[BACK]Return to rumpclient.h CVS log [TXT][DIR] Up to [cvs.NetBSD.org] / src / lib / librumpclient

Annotation of src/lib/librumpclient/rumpclient.h, Revision 1.17

1.17    ! christos    1: /*     $NetBSD: rumpclient.h,v 1.16 2017/05/11 17:47:22 christos Exp $ */
1.1       pooka       2:
                      3: /*-
                      4:  * Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
                      5:  *
                      6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
                      9:  * 1. Redistributions of source code must retain the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer.
                     11:  * 2. Redistributions in binary form must reproduce the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer in the
                     13:  *    documentation and/or other materials provided with the distribution.
                     14:  *
                     15:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
                     16:  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
                     18:  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     19:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     20:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
                     21:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     22:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     23:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     24:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     25:  * SUCH DAMAGE.
                     26:  */
                     27:
                     28: #ifndef _RUMP_RUMPCLIENT_H_
                     29: #define _RUMP_RUMPCLIENT_H_
                     30:
1.5       pooka      31: #include <sys/types.h>
1.12      pooka      32:
                     33: #if !defined(__returns_twice)
                     34: #ifdef __GNUC__
                     35: #define __returns_twice __attribute__((__returns_twice__))
                     36: #else /* __GNUC__ */
                     37: #define __returns_twice
                     38: #endif /* !__GNUC__ */
                     39: #endif /* !__returns_twice */
1.5       pooka      40:
1.16      christos   41: #if !defined(RUMP_REGISTER_T)
1.17    ! christos   42: # define RUMP_REGISTER_T long
        !            43: # if !defined(_KERNEL) && !defined(_KMEMUSER) &&  \
        !            44:     !defined(_KERNTYPES) && !defined(_STANDALONE)
1.15      pooka      45: typedef RUMP_REGISTER_T register_t;
1.17    ! christos   46: # endif
1.15      pooka      47: #endif
                     48:
1.8       pooka      49: struct rumpclient_fork;
                     50:
                     51: #define rumpclient_vfork() rumpclient__dofork(vfork)
                     52:
1.13      pooka      53: #ifdef __BEGIN_DECLS
1.1       pooka      54: __BEGIN_DECLS
1.14      pooka      55: #elif defined(__cplusplus)
1.13      pooka      56: extern "C" {
                     57: #endif
1.1       pooka      58:
                     59: int rumpclient_syscall(int, const void *, size_t, register_t *);
                     60: int rumpclient_init(void);
                     61:
1.2       pooka      62: struct rumpclient_fork *rumpclient_prefork(void);
                     63: int                    rumpclient_fork_init(struct rumpclient_fork *);
1.8       pooka      64: void                   rumpclient_fork_cancel(struct rumpclient_fork *);
                     65: void                   rumpclient_fork_vparent(struct rumpclient_fork *);
1.2       pooka      66:
1.9       pooka      67: pid_t rumpclient_fork(void);
1.7       pooka      68: int rumpclient_exec(const char *, char *const [], char *const[]);
1.8       pooka      69: int rumpclient_daemon(int, int);
1.7       pooka      70:
1.3       pooka      71: #define RUMPCLIENT_RETRYCONN_INFTIME ((time_t)-1)
                     72: #define RUMPCLIENT_RETRYCONN_ONCE ((time_t)-2)
1.4       pooka      73: #define RUMPCLIENT_RETRYCONN_DIE ((time_t)-3)
1.3       pooka      74: void rumpclient_setconnretry(time_t);
                     75:
1.6       pooka      76: enum rumpclient_closevariant {
                     77:        RUMPCLIENT_CLOSE_CLOSE,
                     78:        RUMPCLIENT_CLOSE_DUP2,
                     79:        RUMPCLIENT_CLOSE_FCLOSEM
                     80: };
                     81: int rumpclient__closenotify(int *, enum rumpclient_closevariant);
                     82:
1.12      pooka      83:
1.8       pooka      84: /*
                     85:  * vfork needs to be implemented as an inline to make everything
                     86:  * run in the caller's stackframe.
                     87:  */
1.11      joerg      88: static __attribute__((__always_inline__)) __returns_twice inline pid_t
1.8       pooka      89: rumpclient__dofork(pid_t (*forkfn)(void))
                     90: {
                     91:        struct rumpclient_fork *rf;
                     92:        pid_t pid;
                     93:        int childran = 0;
                     94:
1.12      pooka      95:        if (!(rf = rumpclient_prefork()))
1.8       pooka      96:                return -1;
                     97:
                     98:        switch ((pid = forkfn())) {
                     99:        case -1:
                    100:                rumpclient_fork_cancel(rf);
                    101:                break;
                    102:        case 0:
                    103:                childran = 1;
                    104:                if (rumpclient_fork_init(rf) == -1)
                    105:                        pid = -1;
                    106:                break;
                    107:        default:
                    108:                /* XXX: multithreaded vforker?  do they exist? */
                    109:                if (childran)
                    110:                        rumpclient_fork_vparent(rf);
                    111:                break;
                    112:        }
                    113:
                    114:        return pid;
                    115: }
                    116:
1.13      pooka     117: #ifdef __END_DECLS
1.1       pooka     118: __END_DECLS
1.14      pooka     119: #elif defined(__cplusplus)
1.13      pooka     120: }
                    121: #endif
1.1       pooka     122:
                    123: #endif /* _RUMP_RUMPCLIENT_H_ */

CVSweb <webmaster@jp.NetBSD.org>