svc_switch_to.c

/*
 * svc_switch_to.c
 *
 * Copyright (c) 2018-2021 Eric Vidal <eric@obarun.org>
 *
 * All rights reserved.
 *
 * This file is part of Obarun. It is subject to the license terms in
 * the LICENSE file found in the top-level directory of this
 * distribution.
 * This file may not be copied, modified, propagated, or distributed
 * except according to the terms contained in the LICENSE file./
 */


#include <oblibs/log.h>

#include <string.h>

#include <skalibs/types.h>

#include <66/backup.h>
#include <66/utils.h>
#include <66/enum.h>
#include <66/ssexec.h>

/** 1-> backup
 * 0-> ori */
int svc_switch_to(ssexec_t *info,unsigned int where)
{
    log_flow() ;

    int r ;

    char type[UINT_FMT] ;
    size_t typelen = uint_fmt(type, TYPE_CLASSIC) ;
    type[typelen] = 0 ;
    size_t cmdlen ;
    char cmd[typelen + 6 + 1] ;
    memcpy(cmd,"-t",2) ;
    memcpy(cmd + 2,type,typelen) ;
    cmdlen = 2 + typelen ;
    memcpy(cmd + cmdlen," -b",3) ;
    cmd[cmdlen + 3] = 0 ;

    r = backup_cmd_switcher(VERBOSITY,cmd,info) ;
    if (r < 0)
        log_warnusys_return(LOG_EXIT_ZERO,"find origin of svc service for: ",info->treename.s) ;

    // point to origin
    if (!r && where)
    {
        log_trace("make a backup of svc service for: ",info->treename.s) ;
        if (!backup_make_new(info,TYPE_CLASSIC))
            log_warnusys_return(LOG_EXIT_ZERO,"make a backup of svc service for: ",info->treename.s) ;

        log_trace("switch svc symlink of tree: ",info->treename.s," to backup") ;
        memcpy(cmd + cmdlen," -s1",4) ;
        cmd[cmdlen + 4] = 0 ;
        r = backup_cmd_switcher(VERBOSITY,cmd,info) ;
        if (r < 0)
        {
            log_warnusys("switch svc symlink of tree: ",info->treename.s," to backup") ;
        }
    }
    else if (r > 0 && !where)
    {
        log_trace("switch svc symlink of tree: ",info->treename.s," to source") ;
        memcpy(cmd + cmdlen," -s0",4) ;
        cmd[cmdlen + 4] = 0 ;
        r = backup_cmd_switcher(VERBOSITY,cmd,info) ;
        if (r < 0)
        {
            log_warnusys("switch svc symlink of tree: ",info->treename.s," to source") ;
        }

        log_trace("make a backup of svc service for: ",info->treename.s) ;
        if (!backup_make_new(info,TYPE_CLASSIC))
            log_warnusys_return(LOG_EXIT_ZERO,"make a backup of svc service for: ",info->treename.s) ;
    }
    return 1 ;
}