[Libvir] [PATCH] Detect heap allocation failure; factor out some duplication.
Jim Meyering
jim at meyering.net
Thu Nov 29 18:35:47 UTC 2007
"Daniel P. Berrange" <berrange at redhat.com> wrote:
> On Wed, Nov 28, 2007 at 02:18:22PM +0100, Jim Meyering wrote:
>> I spotted a few unchecked heap allocations (strdup, malloc, calloc)
>> in qemud.c and have fixed it so such failure evokes a proper diagnostic
>> rather than e.g., a segfault.
>
> Yep, good stuff.
>
>> I've also arranged to free some of the memory upon failure,
>> but not all (see comments for why).
>>
>> In spite of those additions, this patch factors out enough
>> duplication that the net change is to remove a few lines from the
>> file. Although in general I prefer to factor things out into
>> separate functions, in this case, it seemed better to use macros.
>
> I really don't like the macros, particularly when the macro definitions
> are inline to the function. I'd prefer to see these helpers as separate
> functions. The compiler is perfectly able to decide whether to inline
> the code or not & it makes it more friendly to edit & read when it is
> using separate functions.
I've rewritten to use fewer macros.
In the process, I did a little testing, and will
add an automated test to give this code some coverage
in a separate patch.
Detect heap allocation failure; factor out some duplication.
* qemud/qemud.c (tls_port, tcp_port, mdns_name, tls_allowed_ip_list):
(tls_allowed_dn_list): Remove "const", now that we free these.
(unix_sock_rw_mask): Rename from unix_sock_rw_perms, so that
the latter name can be used as a local string variable, so that the
variable name matches the config attribute name.
(unix_sock_ro_mask): Rename from unix_sock_ro_perms, likewise.
(remoteCheckDN, remoteCheckAccess): Adapt to const removal.
(qemudDispatchServer): Check for heap allocation failure.
(remoteConfigGetStringList): New function, based on code from Dan Berrangé.
(CHECK_TYPE): Remove macro.
(checkType): New function.
(GET_CONF_INT, GET_CONF_STR): New macros.
(remoteReadConfigFile): Use new macros to avoid duplication and to
check for allocation failure.
* src/conf.h (virConfTypeName): New static inline function.
* qemud/libvirtd.conf: Add '=' signs to correct invalid syntax
in commented out config lines. Distinguish those lines by
having no space between '#' and the following character.
---
qemud/libvirtd.conf | 50 ++++----
qemud/qemud.c | 378 ++++++++++++++++++++++++++++++---------------------
src/conf.h | 26 ++++-
3 files changed, 273 insertions(+), 181 deletions(-)
diff --git a/qemud/libvirtd.conf b/qemud/libvirtd.conf
index 51168b8..b427e14 100644
--- a/qemud/libvirtd.conf
+++ b/qemud/libvirtd.conf
@@ -11,7 +11,7 @@
# using this capability.
#
# This is enabled by default, uncomment this to disable it
-# listen_tls = 0
+#listen_tls = 0
# Listen for unencrypted TCP connections on the public TCP/IP port.
# NB, must pass the --listen flag to the libvirtd process for this to
@@ -20,19 +20,19 @@
# NB, this is insecure. Do not use except for development.
#
# This is disabled by default, uncomment this to enable it.
-# listen_tcp = 1
+#listen_tcp = 1
# Override the port for accepting secure TLS connections
# This can be a port number, or service name
#
-# tls_port = "16514"
+#tls_port = "16514"
# Override the port for accepting insecure TCP connections
# This can be a port number, or service name
-#
-# tcp_port = "16509"
+#
+#tcp_port = "16509"
@@ -42,38 +42,38 @@
# stopping the Avahi daemon
#
# This is enabled by default, uncomment this to disable it
-# mdns_adv = 0
+#mdns_adv = 0
# Override the default mDNS advertizement name. This must be
# unique on the immediate broadcast network.
-#
+#
# The default is "Virtualization Host HOSTNAME", where HOSTNAME
# is subsituted for the short hostname of the machine (without domain)
#
-# mdns_name "Virtualization Host Joe Demo"
+#mdns_name = "Virtualization Host Joe Demo"
# Set the UNIX domain socket group ownership. This can be used to
# allow a 'trusted' set of users access to management capabilities
# without becoming root.
-#
-# This is restricted to 'root' by default.
