/* 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, and PPC 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(__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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef __mips__ /* Include definitions of the ABI currently in use. */ #include #endif #endif /* The Android NDK's #defines these macros as aliases * to their non-64 counterparts. To avoid naming conflict, remove them. */ #ifdef __ANDROID__ /* 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") # undef stat64 # undef fstat64 # undef lstat64 #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 { unsigned long long d_ino; long long d_off; unsigned short d_reclen; unsigned char d_type; char d_name[256]; }; /* include/linux/dirent.h */ struct kernel_dirent { long d_ino; long d_off; unsigned short d_reclen; char d_name[256]; }; /* include/linux/uio.h */ struct kernel_iovec { void *iov_base; unsigned long iov_len; }; /* include/linux/socket.h */ struct kernel_msghdr { void *msg_name; int msg_namelen; struct kernel_iovec*msg_iov; unsigned long msg_iovlen; void *msg_control; unsigned long msg_controllen; unsigned msg_flags; }; /* include/asm-generic/poll.h */ struct kernel_pollfd { int fd; short events; short revents; }; /* include/linux/resource.h */ struct kernel_rlimit { unsigned long rlim_cur; unsigned long rlim_max; }; /* include/linux/time.h */ struct kernel_timespec { long tv_sec; long tv_nsec; }; /* include/linux/time.h */ struct kernel_timeval { long tv_sec; long tv_usec; }; /* include/linux/resource.h */ struct kernel_rusage { struct kernel_timeval ru_utime; struct kernel_timeval ru_stime; long ru_maxrss; long ru_ixrss; long ru_idrss; long ru_isrss; long ru_minflt; long ru_majflt; long ru_nswap; long ru_inblock; long ru_oublock; long ru_msgsnd; long ru_msgrcv; long ru_nsignals; long ru_nvcsw; long ru_nivcsw; }; #if defined(__i386__) || defined(__ARM_EABI__) || defined(__ARM_ARCH_3__) \ || defined(__PPC__) /* 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 kernel_sigaction #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 128 #else #define KERNEL_NSIG 64 #endif /* include/asm-{arm,i386,mips,x86_64}/signal.h */ struct kernel_sigset_t { unsigned long sig[(KERNEL_NSIG + 8*sizeof(unsigned long) - 1)/ (8*sizeof(unsigned long))]; }; /* include/asm-{arm,i386,mips,x86_64,ppc}/signal.h */ struct kernel_sigaction { #ifdef __mips__ unsigned long sa_flags; union { void (*sa_handler_)(int); void (*sa_sigaction_)(int, siginfo_t *, void *); }; struct kernel_sigset_t sa_mask; #else union { void (*sa_handler_)(int); void (*sa_sigaction_)(int, siginfo_t *, void *); }; unsigned long sa_flags; void (*sa_restorer)(void); struct kernel_sigset_t sa_mask; #endif }; /* include/linux/socket.h */ struct kernel_sockaddr { unsigned short sa_family; char sa_data[14]; }; /* include/asm-{arm,i386,mips,ppc}/stat.h */ #ifdef __mips__ #if _MIPS_SIM == _MIPS_SIM_ABI64 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; }; #else struct kernel_stat64 { unsigned long long st_dev; unsigned char __pad0[4]; unsigned __st_ino; unsigned st_mode; unsigned st_nlink; unsigned st_uid; unsigned st_gid; unsigned long long st_rdev; unsigned char __pad3[4]; long long st_size; unsigned st_blksize; unsigned long long st_blocks; unsigned st_atime_; unsigned st_atime_nsec_; unsigned st_mtime_; unsigned st_mtime_nsec_; unsigned st_ctime_; unsigned st_ctime_nsec_; unsigned long long st_ino; }; #endif /* include/asm-{arm,i386,mips,x86_64,ppc}/stat.h */ #if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) 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. */ unsigned short st_dev; short pad1; unsigned st_ino; unsigned short st_mode; unsigned short st_nlink; unsigned short st_uid; unsigned short st_gid; unsigned short st_rdev; short pad2; unsigned st_size; unsigned st_blksize; unsigned st_blocks; unsigned st_atime_; unsigned st_atime_nsec_; unsigned st_mtime_; unsigned st_mtime_nsec_; unsigned st_ctime_; unsigned st_ctime_nsec_; unsigned __unused4; unsigned __unused5; }; #elif defined(__x86_64__) struct kernel_stat { uint64_t st_dev; uint64_t st_ino; uint64_t st_nlink; unsigned st_mode; unsigned st_uid; unsigned st_gid; unsigned __pad0; uint64_t st_rdev; int64_t st_size; int64_t st_blksize; int64_t st_blocks; uint64_t st_atime_; uint64_t st_atime_nsec_; uint64_t st_mtime_; uint64_t st_mtime_nsec_; uint64_t st_ctime_; uint64_t st_ctime_nsec_; int64_t __unused[3]; }; #elif defined(__PPC__) struct kernel_stat { unsigned st_dev; unsigned long st_ino; // ino_t unsigned long st_mode; // mode_t unsigned short st_nlink; // nlink_t unsigned st_uid; // uid_t unsigned st_gid; // gid_t unsigned st_rdev; long st_size; // off_t unsigned long st_blksize; unsigned long st_blocks; unsigned long st_atime_; unsigned long st_atime_nsec_; unsigned long st_mtime_; unsigned long st_mtime_nsec_; unsigned long st_ctime_; unsigned long st_ctime_nsec_; unsigned long __unused4; unsigned long __unused5; }; #elif (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64) struct kernel_stat { unsigned st_dev; int st_pad1[3]; unsigned st_ino; unsigned st_mode; unsigned st_nlink; unsigned st_uid; unsigned st_gid; unsigned st_rdev; int st_pad2[2]; long st_size; int st_pad3; long st_atime_; long st_atime_nsec_; long st_mtime_; long st_mtime_nsec_; long st_ctime_; long st_ctime_nsec_; int st_blksize; int st_blocks; int st_pad4[14]; }; #endif /* include/asm-{arm,i386,mips,x86_64,ppc}/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(__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}/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 { /* x86_64 actually defines all these fields as signed, whereas all other */ /* platforms define them as unsigned. Leaving them at unsigned should not */ /* cause any problems. Make sure these are 64-bit even on x32. */ uint64_t f_type; uint64_t f_bsize; uint64_t f_blocks; uint64_t f_bfree; uint64_t f_bavail; uint64_t f_files; uint64_t f_ffree; struct { int val[2]; } f_fsid; uint64_t f_namelen; uint64_t f_frsize; uint64_t f_spare[5]; }; #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 /* Definitions missing from the standard header files */ #ifndef O_DIRECTORY #if defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) #define O_DIRECTORY 0040000 #else #define O_DIRECTORY 0200000 #endif #endif #ifndef NT_PRXFPREG #define NT_PRXFPREG 0x46e62b7f #endif #ifndef PTRACE_GETFPXREGS #define PTRACE_GETFPXREGS ((enum __ptrace_request)18) #endif #ifndef PR_GET_DUMPABLE #define PR_GET_DUMPABLE 3 #endif #ifndef PR_SET_DUMPABLE #define PR_SET_DUMPABLE 4 #endif #ifndef PR_GET_SECCOMP #define PR_GET_SECCOMP 21 #endif #ifndef PR_SET_SECCOMP #define PR_SET_SECCOMP 22 #endif #ifndef AT_FDCWD #define AT_FDCWD (-100) #endif #ifndef AT_SYMLINK_NOFOLLOW #define AT_SYMLINK_NOFOLLOW 0x100 #endif #ifndef AT_REMOVEDIR #define AT_REMOVEDIR 0x200 #endif #ifndef MREMAP_FIXED #define MREMAP_FIXED 2 #endif #ifndef SA_RESTORER #define SA_RESTORER 0x04000000 #endif #ifndef CPUCLOCK_PROF #define CPUCLOCK_PROF 0 #endif #ifndef CPUCLOCK_VIRT #define CPUCLOCK_VIRT 1 #endif #ifndef CPUCLOCK_SCHED #define CPUCLOCK_SCHED 2 #endif #ifndef CPUCLOCK_PERTHREAD_MASK #define CPUCLOCK_PERTHREAD_MASK 4 #endif #ifndef MAKE_PROCESS_CPUCLOCK #define MAKE_PROCESS_CPUCLOCK(pid, clock) \ ((~(int)(pid) << 3) | (int)(clock)) #endif #ifndef MAKE_THREAD_CPUCLOCK #define MAKE_THREAD_CPUCLOCK(tid, clock) \ ((~(int)(tid) << 3) | (int)((clock) | CPUCLOCK_PERTHREAD_MASK)) #endif #ifndef FUTEX_WAIT #define FUTEX_WAIT 0 #endif #ifndef FUTEX_WAKE #define FUTEX_WAKE 1 #endif #ifndef FUTEX_FD #define FUTEX_FD 2 #endif #ifndef FUTEX_REQUEUE #define FUTEX_REQUEUE 3 #endif #ifndef FUTEX_CMP_REQUEUE #define FUTEX_CMP_REQUEUE 4 #endif #ifndef FUTEX_WAKE_OP #define FUTEX_WAKE_OP 5 #endif #ifndef FUTEX_LOCK_PI #define FUTEX_LOCK_PI 6 #endif #ifndef FUTEX_UNLOCK_PI #define FUTEX_UNLOCK_PI 7 #endif #ifndef FUTEX_TRYLOCK_PI #define FUTEX_TRYLOCK_PI 8 #endif #ifndef FUTEX_PRIVATE_FLAG #define FUTEX_PRIVATE_FLAG 128 #endif #ifndef FUTEX_CMD_MASK #define FUTEX_CMD_MASK ~FUTEX_PRIVATE_FLAG #endif #ifndef FUTEX_WAIT_PRIVATE #define FUTEX_WAIT_PRIVATE (FUTEX_WAIT | FUTEX_PRIVATE_FLAG) #endif #ifndef FUTEX_WAKE_PRIVATE #define FUTEX_WAKE_PRIVATE (FUTEX_WAKE | FUTEX_PRIVATE_FLAG) #endif #ifndef FUTEX_REQUEUE_PRIVATE #define FUTEX_REQUEUE_PRIVATE (FUTEX_REQUEUE | FUTEX_PRIVATE_FLAG) #endif #ifndef FUTEX_CMP_REQUEUE_PRIVATE #define FUTEX_CMP_REQUEUE_PRIVATE (FUTEX_CMP_REQUEUE | FUTEX_PRIVATE_FLAG) #endif #ifndef FUTEX_WAKE_OP_PRIVATE #define FUTEX_WAKE_OP_PRIVATE (FUTEX_WAKE_OP | FUTEX_PRIVATE_FLAG) #endif #ifndef FUTEX_LOCK_PI_PRIVATE #define FUTEX_LOCK_PI_PRIVATE (FUTEX_LOCK_PI | FUTEX_PRIVATE_FLAG) #endif #ifndef FUTEX_UNLOCK_PI_PRIVATE #define FUTEX_UNLOCK_PI_PRIVATE (FUTEX_UNLOCK_PI | FUTEX_PRIVATE_FLAG) #endif #ifndef FUTEX_TRYLOCK_PI_PRIVATE #define FUTEX_TRYLOCK_PI_PRIVATE (FUTEX_TRYLOCK_PI | FUTEX_PRIVATE_FLAG) #endif #if defined(__x86_64__) #ifndef ARCH_SET_GS #define ARCH_SET_GS 0x1001 #endif #ifndef ARCH_GET_GS #define ARCH_GET_GS 0x1004 #endif #endif #if defined(__i386__) #ifndef __NR_quotactl #define __NR_quotactl 131 #endif #ifndef __NR_setresuid #define __NR_setresuid 164 #define __NR_getresuid 165 #define __NR_setresgid 170 #define __NR_getresgid 171 #endif #ifndef __NR_rt_sigaction #define __NR_rt_sigreturn 173 #define __NR_rt_sigaction 174 #define __NR_rt_sigprocmask 175 #define __NR_rt_sigpending 176 #define __NR_rt_sigsuspend 179 #endif #ifndef __NR_pread64 #define __NR_pread64 180 #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 181 #endif #ifndef __NR_ugetrlimit #define __NR_ugetrlimit 191 #endif #ifndef __NR_stat64 #define __NR_stat64 195 #endif #ifndef __NR_fstat64 #define __NR_fstat64 197 #endif #ifndef __NR_setresuid32 #define __NR_setresuid32 208 #define __NR_getresuid32 209 #define __NR_setresgid32 210 #define __NR_getresgid32 211 #endif #ifndef __NR_setfsuid32 #define __NR_setfsuid32 215 #define __NR_setfsgid32 216 #endif #ifndef __NR_getdents64 #define __NR_getdents64 220 #endif #ifndef __NR_gettid #define __NR_gettid 224 #endif #ifndef __NR_readahead #define __NR_readahead 225 #endif #ifndef __NR_setxattr #define __NR_setxattr 226 #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr 227 #endif #ifndef __NR_getxattr #define __NR_getxattr 229 #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr 230 #endif #ifndef __NR_listxattr #define __NR_listxattr 232 #endif #ifndef __NR_llistxattr #define __NR_llistxattr 233 #endif #ifndef __NR_tkill #define __NR_tkill 238 #endif #ifndef __NR_futex #define __NR_futex 240 #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity 241 #define __NR_sched_getaffinity 242 #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address 258 #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime 265 #endif #ifndef __NR_clock_getres #define __NR_clock_getres 266 #endif #ifndef __NR_statfs64 #define __NR_statfs64 268 #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 269 #endif #ifndef __NR_fadvise64_64 #define __NR_fadvise64_64 272 #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set 289 #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get 290 #endif #ifndef __NR_openat #define __NR_openat 295 #endif #ifndef __NR_fstatat64 #define __NR_fstatat64 300 #endif #ifndef __NR_unlinkat #define __NR_unlinkat 301 #endif #ifndef __NR_move_pages #define __NR_move_pages 317 #endif #ifndef __NR_getcpu #define __NR_getcpu 318 #endif #ifndef __NR_fallocate #define __NR_fallocate 324 #endif /* End of i386 definitions */ #elif defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) #ifndef __NR_setresuid #define __NR_setresuid (__NR_SYSCALL_BASE + 164) #define __NR_getresuid (__NR_SYSCALL_BASE + 165) #define __NR_setresgid (__NR_SYSCALL_BASE + 170) #define __NR_getresgid (__NR_SYSCALL_BASE + 171) #endif #ifndef __NR_rt_sigaction #define __NR_rt_sigreturn (__NR_SYSCALL_BASE + 173) #define __NR_rt_sigaction (__NR_SYSCALL_BASE + 174) #define __NR_rt_sigprocmask (__NR_SYSCALL_BASE + 175) #define __NR_rt_sigpending (__NR_SYSCALL_BASE + 176) #define __NR_rt_sigsuspend (__NR_SYSCALL_BASE + 179) #endif #ifndef __NR_pread64 #define __NR_pread64 (__NR_SYSCALL_BASE + 180) #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 (__NR_SYSCALL_BASE + 181) #endif #ifndef __NR_ugetrlimit #define __NR_ugetrlimit (__NR_SYSCALL_BASE + 191) #endif #ifndef __NR_stat64 #define __NR_stat64 (__NR_SYSCALL_BASE + 195) #endif #ifndef __NR_fstat64 #define __NR_fstat64 (__NR_SYSCALL_BASE + 197) #endif #ifndef __NR_setresuid32 #define __NR_setresuid32 (__NR_SYSCALL_BASE + 208) #define __NR_getresuid32 (__NR_SYSCALL_BASE + 209) #define __NR_setresgid32 (__NR_SYSCALL_BASE + 210) #define __NR_getresgid32 (__NR_SYSCALL_BASE + 211) #endif #ifndef __NR_setfsuid32 #define __NR_setfsuid32 (__NR_SYSCALL_BASE + 215) #define __NR_setfsgid32 (__NR_SYSCALL_BASE + 216) #endif #ifndef __NR_getdents64 #define __NR_getdents64 (__NR_SYSCALL_BASE + 217) #endif #ifndef __NR_gettid #define __NR_gettid (__NR_SYSCALL_BASE + 224) #endif #ifndef __NR_readahead #define __NR_readahead (__NR_SYSCALL_BASE + 225) #endif #ifndef __NR_setxattr #define __NR_setxattr (__NR_SYSCALL_BASE + 226) #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr (__NR_SYSCALL_BASE + 227) #endif #ifndef __NR_getxattr #define __NR_getxattr (__NR_SYSCALL_BASE + 229) #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr (__NR_SYSCALL_BASE + 230) #endif #ifndef __NR_listxattr #define __NR_listxattr (__NR_SYSCALL_BASE + 232) #endif #ifndef __NR_llistxattr #define __NR_llistxattr (__NR_SYSCALL_BASE + 233) #endif #ifndef __NR_tkill #define __NR_tkill (__NR_SYSCALL_BASE + 238) #endif #ifndef __NR_futex #define __NR_futex (__NR_SYSCALL_BASE + 240) #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity (__NR_SYSCALL_BASE + 241) #define __NR_sched_getaffinity (__NR_SYSCALL_BASE + 242) #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address (__NR_SYSCALL_BASE + 256) #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime (__NR_SYSCALL_BASE + 263) #endif #ifndef __NR_clock_getres #define __NR_clock_getres (__NR_SYSCALL_BASE + 264) #endif #ifndef __NR_statfs64 #define __NR_statfs64 (__NR_SYSCALL_BASE + 266) #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 (__NR_SYSCALL_BASE + 267) #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set (__NR_SYSCALL_BASE + 314) #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get (__NR_SYSCALL_BASE + 315) #endif #ifndef __NR_move_pages #define __NR_move_pages (__NR_SYSCALL_BASE + 344) #endif #ifndef __NR_getcpu #define __NR_getcpu (__NR_SYSCALL_BASE + 345) #endif /* End of ARM 3/EABI definitions */ #elif defined(__x86_64__) #ifndef __NR_pread64 #define __NR_pread64 17 #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 18 #endif #ifndef __NR_setresuid #define __NR_setresuid 117 #define __NR_getresuid 118 #define __NR_setresgid 119 #define __NR_getresgid 120 #endif #ifndef __NR_quotactl #define __NR_quotactl 179 #endif #ifndef __NR_gettid #define __NR_gettid 186 #endif #ifndef __NR_readahead #define __NR_readahead 187 #endif #ifndef __NR_setxattr #define __NR_setxattr 188 #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr 189 #endif #ifndef __NR_getxattr #define __NR_getxattr 191 #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr 192 #endif #ifndef __NR_listxattr #define __NR_listxattr 194 #endif #ifndef __NR_llistxattr #define __NR_llistxattr 195 #endif #ifndef __NR_tkill #define __NR_tkill 200 #endif #ifndef __NR_futex #define __NR_futex 202 #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity 203 #define __NR_sched_getaffinity 204 #endif #ifndef __NR_getdents64 #define __NR_getdents64 217 #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address 218 #endif #ifndef __NR_fadvise64 #define __NR_fadvise64 221 #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime 228 #endif #ifndef __NR_clock_getres #define __NR_clock_getres 229 #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set 251 #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get 252 #endif #ifndef __NR_openat #define __NR_openat 257 #endif #ifndef __NR_newfstatat #define __NR_newfstatat 262 #endif #ifndef __NR_unlinkat #define __NR_unlinkat 263 #endif #ifndef __NR_move_pages #define __NR_move_pages 279 #endif #ifndef __NR_fallocate #define __NR_fallocate 285 #endif /* End of x86-64 definitions */ #elif defined(__mips__) #if _MIPS_SIM == _MIPS_SIM_ABI32 #ifndef __NR_setresuid #define __NR_setresuid (__NR_Linux + 185) #define __NR_getresuid (__NR_Linux + 186) #define __NR_setresgid (__NR_Linux + 190) #define __NR_getresgid (__NR_Linux + 191) #endif #ifndef __NR_rt_sigaction #define __NR_rt_sigreturn (__NR_Linux + 193) #define __NR_rt_sigaction (__NR_Linux + 194) #define __NR_rt_sigprocmask (__NR_Linux + 195) #define __NR_rt_sigpending (__NR_Linux + 196) #define __NR_rt_sigsuspend (__NR_Linux + 199) #endif #ifndef __NR_pread64 #define __NR_pread64 (__NR_Linux + 200) #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 (__NR_Linux + 201) #endif #ifndef __NR_stat64 #define __NR_stat64 (__NR_Linux + 213) #endif #ifndef __NR_fstat64 #define __NR_fstat64 (__NR_Linux + 215) #endif #ifndef __NR_getdents64 #define __NR_getdents64 (__NR_Linux + 219) #endif #ifndef __NR_gettid #define __NR_gettid (__NR_Linux + 222) #endif #ifndef __NR_readahead #define __NR_readahead (__NR_Linux + 223) #endif #ifndef __NR_setxattr #define __NR_setxattr (__NR_Linux + 224) #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr (__NR_Linux + 225) #endif #ifndef __NR_getxattr #define __NR_getxattr (__NR_Linux + 227) #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr (__NR_Linux + 228) #endif #ifndef __NR_listxattr #define __NR_listxattr (__NR_Linux + 230) #endif #ifndef __NR_llistxattr #define __NR_llistxattr (__NR_Linux + 231) #endif #ifndef __NR_tkill #define __NR_tkill (__NR_Linux + 236) #endif #ifndef __NR_futex #define __NR_futex (__NR_Linux + 238) #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity (__NR_Linux + 239) #define __NR_sched_getaffinity (__NR_Linux + 240) #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address (__NR_Linux + 252) #endif #ifndef __NR_statfs64 #define __NR_statfs64 (__NR_Linux + 255) #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 (__NR_Linux + 256) #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime (__NR_Linux + 263) #endif #ifndef __NR_clock_getres #define __NR_clock_getres (__NR_Linux + 264) #endif #ifndef __NR_openat #define __NR_openat (__NR_Linux + 288) #endif #ifndef __NR_fstatat #define __NR_fstatat (__NR_Linux + 293) #endif #ifndef __NR_unlinkat #define __NR_unlinkat (__NR_Linux + 294) #endif #ifndef __NR_move_pages #define __NR_move_pages (__NR_Linux + 308) #endif #ifndef __NR_getcpu #define __NR_getcpu (__NR_Linux + 312) #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set (__NR_Linux + 314) #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get (__NR_Linux + 315) #endif /* End of MIPS (old 32bit API) definitions */ #elif _MIPS_SIM == _MIPS_SIM_ABI64 #ifndef __NR_pread64 #define __NR_pread64 (__NR_Linux + 16) #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 (__NR_Linux + 17) #endif #ifndef __NR_setresuid #define __NR_setresuid (__NR_Linux + 115) #define __NR_getresuid (__NR_Linux + 116) #define __NR_setresgid (__NR_Linux + 117) #define __NR_getresgid (__NR_Linux + 118) #endif #ifndef __NR_gettid #define __NR_gettid (__NR_Linux + 178) #endif #ifndef __NR_readahead #define __NR_readahead (__NR_Linux + 179) #endif #ifndef __NR_setxattr #define __NR_setxattr (__NR_Linux + 180) #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr (__NR_Linux + 181) #endif #ifndef __NR_getxattr #define __NR_getxattr (__NR_Linux + 183) #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr (__NR_Linux + 184) #endif #ifndef __NR_listxattr #define __NR_listxattr (__NR_Linux + 186) #endif #ifndef __NR_llistxattr #define __NR_llistxattr (__NR_Linux + 187) #endif #ifndef __NR_tkill #define __NR_tkill (__NR_Linux + 192) #endif #ifndef __NR_futex #define __NR_futex (__NR_Linux + 194) #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity (__NR_Linux + 195) #define __NR_sched_getaffinity (__NR_Linux + 196) #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address (__NR_Linux + 212) #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime (__NR_Linux + 222) #endif #ifndef __NR_clock_getres #define __NR_clock_getres (__NR_Linux + 223) #endif #ifndef __NR_openat #define __NR_openat (__NR_Linux + 247) #endif #ifndef __NR_fstatat #define __NR_fstatat (__NR_Linux + 252) #endif #ifndef __NR_unlinkat #define __NR_unlinkat (__NR_Linux + 253) #endif #ifndef __NR_move_pages #define __NR_move_pages (__NR_Linux + 267) #endif #ifndef __NR_getcpu #define __NR_getcpu (__NR_Linux + 271) #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set (__NR_Linux + 273) #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get (__NR_Linux + 274) #endif /* End of MIPS (64bit API) definitions */ #else #ifndef __NR_setresuid #define __NR_setresuid (__NR_Linux + 115) #define __NR_getresuid (__NR_Linux + 116) #define __NR_setresgid (__NR_Linux + 117) #define __NR_getresgid (__NR_Linux + 118) #endif #ifndef __NR_gettid #define __NR_gettid (__NR_Linux + 178) #endif #ifndef __NR_readahead #define __NR_readahead (__NR_Linux + 179) #endif #ifndef __NR_setxattr #define __NR_setxattr (__NR_Linux + 180) #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr (__NR_Linux + 181) #endif #ifndef __NR_getxattr #define __NR_getxattr (__NR_Linux + 183) #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr (__NR_Linux + 184) #endif #ifndef __NR_listxattr #define __NR_listxattr (__NR_Linux + 186) #endif #ifndef __NR_llistxattr #define __NR_llistxattr (__NR_Linux + 187) #endif #ifndef __NR_tkill #define __NR_tkill (__NR_Linux + 192) #endif #ifndef __NR_futex #define __NR_futex (__NR_Linux + 194) #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity (__NR_Linux + 195) #define __NR_sched_getaffinity (__NR_Linux + 196) #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address (__NR_Linux + 213) #endif #ifndef __NR_statfs64 #define __NR_statfs64 (__NR_Linux + 217) #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 (__NR_Linux + 218) #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime (__NR_Linux + 226) #endif #ifndef __NR_clock_getres #define __NR_clock_getres (__NR_Linux + 227) #endif #ifndef __NR_openat #define __NR_openat (__NR_Linux + 251) #endif #ifndef __NR_fstatat #define __NR_fstatat (__NR_Linux + 256) #endif #ifndef __NR_unlinkat #define __NR_unlinkat (__NR_Linux + 257) #endif #ifndef __NR_move_pages #define __NR_move_pages (__NR_Linux + 271) #endif #ifndef __NR_getcpu #define __NR_getcpu (__NR_Linux + 275) #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set (__NR_Linux + 277) #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get (__NR_Linux + 278) #endif /* End of MIPS (new 32bit API) definitions */ #endif /* End of MIPS definitions */ #elif defined(__PPC__) #ifndef __NR_setfsuid #define __NR_setfsuid 138 #define __NR_setfsgid 139 #endif #ifndef __NR_setresuid #define __NR_setresuid 164 #define __NR_getresuid 165 #define __NR_setresgid 169 #define __NR_getresgid 170 #endif #ifndef __NR_rt_sigaction #define __NR_rt_sigreturn 172 #define __NR_rt_sigaction 173 #define __NR_rt_sigprocmask 174 #define __NR_rt_sigpending 175 #define __NR_rt_sigsuspend 178 #endif #ifndef __NR_pread64 #define __NR_pread64 179 #endif #ifndef __NR_pwrite64 #define __NR_pwrite64 180 #endif #ifndef __NR_ugetrlimit #define __NR_ugetrlimit 190 #endif #ifndef __NR_readahead #define __NR_readahead 191 #endif #ifndef __NR_stat64 #define __NR_stat64 195 #endif #ifndef __NR_fstat64 #define __NR_fstat64 197 #endif #ifndef __NR_getdents64 #define __NR_getdents64 202 #endif #ifndef __NR_gettid #define __NR_gettid 207 #endif #ifndef __NR_tkill #define __NR_tkill 208 #endif #ifndef __NR_setxattr #define __NR_setxattr 209 #endif #ifndef __NR_lsetxattr #define __NR_lsetxattr 210 #endif #ifndef __NR_getxattr #define __NR_getxattr 212 #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr 213 #endif #ifndef __NR_listxattr #define __NR_listxattr 215 #endif #ifndef __NR_llistxattr #define __NR_llistxattr 216 #endif #ifndef __NR_futex #define __NR_futex 221 #endif #ifndef __NR_sched_setaffinity #define __NR_sched_setaffinity 222 #define __NR_sched_getaffinity 223 #endif #ifndef __NR_set_tid_address #define __NR_set_tid_address 232 #endif #ifndef __NR_clock_gettime #define __NR_clock_gettime 246 #endif #ifndef __NR_clock_getres #define __NR_clock_getres 247 #endif #ifndef __NR_statfs64 #define __NR_statfs64 252 #endif #ifndef __NR_fstatfs64 #define __NR_fstatfs64 253 #endif #ifndef __NR_fadvise64_64 #define __NR_fadvise64_64 254 #endif #ifndef __NR_ioprio_set #define __NR_ioprio_set 273 #endif #ifndef __NR_ioprio_get #define __NR_ioprio_get 274 #endif #ifndef __NR_openat #define __NR_openat 286 #endif #ifndef __NR_fstatat64 #define __NR_fstatat64 291 #endif #ifndef __NR_unlinkat #define __NR_unlinkat 292 #endif #ifndef __NR_move_pages #define __NR_move_pages 301 #endif #ifndef __NR_getcpu #define __NR_getcpu 302 #endif /* End of powerpc defininitions */ #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 SYS_ERRNO #else #define LSS_ERRNO errno #endif #undef LSS_INLINE #ifdef SYS_INLINE #define LSS_INLINE SYS_INLINE #else #define LSS_INLINE static 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) sys_##name #elif defined(SYS_PREFIX) && SYS_PREFIX < 0 #define LSS_NAME(name) name #elif defined(SYS_PREFIX) && SYS_PREFIX == 0 #define LSS_NAME(name) sys0_##name #elif defined(SYS_PREFIX) && SYS_PREFIX == 1 #define LSS_NAME(name) sys1_##name #elif defined(SYS_PREFIX) && SYS_PREFIX == 2 #define LSS_NAME(name) sys2_##name #elif defined(SYS_PREFIX) && SYS_PREFIX == 3 #define LSS_NAME(name) sys3_##name #elif defined(SYS_PREFIX) && SYS_PREFIX == 4 #define LSS_NAME(name) sys4_##name #elif defined(SYS_PREFIX) && SYS_PREFIX == 5 #define LSS_NAME(name) sys5_##name #elif defined(SYS_PREFIX) && SYS_PREFIX == 6 #define LSS_NAME(name) sys6_##name #elif defined(SYS_PREFIX) && SYS_PREFIX == 7 #define LSS_NAME(name) sys7_##name #elif defined(SYS_PREFIX) && SYS_PREFIX == 8 #define LSS_NAME(name) sys8_##name #elif defined(SYS_PREFIX) && SYS_PREFIX == 9 #define LSS_NAME(name) sys9_##name #endif #undef LSS_RETURN #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) \ || defined(__ARM_EABI__)) /* 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) \ do { \ if ((unsigned long)(res) >= (unsigned long)(-4095)) { \ LSS_ERRNO = -(res); \ res = -1; \ } \ return (type) (res); \ } while (0) #elif defined(__mips__) /* On MIPS, failing system calls return -1, and set errno in a * separate CPU register. */ #define LSS_RETURN(type, res, err) \ do { \ if (err) { \ unsigned long __errnovalue = (res); \ LSS_ERRNO = __errnovalue; \ res = -1; \ } \ return (type) (res); \ } while (0) #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(type, res, err) \ do { \ if (err & 0x10000000 ) { \ LSS_ERRNO = (res); \ res = -1; \ } \ return (type) (res); \ } while (0) #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 ".bss\n" \ ".align 8\n" \ ".globl "SYS_SYSCALL_ENTRYPOINT"\n" \ ".common "SYS_SYSCALL_ENTRYPOINT",8,8\n" \ ".previous\n" \ /* Check the SYS_SYSCALL_ENTRYPOINT vector */ \ "push %%eax\n" \ "call 10000f\n" \ "10000:pop %%eax\n" \ "add $_GLOBAL_OFFSET_TABLE_+[.-10000b], %%eax\n" \ "mov "SYS_SYSCALL_ENTRYPOINT"@GOT(%%eax), %%eax\n"\ "mov 0(%%eax), %%eax\n" \ "test %%eax, %%eax\n" \ "jz 10002f\n" \ "push %%eax\n" \ "call 10001f\n" \ "10001:pop %%eax\n" \ "add $(10003f-10001b), %%eax\n" \ "xchg 4(%%esp), %%eax\n" \ "ret\n" \ "10002:pop %%eax\n" \ "int $0x80\n" \ "10003:\n" #else #define LSS_ENTRYPOINT "int $0x80\n" #endif #undef LSS_BODY #define LSS_BODY(type,args...) \ long __res; \ __asm__ __volatile__("push %%ebx\n" \ "movl %2,%%ebx\n" \ LSS_ENTRYPOINT \ "pop %%ebx" \ args \ : "esp", "memory"); \ LSS_RETURN(type,__res) #undef _syscall0 #define _syscall0(type,name) \ type LSS_NAME(name)(void) { \ long __res; \ __asm__ volatile(LSS_ENTRYPOINT \ : "=a" (__res) \ : "0" (__NR_##name) \ : "esp", "memory"); \ LSS_RETURN(type,__res); \ } #undef _syscall1 #define _syscall1(type,name,type1,arg1) \ type LSS_NAME(name)(type1 arg1) { \ LSS_BODY(type, \ : "=a" (__res) \ : "0" (__NR_##name), "ri" ((long)(arg1))); \ } #undef _syscall2 #define _syscall2(type,name,type1,arg1,type2,arg2) \ type LSS_NAME(name)(type1 arg1,type2 arg2) { \ LSS_BODY(type, \ : "=a" (__res) \ : "0" (__NR_##name),"ri" ((long)(arg1)), "c" ((long)(arg2))); \ } #undef _syscall3 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ type LSS_NAME(name)(type1 arg1,type2 arg2,type3 arg3) { \ LSS_BODY(type, \ : "=a" (__res) \ : "0" (__NR_##name), "ri" ((long)(arg1)), "c" ((long)(arg2)), \ "d" ((long)(arg3))); \ } #undef _syscall4 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \ LSS_BODY(type, \ : "=a" (__res) \ : "0" (__NR_##name), "ri" ((long)(arg1)), "c" ((long)(arg2)), \ "d" ((long)(arg3)),"S" ((long)(arg4))); \ } #undef _syscall5 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5) { \ long __res; \ __asm__ __volatile__("push %%ebx\n" \ "movl %2,%%ebx\n" \ "movl %1,%%eax\n" \ LSS_ENTRYPOINT \ "pop %%ebx" \ : "=a" (__res) \ : "i" (__NR_##name), "ri" ((long)(arg1)), \ "c" ((long)(arg2)), "d" ((long)(arg3)), \ "S" ((long)(arg4)), "D" ((long)(arg5)) \ : "esp", "memory"); \ LSS_RETURN(type,__res); \ } #undef _syscall6 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5,type6,arg6) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5, type6 arg6) { \ long __res; \ struct { long __a1; long __a6; } __s = { (long)arg1, (long) arg6 }; \ __asm__ __volatile__("push %%ebp\n" \ "push %%ebx\n" \ "movl 4(%2),%%ebp\n" \ "movl 0(%2), %%ebx\n" \ "movl %1,%%eax\n" \ LSS_ENTRYPOINT \ "pop %%ebx\n" \ "pop %%ebp" \ : "=a" (__res) \ : "i" (__NR_##name), "0" ((long)(&__s)), \ "c" ((long)(arg2)), "d" ((long)(arg3)), \ "S" ((long)(arg4)), "D" ((long)(arg5)) \ : "esp", "memory"); \ LSS_RETURN(type,__res); \ } 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) : "esp", "memory", "ecx", "edx", "esi", "edi"); LSS_RETURN(int, __res); } #define __NR__fadvise64_64 __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); } #define __NR__fallocate __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]); } 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 \ ".