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init.c: is_socket

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* ext/socket/init.c (is_socket): extract predicate to see if the
  given fd is a socket.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52605 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-11-17 02:15:55 +00:00
parent 8478b30267
commit afe142997b
1 changed files with 16 additions and 11 deletions
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27
ext/socket/init.c
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@ -42,24 +42,29 @@ rsock_raise_socket_error(const char *reason, int error)
rb_raise(rb_eSocket, "%s: %s", reason, gai_strerror(error));
}
VALUE
rsock_init_sock(VALUE sock, int fd)
#ifdef _WIN32
#define is_socket(fd) rb_w32_is_socket(fd)
#else
static int
is_socket(int fd)
{
rb_io_t *fp;
#ifndef _WIN32
struct stat sbuf;
if (fstat(fd, &sbuf) < 0)
rb_sys_fail("fstat(2)");
rb_update_max_fd(fd);
if (!S_ISSOCK(sbuf.st_mode))
rb_raise(rb_eArgError, "not a socket file descriptor");
#else
rb_update_max_fd(fd);
if (!rb_w32_is_socket(fd))
rb_raise(rb_eArgError, "not a socket file descriptor");
return S_ISSOCK(sbuf.st_mode);
}
#endif
VALUE
rsock_init_sock(VALUE sock, int fd)
{
rb_io_t *fp;
rb_update_max_fd(fd);
if (!is_socket(fd))
rb_raise(rb_eArgError, "not a socket file descriptor");
MakeOpenFile(sock, fp);
fp->fd = fd;
fp->mode = FMODE_READWRITE|FMODE_DUPLEX;