| /* Set flags signalling availability of kernel features based on given |
| kernel version number. |
| Copyright (C) 1999-2003, 2004, 2005 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* This file must not contain any C code. At least it must be protected |
| to allow using the file also in assembler files. */ |
| |
| #if defined __mips__ |
| # include <sgidefs.h> |
| #endif |
| |
| #include <linux/version.h> |
| #define __LINUX_KERNEL_VERSION LINUX_VERSION_CODE |
| |
| /* We assume for __LINUX_KERNEL_VERSION the same encoding used in |
| linux/version.h. I.e., the major, minor, and subminor all get a |
| byte with the major number being in the highest byte. This means |
| we can do numeric comparisons. |
| |
| In the following we will define certain symbols depending on |
| whether the describes kernel feature is available in the kernel |
| version given by __LINUX_KERNEL_VERSION. We are not always exactly |
| recording the correct versions in which the features were |
| introduced. If somebody cares these values can afterwards be |
| corrected. Most of the numbers here are set corresponding to |
| 2.2.0. */ |
| |
| /* `getcwd' system call. */ |
| #if __LINUX_KERNEL_VERSION >= 131584 |
| # define __ASSUME_GETCWD_SYSCALL 1 |
| #endif |
| |
| /* When was `poll' introduced? */ |
| #if __LINUX_KERNEL_VERSION >= 131584 |
| # define __ASSUME_POLL_SYSCALL 1 |
| #endif |
| |
| /* Real-time signal became usable in 2.1.70. */ |
| #if __LINUX_KERNEL_VERSION >= 131398 |
| # define __ASSUME_REALTIME_SIGNALS 1 |
| #endif |
| |
| /* When were the `pread'/`pwrite' syscalls introduced? */ |
| #if __LINUX_KERNEL_VERSION >= 131584 |
| # define __ASSUME_PREAD_SYSCALL 1 |
| # define __ASSUME_PWRITE_SYSCALL 1 |
| #endif |
| |
| /* When was `poll' introduced? */ |
| #if __LINUX_KERNEL_VERSION >= 131584 |
| # define __ASSUME_POLL_SYSCALL 1 |
| #endif |
| |
| /* The `lchown' syscall was introduced in 2.1.80. */ |
| #if __LINUX_KERNEL_VERSION >= 131408 |
| # define __ASSUME_LCHOWN_SYSCALL 1 |
| #endif |
| |
| /* When did the `setresuid' sysall became available? */ |
| #if __LINUX_KERNEL_VERSION >= 131584 && !defined __sparc__ |
| # define __ASSUME_SETRESUID_SYSCALL 1 |
| #endif |
| |
| /* The SIOCGIFNAME ioctl is available starting with 2.1.50. */ |
| #if __LINUX_KERNEL_VERSION >= 131408 |
| # define __ASSUME_SIOCGIFNAME 1 |
| #endif |
| |
| /* MSG_NOSIGNAL was at least available with Linux 2.2.0. */ |
| #if __LINUX_KERNEL_VERSION >= 131584 |
| # define __ASSUME_MSG_NOSIGNAL 1 |
| #endif |
| |
| /* On x86 another `getrlimit' syscall was added in 2.3.25. */ |
| #if __LINUX_KERNEL_VERSION >= 131865 && defined __i386__ |
| # define __ASSUME_NEW_GETRLIMIT_SYSCALL 1 |
| #endif |
| |
| /* On x86 the truncate64/ftruncate64 syscalls were introduced in 2.3.31. */ |
| #if __LINUX_KERNEL_VERSION >= 131871 && defined __i386__ |
| # define __ASSUME_TRUNCATE64_SYSCALL 1 |
| #endif |
| |
| /* On x86 the mmap2 syscall was introduced in 2.3.31. */ |
| #if __LINUX_KERNEL_VERSION >= 131871 && defined __i386__ |
| # define __ASSUME_MMAP2_SYSCALL 1 |
| #endif |
| |
| /* On x86 the stat64/lstat64/fstat64 syscalls were introduced in 2.3.34. */ |
| #if __LINUX_KERNEL_VERSION >= 131874 && defined __i386__ |
