diff options
Diffstat (limited to 'usr.bin/wall')
-rw-r--r-- | usr.bin/wall/wall.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/usr.bin/wall/wall.c b/usr.bin/wall/wall.c index 35d6463..1a1d2a3 100644 --- a/usr.bin/wall/wall.c +++ b/usr.bin/wall/wall.c @@ -81,6 +81,19 @@ int nobanner; int mbufsize; char *mbuf; +static int +ttystat(char *line, int sz) +{ + struct stat sb; + char ttybuf[MAXPATHLEN]; + + (void)snprintf(ttybuf, sizeof(ttybuf), "%s%.*s", _PATH_DEV, sz, line); + if (stat(ttybuf, &sb) == 0) { + return (0); + } else + return (-1); +} + int main(int argc, char *argv[]) { @@ -140,6 +153,8 @@ main(int argc, char *argv[]) while (fread((char *)&utmp, sizeof(utmp), 1, fp) == 1) { if (!utmp.ut_name[0]) continue; + if (ttystat(utmp.ut_line, UT_LINESIZE) != 0) + continue; if (grouplist) { ingroup = 0; strlcpy(username, utmp.ut_name, sizeof(utmp.ut_name)); |