Annotated edit history of
SIOCSIFHWADDR version 2, including all changes.
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| 1 |
PerryLorier |
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!!!__S__et __I__/__O__ __C__ontrol: __S__ocket __I__nter__f__ace __H__ard__w__are __Addr__ess |
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Sets the interface hardware address. |
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!!EXAMPLE |
| 2 |
AlexGordeev |
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<verbatim> |
| 1 |
PerryLorier |
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#include <sys/types.h> /* for socket(2) and related bits and pieces */ |
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#include <sys/socket.h> /* for socket(2) */ |
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#include <net/if.h> /* for struct ifreq */ |
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#include <net/if_arp.h> /* for ARPHRD_ETHER */ |
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#include <sys/ioctl.h> /* for IOCTL's */ |
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#include <stdio.h> /* for fprintf etc */ |
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#include <unistd.h> /* for close */ |
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int main(int argc,char **argv) |
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{ |
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struct ifreq ifr; |
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int skfd; |
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if (argc<3) { |
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fprintf(stderr,"usage:\n%s interface hwaddr\n",argv[1]); |
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return 1; |
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} |
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/* Fill in the structure */ |
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snprintf(ifr.ifr_name, IFNAMSIZ, "%s", argv[1]); |
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ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER; |
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/* TODO: write some code to parse argv[2] into ifr.ifr_hwaddr.sa_data */ |
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/* memcpy(&ifr.ifr_hwaddr.sa_data, argv[2], sizeof(ether.address)); */ |
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/* Create a socket fd */ |
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skfd = socket(PF_INET,SOCK_STREAM,0); |
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/* call the IOCTL */ |
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if (ioctl(skfd, SIOCSIFHWADDR, &ifr) < 0) { |
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perror("ioctl(SIOCSIFHWADDR)"); |
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return 1; |
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} |
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/* cleanup */ |
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close(skfd); |
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/* we're out of here! */ |
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return 0; |
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} |
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AlexGordeev |
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</verbatim> |
