Add two missing syscalls from v5.14 and new syscalls from v6.4 .. v6.19
add __NR_quotactl_fd from linux v5.14 see
linux commit 9dfa23c8de925041b7b45637a1a80a98a22f19dd
quota: Add mountpath based quota support
linux commit fa8b90070a80bb1a3042b4b25af4b3ee2c4c27e1
quota: wire up quotactl_path
linux commit 64c2c2c62f92339b176ea24403d8db16db36f9e6
quota: Change quotactl_path() systcall to an fd-based one
add __NR_memfd_secret from linux v5.14 see
linux commit 7bb7f2ac24a028b20fca466b9633847b289b156a
arch, mm: wire up memfd_secret system call where relevant
linux commit 1507f51255c9ff07d75909a84e7c0d7f3c4b2f49
mm: introduce memfd_secret system call to create "secret" memory areas
note: was already added on x86 and s390, now on aarch64 and riscv*.
add riscv __NR_riscv_hwprobe from linux v6.4 see
linux commit ea3de9ce8aa280c5175c835bd3e94a3a9b814b74
RISC-V: Add a syscall for HW probing
add x86_64 only map_shadow_stack syscall from linux v6.6 see
linux commit c35559f94ebc3e3bc82e56e07161bb5986cd9761
x86/shstk: Introduce map_shadow_stack syscall
add map_shadow_stack syscall from linux v6.7 see
linux commit 2fd0ebad27bcd4c8fc61c61a98d4283c47054bcf
arch: Reserve map_shadow_stack() syscall number for all architectures
add futex_* syscalls from linux v6.7 see
linux commit 9f6c532f59b20580acf8ede9409c9b8dce6e74e1
futex: Add sys_futex_wake()
linux commit cb8c4312afca1b2dc64107e7e7cea81911055612
futex: Add sys_futex_wait()
linux commit 0f4b5f972216782a4acb1ae00dcb55173847c2ff
futex: Add sys_futex_requeue()
add statmount, listmount syscalls from linux v6.8 see
linux commit d8b0f5465012538cc4bb10ddc4affadbab73465b
wire up syscalls for statmount/listmount
linux commit b4c2bea8ceaa50cd42a8f73667389d801a3ecf2d
add listmount(2) syscall
linux commit 46eae99ef73302f9fb3dddcd67c374b3dffe8fd6
add statmount(2) syscall
add lsm_* syscalls from linux v6.8 see
linux commit 5f42375904b08890f2e8e7cd955c5bf0c2c0d05a
LSM: wireup Linux Security Module syscalls
linux commit ad4aff9ec25f400608283c10d634cc4eeda83a02
LSM: Create lsm_list_modules system call
linux commit a04a1198088a1378d0389c250cc684f649bcc91e
LSM: syscalls for current process attributes
add mseal syscall from linux v6.10 see
linux commit ff388fe5c481d39cc0a5940d1ad46f7920f1d646
mseal: wire up mseal syscall
on sh add sync_file_range2 from linux v6.10 see
linux commit 30766f1105d6d2459c3b9fe34a3e52b637a72950
sh: rework sync_file_range ABI
on x86 add uretprobe from linux v6.11 see
linux commit 54233a4254036efca91b9bffbd398ecf39e90555
uretprobe: change syscall number, again
add *xattrat syscalls from linux v6.13 see
linux commit 6140be90ec70c39fa844741ca3cc807dd0866394
fs/xattr: add *at family syscalls
add open_tree_attr from linux v6.15 see
linux commit c4a16820d90199409c9bf01c4f794e1e9e8d8fd8
fs: add open_tree_attr()
add file_{get,set}attr from linux v6.17 see
linux commit be7efb2d20d67f334a7de2aef77ae6c69367e646
fs: introduce file_getattr and file_setattr syscalls
on x86 add uprobe from linux v6.18 see
linux commit 56101b69c9190667f473b9f93f8b6d8209aaa816
uprobes/x86: Add uprobe syscall to speed up uprobe
add listns from linux v6.19 see
linux commit b36d4b6aa88ef039647228b98c59a875e92f8c8e
arch: hookup listns() system call
the bits file is retained, but as a single generic version, to allow
for the unlikely future possibility of letting a new arch define
something differently.
