/* Copyright (c) 2005-2011, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * --- * Author: Markus Gutschke */ /* This file includes Linux-specific support functions common to the * coredumper and the thread lister; primarily, this is a collection * of direct system calls, and a couple of symbols missing from * standard header files. * There are a few options that the including file can set to control * the behavior of this file: * * SYS_CPLUSPLUS: * The entire header file will normally be wrapped in 'extern "C" { }", * making it suitable for compilation as both C and C++ source. If you * do not want to do this, you can set the SYS_CPLUSPLUS macro to inhibit * the wrapping. N.B. doing so will suppress inclusion of all prerequisite * system header files, too. It is the caller's responsibility to provide * the necessary definitions. * * SYS_ERRNO: * All system calls will update "errno" unless overriden by setting the * SYS_ERRNO macro prior to including this file. SYS_ERRNO should be * an l-value. * * SYS_INLINE: * New symbols will be defined "static inline", unless overridden by * the SYS_INLINE macro. * * SYS_LINUX_SYSCALL_SUPPORT_H * This macro is used to avoid multiple inclusions of this header file. * If you need to include this file more than once, make sure to * unset SYS_LINUX_SYSCALL_SUPPORT_H before each inclusion. * * SYS_PREFIX: * New system calls will have a prefix of "sys_" unless overridden by * the SYS_PREFIX macro. Valid values for this macro are [0..9] which * results in prefixes "sys[0..9]_". It is also possible to set this * macro to -1, which avoids all prefixes. * * SYS_SYSCALL_ENTRYPOINT: * Some applications (such as sandboxes that filter system calls), need * to be able to run custom-code each time a system call is made. If this * macro is defined, it expands to the name of a "common" symbol. If * this symbol is assigned a non-NULL pointer value, it is used as the * address of the system call entrypoint. * A pointer to this symbol can be obtained by calling * get_syscall_entrypoint() * * This file defines a few internal symbols that all start with "LSS_". * Do not access these symbols from outside this file. They are not part * of the supported API. */ #ifndef SYS_LINUX_SYSCALL_SUPPORT_H #define SYS_LINUX_SYSCALL_SUPPORT_H /* We currently only support x86-32, x86-64, ARM, MIPS, PPC, s390 and s390x * on Linux. * Porting to other related platforms should not be difficult. */ #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) || \ defined(__mips__) || defined(__PPC__) || defined(__ARM_EABI__) || \ defined(__aarch64__) || defined(__s390__) || defined(__e2k__) || \ (defined(__riscv) && __riscv_xlen == 64) || defined(__loongarch_lp64)) \ && (defined(__linux) || defined(__ANDROID__)) #ifndef SYS_CPLUSPLUS #ifdef __cplusplus /* Some system header files in older versions of gcc neglect to properly * handle being included from C++. As it appears to be harmless to have * multiple nested 'extern "C"' blocks, just add another one here. */ extern "C" { #endif #include <errno.h> #include <fcntl.h> #include <sched.h> #include <signal.h> #include <stdarg.h> #include <stddef.h> #include <stdint.h> #include <string.h> #include <sys/ptrace.h> #include <sys/resource.h> #include <sys/time.h> #include <sys/types.h> #include <sys/syscall.h> #include <unistd.h> #include <linux/unistd.h> #include <endian.h> #ifdef __mips__ /* Include definitions of the ABI currently in use. */ #ifdef __ANDROID__ /* Android doesn't have sgidefs.h, but does have asm/sgidefs.h, * which has the definitions we need. */ #include <asm/sgidefs.h> #else #include <sgidefs.h> #endif #endif #endif /* Some libcs, for example Android NDK and musl, #define these * macros as aliases to their non-64 counterparts. To avoid naming * conflict, remove them. * * These are restored by the corresponding #pragma pop_macro near * the end of this file. */ #pragma push_macro("stat64") #pragma push_macro("fstat64") #pragma push_macro("lstat64") #pragma push_macro("pread64") #pragma push_macro("pwrite64") #pragma push_macro("getdents64") #undef stat64 #undef fstat64 #undef lstat64 #undef pread64 #undef pwrite64 #undef getdents64 #if defined(__ANDROID__) && defined(__x86_64__) // A number of x86_64 syscalls are blocked by seccomp on recent Android; // undefine them so that modern alternatives will be used instead where // possible. // The alternative syscalls have been sanity checked against linux-3.4+; // older versions might not work. # undef __NR_getdents # undef __NR_dup2 # undef __NR_fork # undef __NR_getpgrp # undef __NR_open # undef __NR_poll # undef __NR_readlink # undef __NR_stat # undef __NR_unlink # undef __NR_pipe #endif #if defined(__ANDROID__) // waitpid is blocked by seccomp on all architectures on recent Android. # undef __NR_waitpid #endif /* As glibc often provides subtly incompatible data structures (and implicit * wrapper functions that convert them), we provide our own kernel data * structures for use by the system calls. * These structures have been developed by using Linux 2.6.23 headers for * reference. Note though, we do not care about exact API compatibility * with the kernel, and in fact the kernel often does not have a single * API that works across architectures. Instead, we try to mimic the glibc * API where reasonable, and only guarantee ABI compatibility with the * kernel headers. * Most notably, here are a few changes that were made to the structures * defined by kernel headers: * * - we only define structures, but not symbolic names for kernel data * types. For the latter, we directly use the native C datatype * (i.e. "unsigned" instead of "mode_t"). * - in a few cases, it is possible to define identical structures for * both 32bit (e.g. i386) and 64bit (e.g. x86-64) platforms by * standardizing on the 64bit version of the data types. In particular, * this means that we use "unsigned" where the 32bit headers say * "unsigned long". * - overall, we try to minimize the number of cases where we need to * conditionally define different structures. * - the "struct kernel_sigaction" class of structures have been * modified to more closely mimic glibc's API by introducing an * anonymous union for the function pointer. * - a small number of field names had to have an underscore appended to * them, because glibc defines a global macro by the same name. */ /* include/linux/dirent.h */ struct kernel_dirent64 { … }; /* include/linux/dirent.h */ #if !defined(__NR_getdents) // when getdents is not available, getdents64 is used for both. #define kernel_dirent … #else struct kernel_dirent { … }; #endif /* include/linux/uio.h */ struct kernel_iovec { … }; /* include/linux/socket.h */ struct kernel_msghdr { … }; /* include/asm-generic/poll.h */ struct kernel_pollfd { … }; /* include/linux/resource.h */ struct kernel_rlimit { … }; /* include/linux/time.h */ struct kernel_timespec { … }; /* include/linux/time.h */ struct kernel_timeval { … }; /* include/linux/time.h */ struct kernel_itimerval { … }; /* include/linux/resource.h */ struct kernel_rusage { … }; #if defined(__i386__) || defined(__ARM_EABI__) || defined(__ARM_ARCH_3__) \ || defined(__PPC__) || (defined(__s390__) && !defined(__s390x__)) \ || defined(__e2k__) /* include/asm-{arm,i386,mips,ppc}/signal.h */ struct kernel_old_sigaction { union { void (*sa_handler_)(int); void (*sa_sigaction_)(int, siginfo_t *, void *); }; unsigned long sa_mask; unsigned long sa_flags; void (*sa_restorer)(void); } __attribute__((packed,aligned(4))); #elif (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) #define kernel_old_sigaction … #elif defined(__aarch64__) || defined(__riscv) || defined(__loongarch_lp64) // No kernel_old_sigaction defined for arm64 riscv and loongarch64. #endif /* Some kernel functions (e.g. sigaction() in 2.6.23) require that the * exactly match the size of the signal set, even though the API was * intended to be extensible. We define our own KERNEL_NSIG to deal with * this. * Please note that glibc provides signals [1.._NSIG-1], whereas the * kernel (and this header) provides the range [1..KERNEL_NSIG]. The * actual number of signals is obviously the same, but the constants * differ by one. */ #ifdef __mips__ #define KERNEL_NSIG … #else #define KERNEL_NSIG … #endif /* include/asm-{arm,aarch64,i386,mips,x86_64}/signal.h */ struct kernel_sigset_t { … }; /* include/asm-{arm,i386,mips,x86_64,ppc}/signal.h */ struct kernel_sigaction { … }; /* include/linux/socket.h */ struct kernel_sockaddr { … }; /* include/asm-{arm,aarch64,i386,mips,ppc,s390}/stat.h */ #ifdef __mips__ #if _MIPS_SIM == _MIPS_SIM_ABI64 typedef unsigned long long kernel_blkcnt_t; typedef unsigned kernel_blksize_t; typedef unsigned kernel_dev_t; typedef unsigned kernel_gid_t; typedef unsigned long long kernel_ino_t; typedef unsigned kernel_mode_t; typedef unsigned kernel_nlink_t; typedef long long kernel_off_t; typedef unsigned kernel_time_t; typedef unsigned kernel_uid_t; struct kernel_stat { #else struct kernel_stat64 { #endif unsigned st_dev; unsigned __pad0[3]; unsigned long long st_ino; unsigned st_mode; unsigned st_nlink; unsigned st_uid; unsigned st_gid; unsigned st_rdev; unsigned __pad1[3]; long long st_size; unsigned st_atime_; unsigned st_atime_nsec_; unsigned st_mtime_; unsigned st_mtime_nsec_; unsigned st_ctime_; unsigned st_ctime_nsec_; unsigned st_blksize; unsigned __pad2; unsigned long long st_blocks; }; #elif defined __PPC__ struct kernel_stat64 { unsigned long long st_dev; unsigned long long st_ino; unsigned st_mode; unsigned st_nlink; unsigned st_uid; unsigned st_gid; unsigned long long st_rdev; unsigned short int __pad2; long long st_size; long st_blksize; long long st_blocks; long st_atime_; unsigned long st_atime_nsec_; long st_mtime_; unsigned long st_mtime_nsec_; long st_ctime_; unsigned long st_ctime_nsec_; unsigned long __unused4; unsigned long __unused5; }; #elif defined(__e2k__) struct kernel_stat64 { unsigned long long st_dev; unsigned long long st_ino; unsigned int st_mode; unsigned int st_nlink; unsigned int st_uid; unsigned int st_gid; unsigned long long st_rdev; long long st_size; int st_blksize; int __pad2; unsigned long long st_blocks; int st_atime_; unsigned int st_atime_nsec_; int st_mtime_; unsigned int st_mtime_nsec_; int st_ctime_; unsigned int st_ctime_nsec_; unsigned int __unused4; unsigned int __unused5; }; #else struct kernel_stat64 { … }; #endif /* include/asm-{arm,aarch64,i386,mips,x86_64,ppc,s390}/stat.h */ #if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) typedef unsigned kernel_blkcnt_t; typedef unsigned kernel_blksize_t; typedef unsigned short kernel_dev_t; typedef unsigned short kernel_gid_t; typedef unsigned kernel_ino_t; typedef unsigned short kernel_mode_t; typedef unsigned short kernel_nlink_t; typedef unsigned kernel_off_t; typedef unsigned kernel_time_t; typedef unsigned short kernel_uid_t; struct kernel_stat { /* The kernel headers suggest that st_dev and st_rdev should be 32bit * quantities encoding 12bit major and 20bit minor numbers in an interleaved * format. In reality, we do not see useful data in the top bits. So, * we'll leave the padding in here, until we find a better solution. */ kernel_dev_t st_dev; short pad1; kernel_ino_t st_ino; kernel_mode_t st_mode; kernel_nlink_t st_nlink; kernel_uid_t st_uid; kernel_gid_t st_gid; kernel_dev_t st_rdev; short pad2; kernel_off_t st_size; kernel_blksize_t st_blksize; kernel_blkcnt_t st_blocks; kernel_time_t st_atime_; unsigned st_atime_nsec_; kernel_time_t st_mtime_; unsigned st_mtime_nsec_; kernel_time_t st_ctime_; unsigned st_ctime_nsec_; unsigned __unused4; unsigned __unused5; }; #elif defined(__x86_64__) kernel_blkcnt_t; kernel_blksize_t; kernel_dev_t; kernel_gid_t; kernel_ino_t; kernel_mode_t; kernel_nlink_t; kernel_off_t; kernel_time_t; kernel_uid_t; struct kernel_stat { … }; #elif defined(__PPC__) typedef unsigned long kernel_blkcnt_t; typedef unsigned long kernel_blksize_t; typedef unsigned kernel_dev_t; typedef unsigned kernel_gid_t; typedef unsigned long kernel_ino_t; typedef unsigned long kernel_mode_t; typedef unsigned short kernel_nlink_t; typedef long kernel_off_t; typedef unsigned long kernel_time_t; typedef unsigned kernel_uid_t; struct kernel_stat { kernel_dev_t st_dev; kernel_ino_t st_ino; kernel_mode_t st_mode; kernel_nlink_t st_nlink; kernel_gid_t st_uid; kernel_uid_t st_gid; kernel_dev_t st_rdev; kernel_off_t st_size; kernel_blksize_t st_blksize; kernel_blkcnt_t st_blocks; kernel_time_t st_atime_; unsigned long st_atime_nsec_; kernel_time_t st_mtime_; unsigned long st_mtime_nsec_; kernel_time_t st_ctime_; unsigned long st_ctime_nsec_; unsigned long __unused4; unsigned long __unused5; }; #elif (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64) typedef int kernel_blkcnt_t; typedef int kernel_blksize_t; typedef unsigned kernel_dev_t; typedef unsigned kernel_gid_t; typedef unsigned kernel_ino_t; typedef unsigned kernel_mode_t; typedef unsigned kernel_nlink_t; typedef long kernel_off_t; typedef long kernel_time_t; typedef unsigned kernel_uid_t; struct kernel_stat { kernel_dev_t st_dev; int st_pad1[3]; kernel_ino_t st_ino; kernel_mode_t st_mode; kernel_nlink_t st_nlink; kernel_uid_t st_uid; kernel_gid_t st_gid; kernel_dev_t st_rdev; int st_pad2[2]; kernel_off_t st_size; int st_pad3; kernel_time_t st_atime_; long st_atime_nsec_; kernel_time_t st_mtime_; long st_mtime_nsec_; kernel_time_t st_ctime_; long st_ctime_nsec_; kernel_blksize_t st_blksize; kernel_blkcnt_t st_blocks; int st_pad4[14]; }; #elif defined(__aarch64__) || defined(__riscv) || defined(__loongarch_lp64) typedef long kernel_blkcnt_t; typedef int kernel_blksize_t; typedef unsigned long kernel_dev_t; typedef unsigned int kernel_gid_t; typedef unsigned long kernel_ino_t; typedef unsigned int kernel_mode_t; typedef unsigned int kernel_nlink_t; typedef long kernel_off_t; typedef long kernel_time_t; typedef unsigned int kernel_uid_t; struct kernel_stat { kernel_dev_t st_dev; kernel_ino_t st_ino; kernel_mode_t st_mode; kernel_nlink_t st_nlink; kernel_uid_t st_uid; kernel_gid_t st_gid; kernel_dev_t st_rdev; unsigned long __pad1; kernel_off_t st_size; kernel_blksize_t st_blksize; int __pad2; kernel_blkcnt_t st_blocks; kernel_time_t st_atime_; unsigned long st_atime_nsec_; kernel_time_t st_mtime_; unsigned long st_mtime_nsec_; kernel_time_t st_ctime_; unsigned long st_ctime_nsec_; unsigned int __unused4; unsigned int __unused5; }; #elif defined(__s390x__) typedef long kernel_blkcnt_t; typedef unsigned long kernel_blksize_t; typedef unsigned long kernel_dev_t; typedef unsigned int kernel_gid_t; typedef unsigned long kernel_ino_t; typedef unsigned int kernel_mode_t; typedef unsigned long kernel_nlink_t; typedef unsigned long kernel_off_t; typedef unsigned long kernel_time_t; typedef unsigned int kernel_uid_t; struct kernel_stat { kernel_dev_t st_dev; kernel_ino_t st_ino; kernel_nlink_t st_nlink; kernel_mode_t st_mode; kernel_uid_t st_uid; kernel_gid_t st_gid; unsigned int __pad1; kernel_dev_t st_rdev; kernel_off_t st_size; kernel_time_t st_atime_; unsigned long st_atime_nsec_; kernel_time_t st_mtime_; unsigned long st_mtime_nsec_; kernel_time_t st_ctime_; unsigned long st_ctime_nsec_; kernel_blksize_t st_blksize; kernel_blkcnt_t st_blocks; unsigned long __unused[3]; }; #elif defined(__s390__) typedef unsigned long kernel_blkcnt_t; typedef unsigned long kernel_blksize_t; typedef unsigned short kernel_dev_t; typedef unsigned short kernel_gid_t; typedef unsigned long kernel_ino_t; typedef unsigned short kernel_mode_t; typedef unsigned short kernel_nlink_t; typedef unsigned long kernel_off_t; typedef unsigned long kernel_time_t; typedef unsigned short kernel_uid_t; struct kernel_stat { kernel_dev_t st_dev; unsigned short __pad1; kernel_ino_t st_ino; kernel_mode_t st_mode; kernel_nlink_t st_nlink; kernel_uid_t st_uid; kernel_gid_t st_gid; kernel_dev_t st_rdev; unsigned short __pad2; kernel_off_t st_size; kernel_blksize_t st_blksize; kernel_blkcnt_t st_blocks; kernel_time_t st_atime_; unsigned long st_atime_nsec_; kernel_time_t st_mtime_; unsigned long st_mtime_nsec_; kernel_time_t st_ctime_; unsigned long st_ctime_nsec_; unsigned long __unused4; unsigned long __unused5; }; #elif defined(__e2k__) typedef unsigned long kernel_blkcnt_t; typedef unsigned long kernel_blksize_t; typedef unsigned long kernel_dev_t; typedef unsigned int kernel_gid_t; typedef unsigned long kernel_ino_t; typedef unsigned int kernel_mode_t; typedef unsigned long kernel_nlink_t; typedef unsigned long kernel_off_t; typedef unsigned long kernel_time_t; typedef unsigned int kernel_uid_t; struct kernel_stat { kernel_dev_t st_dev; kernel_ino_t st_ino; kernel_mode_t st_mode; kernel_nlink_t st_nlink; kernel_uid_t st_uid; kernel_gid_t st_gid; kernel_dev_t st_rdev; kernel_off_t st_size; kernel_blksize_t st_blksize; kernel_blkcnt_t st_blocks; kernel_time_t st_atime_; unsigned long st_atime_nsec_; kernel_time_t st_mtime_; unsigned long st_mtime_nsec_; kernel_time_t st_ctime_; unsigned long st_ctime_nsec_; }; #endif /* include/asm-{arm,aarch64,i386,mips,x86_64,ppc,s390}/statfs.h */ #ifdef __mips__ #if _MIPS_SIM != _MIPS_SIM_ABI64 struct kernel_statfs64 { unsigned long f_type; unsigned long f_bsize; unsigned long f_frsize; unsigned long __pad; unsigned long long f_blocks; unsigned long long f_bfree; unsigned long long f_files; unsigned long long f_ffree; unsigned long long f_bavail; struct { int val[2]; } f_fsid; unsigned long f_namelen; unsigned long f_spare[6]; }; #endif #elif defined(__s390__) /* See also arch/s390/include/asm/compat.h */ struct kernel_statfs64 { unsigned int f_type; unsigned int f_bsize; unsigned long long f_blocks; unsigned long long f_bfree; unsigned long long f_bavail; unsigned long long f_files; unsigned long long f_ffree; struct { int val[2]; } f_fsid; unsigned int f_namelen; unsigned int f_frsize; unsigned int f_flags; unsigned int f_spare[4]; }; #elif !defined(__x86_64__) struct kernel_statfs64 { unsigned long f_type; unsigned long f_bsize; unsigned long long f_blocks; unsigned long long f_bfree; unsigned long long f_bavail; unsigned long long f_files; unsigned long long f_ffree; struct { int val[2]; } f_fsid; unsigned long f_namelen; unsigned long f_frsize; unsigned long f_spare[5]; }; #endif /* include/asm-{arm,i386,mips,x86_64,ppc,generic,s390}/statfs.h */ #ifdef __mips__ struct kernel_statfs { long f_type; long f_bsize; long f_frsize; long f_blocks; long f_bfree; long f_files; long f_ffree; long f_bavail; struct { int val[2]; } f_fsid; long f_namelen; long f_spare[6]; }; #elif defined(__x86_64__) struct kernel_statfs { … }; #elif defined(__s390__) struct kernel_statfs { unsigned int f_type; unsigned int f_bsize; unsigned long f_blocks; unsigned long f_bfree; unsigned long f_bavail; unsigned long f_files; unsigned long f_ffree; struct { int val[2]; } f_fsid; unsigned int f_namelen; unsigned int f_frsize; unsigned int f_flags; unsigned int f_spare[4]; }; #else struct kernel_statfs { unsigned long f_type; unsigned long f_bsize; unsigned long f_blocks; unsigned long f_bfree; unsigned long f_bavail; unsigned long f_files; unsigned long f_ffree; struct { int val[2]; } f_fsid; unsigned long f_namelen; unsigned long f_frsize; unsigned long f_spare[5]; }; #endif struct kernel_statx_timestamp { … }; struct kernel_statx { … }; /* Definitions missing from the standard header files */ #ifndef O_DIRECTORY #if defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || defined(__aarch64__) #define O_DIRECTORY … #else #define O_DIRECTORY … #endif #endif #ifndef NT_PRXFPREG #define NT_PRXFPREG … #endif #ifndef PTRACE_GETFPXREGS #define PTRACE_GETFPXREGS … #endif #ifndef PR_GET_DUMPABLE #define PR_GET_DUMPABLE … #endif #ifndef PR_SET_DUMPABLE #define PR_SET_DUMPABLE … #endif #ifndef PR_GET_SECCOMP #define PR_GET_SECCOMP … #endif #ifndef PR_SET_SECCOMP #define PR_SET_SECCOMP … #endif #ifndef AT_FDCWD #define AT_FDCWD … #endif #ifndef AT_SYMLINK_NOFOLLOW #define AT_SYMLINK_NOFOLLOW … #endif #ifndef AT_REMOVEDIR #define AT_REMOVEDIR … #endif #ifndef AT_NO_AUTOMOUNT #define AT_NO_AUTOMOUNT … #endif #ifndef AT_EMPTY_PATH #define AT_EMPTY_PATH … #endif #ifndef STATX_BASIC_STATS #define STATX_BASIC_STATS … #endif #ifndef AT_STATX_SYNC_AS_STAT #define AT_STATX_SYNC_AS_STAT … #endif #ifndef MREMAP_FIXED #define MREMAP_FIXED … #endif #ifndef SA_RESTORER #define SA_RESTORER … #endif #ifndef CPUCLOCK_PROF #define CPUCLOCK_PROF … #endif #ifndef CPUCLOCK_VIRT #define CPUCLOCK_VIRT … #endif #ifndef CPUCLOCK_SCHED #define CPUCLOCK_SCHED … #endif #ifndef CPUCLOCK_PERTHREAD_MASK #define CPUCLOCK_PERTHREAD_MASK … #endif #ifndef MAKE_PROCESS_CPUCLOCK #define MAKE_PROCESS_CPUCLOCK(pid, clock) … #endif #ifndef MAKE_THREAD_CPUCLOCK #define MAKE_THREAD_CPUCLOCK(tid, clock) … #endif #ifndef FUTEX_WAIT #define FUTEX_WAIT … #endif #ifndef FUTEX_WAKE #define FUTEX_WAKE … #endif #ifndef FUTEX_FD #define FUTEX_FD … #endif #ifndef FUTEX_REQUEUE #define FUTEX_REQUEUE … #endif #ifndef FUTEX_CMP_REQUEUE #define FUTEX_CMP_REQUEUE … #endif #ifndef FUTEX_WAKE_OP #define FUTEX_WAKE_OP … #endif #ifndef FUTEX_LOCK_PI #define FUTEX_LOCK_PI … #endif #ifndef FUTEX_UNLOCK_PI #define FUTEX_UNLOCK_PI … #endif #ifndef FUTEX_TRYLOCK_PI #define FUTEX_TRYLOCK_PI … #endif #ifndef FUTEX_PRIVATE_FLAG #define FUTEX_PRIVATE_FLAG … #endif #ifndef FUTEX_CMD_MASK #define FUTEX_CMD_MASK … #endif #ifndef FUTEX_WAIT_PRIVATE #define FUTEX_WAIT_PRIVATE … #endif #ifndef FUTEX_WAKE_PRIVATE #define FUTEX_WAKE_PRIVATE … #endif #ifndef FUTEX_REQUEUE_PRIVATE #define FUTEX_REQUEUE_PRIVATE … #endif #ifndef FUTEX_CMP_REQUEUE_PRIVATE #define FUTEX_CMP_REQUEUE_PRIVATE … #endif #ifndef FUTEX_WAKE_OP_PRIVATE #define FUTEX_WAKE_OP_PRIVATE … #endif #ifndef FUTEX_LOCK_PI_PRIVATE #define FUTEX_LOCK_PI_PRIVATE … #endif #ifndef FUTEX_UNLOCK_PI_PRIVATE #define FUTEX_UNLOCK_PI_PRIVATE … #endif #ifndef FUTEX_TRYLOCK_PI_PRIVATE #define FUTEX_TRYLOCK_PI_PRIVATE … #endif #if defined(__x86_64__) #ifndef ARCH_SET_GS #define ARCH_SET_GS … #endif #ifndef ARCH_GET_GS #define ARCH_GET_GS … #endif #endif #if defined(__i386__) #ifndef __NR_quotactl #define __NR_quotactl … #endif #ifndef __NR_setresuid #define __NR_setresuid … #define __NR_getresuid … #define __NR_setresgid … #define __NR_getresgid … #endif #ifndef __NR_rt_sigaction #define __NR_rt_sigreturn … #define __NR_rt_sigaction … #define __NR_rt_sigprocmask … #define __NR_rt_sigpending … #define __NR_rt_sigsuspend … #endif #ifndef __NR_pread64 #define __NR_pread64 … #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 … #endif #ifndef __NR_ugetrlimit #define __NR_ugetrlimit … #endif #ifndef __NR_stat64 #define __NR_stat64 … #endif #ifndef __NR_fstat64 #define __NR_fstat64 … #endif #ifndef __NR_setresuid32 #define __NR_setresuid32 … #define __NR_getresuid32 … #define __NR_setresgid32 … #define __NR_getresgid32 … #endif #ifndef __NR_setfsuid32 #define __NR_setfsuid32 … #define __NR_setfsgid32 … #endif #ifndef __NR_getdents64 #define __NR_getdents64 … #endif #ifndef __NR_gettid #define __NR_gettid … #endif #ifndef __NR_readahead #define __NR_readahead … #endif #ifndef __NR_setxattr #define __NR_setxattr … #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr … #endif #ifndef __NR_getxattr #define __NR_getxattr … #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr … #endif #ifndef __NR_listxattr #define __NR_listxattr … #endif #ifndef __NR_llistxattr #define __NR_llistxattr … #endif #ifndef __NR_tkill #define __NR_tkill … #endif #ifndef __NR_futex #define __NR_futex … #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity … #define __NR_sched_getaffinity … #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address … #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime … #endif #ifndef __NR_clock_getres #define __NR_clock_getres … #endif #ifndef __NR_statfs64 #define __NR_statfs64 … #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 … #endif #ifndef __NR_fadvise64_64 #define __NR_fadvise64_64 … #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set … #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get … #endif #ifndef __NR_openat #define __NR_openat … #endif #ifndef __NR_fstatat64 #define __NR_fstatat64 … #endif #ifndef __NR_unlinkat #define __NR_unlinkat … #endif #ifndef __NR_move_pages #define __NR_move_pages … #endif #ifndef __NR_getcpu #define __NR_getcpu … #endif #ifndef __NR_fallocate #define __NR_fallocate … #endif #ifndef __NR_getrandom #define __NR_getrandom … #endif /* End of i386 definitions */ #elif defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) #ifndef __NR_setresuid #define __NR_setresuid … #define __NR_getresuid … #define __NR_setresgid … #define __NR_getresgid … #endif #ifndef __NR_rt_sigaction #define __NR_rt_sigreturn … #define __NR_rt_sigaction … #define __NR_rt_sigprocmask … #define __NR_rt_sigpending … #define __NR_rt_sigsuspend … #endif #ifndef __NR_pread64 #define __NR_pread64 … #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 … #endif #ifndef __NR_ugetrlimit #define __NR_ugetrlimit … #endif #ifndef __NR_stat64 #define __NR_stat64 … #endif #ifndef __NR_fstat64 #define __NR_fstat64 … #endif #ifndef __NR_setresuid32 #define __NR_setresuid32 … #define __NR_getresuid32 … #define __NR_setresgid32 … #define __NR_getresgid32 … #endif #ifndef __NR_setfsuid32 #define __NR_setfsuid32 … #define __NR_setfsgid32 … #endif #ifndef __NR_getdents64 #define __NR_getdents64 … #endif #ifndef __NR_gettid #define __NR_gettid … #endif #ifndef __NR_readahead #define __NR_readahead … #endif #ifndef __NR_setxattr #define __NR_setxattr … #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr … #endif #ifndef __NR_getxattr #define __NR_getxattr … #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr … #endif #ifndef __NR_listxattr #define __NR_listxattr … #endif #ifndef __NR_llistxattr #define __NR_llistxattr … #endif #ifndef __NR_tkill #define __NR_tkill … #endif #ifndef __NR_futex #define __NR_futex … #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity … #define __NR_sched_getaffinity … #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address … #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime … #endif #ifndef __NR_clock_getres #define __NR_clock_getres … #endif #ifndef __NR_statfs64 #define __NR_statfs64 … #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 … #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set … #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get … #endif #ifndef __NR_fstatat64 #define __NR_fstatat64 … #endif #ifndef __NR_move_pages #define __NR_move_pages … #endif #ifndef __NR_getcpu #define __NR_getcpu … #endif #ifndef __NR_getrandom #define __NR_getrandom … #endif /* End of ARM 3/EABI definitions */ #elif defined(__aarch64__) || defined(__riscv) || defined(__loongarch_lp64) #ifndef __NR_setxattr #define __NR_setxattr … #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr … #endif #ifndef __NR_getxattr #define __NR_getxattr … #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr … #endif #ifndef __NR_listxattr #define __NR_listxattr … #endif #ifndef __NR_llistxattr #define __NR_llistxattr … #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set … #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get … #endif #ifndef __NR_unlinkat #define __NR_unlinkat … #endif #ifndef __NR_fallocate #define __NR_fallocate … #endif #ifndef __NR_openat #define __NR_openat … #endif #ifndef __NR_quotactl #define __NR_quotactl … #endif #ifndef __NR_getdents64 #define __NR_getdents64 … #endif #ifndef __NR_getdents // when getdents is not available, getdents64 is used for both. #define __NR_getdents … #endif #ifndef __NR_pread64 #define __NR_pread64 … #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 … #endif #ifndef __NR_ppoll #define __NR_ppoll … #endif #ifndef __NR_readlinkat #define __NR_readlinkat … #endif #if !defined(__loongarch_lp64) #ifndef __NR_newfstatat #define __NR_newfstatat … #endif #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address … #endif #ifndef __NR_futex #define __NR_futex … #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime … #endif #ifndef __NR_clock_getres #define __NR_clock_getres … #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity … #define __NR_sched_getaffinity … #endif #ifndef __NR_tkill #define __NR_tkill … #endif #ifndef __NR_setresuid #define __NR_setresuid … #define __NR_getresuid … #define __NR_setresgid … #define __NR_getresgid … #endif #ifndef __NR_gettid #define __NR_gettid … #endif #ifndef __NR_readahead #define __NR_readahead … #endif #ifndef __NR_fadvise64 #define __NR_fadvise64 … #endif #ifndef __NR_move_pages #define __NR_move_pages … #endif #ifndef __NR_getrandom #define __NR_getrandom … #endif #ifndef __NR_statx #define __NR_statx … #endif #elif defined(__x86_64__) #ifndef __NR_pread64 #define __NR_pread64 … #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 … #endif #ifndef __NR_setresuid #define __NR_setresuid … #define __NR_getresuid … #define __NR_setresgid … #define __NR_getresgid … #endif #ifndef __NR_quotactl #define __NR_quotactl … #endif #ifndef __NR_gettid #define __NR_gettid … #endif #ifndef __NR_readahead #define __NR_readahead … #endif #ifndef __NR_setxattr #define __NR_setxattr … #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr … #endif #ifndef __NR_getxattr #define __NR_getxattr … #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr … #endif #ifndef __NR_listxattr #define __NR_listxattr … #endif #ifndef __NR_llistxattr #define __NR_llistxattr … #endif #ifndef __NR_tkill #define __NR_tkill … #endif #ifndef __NR_futex #define __NR_futex … #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity … #define __NR_sched_getaffinity … #endif #ifndef __NR_getdents64 #define __NR_getdents64 … #endif #ifndef __NR_getdents // when getdents is not available, getdents64 is used for both. #define __NR_getdents … #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address … #endif #ifndef __NR_fadvise64 #define __NR_fadvise64 … #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime … #endif #ifndef __NR_clock_getres #define __NR_clock_getres … #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set … #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get … #endif #ifndef __NR_openat #define __NR_openat … #endif #ifndef __NR_newfstatat #define __NR_newfstatat … #endif #ifndef __NR_unlinkat #define __NR_unlinkat … #endif #ifndef __NR_move_pages #define __NR_move_pages … #endif #ifndef __NR_fallocate #define __NR_fallocate … #endif #ifndef __NR_getrandom #define __NR_getrandom … #endif /* End of x86-64 definitions */ #elif defined(__mips__) #if _MIPS_SIM == _MIPS_SIM_ABI32 #ifndef __NR_setresuid #define __NR_setresuid … #define __NR_getresuid … #define __NR_setresgid … #define __NR_getresgid … #endif #ifndef __NR_rt_sigaction #define __NR_rt_sigreturn … #define __NR_rt_sigaction … #define __NR_rt_sigprocmask … #define __NR_rt_sigpending … #define __NR_rt_sigsuspend … #endif #ifndef __NR_pread64 #define __NR_pread64 … #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 … #endif #ifndef __NR_stat64 #define __NR_stat64 … #endif #ifndef __NR_fstat64 #define __NR_fstat64 … #endif #ifndef __NR_getdents64 #define __NR_getdents64 … #endif #ifndef __NR_gettid #define __NR_gettid … #endif #ifndef __NR_readahead #define __NR_readahead … #endif #ifndef __NR_setxattr #define __NR_setxattr … #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr … #endif #ifndef __NR_getxattr #define __NR_getxattr … #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr … #endif #ifndef __NR_listxattr #define __NR_listxattr … #endif #ifndef __NR_llistxattr #define __NR_llistxattr … #endif #ifndef __NR_tkill #define __NR_tkill … #endif #ifndef __NR_futex #define __NR_futex … #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity … #define __NR_sched_getaffinity … #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address … #endif #ifndef __NR_statfs64 #define __NR_statfs64 … #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 … #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime … #endif #ifndef __NR_clock_getres #define __NR_clock_getres … #endif #ifndef __NR_openat #define __NR_openat … #endif #ifndef __NR_fstatat #define __NR_fstatat … #endif #ifndef __NR_unlinkat #define __NR_unlinkat … #endif #ifndef __NR_move_pages #define __NR_move_pages … #endif #ifndef __NR_getcpu #define __NR_getcpu … #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set … #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get … #endif #ifndef __NR_getrandom #define __NR_getrandom … #endif /* End of MIPS (old 32bit API) definitions */ #elif _MIPS_SIM == _MIPS_SIM_ABI64 #ifndef __NR_pread64 #define __NR_pread64 … #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 … #endif #ifndef __NR_setresuid #define __NR_setresuid … #define __NR_getresuid … #define __NR_setresgid … #define __NR_getresgid … #endif #ifndef __NR_gettid #define __NR_gettid … #endif #ifndef __NR_readahead #define __NR_readahead … #endif #ifndef __NR_setxattr #define __NR_setxattr … #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr … #endif #ifndef __NR_getxattr #define __NR_getxattr … #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr … #endif #ifndef __NR_listxattr #define __NR_listxattr … #endif #ifndef __NR_llistxattr #define __NR_llistxattr … #endif #ifndef __NR_tkill #define __NR_tkill … #endif #ifndef __NR_futex #define __NR_futex … #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity … #define __NR_sched_getaffinity … #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address … #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime … #endif #ifndef __NR_clock_getres #define __NR_clock_getres … #endif #ifndef __NR_openat #define __NR_openat … #endif #ifndef __NR_fstatat #define __NR_fstatat … #endif #ifndef __NR_unlinkat #define __NR_unlinkat … #endif #ifndef __NR_move_pages #define __NR_move_pages … #endif #ifndef __NR_getcpu #define __NR_getcpu … #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set … #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get … #endif #ifndef __NR_getrandom #define __NR_getrandom … #endif /* End of MIPS (64bit API) definitions */ #else #ifndef __NR_setresuid #define __NR_setresuid … #define __NR_getresuid … #define __NR_setresgid … #define __NR_getresgid … #endif #ifndef __NR_gettid #define __NR_gettid … #endif #ifndef __NR_readahead #define __NR_readahead … #endif #ifndef __NR_setxattr #define __NR_setxattr … #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr … #endif #ifndef __NR_getxattr #define __NR_getxattr … #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr … #endif #ifndef __NR_listxattr #define __NR_listxattr … #endif #ifndef __NR_llistxattr #define __NR_llistxattr … #endif #ifndef __NR_tkill #define __NR_tkill … #endif #ifndef __NR_futex #define __NR_futex … #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity … #define __NR_sched_getaffinity … #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address … #endif #ifndef __NR_statfs64 #define __NR_statfs64 … #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 … #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime … #endif #ifndef __NR_clock_getres #define __NR_clock_getres … #endif #ifndef __NR_openat #define __NR_openat … #endif #ifndef __NR_fstatat #define __NR_fstatat … #endif #ifndef __NR_unlinkat #define __NR_unlinkat … #endif #ifndef __NR_move_pages #define __NR_move_pages … #endif #ifndef __NR_getcpu #define __NR_getcpu … #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set … #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get … #endif /* End of MIPS (new 32bit API) definitions */ #endif /* End of MIPS definitions */ #elif defined(__PPC__) #ifndef __NR_setfsuid #define __NR_setfsuid … #define __NR_setfsgid … #endif #ifndef __NR_setresuid #define __NR_setresuid … #define __NR_getresuid … #define __NR_setresgid … #define __NR_getresgid … #endif #ifndef __NR_rt_sigaction #define __NR_rt_sigreturn … #define __NR_rt_sigaction … #define __NR_rt_sigprocmask … #define __NR_rt_sigpending … #define __NR_rt_sigsuspend … #endif #ifndef __NR_pread64 #define __NR_pread64 … #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 … #endif #ifndef __NR_ugetrlimit #define __NR_ugetrlimit … #endif #ifndef __NR_readahead #define __NR_readahead … #endif #ifndef __NR_stat64 #define __NR_stat64 … #endif #ifndef __NR_fstat64 #define __NR_fstat64 … #endif #ifndef __NR_getdents64 #define __NR_getdents64 … #endif #ifndef __NR_gettid #define __NR_gettid … #endif #ifndef __NR_tkill #define __NR_tkill … #endif #ifndef __NR_setxattr #define __NR_setxattr … #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr … #endif #ifndef __NR_getxattr #define __NR_getxattr … #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr … #endif #ifndef __NR_listxattr #define __NR_listxattr … #endif #ifndef __NR_llistxattr #define __NR_llistxattr … #endif #ifndef __NR_futex #define __NR_futex … #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity … #define __NR_sched_getaffinity … #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address … #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime … #endif #ifndef __NR_clock_getres #define __NR_clock_getres … #endif #ifndef __NR_statfs64 #define __NR_statfs64 … #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 … #endif #ifndef __NR_fadvise64_64 #define __NR_fadvise64_64 … #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set … #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get … #endif #ifndef __NR_openat #define __NR_openat … #endif #ifndef __NR_fstatat64 #define __NR_fstatat64 … #endif #ifndef __NR_unlinkat #define __NR_unlinkat … #endif #ifndef __NR_move_pages #define __NR_move_pages … #endif #ifndef __NR_getcpu #define __NR_getcpu … #endif /* End of powerpc defininitions */ #elif defined(__s390__) #ifndef __NR_quotactl #define __NR_quotactl … #endif #ifndef __NR_rt_sigreturn #define __NR_rt_sigreturn … #endif #ifndef __NR_rt_sigaction #define __NR_rt_sigaction … #endif #ifndef __NR_rt_sigprocmask #define __NR_rt_sigprocmask … #endif #ifndef __NR_rt_sigpending #define __NR_rt_sigpending … #endif #ifndef __NR_rt_sigsuspend #define __NR_rt_sigsuspend … #endif #ifndef __NR_pread64 #define __NR_pread64 … #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 … #endif #ifndef __NR_getdents64 #define __NR_getdents64 … #endif #ifndef __NR_readahead #define __NR_readahead … #endif #ifndef __NR_setxattr #define __NR_setxattr … #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr … #endif #ifndef __NR_getxattr #define __NR_getxattr … #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr … #endif #ifndef __NR_listxattr #define __NR_listxattr … #endif #ifndef __NR_llistxattr #define __NR_llistxattr … #endif #ifndef __NR_gettid #define __NR_gettid … #endif #ifndef __NR_tkill #define __NR_tkill … #endif #ifndef __NR_futex #define __NR_futex … #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity … #endif #ifndef __NR_sched_getaffinity #define __NR_sched_getaffinity … #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address … #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime … #endif #ifndef __NR_clock_getres #define __NR_clock_getres … #endif #ifndef __NR_statfs64 #define __NR_statfs64 … #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 … #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set … #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get … #endif #ifndef __NR_openat #define __NR_openat … #endif #ifndef __NR_unlinkat #define __NR_unlinkat … #endif #ifndef __NR_move_pages #define __NR_move_pages … #endif #ifndef __NR_getcpu #define __NR_getcpu … #endif #ifndef __NR_fallocate #define __NR_fallocate … #endif /* Some syscalls are named/numbered differently between s390 and s390x. */ #ifdef __s390x__ # ifndef __NR_getrlimit #define __NR_getrlimit … # endif # ifndef __NR_setresuid #define __NR_setresuid … # endif # ifndef __NR_getresuid #define __NR_getresuid … # endif # ifndef __NR_setresgid #define __NR_setresgid … # endif # ifndef __NR_getresgid #define __NR_getresgid … # endif # ifndef __NR_setfsuid #define __NR_setfsuid … # endif # ifndef __NR_setfsgid #define __NR_setfsgid … # endif # ifndef __NR_fadvise64 #define __NR_fadvise64 … # endif # ifndef __NR_newfstatat #define __NR_newfstatat … # endif #else /* __s390x__ */ # ifndef __NR_getrlimit #define __NR_getrlimit … # endif # ifndef __NR_setfsuid #define __NR_setfsuid … # endif # ifndef __NR_setfsgid #define __NR_setfsgid … # endif # ifndef __NR_setresuid #define __NR_setresuid … # endif # ifndef __NR_getresuid #define __NR_getresuid … # endif # ifndef __NR_setresgid #define __NR_setresgid … # endif # ifndef __NR_getresgid #define __NR_getresgid … # endif # ifndef __NR_ugetrlimit #define __NR_ugetrlimit … # endif # ifndef __NR_mmap2 #define __NR_mmap2 … # endif # ifndef __NR_setresuid32 #define __NR_setresuid32 … # endif # ifndef __NR_getresuid32 #define __NR_getresuid32 … # endif # ifndef __NR_setresgid32 #define __NR_setresgid32 … # endif # ifndef __NR_getresgid32 #define __NR_getresgid32 … # endif # ifndef __NR_setfsuid32 #define __NR_setfsuid32 … # endif # ifndef __NR_setfsgid32 #define __NR_setfsgid32 … # endif # ifndef __NR_fadvise64_64 #define __NR_fadvise64_64 … # endif # ifndef __NR_fstatat64 #define __NR_fstatat64 … # endif #endif /* __s390__ */ /* End of s390/s390x definitions */ #endif /* After forking, we must make sure to only call system calls. */ #if defined(__BOUNDED_POINTERS__) #error "Need to port invocations of syscalls for bounded ptrs" #else /* The core dumper and the thread lister get executed after threads * have been suspended. As a consequence, we cannot call any functions * that acquire locks. Unfortunately, libc wraps most system calls * (e.g. in order to implement pthread_atfork, and to make calls * cancellable), which means we cannot call these functions. Instead, * we have to call syscall() directly. */ #undef LSS_ERRNO #ifdef SYS_ERRNO /* Allow the including file to override the location of errno. This can * be useful when using clone() with the CLONE_VM option. */ #define LSS_ERRNO … #else #define LSS_ERRNO … #endif #undef LSS_INLINE #ifdef SYS_INLINE #define LSS_INLINE … #else #define LSS_INLINE … #endif /* Allow the including file to override the prefix used for all new * system calls. By default, it will be set to "sys_". */ #undef LSS_NAME #ifndef SYS_PREFIX #define LSS_NAME(name) … #elif defined(SYS_PREFIX) && SYS_PREFIX < 0 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 0 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 1 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 2 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 3 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 4 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 5 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 6 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 7 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 8 #define LSS_NAME … #elif defined(SYS_PREFIX) && SYS_PREFIX == 9 #define LSS_NAME … #endif #undef LSS_RETURN #if defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) \ || defined(__ARM_EABI__) || defined(__aarch64__) || defined(__s390__) \ || defined(__e2k__) || defined(__riscv) || defined(__loongarch_lp64) /* Failing system calls return a negative result in the range of * -1..-4095. These are "errno" values with the sign inverted. */ #define LSS_RETURN(type, res) … #elif defined(__mips__) /* On MIPS, failing system calls return -1, and set errno in a * separate CPU register. */ #define LSS_RETURN … #elif defined(__PPC__) /* On PPC, failing system calls return -1, and set errno in a * separate CPU register. See linux/unistd.h. */ #define LSS_RETURN … #endif #if defined(__i386__) /* In PIC mode (e.g. when building shared libraries), gcc for i386 * reserves ebx. Unfortunately, most distribution ship with implementations * of _syscallX() which clobber ebx. * Also, most definitions of _syscallX() neglect to mark "memory" as being * clobbered. This causes problems with compilers, that do a better job * at optimizing across __asm__ calls. * So, we just have to redefine all of the _syscallX() macros. */ #undef LSS_ENTRYPOINT #ifdef SYS_SYSCALL_ENTRYPOINT static inline void (**LSS_NAME(get_syscall_entrypoint)(void))(void) { void (**entrypoint)(void); asm volatile(".bss\n" ".align 8\n" ".globl " SYS_SYSCALL_ENTRYPOINT "\n" ".common " SYS_SYSCALL_ENTRYPOINT ",8,8\n" ".previous\n" /* This logically does 'lea "SYS_SYSCALL_ENTRYPOINT", %0' */ "call 0f\n" "0:pop %0\n" "add $_GLOBAL_OFFSET_TABLE_+[.-0b], %0\n" "mov " SYS_SYSCALL_ENTRYPOINT "@GOT(%0), %0\n" : "=r"(entrypoint)); return entrypoint; } #define LSS_ENTRYPOINT … #else #define LSS_ENTRYPOINT … #endif #undef LSS_BODY #define LSS_BODY … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #define _syscall5 … #undef _syscall6 #define _syscall6 … LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { long __res; __asm__ __volatile__(/* if (fn == NULL) * return -EINVAL; */ "movl %3,%%ecx\n" "jecxz 1f\n" /* if (child_stack == NULL) * return -EINVAL; */ "movl %4,%%ecx\n" "jecxz 1f\n" /* Set up alignment of the child stack: * child_stack = (child_stack & ~0xF) - 20; */ "andl $-16,%%ecx\n" "subl $20,%%ecx\n" /* Push "arg" and "fn" onto the stack that will be * used by the child. */ "movl %6,%%eax\n" "movl %%eax,4(%%ecx)\n" "movl %3,%%eax\n" "movl %%eax,(%%ecx)\n" /* %eax = syscall(%eax = __NR_clone, * %ebx = flags, * %ecx = child_stack, * %edx = parent_tidptr, * %esi = newtls, * %edi = child_tidptr) * Also, make sure that %ebx gets preserved as it is * used in PIC mode. */ "movl %8,%%esi\n" "movl %7,%%edx\n" "movl %5,%%eax\n" "movl %9,%%edi\n" "pushl %%ebx\n" "movl %%eax,%%ebx\n" "movl %2,%%eax\n" LSS_ENTRYPOINT /* In the parent: restore %ebx * In the child: move "fn" into %ebx */ "popl %%ebx\n" /* if (%eax != 0) * return %eax; */ "test %%eax,%%eax\n" "jnz 1f\n" /* In the child, now. Terminate frame pointer chain. */ "movl $0,%%ebp\n" /* Call "fn". "arg" is already on the stack. */ "call *%%ebx\n" /* Call _exit(%ebx). Unfortunately older versions * of gcc restrict the number of arguments that can * be passed to asm(). So, we need to hard-code the * system call number. */ "movl %%eax,%%ebx\n" "movl $1,%%eax\n" LSS_ENTRYPOINT /* Return to parent. */ "1:\n" : "=a" (__res) : "0"(-EINVAL), "i"(__NR_clone), "m"(fn), "m"(child_stack), "m"(flags), "m"(arg), "m"(parent_tidptr), "m"(newtls), "m"(child_tidptr) : "memory", "ecx", "edx", "esi", "edi"); LSS_RETURN(int, __res); } LSS_INLINE _syscall1(int, set_thread_area, void *, u) LSS_INLINE _syscall1(int, get_thread_area, void *, u) LSS_INLINE void (*LSS_NAME(restore_rt)(void))(void) { /* On i386, the kernel does not know how to return from a signal * handler. Instead, it relies on user space to provide a * restorer function that calls the {rt_,}sigreturn() system call. * Unfortunately, we cannot just reference the glibc version of this * function, as glibc goes out of its way to make it inaccessible. */ void (*res)(void); __asm__ __volatile__("call 2f\n" "0:.align 16\n" "1:movl %1,%%eax\n" LSS_ENTRYPOINT "2:popl %0\n" "addl $(1b-0b),%0\n" : "=a" (res) : "i" (__NR_rt_sigreturn)); return res; } LSS_INLINE void (*LSS_NAME(restore)(void))(void) { /* On i386, the kernel does not know how to return from a signal * handler. Instead, it relies on user space to provide a * restorer function that calls the {rt_,}sigreturn() system call. * Unfortunately, we cannot just reference the glibc version of this * function, as glibc goes out of its way to make it inaccessible. */ void (*res)(void); __asm__ __volatile__("call 2f\n" "0:.align 16\n" "1:pop %%eax\n" "movl %1,%%eax\n" LSS_ENTRYPOINT "2:popl %0\n" "addl $(1b-0b),%0\n" : "=a" (res) : "i" (__NR_sigreturn)); return res; } #elif defined(__x86_64__) /* There are no known problems with any of the _syscallX() macros * currently shipping for x86_64, but we still need to be able to define * our own version so that we can override the location of the errno * location (e.g. when using the clone() system call with the CLONE_VM * option). */ #undef LSS_ENTRYPOINT #ifdef SYS_SYSCALL_ENTRYPOINT static inline void (**LSS_NAME(get_syscall_entrypoint)(void))(void) { void (**entrypoint)(void); asm volatile(".bss\n" ".align 8\n" ".globl " SYS_SYSCALL_ENTRYPOINT "\n" ".common " SYS_SYSCALL_ENTRYPOINT ",8,8\n" ".previous\n" "mov " SYS_SYSCALL_ENTRYPOINT "@GOTPCREL(%%rip), %0\n" : "=r"(entrypoint)); return entrypoint; } #define LSS_ENTRYPOINT … #else #define LSS_ENTRYPOINT … #endif /* The x32 ABI has 32 bit longs, but the syscall interface is 64 bit. * We need to explicitly cast to an unsigned 64 bit type to avoid implicit * sign extension. We can't cast pointers directly because those are * 32 bits, and gcc will dump ugly warnings about casting from a pointer * to an integer of a different size. */ #undef LSS_SYSCALL_ARG #define LSS_SYSCALL_ARG(a) … #undef _LSS_RETURN #define _LSS_RETURN(type, res, cast) … #undef LSS_RETURN #define LSS_RETURN(type, res) … #undef _LSS_BODY #define _LSS_BODY(nr, type, name, cast, ...) … #undef LSS_BODY #define LSS_BODY(nr, type, name, args...) … #undef LSS_BODY_ASM0 #undef LSS_BODY_ASM1 #undef LSS_BODY_ASM2 #undef LSS_BODY_ASM3 #undef LSS_BODY_ASM4 #undef LSS_BODY_ASM5 #undef LSS_BODY_ASM6 #define LSS_BODY_ASM0 #define LSS_BODY_ASM1 … #define LSS_BODY_ASM2 … #define LSS_BODY_ASM3 … #define LSS_BODY_ASM4 … #define LSS_BODY_ASM5 … #define LSS_BODY_ASM6 … #undef LSS_BODY_CLOBBER0 #undef LSS_BODY_CLOBBER1 #undef LSS_BODY_CLOBBER2 #undef LSS_BODY_CLOBBER3 #undef LSS_BODY_CLOBBER4 #undef LSS_BODY_CLOBBER5 #undef LSS_BODY_CLOBBER6 #define LSS_BODY_CLOBBER0 #define LSS_BODY_CLOBBER1 … #define LSS_BODY_CLOBBER2 … #define LSS_BODY_CLOBBER3 … #define LSS_BODY_CLOBBER4 … #define LSS_BODY_CLOBBER5 … #define LSS_BODY_CLOBBER6 … #undef LSS_BODY_ARG0 #undef LSS_BODY_ARG1 #undef LSS_BODY_ARG2 #undef LSS_BODY_ARG3 #undef LSS_BODY_ARG4 #undef LSS_BODY_ARG5 #undef LSS_BODY_ARG6 #define LSS_BODY_ARG0() … #define LSS_BODY_ARG1(arg1) … #define LSS_BODY_ARG2(arg1, arg2) … #define LSS_BODY_ARG3(arg1, arg2, arg3) … #define LSS_BODY_ARG4(arg1, arg2, arg3, arg4) … #define LSS_BODY_ARG5(arg1, arg2, arg3, arg4, arg5) … #define LSS_BODY_ARG6(arg1, arg2, arg3, arg4, arg5, arg6) … #undef _syscall0 #define _syscall0(type,name) … #undef _syscall1 #define _syscall1(type,name,type1,arg1) … #undef _syscall2 #define _syscall2(type,name,type1,arg1,type2,arg2) … #undef _syscall3 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) … #undef _syscall4 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) … #undef _syscall5 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5) … #undef _syscall6 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5,type6,arg6) … LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { … } LSS_INLINE _syscall2(int, arch_prctl, int, c, void *, a) LSS_INLINE void (*LSS_NAME(restore_rt)(void))(void) { … } #elif defined(__ARM_ARCH_3__) /* Most definitions of _syscallX() neglect to mark "memory" as being * clobbered. This causes problems with compilers, that do a better job * at optimizing across __asm__ calls. * So, we just have to redefine all of the _syscallX() macros. */ #undef LSS_REG #define LSS_REG … #undef LSS_BODY #define LSS_BODY … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #define _syscall5 … #undef _syscall6 #define _syscall6 … LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { long __res; { register int __flags __asm__("r0") = flags; register void *__stack __asm__("r1") = child_stack; register void *__ptid __asm__("r2") = parent_tidptr; register void *__tls __asm__("r3") = newtls; register int *__ctid __asm__("r4") = child_tidptr; __asm__ __volatile__(/* if (fn == NULL || child_stack == NULL) * return -EINVAL; */ "cmp %2,#0\n" "cmpne %3,#0\n" "moveq %0,%1\n" "beq 1f\n" /* Push "arg" and "fn" onto the stack that will be * used by the child. */ "str %5,[%3,#-4]!