| # define __ASSUME_STAT64_SYSCALL 1 |
| #endif |
| |
| /* On sparc and ARM the truncate64/ftruncate64/mmap2/stat64/lstat64/fstat64 |
| syscalls were introduced in 2.3.35. */ |
| #if __LINUX_KERNEL_VERSION >= 131875 && (defined __sparc__ || defined __arm__) |
| # define __ASSUME_TRUNCATE64_SYSCALL 1 |
| # define __ASSUME_MMAP2_SYSCALL 1 |
| # define __ASSUME_STAT64_SYSCALL 1 |
| #endif |
| |
| /* I know for sure that getrlimit are in 2.3.35 on powerpc. */ |
| #if __LINUX_KERNEL_VERSION >= 131875 && defined __powerpc__ |
| # define __ASSUME_NEW_GETRLIMIT_SYSCALL 1 |
| #endif |
| |
| /* I know for sure that these are in 2.3.35 on powerpc. But PowerPC64 does not |
| support separate 64-bit syscalls, already 64-bit */ |
| #if __LINUX_KERNEL_VERSION >= 131875 && defined __powerpc__ \ |
| && !defined __powerpc64__ |
| # define __ASSUME_TRUNCATE64_SYSCALL 1 |
| # define __ASSUME_STAT64_SYSCALL 1 |
| #endif |
| |
| /* Linux 2.3.39 introduced 32bit UID/GIDs. Some platforms had 32 |
| bit type all along. */ |
| #if __LINUX_KERNEL_VERSION >= 131879 || defined __powerpc__ || defined __mips__ |
| # define __ASSUME_32BITUIDS 1 |
| #endif |
| |
| /* Linux 2.3.39 sparc added setresuid. */ |
| #if __LINUX_KERNEL_VERSION >= 131879 && defined __sparc__ |
| # define __ASSUME_SETRESUID_SYSCALL 1 |
| #endif |
| |
| #if __LINUX_KERNEL_VERSION >= 131879 |
| # define __ASSUME_SETRESGID_SYSCALL 1 |
| #endif |
| |
| /* Linux 2.3.39 introduced IPC64. Except for powerpc. */ |
| #if __LINUX_KERNEL_VERSION >= 131879 && !defined __powerpc__ |
| # define __ASSUME_IPC64 1 |
| #endif |
| |
| /* MIPS platforms had IPC64 all along. */ |
| #if defined __mips__ |
| # define __ASSUME_IPC64 1 |
| #endif |
| |
| /* We can use the LDTs for threading with Linux 2.3.99 and newer. */ |
| #if __LINUX_KERNEL_VERSION >= 131939 |
| # define __ASSUME_LDT_WORKS 1 |
| #endif |
| |
| /* Linux 2.4.0 on PPC introduced a correct IPC64. But PowerPC64 does not |
| support a separate 64-bit sys call, already 64-bit */ |
| #if __LINUX_KERNEL_VERSION >= 132096 && defined __powerpc__ \ |
| && !defined __powerpc64__ |
| # define __ASSUME_IPC64 1 |
| #endif |
| |
| /* SH kernels got stat64, mmap2, and truncate64 during 2.4.0-test. */ |
| #if __LINUX_KERNEL_VERSION >= 132096 && defined __sh__ |
| # define __ASSUME_TRUNCATE64_SYSCALL 1 |
| # define __ASSUME_MMAP2_SYSCALL 1 |
| # define __ASSUME_STAT64_SYSCALL 1 |
| #endif |
| |
| /* The changed st_ino field appeared in 2.4.0-test6. But we cannot |
| distinguish this version from other 2.4.0 releases. Therefore play |
| save and assume it available is for 2.4.1 and up. However, SH is lame, |
| and still does not have a 64-bit inode field. */ |
| #if __LINUX_KERNEL_VERSION >= 132097 && !defined __alpha__ && !defined __sh__ |
| # define __ASSUME_ST_INO_64_BIT 1 |
| #endif |
| |
| /* To support locking of large files a new fcntl() syscall was introduced |
| in 2.4.0-test7. We test for 2.4.1 for the earliest version we know |
| the syscall is available. */ |
| #if __LINUX_KERNEL_VERSION >= 132097 && (defined __i386__ || defined __sparc__) |
| # define __ASSUME_FCNTL64 1 |
| #endif |
| |
| /* The AT_CLKTCK auxiliary vector entry was introduction in the 2.4.0 |
