mirror of
https://github.com/morgan9e/systemd
synced 2026-04-15 08:56:15 +09:00
6b557580fe
It is defined since glibc-2.14 (46998f745736b3c8df5901a27b6c2a19f5cc5e98), and the value was never changed.
482 lines
14 KiB
C
482 lines
14 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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/* Missing glibc definitions to access certain kernel APIs */
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#include <errno.h>
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#include <fcntl.h>
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#include <linux/time_types.h>
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#include <signal.h>
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#include <sys/syscall.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#ifdef ARCH_MIPS
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#include <asm/sgidefs.h>
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#endif
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#include "macro.h"
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#include "missing_keyctl.h"
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#include "missing_sched.h"
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#include "missing_syscall_def.h"
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/* ======================================================================= */
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#if !HAVE_FCHMODAT2
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/* since kernel v6.6 (78252deb023cf0879256fcfbafe37022c390762b) */
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static inline int missing_fchmodat2(int dirfd, const char *path, mode_t mode, int flags) {
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return syscall(__NR_fchmodat2, dirfd, path, mode, flags);
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}
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# define fchmodat2 missing_fchmodat2
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#endif
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/* ======================================================================= */
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#if !HAVE_PIVOT_ROOT
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static inline int missing_pivot_root(const char *new_root, const char *put_old) {
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return syscall(__NR_pivot_root, new_root, put_old);
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}
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# define pivot_root missing_pivot_root
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#endif
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/* ======================================================================= */
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#if !HAVE_IOPRIO_GET
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static inline int missing_ioprio_get(int which, int who) {
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return syscall(__NR_ioprio_get, which, who);
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}
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# define ioprio_get missing_ioprio_get
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#endif
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/* ======================================================================= */
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#if !HAVE_IOPRIO_SET
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static inline int missing_ioprio_set(int which, int who, int ioprio) {
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return syscall(__NR_ioprio_set, which, who, ioprio);
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}
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# define ioprio_set missing_ioprio_set
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#endif
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/* ======================================================================= */
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static inline pid_t raw_getpid(void) {
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#if defined(__alpha__)
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return (pid_t) syscall(__NR_getxpid);
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#else
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return (pid_t) syscall(__NR_getpid);
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#endif
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}
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/* ======================================================================= */
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#if !HAVE_KCMP
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static inline int missing_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
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return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
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}
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# define kcmp missing_kcmp
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#endif
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/* ======================================================================= */
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#if !HAVE_KEYCTL
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static inline long missing_keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5) {
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return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
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# define keyctl missing_keyctl
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}
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/* ======================================================================= */
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static inline key_serial_t missing_add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) {
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return syscall(__NR_add_key, type, description, payload, plen, ringid);
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# define add_key missing_add_key
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}
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/* ======================================================================= */
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static inline key_serial_t missing_request_key(const char *type, const char *description, const char * callout_info, key_serial_t destringid) {
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return syscall(__NR_request_key, type, description, callout_info, destringid);
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# define request_key missing_request_key
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}
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#endif
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/* ======================================================================= */
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#if !HAVE_BPF
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union bpf_attr;
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static inline int missing_bpf(int cmd, union bpf_attr *attr, size_t size) {
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return (int) syscall(__NR_bpf, cmd, attr, size);
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}
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# define bpf missing_bpf
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#endif
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/* ======================================================================= */
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#if !HAVE_SET_MEMPOLICY
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enum {
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MPOL_DEFAULT,
