Add a family of functions for reliable pidfiles handling.

Idea from:	jmg
Discussed on:	arch@

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/libutil/libutil.h b/lib/libutil/libutil.h
index 3042d0f..961fa1b 100644
--- a/lib/libutil/libutil.h
+++ b/lib/libutil/libutil.h
@@ -49,6 +49,16 @@ typedef struct _property {
 	char *value;
 } *properties;
 
+#ifdef _SYS_PARAM_H_
+/* for pidfile.c */
+struct pidfh {
+	int	pf_fd;
+	char	pf_path[MAXPATHLEN + 1];
+	__dev_t	pf_dev;
+	ino_t	pf_ino;
+};
+#endif
+
 /* Avoid pulling in all the include files for no need */
 struct termios;
 struct winsize;
@@ -102,6 +112,13 @@ struct passwd *pw_scan(const char *_line, int _flags);
 const char *pw_tempname(void);
 int	pw_tmp(int _mfd);
 #endif
+
+#ifdef _SYS_PARAM_H_
+struct pidfh *pidfile_open(const char *path, mode_t mode, pid_t *pidptr);
+int pidfile_write(struct pidfh *pfh);
+int pidfile_close(struct pidfh *pfh);
+int pidfile_remove(struct pidfh *pfh);
+#endif
 __END_DECLS
 
 #define UU_LOCK_INUSE (1)