Let w(1) use utmpx.
We don't have UT_*SIZE anymore. One of the reasons for that is because all strings are null terminated, there is no need for apps to copy strings out of the utmpx structure. This means we can define W_DISP*SIZE lengths for all columns. While there, adjust the sizes a little. Steal some bytes from the username column, while extending the hostname column quite a bit.
This commit is contained in:
Ed Schouten
parent
066f913a94
commit
dc65bcacb2
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=200172
@ -4,8 +4,8 @@
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PROG= w
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SRCS= fmt.c pr_time.c proc_compare.c w.c
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MAN= w.1 uptime.1
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DPADD= ${LIBKVM} ${LIBUTIL}
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LDADD= -lkvm -lutil
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DPADD= ${LIBKVM} ${LIBULOG} ${LIBUTIL}
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LDADD= -lkvm -lulog -lutil
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#BINGRP= kmem
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#BINMODE=2555
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LINKS= ${BINDIR}/w ${BINDIR}/uptime
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@ -83,14 +83,15 @@ static const char sccsid[] = "@(#)w.c 8.4 (Berkeley) 4/16/94";
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#include <stdlib.h>
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#include <string.h>
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#include <timeconv.h>
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#define _ULOG_POSIX_NAMES
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#include <ulog.h>
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#include <unistd.h>
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#include <utmp.h>
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#include <vis.h>
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#include "extern.h"
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struct timeval boottime;
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struct utmp utmp;
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struct utmpx *utmp;
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struct winsize ws;
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kvm_t *kd;
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time_t now; /* the current time of day */
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@ -109,7 +110,7 @@ char **sel_users; /* login array of particular users selected */
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*/
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struct entry {
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struct entry *next;
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struct utmp utmp;
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struct utmpx utmp;
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dev_t tdev; /* dev_t of terminal */
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time_t idle; /* idle time of terminal in seconds */
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struct kinfo_proc *kp; /* `most interesting' proc */
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@ -119,11 +120,12 @@ struct entry {
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#define debugproc(p) *((struct kinfo_proc **)&(p)->ki_udata)
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/* W_DISPHOSTSIZE should not be greater than UT_HOSTSIZE */
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#define W_DISPHOSTSIZE 16
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#define W_DISPUSERSIZE 10
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#define W_DISPLINESIZE 8
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#define W_DISPHOSTSIZE 24
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static void pr_header(time_t *, int);
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static struct stat *ttystat(char *, int);
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static struct stat *ttystat(char *);
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static void usage(int);
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static int this_is_uptime(const char *s);
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@ -135,7 +137,6 @@ main(int argc, char *argv[])
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struct kinfo_proc *kp;
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struct kinfo_proc *dkp;
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struct stat *stp;
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FILE *ut;
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time_t touched;
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int ch, i, nentries, nusers, wcmd, longidle, longattime, dropgid;
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const char *memf, *nlistf, *p;
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@ -208,16 +209,15 @@ main(int argc, char *argv[])
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errx(1, "%s", errbuf);
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(void)time(&now);
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if ((ut = fopen(_PATH_UTMP, "r")) == NULL)
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err(1, "%s", _PATH_UTMP);
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if (*argv)
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sel_users = argv;
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for (nusers = 0; fread(&utmp, sizeof(utmp), 1, ut);) {
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if (utmp.ut_name[0] == '\0')
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setutxent();
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for (nusers = 0; (utmp = getutxent()) != NULL;) {
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if (utmp->ut_type != USER_PROCESS)
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continue;
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if (!(stp = ttystat(utmp.ut_line, UT_LINESIZE)))
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if (!(stp = ttystat(utmp->ut_line)))
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continue; /* corrupted record */
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++nusers;
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if (wcmd == 0)
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@ -228,7 +228,7 @@ main(int argc, char *argv[])
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usermatch = 0;
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for (user = sel_users; !usermatch && *user; user++)
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if (!strncmp(utmp.ut_name, *user, UT_NAMESIZE))
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if (!strcmp(utmp->ut_user, *user))
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usermatch = 1;
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if (!usermatch)
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continue;
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@ -237,7 +237,7 @@ main(int argc, char *argv[])
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errx(1, "calloc");
