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Diffstat (limited to 'sysdeps/unix/sysv/linux/kernel-features.h')
-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h163
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
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-13 19:56:10 +0000