| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| #pragma once |
| |
| /* Missing glibc definitions to access certain kernel APIs */ |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <sys/syscall.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| |
| #ifdef ARCH_MIPS |
| #include <asm/sgidefs.h> |
| #endif |
| |
| #if defined(__x86_64__) && defined(__ILP32__) |
| # define systemd_SC_arch_bias(x) ((x) | /* __X32_SYSCALL_BIT */ 0x40000000) |
| #elif defined(__ia64__) |
| # define systemd_SC_arch_bias(x) (1024 + (x)) |
| #elif defined __alpha__ |
| # define systemd_SC_arch_bias(x) (110 + (x)) |
| #elif defined _MIPS_SIM |
| # if _MIPS_SIM == _MIPS_SIM_ABI32 |
| # define systemd_SC_arch_bias(x) (4000 + (x)) |
| # elif _MIPS_SIM == _MIPS_SIM_NABI32 |
| # define systemd_SC_arch_bias(x) (6000 + (x)) |
| # elif _MIPS_SIM == _MIPS_SIM_ABI64 |
| # define systemd_SC_arch_bias(x) (5000 + (x)) |
| # else |
| # error "Unknown MIPS ABI" |
| # endif |
| #else |
| # define systemd_SC_arch_bias(x) (x) |
| #endif |
| |
| #include "missing_keyctl.h" |
| #include "missing_stat.h" |
| |
| /* linux/kcmp.h */ |
| #ifndef KCMP_FILE /* 3f4994cfc15f38a3159c6e3a4b3ab2e1481a6b02 (3.19) */ |
| #define KCMP_FILE 0 |
| #endif |
| |
| #if !HAVE_PIVOT_ROOT |
| static inline int missing_pivot_root(const char *new_root, const char *put_old) { |
| return syscall(__NR_pivot_root, new_root, put_old); |
| } |
| |
| # define pivot_root missing_pivot_root |
| #endif |
| |
| /* ======================================================================= */ |
| |
| #if defined __x86_64__ |
| # define systemd_NR_memfd_create systemd_SC_arch_bias(319) |
| #elif defined __arm__ |
| # define systemd_NR_memfd_create 385 |
| #elif defined __aarch64__ |
| # define systemd_NR_memfd_create 279 |
| #elif defined(__powerpc__) |
| # define systemd_NR_memfd_create 360 |
| #elif defined __s390__ |
| # define systemd_NR_memfd_create 350 |
| #elif defined _MIPS_SIM |
| # if _MIPS_SIM == _MIPS_SIM_ABI32 |
| # define systemd_NR_memfd_create systemd_SC_arch_bias(354) |
| # elif _MIPS_SIM == _MIPS_SIM_NABI32 |
| # define systemd_NR_memfd_create systemd_SC_arch_bias(318) |
| # elif _MIPS_SIM == _MIPS_SIM_ABI64 |
| # define systemd_NR_memfd_create systemd_SC_arch_bias(314) |
| # endif |
| #elif defined __i386__ |
| # define systemd_NR_memfd_create 356 |
| #elif defined __arc__ |
| # define systemd_NR_memfd_create 279 |
| #else |
| # warning "memfd_create() syscall number unknown for your architecture" |
| #endif |
| |
| /* may be (invalid) negative number due to libseccomp, see PR 13319 */ |
| #if defined __NR_memfd_create && __NR_memfd_create >= 0 |
| # if defined systemd_NR_memfd_create |
| assert_cc(__NR_memfd_create == systemd_NR_memfd_create); |
| # endif |
| #else |
| # if defined __NR_memfd_create |
| # undef __NR_memfd_create |
| # endif |
| # if defined systemd_NR_memfd_create |
| # define __NR_memfd_create systemd_NR_memfd_create |
| # endif |
| #endif |
| |
| #if !HAVE_MEMFD_CREATE |
| static inline int missing_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 |
| } |
| |
| # define memfd_create missing_memfd_create |
| #endif |
| |
| /* ======================================================================= */ |
| |
| #if defined __x86_64__ |
| # define systemd_NR_getrandom systemd_SC_arch_bias(318) |
| #elif defined(__i386__) |
| # define systemd_NR_getrandom 355 |
| #elif defined(__arm__) |
| # define systemd_NR_getrandom 384 |
| #elif defined(__aarch64__) |
| # define systemd_NR_getrandom 278 |
| #elif defined(__ia64__) |
| # define systemd_NR_getrandom systemd_SC_arch_bias(318) |
| #elif defined(__m68k__) |
| # define systemd_NR_getrandom 352 |
| #elif defined(__s390x__) |
| # define systemd_NR_getrandom 349 |
