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4e51bba217
================ Written by Hallvard B. Furuseth and placed into the public domain. This software is not subject to any license of the University of Oslo. ================ A surrogate parent is supposed to keep back-shell children from deadlocking due to resources locked by a threading parent. Implementation note: The surrogate parent closes all unused file descriptors, so it logs errors to stderr instead of via Debug() and uses relloc() instead of ch_realloc(). Also close a file descriptor leak if fork() fails in fork.c. Hallvard B. Furuseth <h.b.furuseth@usit.uio.no>, May 2002.
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/* shell.h - shell backend header file */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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#ifndef SLAPD_SHELL_H
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#define SLAPD_SHELL_H
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#include "external.h"
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LDAP_BEGIN_DECL
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#if defined(HAVE_RECVMSG) && !defined(NO_THREADS)
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# define SHELL_SURROGATE_PARENT
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#endif
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#ifdef SHELL_SURROGATE_PARENT
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extern ldap_pvt_thread_mutex_t shell_surrogate_index_mutex;
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extern ldap_pvt_thread_mutex_t shell_surrogate_fd_mutex[2];
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extern int shell_surrogate_fd[2];
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extern pid_t shell_surrogate_pid;
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typedef struct berval Cmd_info;
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#define MAKE_CMD_INFO(args) make_cmd_info( args )
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#define IS_NULLCMD(cmd) ((cmd).bv_val == NULL)
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extern void make_surrogate_parent LDAP_P(( void ));
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#else /* !SHELL_SURROGATE_PARENT */
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typedef char **Cmd_info;
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#define MAKE_CMD_INFO(args) charray_dup( args )
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#define IS_NULLCMD(cmd) ((cmd) == NULL)
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#endif /* SHELL_SURROGATE_PARENT */
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struct shellinfo {
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Cmd_info si_bind; /* cmd + args to exec for bind */
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Cmd_info si_unbind; /* cmd + args to exec for unbind */
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Cmd_info si_search; /* cmd + args to exec for search */
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Cmd_info si_compare; /* cmd + args to exec for compare */
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Cmd_info si_modify; /* cmd + args to exec for modify */
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Cmd_info si_modrdn; /* cmd + args to exec for modrdn */
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Cmd_info si_add; /* cmd + args to exec for add */
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Cmd_info si_delete; /* cmd + args to exec for delete */
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Cmd_info si_abandon; /* cmd + args to exec for abandon */
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};
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struct slap_backend_db;
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struct slap_conn;
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struct slap_op;
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extern pid_t forkandexec LDAP_P((
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Cmd_info args,
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FILE **rfp,
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FILE **wfp));
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extern void print_suffixes LDAP_P((
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FILE *fp,
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struct slap_backend_db *bd));
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extern int read_and_send_results LDAP_P((
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struct slap_backend_db *bd,
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struct slap_conn *conn,
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struct slap_op *op,
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FILE *fp,
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AttributeName *attrs,
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int attrsonly));
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LDAP_END_DECL
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#endif
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