diff options
| -rw-r--r-- | include/linux/lsm_hook_defs.h | 2 | ||||
| -rw-r--r-- | include/linux/security.h | 8 | ||||
| -rw-r--r-- | init/initramfs.c | 3 | ||||
| -rw-r--r-- | security/security.c | 10 |
4 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h index 520730fe2d94..22a14fc794fe 100644 --- a/include/linux/lsm_hook_defs.h +++ b/include/linux/lsm_hook_defs.h @@ -449,3 +449,5 @@ LSM_HOOK(int, 0, uring_override_creds, const struct cred *new) LSM_HOOK(int, 0, uring_sqpoll, void) LSM_HOOK(int, 0, uring_cmd, struct io_uring_cmd *ioucmd) #endif /* CONFIG_IO_URING */ + +LSM_HOOK(void, LSM_RET_VOID, initramfs_populated, void) diff --git a/include/linux/security.h b/include/linux/security.h index 62233fec8ead..3298855abdbc 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -2256,4 +2256,12 @@ static inline int security_uring_cmd(struct io_uring_cmd *ioucmd) #endif /* CONFIG_SECURITY */ #endif /* CONFIG_IO_URING */ +#ifdef CONFIG_SECURITY +extern void security_initramfs_populated(void); +#else +static inline void security_initramfs_populated(void) +{ +} +#endif /* CONFIG_SECURITY */ + #endif /* ! __LINUX_SECURITY_H */ diff --git a/init/initramfs.c b/init/initramfs.c index 814241b64827..bc911e466d5b 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -17,6 +17,7 @@ #include <linux/namei.h> #include <linux/init_syscalls.h> #include <linux/umh.h> +#include <linux/security.h> #include "do_mounts.h" @@ -712,6 +713,8 @@ static void __init do_populate_rootfs(void *unused, async_cookie_t cookie) } done: + security_initramfs_populated(); + /* * If the initrd region is overlapped with crashkernel reserved region, * free only memory that is not part of crashkernel region. diff --git a/security/security.c b/security/security.c index 645a660320cb..fafd2d43cba0 100644 --- a/security/security.c +++ b/security/security.c @@ -5778,3 +5778,13 @@ int security_uring_cmd(struct io_uring_cmd *ioucmd) return call_int_hook(uring_cmd, ioucmd); } #endif /* CONFIG_IO_URING */ + +/** + * security_initramfs_populated() - Notify LSMs that initramfs has been loaded + * + * Tells the LSMs the initramfs has been unpacked into the rootfs. + */ +void security_initramfs_populated(void) +{ + call_void_hook(initramfs_populated); +} |