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Diffstat (limited to 'solenv/lockfile/lockfile.h')
| -rw-r--r-- | solenv/lockfile/lockfile.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/solenv/lockfile/lockfile.h b/solenv/lockfile/lockfile.h new file mode 100644 index 000000000..f2f72022f --- /dev/null +++ b/solenv/lockfile/lockfile.h @@ -0,0 +1,72 @@ +/* + * Copyright (C) 1999 Miquel van Smoorenburg + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * On Debian GNU/Linux systems, the complete text of the GNU Library + * General Public License can be found in `/usr/doc/copyright/LGPL'. + * You can also find a copy on the GNU website at http://www.gnu.org/ + */ +#ifndef LOCKFILE_H_ +#define LOCKFILE_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Prototypes. + */ +int lockfile_create(const char *lockfile, int retries, int flags); +int lockfile_remove(const char *lockfile); +int lockfile_touch(const char *lockfile); +int lockfile_check(const char *lockfile, int flags); + +/* + * Return values for lockfile_create() + */ +#define L_SUCCESS 0 /* Lockfile created */ +#define L_NAMELEN 1 /* Recipient name too long */ +#define L_TMPLOCK 2 /* Error creating temp lockfile */ +#define L_TMPWRITE 3 /* Can't write pid into temp lockfile */ +#define L_MAXTRYS 4 /* Failed after max. number of attempts */ +#define L_ERROR 5 /* Unknown error; check errno */ +#define L_MANLOCK 6 /* Cannot set mandatory lock on tempfile */ +#define L_ORPHANED 7 /* Called with L_PPID but parent is gone */ +#define L_RMSTALE 8 /* Failed to remove stale lockfile */ + +/* + * Flag values for lockfile_create() + */ +#define L_PID 16 /* Put PID in lockfile */ +#define L_PPID 32 /* Put PPID in lockfile */ + +/* + * Experimental. + */ +struct lockargs_s_ { + int interval; /* Static interval between retries */ +}; +#define L_INTERVAL_D_ 64 /* Specify consistent retry interval */ +#ifdef LOCKFILE_EXPERIMENTAL +#define lockargs lockargs_s_ +#define L_INTERVAL L_INTERVAL_D_ +int lockfile_create2(const char *lockfile, int retries, + int flags, struct lockargs *args, int args_sz); +#endif + +#ifndef LIB +int check_sleep(int, int); +#endif +int is_maillock(const char *lockfile); +int lockfile_create_set_tmplock(const char *lockfile, volatile char **tmplock, + int retries, int flags, const struct lockargs_s_ *); + +#ifdef __cplusplus +} +#endif + +#endif /* _LOCKFILE_H */ |