| series. */ |
| #if __LINUX_KERNEL_VERSION >= 132097 |
| # define __ASSUME_AT_CLKTCK 1 |
| #endif |
| |
| /* Arm got fcntl64 in 2.4.4, PowerPC and SH have it also in 2.4.4 (I |
| don't know when it got introduced). But PowerPC64 does not support |
| separate FCNTL64 call, FCNTL is already 64-bit */ |
| #if __LINUX_KERNEL_VERSION >= 132100 \ |
| && (defined __arm__ || defined __powerpc__ || defined __sh__) \ |
| && !defined __powerpc64__ |
| # define __ASSUME_FCNTL64 1 |
| #endif |
| |
| /* The getdents64 syscall was introduced in 2.4.0-test7. We test for |
| 2.4.1 for the earliest version we know the syscall is available. */ |
| #if __LINUX_KERNEL_VERSION >= 132097 |
| # define __ASSUME_GETDENTS64_SYSCALL 1 |
| #endif |
| |
| /* When did O_DIRECTORY became available? Early in 2.3 but when? |
| Be safe, use 2.3.99. */ |
| #if __LINUX_KERNEL_VERSION >= 131939 |
| # define __ASSUME_O_DIRECTORY 1 |
| #endif |
| |
| /* Starting with one of the 2.4.0 pre-releases the Linux kernel passes |
| up the page size information. */ |
| #if __LINUX_KERNEL_VERSION >= 132097 |
| # define __ASSUME_AT_PAGESIZE 1 |
| #endif |
| |
| /* Starting with at least 2.4.0 the kernel passes the uid/gid unconditionally |
| up to the child. */ |
| #if __LINUX_KERNEL_VERSION >= 132097 |
| # define __ASSUME_AT_XID 1 |
| #endif |
| |
| /* Starting with 2.4.5 kernels PPC passes the AUXV in the standard way |
| and the vfork syscall made it into the official kernel. */ |
| #if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__ |
| # define __ASSUME_STD_AUXV 1 |
| # define __ASSUME_VFORK_SYSCALL 1 |
| #endif |
| |
| /* Starting with 2.4.5 kernels the mmap2 syscall made it into the official |
| kernel. But PowerPC64 does not support a separate MMAP2 call. */ |
| #if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__ \ |
| && !defined __powerpc64__ |
| # define __ASSUME_MMAP2_SYSCALL 1 |
| #endif |
| |
| /* Starting with 2.4.21 PowerPC implements the new prctl syscall. |
| This allows applications to get/set the Floating Point Exception Mode. */ |
| #if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc__ |
| # define __ASSUME_NEW_PRCTL_SYSCALL 1 |
| #endif |
| |
| /* Starting with 2.4.21 the PowerPC32 clone syscall works as expected. */ |
| #if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc__ \ |
| && !defined __powerpc64__ |
| # define __ASSUME_FIXED_CLONE_SYSCALL 1 |
| #endif |
| |
| /* Starting with 2.4.21 PowerPC64 implements the new rt_sigreturn syscall. |
| The new rt_sigreturn takes an ucontext pointer allowing rt_sigreturn |
| to be used in the set/swapcontext implementation. */ |
| #if __LINUX_KERNEL_VERSION >= (132096+21) && defined __powerpc64__ |
| # define __ASSUME_NEW_RT_SIGRETURN_SYSCALL 1 |
| #endif |
| |
| /* On x86, the set_thread_area syscall was introduced in 2.5.29, but its |
| semantics was changed in 2.5.30, and again after 2.5.31. */ |
| #if __LINUX_KERNEL_VERSION >= 132384 && defined __i386__ |
| # define __ASSUME_SET_THREAD_AREA_SYSCALL 1 |
| #endif |
| |
| /* The vfork syscall on x86 and arm was definitely available in 2.4. */ |
| #if __LINUX_KERNEL_VERSION >= 132097 && (defined __i386__ || defined __arm__) |
| # define __ASSUME_VFORK_SYSCALL 1 |