previously, only a few archs defined it here. this change makes the
presence consistent across all archs, and reduces the amount of header
duplication (and potential for future inconsistency) between archs.
the linux fchmodat syscall lacks a flag argument that is necessary to
implement the posix api, see
linux commit 09da082b07bbae1c11d9560c8502800039aebcea
fs: Add fchmodat2()
linux commit 78252deb023cf0879256fcfbafe37022c390762b
arch: Register fchmodat2, usually as syscall 452
see
linux commit cf264e1329fb0307e044f7675849f9f38b44c11a
cachestat: implement cachestat syscall
linux commit 946e697c69ffeeefdd84dad90eac307284df46be
cachestat: wire up cachestat for other architectures
see
linux commit c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0
mm/mempolicy: add set_mempolicy_home_node syscall
linux commit 21b084fdf2a49ca1634e8e360e9ab6f9ff0dee11
mm/mempolicy: wire up syscall set_mempolicy_home_node
see
linux commit 039c0ec9bb77446d7ada7f55f90af9299b28ca49
futex,x86: Wire up sys_futex_waitv()
linux commit ea7c45fde5aa3e761aaddb7902a31a95cb120e7b
futex,arm: Wire up sys_futex_waitv()
linux commit b3ff2881ba18b852f79f5476d7631940071f1adb
MIPS: syscalls: Wire up futex_waitv syscall
linux commit 6c122360cf2f4c5a856fcbd79b4485b7baec942a
s390: wire up sys_futex_waitv system call
linux commit a0eb2da92b715d0c97b96b09979689ea09faefe6
futex: Wireup futex_waitv syscall
see
linux commit 884a7e5964e06ed93c7771c0d7cf19c09a8946f1
mm: introduce process_mrelease system call
linux commit dce49103962840dd61423d7627748d6c558d58c5
mm: wire up syscall process_mrelease
see
linux commit 7bb7f2ac24a028b20fca466b9633847b289b156a
arch, mm: wire up memfd_secret system call where relevant
linux commit 1507f51255c9ff07d75909a84e7c0d7f3c4b2f49
mm: introduce memfd_secret system call to create "secret" memory areas
linux commit b633896314c0f78f2b4eb7b19a530d68f2a35445
tools headers UAPI: Sync s390 syscall table file that wires up the
memfd_secret syscall
see
linux commit a49f4f81cb48925e8d7cbd9e59068f516e984144
arch: Wire up Landlock syscalls
linuxcommit 17ae69aba89dbfa2139b7f8024b757ab3cc42f59
Merge tag 'landlock_v34' of ... jmorris/linux-security
Landlock provides for unprivileged application sandboxing. The goal of
Landlock is to enable to restrict ambient rights (e.g. global filesystem
access) for a set of processes. Landlock is inspired by seccomp-bpf but
instead of filtering syscalls and their raw arguments, a Landlock rule
can restrict the use of kernel objects like file hierarchies, according
to the kernel semantic.
new syscall to change the properties of a mount or a mount tree using
file descriptors which the new mount api is based on, see
linux commit 2a1867219c7b27f928e2545782b86daaf9ad50bd
fs: add mount_setattr()
see
linux commit b0a0c2615f6f199a656ed8549d7dce625d77aa77
epoll: wire up syscall epoll_pwait2
linux commit 58169a52ebc9a733aeb5bea857bc5daa71a301bb
epoll: add syscall epoll_pwait2
epoll_wait with struct timespec timeout instead of int. no time32 variant.
mainly added to linux to allow a central process management service in
android to give MADV_COLD|PAGEOUT hints for other processes, see
linux commit ecb8ac8b1f146915aa6b96449b66dd48984caacc
mm/madvise: introduce process_madvise() syscall: an external memory
hinting API
see
linux commit 9b4feb630e8e9801603f3cab3a36369e3c1cf88d
arch: wire-up close_range()
linux commit 278a5fbaed89dacd04e9d052f4594ffd0e0585de
open: add close_range()
the linux faccessat syscall lacks a flag argument that is necessary
to implement the posix api, see
linux commit c8ffd8bcdd28296a198f237cc595148a8d4adfbe
vfs: add faccessat2 syscall
also added clone3 on sh and m68k, on sh it's still missing (not
yet wired up), but reserved so safe to add.
