glibc/sysdeps/unix/sysv/linux/Versions
Florian Weimer 446d22e91d 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>
2017-12-05 15:20:35 +01:00

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libc {
# The comment lines with "#errlist-compat" are magic; see errlist-compat.awk.
# When you get an error from errlist-compat.awk, you need to add a new
# version here. Don't do this blindly, since this means changing the ABI
# for all GNU/Linux configurations.
GLIBC_2.0 {
# functions used in inline functions or macros
__cmsg_nxthdr;
# functions used in other libraries
__clone;
# helper functions
__errno_location;
# b*
bdflush;
# c*
clone; create_module;
# d*
delete_module;
# g*
get_kernel_syms; getresgid; getresuid;
# i*
init_module;
# k*
klogctl;
# l*
llseek;
# m*
mremap;
# n*
nfsservctl;
# p*
personality; prctl;
# q*
query_module; quotactl;
# s*
setfsgid; setfsuid;
# s*
setresgid; setresuid; swapoff; swapon; sysctl; sysinfo;
# u*
umount; uselib;
#errlist-compat 123
_sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
}
GLIBC_2.1 {
# functions used in inline functions or macros
__libc_sa_len;
# Since we have new signals this structure changed.
_sys_siglist; sys_siglist; sys_sigabbrev;
# New errlist.
_sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
# chown interface change.
chown;
# Change in pthread_attr_t.
pthread_attr_init;
# c*
capget; capset;
# n*
ntp_adjtime; ntp_gettime;
# u*
umount2;
#errlist-compat 125
_sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
}
GLIBC_2.2 {
# needed in other libraries.
__endmntent; __getmntent_r; __setmntent; __statfs; __sysctl;
# ipc ctl interface change.
semctl; shmctl; msgctl;
}
GLIBC_2.2.1 {
# p*
pivot_root;
}
GLIBC_2.3 {
# r*
readahead;
#errlist-compat 126
_sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
}
GLIBC_2.3.2 {
# New kernel interfaces.
epoll_create; epoll_ctl; epoll_wait;
}
GLIBC_2.3.3 {
gnu_dev_major; gnu_dev_minor; gnu_dev_makedev;
}
GLIBC_2.3.4 {
sched_getaffinity; sched_setaffinity;
}
GLIBC_2.4 {
inotify_init; inotify_add_watch; inotify_rm_watch;
unshare;
#errlist-compat 132
_sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
}
GLIBC_2.5 {
splice; tee; vmsplice;
}
GLIBC_2.6 {
epoll_pwait; sync_file_range; sched_getcpu;
}
GLIBC_2.7 {
eventfd; eventfd_read; eventfd_write; signalfd;
}
GLIBC_2.8 {
timerfd_create; timerfd_settime; timerfd_gettime;
}
GLIBC_2.9 {
epoll_create1; inotify_init1;
}
GLIBC_2.10 {
fallocate;
}
GLIBC_2.12 {
#errlist-compat 135
_sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
ntp_gettimex;
recvmmsg;
}
GLIBC_2.13 {
prlimit; prlimit64;
fanotify_init; fanotify_mark;
}
GLIBC_2.14 {
clock_adjtime;
name_to_handle_at; open_by_handle_at;
setns;
sendmmsg;
}
GLIBC_2.15 {
process_vm_readv; process_vm_writev;
}
GLIBC_2.27 {
memfd_create;
mlock2;
pkey_alloc; pkey_free; pkey_set; pkey_get; pkey_mprotect;
}
GLIBC_PRIVATE {
# functions used in other libraries
__syscall_rt_sigqueueinfo;
__open_nocancel;
__read_nocancel;
__close_nocancel;
__sigtimedwait;
# functions used by nscd
__netlink_assert_response;
}
}