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Message-ID: <20110322090217.GA1678@aepfle.de>
Date: Tue, 22 Mar 2011 10:02:17 +0100
From: Olaf Hering <olaf@...fle.de>
To: Hank Janssen <hjanssen@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Greg Kroah-Hartman <gregkh@...e.de>, kys@...rosoft.com
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH] hv: update dist release parsing in hv_kvp_daemon
The current code to parse the distribution file handles only files with
at least 3 lines. openSuSE has 2 lines and Redhat only one (according to
google).
Update the parser to handle up to three lines properly. Also make the
buffer allocation dynamic and remove a few casts to avoid compiler
warnings.
Signed-off-by: Olaf Hering <olaf@...fle.de>
---
drivers/staging/hv/tools/hv_kvp_daemon.c | 90 +++++++++++++++++++------------
1 file changed, 57 insertions(+), 33 deletions(-)
Index: linux-2.6/drivers/staging/hv/tools/hv_kvp_daemon.c
===================================================================
--- linux-2.6.orig/drivers/staging/hv/tools/hv_kvp_daemon.c
+++ linux-2.6/drivers/staging/hv/tools/hv_kvp_daemon.c
@@ -102,22 +102,22 @@ static char kvp_send_buffer[4096];
static char kvp_recv_buffer[4096];
static struct sockaddr_nl addr;
-static char os_name[100];
-static char os_major[50];
-static char os_minor[50];
-static char processor_arch[50];
-static char os_build[100];
+static char *os_name = "";
+static char *os_major = "";
+static char *os_minor = "";
+static char *processor_arch;
+static char *os_build;
static char *lic_version;
+static struct utsname uts_buf;
void kvp_get_os_info(void)
{
FILE *file;
- char *eol;
- struct utsname buf;
+ char *p, buf[512];
- uname(&buf);
- strcpy(os_build, buf.release);
- strcpy(processor_arch, buf.machine);
+ uname(&uts_buf);
+ os_build = uts_buf.release;
+ processor_arch= uts_buf.machine;
file = fopen("/etc/SuSE-release", "r");
if (file != NULL)
@@ -132,21 +132,46 @@ void kvp_get_os_info(void)
/*
* We don't have information about the os.
*/
- strcpy(os_name, "Linux");
- strcpy(os_major, "0");
- strcpy(os_minor, "0");
+ os_name = uts_buf.sysname;
return;
kvp_osinfo_found:
- fgets(os_name, 99, file);
- eol = index(os_name, '\n');
- *eol = '\0';
- fgets(os_major, 49, file);
- eol = index(os_major, '\n');
- *eol = '\0';
- fgets(os_minor, 49, file);
- eol = index(os_minor, '\n');
- *eol = '\0';
+ /* up to three lines */
+ p = fgets(buf, sizeof(buf), file);
+ if (p) {
+ p = strchr(buf, '\n');
+ if (p)
+ *p = '\0';
+ p = strdup(buf);
+ if (!p)
+ goto done;
+ os_name = p;
+
+ /* second line */
+ p = fgets(buf, sizeof(buf), file);
+ if (p) {
+ p = strchr(buf, '\n');
+ if (p)
+ *p = '\0';
+ p = strdup(buf);
+ if (!p)
+ goto done;
+ os_major = p;
+
+ /* third line */
+ p = fgets(buf, sizeof(buf), file);
+ if (p) {
+ p = strchr(buf, '\n');
+ if (p)
+ *p = '\0';
+ p = strdup(buf);
+ if (p)
+ os_minor = p;
+ }
+ }
+ }
+
+done:
fclose(file);
return;
}
@@ -293,7 +318,7 @@ netlink_send(int fd, struct cn_msg *msg)
return sendmsg(fd, &message, 0);
}
-main(void)
+int main(void)
{
int fd, len, sock_opt;
int error;
@@ -301,9 +326,10 @@ main(void)
struct pollfd pfd;
struct nlmsghdr *incoming_msg;
struct cn_msg *incoming_cn_msg;
+ struct hv_ku_msg *hv_msg;
+ char *p;
char *key_value;
char *key_name;
- int key_index;
daemon(1, 0);
openlog("KVP", 0, LOG_USER);
@@ -373,9 +399,10 @@ main(void)
* Driver is registering with us; stash away the version
* information.
*/
- lic_version = malloc(strlen(incoming_cn_msg->data) + 1);
+ p = (char *)incoming_cn_msg->data;
+ lic_version = malloc(strlen(p) + 1);
if (lic_version) {
- strcpy(lic_version, incoming_cn_msg->data);
+ strcpy(lic_version, p);
syslog(LOG_INFO, "KVP LIC Version: %s",
lic_version);
} else {
@@ -389,14 +416,11 @@ main(void)
continue;
}
- key_index =
- ((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_index;
- key_name =
- ((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_key;
- key_value =
- ((struct hv_ku_msg *)incoming_cn_msg->data)->kvp_value;
+ hv_msg = (struct hv_ku_msg *)incoming_cn_msg->data;
+ key_name = (char *)hv_msg->kvp_key;
+ key_value = (char *)hv_msg->kvp_value;
- switch (key_index) {
+ switch (hv_msg->kvp_index) {
case FullyQualifiedDomainName:
kvp_get_domain_name(key_value,
HV_KVP_EXCHANGE_MAX_VALUE_SIZE);
--
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