[email protected] (Jérémie Courrèges-Anglas) writes:
> Florian Obser <[email protected]> writes:
>
>> On Tue, Apr 22, 2014 at 03:08:45PM -0400, [email protected] wrote:
>>> Thanks Florian & team.
>>>
>>> Please review the following diff.
>>
>> tab vs. space, more in sync with ping6
>> OK?
>
> ok.
Some changes I'd like:
- I find fdmaskp badly named, a remnant of when select was used
- recvfrom returns an ssize_t, cc shouldn't be (ab)used for poll's
return value.
- the scope of cc, fdmaskp/pfd and timeout can be reduced
- add a bit more of whitespace to make things more readable
Index: ping/ping.c
===================================================================
RCS file: /cvs/src/sbin/ping/ping.c,v
retrieving revision 1.101
diff -u -p -r1.101 ping.c
--- ping/ping.c 23 Apr 2014 12:27:31 -0000 1.101
+++ ping/ping.c 23 Apr 2014 13:01:01 -0000
@@ -178,10 +178,8 @@ main(int argc, char *argv[])
{
struct hostent *hp;
struct sockaddr_in *to;
- struct pollfd fdmaskp[1];
struct in_addr saddr;
- int i, ch, hold = 1, packlen, preload, maxsize, df = 0, tos = 0;
- int timeout;
+ int ch, hold = 1, i, packlen, preload, maxsize, df = 0, tos = 0;
u_char *datap, *packet, ttl = MAXTTL, loop = 1;
char *target, hnamebuf[MAXHOSTNAMELEN];
#ifdef IP_OPTIONS
@@ -509,26 +507,31 @@ main(int argc, char *argv[])
for (;;) {
struct sockaddr_in from;
- sigset_t omask, nmask;
- socklen_t fromlen;
- int cc;
+ sigset_t omask, nmask;
+ socklen_t fromlen;
+ struct pollfd pfd;
+ ssize_t cc;
+ int ret, timeout;
if (options & F_FLOOD) {
pinger();
timeout = 10;
} else
timeout = INFTIM;
- fdmaskp[0].fd = s;
- fdmaskp[0].events = POLLIN;
- cc = poll(fdmaskp, 1, timeout);
- if (cc < 0) {
+
+ pfd.fd = s;
+ pfd.events = POLLIN;
+
+ ret = poll(&pfd, 1, timeout);
+ if (ret < 0) {
if (errno != EINTR) {
warn("poll");
sleep(1);
}
continue;
- } else if (cc == 0)
+ } else if (ret == 0)
continue;
+
fromlen = sizeof(from);
if ((cc = recvfrom(s, packet, packlen, 0,
(struct sockaddr *)&from, &fromlen)) < 0) {
Index: ping6/ping6.c
===================================================================
RCS file: /cvs/src/sbin/ping6/ping6.c,v
retrieving revision 1.88
diff -u -p -r1.88 ping6.c
--- ping6/ping6.c 10 Jan 2014 21:57:44 -0000 1.88
+++ ping6/ping6.c 23 Apr 2014 13:01:07 -0000
@@ -250,11 +250,8 @@ main(int argc, char *argv[])
{
struct itimerval itimer;
struct sockaddr_in6 from;
- int timeout;
struct addrinfo hints;
- struct pollfd fdmaskp[1];
- int cc, i;
- int ch, hold, packlen, preload, optval, ret_ga;
+ int ch, hold, i, packlen, preload, optval, ret_ga;
u_char *datap, *packet;
char *e, *target, *ifname = NULL, *gateway = NULL;
const char *errstr;
@@ -887,12 +884,15 @@ main(int argc, char *argv[])
#endif
for (;;) {
- struct msghdr m;
+ struct msghdr m;
union {
struct cmsghdr hdr;
u_char buf[CMSG_SPACE(1024)];
- } cmsgbuf;
- struct iovec iov[2];
+ } cmsgbuf;
+ struct iovec iov[2];
+ struct pollfd pfd;
+ ssize_t cc;
+ int ret, timeout;
/* signal handling */
if (seenalrm) {
@@ -918,16 +918,18 @@ main(int argc, char *argv[])
timeout = 10;
} else
timeout = INFTIM;
- fdmaskp[0].fd = s;
- fdmaskp[0].events = POLLIN;
- cc = poll(fdmaskp, 1, timeout);
- if (cc < 0) {
+
+ pfd.fd = s;
+ pfd.events = POLLIN;
+
+ ret = poll(&pfd, 1, timeout);
+ if (ret < 0) {
if (errno != EINTR) {
warn("poll");
sleep(1);
}
continue;
- } else if (cc == 0)
+ } else if (ret == 0)
continue;
m.msg_name = &from;
--
jca | PGP : 0x1524E7EE / 5135 92C1 AD36 5293 2BDF DDCC 0DFA 74AE 1524 E7EE
