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authorJoseph Myers <joseph@codesourcery.com>2017-05-09 20:01:52 +0000
committerJoseph Myers <joseph@codesourcery.com>2017-05-09 20:01:52 +0000
commit0cb5da5c09e2b2eb47348d110282b92ec27eedf5 (patch)
tree52372d318cc72f03ad9690fbb78dafa2f3e7572e /ChangeLog
parent9a45f54310573c190fa270e1f80d8307750305e9 (diff)
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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.
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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.