Contents of /trunk/mkinitrd-magellan/busybox/libbb/create_icmp_socket.c
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Sun May 30 11:32:42 2010 UTC (14 years, 3 months ago) by niro
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Sun May 30 11:32:42 2010 UTC (14 years, 3 months ago) by niro
File MIME type: text/plain
File size: 850 byte(s)
-updated to busybox-1.16.1 and enabled blkid/uuid support in default config
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Utility routines. |
4 | * |
5 | * create raw socket for icmp protocol |
6 | * and drop root privileges if running setuid |
7 | * |
8 | * Licensed under GPLv2, see file LICENSE in this tarball for details. |
9 | */ |
10 | |
11 | #include "libbb.h" |
12 | |
13 | int FAST_FUNC create_icmp_socket(void) |
14 | { |
15 | int sock; |
16 | #if 0 |
17 | struct protoent *proto; |
18 | proto = getprotobyname("icmp"); |
19 | /* if getprotobyname failed, just silently force |
20 | * proto->p_proto to have the correct value for "icmp" */ |
21 | sock = socket(AF_INET, SOCK_RAW, |
22 | (proto ? proto->p_proto : 1)); /* 1 == ICMP */ |
23 | #else |
24 | sock = socket(AF_INET, SOCK_RAW, 1); /* 1 == ICMP */ |
25 | #endif |
26 | if (sock < 0) { |
27 | if (errno == EPERM) |
28 | bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); |
29 | bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket); |
30 | } |
31 | |
32 | /* drop root privs if running setuid */ |
33 | xsetuid(getuid()); |
34 | |
35 | return sock; |
36 | } |