diff options
Diffstat (limited to 'misc.c')
| -rw-r--r-- | misc.c | 28 |
1 files changed, 27 insertions, 1 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: misc.c,v 1.105 2016/07/15 00:24:30 djm Exp $ */ +/* $OpenBSD: misc.c,v 1.107 2016/11/30 00:28:31 dtucker Exp $ */ /* * Copyright (c) 2000 Markus Friedl. All rights reserved. * Copyright (c) 2005,2006 Damien Miller. All rights reserved. @@ -1243,3 +1243,29 @@ forward_equals(const struct Forward *a, const struct Forward *b) return 1; } +/* returns 1 if bind to specified port by specified user is permitted */ +int +bind_permitted(int port, uid_t uid) +{ + if (port < IPPORT_RESERVED && uid != 0) + return 0; + return 1; +} + +/* returns 1 if process is already daemonized, 0 otherwise */ +int +daemonized(void) +{ + int fd; + + if ((fd = open(_PATH_TTY, O_RDONLY | O_NOCTTY)) >= 0) { + close(fd); + return 0; /* have controlling terminal */ + } + if (getppid() != 1) + return 0; /* parent is not init */ + if (getsid(0) != getpid()) + return 0; /* not session leader */ + debug3("already daemonized"); + return 1; +} |