From becb26b84bfe4d3273c4e2d4e7684dfbbf7c6bcd Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Thu, 19 Mar 2015 13:33:01 -0400 Subject: [PATCH] linux-generic: add a README --- ChangeLog | 4 ++++ sysdeps/unix/sysv/linux/generic/README | 11 +++++++++++ 2 files changed, 15 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/generic/README diff --git a/ChangeLog b/ChangeLog index d449323..b9b3c2c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +2015-03-19 Chris Metcalf + + * sysdeps/unix/sysv/linux/generic/README: New file. + 2015-03-18 Joseph Myers [BZ #18138] diff --git a/sysdeps/unix/sysv/linux/generic/README b/sysdeps/unix/sysv/linux/generic/README new file mode 100644 index 0000000..301a610 --- /dev/null +++ b/sysdeps/unix/sysv/linux/generic/README @@ -0,0 +1,11 @@ +This hierarchy supports Linux systems using the new +asm-generic/unistd.h, which removes many familiar old syscalls. For +example, to implement open(), newer Linux architectures require glibc +to invoke the __NR_openat syscall with AT_FDCWD. This hierarchy +provides all those implementations. + +It also provides support for 32-bit platforms using the 64-bit kernel +syscall APIs, as the 32-bit ones are no longer provided. Note that +newer ILP32 environments (x32 or AArch64:ILP32, for example) are +converting to use more 64-bit types in kernel syscalls, so that aspect +of this support is in more flux as of this writing. -- 2.7.4