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), %%rcx\n" \ "mov 0(%%rcx), %%rcx\n" \ "test %%rcx, %%rcx\n" \ "jz 10001f\n" \ "call *%%rcx\n" \ "jmp 10002f\n" \ "10001:syscall\n" \ "10002:\n" #else #define LSS_ENTRYPOINT "syscall\n" #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) ((uint64_t)(uintptr_t)(a)) #undef _LSS_RETURN #define _LSS_RETURN(type, res, cast) \ do { \ if ((uint64_t)(res) >= (uint64_t)(-4095)) { \ LSS_ERRNO = -(res); \ res = -1; \ } \ return (type)(cast)(res); \ } while (0) #undef LSS_RETURN #define LSS_RETURN(type, res) _LSS_RETURN(type, res, uintptr_t) #undef _LSS_BODY #define _LSS_BODY(nr, type, name, cast, ...) \ long long __res; \ __asm__ __volatile__(LSS_BODY_ASM##nr LSS_ENTRYPOINT \ : "=a" (__res) \ : "0" (__NR_##name) LSS_BODY_ARG##nr(__VA_ARGS__) \ : LSS_BODY_CLOBBER##nr "r11", "rcx", "memory"); \ _LSS_RETURN(type, __res, cast) #undef LSS_BODY #define LSS_BODY(nr, type, name, args...) \ _LSS_BODY(nr, type, name, uintptr_t, ## 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 LSS_BODY_ASM0 #define LSS_BODY_ASM2 LSS_BODY_ASM1 #define LSS_BODY_ASM3 LSS_BODY_ASM2 #define LSS_BODY_ASM4 LSS_BODY_ASM3 "movq %5,%%r10;" #define LSS_BODY_ASM5 LSS_BODY_ASM4 "movq %6,%%r8;" #define LSS_BODY_ASM6 LSS_BODY_ASM5 "movq %7,%%r9;" #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 LSS_BODY_CLOBBER0 #define LSS_BODY_CLOBBER2 LSS_BODY_CLOBBER1 #define LSS_BODY_CLOBBER3 LSS_BODY_CLOBBER2 #define LSS_BODY_CLOBBER4 LSS_BODY_CLOBBER3 "r10", #define LSS_BODY_CLOBBER5 LSS_BODY_CLOBBER4 "r8", #define LSS_BODY_CLOBBER6 LSS_BODY_CLOBBER5 "r9", #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) \ LSS_BODY_ARG0(), "D" (arg1) #define LSS_BODY_ARG2(arg1, arg2) \ LSS_BODY_ARG1(arg1), "S" (arg2) #define LSS_BODY_ARG3(arg1, arg2, arg3) \ LSS_BODY_ARG2(arg1, arg2), "d" (arg3) #define LSS_BODY_ARG4(arg1, arg2, arg3, arg4) \ LSS_BODY_ARG3(arg1, arg2, arg3), "r" (arg4) #define LSS_BODY_ARG5(arg1, arg2, arg3, arg4, arg5) \ LSS_BODY_ARG4(arg1, arg2, arg3, arg4), "r" (arg5) #define LSS_BODY_ARG6(arg1, arg2, arg3, arg4, arg5, arg6) \ LSS_BODY_ARG5(arg1, arg2, arg3, arg4, arg5), "r" (arg6) #undef _syscall0 #define _syscall0(type,name) \ type LSS_NAME(name)(void) { \ LSS_BODY(0, type, name); \ } #undef _syscall1 #define _syscall1(type,name,type1,arg1) \ type LSS_NAME(name)(type1 arg1) { \ LSS_BODY(1, type, name, LSS_SYSCALL_ARG(arg1)); \ } #undef _syscall2 #define _syscall2(type,name,type1,arg1,type2,arg2) \ type LSS_NAME(name)(type1 arg1, type2 arg2) { \ LSS_BODY(2, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2));\ } #undef _syscall3 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \ LSS_BODY(3, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \ LSS_SYSCALL_ARG(arg3)); \ } #undef _syscall4 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \ LSS_BODY(4, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \ LSS_SYSCALL_ARG(arg3), LSS_SYSCALL_ARG(arg4));\ } #undef _syscall5 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5) { \ LSS_BODY(5, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \ LSS_SYSCALL_ARG(arg3), LSS_SYSCALL_ARG(arg4), \ LSS_SYSCALL_ARG(arg5)); \ } #undef _syscall6 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5,type6,arg6) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5, type6 arg6) { \ LSS_BODY(6, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \ LSS_SYSCALL_ARG(arg3), LSS_SYSCALL_ARG(arg4), \ LSS_SYSCALL_ARG(arg5), LSS_SYSCALL_ARG(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) { long long __res; { __asm__ __volatile__(/* if (fn == NULL) * return -EINVAL; */ "testq %4,%4\n" "jz 1f\n" /* if (child_stack == NULL) * return -EINVAL; */ "testq %5,%5\n" "jz 1f\n" /* childstack -= 2*sizeof(void *); */ "subq $16,%5\n" /* Push "arg" and "fn" onto the stack that will be * used by the child. */ "movq %7,8(%5)\n" "movq %4,0(%5)\n" /* %rax = syscall(%rax = __NR_clone, * %rdi = flags, * %rsi = child_stack, * %rdx = parent_tidptr, * %r8 = new_tls, * %r10 = child_tidptr) */ "movq %2,%%rax\n" "movq %9,%%r8\n" "movq %10,%%r10\n" LSS_ENTRYPOINT /* if (%rax != 0) * return; */ "testq %%rax,%%rax\n" "jnz 1f\n" /* In the child. Terminate frame pointer chain. */ "xorq %%rbp,%%rbp\n" /* Call "fn(arg)". */ "popq %%rax\n" "popq %%rdi\n" "call *%%rax\n" /* Call _exit(%ebx). */ "movq %%rax,%%rdi\n" "movq %3,%%rax\n" LSS_ENTRYPOINT /* Return to parent. */ "1:\n" : "=a" (__res) : "0"(-EINVAL), "i"(__NR_clone), "i"(__NR_exit), "r"(LSS_SYSCALL_ARG(fn)), "S"(LSS_SYSCALL_ARG(child_stack)), "D"(LSS_SYSCALL_ARG(flags)), "r"(LSS_SYSCALL_ARG(arg)), "d"(LSS_SYSCALL_ARG(parent_tidptr)), "r"(LSS_SYSCALL_ARG(newtls)), "r"(LSS_SYSCALL_ARG(child_tidptr)) : "rsp", "memory", "r8", "r10", "r11", "rcx"); } LSS_RETURN(int, __res); } LSS_INLINE _syscall2(int, arch_prctl, int, c, void *, a) /* 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) { LSS_BODY(4, int, fadvise64, LSS_SYSCALL_ARG(fd), (uint64_t)(offset), (uint64_t)(len), LSS_SYSCALL_ARG(advice)); } LSS_INLINE void (*LSS_NAME(restore_rt)(void))(void) { /* On x86-64, 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. */ long long res; __asm__ __volatile__("jmp 2f\n" ".align 16\n" "1:movq %1,%%rax\n" LSS_ENTRYPOINT "2:leaq 1b(%%rip),%0\n" : "=r" (res) : "i" (__NR_rt_sigreturn)); return (void (*)(void))(uintptr_t)res; } #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(r,a) register long __r##r __asm__("r"#r) = (long)a #undef LSS_BODY #define LSS_BODY(type,name,args...) \ register long __res_r0 __asm__("r0"); \ long __res; \ __asm__ __volatile__ (__syscall(name) \ : "=r"(__res_r0) : args : "lr", "memory"); \ __res = __res_r0; \ LSS_RETURN(type, __res) #undef _syscall0 #define _syscall0(type, name) \ type LSS_NAME(name)(void) { \ LSS_BODY(type, name); \ } #undef _syscall1 #define _syscall1(type, name, type1, arg1) \ type LSS_NAME(name)(type1 arg1) { \ LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0)); \ } #undef _syscall2 #define _syscall2(type, name, type1, arg1, type2, arg2) \ type LSS_NAME(name)(type1 arg1, type2 arg2) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1)); \ } #undef _syscall3 #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2)); \ } #undef _syscall4 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \ LSS_REG(3, arg4); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3)); \ } #undef _syscall5 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \ LSS_REG(3, arg4); LSS_REG(4, arg5); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \ "r"(__r4)); \ } #undef _syscall6 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5,type6,arg6) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5, type6 arg6) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \ LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \ "r"(__r4), "r"(__r5)); \ } 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(r,a) register long __r##r __asm__("r"#r) = (long)a #undef LSS_BODY #define LSS_BODY(type,name,args...) \ register long __res_r0 __asm__("r0"); \ long __res; \ __asm__ __volatile__ ("push {r7}\n" \ "mov r7, %1\n" \ "swi 0x0\n" \ "pop {r7}\n" \ : "=r"(__res_r0) \ : "i"(__NR_##name) , ## args \ : "lr", "memory"); \ __res = __res_r0; \ LSS_RETURN(type, __res) #undef _syscall0 #define _syscall0(type, name) \ type LSS_NAME(name)(void) { \ LSS_BODY(type, name); \ } #undef _syscall1 #define _syscall1(type, name, type1, arg1) \ type LSS_NAME(name)(type1 arg1) { \ LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0)); \ } #undef _syscall2 #define _syscall2(type, name, type1, arg1, type2, arg2) \ type LSS_NAME(name)(type1 arg1, type2 arg2) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1)); \ } #undef _syscall3 #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2)); \ } #undef _syscall4 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \ LSS_REG(3, arg4); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3)); \ } #undef _syscall5 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \ LSS_REG(3, arg4); LSS_REG(4, arg5); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \ "r"(__r4)); \ } #undef _syscall6 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5,type6,arg6) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5, type6 arg6) { \ LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3); \ LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6); \ LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3), \ "r"(__r4), "r"(__r5)); \ } 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; */ #ifdef __thumb2__ "push {r7}\n" #endif "cmp %2,#0\n" "it ne\n" "cmpne %3,#0\n" "it eq\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) */ "mov r7, %9\n" "swi 0x0\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" /* When compiling for Thumb-2 the "MOV LR,PC" here * won't work because it loads PC+4 into