diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86/dl-cet.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86/dl-cet.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/x86/dl-cet.h b/sysdeps/unix/sysv/linux/x86/dl-cet.h index c885bf1323..da220ac627 100644 --- a/sysdeps/unix/sysv/linux/x86/dl-cet.h +++ b/sysdeps/unix/sysv/linux/x86/dl-cet.h @@ -21,12 +21,20 @@ static inline int __attribute__ ((always_inline)) dl_cet_disable_cet (unsigned int cet_feature) { - return (int) INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_CET_DISABLE, - cet_feature); + if (cet_feature != GNU_PROPERTY_X86_FEATURE_1_SHSTK) + return -1; + long long int kernel_feature = ARCH_SHSTK_SHSTK; + return (int) INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_SHSTK_DISABLE, + kernel_feature); } static inline int __attribute__ ((always_inline)) -dl_cet_lock_cet (void) +dl_cet_lock_cet (unsigned int cet_feature) { - return (int) INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_CET_LOCK, 0); + if (cet_feature != GNU_PROPERTY_X86_FEATURE_1_SHSTK) + return -1; + /* Lock all SHSTK features. */ + long long int kernel_feature = -1; + return (int) INTERNAL_SYSCALL_CALL (arch_prctl, ARCH_SHSTK_LOCK, + kernel_feature); } |