Line data    Source code

       1             : #include "fd_netdb.h"
       2             : #include "fd_lookup.h"
       3             : #include <errno.h>
       4             : #include <fcntl.h>
       5             : #include <unistd.h>
       6             : #include "../../util/log/fd_log.h"
       7             : #include "../../util/io/fd_io.h"
       8             : 
       9             : FD_TL int fd_etc_hosts_fd = -1;
      10             : FD_TL int fd_etc_resolv_conf_fd = -1;
      11             : 
      12             : fd_netdb_fds_t *
      13           0 : fd_netdb_open_fds( fd_netdb_fds_t * fds ) {
      14           0 :   if( FD_UNLIKELY( fd_etc_hosts_fd>=0 || fd_etc_resolv_conf_fd>=0 ) ) {
      15           0 :     return NULL;
      16           0 :   }
      17             : 
      18           0 :   int f = open( "/etc/resolv.conf", O_RDONLY );
      19           0 :   if( FD_UNLIKELY( f<0 ) ) {
      20           0 :     FD_LOG_ERR(( "open(/etc/resolv.conf) failed (%i-%s)", errno, fd_io_strerror( errno ) ));
      21           0 :   }
      22           0 :   fd_etc_resolv_conf_fd = f;
      23             : 
      24           0 :   f = open( "/etc/hosts", O_RDONLY );
      25           0 :   if( FD_UNLIKELY( f<0 ) ) {
      26           0 :     FD_LOG_WARNING(( "open(/etc/hosts) failed (%i-%s)", errno, fd_io_strerror( errno ) ));
      27           0 :   } else {
      28           0 :     fd_etc_hosts_fd = f;
      29           0 :   }
      30             : 
      31           0 :   if( fds ) {
      32           0 :     *fds = (fd_netdb_fds_t) {
      33           0 :       .etc_resolv_conf = fd_etc_resolv_conf_fd,
      34           0 :       .etc_hosts       = fd_etc_hosts_fd
      35           0 :     };
      36           0 :   }
      37           0 :   return fds;
      38           0 : }
      39             : 
      40             : void
      41           0 : fd_netdb_close_fds( void ) {
      42           0 :   if( FD_LIKELY( fd_etc_resolv_conf_fd>=0 ) ) {
      43           0 :     if( FD_UNLIKELY( -1==close( fd_etc_resolv_conf_fd ) ) ) FD_LOG_ERR(( "close(/etc/resolv.conf) failed (%i-%s)", errno, fd_io_strerror( errno ) ));
      44           0 :     fd_etc_resolv_conf_fd = -1;
      45           0 :   }
      46           0 :   if( FD_LIKELY( fd_etc_hosts_fd>=0 ) ) {
      47           0 :     if( FD_UNLIKELY( -1==close( fd_etc_hosts_fd ) ) ) FD_LOG_ERR(( "close(/etc/hosts) failed (%i-%s)", errno, fd_io_strerror( errno ) ));
      48           0 :     fd_etc_hosts_fd = -1;
      49           0 :   }
      50           0 : }