816 lines
24 KiB
C
816 lines
24 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 <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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#if defined(__x86_64__) && defined(__ILP32__)
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# define systemd_SC_arch_bias(x) ((x) | /* __X32_SYSCALL_BIT */ 0x40000000)
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#elif defined(__ia64__)
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# define systemd_SC_arch_bias(x) (1024 + (x))
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#elif defined __alpha__
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# define systemd_SC_arch_bias(x) (110 + (x))
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#elif defined _MIPS_SIM
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# if _MIPS_SIM == _MIPS_SIM_ABI32
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# define systemd_SC_arch_bias(x) (4000 + (x))
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# elif _MIPS_SIM == _MIPS_SIM_NABI32
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# define systemd_SC_arch_bias(x) (6000 + (x))
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# elif _MIPS_SIM == _MIPS_SIM_ABI64
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# define systemd_SC_arch_bias(x) (5000 + (x))
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# else
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# error "Unknown MIPS ABI"
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# endif
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#else
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# define systemd_SC_arch_bias(x) (x)
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#endif
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#include "missing_keyctl.h"
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#include "missing_stat.h"
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/* linux/kcmp.h */
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#ifndef KCMP_FILE /* 3f4994cfc15f38a3159c6e3a4b3ab2e1481a6b02 (3.19) */
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#define KCMP_FILE 0
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#endif
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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 defined __x86_64__
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# define systemd_NR_memfd_create systemd_SC_arch_bias(319)
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#elif defined __arm__
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# define systemd_NR_memfd_create 385
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#elif defined __aarch64__
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# define systemd_NR_memfd_create 279
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#elif defined(__powerpc__)
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# define systemd_NR_memfd_create 360
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#elif defined __s390__
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# define systemd_NR_memfd_create 350
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#elif defined _MIPS_SIM
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# if _MIPS_SIM == _MIPS_SIM_ABI32
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# define systemd_NR_memfd_create systemd_SC_arch_bias(354)
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# elif _MIPS_SIM == _MIPS_SIM_NABI32
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# define systemd_NR_memfd_create systemd_SC_arch_bias(318)
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# elif _MIPS_SIM == _MIPS_SIM_ABI64
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# define systemd_NR_memfd_create systemd_SC_arch_bias(314)
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# endif
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#elif defined __i386__
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# define systemd_NR_memfd_create 356
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#elif defined __arc__
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# define systemd_NR_memfd_create 279
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#else
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# warning "memfd_create() syscall number unknown for your architecture"
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#endif
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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#if defined __NR_memfd_create && __NR_memfd_create >= 0
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# if defined systemd_NR_memfd_create
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assert_cc(__NR_memfd_create == systemd_NR_memfd_create);
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# endif
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#else
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# if defined __NR_memfd_create
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# undef __NR_memfd_create
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# endif
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# if defined systemd_NR_memfd_create
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# define __NR_memfd_create systemd_NR_memfd_create
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# endif
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#endif
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#if !HAVE_MEMFD_CREATE
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static inline int missing_memfd_create(const char *name, unsigned int flags) {
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# ifdef __NR_memfd_create