LR, * whereas the LDR is a 4-byte instruction. * This results in the child thread always * crashing with an "Illegal Instruction" when it * returned into the middle of the LDR instruction * The instruction sequence used instead was * recommended by * "https://wiki.edubuntu.org/ARM/Thumb2PortingHowto#Quick_Reference". */ #ifdef __thumb2__ "ldr r7,[sp]\n" "blx r7\n" #else "mov lr,pc\n" "ldr pc,[sp]\n" #endif /* Call _exit(%r0). */ "mov r7, %10\n" "swi 0x0\n" "1:\n" #ifdef __thumb2__ "pop {r7}" #endif : "=r" (__res) : "i"(-EINVAL), "r"(fn), "r"(__stack), "r"(__flags), "r"(arg), "r"(__ptid), "r"(__tls), "r"(__ctid), "i"(__NR_clone), "i"(__NR_exit) #ifdef __thumb2__ : "cc", "lr", "memory"); #else : "cc", "r7", "lr", "memory"); #endif } LSS_RETURN(int, __res); } #elif defined(__mips__) #undef LSS_REG #define LSS_REG(r,a) register unsigned long __r##r __asm__("$"#r) = \ (unsigned long)(a) #undef LSS_BODY #define LSS_BODY(type,name,r7,...) \ register unsigned long __v0 __asm__("$2") = __NR_##name; \ __asm__ __volatile__ ("syscall\n" \ : "+r"(__v0), r7 (__r7) \ : "0"(__v0), ##__VA_ARGS__ \ : "$8", "$9", "$10", "$11", "$12", \ "$13", "$14", "$15", "$24", "$25", \ "memory"); \ LSS_RETURN(type, __v0, __r7) #undef _syscall0 #define _syscall0(type, name) \ type LSS_NAME(name)(void) { \ register unsigned long __r7 __asm__("$7"); \ LSS_BODY(type, name, "=r"); \ } #undef _syscall1 #define _syscall1(type, name, type1, arg1) \ type LSS_NAME(name)(type1 arg1) { \ register unsigned long __r7 __asm__("$7"); \ LSS_REG(4, arg1); LSS_BODY(type, name, "=r", "r"(__r4)); \ } #undef _syscall2 #define _syscall2(type, name, type1, arg1, type2, arg2) \ type LSS_NAME(name)(type1 arg1, type2 arg2) { \ register unsigned long __r7 __asm__("$7"); \ LSS_REG(4, arg1); LSS_REG(5, arg2); \ LSS_BODY(type, name, "=r", "r"(__r4), "r"(__r5)); \ } #undef _syscall3 #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \ register unsigned long __r7 __asm__("$7"); \ LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \ LSS_BODY(type, name, "=r", "r"(__r4), "r"(__r5), "r"(__r6)); \ } #undef _syscall4 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \ LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \ LSS_REG(7, arg4); \ LSS_BODY(type, name, "+r", "r"(__r4), "r"(__r5), "r"(__r6)); \ } #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(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5) { \ LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \ LSS_REG(7, arg4); \ register unsigned long __v0 __asm__("$2") = __NR_##name; \ __asm__ __volatile__ (".set noreorder\n" \ "subu $29, 32\n" \ "sw %5, 16($29)\n" \ "syscall\n" \ "addiu $29, 32\n" \ ".set reorder\n" \ : "+r"(__v0), "+r" (__r7) \ : "r"(__r4), "r"(__r5), \ "r"(__r6), "r" ((unsigned long)arg5) \ : "$8", "$9", "$10", "$11", "$12", \ "$13", "$14", "$15", "$24", "$25", \ "memory"); \ LSS_RETURN(type, __v0, __r7); \ } #else #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5) { \ LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \ LSS_REG(7, arg4); LSS_REG(8, arg5); \ LSS_BODY(type, name, "+r", "r"(__r4), "r"(__r5), "r"(__r6), \ "r"(__r8)); \ } #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(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5,type6,arg6) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5, type6 arg6) { \ LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \ LSS_REG(7, arg4); \ register unsigned long __v0 __asm__("$2") = __NR_##name; \ __asm__ __volatile__ (".set noreorder\n" \ "subu $29, 32\n" \ "sw %5, 16($29)\n" \ "sw %6, 20($29)\n" \ "syscall\n" \ "addiu $29, 32\n" \ ".set reorder\n" \ : "+r"(__v0), "+r" (__r7) \ : "r"(__r4), "r"(__r5), \ "r"(__r6), "r" ((unsigned long)arg5), \ "r" ((unsigned long)arg6) \ : "$8", "$9", "$10", "$11", "$12", \ "$13", "$14", "$15", "$24", "$25", \ "memory"); \ LSS_RETURN(type, __v0, __r7); \ } #else #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ type5,arg5,type6,arg6) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5,type6 arg6) { \ LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3); \ LSS_REG(7, arg4); LSS_REG(8, arg5); LSS_REG(9, arg6); \ LSS_BODY(type, name, "+r", "r"(__r4), "r"(__r5), "r"(__r6), \ "r"(__r8), "r"(__r9)); \ } #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"); 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; */ "li %0,%2\n" "beqz %5,1f\n" "beqz %6,1f\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 %6,32\n" "sw %5,0(%6)\n" "sw %8,4(%6)\n" #elif _MIPS_SIM == _MIPS_SIM_NABI32 "sub %6,32\n" "sw %5,0(%6)\n" "sw %8,8(%6)\n" #else "dsubu %6,32\n" "sd %5,0(%6)\n" "sd %8,8(%6)\n" #endif /* $7 = syscall($4 = flags, * $5 = child_stack, * $6 = parent_tidptr, * $7 = newtls, * $8 = child_tidptr) */ "li $2,%3\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,%4\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"(-EINVAL), "i"(__NR_clone), "i"(__NR_exit), "r"(fn), "r"(__stack), "r"(__flags), "r"(arg), "r"(__ptid), "r"(__r7), "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(name, dummy...) \ __sc_0 = __NR_##name #undef LSS_LOADARGS_1 #define LSS_LOADARGS_1(name, arg1) \ LSS_LOADARGS_0(name); \ __sc_3 = (unsigned long) (arg1) #undef LSS_LOADARGS_2 #define LSS_LOADARGS_2(name, arg1, arg2) \ LSS_LOADARGS_1(name, arg1); \ __sc_4 = (unsigned long) (arg2) #undef LSS_LOADARGS_3 #define LSS_LOADARGS_3(name, arg1, arg2, arg3) \ LSS_LOADARGS_2(name, arg1, arg2); \ __sc_5 = (unsigned long) (arg3) #undef LSS_LOADARGS_4 #define LSS_LOADARGS_4(name, arg1, arg2, arg3, arg4) \ LSS_LOADARGS_3(name, arg1, arg2, arg3); \ __sc_6 = (unsigned long) (arg4) #undef LSS_LOADARGS_5 #define LSS_LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5) \ LSS_LOADARGS_4(name, arg1, arg2, arg3, arg4); \ __sc_7 = (unsigned long) (arg5) #undef LSS_LOADARGS_6 #define LSS_LOADARGS_6(name, arg1, arg2, arg3, arg4, arg5, arg6) \ LSS_LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5); \ __sc_8 = (unsigned long) (arg6) #undef LSS_ASMINPUT_0 #define LSS_ASMINPUT_0 "0" (__sc_0) #undef LSS_ASMINPUT_1 #define LSS_ASMINPUT_1 LSS_ASMINPUT_0, "1" (__sc_3) #undef LSS_ASMINPUT_2 #define LSS_ASMINPUT_2 LSS_ASMINPUT_1, "2" (__sc_4) #undef LSS_ASMINPUT_3 #define LSS_ASMINPUT_3 LSS_ASMINPUT_2, "3" (__sc_5) #undef LSS_ASMINPUT_4 #define LSS_ASMINPUT_4 LSS_ASMINPUT_3, "4" (__sc_6) #undef LSS_ASMINPUT_5 #define LSS_ASMINPUT_5 LSS_ASMINPUT_4, "5" (__sc_7) #undef LSS_ASMINPUT_6 #define LSS_ASMINPUT_6 LSS_ASMINPUT_5, "6" (__sc_8) #undef LSS_BODY #define LSS_BODY(nr, type, name, args...) \ long __sc_ret, __sc_err; \ { \ register unsigned long __sc_0 __asm__ ("r0"); \ register unsigned long __sc_3 __asm__ ("r3"); \ register unsigned long __sc_4 __asm__ ("r4"); \ register unsigned long __sc_5 __asm__ ("r5"); \ register unsigned long __sc_6 __asm__ ("r6"); \ register unsigned long __sc_7 __asm__ ("r7"); \ register unsigned long __sc_8 __asm__ ("r8"); \ \ LSS_LOADARGS_##nr(name, args); \ __asm__ __volatile__ \ ("sc\n\t" \ "mfcr %0" \ : "=&r" (__sc_0), \ "=&r" (__sc_3), "=&r" (__sc_4), \ "=&r" (__sc_5), "=&r" (__sc_6), \ "=&r" (__sc_7), "=&r" (__sc_8) \ : LSS_ASMINPUT_##nr \ : "cr0", "ctr", "memory", \ "r9", "r10", "r11", "r12"); \ __sc_ret = __sc_3; \ __sc_err = __sc_0; \ } \ LSS_RETURN(type, __sc_ret, __sc_err) #undef _syscall0 #define _syscall0(type, name) \ type LSS_NAME(name)(void) { \ LSS_BODY(0, type, name); \ } #undef _syscall1 #define _syscall1(type, name, type1, arg1) \ type LSS_NAME(name)(type1 arg1) { \ LSS_BODY(1, type, name, arg1); \ } #undef _syscall2 #define _syscall2(type, name, type1, arg1, type2, arg2) \ type LSS_NAME(name)(type1 arg1, type2 arg2) { \ LSS_BODY(2, type, name, arg1, arg2); \ } #undef _syscall3 #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \ LSS_BODY(3, type, name, arg1, arg2, arg3); \ } #undef _syscall4 #define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \ type4, arg4) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \ LSS_BODY(4, type, name, arg1, arg2, arg3, arg4); \ } #undef _syscall5 #define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \ type4, arg4, type5, arg5) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5) { \ LSS_BODY(5, type, name, arg1, arg2, arg3, arg4, arg5); \ } #undef _syscall6 #define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \ type4, arg4, type5, arg5, type6, arg6) \ type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ type5 arg5, type6 arg6) { \ LSS_BODY(6, type, name, arg1, arg2, arg3, arg4, arg5, arg6); \ } /* 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); } #endif #define __NR__exit __NR_exit #define __NR__gettid __NR_gettid #define __NR__mremap __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) LSS_INLINE _syscall2(int, dup2, int, s, int, d) 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) LSS_INLINE _syscall0(pid_t, fork) LSS_INLINE _syscall2(int, fstat, int, f, struct kernel_stat*, b) 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) { LSS_BODY(2, int, ftruncate, LSS_SYSCALL_ARG(f), (uint64_t)(l)); } #else LSS_INLINE _syscall2(int, ftruncate, int, f, off_t, l) #endif LSS_INLINE _syscall4(int, futex, int*, a, int, o, int, v, struct kernel_timespec*, t) 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(gid_t, getegid) LSS_INLINE _syscall0(uid_t, geteuid) LSS_INLINE _syscall0(pid_t, getpgrp) LSS_INLINE _syscall0(pid_t, getpid) LSS_INLINE _syscall0(pid_t, getppid) 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(__ARM_EABI__) LSS_INLINE _syscall2(int, getrlimit, int, r, struct kernel_rlimit*, l) #endif LSS_INLINE _syscall1(pid_t, getsid, pid_t, p) LSS_INLINE _syscall0(pid_t, _gettid) 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) { _LSS_BODY(3, off_t, lseek, off_t, LSS_SYSCALL_ARG(f), (uint64_t)(o), LSS_SYSCALL_ARG(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) LSS_INLINE _syscall3(int, open, const char*, p, int, f, int, m) LSS_INLINE _syscall3(int, poll, struct kernel_pollfd*, u, unsigned int, n, int, t) 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) LSS_INLINE _syscall3(int, readlink, const char*, p, char*, b, size_t, s) 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 _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(int, sched_yield) LSS_INLINE _syscall1(long, set_tid_address, int *, t) LSS_INLINE _syscall1(int, setfsgid, gid_t, g) LSS_INLINE _syscall1(int, setfsuid, uid_t, u) LSS_INLINE _syscall1(int, setuid, uid_t, u) LSS_INLINE _syscall1(int, setgid, gid_t, g) LSS_INLINE _syscall2(int, setpgid, pid_t, p, pid_t, g) LSS_INLINE _syscall3(int, setpriority, int, a, int, b, int, p) LSS_INLINE _syscall3(int, setresgid, gid_t, r, gid_t, e, gid_t, s) LSS_INLINE _syscall3(int, setresuid, uid_t, r, uid_t, e, uid_t, s) LSS_INLINE _syscall2(int, setrlimit, int, r, const struct kernel_rlimit*, l) LSS_INLINE _syscall0(pid_t, setsid) 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 LSS_INLINE _syscall2(int, stat, const char*, f, struct kernel_stat*, b) 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) LSS_INLINE _syscall1(int, unlink, const char*, f) 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(__x86_64__) || \ (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI32) LSS_INLINE _syscall3(int, recvmsg, int, s, struct kernel_msghdr*, m, int, f) LSS_INLINE _syscall3(int, sendmsg, int, s, const struct kernel_msghdr*, m, int, f) LSS_INLINE _syscall6(int, sendto, int, s, const void*, m, size_t, l, int, f, const struct kernel_sockaddr*, a, int, t) LSS_INLINE _syscall2(int, shutdown, int, s, int, h) LSS_INLINE _syscall3(int, socket, int, d, int, t, int, p) LSS_INLINE _syscall4(int, socketpair, int, d, int, t, int, p, int*, s) #endif #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) { LSS_BODY(4, int, fallocate, LSS_SYSCALL_ARG(f), LSS_SYSCALL_ARG(mode), (uint64_t)(offset), (uint64_t)(len)); } LSS_INLINE int LSS_NAME(getresgid32)(gid_t *rgid, gid_t *egid, gid_t *sgid) { return LSS_NAME(getresgid)(rgid, egid, sgid); } LSS_INLINE int LSS_NAME(getresuid32)(uid_t *ruid, uid_t *euid, uid_t *suid) { return LSS_NAME(getresuid)(ruid, euid, suid); } /* 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, __off64_t o) { LSS_BODY(6, void*, mmap, LSS_SYSCALL_ARG(s), LSS_SYSCALL_ARG(l), LSS_SYSCALL_ARG(p), LSS_SYSCALL_ARG(f), LSS_SYSCALL_ARG(d), (uint64_t)(o)); } LSS_INLINE _syscall4(int, newfstatat, int, d, const char *, p, struct kernel_stat*, b, int, f) LSS_INLINE int LSS_NAME(setfsgid32)(gid_t gid) { return LSS_NAME(setfsgid)(gid); } LSS_INLINE int LSS_NAME(setfsuid32)(uid_t uid) { return LSS_NAME(setfsuid)(uid); } LSS_INLINE int LSS_NAME(setresgid32)(gid_t rgid, gid_t egid, gid_t sgid) { return LSS_NAME(setresgid)(rgid, egid, sgid); } LSS_INLINE int LSS_NAME(setresuid32)(uid_t ruid, uid_t euid, uid_t suid) { return LSS_NAME(setresuid)(ruid, euid, suid); } LSS_INLINE int LSS_NAME(sigaction)(int signum, const struct kernel_sigaction *act, struct kernel_sigaction *oldact) { /* On x86_64, the kernel requires us to always set our own * SA_RESTORER in order to be able to return from a signal handler. * This function must have a "magic" signature that the "gdb" * (and maybe the kernel?) can recognize. */ if (act != NULL && !(act->sa_flags & SA_RESTORER)) { struct kernel_sigaction a = *act; a.sa_flags |= SA_RESTORER; a.sa_restorer = LSS_NAME(restore_rt)(); return LSS_NAME(rt_sigaction)(signum, &a, oldact, (KERNEL_NSIG+7)/8); } else { return LSS_NAME(rt_sigaction)(signum, act, oldact, (KERNEL_NSIG+7)/8); } } LSS_INLINE int LSS_NAME(sigpending)(struct kernel_sigset_t *set) { return LSS_NAME(rt_sigpending)(set, (KERNEL_NSIG+7)/8); } LSS_INLINE int LSS_NAME(sigprocmask)(int how, const struct kernel_sigset_t *set, struct kernel_sigset_t *oldset) { return LSS_NAME(rt_sigprocmask)(how, set, oldset, (KERNEL_NSIG+7)/8); } LSS_INLINE int LSS_NAME(sigsuspend)(const struct kernel_sigset_t *set) { return LSS_NAME(rt_sigsuspend)(set, (KERNEL_NSIG+7)/8); } #endif #if defined(__x86_64__) || defined(__ARM_ARCH_3__) || \ defined(__ARM_EABI__) || \ (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI32) LSS_INLINE _syscall4(pid_t, wait4, pid_t, p, int*, s, int, o, struct kernel_rusage*, r) LSS_INLINE pid_t LSS_NAME(waitpid)(pid_t pid, int *status, int options){ return LSS_NAME(wait4)(pid, status, options, 0); } #endif #if defined(__i386__) || defined(__x86_64__) LSS_INLINE _syscall4(int, openat, int, d, const char *, p, int, f, int, m) LSS_INLINE _syscall3(int, unlinkat, int, d, const char *, p, int, f) #endif #if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) #define __NR__getresgid32 __NR_getresgid32 #define __NR__getresuid32 __NR_getresuid32 #define __NR__setfsgid32 __NR_setfsgid32 #define __NR__setfsuid32 __NR_setfsuid32 #define __NR__setresgid32 __NR_setresgid32 #define __NR__setresuid32 __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) { memset(&set->sig, 0, sizeof(set->sig)); return 0; } LSS_INLINE int LSS_NAME(sigfillset)(struct kernel_sigset_t *set) { memset(&set->sig, -1, sizeof(set->sig)); return 0; } LSS_INLINE int LSS_NAME(sigaddset)(struct kernel_sigset_t *set, int signum) { if (signum < 1 || signum > (int)(8*sizeof(set->sig))) { LSS_ERRNO = EINVAL; return -1; } else { set->sig[(signum - 1)/(8*sizeof(set->sig[0]))] |= 1UL << ((signum - 1) % (8*sizeof(set->sig[0]))); return 0; } } LSS_INLINE int LSS_NAME(sigdelset)(struct kernel_sigset_t *set, int signum) { if (signum < 1 || signum > (int)(8*sizeof(set->sig))) { LSS_ERRNO = EINVAL; return -1; } else { set->sig[(signum - 1)/(8*sizeof(set->sig[0]))] &= ~(1UL << ((signum - 1) % (8*sizeof(set->sig[0])))); return 0; } } LSS_INLINE int LSS_NAME(sigismember)(struct kernel_sigset_t *set, int signum) { if (signum < 1 || signum > (int)(8*sizeof(set->sig))) { LSS_ERRNO = EINVAL; return -1; } else { return !!