+ landlock_cred(bprm->cred)->domain_exec = 0;
+ return 0;
+}
+
+#endif /* CONFIG_SECURITY_LANDLOCK_LOG */
+
+static struct security_hook_list landlock_hooks[] __ro_after_init = {
+ LSM_HOOK_INIT(cred_prepare, hook_cred_prepare),
+ LSM_HOOK_INIT(cred_transfer, hook_cred_transfer),
+ LSM_HOOK_INIT(cred_free, hook_cred_free),
+
+#ifdef CONFIG_SECURITY_LANDLOCK_LOG
+ LSM_HOOK_INIT(bprm_creds_for_exec, hook_bprm_creds_for_exec),
+#endif /* CONFIG_SECURITY_LANDLOCK_LOG */
+};
+
+__init void landlock_add_cred_hooks(void)
+{
+ security_add_hooks(landlock_hooks, ARRAY_SIZE(landlock_hooks),
+ &landlock_lsmid);
+}