| #elif defined(__powerpc__) |
| # define systemd_NR_getrandom 359 |
| #elif defined _MIPS_SIM |
| # if _MIPS_SIM == _MIPS_SIM_ABI32 |
| # define systemd_NR_getrandom systemd_SC_arch_bias(353) |
| # elif _MIPS_SIM == _MIPS_SIM_NABI32 |
| # define systemd_NR_getrandom systemd_SC_arch_bias(317) |
| # elif _MIPS_SIM == _MIPS_SIM_ABI64 |
| # define systemd_NR_getrandom systemd_SC_arch_bias(313) |
| # endif |
| #elif defined(__arc__) |
| # define systemd_NR_getrandom 278 |
| #else |
| # warning "getrandom() syscall number unknown for your architecture" |
| #endif |
| |
| /* may be (invalid) negative number due to libseccomp, see PR 13319 */ |
| #if defined __NR_getrandom && __NR_getrandom >= 0 |
| # if defined systemd_NR_getrandom |
| assert_cc(__NR_getrandom == systemd_NR_getrandom); |
| # endif |
| #else |
| # if defined __NR_getrandom |
| # undef __NR_getrandom |
| # endif |
| # if defined systemd_NR_getrandom |
| # define __NR_getrandom systemd_NR_getrandom |
| # endif |
| #endif |
| |
| #if !HAVE_GETRANDOM |
| static inline int missing_getrandom(void *buffer, size_t count, unsigned flags) { |
| # ifdef __NR_getrandom |
| return syscall(__NR_getrandom, buffer, count, flags); |
| # else |
| errno = ENOSYS; |
| return -1; |
| # endif |
| } |
| |
| # define getrandom missing_getrandom |
| #endif |
| |
| /* ======================================================================= */ |
| |
| /* The syscall has been defined since forever, but the glibc wrapper was missing. */ |
| #if !HAVE_GETTID |
| static inline pid_t missing_gettid(void) { |
| # if defined __NR_gettid && __NR_gettid >= 0 |
| return (pid_t) syscall(__NR_gettid); |
| # else |
| # error "__NR_gettid not defined" |
| # endif |
| } |
| |
| # define gettid missing_gettid |
| #endif |
| |
| /* ======================================================================= */ |
| |
| #if defined(__x86_64__) |
| # define systemd_NR_name_to_handle_at systemd_SC_arch_bias(303) |
| #elif defined(__i386__) |
| # define systemd_NR_name_to_handle_at 341 |
| #elif defined(__arm__) |
| # define systemd_NR_name_to_handle_at 370 |
| #elif defined __aarch64__ |
| # define systemd_NR_name_to_handle_at 264 |
| #elif defined(__powerpc__) |
| # define systemd_NR_name_to_handle_at 345 |
| #elif defined __s390__ || defined __s390x__ |
| # define systemd_NR_name_to_handle_at 335 |
| #elif defined(__arc__) |
| # define systemd_NR_name_to_handle_at 264 |
| #elif defined _MIPS_SIM |
| # if _MIPS_SIM == _MIPS_SIM_ABI32 |
| # define systemd_NR_name_to_handle_at systemd_SC_arch_bias(339) |
| # elif _MIPS_SIM == _MIPS_SIM_NABI32 |
| # define systemd_NR_name_to_handle_at systemd_SC_arch_bias(303) |
| # elif _MIPS_SIM == _MIPS_SIM_ABI64 |
| # define systemd_NR_name_to_handle_at systemd_SC_arch_bias(298) |
| # endif |
| #else |
| # warning "name_to_handle_at number is not defined" |
| #endif |
| |
| /* may be (invalid) negative number due to libseccomp, see PR 13319 */ |
| #if defined __NR_name_to_handle_at && __NR_name_to_handle_at >= 0 |
| # if defined systemd_NR_name_to_handle_at |
| assert_cc(__NR_name_to_handle_at == systemd_NR_name_to_handle_at); |
| # endif |
| #else |
| # if defined __NR_name_to_handle_at |
| # undef __NR_name_to_handle_at |
| # endif |
| # if defined systemd_NR_name_to_handle_at |
| # define __NR_name_to_handle_at systemd_NR_name_to_handle_at |
| # endif |
| #endif |
| |
| #if !HAVE_NAME_TO_HANDLE_AT |
| struct file_handle { |
| unsigned int handle_bytes; |
| int handle_type; |
| unsigned char f_handle[0]; |
| }; |
| |
| static inline int missing_name_to_handle_at(int fd, const char *name, struct file_handle *handle, int *mnt_id, int flags) { |
| # ifdef __NR_name_to_handle_at |
| return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags); |