(set->sig[(signum - 1)/(8*sizeof(set->sig[0]))] & (1UL << ((signum - 1) % (8*sizeof(set->sig[0]))))); } } #if defined(__i386__) || defined(__ARM_ARCH_3__) || \ defined(__ARM_EABI__) || \ (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) || defined(__PPC__) #define __NR__sigaction __NR_sigaction #define __NR__sigpending __NR_sigpending #define __NR__sigprocmask __NR_sigprocmask #define __NR__sigsuspend __NR_sigsuspend #define __NR__socketcall __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(__ARM_EABI__) LSS_INLINE _syscall1(void*, mmap, void*, a) #endif LSS_INLINE _syscall6(void*, mmap2, void*, s, size_t, l, int, p, int, f, int, d, off_t, o) 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) LSS_INLINE _syscall3(int, _sigprocmask, int, h, const unsigned long*, s, unsigned long*, o) #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(sigprocmask)(int how, const struct kernel_sigset_t *set, struct kernel_sigset_t *oldset) { int olderrno = LSS_ERRNO; int rc = LSS_NAME(rt_sigprocmask)(how, set, oldset, (KERNEL_NSIG+7)/8); if (rc < 0 && LSS_ERRNO == ENOSYS) { LSS_ERRNO = olderrno; if (oldset) { LSS_NAME(sigemptyset)(oldset); } rc = LSS_NAME(_sigprocmask)(how, set ? &set->sig[0] : NULL, oldset ? &oldset->sig[0] : NULL); } 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(__PPC__) #undef LSS_SC_LOADARGS_0 #define LSS_SC_LOADARGS_0(dummy...) #undef LSS_SC_LOADARGS_1 #define LSS_SC_LOADARGS_1(arg1) \ __sc_4 = (unsigned long) (arg1) #undef LSS_SC_LOADARGS_2 #define LSS_SC_LOADARGS_2(arg1, arg2) \ LSS_SC_LOADARGS_1(arg1); \ __sc_5 = (unsigned long) (arg2) #undef LSS_SC_LOADARGS_3 #define LSS_SC_LOADARGS_3(arg1, arg2, arg3) \ LSS_SC_LOADARGS_2(arg1, arg2); \ __sc_6 = (unsigned long) (arg3) #undef LSS_SC_LOADARGS_4 #define LSS_SC_LOADARGS_4(arg1, arg2, arg3, arg4) \ LSS_SC_LOADARGS_3(arg1, arg2, arg3); \ __sc_7 = (unsigned long) (arg4) #undef LSS_SC_LOADARGS_5 #define LSS_SC_LOADARGS_5(arg1, arg2, arg3, arg4, arg5) \ LSS_SC_LOADARGS_4(arg1, arg2, arg3, arg4); \ __sc_8 = (unsigned long) (arg5) #undef LSS_SC_BODY #define LSS_SC_BODY(nr, type, opt, args...) \ long __sc_ret, __sc_err; \ { \ register unsigned long __sc_0 __asm__ ("r0") = __NR_socketcall; \ register unsigned long __sc_3 __asm__ ("r3") = opt; \ register unsigned long __sc_4 __asm__ ("r4"); \ register unsigned long __sc_5 __asm__ ("r5"); \ register unsigned long __sc_6 __asm__ ("r6"); \ register unsigned long __sc_7 __asm__ ("r7"); \ register unsigned long __sc_8 __asm__ ("r8"); \ LSS_SC_LOADARGS_##nr(args); \ __asm__ __volatile__ \ ("stwu 1, -48(1)\n\t" \ "stw 4, 20(1)\n\t" \ "stw 5, 24(1)\n\t" \ "stw 6, 28(1)\n\t" \ "stw 7, 32(1)\n\t" \ "stw 8, 36(1)\n\t" \ "addi 4, 1, 20\n\t" \ "sc\n\t" \ "mfcr %0" \ : "=&r" (__sc_0), \ "=&r" (__sc_3), "=&r" (__sc_4), \ "=&r" (__sc_5), "=&r" (__sc_6), \ "=&r" (__sc_7), "=&r" (__sc_8) \ : LSS_ASMINPUT_##nr \ : "cr0", "ctr", "memory"); \ __sc_ret = __sc_3; \ __sc_err = __sc_0; \ } \ LSS_RETURN(type, __sc_ret, __sc_err) 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(__ARM_EABI__) LSS_INLINE _syscall3(ssize_t, recvmsg, int, s, struct kernel_msghdr*, msg, int, flags) LSS_INLINE _syscall3(ssize_t, sendmsg, int, s, const struct kernel_msghdr*, msg, int, flags) LSS_INLINE _syscall6(ssize_t, sendto, int, s, const void*, buf, size_t,len, int, flags, const struct kernel_sockaddr*, to, unsigned int, tolen) LSS_INLINE _syscall2(int, shutdown, int, s, int, how) LSS_INLINE _syscall3(int, socket, int, domain, int, type, int, protocol) LSS_INLINE _syscall4(int, socketpair, int, d, int, type, int, protocol, int*, sv) #endif #if defined(__i386__) || defined(__ARM_ARCH_3__) || \ (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) #define __NR__socketcall __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; } 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); } 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); } 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); } LSS_INLINE int LSS_NAME(shutdown)(int s, int how) { return LSS_NAME(socketcall)(13, s, how); } LSS_INLINE int LSS_NAME(socket)(int domain, int type, int protocol) { return LSS_NAME(socketcall)(1, domain, type, protocol); } 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 #if defined(__i386__) || defined(__PPC__) LSS_INLINE _syscall4(int, fstatat64, int, d, const char *, p, struct kernel_stat64 *, b, int, f) #endif #if defined(__i386__) || defined(__PPC__) || \ (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) 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; } } #else LSS_INLINE _syscall1(int, pipe, int *, p) #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) #define __NR__statfs64 __NR_statfs64 #define __NR__fstatfs64 __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[]) { extern char **environ; return LSS_NAME(execve)(path, argv, (const char *const *)environ); } LSS_INLINE pid_t LSS_NAME(gettid)(void) { pid_t tid = LSS_NAME(_gettid)(); if (tid != -1) { return tid; } return LSS_NAME(getpid)(); } LSS_INLINE void *LSS_NAME(mremap)(void *old_address, size_t old_size, size_t new_size, int flags, ...) { va_list ap; void *new_address, *rc; va_start(ap, flags); new_address = va_arg(ap, void *); rc = LSS_NAME(_mremap)(old_address, old_size, new_size, flags, new_address); va_end(ap); return rc; } LSS_INLINE int LSS_NAME(ptrace_detach)(pid_t pid) { /* PTRACE_DETACH can sometimes forget to wake up the tracee and it * then sends job control signals to the real parent, rather than to * the tracer. We reduce the risk of this happening by starting a * whole new time slice, and then quickly sending a SIGCONT signal * right after detaching from the tracee. * * We use tkill to ensure that we only issue a wakeup for the thread being * detached. Large multi threaded apps can take a long time in the kernel * processing SIGCONT. */ int rc, err; LSS_NAME(sched_yield)(); rc = LSS_NAME(ptrace)(PTRACE_DETACH, pid, (void *)0, (void *)0); err = LSS_ERRNO; LSS_NAME(tkill)(pid, SIGCONT); /* Old systems don't have tkill */ if (LSS_ERRNO == ENOSYS) LSS_NAME(kill)(pid, SIGCONT); LSS_ERRNO = err; return rc; } LSS_INLINE int LSS_NAME(raise)(int sig) { return LSS_NAME(kill)(LSS_NAME(getpid)(), sig); } LSS_INLINE int LSS_NAME(setpgrp)(void) { return LSS_NAME(setpgid)(0, 0); } LSS_INLINE int LSS_NAME(sysconf)(int name) { extern int __getpagesize(void); switch (name) { case _SC_OPEN_MAX: { struct kernel_rlimit limit; #if defined(__ARM_EABI__) return LSS_NAME(ugetrlimit)(RLIMIT_NOFILE, &limit) < 0 ? 8192 : limit.rlim_cur; #else return LSS_NAME(getrlimit)(RLIMIT_NOFILE, &limit) < 0 ? 8192 : limit.rlim_cur; #endif } case _SC_PAGESIZE: return __getpagesize(); default: LSS_ERRNO = ENOSYS; return -1; } } #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_BODY(4, ssize_t, pread64, LSS_SYSCALL_ARG(f), LSS_SYSCALL_ARG(b), LSS_SYSCALL_ARG(c), (uint64_t)(o)); } LSS_INLINE ssize_t LSS_NAME(pwrite64)(int f, const void *b, size_t c, loff_t o) { LSS_BODY(4, ssize_t, pwrite64, LSS_SYSCALL_ARG(f), LSS_SYSCALL_ARG(b), LSS_SYSCALL_ARG(c), (uint64_t)(o)); } LSS_INLINE int LSS_NAME(readahead)(int f, loff_t o, unsigned c) { LSS_BODY(3, int, readahead, LSS_SYSCALL_ARG(f), (uint64_t)(o), LSS_SYSCALL_ARG(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 __NR_pread64 #define __NR__pwrite64 __NR_pwrite64 #define __NR__readahead __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 0, 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, long, 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, int len) { union { loff_t off; unsigned arg[2]; } o = { off }; return LSS_NAME(_readahead)(fd, LSS_LLARG_PAD o.arg[0], o.arg[1], len); } #endif #endif #ifdef __ANDROID__ /* 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") #endif #if defined(__cplusplus) && !defined(SYS_CPLUSPLUS) } #endif #endif #endif