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linux-sg2042
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tools: hv: Improve error logging in KVP daemon. 

Use errno and strerror() when logging errors to provide
more information.

Signed-off-by: Tomas Hozza <thozza@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Hozza 2013-06-17 10:39:44 +02:00 committed by Greg Kroah-Hartman
parent 0e496b8e84
commit 12e50c3054
1 changed files with 18 additions and 11 deletions
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29
tools/hv/hv_kvp_daemon.c
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@ -127,7 +127,8 @@ static void kvp_acquire_lock(int pool)
fl.l_pid = getpid();
if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) {
syslog(LOG_ERR, "Failed to acquire the lock pool: %d", pool);
syslog(LOG_ERR, "Failed to acquire the lock pool: %d; error: %d %s", pool,
errno, strerror(errno));
exit(EXIT_FAILURE);
}
}
@ -138,8 +139,8 @@ static void kvp_release_lock(int pool)
fl.l_pid = getpid();
if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) {
perror("fcntl");
syslog(LOG_ERR, "Failed to release the lock pool: %d", pool);
syslog(LOG_ERR, "Failed to release the lock pool: %d; error: %d %s", pool,
errno, strerror(errno));
exit(EXIT_FAILURE);
}
}
@ -157,8 +158,9 @@ static void kvp_update_file(int pool)
filep = fopen(kvp_file_info[pool].fname, "we");
if (!filep) {
syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool,
errno, strerror(errno));
kvp_release_lock(pool);
syslog(LOG_ERR, "Failed to open file, pool: %d", pool);
exit(EXIT_FAILURE);
}
@ -188,8 +190,9 @@ static void kvp_update_mem_state(int pool)
filep = fopen(kvp_file_info[pool].fname, "re");
if (!filep) {
syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool,
errno, strerror(errno));
kvp_release_lock(pool);
syslog(LOG_ERR, "Failed to open file, pool: %d", pool);
exit(EXIT_FAILURE);
}
for (;;) {
@ -240,7 +243,8 @@ static int kvp_file_init(void)
if (access(KVP_CONFIG_LOC, F_OK)) {
if (mkdir(KVP_CONFIG_LOC, 0755 /* rwxr-xr-x */)) {
syslog(LOG_ERR, " Failed to create %s", KVP_CONFIG_LOC);
syslog(LOG_ERR, "Failed to create '%s'; error: %d %s", KVP_CONFIG_LOC,
errno, strerror(errno));
exit(EXIT_FAILURE);
}
}
@ -1280,7 +1284,8 @@ static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val)
file = fopen(if_file, "w");
if (file == NULL) {
syslog(LOG_ERR, "Failed to open config file");
syslog(LOG_ERR, "Failed to open config file; error: %d %s",
errno, strerror(errno));
return HV_E_FAIL;
}
@ -1447,7 +1452,8 @@ int main(void)
fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
if (fd < 0) {
syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd);
syslog(LOG_ERR, "netlink socket creation failed; error: %d %s", errno,
strerror(errno));
exit(EXIT_FAILURE);
}
addr.nl_family = AF_NETLINK;
@ -1458,7 +1464,7 @@ int main(void)
error = bind(fd, (struct sockaddr *)&addr, sizeof(addr));
if (error < 0) {
syslog(LOG_ERR, "bind failed; error:%d", error);
syslog(LOG_ERR, "bind failed; error: %d %s", errno, strerror(errno));
close(fd);
exit(EXIT_FAILURE);
}
@ -1484,7 +1490,7 @@ int main(void)
len = netlink_send(fd, message);
if (len < 0) {
syslog(LOG_ERR, "netlink_send failed; error:%d", len);
syslog(LOG_ERR, "netlink_send failed; error: %d %s", errno, strerror(errno));
close(fd);
exit(EXIT_FAILURE);
}
@ -1716,7 +1722,8 @@ kvp_done:
len = netlink_send(fd, incoming_cn_msg);
if (len < 0) {
syslog(LOG_ERR, "net_link send failed; error:%d", len);
syslog(LOG_ERR, "net_link send failed; error: %d %s", errno,
strerror(errno));
exit(EXIT_FAILURE);
}
}