svn commit: r291328 - head/usr.sbin/syslogd
Kurt Lidl
lidl at FreeBSD.org
Wed Nov 25 20:01:13 UTC 2015
Author: lidl
Date: Wed Nov 25 20:01:11 2015
New Revision: 291328
URL: https://svnweb.freebsd.org/changeset/base/291328
Log:
Have syslogd honor 'mesg' status when logging to users.
PR: bin/196742
Submitted by: jef at mail acme com
Approved by: rpaulo (mentor)
Differential Revision: https://reviews.freebsd.org/D4270
Modified:
head/usr.sbin/syslogd/syslogd.c
Modified: head/usr.sbin/syslogd/syslogd.c
==============================================================================
--- head/usr.sbin/syslogd/syslogd.c Wed Nov 25 19:49:55 2015 (r291327)
+++ head/usr.sbin/syslogd/syslogd.c Wed Nov 25 20:01:11 2015 (r291328)
@@ -341,6 +341,7 @@ static void printsys(char *);
static int p_open(const char *, pid_t *);
static void readklog(void);
static void reapchild(int);
+static const char *ttymsg_check(struct iovec *, int, char *, int);
static void usage(void);
static int validate(struct sockaddr *, const char *);
static void unmapped(struct sockaddr *);
@@ -1425,7 +1426,7 @@ wallmsg(struct filed *f, struct iovec *i
if (!f->f_un.f_uname[i][0])
break;
if (!strcmp(f->f_un.f_uname[i], ut->ut_user)) {
- if ((p = ttymsg(iov, iovlen, ut->ut_line,
+ if ((p = ttymsg_check(iov, iovlen, ut->ut_line,
TTYMSGTIME)) != NULL) {
errno = 0; /* already in msg */
logerror(p);
@@ -1438,6 +1439,29 @@ wallmsg(struct filed *f, struct iovec *i
reenter = 0;
}
+/*
+ * Wrapper routine for ttymsg() that checks the terminal for messages enabled.
+ */
+static const char *
+ttymsg_check(struct iovec *iov, int iovcnt, char *line, int tmout)
+{
+ static char device[1024];
+ static char errbuf[1024];
+ struct stat sb;
+
+ (void) snprintf(device, sizeof(device), "%s%s", _PATH_DEV, line);
+
+ if (stat(device, &sb) < 0) {
+ (void) snprintf(errbuf, sizeof(errbuf),
+ "%s: %s", device, strerror(errno));
+ return (errbuf);
+ }
+ if ((sb.st_mode & S_IWGRP) == 0)
+ /* Messages disabled. */
+ return (NULL);
+ return ttymsg(iov, iovcnt, line, tmout);
+}
+
static void
reapchild(int signo __unused)
{
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