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flatpak/subprojects/libglnx/glnx-missing-syscall.h
Simon McVittie 1293a6441b Update subtree: libglnx 2026-04-07 
* fdio: Avoid relying on VLAs or gcc-specific constant-folding
* errors: Fix URL to an old libgsystem commit
* lockfile: Assert non-null path in make_lock_file for analyzers
* backports: Add g_clear_fd
* glnx-errors.h: add glnx_fd_throw[_*] variants
* fdio: Add glnx_fd_reopen
* local-alloc: Remove duplicate definition of glnx_unref_object
* fdio: Add glnx_statx
* chase: Add glnx_chaseat which functions similar to openat2
* chase: Add glnx_chase_and_statxat

Signed-off-by: Simon McVittie <smcv@collabora.com>
2026-04-07 20:41:49 +01:00

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/***
This file was originally part of systemd.
Copyright 2010 Lennart Poettering
Copyright 2016 Zbigniew Jędrzejewski-Szmek
SPDX-License-Identifier: LGPL-2.1-or-later
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
/* Missing glibc definitions to access certain kernel APIs.
This file is last updated from systemd git:
commit 71e5200f94b22589922704aa4abdf95d4fe2e528
Author: Daniel Mack <daniel@zonque.org>
AuthorDate: Tue Oct 18 17:57:10 2016 +0200
Commit: Lennart Poettering <lennart@poettering.net>
CommitDate: Fri Sep 22 15:24:54 2017 +0200
Add abstraction model for BPF programs
*/
#include "libglnx-config.h"
#include <glib.h>
#include <stdint.h>
#if !HAVE_DECL_RENAMEAT2
# ifndef __NR_renameat2
# if defined __x86_64__
# define __NR_renameat2 316
# elif defined __arm__
# define __NR_renameat2 382
# elif defined __aarch64__
# define __NR_renameat2 276
# elif defined _MIPS_SIM
# if _MIPS_SIM == _MIPS_SIM_ABI32
# define __NR_renameat2 4351
# endif
# if _MIPS_SIM == _MIPS_SIM_NABI32
# define __NR_renameat2 6315
# endif
# if _MIPS_SIM == _MIPS_SIM_ABI64
# define __NR_renameat2 5311
# endif
# elif defined __i386__
# define __NR_renameat2 353
# elif defined __powerpc64__
# define __NR_renameat2 357
# elif defined __s390__ || defined __s390x__
# define __NR_renameat2 347
# elif defined __arc__
# define __NR_renameat2 276
# else
# warning "__NR_renameat2 unknown for your architecture"
# endif
# endif
static inline int renameat2(int oldfd, const char *oldname, int newfd, const char *newname, unsigned flags) {
# ifdef __NR_renameat2
return syscall(__NR_renameat2, oldfd, oldname, newfd, newname, flags);
# else
errno = ENOSYS;
return -1;
# endif
}
#endif
#if !HAVE_DECL_MEMFD_CREATE
# ifndef __NR_memfd_create
# if defined __x86_64__
# define __NR_memfd_create 319
# elif defined __arm__
# define __NR_memfd_create 385
# elif defined __aarch64__
# define __NR_memfd_create 279
# elif defined __s390__
# define __NR_memfd_create 350
# elif defined _MIPS_SIM
# if _MIPS_SIM == _MIPS_SIM_ABI32
# define __NR_memfd_create 4354
# endif
# if _MIPS_SIM == _MIPS_SIM_NABI32
# define __NR_memfd_create 6318
# endif
# if _MIPS_SIM == _MIPS_SIM_ABI64
# define __NR_memfd_create 5314
# endif
# elif defined __i386__
# define __NR_memfd_create 356
# elif defined __arc__
# define __NR_memfd_create 279
# else
# warning "__NR_memfd_create unknown for your architecture"
# endif
# endif
static inline int memfd_create(const char *name, unsigned int flags) {
# ifdef __NR_memfd_create
return syscall(__NR_memfd_create, name, flags);