\n" "str %2,[%3,#-4]!\n" /* %r0 = syscall(%r0 = flags, * %r1 = child_stack, * %r2 = parent_tidptr, * %r3 = newtls, * %r4 = child_tidptr) */ __syscall(clone)"\n" /* if (%r0 != 0) * return %r0; */ "movs %0,r0\n" "bne 1f\n" /* In the child, now. Call "fn(arg)". */ "ldr r0,[sp, #4]\n" "mov lr,pc\n" "ldr pc,[sp]\n" /* Call _exit(%r0). */ __syscall(exit)"\n" "1:\n" : "=r" (__res) : "i"(-EINVAL), "r"(fn), "r"(__stack), "r"(__flags), "r"(arg), "r"(__ptid), "r"(__tls), "r"(__ctid) : "cc", "lr", "memory"); } LSS_RETURN(int, __res); } #elif defined(__ARM_EABI__) /* Most definitions of _syscallX() neglect to mark "memory" as being * clobbered. This causes problems with compilers, that do a better job * at optimizing across __asm__ calls. * So, we just have to redefine all fo the _syscallX() macros. */ #undef LSS_REG #define LSS_REG … #undef LSS_BODY #define LSS_BODY … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #define _syscall5 … #undef _syscall6 #define _syscall6 … LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { long __res; if (fn == NULL || child_stack == NULL) { __res = -EINVAL; LSS_RETURN(int, __res); } /* Push "arg" and "fn" onto the stack that will be * used by the child. */ { uintptr_t* cstack = (uintptr_t*)child_stack - 2; cstack[0] = (uintptr_t)fn; cstack[1] = (uintptr_t)arg; child_stack = cstack; } { register int __flags __asm__("r0") = flags; register void *__stack __asm__("r1") = child_stack; register void *__ptid __asm__("r2") = parent_tidptr; register void *__tls __asm__("r3") = newtls; register int *__ctid __asm__("r4") = child_tidptr; __asm__ __volatile__( #ifdef __thumb2__ "push {r7}\n" #endif /* %r0 = syscall(%r0 = flags, * %r1 = child_stack, * %r2 = parent_tidptr, * %r3 = newtls, * %r4 = child_tidptr) */ "mov r7, %6\n" "swi 0x0\n" /* if (%r0 != 0) * return %r0; */ "cmp r0, #0\n" "bne 1f\n" /* In the child, now. Call "fn(arg)". */ "ldr r0,[sp, #4]\n" "ldr lr,[sp]\n" "blx lr\n" /* Call _exit(%r0). */ "mov r7, %7\n" "swi 0x0\n" /* Unreachable */ "bkpt #0\n" "1:\n" #ifdef __thumb2__ "pop {r7}\n" #endif "movs %0,r0\n" : "=r"(__res) : "r"(__stack), "r"(__flags), "r"(__ptid), "r"(__tls), "r"(__ctid), "i"(__NR_clone), "i"(__NR_exit) : "cc", "lr", "memory" #ifndef __thumb2__ , "r7" #endif ); } LSS_RETURN(int, __res); } #elif defined(__aarch64__) /* Most definitions of _syscallX() neglect to mark "memory" as being * clobbered. This causes problems with compilers, that do a better job * at optimizing across __asm__ calls. * So, we just have to redefine all of the _syscallX() macros. */ #undef LSS_REG #define LSS_REG … #undef LSS_BODY #define LSS_BODY … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #define _syscall5 … #undef _syscall6 #define _syscall6 … LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { int64_t __res; { register uint64_t __flags __asm__("x0") = (uint64_t)flags; register void *__stack __asm__("x1") = child_stack; register void *__ptid __asm__("x2") = parent_tidptr; register void *__tls __asm__("x3") = newtls; register int *__ctid __asm__("x4") = child_tidptr; __asm__ __volatile__(/* Push "arg" and "fn" onto the stack that will be * used by the child. */ "stp %1, %4, [%2, #-16]!\n" /* %x0 = syscall(%x0 = flags, * %x1 = child_stack, * %x2 = parent_tidptr, * %x3 = newtls, * %x4 = child_tidptr) */ "mov x8, %8\n" "svc 0x0\n" /* if (%r0 != 0) * return %r0; */ "mov %0, x0\n" "cbnz x0, 1f\n" /* In the child, now. Call "fn(arg)". */ "ldp x1, x0, [sp], #16\n" "blr x1\n" /* Call _exit(%r0). */ "mov x8, %9\n" "svc 0x0\n" "1:\n" : "=r" (__res) : "r"(fn), "r"(__stack), "r"(__flags), "r"(arg), "r"(__ptid), "r"(__tls), "r"(__ctid), "i"(__NR_clone), "i"(__NR_exit) : "cc", "x8", "memory"); } LSS_RETURN(int, __res); } #elif defined(__mips__) #undef LSS_REG #define LSS_REG … #undef LSS_BODY #undef LSS_SYSCALL_CLOBBERS #if _MIPS_SIM == _MIPS_SIM_ABI32 #define LSS_SYSCALL_CLOBBERS … #else #define LSS_SYSCALL_CLOBBERS … #endif #define LSS_BODY … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #if _MIPS_SIM == _MIPS_SIM_ABI32 /* The old 32bit MIPS system call API passes the fifth and sixth argument * on the stack, whereas the new APIs use registers "r8" and "r9". */ #define _syscall5 … #else #define _syscall5 … #endif #undef _syscall6 #if _MIPS_SIM == _MIPS_SIM_ABI32 /* The old 32bit MIPS system call API passes the fifth and sixth argument * on the stack, whereas the new APIs use registers "r8" and "r9". */ #define _syscall6 … #else #define _syscall6 … #endif LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { register unsigned long __v0 __asm__("$2") = -EINVAL; register unsigned long __r7 __asm__("$7") = (unsigned long)newtls; { register int __flags __asm__("$4") = flags; register void *__stack __asm__("$5") = child_stack; register void *__ptid __asm__("$6") = parent_tidptr; register int *__ctid __asm__("$8") = child_tidptr; __asm__ __volatile__( #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32 "subu $29,24\n" #elif _MIPS_SIM == _MIPS_SIM_NABI32 "sub $29,16\n" #else "dsubu $29,16\n" #endif /* if (fn == NULL || child_stack == NULL) * return -EINVAL; */ "beqz %4,1f\n" "beqz %5,1f\n" /* Push "arg" and "fn" onto the stack that will be * used by the child. */ #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32 "subu %5,32\n" "sw %4,0(%5)\n" "sw %7,4(%5)\n" #elif _MIPS_SIM == _MIPS_SIM_NABI32 "sub %5,32\n" "sw %4,0(%5)\n" "sw %7,8(%5)\n" #else "dsubu %5,32\n" "sd %4,0(%5)\n" "sd %7,8(%5)\n" #endif /* $7 = syscall($4 = flags, * $5 = child_stack, * $6 = parent_tidptr, * $7 = newtls, * $8 = child_tidptr) */ "li $2,%2\n" "syscall\n" /* if ($7 != 0) * return $2; */ "bnez $7,1f\n" "bnez $2,1f\n" /* In the child, now. Call "fn(arg)". */ #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32 "lw $25,0($29)\n" "lw $4,4($29)\n" #elif _MIPS_SIM == _MIPS_SIM_NABI32 "lw $25,0($29)\n" "lw $4,8($29)\n" #else "ld $25,0($29)\n" "ld $4,8($29)\n" #endif "jalr $25\n" /* Call _exit($2) */ "move $4,$2\n" "li $2,%3\n" "syscall\n" "1:\n" #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32 "addu $29, 24\n" #elif _MIPS_SIM == _MIPS_SIM_NABI32 "add $29, 16\n" #else "daddu $29,16\n" #endif : "+r" (__v0), "+r" (__r7) : "i"(__NR_clone), "i"(__NR_exit), "r"(fn), "r"(__stack), "r"(__flags), "r"(arg), "r"(__ptid), "r"(__ctid) : "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25", "memory"); } LSS_RETURN(int, __v0, __r7); } #elif defined (__PPC__) #undef LSS_LOADARGS_0 #define LSS_LOADARGS_0 … #undef LSS_LOADARGS_1 #define LSS_LOADARGS_1 … #undef LSS_LOADARGS_2 #define LSS_LOADARGS_2 … #undef LSS_LOADARGS_3 #define LSS_LOADARGS_3 … #undef LSS_LOADARGS_4 #define LSS_LOADARGS_4 … #undef LSS_LOADARGS_5 #define LSS_LOADARGS_5 … #undef LSS_LOADARGS_6 #define LSS_LOADARGS_6 … #undef LSS_ASMINPUT_0 #define LSS_ASMINPUT_0 … #undef LSS_ASMINPUT_1 #define LSS_ASMINPUT_1 … #undef LSS_ASMINPUT_2 #define LSS_ASMINPUT_2 … #undef LSS_ASMINPUT_3 #define LSS_ASMINPUT_3 … #undef LSS_ASMINPUT_4 #define LSS_ASMINPUT_4 … #undef LSS_ASMINPUT_5 #define LSS_ASMINPUT_5 … #undef LSS_ASMINPUT_6 #define LSS_ASMINPUT_6 … #undef LSS_BODY #define LSS_BODY … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #define _syscall5 … #undef _syscall6 #define _syscall6 … /* clone function adapted from glibc 2.3.6 clone.S */ /* TODO(csilvers): consider wrapping some args up in a struct, like we * do for i386's _syscall6, so we can compile successfully on gcc 2.95 */ LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { long __ret, __err; { register int (*__fn)(void *) __asm__ ("r8") = fn; register void *__cstack __asm__ ("r4") = child_stack; register int __flags __asm__ ("r3") = flags; register void * __arg __asm__ ("r9") = arg; register int * __ptidptr __asm__ ("r5") = parent_tidptr; register void * __newtls __asm__ ("r6") = newtls; register int * __ctidptr __asm__ ("r7") = child_tidptr; __asm__ __volatile__( /* check for fn == NULL * and child_stack == NULL */ "cmpwi cr0, %6, 0\n\t" "cmpwi cr1, %7, 0\n\t" "cror cr0*4+eq, cr1*4+eq, cr0*4+eq\n\t" "beq- cr0, 1f\n\t" /* set up stack frame for child */ "clrrwi %7, %7, 4\n\t" "li 0, 0\n\t" "stwu 0, -16(%7)\n\t" /* fn, arg, child_stack are saved across the syscall: r28-30 */ "mr 28, %6\n\t" "mr 29, %7\n\t" "mr 27, %9\n\t" /* syscall */ "li 0, %4\n\t" /* flags already in r3 * child_stack already in r4 * ptidptr already in r5 * newtls already in r6 * ctidptr already in r7 */ "sc\n\t" /* Test if syscall was successful */ "cmpwi cr1, 3, 0\n\t" "crandc cr1*4+eq, cr1*4+eq, cr0*4+so\n\t" "bne- cr1, 1f\n\t" /* Do the function call */ "mtctr 28\n\t" "mr 3, 27\n\t" "bctrl\n\t" /* Call _exit(r3) */ "li 0, %5\n\t" "sc\n\t" /* Return to parent */ "1:\n" "mfcr %1\n\t" "mr %0, 3\n\t" : "=r" (__ret), "=r" (__err) : "0" (-1), "1" (EINVAL), "i" (__NR_clone), "i" (__NR_exit), "r" (__fn), "r" (__cstack), "r" (__flags), "r" (__arg), "r" (__ptidptr), "r" (__newtls), "r" (__ctidptr) : "cr0", "cr1", "memory", "ctr", "r0", "r29", "r27", "r28"); } LSS_RETURN(int, __ret, __err); } #elif defined(__s390__) #undef LSS_REG #define LSS_REG … #undef LSS_BODY #define LSS_BODY … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #define _syscall5 … #undef _syscall6 #define _syscall6 … LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { long __ret; { register int (*__fn)(void *) __asm__ ("r1") = fn; register void *__cstack __asm__ ("r2") = child_stack; register int __flags __asm__ ("r3") = flags; register void *__arg __asm__ ("r0") = arg; register int *__ptidptr __asm__ ("r4") = parent_tidptr; register void *__newtls __asm__ ("r6") = newtls; register int *__ctidptr __asm__ ("r5") = child_tidptr; __asm__ __volatile__ ( #ifndef __s390x__ /* arg already in r0 */ "ltr %4, %4\n\t" /* check fn, which is already in r1 */ "jz 1f\n\t" /* NULL function pointer, return -EINVAL */ "ltr %5, %5\n\t" /* check child_stack, which is already in r2 */ "jz 1f\n\t" /* NULL stack pointer, return -EINVAL */ /* flags already in r3 */ /* parent_tidptr already in r4 */ /* child_tidptr already in r5 */ /* newtls already in r6 */ "svc %2\n\t" /* invoke clone syscall */ "ltr %0,%%r2\n\t" /* load return code into __ret and test */ "jnz 1f\n\t" /* return to parent if non-zero */ /* start child thread */ "lr %%r2, %7\n\t" /* set first parameter to void *arg */ "ahi %%r15, -96\n\t" /* make room on the stack for the save area */ "xc 0(4,%%r15), 0(%%r15)\n\t" "basr %%r14, %4\n\t" /* jump to fn */ "svc %3\n" /* invoke exit syscall */ "1:\n" #else /* arg already in r0 */ "ltgr %4, %4\n\t" /* check fn, which is already in r1 */ "jz 1f\n\t" /* NULL function pointer, return -EINVAL */ "ltgr %5, %5\n\t" /* check child_stack, which is already in r2 */ "jz 1f\n\t" /* NULL stack pointer, return -EINVAL */ /* flags already in r3 */ /* parent_tidptr already in r4 */ /* child_tidptr already in r5 */ /* newtls already in r6 */ "svc %2\n\t" /* invoke clone syscall */ "ltgr %0, %%r2\n\t" /* load return code into __ret and test */ "jnz 1f\n\t" /* return to parent if non-zero */ /* start child thread */ "lgr %%r2, %7\n\t" /* set first parameter to void *arg */ "aghi %%r15, -160\n\t" /* make room on the stack for the save area */ "xc 0(8,%%r15), 0(%%r15)\n\t" "basr %%r14, %4\n\t" /* jump to fn */ "svc %3\n" /* invoke exit syscall */ "1:\n" #endif : "=r" (__ret) : "0" (-EINVAL), "i" (__NR_clone), "i" (__NR_exit), "d" (__fn), "d" (__cstack), "d" (__flags), "d" (__arg), "d" (__ptidptr), "d" (__newtls), "d" (__ctidptr) : "cc", "r14", "memory" ); } LSS_RETURN(int, __ret); } #elif defined(__riscv) && __riscv_xlen == 64 #undef LSS_REG #define LSS_REG … #undef LSS_BODY #define LSS_BODY … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #define _syscall5 … #undef _syscall6 #define _syscall6 … LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { int64_t __res; { register int64_t __res_a0 __asm__("a0"); register uint64_t __flags __asm__("a0") = flags; register void *__stack __asm__("a1") = child_stack; register void *__ptid __asm__("a2") = parent_tidptr; register void *__tls __asm__("a3") = newtls; register int *__ctid __asm__("a4") = child_tidptr; __asm__ __volatile__(/* Push "arg" and "fn" onto the stack that will be * used by the child. */ "addi %2,%2,-16\n" "sd %1, 0(%2)\n" "sd %4, 8(%2)\n" /* %a0 = syscall(%a0 = flags, * %a1 = child_stack, * %a2 = parent_tidptr, * %a3 = newtls, * %a4 = child_tidptr) */ "li a7, %8\n" "scall\n" /* if (%a0 != 0) * return %a0; */ "bnez %0, 1f\n" /* In the child, now. Call "fn(arg)". */ "ld a1, 0(sp)\n" "ld a0, 8(sp)\n" "jalr a1\n" /* Call _exit(%a0). */ "li a7, %9\n" "scall\n" "1:\n" : "=r" (__res_a0) : "r"(fn), "r"(__stack), "r"(__flags), "r"(arg), "r"(__ptid), "r"(__tls), "r"(__ctid), "i"(__NR_clone), "i"(__NR_exit) : "cc", "memory"); __res = __res_a0; } LSS_RETURN(int, __res); } #elif defined(__e2k__) #undef _LSS_BODY #define _LSS_BODY … #undef LSS_BODY #define LSS_BODY … #undef LSS_BODY_ASM0 #undef LSS_BODY_ASM1 #undef LSS_BODY_ASM2 #undef LSS_BODY_ASM3 #undef LSS_BODY_ASM4 #undef LSS_BODY_ASM5 #undef LSS_BODY_ASM6 #define LSS_BODY_ASM0 #define LSS_BODY_ASM1 … #define LSS_BODY_ASM2 … #define LSS_BODY_ASM3 … #define LSS_BODY_ASM4 … #define LSS_BODY_ASM5 … #define LSS_BODY_ASM6 … #undef LSS_SYSCALL_ARG #define LSS_SYSCALL_ARG … #undef LSS_BODY_ARG0 #undef LSS_BODY_ARG1 #undef LSS_BODY_ARG2 #undef LSS_BODY_ARG3 #undef LSS_BODY_ARG4 #undef LSS_BODY_ARG5 #undef LSS_BODY_ARG6 #define LSS_BODY_ARG0 … #define LSS_BODY_ARG1 … #define LSS_BODY_ARG2 … #define LSS_BODY_ARG3 … #define LSS_BODY_ARG4 … #define LSS_BODY_ARG5 … #define LSS_BODY_ARG6 … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #define _syscall5 … #undef _syscall6 #define _syscall6 … LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { unsigned long long __res; __asm__ __volatile__ ( "{\n\t" " addd,s 0x0, %[nr_clone], %%b[0]\n\t" " addd,s 0x0, %[flags], %%db[1]\n\t" " addd,s 0x0, %[child_stack], %%db[2]\n\t" " addd,s 0x0, %[parent_tidptr], %%db[3]\n\t" " addd,s 0x0, %[child_tidptr], %%db[4]\n\t" " addd,s 0x0, %[newtls], %%db[5]\n\t" "}\n\t" /* if (fn == NULL) * return -EINVAL; */ "{\n\t" " disp %%ctpr1, .L1\n\t" "}\n\t" "{\n\t" " cmpesb,s 0x0, %[fn], %%pred0\n\t" "}\n\t" "{\n\t" " ct %%ctpr1 ? %%pred0\n\t" "}\n\t" /* if (child_stack == NULL) * return -EINVAL; */ "{\n\t" " cmpesb,s 0x0, %%db[2], %%pred0\n\t" "}\n\t" "{\n\t" " ct %%ctpr1 ? %%pred0\n\t" "}\n\t" /* b[0] = syscall(%b[0] = __NR_clone, * %db[1] = flags, * %db[2] = child_stack, * %db[3] = parent_tidptr, * %db[4] = child_tidptr, * %db[5] = newtls) */ "{\n\t" " sdisp %%ctpr1, 0x3\n\t" "}\n\t" "{\n\t" " call %%ctpr1, wbs = %#\n\t" "}\n\t" /* if (%[b0] != 0) * return %b[0]; */ "{\n\t" " disp %%ctpr1, .L2\n\t" " cmpesb,s 0x0, %%b[0], %%pred0\n\t" "}\n\t" "{\n\t" " ct %%ctpr1 ? ~%%pred0\n\t" "}\n\t" /* In the child, now. Call "fn(arg)". */ "{\n\t" " movtd,s %[fn], %%ctpr1\n\t" "}\n\t" "{\n\t" " addd,s 0x0, %[arg], %%db[0]\n\t" "}\n\t" "{\n\t" " call %%ctpr1, wbs = %#\n\t" "}\n\t" /* Call _exit(%b[0]). */ "{\n\t" " sdisp %%ctpr1, 0x3\n\t" " addd,s 0x0, %%b[0], %%b[1]\n\t" "}\n\t" "{\n\t" " addd,s 0x0, %[nr_exit], %%b[0]\n\t" "}\n\t" "{\n\t" " call %%ctpr1, wbs = %#\n\t" "}\n\t" "{\n\t" " disp %%ctpr1, .L2\n\t" " adds,s 0x0, 0x0, %%b[0]\n\t" "}\n\t" "{\n\t" " ct %%ctpr1\n\t" "}\n\t" ".L1:\n\t" "{\n\t" " addd,s 0x0, %[einval], %%b[0]\n\t" "}\n\t" ".L2:\n\t" "{\n\t" " addd,s 0x0, %%b[0], %[res]\n\t" "}\n\t" : [res] "=r" LSS_SYSCALL_ARG(__res) : [nr_clone] "ri" LSS_SYSCALL_ARG(__NR_clone) [arg] "ri" LSS_SYSCALL_ARG(arg) [nr_exit] "ri" LSS_SYSCALL_ARG(__NR_exit) [flags] "ri" LSS_SYSCALL_ARG(flags) [child_stack] "ri" LSS_SYSCALL_ARG(child_stack) [parent_tidptr] "ri" LSS_SYSCALL_ARG(parent_tidptr) [newtls] "ri" LSS_SYSCALL_ARG(newtls) [child_tidptr] "ri" LSS_SYSCALL_ARG(child_tidptr) [fn] "ri" LSS_SYSCALL_ARG(fn) [einval] "ri" LSS_SYSCALL_ARG(-EINVAL) : "ctpr1", "b[0]", "b[1]", "b[2]", "b[3]", "b[4]", "b[5]", "pred0"); LSS_RETURN(int, __res); } #elif defined(__loongarch_lp64) /* Most definitions of _syscallX() neglect to mark "memory" as being * clobbered. This causes problems with compilers, that do a better job * at optimizing across __asm__ calls. * So, we just have to redefine all of the _syscallX() macros. */ #undef LSS_REG #define LSS_REG … /* syscall is like subroutine calls, all caller-saved registers may be * clobbered, we should add them to the |Clobbers| list. * a0 is not included because it's in the output list. */ #define LSS_SYSCALL_CLOBBERS … #undef LSS_BODY #define LSS_BODY … #undef _syscall0 #define _syscall0 … #undef _syscall1 #define _syscall1 … #undef _syscall2 #define _syscall2 … #undef _syscall3 #define _syscall3 … #undef _syscall4 #define _syscall4 … #undef _syscall5 #define _syscall5 … #undef _syscall6 #define _syscall6 … LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack, int flags, void *arg, int *parent_tidptr, void *newtls, int *child_tidptr) { int64_t __res; { register int64_t __res_a0 __asm__("a0"); register uint64_t __flags __asm__("a0") = flags; register void *__stack __asm__("a1") = child_stack; register void *__ptid __asm__("a2") = parent_tidptr; register void *__tls __asm__("a3") = newtls; register int *__ctid __asm__("a4") = child_tidptr; __asm__ __volatile__(/* Push "arg" and "fn" onto the stack that will be * used by the child. */ "addi.d %2, %2, -16\n" "st.d %1, %2, 8\n" "st.d %4, %2, 0\n" /* %a0 = syscall(%a0 = flags, * %a1 = child_stack, * %a2 = parent_tidptr, * %a3 = newtls, * %a4 = child_tidptr) */ "li.d $a7, %8\n" "syscall 0x0\n" /* if (%a0 != 0) * return %a0; */ "bnez $a0, 1f\n" /* In the child, now. Call "fn(arg)". */ "ld.d $a0, $sp, 0\n" "ld.d $a1, $sp, 8\n" "addi.d $sp, $sp, 16\n" "jirl $ra, $a1, 0\n" /* Call _exit(%a0). */ "li.d $a7, %9\n" "syscall 0x0\n" "1:\n" : "=r" (__res_a0) : "r"(fn), "r"(__stack), "r"(__flags), "r"(arg), "r"(__ptid), "r"(__tls), "r"(__ctid), "i"(__NR_clone), "i"(__NR_exit) : LSS_SYSCALL_CLOBBERS); __res = __res_a0; } LSS_RETURN(int, __res); } #endif #define __NR__exit … #define __NR__gettid … #define __NR__mremap … LSS_INLINE _syscall1(void *, brk, void *, e) LSS_INLINE _syscall1(int, chdir, const char *,p) LSS_INLINE _syscall1(int, close, int, f) LSS_INLINE _syscall2(int, clock_getres, int, c, struct kernel_timespec*, t) LSS_INLINE _syscall2(int, clock_gettime, int, c, struct kernel_timespec*, t) LSS_INLINE _syscall1(int, dup, int, f) #if defined(__NR_dup2) // dup2 is polyfilled below when not available. LSS_INLINE _syscall2(int, dup2, int, s, int, d) #endif #if defined(__NR_dup3) LSS_INLINE _syscall3(int, dup3, int, s, int, d, int, f) #endif LSS_INLINE _syscall3(int, execve, const char*, f, const char*const*,a,const char*const*, e) LSS_INLINE _syscall1(int, _exit, int, e) LSS_INLINE _syscall1(int, exit_group, int, e) LSS_INLINE _syscall3(int, fcntl, int, f, int, c, long, a) #if defined(__NR_fork) // fork is polyfilled below when not available. LSS_INLINE _syscall0(…) #endif #if defined(__NR_fstat) LSS_INLINE _syscall2(int, fstat, int, f, struct kernel_stat*, b) #endif LSS_INLINE _syscall2(int, fstatfs, int, f, struct kernel_statfs*, b) #if defined(__x86_64__) /* Need to make sure off_t isn't truncated to 32-bits under x32. */ LSS_INLINE int LSS_NAME(ftruncate)(int f, off_t l) { … } #else LSS_INLINE _syscall2(int, ftruncate, int, f, off_t, l) #endif LSS_INLINE _syscall6(int, futex, int*, u, int, o, int, v, struct kernel_timespec*, t, int*, u2, int, v2) LSS_INLINE _syscall3(int, getdents, int, f, struct kernel_dirent*, d, int, c) LSS_INLINE _syscall3(int, getdents64, int, f, struct kernel_dirent64*, d, int, c) LSS_INLINE _syscall0(…) LSS_INLINE _syscall0(…) LSS_INLINE _syscall2(int, getitimer, int, w, struct kernel_itimerval*, c) #if defined(__NR_getpgrp) LSS_INLINE _syscall0(…) #endif LSS_INLINE _syscall0(…) LSS_INLINE _syscall0(…) LSS_INLINE _syscall2(int, getpriority, int, a, int, b) LSS_INLINE _syscall3(int, getresgid, gid_t *, r, gid_t *, e, gid_t *, s) LSS_INLINE _syscall3(int, getresuid, uid_t *, r, uid_t *, e, uid_t *, s) #if defined(__NR_getrlimit) LSS_INLINE _syscall2(int, getrlimit, int, r, struct kernel_rlimit*, l) #endif LSS_INLINE _syscall1(…) LSS_INLINE _syscall0(…) LSS_INLINE _syscall2(pid_t, gettimeofday, struct kernel_timeval*, t, void*, tz) LSS_INLINE _syscall5(int, setxattr, const char *,p, const char *, n, const void *,v, size_t, s, int, f) LSS_INLINE _syscall5(int, lsetxattr, const char *,p, const char *, n, const void *,v, size_t, s, int, f) LSS_INLINE _syscall4(ssize_t, getxattr, const char *,p, const char *, n, void *, v, size_t, s) LSS_INLINE _syscall4(ssize_t, lgetxattr, const char *,p, const char *, n, void *, v, size_t, s) LSS_INLINE _syscall3(ssize_t, listxattr, const char *,p, char *, l, size_t, s) LSS_INLINE _syscall3(ssize_t, llistxattr, const char *,p, char *, l, size_t, s) LSS_INLINE _syscall3(int, ioctl, int, d, int, r, void *, a) LSS_INLINE _syscall2(int, ioprio_get, int, which, int, who) LSS_INLINE _syscall3(int, ioprio_set, int, which, int, who, int, ioprio) LSS_INLINE _syscall2(int, kill, pid_t, p, int, s) #if defined(__x86_64__) /* Need to make sure off_t isn't truncated to 32-bits under x32. */ LSS_INLINE off_t LSS_NAME(lseek)(int f, off_t o, int w) { … } #else LSS_INLINE _syscall3(off_t, lseek, int, f, off_t, o, int, w) #endif LSS_INLINE _syscall2(int, munmap, void*, s, size_t, l) LSS_INLINE _syscall6(long, move_pages, pid_t, p, unsigned long, n, void **,g, int *, d, int *, s, int, f) LSS_INLINE _syscall3(int, mprotect, const void *,a, size_t, l, int, p) LSS_INLINE _syscall5(void*, _mremap, void*, o, size_t, os, size_t, ns, unsigned long, f, void *, a) #if defined(__NR_open) // open is polyfilled below when not available. LSS_INLINE _syscall3(int, open, const char*, p, int, f, int, m) #endif #if defined(__NR_poll) // poll is polyfilled below when not available. LSS_INLINE _syscall3(int, poll, struct kernel_pollfd*, u, unsigned int, n, int, t) #endif #if defined(__NR_ppoll) LSS_INLINE _syscall5(int, ppoll, struct kernel_pollfd *, u, unsigned int, n, const struct kernel_timespec *, t, const struct kernel_sigset_t *, sigmask, size_t, s) #endif LSS_INLINE _syscall5(int, prctl, int, option, unsigned long, arg2, unsigned long, arg3, unsigned long, arg4, unsigned long, arg5) LSS_INLINE _syscall4(long, ptrace, int, r, pid_t, p, void *, a, void *, d) #if defined(__NR_quotactl) // Defined on x86_64 / i386 only LSS_INLINE _syscall4(int, quotactl, int, cmd, const char *, special, int, id, caddr_t, addr) #endif LSS_INLINE _syscall3(ssize_t, read, int, f, void *, b, size_t, c) #if defined(__NR_readlink) // readlink is polyfilled below when not available. LSS_INLINE _syscall3(int, readlink, const char*, p, char*, b, size_t, s) #endif #if defined(__NR_readlinkat) LSS_INLINE _syscall4(int, readlinkat, int, d, const char *, p, char *, b, size_t, s) #endif LSS_INLINE _syscall4(int, rt_sigaction, int, s, const struct kernel_sigaction*, a, struct kernel_sigaction*, o, size_t, c) LSS_INLINE _syscall2(int, rt_sigpending, struct kernel_sigset_t *, s, size_t, c) LSS_INLINE _syscall4(int, rt_sigprocmask, int, h, const struct kernel_sigset_t*, s, struct kernel_sigset_t*, o, size_t, c) LSS_INLINE _syscall2(int, rt_sigsuspend, const struct kernel_sigset_t*, s, size_t, c) LSS_INLINE _syscall4(int, rt_sigtimedwait, const struct kernel_sigset_t*, s, siginfo_t*, i, const struct timespec*, t, size_t, c) LSS_INLINE _syscall3(int, sched_getaffinity,pid_t, p, unsigned int, l, unsigned long *, m) LSS_INLINE _syscall3(int, sched_setaffinity,pid_t, p, unsigned int, l, unsigned long *, m) LSS_INLINE _syscall0(…) LSS_INLINE _syscall1(long, set_tid_address, int *, t) LSS_INLINE _syscall1(…) LSS_INLINE _syscall1(…) LSS_INLINE _syscall1(…) LSS_INLINE _syscall1(…) LSS_INLINE _syscall3(int, setitimer, int, w, const struct kernel_itimerval*, n, struct kernel_itimerval*, o) LSS_INLINE _syscall2(…) LSS_INLINE _syscall3(int, setpriority, int, a, int, b, int, p) LSS_INLINE _syscall3(…) LSS_INLINE _syscall3(…) #if defined(__NR_setrlimit) LSS_INLINE _syscall2(int, setrlimit, int, r, const struct kernel_rlimit*, l) #endif LSS_INLINE _syscall0(…) LSS_INLINE _syscall2(int, sigaltstack, const stack_t*, s, const stack_t*, o) #if defined(__NR_sigreturn) LSS_INLINE _syscall1(int, sigreturn, unsigned long, u) #endif #if defined(__NR_stat) // stat