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return syscall(__NR_memfd_create, name, flags);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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}
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# define memfd_create missing_memfd_create
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#endif
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/* ======================================================================= */
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#if defined __x86_64__
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# define systemd_NR_getrandom systemd_SC_arch_bias(318)
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#elif defined(__i386__)
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# define systemd_NR_getrandom 355
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#elif defined(__arm__)
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# define systemd_NR_getrandom 384
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#elif defined(__aarch64__)
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# define systemd_NR_getrandom 278
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#elif defined(__ia64__)
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# define systemd_NR_getrandom systemd_SC_arch_bias(318)
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#elif defined(__m68k__)
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# define systemd_NR_getrandom 352
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#elif defined(__s390x__)
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# define systemd_NR_getrandom 349
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#elif defined(__powerpc__)
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# define systemd_NR_getrandom 359
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#elif defined _MIPS_SIM
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# if _MIPS_SIM == _MIPS_SIM_ABI32
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# define systemd_NR_getrandom systemd_SC_arch_bias(353)
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# elif _MIPS_SIM == _MIPS_SIM_NABI32
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# define systemd_NR_getrandom systemd_SC_arch_bias(317)
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# elif _MIPS_SIM == _MIPS_SIM_ABI64
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# define systemd_NR_getrandom systemd_SC_arch_bias(313)
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# endif
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#elif defined(__arc__)
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# define systemd_NR_getrandom 278
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#else
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# warning "getrandom() syscall number unknown for your architecture"
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#endif
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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#if defined __NR_getrandom && __NR_getrandom >= 0
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# if defined systemd_NR_getrandom
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assert_cc(__NR_getrandom == systemd_NR_getrandom);
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# endif
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#else
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# if defined __NR_getrandom
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# undef __NR_getrandom
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# endif
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# if defined systemd_NR_getrandom
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# define __NR_getrandom systemd_NR_getrandom
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# endif
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#endif
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#if !HAVE_GETRANDOM
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static inline int missing_getrandom(void *buffer, size_t count, unsigned flags) {
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# ifdef __NR_getrandom
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return syscall(__NR_getrandom, buffer, count, flags);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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}
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# define getrandom missing_getrandom
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#endif
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/* ======================================================================= */
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/* The syscall has been defined since forever, but the glibc wrapper was missing. */
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#if !HAVE_GETTID
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static inline pid_t missing_gettid(void) {
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# if defined __NR_gettid && __NR_gettid >= 0
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return (pid_t) syscall(__NR_gettid);
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# else
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# error "__NR_gettid not defined"
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# endif
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}
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# define gettid missing_gettid
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#endif
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/* ======================================================================= */
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#if defined(__x86_64__)
