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Fix address annotation in xml output from w

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The libxo xml feature of adding an annotation with the "original"
address from the utmpx file if it is different than the final "from"
field was broken by r351379. This was pointed out by the gcc error
that save_p might be used uninitialized. Save the original address
as needed in each entry, don't just use the last one from the previous
loop.

Reviewed by:	marcel@
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D21390
This commit is contained in:
Mike Karels 2019-08-29 02:44:18 +00:00
parent e08087ee43
commit ae3353515b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=351592
1 changed files with 5 additions and 3 deletions
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8
usr.bin/w/w.c
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@ -118,6 +118,7 @@ static struct entry {
char *args; /* arg list of interesting process */
struct kinfo_proc *dkp; /* debug option proc list */
char *from; /* "from": name or addr */
char *save_from; /* original "from": name or addr */
} *ep, *ehead = NULL, **nextp = &ehead;
#define debugproc(p) *(&((struct kinfo_proc *)p)->ki_udata)
@ -209,7 +210,6 @@ main(int argc, char *argv[])
if (*argv)
sel_users = argv;
save_p = NULL;
setutxent();
for (nusers = 0; (utmp = getutxent()) != NULL;) {
struct addrinfo hints, *res;
@ -312,6 +312,8 @@ main(int argc, char *argv[])
ep->from = strdup(p);
if ((i = strlen(p)) > fromwidth)
fromwidth = i;
if (save_p != p)
ep->save_from = strdup(save_p);
}
endutxent();
@ -451,8 +453,8 @@ main(int argc, char *argv[])
strncmp(ep->utmp.ut_line, "cua", 3) ?
ep->utmp.ut_line : ep->utmp.ut_line + 3) : "-");
if (save_p && save_p != p)
xo_attr("address", "%s", save_p);
if (ep->save_from)
xo_attr("address", "%s", ep->save_from);
xo_emit("{:from/%-*.*s/%@**@s} ",
fromwidth, fromwidth, ep->from);
t = ep->utmp.ut_tv.tv_sec;