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| author | Joseph Myers <joseph@codesourcery.com> | 2018-11-23 17:53:50 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2018-11-23 17:53:50 +0000 |
| commit | 1283c478aa0a9b3d84320db5745a61b7f61b360c (patch) | |
| tree | def3ad714311a2880898cd7b82ac20805d515987 /sysdeps/unix/sysv/linux | |
| parent | c089fd80c793b1a987e1a6e9a08248b0861ec7ed (diff) | |
| download | glibc-1283c478aa0a9b3d84320db5745a61b7f61b360c.tar.gz glibc-1283c478aa0a9b3d84320db5745a61b7f61b360c.tar.xz glibc-1283c478aa0a9b3d84320db5745a61b7f61b360c.zip | |
Fix Arm __ASSUME_COPY_FILE_RANGE (bug 23915).
The generic kernel-features.h defines __ASSUME_COPY_FILE_RANGE for 4.5 and later kernels. However, for 32-bit Arm binaries running on 64-bit Arm kernels, the syscall was only wired up in the 4.7 kernel, although the 32-bit Arm kernel had the syscall from 4.5 onwards. This patch corrects the Arm kernel-features.h to undefine the macro for configured minimum kernel versions before 4.7. Tested (compilation only) with a build-many-glibcs.py build for arm-linux-gnueabi. [BZ #23915] * sysdeps/unix/sysv/linux/arm/kernel-features.h [__LINUX_KERNEL_VERSION < 0x040700] (__ASSUME_COPY_FILE_RANGE): Undefine.
Diffstat (limited to 'sysdeps/unix/sysv/linux')
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/kernel-features.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/kernel-features.h b/sysdeps/unix/sysv/linux/arm/kernel-features.h index c6e745227c..e4ca98bfea 100644 --- a/sysdeps/unix/sysv/linux/arm/kernel-features.h +++ b/sysdeps/unix/sysv/linux/arm/kernel-features.h @@ -40,11 +40,12 @@ #define __ASSUME_RECV_SYSCALL 1 #define __ASSUME_SEND_SYSCALL 1 -/* Support for the mlock2 syscall was added to the compat syscall - table for 64-bit kernels in 4.7, although present in 32-bit kernels - from 4.4. */ +/* Support for the mlock2 and copy_file_range syscalls was added to + the compat syscall table for 64-bit kernels in 4.7, although + present in 32-bit kernels from 4.4 and 4.5 respectively. */ #if __LINUX_KERNEL_VERSION < 0x040700 # undef __ASSUME_MLOCK2 +# undef __ASSUME_COPY_FILE_RANGE #endif #undef __ASSUME_CLONE_DEFAULT |