see
linux commit fddb5d430ad9fa91b49b1d34d0202ffe2fa0e179
open: introduce openat2(2) syscall
linux commit 9a2cef09c801de54feecd912303ace5c27237f12
arch: wire up pidfd_getfd syscall
linux commit 8649c322f75c96e7ced2fec201e123b2b073bf09
pid: Implement pidfd_getfd syscall
linux commit e8bb2a2a1d51511e6b3f7e08125d52ec73c11139
m68k: Wire up clone3() syscall
prior to commit 685e40bb09, x86_64 was
correctly passing O_LARGEFILE to SYS_open; it was removed (defined to
0 in the public header, and changed to use the public definition) as
part of that change, probably out of a mistaken belief that it's not
needed.
however, on a mixed system with 32-bit and 64-bit binaries, it's
important that all files be opened with O_LARGEFILE, even if the
opening process is 64-bit, in case a descriptor is passed to a 32-bit
process. otherwise, attempts to access past 2GB in the 32-bit process
could produce EOVERFLOW.
most 64-bit archs added later got this right alread, except for
mips64. x32 was also affected. there are now fixed.
the adjustment made is entirely a function of TLS_ABOVE_TP and
TP_OFFSET. aside from avoiding repetition of the TP_OFFSET value and
arithmetic, this change makes pthread_arch.h independent of the
definition of struct __pthread from pthread_impl.h. this in turn will
allow inclusion of pthread_arch.h to be moved to the top of
pthread_impl.h so that it can influence the definition of the
structure.
previously, arch files were very inconsistent about the type used for
the thread pointer. this change unifies the new __get_tp interface to
always use uintptr_t, which is the most correct when performing
arithmetic that may involve addresses outside the actual pointed-to
object (due to TP_OFFSET).
the syscall number is reserved on all targets, but it is not wired up
on all targets, see
linux commit 8f6ccf6159aed1f04c6d179f61f6fb2691261e84
Merge tag 'clone3-v5.3' of ... brauner/linux
linux commit 8f3220a806545442f6f26195bc491520f5276e7c
arch: wire-up clone3() syscall
linux commit 7f192e3cd316ba58c88dfa26796cf77789dd9872
fork: add clone3
see
linux commit 7615d9e1780e26e0178c93c55b73309a5dc093d7
arch: wire-up pidfd_open()
linux commit 32fcb426ec001cb6d5a4a195091a8486ea77e2df
pid: add pidfd_open()
now that all 32-bit archs have 64-bit time_t (and suseconds_t), the
arch-provided _Int64 macro (long or long long, as appropriate) can be
used to define them, and arch-specific definitions are no longer
needed.
these structures can now be defined generically in terms of endianness
and long size. previously, the 32-bit archs all shared a common
definition from the generic bits header, and each 64-bit arch had to
repeat the 64-bit version, with endian conditionals if the arch had
variants of each endianness.
I would prefer getting rid of the preprocessor conditionals for
padding and instead using unnamed bitfield members, like commit
9b2921bea1 did for struct timespec.
however, at present sendmsg, recvmsg, and recvmmsg need access to the
padding members by name to zero them. this could perhaps be cleaned up
in the future.
policy has long been that these definitions are purely a function of
whether long/pointer is 32- or 64-bit, and that they are not allowed
to vary per-arch. move the definition to the shared alltypes.h.in
fragment, using integer constant expressions in terms of sizeof to
vary the array dimensions appropriately. I'm not sure whether this is
more or less ugly than using preprocessor conditionals and two sets of
definitions here, but either way is a lot less ugly than repeating the
same thing for every arch.
LLONG_MAX is uniform for all archs we support and plenty of header and
code level logic assumes it is, so it does not make sense for limits.h
bits mechanism to pretend it's variable.
