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| author | Florian Weimer <fweimer@redhat.com> | 2017-12-05 15:20:30 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2017-12-05 15:20:35 +0100 |
| commit | 446d22e91d3113be57a4b0d1151cf337458c3bec (patch) | |
| tree | 933a5832d0cbd3aed24a722f1b28a6aefd95fb6c /sysdeps/unix/sysv/linux/mips | |
| parent | da616c1496e2bd3022dbe4afdd162a80731c08ad (diff) | |
| download | glibc-446d22e91d3113be57a4b0d1151cf337458c3bec.tar.gz glibc-446d22e91d3113be57a4b0d1151cf337458c3bec.tar.xz glibc-446d22e91d3113be57a4b0d1151cf337458c3bec.zip | |
Linux: Implement interfaces for memory protection keys
This adds system call wrappers for pkey_alloc, pkey_free, pkey_mprotect, and x86-64 implementations of pkey_get and pkey_set, which abstract over the PKRU CPU register and hide the actual number of memory protection keys supported by the CPU. pkey_mprotect with a -1 key is implemented using mprotect, so it will work even if the kernel does not support the pkey_mprotect system call. The system call wrapers use unsigned int instead of unsigned long for parameters, so that no special treatment for x32 is needed. The flags argument is currently unused, and the access rights bit mask is limited to two bits by the current PKRU register layout anyway. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips')
4 files changed, 20 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist index 9b1e890eda..42e4770341 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist @@ -1962,6 +1962,11 @@ GLIBC_2.27 glob F GLIBC_2.27 glob64 F GLIBC_2.27 memfd_create F GLIBC_2.27 mlock2 F +GLIBC_2.27 pkey_alloc F +GLIBC_2.27 pkey_free F +GLIBC_2.27 pkey_get F +GLIBC_2.27 pkey_mprotect F +GLIBC_2.27 pkey_set F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist index 3eb5b66f8b..a28a21f842 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist @@ -1960,6 +1960,11 @@ GLIBC_2.27 glob F GLIBC_2.27 glob64 F GLIBC_2.27 memfd_create F GLIBC_2.27 mlock2 F +GLIBC_2.27 pkey_alloc F +GLIBC_2.27 pkey_free F +GLIBC_2.27 pkey_get F +GLIBC_2.27 pkey_mprotect F +GLIBC_2.27 pkey_set F GLIBC_2.3 GLIBC_2.3 A GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist index 543a725114..b725205f4f 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist @@ -1958,6 +1958,11 @@ GLIBC_2.27 glob F GLIBC_2.27 glob64 F GLIBC_2.27 memfd_create F GLIBC_2.27 mlock2 F +GLIBC_2.27 pkey_alloc F +GLIBC_2.27 pkey_free F +GLIBC_2.27 pkey_get F +GLIBC_2.27 pkey_mprotect F +GLIBC_2.27 pkey_set F GLIBC_2.27 strfromf128 F GLIBC_2.27 strfromf64x F GLIBC_2.27 strtof128 F diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist index a9198a3936..373801d4f3 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist @@ -1953,6 +1953,11 @@ GLIBC_2.27 glob F GLIBC_2.27 glob64 F GLIBC_2.27 memfd_create F GLIBC_2.27 mlock2 F +GLIBC_2.27 pkey_alloc F +GLIBC_2.27 pkey_free F +GLIBC_2.27 pkey_get F +GLIBC_2.27 pkey_mprotect F +GLIBC_2.27 pkey_set F GLIBC_2.27 strfromf128 F GLIBC_2.27 strfromf64x F GLIBC_2.27 strtof128 F |