# else
errno = ENOSYS;
return -1;
# endif
}
#endif
/* Copied from systemd git:
commit 6bda23dd6aaba50cf8e3e6024248cf736cc443ca
Author: Yu Watanabe <watanabe.yu+github@gmail.com>
AuthorDate: Thu Jul 27 20:22:54 2017 +0900
Commit: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
CommitDate: Thu Jul 27 07:22:54 2017 -0400
*/
#if !HAVE_DECL_COPY_FILE_RANGE
# ifndef __NR_copy_file_range
# if defined(__x86_64__)
# define __NR_copy_file_range 326
# elif defined(__i386__)
# define __NR_copy_file_range 377
# elif defined __s390__
# define __NR_copy_file_range 375
# elif defined __arm__
# define __NR_copy_file_range 391
# elif defined __aarch64__
# define __NR_copy_file_range 285
# elif defined __powerpc__
# define __NR_copy_file_range 379
# elif defined __arc__
# define __NR_copy_file_range 285
# else
# warning "__NR_copy_file_range not defined for your architecture"
# endif
# endif
static inline ssize_t missing_copy_file_range(int fd_in, loff_t *off_in,
int fd_out, loff_t *off_out,
size_t len,
unsigned int flags) {
# ifdef __NR_copy_file_range
return syscall(__NR_copy_file_range, fd_in, off_in, fd_out, off_out, len, flags);
# else
errno = ENOSYS;
return -1;
# endif
}
# define copy_file_range missing_copy_file_range
#endif
#ifndef __IGNORE_close_range
# if defined(__aarch64__)
# define systemd_NR_close_range 436
# elif defined(__alpha__)
# define systemd_NR_close_range 546
# elif defined(__arc__) || defined(__tilegx__)
# define systemd_NR_close_range 436
# elif defined(__arm__)
# define systemd_NR_close_range 436
# elif defined(__i386__)
# define systemd_NR_close_range 436
# elif defined(__ia64__)
# define systemd_NR_close_range 1460
# elif defined(__loongarch_lp64)
# define systemd_NR_close_range 436
# elif defined(__m68k__)
# define systemd_NR_close_range 436
# elif defined(_MIPS_SIM)
# if _MIPS_SIM == _MIPS_SIM_ABI32
# define systemd_NR_close_range 4436
# elif _MIPS_SIM == _MIPS_SIM_NABI32
# define systemd_NR_close_range 6436
# elif _MIPS_SIM == _MIPS_SIM_ABI64
# define systemd_NR_close_range 5436
# else
# error "Unknown MIPS ABI"
# endif
# elif defined(__hppa__)
# define systemd_NR_close_range 436
# elif defined(__powerpc__)
# define systemd_NR_close_range 436
# elif defined(__riscv)
# if __riscv_xlen == 32
# define systemd_NR_close_range 436
# elif __riscv_xlen == 64
# define systemd_NR_close_range 436
# else
# error "Unknown RISC-V ABI"
# endif
# elif defined(__s390__)
# define systemd_NR_close_range 436
# elif defined(__sparc__)
# define systemd_NR_close_range 436
# elif defined(__x86_64__)
# if defined(__ILP32__)
# define systemd_NR_close_range (436 | /* __X32_SYSCALL_BIT */ 0x40000000)
# else
# define systemd_NR_close_range 436
# endif
# elif !defined(missing_arch_template)
# warning "close_range() syscall number is unknown for your architecture"
# endif
/* may be an (invalid) negative number due to libseccomp, see PR 13319 */
# if defined __NR_close_range && __NR_close_range >= 0
# if defined systemd_NR_close_range
G_STATIC_ASSERT(__NR_close_range == systemd_NR_close_range);
# endif
# else
# if defined __NR_close_range
# undef __NR_close_range
# endif
# if defined systemd_NR_close_range && systemd_NR_close_range >= 0
# define __NR_close_range systemd_NR_close_range
# endif
# endif
#endif