LONG_BIT can be defined in terms of LONG_MAX; there's no reason to put
it in bits.
by moving LONG_MAX definition to __LONG_MAX in alltypes.h and moving
LLONG_MAX out of bits, there are now no plain-C limits that are
defined in the bits header, so the bits header only needs to be
included in the POSIX or extended profiles. this allows the feature
test macro logic to be removed from the bits header, facilitating a
long-term goal of getting such logic out of bits.
having __LONG_MAX in alltypes.h will allow further generalization of
headers.
archs without a constant PAGESIZE no longer need bits/limits.h at all.
this change is motivated by the intersection of several factors.
presently, despite being a nonstandard header, endian.h is exposing
the unprefixed byte order macros and functions only if _BSD_SOURCE or
_GNU_SOURCE is defined. this is to accommodate use of endian.h from
other headers, including bits headers, which need to define structure
layout in terms of endianness. with time64 switch-over, even more
headers will need to do this.
at the same time, the resolution of Austin Group issue 162 makes
endian.h a standard header for POSIX-future, requiring that it expose
the unprefixed macros and the functions even in standards-conforming
profiles. changes to meet this new requirement would break existing
internal usage of endian.h by causing it to violate namespace where
it's used.
instead, have the arch's alltypes.h define __BYTE_ORDER, either as a
fixed constant or depending on the right arch-specific predefined
macros for determining endianness. explicit literals 1234 and 4321 are
used instead of __LITTLE_ENDIAN and __BIG_ENDIAN so that there's no
danger of getting the wrong result if a macro is undefined and
implicitly evaluates to 0 at the preprocessor level.
the powerpc (32-bit) bits/endian.h being removed had logic for varying
endianness, but our powerpc arch has never supported that and has
always been big-endian-only. this logic is not carried over to the new
__BYTE_ORDER definition in alltypes.h.
now that commit f7f1079796 removed the
legacy i386 conditional definition, va_list is in no way
arch-specific, and has no reason to be in the future. move it to the
shared part of alltypes.h.in
new mount api syscalls were added, same numers on all targets, see
linux commit a07b20004793d8926f78d63eb5980559f7813404
vfs: syscall: Add open_tree(2) to reference or clone a mount
linux commit 2db154b3ea8e14b04fee23e3fdfd5e9d17fbc6ae
vfs: syscall: Add move_mount(2) to move mounts around
linux commit 24dcb3d90a1f67fe08c68a004af37df059d74005
vfs: syscall: Add fsopen() to prepare for superblock creation
linux commit ecdab150fddb42fe6a739335257949220033b782
vfs: syscall: Add fsconfig() for configuring and managing a context
linux commit 93766fbd2696c2c4453dd8e1070977e9cd4e6b6d
vfs: syscall: Add fsmount() to create a mount for a superblock
linux commit cf3cba4a429be43e5527a3f78859b1bfd9ebc5fb
vfs: syscall: Add fspick() to select a superblock for reconfiguration
linux commit 9c8ad7a2ff0bfe58f019ec0abc1fb965114dde7d
uapi, x86: Fix the syscall numbering of the mount API syscalls [ver #2]
linux commit d8076bdb56af5e5918376cd1573a6b0007fc1a89
uapi: Wire up the mount API syscalls on non-x86 arches [ver #2]
previously these differed from generic because they needed their own
definitions of IPC_64. now that it's no longer in public header,
they're identical.
the definition of the IPC_64 macro controls the interface between libc
and the kernel through syscalls; it's not a public API. the meaning is
rather obscure. long ago, Linux's sysvipc *id_ds structures used
16-bit uids/gids and wrong types for a few other fields. this was in
the libc5 era, before glibc. the IPC_64 flag (64 is a misnomer; it's
more like 32) tells the kernel to use the modern[-ish] versions of the
structures.
the definition of IPC_64 has nothing to do with whether the arch is
32- or 64-bit. rather, due to either historical accident or
intentional obnoxiousness, the kernel only accepts and masks off the
0x100 IPC_64 flag conditional on CONFIG_ARCH_WANT_IPC_PARSE_VERSION,
i.e. for archs that want to provide, or that accidentally provided,
both. for archs which don't define this option, no masking is
performed and commands with the 0x100 bit set will fail as invalid. so
ultimately, the definition is just a matter of matching an arbitrary
switch defined per-arch in the kernel.
presently, all archs/ABIs have struct stat matching the kernel
stat[64] type, except mips/mipsn32/mips64 which do conversion hacks in
syscall_arch.h to work around bugs in the kernel type. this patch
completely decouples them and adds a translation step to the success
path of fstatat. at present, this is just a gratuitous copying, but it
opens up multiple possibilities for future support for 64-bit time_t
on 32-bit archs and for cleaned-up/unified ABIs.
