diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/kernel-features.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/kernel-features.h | 163 |
1 files changed, 99 insertions, 64 deletions
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h index f499a712c4..e54f675dbe 100644 --- a/sysdeps/unix/sysv/linux/kernel-features.h +++ b/sysdeps/unix/sysv/linux/kernel-features.h @@ -1,6 +1,6 @@ /* Set flags signalling availability of kernel features based on given kernel version number. - Copyright (C) 1999-2003, 2004 Free Software Foundation, Inc. + Copyright (C) 1999-2003, 2004, 2005, 2006 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 @@ -21,10 +21,6 @@ /* 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 - #ifndef __LINUX_KERNEL_VERSION /* We assume the worst; all kernels should be supported. */ # define __LINUX_KERNEL_VERSION 0 @@ -79,6 +75,22 @@ # 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 + +/* The sendfile syscall was introduced in 2.2.0. */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_SENDFILE 1 +#endif + +/* Only very old kernels had no real symlinks for terminal descriptors + in /proc/self/fd. */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_PROC_SELF_FD_SYMLINK 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 @@ -99,9 +111,10 @@ # define __ASSUME_STAT64_SYSCALL 1 #endif -/* On sparc and ARM the truncate64/ftruncate64/mmap2/stat64/lstat64/fstat64 +/* On sparc the truncate64/ftruncate64/mmap2/stat64/lstat64/fstat64 syscalls were introduced in 2.3.35. */ -#if __LINUX_KERNEL_VERSION >= 131875 && (defined __sparc__ || defined __arm__) +#if __LINUX_KERNEL_VERSION >= 131875 \ + && (defined __sparc__ && !defined __arch64__) # define __ASSUME_TRUNCATE64_SYSCALL 1 # define __ASSUME_MMAP2_SYSCALL 1 # define __ASSUME_STAT64_SYSCALL 1 @@ -122,7 +135,7 @@ /* 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__ +#if __LINUX_KERNEL_VERSION >= 131879 || defined __powerpc__ # define __ASSUME_32BITUIDS 1 #endif @@ -140,11 +153,6 @@ # 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 @@ -189,7 +197,7 @@ 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 __powerpc__ || defined __sh__) \ && !defined __powerpc64__ # define __ASSUME_FCNTL64 1 #endif @@ -258,65 +266,37 @@ #endif /* The vfork syscall on x86 and arm was definitely available in 2.4. */ -#if __LINUX_KERNEL_VERSION >= 132097 && (defined __i386__ || defined __arm__) +#if __LINUX_KERNEL_VERSION >= 132097 && defined __i386__ # 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__ + For i386 we pick 2.5.50 as the first version with support. + For ia64, s390*, PPC, x86-64, and SH we pick 2.5.64 as the first + version with support. */ +#if ((__LINUX_KERNEL_VERSION >= 132402 && defined __i386__) \ + || (__LINUX_KERNEL_VERSION >= 132416 \ + && (defined __ia64__ || defined __s390__ \ + || defined __powerpc__ || defined __x86_64__ || defined __sh__))) # define __ASSUME_CLONE_THREAD_FLAGS 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 -/* 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 +/* Beginning with 2.6.12 the clock and timer supports CPU clocks. */ +#if __LINUX_KERNEL_VERSION >= 0x2060c +# define __ASSUME_POSIX_CPU_TIMERS 1 #endif /* With kernel 2.4.17 we always have netlink support. */ @@ -349,22 +329,24 @@ /* 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 it was introduced in - 2.6.0-test3. */ + 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 in - 2.6.0-test3. */ -#if defined __alpha__ || defined __ia64__ || defined __hppa__ \ + 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 __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 @@ -378,8 +360,11 @@ #endif /* The fixed version of the posix_fadvise64 syscall appeared in - 2.6.0-test3. At least for x86. */ -#if __LINUX_KERNEL_VERSION >= 132609 && defined __i386__ + 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 @@ -403,8 +388,10 @@ #endif /* Starting with version 2.6.4-rc1 the getdents syscall returns d_type - information as well. */ -#if __LINUX_KERNEL_VERSION >= 132612 + 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 @@ -414,8 +401,12 @@ # define __ASSUME_BRK_PAGE_ROUNDED 1 #endif -/* Starting with version 2.6.9, the waitid system call is available. */ -#if __LINUX_KERNEL_VERSION >= 0x020609 +/* Starting with version 2.6.9, the waitid system call is available. + Except for powerpc{,64} and s390{,x}, where it is available in 2.6.12. */ +#if (__LINUX_KERNEL_VERSION >= 0x020609 \ + && !defined __powerpc__ && !defined __s390__) \ + || (__LINUX_KERNEL_VERSION >= 0x02060c \ + && (defined __powerpc__ || defined __s390__)) # define __ASSUME_WAITID_SYSCALL 1 #endif @@ -423,3 +414,47 @@ #if __LINUX_KERNEL_VERSION >= 0x020609 && defined __alpha__ #define __ASSUME_IEEE_RAISE_EXCEPTION 1 #endif + +/* On sparc64 stat64/lstat64/fstat64 syscalls were introduced in 2.6.12. */ +#if __LINUX_KERNEL_VERSION >= 0x02060c && defined __sparc__ \ + && defined __arch64__ +# define __ASSUME_STAT64_SYSCALL 1 +#endif + +/* Early kernel used "shm" as the filesystem name for the filesystem used + for shm_open etc. Later it is "tmpfs". 2.4.20 is a safe bet for the + cutover. */ +#if __LINUX_KERNEL_VERSION >= 0x02041a +# define __ASSUME_TMPFS_NAME 1 +#endif + +/* pselect was introduced just after 2.6.16-rc1. Due to the way the + kernel versions are advertised we can only rely on 2.6.17 to have + the code. */ +#if __LINUX_KERNEL_VERSION >= 0x020611 && !defined __x86_64__ +# define __ASSUME_PSELECT 1 +#endif + +/* ppoll was introduced just after 2.6.16-rc1. Due to the way the + kernel versions are advertised we can only rely on 2.6.17 to have + the code. */ +#if __LINUX_KERNEL_VERSION >= 0x020611 && !defined __x86_64__ +# define __ASSUME_PPOLL 1 +#endif + +/* The *at syscalls were introduced just after 2.6.16-rc1. Due to the way the + kernel versions are advertised we can only rely on 2.6.17 to have + the code. */ +#if __LINUX_KERNEL_VERSION >= 0x020611 +# define __ASSUME_ATFCTS 1 +#endif + +/* Support for inter-process robust mutexes was added in 2.6.17. */ +#if __LINUX_KERNEL_VERSION >= 0x020611 +# define __ASSUME_SET_ROBUST_LIST 1 +#endif + +/* Support for PI futexes was added in 2.6.18. */ +#if __LINUX_KERNEL_VERSION >= 0x020612 +# define __ASSUME_FUTEX_LOCK_PI 1 +#endif |