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The recvmmsg and sendmmsg is very important for UDP stream application.
If we only use recvmsg for UDP stream, it will only copy one mtu size
of data in a syscall. And recvmmsg copy as many as you want in a syscall.
So recvmmsg is more efficient,and some applications will depends on the
recvmmsg and sendmmsg, eg: UDP media stream player.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
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The changeset 9dea5dc921b5f4045a18c63eb92e84dc274d17eb in the Linux kernel
expose the direct syscalls for sockets. For example udhcpc then will use sendto
syscall directly and get an EINVAL error. Disable direct syscalls as it was done
for SPARC in the past. Musl and GNU libc are not affected, as they already
disable direct socket syscalls on i386.
Reported-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
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This commit 1e2e4ac6193ffe0900bd392fa3c596883771eb34 breaks networking
on sparc systems. In Linux the socket functions are declared, but not
implemented and must be routed through socketcall().
Tested via Qemu 2.0.0.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Fixes a build error:
In file included from libc/inet/recv.c:8:0:
libc/inet/socketcalls.c: In function '__recv_nocancel':
libc/inet/socketcalls.c:203:57: error: 'NULL' undeclared (first use in this function)
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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__socketcall.c: remove guard, we definitely need this syscall
Re-added guard plus added comment (Bernhard)
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Make socketcall the last alternative.
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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.. and add proper prototype, move it into it's own obj and other such
cleanups.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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For those archs that provide non multiplexed socket calls
it possible to implement the lib C wrappers without calling the
multi-purpose __socketcall. For a subset of these functions that
are cancellation point, it needs to correctly handle cancellation.
Signed-off-by: Francesco Rundo <francesco.rundo@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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sed -i -e '/Experimentally off - /d' $(grep -rl "Experimentally off - " *)
sed -i -e '/^\/\*[[:space:]]*libc_hidden_proto(/d' $(grep -rl "libc_hidden_proto" *)
should be a nop
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Now they are only enabled if linuxthreads.old are selected.
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__libc_accept __libc_close __libc_connect __libc_creat __libc_creat64
__libc_fsync __libc_lseek __libc_lseek64 __libc_msync __libc_nanosleep
__libc_open __libc_open64 __libc_pause __libc_read __libc_readv
__libc_recv __libc_recvfrom __libc_recvmsg
__libc_send __libc_sendmsg __libc_sendto
__libc_tcdrain __libc_wait __libc_waitpid __libc_write __libc_writev
They were removed from glibc 1 May 2004:
http://sources.redhat.com/ml/libc-hacker/2004-05/msg00001.html
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Appears to build fine (several .configs tried)
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like
o UCLIBC_HAS_GNU_ERROR
o UCLIBC_HAS_BSD_ERR
o UCLIBC_HAS_PTY
o UCLIBC_HAS_GETPT (1)
o UCLIBC_SYSCALL_STUBS
o UCLIBC_SYSCALL_STUB_WARNING
o UCLIBC_LINUX_SPECIFIC (2)
o UCLIBC_BSD_SPECIFIC (3)
o UCLIBC_NTP_LEGACY (4)
o UCLIBC_SV4_DEPRECATED (5)
o UCLIBC_HAVE_REALTIME (6)
o UCLIBC_HAVE_ADVANCED_REALTIME (7)
o UCLIBC_HAVE_EPOLL (8)
o UCLIBC_HAVE_XATTR (9)
o UCLIBC_HAVE_PROFILING (10)
(1) make non-standard getpt optional and implement standard posix_openpt
(2) fstatfs(), inotify_*(), ioperm(), iopl(), madvise(), modify_ldt(),
personality()
ppoll(), setresuid()
(3) mincore(), getdomainname(), setdomainname()
(4) ntp_adjtime(), ntp_gettime() aliases
(5) ustat() [use statfs(2) in your code instead]
(6) All marked as "(REALTIME)" in SUSv3
(7) All marked as "(ADVANCED REALTIME)" in SUSv3
(8) epoll_create(), epoll_ctl(), epoll_wait()
(9) all Extended Attributes
(10) helpers for gcc's -finstrument-functions
- Fixes _dl_exit()
- Implements sleep(3) for !UCLIBC_HAVE_REALTIME
- Implements usleep(3) for !UCLIBC_HAVE_REALTIME
- adds #warning about incorrect posix_fadvise{,64}()
- removes unused and unwanted uselib()
Net outcome is that an allnoconfig with HAVE_SHARED is now about 88k instead
of formerly 130k.
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missing headers, other jump relocs removed
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(same goes for recv/recvfrom)
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... so dont try using socketcall() unless the system call exists
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indicate it is (alledgedly) private.
-Erik
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not an int.
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the socketcall system call, but instead implement each fundamental
networking function directly as a system call.
-Erik
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proper threading. Most of this is from Stefan Soucek,
with additions and changes as needed from me.
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support for __FORCE_NOGLIBC per Brian Stafford
<brian.stafford@office-logic.com>
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