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MPOL_PREFERRED,
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MPOL_BIND,
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MPOL_INTERLEAVE,
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MPOL_LOCAL,
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};
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static inline long missing_set_mempolicy(int mode, const unsigned long *nodemask,
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unsigned long maxnode) {
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return syscall(__NR_set_mempolicy, mode, nodemask, maxnode);
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}
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# define set_mempolicy missing_set_mempolicy
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#endif
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#if !HAVE_GET_MEMPOLICY
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static inline long missing_get_mempolicy(int *mode, unsigned long *nodemask,
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unsigned long maxnode, void *addr,
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unsigned long flags) {
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return syscall(__NR_get_mempolicy, mode, nodemask, maxnode, addr, flags);
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}
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# define get_mempolicy missing_get_mempolicy
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#endif
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/* ======================================================================= */
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#if !HAVE_PIDFD_SEND_SIGNAL
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/* since kernel v5.1 (3eb39f47934f9d5a3027fe00d906a45fe3a15fad) */
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static inline int missing_pidfd_send_signal(int fd, int sig, siginfo_t *info, unsigned flags) {
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return syscall(__NR_pidfd_send_signal, fd, sig, info, flags);
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}
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# define pidfd_send_signal missing_pidfd_send_signal
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#endif
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/* ======================================================================= */
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#if !HAVE_PIDFD_OPEN
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/* since kernel v5.3 (7615d9e1780e26e0178c93c55b73309a5dc093d7) */
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static inline int missing_pidfd_open(pid_t pid, unsigned flags) {
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return syscall(__NR_pidfd_open, pid, flags);
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}
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# define pidfd_open missing_pidfd_open
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#endif
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/* ======================================================================= */
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#if !HAVE_RT_TGSIGQUEUEINFO
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static inline int missing_rt_tgsigqueueinfo(pid_t tgid, pid_t tid, int sig, siginfo_t *info) {
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return syscall(__NR_rt_tgsigqueueinfo, tgid, tid, sig, info);
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}
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# define rt_tgsigqueueinfo missing_rt_tgsigqueueinfo
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#endif
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/* ======================================================================= */
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#if !HAVE_EXECVEAT
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/* since kernel v3.19 (51f39a1f0cea1cacf8c787f652f26dfee9611874) */
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static inline int missing_execveat(int dirfd, const char *pathname,
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char *const argv[], char *const envp[],
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int flags) {
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return syscall(__NR_execveat, dirfd, pathname, argv, envp, flags);
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}
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# define execveat missing_execveat
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#endif
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/* ======================================================================= */
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#if !HAVE_CLOSE_RANGE
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/* since kernel v5.9 (9b4feb630e8e9801603f3cab3a36369e3c1cf88d) */
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static inline int missing_close_range(unsigned first_fd, unsigned end_fd, unsigned flags) {
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/* Kernel-side the syscall expects fds as unsigned integers (just like close() actually), while
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* userspace exclusively uses signed integers for fds. glibc chose to expose it 1:1 however, hence we
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* do so here too, even if we end up passing signed fds to it most of the time. */
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return syscall(__NR_close_range,
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first_fd,
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end_fd,
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flags);
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}
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# define close_range missing_close_range
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#endif
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/* ======================================================================= */
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#if !HAVE_MOUNT_SETATTR
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/* since kernel v5.12 (2a1867219c7b27f928e2545782b86daaf9ad50bd) */
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#if !HAVE_STRUCT_MOUNT_ATTR
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struct mount_attr {
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uint64_t attr_set;
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uint64_t attr_clr;
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uint64_t propagation;
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uint64_t userns_fd;
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};
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#else
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struct mount_attr;
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#endif
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#ifndef MOUNT_ATTR_RDONLY
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#define MOUNT_ATTR_RDONLY 0x00000001 /* Mount read-only */
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#endif
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#ifndef MOUNT_ATTR_NOSUID
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#define MOUNT_ATTR_NOSUID 0x00000002 /* Ignore suid and sgid bits */
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#endif
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#ifndef MOUNT_ATTR_NODEV
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#define MOUNT_ATTR_NODEV 0x00000004 /* Disallow access to device special files */
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#endif
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#ifndef MOUNT_ATTR_NOEXEC