| #endif |
| |
| /* There are an infinite number of PA-RISC kernel versions numbered |
| 2.4.0. But they've not really been released as such. We require |
| and expect the final version here. */ |
| #ifdef __hppa__ |
| # define __ASSUME_32BITUIDS 1 |
| # define __ASSUME_TRUNCATE64_SYSCALL 1 |
| # define __ASSUME_MMAP2_SYSCALL 1 |
| # define __ASSUME_STAT64_SYSCALL 1 |
| # define __ASSUME_IPC64 1 |
| # define __ASSUME_ST_INO_64_BIT 1 |
| # define __ASSUME_FCNTL64 1 |
| # define __ASSUME_GETDENTS64_SYSCALL 1 |
| #endif |
| |
| /* Alpha switched to a 64-bit timeval sometime before 2.2.0. */ |
| #if __LINUX_KERNEL_VERSION >= 131584 && defined __alpha__ |
| # define __ASSUME_TIMEVAL64 1 |
| #endif |
| |
| #if defined __mips__ && _MIPS_SIM == _ABIN32 |
| # define __ASSUME_FCNTL64 1 |
| #endif |
| |
| /* The late 2.5 kernels saw a lot of new CLONE_* flags. Summarize |
| their availability with one define. The changes were made first |
| for i386 and the have to be done separately for the other archs. |
| For i386 we pick 2.5.50 as the first version with support. */ |
| #if __LINUX_KERNEL_VERSION >= 132402 && defined __i386__ |
| # define __ASSUME_CLONE_THREAD_FLAGS 1 |
| #endif |
| |
| /* Support for various CLOEXEC and NONBLOCK flags was added for x86, |
| x86-64, PPC, IA-64, SPARC< and S390 in 2.6.23. */ |
| #if __LINUX_KERNEL_VERSION >= 0x020617 \ |
| && (defined __i386__ || defined __x86_64__ || defined __powerpc__ \ |
| || defined __ia64__ || defined __sparc__ || defined __s390__) |
| # define __ASSUME_O_CLOEXEC 1 |
| #endif |
| |
| /* Support for various CLOEXEC and NONBLOCK flags was added for x86, |
| * x86-64, PPC, IA-64, and SPARC in 2.6.27. */ |
| #if (__LINUX_KERNEL_VERSION >= 0x02061b \ |
| && (defined __i386__ || defined __x86_64__ || defined __powerpc__ \ |
| || defined __ia64__ || defined __sparc__ || defined __s390__) \ |
| ) || (__LINUX_KERNEL_VERSION >= 0x020621 && defined __alpha__) \ |
| || defined __aarch64__ || defined __tile__ |
| /* # define __ASSUME_SOCK_CLOEXEC 1 */ |
| /* # define __ASSUME_IN_NONBLOCK 1 */ |
| # define __ASSUME_PIPE2 1 |
| /* # define __ASSUME_EVENTFD2 1 */ |
| /* # define __ASSUME_SIGNALFD4 1 */ |
| /* # define __ASSUME_DUP3 1 */ |
| #endif |
| |
| /* These features were surely available with 2.4.12. */ |
| #if __LINUX_KERNEL_VERSION >= 132108 && defined __mc68000__ |
| # define __ASSUME_MMAP2_SYSCALL 1 |
| # define __ASSUME_TRUNCATE64_SYSCALL 1 |
| # define __ASSUME_STAT64_SYSCALL 1 |
| # define __ASSUME_FCNTL64 1 |
| # define __ASSUME_VFORK_SYSCALL 1 |
| #endif |
| |
| /* Beginning with 2.5.63 support for realtime and monotonic clocks and |
| timers based on them is available. */ |
| #if __LINUX_KERNEL_VERSION >= 132415 |
| # define __ASSUME_POSIX_TIMERS 1 |
| #endif |
| |
| /* Beginning with 2.6.12 the clock and timer supports CPU clocks. */ |
| #if __LINUX_KERNEL_VERSION >= 0x2060c |
| # define __ASSUME_POSIX_CPU_TIMERS 1 |
| #endif |
| |
| /* The late 2.5 kernels saw a lot of new CLONE_* flags. Summarize |
| their availability with one define. The changes were made first |
| for i386 and the have to be done separately for the other archs. |
| For ia64, s390*, PPC, x86-64 we pick 2.5.64 as the first version |
