/* SPDX-License-Identifier: LGPL-2.1-or-later */ #pragma once /* Missing glibc definitions to access certain kernel APIs */ #include #include #include #include #include #include #include #ifdef ARCH_MIPS #include #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 /* ======================================================================= */ #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