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fdhunter

#gcc -o fd fd.c
fd.c: In function `initdevice':
fd.c:72: `SIOCGIFFLAGS' undeclared (first use in this function)
fd.c:72: (Each undeclared identifier is reported only once
fd.c:72: for each function it appears in.)
fd.c:84: `SIOCSIFFLAGS' undeclared (first use in this function)


由于程序太大,只给出相应部分.大家看看程序错在哪里.


71 strcpy(ifr.ifr_name, device); /* interface we're gonna use
*/
72 if( ioctl(if_fd, SIOCGIFFLAGS, &ifr) < 0 ) { /* get flags */
73 close(if_fd);
74 perror("Can't get flags";
75 exit(2);
76 }
77 #if 1
78 if ( pflag )
79 ifr.ifr_flags |= IFF_PROMISC; /* set promiscuous
mode */
80 else
81 ifr.ifr_flags &= ~(IFF_PROMISC);
82 #endif
83
84 if( ioctl(if_fd, SIOCSIFFLAGS, &ifr) < 0 ) { /* set flags */
85 close(if_fd);
86 perror("Can't set flags";
87 exit(2);

wangbin

fd.c:72: `SIOCGIFFLAGS' undeclared (first use in this function)