18 lines
482 B
C
18 lines
482 B
C
--- send_packet_bsd.c.orig 2022-05-11 08:27:25 UTC
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+++ send_packet_bsd.c
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@@ -60,7 +60,13 @@ int send_packet_bsd(const char *dev, u_char *packet, u
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flock(bpffd, LOCK_EX);
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// Bind it to a device
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- ioctl(bpffd, BIOCSETIF, dev);
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+ if (ioctl(bpffd, BIOCSETIF, dev) == -1)
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+ {
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+ flock(bpffd, LOCK_UN);
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+ close(bpffd);
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+ perror("open bpf");
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+ return 0;
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+ }
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// Send the packet and unlock
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write(bpffd, packet, packetsize);
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