ping: try SOCK_DGRAM if no root privileges
Signed-off-by: Daniel Borca <dborca@yahoo.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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df0d2cd837
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72745632a1
@ -168,9 +168,22 @@ create_icmp_socket(void)
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#endif
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sock = socket(AF_INET, SOCK_RAW, 1); /* 1 == ICMP */
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if (sock < 0) {
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if (errno == EPERM)
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bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
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bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
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if (errno != EPERM)
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bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket);
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#if defined(__linux__) || defined(__APPLE__)
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/* We don't have root privileges. Try SOCK_DGRAM instead.
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* Linux needs net.ipv4.ping_group_range for this to work.
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* MacOSX allows ICMP_ECHO, ICMP_TSTAMP or ICMP_MASKREQ
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*/
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#if ENABLE_PING6
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if (lsa->u.sa.sa_family == AF_INET6)
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sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6);
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else
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#endif
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sock = socket(AF_INET, SOCK_DGRAM, 1); /* 1 == ICMP */
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if (sock < 0)
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#endif
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bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
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}
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xmove_fd(sock, pingsock);
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