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*nextp = ep;
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nextp = &ep->next;
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memmove(&ep->utmp, &utmp, sizeof(struct utmp));
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memmove(&ep->utmp, utmp, sizeof *utmp);
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ep->tdev = stp->st_rdev;
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/*
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* If this is the console device, attempt to ascertain
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@ -250,14 +250,14 @@ main(int argc, char *argv[])
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(void)sysctlbyname("machdep.consdev", &ep->tdev, &size, NULL, 0);
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}
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touched = stp->st_atime;
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if (touched < ep->utmp.ut_time) {
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if (touched < ep->utmp.ut_tv.tv_sec) {
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/* tty untouched since before login */
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touched = ep->utmp.ut_time;
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touched = ep->utmp.ut_tv.tv_sec;
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}
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if ((ep->idle = now - touched) < 0)
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ep->idle = 0;
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}
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(void)fclose(ut);
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endutxent();
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if (header || wcmd == 0) {
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pr_header(&now, nusers);
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@ -271,11 +271,11 @@ main(int argc, char *argv[])
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#define HEADER_FROM "FROM"
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#define HEADER_LOGIN_IDLE "LOGIN@ IDLE "
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#define HEADER_WHAT "WHAT\n"
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#define WUSED (UT_NAMESIZE + UT_LINESIZE + W_DISPHOSTSIZE + \
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#define WUSED (W_DISPUSERSIZE + W_DISPLINESIZE + W_DISPHOSTSIZE + \
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sizeof(HEADER_LOGIN_IDLE) + 3) /* header width incl. spaces */
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(void)printf("%-*.*s %-*.*s %-*.*s %s",
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UT_NAMESIZE, UT_NAMESIZE, HEADER_USER,
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UT_LINESIZE, UT_LINESIZE, HEADER_TTY,
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W_DISPUSERSIZE, W_DISPUSERSIZE, HEADER_USER,
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W_DISPLINESIZE, W_DISPLINESIZE, HEADER_TTY,
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W_DISPHOSTSIZE, W_DISPHOSTSIZE, HEADER_FROM,
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HEADER_LOGIN_IDLE HEADER_WHAT);
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}
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@ -347,7 +347,6 @@ main(int argc, char *argv[])
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}
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for (ep = ehead; ep != NULL; ep = ep->next) {
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char host_buf[UT_HOSTSIZE + 1];
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struct addrinfo hints, *res;
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struct sockaddr_storage ss;
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struct sockaddr *sa = (struct sockaddr *)&ss;
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@ -356,9 +355,7 @@ main(int argc, char *argv[])
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time_t t;
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int isaddr;
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host_buf[UT_HOSTSIZE] = '\0';
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strncpy(host_buf, ep->utmp.ut_host, UT_HOSTSIZE);
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p = *host_buf ? host_buf : "-";
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p = *ep->utmp.ut_host ? ep->utmp.ut_host : "-";
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if ((x_suffix = strrchr(p, ':')) != NULL) {
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if ((dot = strchr(x_suffix, '.')) != NULL &&
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strchr(dot+1, '.') == NULL)
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@ -419,13 +416,13 @@ main(int argc, char *argv[])
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}
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}
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(void)printf("%-*.*s %-*.*s %-*.*s ",
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UT_NAMESIZE, UT_NAMESIZE, ep->utmp.ut_name,
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UT_LINESIZE, UT_LINESIZE,
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W_DISPUSERSIZE, W_DISPUSERSIZE, ep->utmp.ut_user,
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W_DISPLINESIZE, W_DISPLINESIZE,
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strncmp(ep->utmp.ut_line, "tty", 3) &&
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strncmp(ep->utmp.ut_line, "cua", 3) ?
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ep->utmp.ut_line : ep->utmp.ut_line + 3,
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W_DISPHOSTSIZE, W_DISPHOSTSIZE, *p ? p : "-");
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t = _time_to_time32(ep->utmp.ut_time);
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t = ep->utmp.ut_tv.tv_sec;
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longattime = pr_attime(&t, &now);
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longidle = pr_idle(ep->idle);
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(void)printf("%.*s\n", argwidth - longidle - longattime,
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@ -496,12 +493,12 @@ pr_header(time_t *nowp, int nusers)
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}
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static struct stat *
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ttystat(char *line, int sz)
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ttystat(char *line)
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{
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static struct stat sb;
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char ttybuf[MAXPATHLEN];
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(void)snprintf(ttybuf, sizeof(ttybuf), "%s%.*s", _PATH_DEV, sz, line);
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(void)snprintf(ttybuf, sizeof(ttybuf), "%s%s", _PATH_DEV, line);
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if (stat(ttybuf, &sb) == 0) {
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return (&sb);
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} else
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