| with support. */ |
| #if __LINUX_KERNEL_VERSION >= 132416 \ |
| && (defined __ia64__ || defined __s390__ || defined __powerpc__ \ |
| || defined __x86_64__ || defined __sh__) |
| # define __ASSUME_CLONE_THREAD_FLAGS 1 |
| #endif |
| |
| /* With kernel 2.4.17 we always have netlink support. */ |
| #if __LINUX_KERNEL_VERSION >= (132096+17) |
| # define __ASSUME_NETLINK_SUPPORT 1 |
| #endif |
| |
| /* The requeue futex functionality was introduced in 2.5.70. */ |
| #if __LINUX_KERNEL_VERSION >= 132422 |
| # define __ASSUME_FUTEX_REQUEUE 1 |
| #endif |
| |
| /* The statfs64 syscalls are available in 2.5.74. */ |
| #if __LINUX_KERNEL_VERSION >= 132426 |
| # define __ASSUME_STATFS64 1 |
| #endif |
| |
| /* Starting with at least 2.5.74 the kernel passes the setuid-like exec |
| flag unconditionally up to the child. */ |
| #if __LINUX_KERNEL_VERSION >= 132426 |
| # define __ASSUME_AT_SECURE 1 |
| #endif |
| |
| /* Starting with the 2.5.75 kernel the kernel fills in the correct value |
| in the si_pid field passed as part of the siginfo_t struct to signal |
| handlers. */ |
| #if __LINUX_KERNEL_VERSION >= 132427 |
| # define __ASSUME_CORRECT_SI_PID 1 |
| #endif |
| |
| /* The tgkill syscall was instroduced for i386 in 2.5.75. For Alpha |
| it was introduced in 2.6.0-test1 which unfortunately cannot be |
| distinguished from 2.6.0. On x86-64, ppc, and ppc64 it was |
| introduced in 2.6.0-test3. */ |
| #if (__LINUX_KERNEL_VERSION >= 132427 && defined __i386__) \ |
| || (__LINUX_KERNEL_VERSION >= 132609 && defined __alpha__) \ |
| || (__LINUX_KERNEL_VERSION >= 132609 && defined __x86_64__) \ |
| || (__LINUX_KERNEL_VERSION >= 132609 && defined __powerpc__) \ |
| || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__) |
| # define __ASSUME_TGKILL 1 |
| #endif |
| |
| /* The utimes syscall has been available for some architectures |
| forever. For x86 it was introduced after 2.5.75, for x86-64, |
| ppc, and ppc64 it was introduced in 2.6.0-test3. */ |
| #if defined __alpha__ || defined __ia64__ || defined __hppa__ \ |
| || defined __sparc__ \ |
| || (__LINUX_KERNEL_VERSION > 132427 && defined __i386__) \ |
| || (__LINUX_KERNEL_VERSION > 132609 && defined __x86_64__) \ |
| || (__LINUX_KERNEL_VERSION >= 132609 && defined __powerpc__) \ |
| || (__LINUX_KERNEL_VERSION >= 132609 && defined __sh__) |
| # define __ASSUME_UTIMES 1 |
| #endif |
| |
| // XXX Disabled for now since the semantics we want is not achieved. |
| #if 0 |
| /* The CLONE_STOPPED flag was introduced in the 2.6.0-test1 series. */ |
| #if __LINUX_KERNEL_VERSION >= 132609 |
| # define __ASSUME_CLONE_STOPPED 1 |
| #endif |
| #endif |
| |
| /* The fixed version of the posix_fadvise64 syscall appeared in |
| 2.6.0-test3. At least for x86. Powerpc support appeared in |
| 2.6.2, but for 32-bit userspace only. */ |
| #if (__LINUX_KERNEL_VERSION >= 132609 && defined __i386__) \ |
| || (__LINUX_KERNEL_VERSION >= 132610 && defined __powerpc__ \ |
| && !defined __powerpc64__) |
| # define __ASSUME_FADVISE64_64_SYSCALL 1 |
| #endif |
| |
| /* The PROT_GROWSDOWN/PROT_GROWSUP flags were introduced in the 2.6.0-test |
| series. */ |
| #if __LINUX_KERNEL_VERSION >= 132609 |
