diff options
| author | Daniel Borca <dborca@yahoo.com> | 2013-11-28 15:50:25 +0400 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2013-11-28 15:50:25 +0400 |
| commit | 72745632a13ccd12232127b31e1656f2f7ebcaff (patch) | |
| tree | 2548a6297208698dbab4c4a3db3e16961c2cf800 | |
| parent | df0d2cd837e564e2653ce9a8b92a32d4eaf6e9c3 (diff) | |
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>
| -rw-r--r-- | networking/ping.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/networking/ping.c b/networking/ping.c index 5e4771f5a..5d71fe8cc 100644 --- a/networking/ping.c +++ b/networking/ping.c @@ -168,9 +168,22 @@ create_icmp_socket(void) #endif sock = socket(AF_INET, SOCK_RAW, 1); /* 1 == ICMP */ if (sock < 0) { - if (errno == EPERM) - bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); - bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket); + if (errno != EPERM) + bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket); +#if defined(__linux__) || defined(__APPLE__) + /* We don't have root privileges. Try SOCK_DGRAM instead. + * Linux needs net.ipv4.ping_group_range for this to work. + * MacOSX allows ICMP_ECHO, ICMP_TSTAMP or ICMP_MASKREQ + */ +#if ENABLE_PING6 + if (lsa->u.sa.sa_family == AF_INET6) + sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6); + else +#endif + sock = socket(AF_INET, SOCK_DGRAM, 1); /* 1 == ICMP */ + if (sock < 0) +#endif + bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); } xmove_fd(sock, pingsock); |