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    revision 532 by niro, Sat Sep 1 22:45:15 2007 UTC revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
    # Line 2  Line 2 
    2  /*  /*
    3   * Utility routines.   * Utility routines.
    4   *   *
    5   * create raw socket for icmp protocol test permission   * create raw socket for icmp protocol
    6   * and drop root privileges if running setuid   * and drop root privileges if running setuid
      *  
    7   */   */
    8    
     #include <sys/types.h>  
     #include <netdb.h>  
     #include <sys/socket.h>  
     #include <errno.h>  
     #include <unistd.h>  
    9  #include "libbb.h"  #include "libbb.h"
    10    
    11  int create_icmp_socket(void)  int FAST_FUNC create_icmp_socket(void)
    12  {  {
      struct protoent *proto;  
    13   int sock;   int sock;
    14    #if 0
    15     struct protoent *proto;
    16   proto = getprotobyname("icmp");   proto = getprotobyname("icmp");
    17   /* if getprotobyname failed, just silently force   /* if getprotobyname failed, just silently force
    18   * proto->p_proto to have the correct value for "icmp" */   * proto->p_proto to have the correct value for "icmp" */
    19   if ((sock = socket(AF_INET, SOCK_RAW,   sock = socket(AF_INET, SOCK_RAW,
    20   (proto ? proto->p_proto : 1))) < 0) {        /* 1 == ICMP */   (proto ? proto->p_proto : 1)); /* 1 == ICMP */
    21    #else
    22     sock = socket(AF_INET, SOCK_RAW, 1); /* 1 == ICMP */
    23    #endif
    24     if (sock < 0) {
    25   if (errno == EPERM)   if (errno == EPERM)
    26   bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);   bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
    27   else   bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
      bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);  
    28   }   }
    29    
    30   /* drop root privs if running setuid */   /* drop root privs if running setuid */
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