| # define __ASSUME_PROT_GROWSUPDOWN 1 |
| #endif |
| |
| /* Starting with 2.6.0 PowerPC adds signal/swapcontext support for Vector |
| SIMD (AKA Altivec, VMX) instructions and register state. This changes |
| the overall size of the sigcontext and adds the swapcontext syscall. */ |
| #if __LINUX_KERNEL_VERSION >= 132608 && defined __powerpc__ |
| # define __ASSUME_SWAPCONTEXT_SYSCALL 1 |
| #endif |
| |
| /* The CLONE_DETACHED flag is not necessary in 2.6.2 kernels, it is |
| implied. */ |
| #if __LINUX_KERNEL_VERSION >= 132610 |
| # define __ASSUME_NO_CLONE_DETACHED 1 |
| #endif |
| |
| /* Starting with version 2.6.4-rc1 the getdents syscall returns d_type |
| information as well and in between 2.6.5 and 2.6.8 most compat wrappers |
| were fixed too. Except s390{,x} which was fixed in 2.6.11. */ |
| #if (__LINUX_KERNEL_VERSION >= 0x020608 && !defined __s390__) \ |
| || (__LINUX_KERNEL_VERSION >= 0x02060b && defined __s390__) |
| # define __ASSUME_GETDENTS32_D_TYPE 1 |
| #endif |
| |
| /* Starting with version 2.5.3, the initial location returned by `brk' |
| after exec is always rounded up to the next page. */ |
| #if __LINUX_KERNEL_VERSION >= 132355 |
| # define __ASSUME_BRK_PAGE_ROUNDED 1 |
| #endif |
| |
| /* Starting with version 2.6.9, the waitid system call is available. |
| Except for powerpc and powerpc64, where it is available in 2.6.12. */ |
| #if (__LINUX_KERNEL_VERSION >= 0x020609 && !defined __powerpc__) \ |
| || (__LINUX_KERNEL_VERSION >= 0x02060c && defined __powerpc__) |
| # define __ASSUME_WAITID_SYSCALL 1 |
| #endif |
| |
| /* Starting with version 2.6.9, SSI_IEEE_RAISE_EXCEPTION exists. */ |
| #if __LINUX_KERNEL_VERSION >= 0x020609 && defined __alpha__ |
| #define __ASSUME_IEEE_RAISE_EXCEPTION 1 |
| #endif |
| |
| /* Support for the accept4 syscall was added in 2.6.28. */ |
| #if __LINUX_KERNEL_VERSION >= 0x02061c \ |
| && (defined __i386__ || defined __x86_64__ || defined __powerpc__ \ |
| || defined __sparc__ || defined __s390__) |
| # define __ASSUME_ACCEPT4 1 |
| #endif |
| |
| /* Support for the accept4 syscall for alpha was added after 2.6.33-rc1. */ |
| #if __LINUX_KERNEL_VERSION >= 0x020621 && defined __alpha__ |
| # define __ASSUME_ACCEPT4 1 |
| #endif |
| |
| /* Support for the FUTEX_CLOCK_REALTIME flag was added in 2.6.29. */ |
| #if __LINUX_KERNEL_VERSION >= 0x02061d |
| # define __ASSUME_FUTEX_CLOCK_REALTIME 1 |
| #endif |
| |
| /* Support for PI futexes was added in 2.6.18. */ |
| #if __LINUX_KERNEL_VERSION >= 0x020612 |
| # define __ASSUME_FUTEX_LOCK_PI 1 |
| #endif |
| |
| /* Support for private futexes was added in 2.6.22. */ |
| #if __LINUX_KERNEL_VERSION >= 0x020616 |
| # define __ASSUME_PRIVATE_FUTEX 1 |
| #endif |
| |
| /* Support for fallocate was added in 2.6.23, |
| on s390 only after 2.6.23-rc1, on alpha only after 2.6.33-rc1. */ |
| #if __LINUX_KERNEL_VERSION >= 0x020617 \ |
| && (!defined __s390__ || __LINUX_KERNEL_VERSION >= 0x020618) \ |
| && (!defined __alpha__ || __LINUX_KERNEL_VERSION >= 0x020621) |
| # define __ASSUME_FALLOCATE 1 |
| #endif |
| |
| /* getcpu is a syscall for x86-64 since 3.1. */ |
| #if defined __x86_64__ && __LINUX_KERNEL_VERSION >= 0x030100 |
| # define __ASSUME_GETCPU_SYSCALL 1 |
| #endif |