| # else |
| errno = ENOSYS; |
| return -1; |
| # endif |
| } |
| |
| # define name_to_handle_at missing_name_to_handle_at |
| #endif |
| |
| /* ======================================================================= */ |
| |
| #if defined __aarch64__ |
| # define systemd_NR_setns 268 |
| #elif defined __arm__ |
| # define systemd_NR_setns 375 |
| #elif defined(__x86_64__) |
| # define systemd_NR_setns systemd_SC_arch_bias(308) |
| #elif defined(__i386__) |
| # define systemd_NR_setns 346 |
| #elif defined(__powerpc__) |
| # define systemd_NR_setns 350 |
| #elif defined __s390__ || defined __s390x__ |
| # define systemd_NR_setns 339 |
| #elif defined(__arc__) |
| # define systemd_NR_setns 268 |
| #elif defined _MIPS_SIM |
| # if _MIPS_SIM == _MIPS_SIM_ABI32 |
| # define systemd_NR_setns systemd_SC_arch_bias(344) |
| # elif _MIPS_SIM == _MIPS_SIM_NABI32 |
| # define systemd_NR_setns systemd_SC_arch_bias(308) |
| # elif _MIPS_SIM == _MIPS_SIM_ABI64 |
| # define systemd_NR_setns systemd_SC_arch_bias(303) |
| # endif |
| #else |
| # warning "setns() syscall number unknown for your architecture" |
| #endif |
| |
| /* may be (invalid) negative number due to libseccomp, see PR 13319 */ |
| #if defined __NR_setns && __NR_setns >= 0 |
| # if defined systemd_NR_setns |
| assert_cc(__NR_setns == systemd_NR_setns); |
| # endif |
| #else |
| # if defined __NR_setns |
| # undef __NR_setns |
| # endif |
| # if defined systemd_NR_setns |
| # define __NR_setns systemd_NR_setns |
| # endif |
| #endif |
| |
| #if !HAVE_SETNS |
| static inline int missing_setns(int fd, int nstype) { |
| # ifdef __NR_setns |
| return syscall(__NR_setns, fd, nstype); |
| # else |
| errno = ENOSYS; |
| return -1; |
| # endif |
| } |
| |
| # define setns missing_setns |
| #endif |
| |
| /* ======================================================================= */ |
| |
| static inline pid_t raw_getpid(void) { |
| #if defined(__alpha__) |
| return (pid_t) syscall(__NR_getxpid); |
| #else |
| return (pid_t) syscall(__NR_getpid); |
| #endif |
| } |
| |
| /* ======================================================================= */ |
| |
| #if defined __x86_64__ |
| # define systemd_NR_renameat2 systemd_SC_arch_bias(316) |
| #elif defined __arm__ |
| # define systemd_NR_renameat2 382 |
| #elif defined __aarch64__ |
| # define systemd_NR_renameat2 276 |
| #elif defined _MIPS_SIM |
| # if _MIPS_SIM == _MIPS_SIM_ABI32 |
| # define systemd_NR_renameat2 systemd_SC_arch_bias(351) |
| # elif _MIPS_SIM == _MIPS_SIM_NABI32 |
| # define systemd_NR_renameat2 systemd_SC_arch_bias(315) |
| # elif _MIPS_SIM == _MIPS_SIM_ABI64 |
| # define systemd_NR_renameat2 systemd_SC_arch_bias(311) |
| # endif |
| #elif defined __i386__ |
| # define systemd_NR_renameat2 353 |
| #elif defined __powerpc64__ |
| # define systemd_NR_renameat2 357 |
| #elif defined __s390__ || defined __s390x__ |
| # define systemd_NR_renameat2 347 |
| #elif defined __arc__ |
| # define systemd_NR_renameat2 276 |
| #else |
| # warning "renameat2() syscall number unknown for your architecture" |
| #endif |
| |
| /* may be (invalid) negative number due to libseccomp, see PR 13319 */ |
| #if defined __NR_renameat2 && __NR_renameat2 >= 0 |
| # if defined systemd_NR_renameat2 |
| assert_cc(__NR_renameat2 == systemd_NR_renameat2); |
| # endif |
| #else |
| # if defined __NR_renameat2 |
| # undef __NR_renameat2 |
| # endif |
| # if defined systemd_NR_renameat2 |
| # define __NR_renameat2 systemd_NR_renameat2 |
| # endif |
| #endif |
| |
| #if !HAVE_RENAMEAT2 |
| static inline int missing_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 |
| } |
| |
| # define renameat2 missing_renameat2 |
| #endif |
| |
| /* ======================================================================= */ |