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#define MOUNT_ATTR_NOEXEC 0x00000008 /* Disallow program execution */
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#endif
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#ifndef MOUNT_ATTR__ATIME
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#define MOUNT_ATTR__ATIME 0x00000070 /* Setting on how atime should be updated */
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#endif
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#ifndef MOUNT_ATTR_RELATIME
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#define MOUNT_ATTR_RELATIME 0x00000000 /* - Update atime relative to mtime/ctime. */
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#endif
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#ifndef MOUNT_ATTR_NOATIME
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#define MOUNT_ATTR_NOATIME 0x00000010 /* - Do not update access times. */
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#endif
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#ifndef MOUNT_ATTR_STRICTATIME
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#define MOUNT_ATTR_STRICTATIME 0x00000020 /* - Always perform atime updates */
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#endif
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#ifndef MOUNT_ATTR_NODIRATIME
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#define MOUNT_ATTR_NODIRATIME 0x00000080 /* Do not update directory access times */
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#endif
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#ifndef MOUNT_ATTR_IDMAP
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#define MOUNT_ATTR_IDMAP 0x00100000 /* Idmap mount to @userns_fd in struct mount_attr. */
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#endif
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#ifndef MOUNT_ATTR_NOSYMFOLLOW
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#define MOUNT_ATTR_NOSYMFOLLOW 0x00200000 /* Do not follow symlinks */
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#endif
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#ifndef MOUNT_ATTR_SIZE_VER0
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#define MOUNT_ATTR_SIZE_VER0 32 /* sizeof first published struct */
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#endif
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#ifndef AT_RECURSIVE
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#define AT_RECURSIVE 0x8000
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#endif
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static inline int missing_mount_setattr(
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int dfd,
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const char *path,
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unsigned flags,
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struct mount_attr *attr,
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size_t size) {
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return syscall(__NR_mount_setattr, dfd, path, flags, attr, size);
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}
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# define mount_setattr missing_mount_setattr
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#endif
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/* ======================================================================= */
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#if !HAVE_OPEN_TREE
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/* since kernel v5.2 (a07b20004793d8926f78d63eb5980559f7813404, d8076bdb56af5e5918376cd1573a6b0007fc1a89) */
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#ifndef OPEN_TREE_CLONE
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#define OPEN_TREE_CLONE 1
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#endif
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#ifndef OPEN_TREE_CLOEXEC
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#define OPEN_TREE_CLOEXEC O_CLOEXEC
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#endif
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static inline int missing_open_tree(
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int dfd,
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const char *filename,
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unsigned flags) {
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return syscall(__NR_open_tree, dfd, filename, flags);
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}
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# define open_tree missing_open_tree
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#endif
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/* ======================================================================= */
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#ifndef MOVE_MOUNT_BENEATH
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#define MOVE_MOUNT_BENEATH 0x00000200
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#endif
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#if !HAVE_MOVE_MOUNT
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/* since kernel v5.2 (2db154b3ea8e14b04fee23e3fdfd5e9d17fbc6ae, d8076bdb56af5e5918376cd1573a6b0007fc1a89) */
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#ifndef MOVE_MOUNT_F_EMPTY_PATH
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#define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */
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#endif
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#ifndef MOVE_MOUNT_T_EMPTY_PATH
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#define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
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#endif
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static inline int missing_move_mount(
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int from_dfd,
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const char *from_pathname,
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int to_dfd,
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const char *to_pathname,
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unsigned flags) {
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return syscall(__NR_move_mount, from_dfd, from_pathname, to_dfd, to_pathname, flags);
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}
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# define move_mount missing_move_mount
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#endif
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/* ======================================================================= */
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#if !HAVE_FSOPEN
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/* since kernel v5.2 (24dcb3d90a1f67fe08c68a004af37df059d74005, d8076bdb56af5e5918376cd1573a6b0007fc1a89) */
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#ifndef FSOPEN_CLOEXEC
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#define FSOPEN_CLOEXEC 0x00000001
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#endif
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static inline int missing_fsopen(const char *fsname, unsigned flags) {
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return syscall(__NR_fsopen, fsname, flags);
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}
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# define fsopen missing_fsopen
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#endif
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/* ======================================================================= */
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#if !HAVE_FSCONFIG
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/* since kernel v5.2 (ecdab150fddb42fe6a739335257949220033b782, d8076bdb56af5e5918376cd1573a6b0007fc1a89) */
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#ifndef FSCONFIG_SET_FLAG