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# define systemd_NR_name_to_handle_at systemd_SC_arch_bias(303)
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#elif defined(__i386__)
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# define systemd_NR_name_to_handle_at 341
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#elif defined(__arm__)
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# define systemd_NR_name_to_handle_at 370
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#elif defined __aarch64__
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# define systemd_NR_name_to_handle_at 264
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#elif defined(__powerpc__)
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# define systemd_NR_name_to_handle_at 345
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#elif defined __s390__ || defined __s390x__
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# define systemd_NR_name_to_handle_at 335
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#elif defined(__arc__)
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# define systemd_NR_name_to_handle_at 264
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#elif defined _MIPS_SIM
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# if _MIPS_SIM == _MIPS_SIM_ABI32
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# define systemd_NR_name_to_handle_at systemd_SC_arch_bias(339)
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# elif _MIPS_SIM == _MIPS_SIM_NABI32
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# define systemd_NR_name_to_handle_at systemd_SC_arch_bias(303)
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# elif _MIPS_SIM == _MIPS_SIM_ABI64
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# define systemd_NR_name_to_handle_at systemd_SC_arch_bias(298)
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# endif
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#else
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# warning "name_to_handle_at number is not defined"
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#endif
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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#if defined __NR_name_to_handle_at && __NR_name_to_handle_at >= 0
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# if defined systemd_NR_name_to_handle_at
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assert_cc(__NR_name_to_handle_at == systemd_NR_name_to_handle_at);
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# endif
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#else
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# if defined __NR_name_to_handle_at
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# undef __NR_name_to_handle_at
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# endif
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# if defined systemd_NR_name_to_handle_at
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# define __NR_name_to_handle_at systemd_NR_name_to_handle_at
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# endif
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#endif
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#if !HAVE_NAME_TO_HANDLE_AT
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struct file_handle {
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unsigned int handle_bytes;
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int handle_type;
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unsigned char f_handle[0];
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};
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static inline int missing_name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) {
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# ifdef __NR_name_to_handle_at
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return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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}
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# define name_to_handle_at missing_name_to_handle_at
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#endif
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/* ======================================================================= */
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#if defined __aarch64__
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# define systemd_NR_setns 268
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#elif defined __arm__
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# define systemd_NR_setns 375
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#elif defined(__x86_64__)
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# define systemd_NR_setns systemd_SC_arch_bias(308)
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#elif defined(__i386__)
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# define systemd_NR_setns 346
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#elif defined(__powerpc__)
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# define systemd_NR_setns 350
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#elif defined __s390__ || defined __s390x__
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# define systemd_NR_setns 339
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#elif defined(__arc__)
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# define systemd_NR_setns 268
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#elif defined _MIPS_SIM
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# if _MIPS_SIM == _MIPS_SIM_ABI32
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# define systemd_NR_setns systemd_SC_arch_bias(344)
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# elif _MIPS_SIM == _MIPS_SIM_NABI32
