aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/unix/sysv/linux/m68k
diff options
context:
space:
mode:
authorFlorian Weimer <fweimer@redhat.com>2017-12-05 15:20:30 +0100
committerFlorian Weimer <fweimer@redhat.com>2017-12-05 15:20:35 +0100
commit446d22e91d3113be57a4b0d1151cf337458c3bec (patch)
tree933a5832d0cbd3aed24a722f1b28a6aefd95fb6c /sysdeps/unix/sysv/linux/m68k
parentda616c1496e2bd3022dbe4afdd162a80731c08ad (diff)
downloadglibc-446d22e91d3113be57a4b0d1151cf337458c3bec.tar
glibc-446d22e91d3113be57a4b0d1151cf337458c3bec.tar.gz
glibc-446d22e91d3113be57a4b0d1151cf337458c3bec.tar.bz2
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/m68k')
-rw-r--r--sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist5
-rw-r--r--sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist5
2 files changed, 10 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 01d10d907c..9655afe395 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -110,6 +110,11 @@ 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_2.4 GLIBC_2.4 A
GLIBC_2.4 _Exit F
GLIBC_2.4 _IO_2_1_stderr_ D 0x98
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 3ad08c20bf..2d9cd557ad 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -1987,6 +1987,11 @@ 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