#if !defined(HAVE_CLOSE_RANGE) && defined(__NR_close_range)
static inline int
inline_close_range (unsigned int low,
unsigned int high,
int flags)
{
return syscall (__NR_close_range, low, high, flags);
}
#define close_range(low, high, flags) inline_close_range(low, high, flags)
#define HAVE_CLOSE_RANGE
#endif
#ifndef __IGNORE_statx
# if defined(__aarch64__)
# define systemd_NR_statx 291
# elif defined(__alpha__)
# define systemd_NR_statx 522
# elif defined(__arc__) || defined(__tilegx__)
# define systemd_NR_statx 291
# elif defined(__arm__)
# define systemd_NR_statx 397
# elif defined(__i386__)
# define systemd_NR_statx 383
# elif defined(__ia64__)
# define systemd_NR_statx 1350
# elif defined(__loongarch_lp64)
# define systemd_NR_statx 291
# elif defined(__m68k__)
# define systemd_NR_statx 379
# elif defined(_MIPS_SIM)
# if _MIPS_SIM == _MIPS_SIM_ABI32
# define systemd_NR_statx 4366
# elif _MIPS_SIM == _MIPS_SIM_NABI32
# define systemd_NR_statx 6330
# elif _MIPS_SIM == _MIPS_SIM_ABI64
# define systemd_NR_statx 5326
# else
# error "Unknown MIPS ABI"
# endif
# elif defined(__hppa__)
# define systemd_NR_statx 349
# elif defined(__powerpc__)
# define systemd_NR_statx 383
# elif defined(__riscv)
# if __riscv_xlen == 32
# define systemd_NR_statx 291
# elif __riscv_xlen == 64
# define systemd_NR_statx 291
# else
# error "Unknown RISC-V ABI"
# endif
# elif defined(__s390__)
# define systemd_NR_statx 379
# elif defined(__sparc__)
# define systemd_NR_statx 360
# elif defined(__x86_64__)
# if defined(__ILP32__)
# define systemd_NR_statx (332 | /* __X32_SYSCALL_BIT */ 0x40000000)
# else
# define systemd_NR_statx 332
# endif
# elif !defined(missing_arch_template)
# warning "statx() syscall number is unknown for your architecture"
# endif
/* may be an (invalid) negative number due to libseccomp, see PR 13319 */
# if defined __NR_statx && __NR_statx >= 0
# if defined systemd_NR_statx
G_STATIC_ASSERT (__NR_statx == systemd_NR_statx);
# endif
# else
# if defined __NR_statx
# undef __NR_statx
# endif
# if defined systemd_NR_statx && systemd_NR_statx >= 0
# define __NR_statx systemd_NR_statx
# endif
# endif
#endif
#if !defined(HAVE_GLNX_STATX) && defined(__NR_statx)
#define GLNX_STATX_TYPE 0x00000001U /* Want/got stx_mode & S_IFMT */
#define GLNX_STATX_MODE 0x00000002U /* Want/got stx_mode & ~S_IFMT */
#define GLNX_STATX_NLINK 0x00000004U /* Want/got stx_nlink */
#define GLNX_STATX_UID 0x00000008U /* Want/got stx_uid */
#define GLNX_STATX_GID 0x00000010U /* Want/got stx_gid */
#define GLNX_STATX_ATIME 0x00000020U /* Want/got stx_atime */
#define GLNX_STATX_MTIME 0x00000040U /* Want/got stx_mtime */
#define GLNX_STATX_CTIME 0x00000080U /* Want/got stx_ctime */
#define GLNX_STATX_INO 0x00000100U /* Want/got stx_ino */
#define GLNX_STATX_SIZE 0x00000200U /* Want/got stx_size */
#define GLNX_STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */
#define GLNX_STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */
#define GLNX_STATX_BTIME 0x00000800U /* Want/got stx_btime */
#define GLNX_STATX_MNT_ID 0x00001000U /* Got stx_mnt_id */
#define GLNX_STATX_DIOALIGN 0x00002000U /* Want/got direct I/O alignment info */
#define GLNX_STATX_MNT_ID_UNIQUE 0x00004000U /* Want/got extended stx_mount_id */
#define GLNX_STATX_SUBVOL 0x00008000U /* Want/got stx_subvol */
