diff options
Diffstat (limited to '')
| -rw-r--r-- | src/basic/missing_syscall.h | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/src/basic/missing_syscall.h b/src/basic/missing_syscall.h new file mode 100644 index 0000000..d1aa322 --- /dev/null +++ b/src/basic/missing_syscall.h @@ -0,0 +1,446 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ +#pragma once + +/* Missing glibc definitions to access certain kernel APIs */ + +#include <errno.h> +#include <fcntl.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <unistd.h> + +#ifdef ARCH_MIPS +#include <asm/sgidefs.h> +#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 !HAVE_MEMFD_CREATE +# ifndef __NR_memfd_create +# if defined __x86_64__ +# define __NR_memfd_create 319 +# elif defined __arm__ +# define __NR_memfd_create 385 +# elif defined __aarch64__ +# define __NR_memfd_create 279 +# elif defined __s390__ +# define __NR_memfd_create 350 +# elif defined _MIPS_SIM +# if _MIPS_SIM == _MIPS_SIM_ABI32 +# define __NR_memfd_create 4354 +# endif +# if _MIPS_SIM == _MIPS_SIM_NABI32 +# define __NR_memfd_create 6318 +# endif +# if _MIPS_SIM == _MIPS_SIM_ABI64 +# define __NR_memfd_create 5314 +# endif +# elif defined __i386__ +# define __NR_memfd_create 356 +# elif defined __arc__ +# define __NR_memfd_create 279 +# else +# warning "__NR_memfd_create unknown for your architecture" +# endif +# endif + +static inline int 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 !HAVE_GETRANDOM +# ifndef __NR_getrandom +# if defined __x86_64__ +# define __NR_getrandom 318 +# elif defined(__i386__) +# define __NR_getrandom 355 +# elif defined(__arm__) +# define __NR_getrandom 384 +# elif defined(__aarch64__) +# define __NR_getrandom 278 +# elif defined(__ia64__) +# define __NR_getrandom 1339 +# elif defined(__m68k__) +# define __NR_getrandom 352 +# elif defined(__s390x__) +# define __NR_getrandom 349 +# elif defined(__powerpc__) +# define __NR_getrandom 359 +# elif defined _MIPS_SIM +# if _MIPS_SIM == _MIPS_SIM_ABI32 +# define __NR_getrandom 4353 +# endif +# if _MIPS_SIM == _MIPS_SIM_NABI32 +# define __NR_getrandom 6317 +# endif +# if _MIPS_SIM == _MIPS_SIM_ABI64 +# define __NR_getrandom 5313 +# endif +# elif defined(__arc__) +# define __NR_getrandom 278 +# else +# warning "__NR_getrandom unknown for your architecture" +# endif +# endif + +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 + +/* ======================================================================= */ + +#if !HAVE_GETTID +static inline pid_t missing_gettid(void) { + return (pid_t) syscall(__NR_gettid); +} + +# define gettid missing_gettid +#endif + +/* ======================================================================= */ + +#if !HAVE_NAME_TO_HANDLE_AT +# ifndef __NR_name_to_handle_at +# if defined(__x86_64__) +# define __NR_name_to_handle_at 303 +# elif defined(__i386__) +# define __NR_name_to_handle_at 341 +# elif defined(__arm__) +# define __NR_name_to_handle_at 370 +# elif defined(__powerpc__) +# define __NR_name_to_handle_at 345 +# elif defined(__arc__) +# define __NR_name_to_handle_at 264 +# else +# error "__NR_name_to_handle_at is not defined" +# endif +# endif + +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 !HAVE_SETNS +# ifndef __NR_setns +# if defined(__x86_64__) +# define __NR_setns 308 +# elif defined(__i386__) +# define __NR_setns 346 +# elif defined(__arc__) +# define __NR_setns 268 +# else +# error "__NR_setns is not defined" +# endif +# endif + +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 !HAVE_RENAMEAT2 +# ifndef __NR_renameat2 +# if defined __x86_64__ +# define __NR_renameat2 316 +# elif defined __arm__ +# define __NR_renameat2 382 +# elif defined __aarch64__ +# define __NR_renameat2 276 +# elif defined _MIPS_SIM +# if _MIPS_SIM == _MIPS_SIM_ABI32 +# define __NR_renameat2 4351 +# endif +# if _MIPS_SIM == _MIPS_SIM_NABI32 +# define __NR_renameat2 6315 +# endif +# if _MIPS_SIM == _MIPS_SIM_ABI64 +# define __NR_renameat2 5311 +# endif +# elif defined __i386__ +# define __NR_renameat2 353 +# elif defined __powerpc64__ +# define __NR_renameat2 357 +# elif defined __s390__ || defined __s390x__ +# define __NR_renameat2 347 +# elif defined __arc__ +# define __NR_renameat2 276 +# else +# warning "__NR_renameat2 unknown for your architecture" +# endif +# endif + +static inline int 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) { +# ifdef __NR_kcmp + 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) { +# ifdef __NR_keyctl + 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) { +# ifdef __NR_add_key + 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) { +# ifdef __NR_request_key + return syscall(__NR_request_key, type, description, callout_info, destringid); +# else + errno = ENOSYS; + return -1; +# endif + +# define request_key missing_request_key +} +#endif + +/* ======================================================================= */ + +#if !HAVE_COPY_FILE_RANGE +# ifndef __NR_copy_file_range +# if defined(__x86_64__) +# define __NR_copy_file_range 326 +# elif defined(__i386__) +# define __NR_copy_file_range 377 +# elif defined __s390__ +# define __NR_copy_file_range 375 +# elif defined __arm__ +# define __NR_copy_file_range 391 +# elif defined __aarch64__ +# define __NR_copy_file_range 285 +# elif defined __powerpc__ +# define __NR_copy_file_range 379 +# elif defined __arc__ +# define __NR_copy_file_range 285 +# else +# warning "__NR_copy_file_range not defined for your architecture" +# endif +# endif + +static inline ssize_t missing_copy_file_range(int fd_in, loff_t *off_in, + int fd_out, loff_t *off_out, + size_t len, + unsigned int flags) { +# ifdef __NR_copy_file_range + return syscall(__NR_copy_file_range, fd_in, off_in, fd_out, off_out, len, flags); +# else + errno = ENOSYS; + return -1; +# endif +} + +# define copy_file_range missing_copy_file_range +#endif + +/* ======================================================================= */ + +#if !HAVE_BPF +# ifndef __NR_bpf +# if defined __i386__ +# define __NR_bpf 357 +# elif defined __x86_64__ +# define __NR_bpf 321 +# elif defined __aarch64__ +# define __NR_bpf 280 +# elif defined __arm__ +# define __NR_bpf 386 +# elif defined __sparc__ +# define __NR_bpf 349 +# elif defined __s390__ +# define __NR_bpf 351 +# elif defined __tilegx__ +# define __NR_bpf 280 +# else +# warning "__NR_bpf not defined for your architecture" +# endif +# endif + +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 +# ifndef __NR_pkey_mprotect +# if defined __i386__ +# define __NR_pkey_mprotect 380 +# elif defined __x86_64__ +# define __NR_pkey_mprotect 329 +# elif defined __arm__ +# define __NR_pkey_mprotect 394 +# elif defined __aarch64__ +# define __NR_pkey_mprotect 394 +# elif defined __powerpc__ +# define __NR_pkey_mprotect 386 +# elif defined _MIPS_SIM +# if _MIPS_SIM == _MIPS_SIM_ABI32 +# define __NR_pkey_mprotect 4363 +# endif +# if _MIPS_SIM == _MIPS_SIM_NABI32 +# define __NR_pkey_mprotect 6327 +# endif +# if _MIPS_SIM == _MIPS_SIM_ABI64 +# define __NR_pkey_mprotect 5323 +# endif +# else +# warning "__NR_pkey_mprotect not defined for your architecture" +# endif +# endif +#endif + +/* ======================================================================= */ + +#if !HAVE_STATX +# ifndef __NR_statx +# if defined __aarch64__ || defined __arm__ +# define __NR_statx 397 +# elif defined __alpha__ +# define __NR_statx 522 +# elif defined __i386__ || defined __powerpc64__ +# define __NR_statx 383 +# elif defined __sparc__ +# define __NR_statx 360 +# elif defined __x86_64__ +# define __NR_statx 332 +# else +# warning "__NR_statx not defined for your architecture" +# endif +# endif + +struct statx; +#endif + +/* This typedef is supposed to be always defined. */ +typedef struct statx struct_statx; + +#if !HAVE_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 +} + +# define statx missing_statx +#endif |