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# define systemd_NR_setns systemd_SC_arch_bias(308)
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# elif _MIPS_SIM == _MIPS_SIM_ABI64
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# define systemd_NR_setns systemd_SC_arch_bias(303)
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# endif
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#else
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# warning "setns() syscall number unknown for your architecture"
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#endif
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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#if defined __NR_setns && __NR_setns >= 0
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# if defined systemd_NR_setns
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assert_cc(__NR_setns == systemd_NR_setns);
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# endif
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#else
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# if defined __NR_setns
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# undef __NR_setns
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# endif
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# if defined systemd_NR_setns
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# define __NR_setns systemd_NR_setns
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# endif
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#endif
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#if !HAVE_SETNS
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static inline int missing_setns(int fd, int nstype) {
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# ifdef __NR_setns
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return syscall(__NR_setns, fd, nstype);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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}
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# define setns missing_setns
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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 defined __x86_64__
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# define systemd_NR_renameat2 systemd_SC_arch_bias(316)
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#elif defined __arm__
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# define systemd_NR_renameat2 382
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#elif defined __aarch64__
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# define systemd_NR_renameat2 276
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#elif defined _MIPS_SIM
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# if _MIPS_SIM == _MIPS_SIM_ABI32
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# define systemd_NR_renameat2 systemd_SC_arch_bias(351)
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# elif _MIPS_SIM == _MIPS_SIM_NABI32
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# define systemd_NR_renameat2 systemd_SC_arch_bias(315)
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# elif _MIPS_SIM == _MIPS_SIM_ABI64
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# define systemd_NR_renameat2 systemd_SC_arch_bias(311)
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# endif
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#elif defined __i386__
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# define systemd_NR_renameat2 353
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#elif defined __powerpc64__
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# define systemd_NR_renameat2 357
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#elif defined __s390__ || defined __s390x__
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# define systemd_NR_renameat2 347
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#elif defined __arc__
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# define systemd_NR_renameat2 276
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#else
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# warning "renameat2() syscall number unknown for your architecture"
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#endif
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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#if defined __NR_renameat2 && __NR_renameat2 >= 0
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# if defined systemd_NR_renameat2
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assert_cc(__NR_renameat2 == systemd_NR_renameat2);
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# endif
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#else
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# if defined __NR_renameat2
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# undef __NR_renameat2
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# endif
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# if defined systemd_NR_renameat2
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# define __NR_renameat2 systemd_NR_renameat2
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# endif
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#endif
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#if !HAVE_RENAMEAT2
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static inline int missing_renameat2(int oldfd, const char *oldname, int newfd, const char *newname, unsigned flags) {
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# ifdef __NR_renameat2
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return syscall(__NR_renameat2, oldfd, oldname, newfd, newname, flags);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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}
