diff options
Diffstat (limited to 'usr.bin/who/who.c')
| -rw-r--r-- | usr.bin/who/who.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/usr.bin/who/who.c b/usr.bin/who/who.c index 27b6896..f94fcdb 100644 --- a/usr.bin/who/who.c +++ b/usr.bin/who/who.c @@ -27,6 +27,7 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#include <sys/param.h> #include <sys/types.h> #include <sys/ioctl.h> #include <sys/stat.h> @@ -203,14 +204,31 @@ row(struct utmp *ut) putchar('\n'); } +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); +} + static void process_utmp(FILE *fp) { struct utmp ut; - while (fread(&ut, sizeof(ut), 1, fp) == 1) - if (*ut.ut_name != '\0') - row(&ut); + while (fread(&ut, sizeof(ut), 1, fp) == 1) { + if (*ut.ut_name == '\0') + continue; + if (ttystat(ut.ut_line, UT_LINESIZE) != 0) + continue; + row(&ut); + } } static void |