for clarity, the mips hacks are not yet removed in this commit, so the
mips kstat structs still correspond to the output of the hacks in
their syscall_arch.h files, not the raw kernel type. a subsequent
commit will fix this.
syscall numbers are now synced up across targets (starting from 403 the
numbers are the same on all targets other than an arch specific offset)
IPC syscalls sem*, shm*, msg* got added where they were missing (except
for semop: only semtimedop got added), the new semctl, shmctl, msgctl
imply IPC_64, see
linux commit 0d6040d4681735dfc47565de288525de405a5c99
arch: add split IPC system calls where needed
new 64bit time_t syscall variants got added on 32bit targets, see
linux commit 48166e6ea47d23984f0b481ca199250e1ce0730a
y2038: add 64-bit time_t syscalls to all 32-bit architectures
new async io syscalls got added, see
linux commit 2b188cc1bb857a9d4701ae59aa7768b5124e262e
Add io_uring IO interface
linux commit edafccee56ff31678a091ddb7219aba9b28bc3cb
io_uring: add support for pre-mapped user IO buffers
a new syscall got added that uses the fd of /proc/<pid> as a stable
handle for processes: allows sending signals without pid reuse issues,
intended to eventually replace rt_sigqueueinfo, kill, tgkill and
rt_tgsigqueueinfo, see
linux commit 3eb39f47934f9d5a3027fe00d906a45fe3a15fad
signal: add pidfd_send_signal() syscall
on some targets (arm, m68k, s390x, sh) some previously missing syscall
numbers got added as well.
this will allow the compiler to cache and reuse the result, meaning we
no longer have to take care not to load it more than once for the sake
of archs where the load may be expensive.
depends on commit 1c84c99913 for
correctness, since otherwise the compiler could hoist loads during
stage 3 of dynamic linking before the initial thread-pointer setup.
these were overlooked in the declarations overhaul work because they
are not properly declared, and the current framework even allows their
declared types to vary by arch. at some point this should be cleaned
up, but I'm not sure what the right way would be.
sys/ptrace.h is target specific, use bits/ptrace.h to add target
specific macro definitions.
these macros are kept in the generic sys/ptrace.h even though some
targets don't support them:
PTRACE_GETREGS
PTRACE_SETREGS
PTRACE_GETFPREGS
PTRACE_SETFPREGS
PTRACE_GETFPXREGS
PTRACE_SETFPXREGS
so no macro definition got removed in this patch on any target. only
s390x has a numerically conflicting macro definition (PTRACE_SINGLEBLOCK).
the PT_ aliases follow glibc headers, otherwise the definitions come
from linux uapi headers except ones that are skipped in glibc and
there is no real kernel support (s390x PTRACE_*_AREA) or need special
type definitions (mips PTRACE_*_WATCH_*) or only relevant for linux
2.4 compatibility (PTRACE_OLDSETOPTIONS).
PAGESIZE is actually the version defined in POSIX base, with PAGE_SIZE
being in the XSI option. use PAGESIZE as the underlying definition to
facilitate making exposure of PAGE_SIZE conditional.
counts leading zero bits of a 64bit int, undefined on zero input.
(has nothing to do with atomics, added to atomic.h so target specific
helper functions are together.)
there is a logarithmic generic implementation and another in terms of
a 32bit a_clz_32 on targets where that's available.
when _GNU_SOURCE is defined, which is always the case when compiling
c++ with gcc, these macros for the the indices in gregset_t are
exposed and likely to clash with applications. by using enum constants
rather than macros defined with integer literals, we can make the
clash slightly less likely to break software. the macros are still
defined in case anything checks for them with #ifdef, but they're
defined to expand to themselves so that non-file-scope (e.g.
namespaced) identifiers by the same names still work.
for the sake of avoiding mistakes, the changes were generated with sed
via the command:
sed -i -e 's/#define *\(REG_[A-Z_0-9]\{1,\}\) *\([0-9]\{1,\}\)'\
'/enum { \1 = \2 };\n#define \1 \1/' \
arch/i386/bits/signal.h arch/x86_64/bits/signal.h arch/x32/bits/signal.h
Szabolcs Nagy
Alex Rønne Petersen
Rich Felker
Gaël PORTAY