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# define renameat2 missing_renameat2
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#endif
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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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# if defined __NR_kcmp && __NR_kcmp >= 0
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return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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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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# if defined __NR_keyctl && __NR_keyctl >= 0
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return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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# define keyctl missing_keyctl
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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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# if defined __NR_add_key && __NR_add_key >= 0
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return syscall(__NR_add_key, type, description, payload, plen, ringid);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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# define add_key missing_add_key
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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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# if defined __NR_request_key && __NR_request_key >= 0
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return syscall(__NR_request_key, type, description, callout_info, destringid);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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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 defined(__x86_64__)
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# define systemd_NR_copy_file_range systemd_SC_arch_bias(326)
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#elif defined(__i386__)
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# define systemd_NR_copy_file_range 377
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#elif defined __s390__
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# define systemd_NR_copy_file_range 375
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#elif defined __arm__
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# define systemd_NR_copy_file_range 391
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#elif defined __aarch64__
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# define systemd_NR_copy_file_range 285
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#elif defined __powerpc__
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# define systemd_NR_copy_file_range 379
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#elif defined __arc__
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# define systemd_NR_copy_file_range 285
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#elif defined _MIPS_SIM
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# if _MIPS_SIM == _MIPS_SIM_ABI32
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# define systemd_NR_copy_file_range systemd_SC_arch_bias(360)
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# elif _MIPS_SIM == _MIPS_SIM_NABI32
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# define systemd_NR_copy_file_range systemd_SC_arch_bias(324)
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# elif _MIPS_SIM == _MIPS_SIM_ABI64
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# define systemd_NR_copy_file_range systemd_SC_arch_bias(320)
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# endif
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#else
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# warning "copy_file_range() syscall number unknown for your architecture"
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#endif
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/* may be (invalid) negative number due to libseccomp, see PR 13319 */
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#if defined __NR_copy_file_range && __NR_copy_file_range >= 0
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# if defined systemd_NR_copy_file_range
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assert_cc(__NR_copy_file_range == systemd_NR_copy_file_range);
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# endif
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#else
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# if defined __NR_copy_file_range
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# undef __NR_copy_file_range
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# endif
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# if defined systemd_NR_copy_file_range
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# define __NR_copy_file_range systemd_NR_copy_file_range
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# endif
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#endif
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#if !HAVE_COPY_FILE_RANGE
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static inline ssize_t missing_copy_file_range(int fd_in, loff_t *off_in,
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int fd_out, loff_t *off_out,
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size_t len,
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unsigned int flags) {
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# ifdef __NR_copy_file_range
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return syscall(__NR_copy_file_range, fd_in, off_in, fd_out, off_out, len, flags);
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# else
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errno = ENOSYS;