#define GLNX_STATX_WRITE_ATOMIC 0x00010000U /* Want/got atomic_write_* fields */
#define GLNX_STATX_DIO_READ_ALIGN 0x00020000U /* Want/got dio read alignment info */
#define GLNX_STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */
struct glnx_statx_timestamp
{
int64_t tv_sec;
uint32_t tv_nsec;
int32_t __reserved;
};
struct glnx_statx
{
uint32_t stx_mask;
uint32_t stx_blksize;
uint64_t stx_attributes;
uint32_t stx_nlink;
uint32_t stx_uid;
uint32_t stx_gid;
uint16_t stx_mode;
uint16_t __spare0[1];
uint64_t stx_ino;
uint64_t stx_size;
uint64_t stx_blocks;
uint64_t stx_attributes_mask;
struct glnx_statx_timestamp stx_atime;
struct glnx_statx_timestamp stx_btime;
struct glnx_statx_timestamp stx_ctime;
struct glnx_statx_timestamp stx_mtime;
uint32_t stx_rdev_major;
uint32_t stx_rdev_minor;
uint32_t stx_dev_major;
uint32_t stx_dev_minor;
uint64_t stx_mnt_id;
uint32_t stx_dio_mem_align;
uint32_t stx_dio_offset_align;
uint64_t stx_subvol;
uint32_t stx_atomic_write_unit_min;
uint32_t stx_atomic_write_unit_max;
uint32_t stx_atomic_write_segments_max;
uint32_t stx_dio_read_offset_align;
uint32_t stx_atomic_write_unit_max_opt;
uint32_t __spare2[1];
uint64_t __spare3[8];
};
static inline int
glnx_statx_syscall (int dfd,
const char *filename,
unsigned flags,
unsigned int mask,
struct glnx_statx *buf)
{
memset (buf, 0xbf, sizeof (*buf));
return syscall (__NR_statx, dfd, filename, flags, mask, buf);
return 0;
}
#define HAVE_GLNX_STATX
#endif
/* Copied from systemd git: ff83795469 ("boot: Improve log message")
* - open_tree
* - openat2
*/
#ifndef __IGNORE_open_tree
# if defined(__aarch64__)
# define systemd_NR_open_tree 428
# elif defined(__alpha__)
# define systemd_NR_open_tree 538
# elif defined(__arc__) || defined(__tilegx__)
# define systemd_NR_open_tree 428
# elif defined(__arm__)
# define systemd_NR_open_tree 428
# elif defined(__i386__)
# define systemd_NR_open_tree 428
# elif defined(__ia64__)
# define systemd_NR_open_tree 1452
# elif defined(__loongarch_lp64)
# define systemd_NR_open_tree 428
# elif defined(__m68k__)
# define systemd_NR_open_tree 428
# elif defined(_MIPS_SIM)
# if _MIPS_SIM == _MIPS_SIM_ABI32
# define systemd_NR_open_tree 4428
# elif _MIPS_SIM == _MIPS_SIM_NABI32
# define systemd_NR_open_tree 6428
# elif _MIPS_SIM == _MIPS_SIM_ABI64
# define systemd_NR_open_tree 5428
# else
# error "Unknown MIPS ABI"
# endif
# elif defined(__hppa__)
# define systemd_NR_open_tree 428
# elif defined(__powerpc__)
# define systemd_NR_open_tree 428
# elif defined(__riscv)
# if __riscv_xlen == 32
# define systemd_NR_open_tree 428
# elif __riscv_xlen == 64
# define systemd_NR_open_tree 428
# else
# error "Unknown RISC-V ABI"
# endif
# elif defined(__s390__)
# define systemd_NR_open_tree 428
# elif defined(__sparc__)
# define systemd_NR_open_tree 428
# elif defined(__x86_64__)
# if defined(__ILP32__)
# define systemd_NR_open_tree (428 | /* __X32_SYSCALL_BIT */ 0x40000000)
# else
# define systemd_NR_open_tree 428
# endif
# elif !defined(missing_arch_template)
# warning "open_tree() syscall number is unknown for your architecture"
# endif
/* may be an (invalid) negative number due to libseccomp, see PR 13319 */
# if defined __NR_open_tree && __NR_open_tree >= 0
# if defined systemd_NR_open_tree
G_STATIC_ASSERT (__NR_open_tree == systemd_NR_open_tree);
