📄 linux网络代码导读v0.2（绝对经典，强烈推荐）.mht
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FMODE_WRITE=CE=AAtrue=A3=A9=A3=AC=B1=E3=B5=F7=D3=C3=B4=CB=CE=C4=BC=FE=
=BD=E1=B9=B9=B5=C4=D0=B4=B2=D9=D7=F7=A3=BA<BR> =20
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...<BR> =20
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if (file->f_op && (write =3D=20
file->f_op->write) !=3D NULL)<BR> =
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ret =
=3D=20
write(file, buf, count, =
&file->f_pos);<BR> =20
=
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... <BR><BR> =
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=C6=E4=D6=D0f_op=CA=C7=B8=F6struct =
<BR> =20
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file_operations=BD=E1=B9=B9=D6=B8=D5=EB=A3=AC=D4=DAsock_map_fd=D6=D0=
=BD=AB=C6=E4=D6=B8=CF=F2socket_file_ops=A3=AC=C6=E4=B6=A8=D2=E5=C8=E7=CF=C2=
=A3=A8/net/socket.c=A3=A9=A3=BA<BR> =20
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static struct file_operations =
socket_file_ops =3D {<BR> =
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=
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llseek: =20
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sock_lseek,<BR> =20
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read: =
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sock_read,<BR> =
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write: =20
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sock_write,<BR> =20
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poll: =
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sock_poll,<BR> =
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ioctl: =20
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sock_ioctl,<BR> =20
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mmap: =
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sock_mmap,<BR> =
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open: =20
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sock_no_open, /* =
special=20
open code <BR> =20
to =
disallow=20
open via /proc */<BR> =
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=
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release: =20
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sock_close,<BR> =20
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fasync: =20
sock_fasync,<BR> =
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readv: =20
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sock_readv,<BR> =20
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writev: =20
sock_writev<BR> =
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=
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};<BR><BR> =
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=
=B4=CB=CA=B1wirte=BA=AF=CA=FD=D6=B8=D5=EB=CF=D4=C8=BB=D6=B8=CF=F2=C1=
=CBsock_write=A3=AC=CE=D2=C3=C7=B8=FA=CF=C2=C8=A5=BF=B4,=B4=CB=BA=AF=CA=FD=
=BD=AB=D2=BB=B8=F6=D7=D6=B7=FB=B4=AE=BB=BA=B3=E5=D5=FB=C0=ED=B3=C9struct =
<BR> =
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=
msghdr=A3=AC=D7=EE=BA=F3=B5=F7=D3=C3=C1=CBsock_sendmsg.<BR><BR>&nbs=
p;=20
=
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=
sock_sendmsg=D6=D0=B5=C4scm_send=CE=D2=B2=BB=C1=CB=BD=E2=A3=A8scm=CA=
=C7Socket=20
level control <BR> =
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messages=B5=C4=BC=F2=D0=B4=A3=A9=A3=AC=BA=C3=D4=DA=CB=FC=D2=B2=B2=BB=
=CA=C7=BA=DC=B9=D8=BC=FC=A3=AC=CE=D2=C3=C7=D7=A2=D2=E2=B5=BD=D5=E2=BE=E4=A3=
=BA<BR> =20
=
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...<BR> =20
=
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sock->ops->sendmsg(sock, msg, size,=20
&scm);<BR> =20
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...<BR><BR> =
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=D3=D6=CA=C7=B8=F6=BA=AF=CA=FD=D6=B8=D5=EB=A3=ACsock->ops=D4=DAi=
net_create=A3=A8=A3=A9=BA=AF=CA=FD=D6=D0=B1=BB=B3=F5=CA=BC=BB=AF=A3=AC=D3=
=C9=D3=DA=CE=D2=C3=C7=CE=D2=C3=C7=CA=C7UDP=B5=C4=CC=D7=BD=D3=D7=D6=A3=ACs=
ock->ops=D6=B8=CF=F2=C1=CBinet_dgram_ops=A3=A8=BC=B4sock->ops=20
<BR> =
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=3D=20
=
&inet_dgram_ops;=A3=A9=A3=AC=C6=E4=B6=A8=D2=E5=D4=DAnet/ipv4/Af_inet.=
c=D6=D0=A3=BA<BR> =20
=
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struct proto_ops =
inet_dgram_ops =3D=20
{<BR> =
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=
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family: =20
PF_INET,<BR><BR> =
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=
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release: =20
inet_release,<BR> =
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=
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bind: =20
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inet_bind,<BR> =
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connect: =20
inet_dgram_connect,<BR> =20
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socketpair: =20
sock_no_socketpair,<BR> =20
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accept: =20
sock_no_accept,<BR> =20
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getname: =20
inet_getname, <BR> =
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poll: =20
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datagram_poll,<BR> =
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=
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ioctl: =20
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inet_ioctl,<BR> =20
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listen: =20
sock_no_listen,<BR> =20
=
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shutdown: =
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inet_shutdown,<BR> =
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=
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setsockopt: =
inet_setsockopt,<BR> =20
=
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getsockopt: =20
inet_getsockopt,<BR> =20
=
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sendmsg: =20
inet_sendmsg,<BR> =
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=
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recvmsg: =20
inet_recvmsg,<BR> =
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=
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mmap: =20
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sock_no_mmap,<BR> =
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=
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};<BR><BR> =
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=
=D2=F2=B4=CB=CE=D2=C3=C7=D2=AA=BF=B4=B5=C3=B1=E3=CA=C7inet_sendmsg=A3=
=A8=A3=A9=BA=AF=CA=FD=C1=CB=A3=AC=B6=F8=C2=ED=C9=CF=A3=AC=D5=E2=B8=F6=BA=AF=
=CA=FD=D3=D6=CD=A8=B9=FD=BA=AF=CA=FD=D6=B8=D5=EB=B5=F7=D3=C3=C1=CB=C1=ED=D2=
=BB=BA=AF=CA=FD=A3=BA<BR> =20
=
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...<BR> =20
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