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Add functionality to only list hosts specified on the command line. If none

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are specified the old behaviour is old.  The submitted applied a much cleaner
diff to ruptime.c, however it did not cover cases like listing failures.  It
would probably be a good idea to move the printing from the ruptime function,
and have that function just be used to build the list, as that would unbreak
sorting, but this diff is intended to be clear, relative to the original
code.  As the sort order is the order specified on the command line, for now,
such is documented in the manual page accordingly.

Submitted by:	Edward J. M. Blocklesby <ejb@lythe.org.uk>
MFC after:	3 weeks
This commit is contained in:
Juli Mallett 2003-03-01 23:09:26 +00:00
parent 1a1e9f41e5
commit e7cb5ef774
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=111714
2 changed files with 108 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
usr.bin/ruptime/ruptime.1
View File

@ -41,6 +41,7 @@
.Sh SYNOPSIS
.Nm
.Op Fl alrtu
.Op Ar host ...
.Sh DESCRIPTION
The
.Nm
@ -49,6 +50,13 @@ utility gives a status line like
for each machine on the local network; these are formed from packets
broadcast by each host on the network once every three minutes.
.Pp
If no operands are given,
.Nm
displays uptime status for all machines;
otherwise only those hosts specified on the command line are displayed.
If hosts are specified on the command line, the sort order is equivalent
to the order hosts were specified on the command line.
.Pp
Machines for which no status report has been received for 11
minutes are shown as being down, and machines for which no status
report has been received for 4 days are not shown in the list at all.