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return -1;
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# endif
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}
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# define copy_file_range missing_copy_file_range
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#endif
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/* ======================================================================= */
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#if defined __i386__
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# define systemd_NR_bpf 357
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#elif defined __x86_64__
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# define systemd_NR_bpf systemd_SC_arch_bias(321)
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#elif defined __aarch64__
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# define systemd_NR_bpf 280
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#elif defined __arm__
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# define systemd_NR_bpf 386
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#elif defined(__powerpc__)
|
|
# define systemd_NR_bpf 361
|
|
#elif defined __sparc__
|
|
# define systemd_NR_bpf 349
|
|
#elif defined __s390__
|
|
# define systemd_NR_bpf 351
|
|
#elif defined __tilegx__
|
|
# define systemd_NR_bpf 280
|
|
#elif defined _MIPS_SIM
|
|
# if _MIPS_SIM == _MIPS_SIM_ABI32
|
|
# define systemd_NR_bpf systemd_SC_arch_bias(355)
|
|
# elif _MIPS_SIM == _MIPS_SIM_NABI32
|
|
# define systemd_NR_bpf systemd_SC_arch_bias(319)
|
|
# elif _MIPS_SIM == _MIPS_SIM_ABI64
|
|
# define systemd_NR_bpf systemd_SC_arch_bias(315)
|
|
# endif
|
|
#else
|
|
# warning "bpf() syscall number unknown for your architecture"
|
|
#endif
|
|
|
|
/* may be (invalid) negative number due to libseccomp, see PR 13319 */
|
|
#if defined __NR_bpf && __NR_bpf >= 0
|
|
# if defined systemd_NR_bpf
|
|
assert_cc(__NR_bpf == systemd_NR_bpf);
|
|
# endif
|
|
#else
|
|
# if defined __NR_bpf
|
|
# undef __NR_bpf
|
|
# endif
|
|
# if defined systemd_NR_bpf
|
|
# define __NR_bpf systemd_NR_bpf
|
|
# endif
|
|
#endif
|
|
|
|
#if !HAVE_BPF
|
|
union bpf_attr;
|
|
|
|
static inline int missing_bpf(int cmd, union bpf_attr *attr, size_t size) {
|
|
#ifdef __NR_bpf
|
|
return (int) syscall(__NR_bpf, cmd, attr, size);
|
|
#else
|
|
errno = ENOSYS;
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
# define bpf missing_bpf
|
|
#endif
|
|
|
|
/* ======================================================================= */
|
|
|
|
#ifndef __IGNORE_pkey_mprotect
|
|
# if defined __i386__
|
|
# define systemd_NR_pkey_mprotect 380
|
|
# elif defined __x86_64__
|
|
# define systemd_NR_pkey_mprotect systemd_SC_arch_bias(329)
|
|
# elif defined __aarch64__
|
|
# define systemd_NR_pkey_mprotect 288
|
|
# elif defined __arm__
|
|
# define systemd_NR_pkey_mprotect 394
|
|
# elif defined __powerpc__
|
|
# define systemd_NR_pkey_mprotect 386
|
|
# elif defined __s390__
|
|
# define systemd_NR_pkey_mprotect 384
|
|
# elif defined _MIPS_SIM
|
|
# if _MIPS_SIM == _MIPS_SIM_ABI32
|
|
# define systemd_NR_pkey_mprotect systemd_SC_arch_bias(363)
|
|
# elif _MIPS_SIM == _MIPS_SIM_NABI32
|
|
# define systemd_NR_pkey_mprotect systemd_SC_arch_bias(327)
|
|
# elif _MIPS_SIM == _MIPS_SIM_ABI64
|
|
# define systemd_NR_pkey_mprotect systemd_SC_arch_bias(323)
|
|
# endif
|
|
# else
|
|
# warning "pkey_mprotect() syscall number unknown for your architecture"
|
|
# endif
|
|
|
|
/* may be (invalid) negative number due to libseccomp, see PR 13319 */
|
|
# if defined __NR_pkey_mprotect && __NR_pkey_mprotect >= 0
|
|
# if defined systemd_NR_pkey_mprotect
|
|
assert_cc(__NR_pkey_mprotect == systemd_NR_pkey_mprotect);
|
|
# endif
|
|
# else
|
|
# if defined __NR_pkey_mprotect
|
|
# undef __NR_pkey_mprotect
|
|
# endif
|
|
# if defined systemd_NR_pkey_mprotect
|
|
# define __NR_pkey_mprotect systemd_NR_pkey_mprotect
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
/* ======================================================================= */
|
|
|
|
#if defined __aarch64__
|
|
# define systemd_NR_statx 291
|
|
#elif defined __arm__
|
|
# define systemd_NR_statx 397
|
|
#elif defined __alpha__
|
|
# define systemd_NR_statx 522
|
|
#elif defined __i386__ || defined __powerpc64__
|
|
# define systemd_NR_statx 383
|
|
#elif defined __s390__ || defined __s390x__
|
|
# define systemd_NR_statx 379
|
|
#elif defined __sparc__
|
|
# define systemd_NR_statx 360
|
|
#elif defined __x86_64__
|
|
# define systemd_NR_statx systemd_SC_arch_bias(332)
|
|
#elif defined _MIPS_SIM
|
|
# if _MIPS_SIM == _MIPS_SIM_ABI32
|
|
# define systemd_NR_statx systemd_SC_arch_bias(366)
|
|
# elif _MIPS_SIM == _MIPS_SIM_NABI32
|
|
# define systemd_NR_statx systemd_SC_arch_bias(330)
|
|
# elif _MIPS_SIM == _MIPS_SIM_ABI64
|
|
# define systemd_NR_statx systemd_SC_arch_bias(326)
|
|
# endif
|
|
#else
|
|
# warning "statx() syscall number unknown for your architecture"
|
|
#endif
|
|
|
|
/* may be (invalid) negative number due to libseccomp, see PR 13319 */
|
|
#if defined __NR_statx && __NR_statx >= 0
|
|
# if defined systemd_NR_statx
|
|
assert_cc(__NR_statx == systemd_NR_statx);
|
|
# endif
|
|
#else
|
|
# if defined __NR_statx
|
|
# undef __NR_statx
|
|
# endif
|
|
# if defined systemd_NR_statx
|
|
# define __NR_statx systemd_NR_statx
|
|
# endif
|
|
#endif
|
|
|
|
#if !HAVE_STATX
|
|
struct statx;
|
|
|
|
static inline ssize_t missing_statx(int dfd, const char *filename, unsigned flags, unsigned int mask, struct statx *buffer) {
|
|
# ifdef __NR_statx
|
|
return syscall(__NR_statx, dfd, filename, flags, mask, buffer);
|
|
# else
|
|
errno = ENOSYS;
|
|
return -1;
|
|
# endif
|
|
}
|
|
#endif
|
|
|
|
/* This typedef is supposed to be always defined. */
|
|
typedef struct statx struct_statx;