# endif
# else
# if defined __NR_open_tree
# undef __NR_open_tree
# endif
# if defined systemd_NR_open_tree && systemd_NR_open_tree >= 0
# define __NR_open_tree systemd_NR_open_tree
# endif
# endif
#endif
#if !defined(HAVE_OPEN_TREE) && defined(__NR_open_tree)
#ifndef OPEN_TREE_CLONE
#define OPEN_TREE_CLONE 1
#endif
#ifndef OPEN_TREE_CLOEXEC
#define OPEN_TREE_CLOEXEC O_CLOEXEC
#endif
static inline int
inline_open_tree (int dfd,
const char *filename,
unsigned flags)
{
return syscall(__NR_open_tree, dfd, filename, flags);
}
#define open_tree inline_open_tree
#define HAVE_OPEN_TREE
#endif
#ifndef __IGNORE_openat2
# if defined(__aarch64__)
# define systemd_NR_openat2 437
# elif defined(__alpha__)
# define systemd_NR_openat2 547
# elif defined(__arc__) || defined(__tilegx__)
# define systemd_NR_openat2 437
# elif defined(__arm__)
# define systemd_NR_openat2 437
# elif defined(__i386__)
# define systemd_NR_openat2 437
# elif defined(__ia64__)
# define systemd_NR_openat2 1461
# elif defined(__loongarch_lp64)
# define systemd_NR_openat2 437
# elif defined(__m68k__)
# define systemd_NR_openat2 437
# elif defined(_MIPS_SIM)
# if _MIPS_SIM == _MIPS_SIM_ABI32
# define systemd_NR_openat2 4437
# elif _MIPS_SIM == _MIPS_SIM_NABI32
# define systemd_NR_openat2 6437
# elif _MIPS_SIM == _MIPS_SIM_ABI64
# define systemd_NR_openat2 5437
# else
# error "Unknown MIPS ABI"
# endif
# elif defined(__hppa__)
# define systemd_NR_openat2 437
# elif defined(__powerpc__)
# define systemd_NR_openat2 437
# elif defined(__riscv)
# if __riscv_xlen == 32
# define systemd_NR_openat2 437
# elif __riscv_xlen == 64
# define systemd_NR_openat2 437
# else
# error "Unknown RISC-V ABI"
# endif
# elif defined(__s390__)
# define systemd_NR_openat2 437
# elif defined(__sparc__)
# define systemd_NR_openat2 437
# elif defined(__x86_64__)
# if defined(__ILP32__)
# define systemd_NR_openat2 (437 | /* __X32_SYSCALL_BIT */ 0x40000000)
# else
# define systemd_NR_openat2 437
# endif
# elif !defined(missing_arch_template)
# warning "openat2() syscall number is unknown for your architecture"
# endif
/* may be an (invalid) negative number due to libseccomp, see PR 13319 */
# if defined __NR_openat2 && __NR_openat2 >= 0
# if defined systemd_NR_openat2
G_STATIC_ASSERT (__NR_openat2 == systemd_NR_openat2);
# endif
# else
# if defined __NR_openat2
# undef __NR_openat2
# endif
# if defined systemd_NR_openat2 && systemd_NR_openat2 >= 0
# define __NR_openat2 systemd_NR_openat2
# endif
# endif
#endif
#if !defined(HAVE_OPENAT2) && defined(__NR_openat2)
#ifndef RESOLVE_NO_XDEV
#define RESOLVE_NO_XDEV 0x01
#endif
#ifndef RESOLVE_NO_MAGICLINKS
#define RESOLVE_NO_MAGICLINKS 0x02
#endif
#ifndef RESOLVE_NO_SYMLINKS
#define RESOLVE_NO_SYMLINKS 0x04
#endif
#ifndef RESOLVE_BENEATH
#define RESOLVE_BENEATH 0x08
#endif
#ifndef RESOLVE_IN_ROOT
#define RESOLVE_IN_ROOT 0x10
#endif
#ifndef RESOLVE_CACHED
#define RESOLVE_CACHED 0x20
#endif
struct inline_open_how {
uint64_t flags;
uint64_t mode;
uint64_t resolve;
};
#define open_how inline_open_how
static inline int
inline_openat2 (int dfd,
const char *filename,
void *buffer,
size_t size)
{
return syscall(__NR_openat2, dfd, filename, buffer, size);
}
#define openat2 inline_openat2
#define HAVE_OPENAT2
#endif
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