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NFSD: Refactor socket creation out of __write_ports()

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Clean up: Refactor the socket creation logic out of __write_ports() to
make it easier to understand and maintain.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Chuck Lever 2009-04-23 19:31:55 -04:00 committed by J. Bruce Fields
parent 82d565919a
commit 0b7c2f6fc7
1 changed files with 34 additions and 30 deletions
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64
fs/nfsd/nfsctl.c
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@ -910,6 +910,37 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
return rv;
}
/*
* A single 'fd' number was written, in which case it must be for
* a socket of a supported family/protocol, and we use it as an
* nfsd listener.
*/
static ssize_t __write_ports_addfd(char *buf)
{
char *mesg = buf;
int fd, err;
err = get_int(&mesg, &fd);
if (err != 0 || fd < 0)
return -EINVAL;
err = nfsd_create_serv();
if (err != 0)
return err;
err = svc_addsock(nfsd_serv, fd, buf);
if (err >= 0) {
err = lockd_up();
if (err < 0)
svc_sock_names(buf + strlen(buf) + 1, nfsd_serv, buf);
/* Decrease the count, but don't shut down the service */
nfsd_serv->sv_nrthreads--;
}
return err < 0 ? err : 0;
}
/*
* A '-' followed by the 'name' of a socket means we close the socket.
*/
@ -995,36 +1026,9 @@ static ssize_t __write_ports(struct file *file, char *buf, size_t size)
len = svc_xprt_names(nfsd_serv, buf, 0);
return len;
}
/* Either a single 'fd' number is written, in which
* case it must be for a socket of a supported family/protocol,
* and we use it as an nfsd socket, or
* A '-' followed by the 'name' of a socket in which case
* we close the socket.
*/
if (isdigit(buf[0])) {
char *mesg = buf;
int fd;
int err;
err = get_int(&mesg, &fd);
if (err)
return -EINVAL;
if (fd < 0)
return -EINVAL;
err = nfsd_create_serv();
if (!err) {
err = svc_addsock(nfsd_serv, fd, buf);
if (err >= 0) {
err = lockd_up();
if (err < 0)
svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf);
}
/* Decrease the count, but don't shutdown the
* the service
*/
nfsd_serv->sv_nrthreads--;
}
return err < 0 ? err : 0;
}
if (isdigit(buf[0]))
return __write_ports_addfd(buf);
if (buf[0] == '-' && isdigit(buf[1]))
return __write_ports_delfd(buf);