174
usr.bin/ruptime/ruptime.c
View File

@ -70,11 +70,13 @@ struct whod awhod;
size_t nhosts;
time_t now;
int rflg = 1;
DIR *dirp;
int hscmp(const void *, const void *);
char *interval(time_t, const char *);
int lcmp(const void *, const void *);
void morehosts(void);
void ruptime(const char *, int, int (*)(const void *, const void *));
int tcmp(const void *, const void *);
int ucmp(const void *, const void *);
void usage(void);
@ -82,16 +84,8 @@ void usage(void);
int
main(int argc, char *argv[])
{
struct dirent *dp;
struct hs *hsp;
struct whod *wd;
struct whoent *we;
DIR *dirp;
size_t hspace;
int aflg, ch, fd, i, maxloadav;
char buf[sizeof(struct whod)];
int (*cmp)(const void *, const void *);
u_int cc;
int aflg, ch;
aflg = 0;
cmp = hscmp;
@ -118,74 +112,14 @@ main(int argc, char *argv[])
argc -= optind;
argv += optind;
if (argc != 0)
usage();
if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL)
err(1, "%s", _PATH_RWHODIR);
maxloadav = -1;
for (nhosts = hspace = 0; (dp = readdir(dirp)) != NULL;) {
if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5))
continue;
if ((fd = open(dp->d_name, O_RDONLY, 0)) < 0) {
warn("%s", dp->d_name);
continue;
}
cc = read(fd, buf, sizeof(struct whod));
(void)close(fd);
if (cc < WHDRSIZE)
continue;
if (nhosts == hspace) {
if ((hs =
realloc(hs, (hspace += 40) * sizeof(*hs))) == NULL)
err(1, NULL);
hsp = hs + nhosts;
}
if ((hsp->hs_wd = malloc((size_t)WHDRSIZE)) == NULL)
err(1, NULL);
memmove(hsp->hs_wd, buf, (size_t)WHDRSIZE);
for (wd = (struct whod *)buf, i = 0; i < 2; ++i)
if (wd->wd_loadav[i] > maxloadav)
maxloadav = wd->wd_loadav[i];
for (hsp->hs_nusers = 0,
we = (struct whoent *)(buf + cc); --we >= wd->wd_we;)
if (aflg || we->we_idle < 3600)
++hsp->hs_nusers;
++hsp;
++nhosts;
}
if (nhosts == 0)
errx(1, "no hosts in %s", _PATH_RWHODIR);
(void)time(&now);
qsort(hs, nhosts, sizeof(hs[0]), cmp);
for (i = 0; i < (int)nhosts; i++) {
hsp = &hs[i];
if (LEFTEARTH(hsp))
continue;
if (ISDOWN(hsp)) {
(void)printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname,
interval(now - hsp->hs_wd->wd_recvtime, "down"));
continue;
}
(void)printf(
"%-12.12s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n",
hsp->hs_wd->wd_hostname,
interval((time_t)hsp->hs_wd->wd_sendtime -
(time_t)hsp->hs_wd->wd_boottime, " up"),
hsp->hs_nusers,
hsp->hs_nusers == 1 ? ", " : "s,",
maxloadav >= 1000 ? 5 : 4,
hsp->hs_wd->wd_loadav[0] / 100.0,
maxloadav >= 1000 ? 5 : 4,
hsp->hs_wd->wd_loadav[1] / 100.0,
maxloadav >= 1000 ? 5 : 4,
hsp->hs_wd->wd_loadav[2] / 100.0);
ruptime(*argv, aflg, cmp);
while (*argv++ != NULL) {
if (*argv == NULL)
break;
ruptime(*argv, aflg, cmp);
}
exit(0);
}
@ -241,6 +175,98 @@ lcmp(const void *a1, const void *a2)
(HS(a2)->hs_wd->wd_loadav[0] - HS(a1)->hs_wd->wd_loadav[0]));
}
void
ruptime(const char *host, int aflg, int (*cmp)(const void *, const void *))
{
struct hs *hsp;
struct whod *wd;
struct whoent *we;
struct dirent *dp;
const char *hostname;
char buf[sizeof(struct whod)];
int fd, i, maxloadav;
size_t hspace;
u_int cc;
rewinddir(dirp);
hsp = NULL;
maxloadav = -1;
for (nhosts = hspace = 0; (dp = readdir(dirp)) != NULL;) {
if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5) != 0)
continue;
if ((fd = open(dp->d_name, O_RDONLY, 0)) < 0) {
warn("%s", dp->d_name);
continue;
}
cc = read(fd, buf, sizeof(struct whod));
(void)close(fd);
if (host != NULL) {
hostname = ((struct whod *)buf)->wd_hostname;
if (strcasecmp(hostname, host) != 0)
continue;
}
if (cc < WHDRSIZE)
continue;
if (nhosts == hspace) {
if ((hs =
realloc(hs, (hspace += 40) * sizeof(*hs))) == NULL)
err(1, NULL);
hsp = hs + nhosts;
}
if ((hsp->hs_wd = malloc((size_t)WHDRSIZE)) == NULL)
err(1, NULL);
memmove(hsp->hs_wd, buf, (size_t)WHDRSIZE);
for (wd = (struct whod *)buf, i = 0; i < 2; ++i)
if (wd->wd_loadav[i] > maxloadav)
maxloadav = wd->wd_loadav[i];
for (hsp->hs_nusers = 0,
we = (struct whoent *)(buf + cc); --we >= wd->wd_we;)
if (aflg || we->we_idle < 3600)
++hsp->hs_nusers;
++hsp;
++nhosts;
}
if (nhosts == 0) {
if (host == NULL)
errx(1, "no hosts in %s", _PATH_RWHODIR);
else
warnx("host %s not in %s", host, _PATH_RWHODIR);
}
(void)time(&now);
qsort(hs, nhosts, sizeof(hs[0]), cmp);
for (i = 0; i < (int)nhosts; i++) {
hsp = &hs[i];
if (LEFTEARTH(hsp))
continue;
if (ISDOWN(hsp)) {
(void)printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname,
interval(now - hsp->hs_wd->wd_recvtime, "down"));
continue;
}
(void)printf(
"%-12.12s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n",
hsp->hs_wd->wd_hostname,
interval((time_t)hsp->hs_wd->wd_sendtime -
(time_t)hsp->hs_wd->wd_boottime, " up"),
hsp->hs_nusers,
hsp->hs_nusers == 1 ? ", " : "s,",
maxloadav >= 1000 ? 5 : 4,
hsp->hs_wd->wd_loadav[0] / 100.0,
maxloadav >= 1000 ? 5 : 4,
hsp->hs_wd->wd_loadav[1] / 100.0,
maxloadav >= 1000 ? 5 : 4,
hsp->hs_wd->wd_loadav[2] / 100.0);
free(hsp->hs_wd);
}
free(hs);
hs = NULL;
}
/* Number of users comparison. */
int
ucmp(const void *a1, const void *a2)