516  

 .   ,    -
      " "   -
,  ,  ""    .   -
         .

   

   posix_spawn()  posix_spawnp ()  -
        . 
IEEE Std 1003.1-2001    ,  
 ,       ,
    ,   ,  -
 ,   wait ()  waitpid ().

 stat_val  ,    ,  
    API-,     ,
   .  ,   -
       127    ,
        
posix_spawn ()  posix_spawnp ().

     stak_val  -
   . , WIFSPAWNFAIL,  
 ,       
 ,      posix_spawn ()
 posix_spawnp(),         -
;  , WSPAWNERRNO,    ,  
WIFSPAWNFAIL  .  ,     -
   ,      -
  posix_spawn ()  posix_spawnp ()    
 waitpid(),      
stat_val      .

     ,    -
     IEEE Std 1003.1-2001, -
      , 
    . ,    s?:afc_ya2
       ,    -
       . 
   127      
     system ()  ()  
   ,     ,  
,      .   127 
          -
    .    ,   ( 
) ""   posix_spawn()  posix_spawnp ()
        , 
 ,        -
    .

 ,       
posix_spawn()  posix_spawnp ()     .
  ,       , 
   ,     