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| author | Joseph Myers <joseph@codesourcery.com> | 2017-05-09 20:01:52 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2017-05-09 20:01:52 +0000 |
| commit | 0cb5da5c09e2b2eb47348d110282b92ec27eedf5 (patch) | |
| tree | 52372d318cc72f03ad9690fbb78dafa2f3e7572e /ChangeLog | |
| parent | 9a45f54310573c190fa270e1f80d8307750305e9 (diff) | |
| download | glibc-0cb5da5c09e2b2eb47348d110282b92ec27eedf5.tar.gz glibc-0cb5da5c09e2b2eb47348d110282b92ec27eedf5.tar.xz glibc-0cb5da5c09e2b2eb47348d110282b92ec27eedf5.zip | |
Simplify sendmmsg code.
Now we can assume a kernel with sendmmsg support, this patch simplifies the implementation to be similar to that for accept4: either using socketcall or the syscall according to whether the syscall is known to be available, without further fallback implementations. The __ASSUME_SENDMMSG macro is kept (now defined unconditionally), since it's used in resolv/res_send.c. Tested for x86_64 and x86. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_SENDMMSG_SYSCALL): Define unconditionally. (__ASSUME_SENDMMSG): Likewise. (__ASSUME_SENDMMSG_SOCKETCALL): Remove macro. * sysdeps/unix/sysv/linux/sendmmsg.c (__sendmmsg): Define using sendmmsg syscall if that can be assumed to be present, socketcall otherwise, with no fallback for runtime failure.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 554b8082e4..5387b1949b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,6 +1,14 @@ 2017-05-09 Joseph Myers <joseph@codesourcery.com> * sysdeps/unix/sysv/linux/kernel-features.h + (__ASSUME_SENDMMSG_SYSCALL): Define unconditionally. + (__ASSUME_SENDMMSG): Likewise. + (__ASSUME_SENDMMSG_SOCKETCALL): Remove macro. + * sysdeps/unix/sysv/linux/sendmmsg.c (__sendmmsg): Define using + sendmmsg syscall if that can be assumed to be present, socketcall + otherwise, with no fallback for runtime failure. + + * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_RECVMMSG_SYSCALL): Define unconditionally. (__ASSUME_RECVMMSG_SOCKETCALL): Remove macro. (__ASSUME_RECVMMSG): Likewise. |