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#define FSCONFIG_SET_FLAG 0 /* Set parameter, supplying no value */
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#endif
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#ifndef FSCONFIG_SET_STRING
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#define FSCONFIG_SET_STRING 1 /* Set parameter, supplying a string value */
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#endif
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#ifndef FSCONFIG_SET_FD
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#define FSCONFIG_SET_FD 5 /* Set parameter, supplying an object by fd */
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#endif
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#ifndef FSCONFIG_CMD_CREATE
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#define FSCONFIG_CMD_CREATE 6 /* Invoke superblock creation */
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#endif
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static inline int missing_fsconfig(int fd, unsigned cmd, const char *key, const void *value, int aux) {
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return syscall(__NR_fsconfig, fd, cmd, key, value, aux);
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}
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# define fsconfig missing_fsconfig
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#endif
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/* ======================================================================= */
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#if !HAVE_FSMOUNT
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/* since kernel v5.2 for (93766fbd2696c2c4453dd8e1070977e9cd4e6b6d, d8076bdb56af5e5918376cd1573a6b0007fc1a89) */
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#ifndef FSMOUNT_CLOEXEC
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#define FSMOUNT_CLOEXEC 0x00000001
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#endif
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static inline int missing_fsmount(int fd, unsigned flags, unsigned ms_flags) {
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return syscall(__NR_fsmount, fd, flags, ms_flags);
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}
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# define fsmount missing_fsmount
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#endif
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/* ======================================================================= */
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#if !HAVE_GETDENTS64
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static inline ssize_t missing_getdents64(int fd, void *buffer, size_t length) {
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return syscall(__NR_getdents64, fd, buffer, length);
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}
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# define getdents64 missing_getdents64
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#endif
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/* ======================================================================= */
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#if !HAVE_SCHED_SETATTR
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/* since kernel 3.14 (e6cfc0295c7d51b008999a8b13a44fb43f8685ea) */
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static inline ssize_t missing_sched_setattr(pid_t pid, struct sched_attr *attr, unsigned int flags) {
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return syscall(__NR_sched_setattr, pid, attr, flags);
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}
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# define sched_setattr missing_sched_setattr
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#endif
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/* ======================================================================= */
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/* glibc does not provide clone() on ia64, only clone2(). Not only that, but it also doesn't provide a
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* prototype, only the symbol in the shared library (it provides a prototype for clone(), but not the
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* symbol in the shared library). */
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#if defined(__ia64__)
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int __clone2(int (*fn)(void *), void *stack_base, size_t stack_size, int flags, void *arg);
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#define HAVE_CLONE 0
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#else
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/* We know that everywhere else clone() is available, so we don't bother with a meson check (that takes time
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* at build time) and just define it. Once the kernel drops ia64 support, we can drop this too. */
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#define HAVE_CLONE 1
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#endif
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/* ======================================================================= */
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#if !HAVE_QUOTACTL_FD
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/* since kernel v5.14 (64c2c2c62f92339b176ea24403d8db16db36f9e6) */
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static inline int missing_quotactl_fd(int fd, int cmd, int id, void *addr) {
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return syscall(__NR_quotactl_fd, fd, cmd, id, addr);
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}
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# define quotactl_fd missing_quotactl_fd
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#endif
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/* ======================================================================= */
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#if !HAVE_SETXATTRAT
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/* since kernel v6.13 (6140be90ec70c39fa844741ca3cc807dd0866394) */
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struct xattr_args {
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_align_(8) uint64_t value;
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uint32_t size;
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uint32_t flags;
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};
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static inline int missing_setxattrat(int fd, const char *path, int at_flags, const char *name, const struct xattr_args *args, size_t size) {
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return syscall(__NR_setxattrat, fd, path, at_flags, name, args, size);
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}
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# define setxattrat missing_setxattrat
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#endif
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/* ======================================================================= */
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#if !HAVE_REMOVEXATTRAT
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/* since kernel v6.13 (6140be90ec70c39fa844741ca3cc807dd0866394) */
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static inline int missing_removexattrat(int fd, const char *path, int at_flags, const char *name) {
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return syscall(__NR_removexattrat, fd, path, at_flags, name);
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}
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# define removexattrat missing_removexattrat
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#endif
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