diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/bits')
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/mman-shared.h | 28 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/siginfo-consts.h | 6 |
2 files changed, 33 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/mman-shared.h b/sysdeps/unix/sysv/linux/bits/mman-shared.h index bee99c2384..9e532adb23 100644 --- a/sysdeps/unix/sysv/linux/bits/mman-shared.h +++ b/sysdeps/unix/sysv/linux/bits/mman-shared.h @@ -33,6 +33,12 @@ # define MLOCK_ONFAULT 1U # endif +/* Access rights for pkey_alloc. */ +# ifndef PKEY_DISABLE_ACCESS +# define PKEY_DISABLE_ACCESS 0x1 +# define PKEY_DISABLE_WRITE 0x2 +# endif + __BEGIN_DECLS /* Create a new memory file descriptor. NAME is a name for debugging. @@ -43,6 +49,28 @@ int memfd_create (const char *__name, unsigned int __flags) __THROW; memory. FLAGS is a combination of the MLOCK_* flags above. */ int mlock2 (const void *__addr, size_t __length, unsigned int __flags) __THROW; +/* Allocate a new protection key, with the PKEY_DISABLE_* bits + specified in ACCESS_RIGHTS. The protection key mask for the + current thread is updated to match the access privilege for the new + key. */ +int pkey_alloc (unsigned int __flags, unsigned int __access_rights) __THROW; + +/* Update the access rights for the current thread for KEY, which must + have been allocated using pkey_alloc. */ +int pkey_set (int __key, unsigned int __access_rights) __THROW; + +/* Return the access rights for the current thread for KEY, which must + have been allocated using pkey_alloc. */ +int pkey_get (int _key) __THROW; + +/* Free an allocated protection key, which must have been allocated + using pkey_alloc. */ +int pkey_free (int __key) __THROW; + +/* Apply memory protection flags for KEY to the specified address + range. */ +int pkey_mprotect (void *__addr, size_t __len, int __prot, int __pkey) __THROW; + __END_DECLS #endif /* __USE_GNU */ diff --git a/sysdeps/unix/sysv/linux/bits/siginfo-consts.h b/sysdeps/unix/sysv/linux/bits/siginfo-consts.h index 525840cea1..e86b933040 100644 --- a/sysdeps/unix/sysv/linux/bits/siginfo-consts.h +++ b/sysdeps/unix/sysv/linux/bits/siginfo-consts.h @@ -111,8 +111,12 @@ enum { SEGV_MAPERR = 1, /* Address not mapped to object. */ # define SEGV_MAPERR SEGV_MAPERR - SEGV_ACCERR /* Invalid permissions for mapped object. */ + SEGV_ACCERR, /* Invalid permissions for mapped object. */ # define SEGV_ACCERR SEGV_ACCERR + SEGV_BNDERR, /* Bounds checking failure. */ +# define SEGV_BNDERR SEGV_BNDERR + SEGV_PKUERR /* Protection key checking failure. */ +# define SEGV_PKUERR SEGV_PKUERR }; /* `si_code' values for SIGBUS signal. */ |