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| author | K. Y. Srinivasan <kys@microsoft.com> | 2012-09-05 13:50:11 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-10 16:42:32 -0700 |
| commit | c050372591bed4488a32e8bf271ae471af5098eb (patch) | |
| tree | f1f9ec129758fc120e761bae7888042deacb2865 | |
| parent | 2aea3c712826824dbbbaa7b9c0b70936819304b4 (diff) | |
| download | linux-c050372591bed4488a32e8bf271ae471af5098eb.tar.bz2 | |
Tools: hv: Gather DHCP information
Collect information on dhcp setting for the specified interface.
We invoke an external (Distro specific) script to get this information.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | tools/hv/hv_kvp_daemon.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index cfa23a115d18..6fb2c1c6c32e 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -524,6 +524,9 @@ static void kvp_get_ipconfig_info(char *if_name, struct hv_kvp_ipaddr_value *buffer) { char cmd[512]; + char dhcp_info[128]; + char *p; + FILE *file; /* * Get the address of default gateway (ipv4). @@ -572,6 +575,34 @@ static void kvp_get_ipconfig_info(char *if_name, */ kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr, (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0); + + /* + * Gather the DHCP state. + * We will gather this state by invoking an external script. + * The parameter to the script is the interface name. + * Here is the expected output: + * + * Enabled: DHCP enabled. + */ + + sprintf(cmd, "%s %s", "hv_get_dhcp_info", if_name); + + file = popen(cmd, "r"); + if (file == NULL) + return; + + p = fgets(dhcp_info, sizeof(dhcp_info), file); + if (p == NULL) { + pclose(file); + return; + } + + if (!strncmp(p, "Enabled", 7)) + buffer->dhcp_enabled = 1; + else + buffer->dhcp_enabled = 0; + + pclose(file); } |