and lstat are polyfilled below when not available. LSS_INLINE _syscall2(int, stat, const char*, f, struct kernel_stat*, b) #endif #if defined(__NR_lstat) LSS_INLINE _syscall2(int, lstat, const char*, f, struct kernel_stat*, b) #endif LSS_INLINE _syscall2(int, statfs, const char*, f, struct kernel_statfs*, b) LSS_INLINE _syscall3(int, tgkill, pid_t, p, pid_t, t, int, s) LSS_INLINE _syscall2(int, tkill, pid_t, p, int, s) #if defined(__NR_unlink) // unlink is polyfilled below when not available. LSS_INLINE _syscall1(int, unlink, const char*, f) #endif LSS_INLINE _syscall3(ssize_t, write, int, f, const void *, b, size_t, c) LSS_INLINE _syscall3(ssize_t, writev, int, f, const struct kernel_iovec*, v, size_t, c) #if defined(__NR_getcpu) LSS_INLINE _syscall3(long, getcpu, unsigned *, cpu, unsigned *, node, void *, unused) #endif #if defined(__NR_fadvise64) #if defined(__x86_64__) /* Need to make sure loff_t isn't truncated to 32-bits under x32. */ LSS_INLINE int LSS_NAME(fadvise64)(int fd, loff_t offset, loff_t len, int advice) { … } #else LSS_INLINE _syscall4(int, fadvise64, int, fd, loff_t, offset, loff_t, len, int, advice) #endif #elif defined(__i386__) #define __NR__fadvise64_64 … LSS_INLINE _syscall6(int, _fadvise64_64, int, fd, unsigned, offset_lo, unsigned, offset_hi, unsigned, len_lo, unsigned, len_hi, int, advice) LSS_INLINE int LSS_NAME(fadvise64)(int fd, loff_t offset, loff_t len, int advice) { return LSS_NAME(_fadvise64_64)(fd, (unsigned)offset, (unsigned)(offset >>32), (unsigned)len, (unsigned)(len >> 32), advice); } #elif defined(__s390__) && !defined(__s390x__) #define __NR__fadvise64_64 … struct kernel_fadvise64_64_args { int fd; long long offset; long long len; int advice; }; LSS_INLINE _syscall1(int, _fadvise64_64, struct kernel_fadvise64_64_args *args) LSS_INLINE int LSS_NAME(fadvise64)(int fd, loff_t offset, loff_t len, int advice) { struct kernel_fadvise64_64_args args = { fd, offset, len, advice }; return LSS_NAME(_fadvise64_64)(&args); } #endif #if defined(__NR_fallocate) #if defined(__x86_64__) /* Need to make sure loff_t isn't truncated to 32-bits under x32. */ LSS_INLINE int LSS_NAME(fallocate)(int f, int mode, loff_t offset, loff_t len) { … } #elif (defined(__i386__) || (defined(__s390__) && !defined(__s390x__)) \ || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) \ || (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) \ || defined(__PPC__)) #define __NR__fallocate … LSS_INLINE _syscall6(int, _fallocate, int, fd, int, mode, unsigned, offset_lo, unsigned, offset_hi, unsigned, len_lo, unsigned, len_hi) LSS_INLINE int LSS_NAME(fallocate)(int fd, int mode, loff_t offset, loff_t len) { union { loff_t off; unsigned w[2]; } o = { offset }, l = { len }; return LSS_NAME(_fallocate)(fd, mode, o.w[0], o.w[1], l.w[0], l.w[1]); } #else LSS_INLINE _syscall4(int, fallocate, int, f, int, mode, loff_t, offset, loff_t, len) #endif #endif #if defined(__NR_getrandom) LSS_INLINE _syscall3(ssize_t, getrandom, void*, buffer, size_t, length, unsigned int, flags) #endif #if defined(__NR_newfstatat) LSS_INLINE _syscall4(int, newfstatat, int, d, const char *, p, struct kernel_stat*, b, int, f) #endif #if defined(__NR_statx) LSS_INLINE _syscall5(int, statx, int, d, const char *, p, int, f, int, m, struct kernel_statx*, b) #endif #if defined(__x86_64__) || defined(__s390x__) LSS_INLINE int LSS_NAME(getresgid32)(gid_t *rgid, gid_t *egid, gid_t *sgid) { … } LSS_INLINE int LSS_NAME(getresuid32)(uid_t *ruid, uid_t *euid, uid_t *suid) { … } LSS_INLINE int LSS_NAME(setfsgid32)(gid_t gid) { … } LSS_INLINE int LSS_NAME(setfsuid32)(uid_t uid) { … } LSS_INLINE int LSS_NAME(setresgid32)(gid_t rgid, gid_t egid, gid_t sgid) { … } LSS_INLINE int LSS_NAME(setresuid32)(uid_t ruid, uid_t euid, uid_t suid) { … } LSS_INLINE int LSS_NAME(sigaction)(int signum, const struct kernel_sigaction *act, struct kernel_sigaction *oldact) { … } LSS_INLINE int LSS_NAME(sigpending)(struct kernel_sigset_t *set) { … } LSS_INLINE int LSS_NAME(sigsuspend)(const struct kernel_sigset_t *set) { … } #endif #if defined(__NR_rt_sigprocmask) LSS_INLINE int LSS_NAME(sigprocmask)(int how, const struct kernel_sigset_t *set, struct kernel_sigset_t *oldset) { … } #endif #if defined(__NR_rt_sigtimedwait) LSS_INLINE int LSS_NAME(sigtimedwait)(const struct kernel_sigset_t *set, siginfo_t *info, const struct timespec *timeout) { … } #endif #if defined(__NR_wait4) LSS_INLINE _syscall4(pid_t, wait4, pid_t, p, int*, s, int, o, struct kernel_rusage*, r) #endif #if defined(__NR_openat) LSS_INLINE _syscall4(int, openat, int, d, const char *, p, int, f, int, m) #endif #if defined(__NR_unlinkat) LSS_INLINE _syscall3(int, unlinkat, int, d, const char *, p, int, f) #endif #if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || \ (defined(__s390__) && !defined(__s390x__)) #define __NR__getresgid32 … #define __NR__getresuid32 … #define __NR__setfsgid32 … #define __NR__setfsuid32 … #define __NR__setresgid32 … #define __NR__setresuid32 … #if defined(__ARM_EABI__) LSS_INLINE _syscall2(int, ugetrlimit, int, r, struct kernel_rlimit*, l) #endif LSS_INLINE _syscall3(int, _getresgid32, gid_t *, r, gid_t *, e, gid_t *, s) LSS_INLINE _syscall3(int, _getresuid32, uid_t *, r, uid_t *, e, uid_t *, s) LSS_INLINE _syscall1(int, _setfsgid32, gid_t, f) LSS_INLINE _syscall1(int, _setfsuid32, uid_t, f) LSS_INLINE _syscall3(int, _setresgid32, gid_t, r, gid_t, e, gid_t, s) LSS_INLINE _syscall3(int, _setresuid32, uid_t, r, uid_t, e, uid_t, s) LSS_INLINE int LSS_NAME(getresgid32)(gid_t *rgid, gid_t *egid, gid_t *sgid) { int rc; if ((rc = LSS_NAME(_getresgid32)(rgid, egid, sgid)) < 0 && LSS_ERRNO == ENOSYS) { if ((rgid == NULL) || (egid == NULL) || (sgid == NULL)) { return EFAULT; } // Clear the high bits first, since getresgid only sets 16 bits *rgid = *egid = *sgid = 0; rc = LSS_NAME(getresgid)(rgid, egid, sgid); } return rc; } LSS_INLINE int LSS_NAME(getresuid32)(uid_t *ruid, uid_t *euid, uid_t *suid) { int rc; if ((rc = LSS_NAME(_getresuid32)(ruid, euid, suid)) < 0 && LSS_ERRNO == ENOSYS) { if ((ruid == NULL) || (euid == NULL) || (suid == NULL)) { return EFAULT; } // Clear the high bits first, since getresuid only sets 16 bits *ruid = *euid = *suid = 0; rc = LSS_NAME(getresuid)(ruid, euid, suid); } return rc; } LSS_INLINE int LSS_NAME(setfsgid32)(gid_t gid) { int rc; if ((rc = LSS_NAME(_setfsgid32)(gid)) < 0 && LSS_ERRNO == ENOSYS) { if ((unsigned int)gid & ~0xFFFFu) { rc = EINVAL; } else { rc = LSS_NAME(setfsgid)(gid); } } return rc; } LSS_INLINE int LSS_NAME(setfsuid32)(uid_t uid) { int rc; if ((rc = LSS_NAME(_setfsuid32)(uid)) < 0 && LSS_ERRNO == ENOSYS) { if ((unsigned int)uid & ~0xFFFFu) { rc = EINVAL; } else { rc = LSS_NAME(setfsuid)(uid); } } return rc; } LSS_INLINE int LSS_NAME(setresgid32)(gid_t rgid, gid_t egid, gid_t sgid) { int rc; if ((rc = LSS_NAME(_setresgid32)(rgid, egid, sgid)) < 0 && LSS_ERRNO == ENOSYS) { if ((unsigned int)rgid & ~0xFFFFu || (unsigned int)egid & ~0xFFFFu || (unsigned int)sgid & ~0xFFFFu) { rc = EINVAL; } else { rc = LSS_NAME(setresgid)(rgid, egid, sgid); } } return rc; } LSS_INLINE int LSS_NAME(setresuid32)(uid_t ruid, uid_t euid, uid_t suid) { int rc; if ((rc = LSS_NAME(_setresuid32)(ruid, euid, suid)) < 0 && LSS_ERRNO == ENOSYS) { if ((unsigned int)ruid & ~0xFFFFu || (unsigned int)euid & ~0xFFFFu || (unsigned int)suid & ~0xFFFFu) { rc = EINVAL; } else { rc = LSS_NAME(setresuid)(ruid, euid, suid); } } return rc; } #endif LSS_INLINE int LSS_NAME(sigemptyset)(struct kernel_sigset_t *set) { … } LSS_INLINE int LSS_NAME(sigfillset)(struct kernel_sigset_t *set) { … } LSS_INLINE int LSS_NAME(sigaddset)(struct kernel_sigset_t *set, int signum) { … } LSS_INLINE int LSS_NAME(sigdelset)(struct kernel_sigset_t *set, int signum) { … } LSS_INLINE int LSS_NAME(sigismember)(struct kernel_sigset_t *set, int signum) { … } #if defined(__i386__) || \ defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || \ (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) || \ defined(__PPC__) || \ (defined(__s390__) && !defined(__s390x__)) || defined(__e2k__) #define __NR__sigaction … #define __NR__sigpending … #define __NR__sigsuspend … #define __NR__socketcall … LSS_INLINE _syscall2(int, fstat64, int, f, struct kernel_stat64 *, b) LSS_INLINE _syscall5(int, _llseek, uint, fd, unsigned long, hi, unsigned long, lo, loff_t *, res, uint, wh) #if defined(__s390__) && !defined(__s390x__) /* On s390, mmap2() arguments are passed in memory. */ LSS_INLINE void* LSS_NAME(_mmap2)(void *s, size_t l, int p, int f, int d, off_t o) { unsigned long buf[6] = { (unsigned long) s, (unsigned long) l, (unsigned long) p, (unsigned long) f, (unsigned long) d, (unsigned long) o }; LSS_REG(2, buf); LSS_BODY(void*, mmap2, "0"(__r2)); } #else #define __NR__mmap2 … LSS_INLINE _syscall6(void*, _mmap2, void*, s, size_t, l, int, p, int, f, int, d, off_t, o) #endif LSS_INLINE _syscall3(int, _sigaction, int, s, const struct kernel_old_sigaction*, a, struct kernel_old_sigaction*, o) LSS_INLINE _syscall1(int, _sigpending, unsigned long*, s) #ifdef __PPC__ LSS_INLINE _syscall1(int, _sigsuspend, unsigned long, s) #else LSS_INLINE _syscall3(int, _sigsuspend, const void*, a, int, b, unsigned long, s) #endif LSS_INLINE _syscall2(int, stat64, const char *, p, struct kernel_stat64 *, b) LSS_INLINE int LSS_NAME(sigaction)(int signum, const struct kernel_sigaction *act, struct kernel_sigaction *oldact) { int old_errno = LSS_ERRNO; int rc; struct kernel_sigaction a; if (act != NULL) { a = *act; #ifdef __i386__ /* On i386, the kernel requires us to always set our own * SA_RESTORER when using realtime signals. Otherwise, it does not * know how to return from a signal handler. This function must have * a "magic" signature that the "gdb" (and maybe the kernel?) can * recognize. * Apparently, a SA_RESTORER is implicitly set by the kernel, when * using non-realtime signals. * * TODO: Test whether ARM needs a restorer */ if (!(a.sa_flags & SA_RESTORER)) { a.sa_flags |= SA_RESTORER; a.sa_restorer = (a.sa_flags & SA_SIGINFO) ? LSS_NAME(restore_rt)() : LSS_NAME(restore)(); } #endif } rc = LSS_NAME(rt_sigaction)(signum, act ? &a : act, oldact, (KERNEL_NSIG+7)/8); if (rc < 0 && LSS_ERRNO == ENOSYS) { struct kernel_old_sigaction oa, ooa, *ptr_a = &oa, *ptr_oa = &ooa; if (!act) { ptr_a = NULL; } else { oa.sa_handler_ = act->sa_handler_; memcpy(&oa.sa_mask, &act->sa_mask, sizeof(oa.sa_mask)); #ifndef __mips__ oa.sa_restorer = act->sa_restorer; #endif oa.sa_flags = act->sa_flags; } if (!oldact) { ptr_oa = NULL; } LSS_ERRNO = old_errno; rc = LSS_NAME(_sigaction)(signum, ptr_a, ptr_oa); if (rc == 0 && oldact) { if (act) { memcpy(oldact, act, sizeof(*act)); } else { memset(oldact, 0, sizeof(*oldact)); } oldact->sa_handler_ = ptr_oa->sa_handler_; oldact->sa_flags = ptr_oa->sa_flags; memcpy(&oldact->sa_mask, &ptr_oa->sa_mask, sizeof(ptr_oa->sa_mask)); #ifndef __mips__ oldact->sa_restorer = ptr_oa->sa_restorer; #endif } } return rc; } LSS_INLINE int LSS_NAME(sigpending)(struct kernel_sigset_t *set) { int old_errno = LSS_ERRNO; int rc = LSS_NAME(rt_sigpending)(set, (KERNEL_NSIG+7)/8); if (rc < 0 && LSS_ERRNO == ENOSYS) { LSS_ERRNO = old_errno; LSS_NAME(sigemptyset)(set); rc = LSS_NAME(_sigpending)(&set->sig[0]); } return rc; } LSS_INLINE int LSS_NAME(sigsuspend)(const struct kernel_sigset_t *set) { int olderrno = LSS_ERRNO; int rc = LSS_NAME(rt_sigsuspend)(set, (KERNEL_NSIG+7)/8); if (rc < 0 && LSS_ERRNO == ENOSYS) { LSS_ERRNO = olderrno; rc = LSS_NAME(_sigsuspend)( #ifndef __PPC__ set, 0, #endif set->sig[0]); } return rc; } #endif #if defined(__i386__) || \ defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || \ (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) || \ defined(__PPC__) || \ (defined(__s390__) && !defined(__s390x__)) /* On these architectures, implement mmap() with mmap2(). */ LSS_INLINE void* LSS_NAME(mmap)(void *s, size_t l, int p, int f, int d, int64_t o) { if (o % 4096) { LSS_ERRNO = EINVAL; return (void *) -1; } return LSS_NAME(_mmap2)(s, l, p, f, d, (o / 4096)); } #elif defined(__s390x__) /* On s390x, mmap() arguments are passed in memory. */ LSS_INLINE void* LSS_NAME(mmap)(void *s, size_t l, int p, int f, int d, int64_t o) { unsigned long buf[6] = { (unsigned long) s, (unsigned long) l, (unsigned long) p, (unsigned long) f, (unsigned long) d, (unsigned long) o }; LSS_REG(2, buf); LSS_BODY(void*, mmap, "0"(__r2)); } #elif defined(__x86_64__) /* Need to make sure __off64_t isn't truncated to 32-bits under x32. */ LSS_INLINE void* LSS_NAME(mmap)(void *s, size_t l, int p, int f, int d, int64_t o) { … } #else /* Remaining 64-bit architectures. */ LSS_INLINE _syscall6(void*, mmap, void*, addr, size_t, length, int, prot, int, flags, int, fd, int64_t, offset) #endif #if defined(__PPC__) #undef LSS_SC_LOADARGS_0 #define LSS_SC_LOADARGS_0 … #undef LSS_SC_LOADARGS_1 #define LSS_SC_LOADARGS_1 … #undef LSS_SC_LOADARGS_2 #define LSS_SC_LOADARGS_2 … #undef LSS_SC_LOADARGS_3 #define LSS_SC_LOADARGS_3 … #undef LSS_SC_LOADARGS_4 #define LSS_SC_LOADARGS_4 … #undef LSS_SC_LOADARGS_5 #define LSS_SC_LOADARGS_5 … #undef LSS_SC_BODY #define LSS_SC_BODY … LSS_INLINE ssize_t LSS_NAME(recvmsg)(int s,struct kernel_msghdr *msg, int flags){ LSS_SC_BODY(3, ssize_t, 17, s, msg, flags); } LSS_INLINE ssize_t LSS_NAME(sendmsg)(int s, const struct kernel_msghdr *msg, int flags) { LSS_SC_BODY(3, ssize_t, 16, s, msg, flags); } // TODO(csilvers): why is this ifdef'ed out? #if 0 LSS_INLINE ssize_t LSS_NAME(sendto)(int s, const void *buf, size_t len, int flags, const struct kernel_sockaddr *to, unsigned int tolen) { LSS_BODY(6, ssize_t, 11, s, buf, len, flags, to, tolen); } #endif LSS_INLINE int LSS_NAME(shutdown)(int s, int how) { LSS_SC_BODY(2, int, 13, s, how); } LSS_INLINE int LSS_NAME(socket)(int domain, int type, int protocol) { LSS_SC_BODY(3, int, 1, domain, type, protocol); } LSS_INLINE int LSS_NAME(socketpair)(int d, int type, int protocol, int sv[2]) { LSS_SC_BODY(4, int, 8, d, type, protocol, sv); } #endif #if defined(__NR_recvmsg) LSS_INLINE _syscall3(ssize_t, recvmsg, int, s, struct kernel_msghdr*, msg, int, flags) #endif #if defined(__NR_sendmsg) LSS_INLINE _syscall3(ssize_t, sendmsg, int, s, const struct kernel_msghdr*, msg, int, flags) #endif #if defined(__NR_sendto) LSS_INLINE _syscall6(ssize_t, sendto, int, s, const void*, buf, size_t,len, int, flags, const struct kernel_sockaddr*, to, unsigned int, tolen) #endif #if defined(__NR_shutdown) LSS_INLINE _syscall2(int, shutdown, int, s, int, how) #endif #if defined(__NR_socket) LSS_INLINE _syscall3(int, socket, int, domain, int, type, int, protocol) #endif #if defined(__NR_socketpair) LSS_INLINE _syscall4(int, socketpair, int, d, int, type, int, protocol, int*, sv) #endif #if defined(__NR_socketcall) LSS_INLINE _syscall2(int, _socketcall, int, c, va_list, a) LSS_INLINE int LSS_NAME(socketcall)(int op, ...) { int rc; va_list ap; va_start(ap, op); rc = LSS_NAME(_socketcall)(op, ap); va_end(ap); return rc; } # if !defined(__NR_recvmsg) LSS_INLINE ssize_t LSS_NAME(recvmsg)(int s,struct kernel_msghdr *msg, int flags){ return (ssize_t)LSS_NAME(socketcall)(17, s, msg, flags); } # endif # if !defined(__NR_sendmsg) LSS_INLINE ssize_t LSS_NAME(sendmsg)(int s, const struct kernel_msghdr *msg, int flags) { return (ssize_t)LSS_NAME(socketcall)(16, s, msg, flags); } # endif # if !defined(__NR_sendto) LSS_INLINE ssize_t LSS_NAME(sendto)(int s, const void *buf, size_t len, int flags, const struct kernel_sockaddr *to, unsigned int tolen) { return (ssize_t)LSS_NAME(socketcall)(11, s, buf, len, flags, to, tolen); } # endif # if !defined(__NR_shutdown) LSS_INLINE int LSS_NAME(shutdown)(int s, int how) { return LSS_NAME(socketcall)(13, s, how); } # endif # if !defined(__NR_socket) LSS_INLINE int LSS_NAME(socket)(int domain, int type, int protocol) { return LSS_NAME(socketcall)(1, domain, type, protocol); } # endif # if !defined(__NR_socketpair) LSS_INLINE int LSS_NAME(socketpair)(int d, int type, int protocol, int sv[2]) { return LSS_NAME(socketcall)(8, d, type, protocol, sv); } # endif #endif #if defined(__NR_fstatat64) LSS_INLINE _syscall4(int, fstatat64, int, d, const char *, p, struct kernel_stat64 *, b, int, f) #endif #if defined(__NR_waitpid) // waitpid is polyfilled below when not available. LSS_INLINE _syscall3(pid_t, waitpid, pid_t, p, int*, s, int, o) #endif #if defined(__mips__) /* sys_pipe() on MIPS has non-standard calling conventions, as it returns * both file handles through CPU registers. */ LSS_INLINE int LSS_NAME(pipe)(int *p) { register unsigned long __v0 __asm__("$2") = __NR_pipe; register unsigned long __v1 __asm__("$3"); register unsigned long __r7 __asm__("$7"); __asm__ __volatile__ ("syscall\n" : "=r"(__v0), "=r"(__v1), "=r" (__r7) : "0"(__v0) : "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25", "memory"); if (__r7) { unsigned long __errnovalue = __v0; LSS_ERRNO = __errnovalue; return -1; } else { p[0] = __v0; p[1] = __v1; return 0; } } #elif defined(__NR_pipe) // pipe is polyfilled below when not available. LSS_INLINE _syscall1(int, pipe, int *, p) #endif #if defined(__NR_pipe2) LSS_INLINE _syscall2(int, pipe2, int *, pipefd, int, flags) #endif /* TODO(csilvers): see if ppc can/should support this as well */ #if defined(__i386__) || defined(__ARM_ARCH_3__) || \ defined(__ARM_EABI__) || \ (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64) || \ (defined(__s390__) && !defined(__s390x__)) #define __NR__statfs64 … #define __NR__fstatfs64 … LSS_INLINE _syscall3(int, _statfs64, const char*, p, size_t, s,struct kernel_statfs64*, b) LSS_INLINE _syscall3(int, _fstatfs64, int, f, size_t, s,struct kernel_statfs64*, b) LSS_INLINE int LSS_NAME(statfs64)(const char *p, struct kernel_statfs64 *b) { return LSS_NAME(_statfs64)(p, sizeof(*b), b); } LSS_INLINE int LSS_NAME(fstatfs64)(int f,struct kernel_statfs64 *b) { return LSS_NAME(_fstatfs64)(f, sizeof(*b), b); } #endif LSS_INLINE int LSS_NAME(execv)(const char *path, const char *const argv[]) { … } LSS_INLINE pid_t LSS_NAME(gettid)(void) { … } LSS_INLINE void *LSS_NAME(mremap)(void *old_address, size_t old_size, size_t new_size, int flags, ...) { … } LSS_INLINE long LSS_NAME(ptrace_detach)(pid_t pid) { … } LSS_INLINE int LSS_NAME(raise)(int sig) { … } LSS_INLINE int LSS_NAME(setpgrp)(void) { … } #if defined(__x86_64__) /* Need to make sure loff_t isn't truncated to 32-bits under x32. */ LSS_INLINE ssize_t LSS_NAME(pread64)(int f, void *b, size_t c, loff_t o) { … } LSS_INLINE ssize_t LSS_NAME(pwrite64)(int f, const void *b, size_t c, loff_t o) { … } LSS_INLINE int LSS_NAME(readahead)(int f, loff_t o, size_t c) { … } #elif defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI64 LSS_INLINE _syscall4(ssize_t, pread64, int, f, void *, b, size_t, c, loff_t, o) LSS_INLINE _syscall4(ssize_t, pwrite64, int, f, const void *, b, size_t, c, loff_t, o) LSS_INLINE _syscall3(int, readahead, int, f, loff_t, o, unsigned, c) #else #define __NR__pread64 … #define __NR__pwrite64 … #define __NR__readahead … #if defined(__ARM_EABI__) || defined(__mips__) /* On ARM and MIPS, a 64-bit parameter has to be in an even-odd register * pair. Hence these calls ignore their fourth argument (r3) so that their * fifth and sixth make such a pair (r4,r5). */ #define LSS_LLARG_PAD … LSS_INLINE _syscall6(ssize_t, _pread64, int, f, void *, b, size_t, c, unsigned, skip, unsigned, o1, unsigned, o2) LSS_INLINE _syscall6(ssize_t, _pwrite64, int, f, const void *, b, size_t, c, unsigned, skip, unsigned, o1, unsigned, o2) LSS_INLINE _syscall5(int, _readahead, int, f, unsigned, skip, unsigned, o1, unsigned, o2, size_t, c) #else #define LSS_LLARG_PAD LSS_INLINE _syscall5(ssize_t, _pread64, int, f, void *, b, size_t, c, unsigned, o1, unsigned, o2) LSS_INLINE _syscall5(ssize_t, _pwrite64, int, f, const void *, b, size_t, c, unsigned, o1, unsigned, o2) LSS_INLINE _syscall4(int, _readahead, int, f, unsigned, o1, unsigned, o2, size_t, c) #endif /* We force 64bit-wide parameters onto the stack, then access each * 32-bit component individually. This guarantees that we build the * correct parameters independent of the native byte-order of the * underlying architecture. */ LSS_INLINE ssize_t LSS_NAME(pread64)(int fd, void *buf, size_t count, loff_t off) { union { loff_t off; unsigned arg[2]; } o = { off }; return LSS_NAME(_pread64)(fd, buf, count, LSS_LLARG_PAD o.arg[0], o.arg[1]); } LSS_INLINE ssize_t LSS_NAME(pwrite64)(int fd, const void *buf, size_t count, loff_t off) { union { loff_t off; unsigned arg[2]; } o = { off }; return LSS_NAME(_pwrite64)(fd, buf, count, LSS_LLARG_PAD o.arg[0], o.arg[1]); } LSS_INLINE int LSS_NAME(readahead)(int fd, loff_t off, size_t count) { union { loff_t off; unsigned arg[2]; } o = { off }; return LSS_NAME(_readahead)(fd, LSS_LLARG_PAD o.arg[0], o.arg[1], count); } #endif #endif /* * Polyfills for deprecated syscalls. */ #if !defined(__NR_dup2) LSS_INLINE int LSS_NAME(dup2)(int s, int d) { return LSS_NAME(dup3)(s, d, 0); } #endif #if !defined(__NR_open) LSS_INLINE int LSS_NAME(open)(const char *pathname, int flags, int mode) { return LSS_NAME(openat)(AT_FDCWD, pathname, flags, mode); } #endif #if !defined(__NR_unlink) LSS_INLINE int LSS_NAME(unlink)(const char *pathname) { return LSS_NAME(unlinkat)(AT_FDCWD, pathname, 0); } #endif #if !defined(__NR_readlink) LSS_INLINE int LSS_NAME(readlink)(const char *pathname, char *buffer, size_t size) { return LSS_NAME(readlinkat)(AT_FDCWD, pathname, buffer, size); } #endif #if !defined(__NR_pipe) LSS_INLINE int LSS_NAME(pipe)(int *pipefd) { return LSS_NAME(pipe2)(pipefd, 0); } #endif #if !defined(__NR_poll) LSS_INLINE int LSS_NAME(poll)(struct kernel_pollfd *fds, unsigned int nfds, int timeout) { struct kernel_timespec timeout_ts; struct kernel_timespec *timeout_ts_p = NULL; if (timeout >= 0) { timeout_ts.tv_sec = timeout / 1000; timeout_ts.tv_nsec = (timeout % 1000) * 1000000; timeout_ts_p = &timeout_ts; } return LSS_NAME(ppoll)(fds, nfds, timeout_ts_p, NULL, 0); } #endif #if defined(__NR_statx) /* copy the contents of kernel_statx to the kernel_stat structure. */ LSS_INLINE void LSS_NAME(cp_stat_statx)(struct kernel_stat *to, struct kernel_statx *from) { … } #endif #if !defined(__NR_fstat) LSS_INLINE int LSS_NAME(fstat)(int fd, struct kernel_stat *buf) { #if defined(__NR_newfstatat) return LSS_NAME(newfstatat)(fd, "", buf, AT_EMPTY_PATH); #elif defined(__NR_statx) struct kernel_statx stx; int flags = AT_NO_AUTOMOUNT | AT_EMPTY_PATH; int mask = STATX_BASIC_STATS; int res = LSS_NAME(statx)(fd, "", flags, mask, &stx); LSS_NAME(cp_stat_statx)(buf, &stx); return res; #endif } #endif #if !defined(__NR_stat) LSS_INLINE int LSS_NAME(stat)(const char *pathname, struct kernel_stat *buf) { #if defined(__NR_newfstatat) return LSS_NAME(newfstatat)(AT_FDCWD, pathname, buf, 0); #elif defined(__NR_statx) struct kernel_statx stx; int flags = AT_NO_AUTOMOUNT | AT_STATX_SYNC_AS_STAT; int mask = STATX_BASIC_STATS; int res = LSS_NAME(statx)(AT_FDCWD, pathname, flags, mask, &stx); LSS_NAME(cp_stat_statx)(buf, &stx); return res; #endif } #endif #if !defined(__NR_lstat) LSS_INLINE int LSS_NAME(lstat)(const char *pathname, struct kernel_stat *buf) { #if defined(__NR_newfstatat) return LSS_NAME(newfstatat)(AT_FDCWD, pathname, buf, AT_SYMLINK_NOFOLLOW); #elif defined(__NR_statx) struct kernel_statx stx; int flags = AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW; int mask = STATX_BASIC_STATS; int res = LSS_NAME(statx)(AT_FDCWD, pathname, flags, mask, &stx); LSS_NAME(cp_stat_statx)(buf, &stx); return res; #endif } #endif #if !defined(__NR_waitpid) LSS_INLINE pid_t LSS_NAME(waitpid)(pid_t pid, int *status, int options) { … } #endif #if !defined(__NR_fork) // TODO: define this in an arch-independant way instead of inlining the clone // syscall body. # if defined(__aarch64__) || defined(__riscv) || defined(__loongarch_lp64) LSS_INLINE pid_t LSS_NAME(fork)(void) { // No fork syscall on aarch64 - implement by means of the clone syscall. // Note that this does not reset glibc's cached view of the PID/TID, so // some glibc interfaces might go wrong in the forked subprocess. int flags = SIGCHLD; void *child_stack = NULL; void *parent_tidptr = NULL; void *newtls = NULL; void *child_tidptr = NULL; LSS_REG(0, flags); LSS_REG(1, child_stack); LSS_REG(2, parent_tidptr); LSS_REG(3, newtls); LSS_REG(4, child_tidptr); LSS_BODY(pid_t, clone, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), "r"(__r4)); } # elif defined(__x86_64__) LSS_INLINE pid_t LSS_NAME(fork)(void) { // Android disallows the fork syscall on x86_64 - implement by means of the // clone syscall as above for aarch64. int flags = SIGCHLD; void *child_stack = NULL; void *parent_tidptr = NULL; void *newtls = NULL; void *child_tidptr = NULL; LSS_BODY(5, pid_t, clone, LSS_SYSCALL_ARG(flags), LSS_SYSCALL_ARG(child_stack), LSS_SYSCALL_ARG(parent_tidptr), LSS_SYSCALL_ARG(newtls), LSS_SYSCALL_ARG(child_tidptr)); } # else # error missing fork polyfill for this architecture # endif #endif /* These restore the original values of these macros saved by the * corresponding #pragma push_macro near the top of this file. */ #pragma pop_macro("stat64") #pragma pop_macro("fstat64") #pragma pop_macro("lstat64") #pragma pop_macro("pread64") #pragma pop_macro("pwrite64") #pragma pop_macro("getdents64") #if defined(__cplusplus) && !defined(SYS_CPLUSPLUS) } #endif #endif #endif
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