The problem is that fopen(tty, "w") uses O_CREAT. If we use open
+ fdopen we can avoid that.
Can you try this diff?
- todd
Index: libexec/comsat/comsat.c
===================================================================
RCS file: /cvs/src/libexec/comsat/comsat.c,v
retrieving revision 1.44
diff -u -p -u -r1.44 comsat.c
--- libexec/comsat/comsat.c 12 Oct 2015 16:54:30 -0000 1.44
+++ libexec/comsat/comsat.c 1 Apr 2016 22:19:13 -0000
@@ -234,6 +234,7 @@ static char *cr;
void
notify(struct utmp *utp, off_t offset)
{
+ int fd;
FILE *tp;
struct stat stb;
struct termios ttybuf;
@@ -257,7 +258,8 @@ notify(struct utmp *utp, off_t offset)
return;
(void)signal(SIGALRM, SIG_DFL);
(void)alarm(30);
- if ((tp = fopen(tty, "w")) == NULL) {
+ fd = open(tty, O_WRONLY);
+ if (fd == -1 || (tp = fdopen(fd, "w")) == NULL) {
dsyslog(LOG_ERR, "%s: %s", tty, strerror(errno));
_exit(1);
}