| |
| #if !HAVE_KCMP |
| static inline int missing_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) { |
| # if defined __NR_kcmp && __NR_kcmp >= 0 |
| return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2); |
| # else |
| errno = ENOSYS; |
| return -1; |
| # endif |
| } |
| |
| # define kcmp missing_kcmp |
| #endif |
| |
| /* ======================================================================= */ |
| |
| #if !HAVE_KEYCTL |
| static inline long missing_keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5) { |
| # if defined __NR_keyctl && __NR_keyctl >= 0 |
| return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5); |
| # else |
| errno = ENOSYS; |
| return -1; |
| # endif |
| |
| # define keyctl missing_keyctl |
| } |
| |
| static inline key_serial_t missing_add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) { |
| # if defined __NR_add_key && __NR_add_key >= 0 |
| return syscall(__NR_add_key, type, description, payload, plen, ringid); |
| # else |
| errno = ENOSYS; |
| return -1; |
| # endif |
| |
| # define add_key missing_add_key |
| } |
| |
| static inline key_serial_t missing_request_key(const char *type, const char *description, const char * callout_info, key_serial_t destringid) { |
| # if defined __NR_request_key && __NR_request_key >= 0 |
| return syscall(__NR_request_key, type, description, callout_info, destringid); |
| # else |
| errno = ENOSYS; |
| return -1; |
| # endif |
| |
| # define request_key missing_request_key |
| } |
| #endif |
| |
| /* ======================================================================= */ |
| |
| #if defined(__x86_64__) |
| # define systemd_NR_copy_file_range systemd_SC_arch_bias(326) |
| #elif defined(__i386__) |
| # define systemd_NR_copy_file_range 377 |
| #elif defined __s390__ |
| # define systemd_NR_copy_file_range 375 |
| #elif defined __arm__ |
| # define systemd_NR_copy_file_range 391 |
| #elif defined __aarch64__ |
| # define systemd_NR_copy_file_range 285 |
| #elif defined __powerpc__ |
| # define systemd_NR_copy_file_range 379 |
| #elif defined __arc__ |
| # define systemd_NR_copy_file_range 285 |
| #elif defined _MIPS_SIM |
| # if _MIPS_SIM == _MIPS_SIM_ABI32 |
| # define systemd_NR_copy_file_range systemd_SC_arch_bias(360) |
| # elif _MIPS_SIM == _MIPS_SIM_NABI32 |
| # define systemd_NR_copy_file_range systemd_SC_arch_bias(324) |
| # elif _MIPS_SIM == _MIPS_SIM_ABI64 |
| # define systemd_NR_copy_file_range systemd_SC_arch_bias(320) |
| # endif |
| #else |
| # warning "copy_file_range() syscall number unknown for your architecture" |
| #endif |
| |
| /* may be (invalid) negative number due to libseccomp, see PR 13319 */ |
| #if defined __NR_copy_file_range && __NR_copy_file_range >= 0 |
| # if defined systemd_NR_copy_file_range |
| assert_cc(__NR_copy_file_range == systemd_NR_copy_file_range); |
| # endif |
| #else |
| # if defined __NR_copy_file_range |
| # undef __NR_copy_file_range |
| # endif |
| # if defined systemd_NR_copy_file_range |
| # define __NR_copy_file_range systemd_NR_copy_file_range |
| # endif |
| #endif |
| |
| #if !HAVE_COPY_FILE_RANGE |
| 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 |
| |
| /* ======================================================================= */ |
| |
| #if defined __i386__ |
| # define systemd_NR_bpf 357 |
| #elif defined __x86_64__ |
| # define systemd_NR_bpf systemd_SC_arch_bias(321) |
| #elif defined __aarch64__ |
| # define systemd_NR_bpf 280 |
| #elif defined __arm__ |
| # define systemd_NR_bpf 386 |
| #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 |
| |
| /* ======================================================================= */ |
| |
| #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 |