|
|
|
|
#if !HAVE_STATX
|
|
# define statx(dfd, filename, flags, mask, buffer) missing_statx(dfd, filename, flags, mask, buffer)
|
|
#endif
|
|
|
|
/* ======================================================================= */
|
|
|
|
#if !HAVE_SET_MEMPOLICY
|
|
enum {
|
|
MPOL_DEFAULT,
|
|
MPOL_PREFERRED,
|
|
MPOL_BIND,
|
|
MPOL_INTERLEAVE,
|
|
MPOL_LOCAL,
|
|
};
|
|
|
|
static inline long missing_set_mempolicy(int mode, const unsigned long *nodemask,
|
|
unsigned long maxnode) {
|
|
long i;
|
|
# if defined __NR_set_mempolicy && __NR_set_mempolicy >= 0
|
|
i = syscall(__NR_set_mempolicy, mode, nodemask, maxnode);
|
|
# else
|
|
errno = ENOSYS;
|
|
i = -1;
|
|
# endif
|
|
return i;
|
|
}
|
|
|
|
# define set_mempolicy missing_set_mempolicy
|
|
#endif
|
|
|
|
#if !HAVE_GET_MEMPOLICY
|
|
static inline long missing_get_mempolicy(int *mode, unsigned long *nodemask,
|
|
unsigned long maxnode, void *addr,
|
|
unsigned long flags) {
|
|
long i;
|
|
# if defined __NR_get_mempolicy && __NR_get_mempolicy >= 0
|
|
i = syscall(__NR_get_mempolicy, mode, nodemask, maxnode, addr, flags);
|
|
# else
|
|
errno = ENOSYS;
|
|
i = -1;
|
|
# endif
|
|
return i;
|
|
}
|
|
|
|
# define get_mempolicy missing_get_mempolicy
|
|
#endif
|
|
|
|
/* ======================================================================= */
|
|
|
|
/* should be always defined, see kernel 39036cd2727395c3369b1051005da74059a85317 */
|
|
#define systemd_NR_pidfd_send_signal systemd_SC_arch_bias(424)
|
|
|
|
/* may be (invalid) negative number due to libseccomp, see PR 13319 */
|
|
#if defined __NR_pidfd_send_signal && __NR_pidfd_send_signal >= 0
|
|
# if defined systemd_NR_pidfd_send_signal
|
|
assert_cc(__NR_pidfd_send_signal == systemd_NR_pidfd_send_signal);
|
|
# endif
|
|
#else
|
|
# if defined __NR_pidfd_send_signal
|
|
# undef __NR_pidfd_send_signal
|
|
# endif
|
|
# define __NR_pidfd_send_signal systemd_NR_pidfd_send_signal
|
|
#endif
|
|
|
|
#if !HAVE_PIDFD_SEND_SIGNAL
|
|
static inline int missing_pidfd_send_signal(int fd, int sig, siginfo_t *info, unsigned flags) {
|
|
# ifdef __NR_pidfd_send_signal
|
|
return syscall(__NR_pidfd_send_signal, fd, sig, info, flags);
|
|
# else
|
|
errno = ENOSYS;
|
|
return -1;
|
|
# endif
|
|
}
|
|
|
|
# define pidfd_send_signal missing_pidfd_send_signal
|
|
#endif
|
|
|
|
/* should be always defined, see kernel 7615d9e1780e26e0178c93c55b73309a5dc093d7 */
|
|
#define systemd_NR_pidfd_open systemd_SC_arch_bias(434)
|
|
|
|
/* may be (invalid) negative number due to libseccomp, see PR 13319 */
|
|
#if defined __NR_pidfd_open && __NR_pidfd_open >= 0
|
|
# if defined systemd_NR_pidfd_open
|
|
assert_cc(__NR_pidfd_open == systemd_NR_pidfd_open);
|
|
# endif
|
|
#else
|
|
# if defined __NR_pidfd_open
|
|
# undef __NR_pidfd_open
|
|
# endif
|
|
# define __NR_pidfd_open systemd_NR_pidfd_open
|
|
#endif
|
|
|
|
#if !HAVE_PIDFD_OPEN
|
|
static inline int missing_pidfd_open(pid_t pid, unsigned flags) {
|
|
# ifdef __NR_pidfd_open
|
|
return syscall(__NR_pidfd_open, pid, flags);
|
|
# else
|
|
errno = ENOSYS;
|
|
return -1;
|
|
# endif
|
|
}
|
|
|
|
# define pidfd_open missing_pidfd_open
|
|
#endif
|
|
|
|
/* ======================================================================= */
|
|
|
|
#if !HAVE_RT_SIGQUEUEINFO
|
|
static inline int missing_rt_sigqueueinfo(pid_t tgid, int sig, siginfo_t *info) {
|
|
# if defined __NR_rt_sigqueueinfo && __NR_rt_sigqueueinfo >= 0
|
|
return syscall(__NR_rt_sigqueueinfo, tgid, sig, info);
|
|
# else
|
|
# error "__NR_rt_sigqueueinfo not defined"
|
|
# endif
|
|
}
|
|
|
|
# define rt_sigqueueinfo missing_rt_sigqueueinfo
|
|
#endif
|
|
|
|
/* ======================================================================= */
|
|
|
|
#if !HAVE_EXECVEAT
|
|
static inline int missing_execveat(int dirfd, const char *pathname,
|
|
char *const argv[], char *const envp[],
|
|
int flags) {
|
|
# if defined __NR_execveat && __NR_execveat >= 0
|
|
return syscall(__NR_execveat, dirfd, pathname, argv, envp, flags);
|
|
# else
|
|
errno = ENOSYS;
|
|
return -1;
|
|
# endif
|
|
}
|
|
|
|
# undef AT_EMPTY_PATH
|
|
# define AT_EMPTY_PATH 0x1000
|
|
# define execveat missing_execveat
|
|
#endif
|
|
|
|
/* ======================================================================= */
|
|
|
|
#define systemd_NR_close_range systemd_SC_arch_bias(436)
|
|
|
|
/* may be (invalid) negative number due to libseccomp, see PR 13319 */
|
|
#if defined __NR_close_range && __NR_close_range >= 0
|
|
# if defined systemd_NR_close_range
|
|
assert_cc(__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
|
|
# define __NR_close_range systemd_NR_close_range
|
|
# endif
|
|
#endif
|
|
|
|
#if !HAVE_CLOSE_RANGE
|
|
static inline int missing_close_range(int first_fd, int end_fd, unsigned flags) {
|
|
# ifdef __NR_close_range
|
|
/* Kernel-side the syscall expects fds as unsigned integers (just like close() actually), while
|
|
* userspace exclusively uses signed integers for fds. We don't know just yet how glibc is going to
|
|
* wrap this syscall, but let's assume it's going to be similar to what they do for close(),
|
|
* i.e. make the same unsigned → signed type change from the raw kernel syscall compared to the
|
|
* userspace wrapper. There's only one caveat for this: unlike for close() there's the special
|
|
* UINT_MAX fd value for the 'end_fd' argument. Let's safely map that to -1 here. And let's refuse
|
|
* any other negative values. */
|
|
if ((first_fd < 0) || (end_fd < 0 && end_fd != -1)) {
|
|
errno = -EBADF;
|
|
return -1;
|
|
}
|
|
|
|
return syscall(__NR_close_range,
|
|
(unsigned) first_fd,
|
|
end_fd == -1 ? UINT_MAX : (unsigned) end_fd, /* Of course, the compiler should figure out that this is the identity mapping IRL */
|
|
flags);
|
|
# else
|
|
errno = ENOSYS;
|
|
return -1;
|
|
# endif
|
|
}
|
|
|
|
# define close_range missing_close_range
|
|
#endif
|