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d556719e15
Console and tty descriptors are initially opened in parse_action() to
determine whether they are valid using isatty(). That descriptor is then
closed because it is never accessed by syslogd again; ttymsg() will reopen
the tty/console under a new descriptor when needed.
If the user attempts to log to a tty that is inactive outside of
syslogd, then syslogd must keep that descriptor open so the tty remains
accessible. For example, logging to `/dev/ttyvb` requires the initial
`/dev/ttyvb` descriptor to stay open so the user can view its buffer at
any time via CTRL+ALT+F12.
As a result, console and tty descriptors must remain open until a
potential configuration reload or a system shutdown. The given
descriptor will be closed in close_filed() in such circumstances.
PR: 274454
Fixes:
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|---|---|---|
| .. | ||
| tests | ||
| ftp.conf | ||
| lpr.conf | ||
| Makefile | ||
| Makefile.depend | ||
| pathnames.h | ||
| ppp.conf | ||
| syslog.conf | ||
| syslog.conf.5 | ||
| syslogd.8 | ||
| syslogd.c | ||