-# unix_sock_group "libvirt"
+#
+# This is restricted to 'root' by default.
+#unix_sock_group = "libvirt"
# Set the UNIX socket permissions for the R/O socket. This is used
# for monitoring VM status only
#
# Default allows any user. If setting group ownership may want to
# restrict this to:
-# unix_sock_ro_perms "0777"
+#unix_sock_ro_perms = "0777"
# Set the UNIX socket permissions for the R/W socket. This is used
# for full management of VMs
#
# Default allows only root. If setting group ownership may want to
# relax this to:
-# unix_sock_rw_perms "octal-perms" "0770"
+#unix_sock_rw_perms = "0770"
@@ -85,7 +85,7 @@
#
# Default is to always verify. Uncommenting this will disable
# verification - make sure an IP whitelist is set
-# tls_no_verify_certificate 1
+#tls_no_verify_certificate = 1
# Flag to disable verification of client IP address
#
@@ -94,27 +94,27 @@
# it is easy to spoof source IP.
#
# Uncommenting this will disable verification
-# tls_no_verify_address 1
+#tls_no_verify_address = 1
# Override the default server key file path
#
-# key_file "/etc/pki/libvirt/private/serverkey.pem"
+#key_file = "/etc/pki/libvirt/private/serverkey.pem"
# Override the default server certificate file path
#
-# cert_file "/etc/pki/libvirt/servercert.pem"
+#cert_file = "/etc/pki/libvirt/servercert.pem"
# Override the default CA certificate path
#
-# ca_file "/etc/pki/CA/cacert.pem"
+#ca_file = "/etc/pki/CA/cacert.pem"
# Specify a certificate revocation list.
-#
+#
# Defaults to not using a CRL, uncomment to enable it
-# crl_file "/etc/pki/CA/crl.pem"
+#crl_file = "/etc/pki/CA/crl.pem"
# A whitelist of allowed x509 Distinguished Names
-# This list may contain wildcards such as
+# This list may contain wildcards such as
#
# "C=GB,ST=London,L=London,O=Red Hat,CN=*"
#
@@ -124,18 +124,16 @@
# entirely rather than using empty list to disable these checks
#
# By default, no DN's are checked
-# tls_allowed_dn_list ["DN1", "DN2"]
+#tls_allowed_dn_list = ["DN1", "DN2"]
# A whitelist of allowed client IP addresses
#
-# This list may contain wildcards such as 192.168.* See the POSIX fnmatch
+# This list may contain wildcards such as 192.168.* See the POSIX fnmatch
# function for the format of the wildcards.
#
# NB If this is an empty list, no client can connect, so comment out
# entirely rather than using empty list to disable these checks
#
# By default, no IP's are checked. This can be IPv4 or IPv6 addresses
-# tls_allowed_ip_list ["ip1", "ip2", "ip3"]
-
-
+#tls_allowed_ip_list = ["ip1", "ip2", "ip3"]
diff --git a/qemud/qemud.c b/qemud/qemud.c
index 5f76a26..9904e4a 100644
--- a/qemud/qemud.c
+++ b/qemud/qemud.c
@@ -70,27 +70,27 @@ static int ipsock = 0; /* -l Listen for TCP/IP */
/* Defaults for configuration file elements */
static int listen_tls = 1;
static int listen_tcp = 0;
-static const char *tls_port = LIBVIRTD_TLS_PORT;
-static const char *tcp_port = LIBVIRTD_TCP_PORT;
+static char *tls_port = (char *) LIBVIRTD_TLS_PORT;
+static char *tcp_port = (char *) LIBVIRTD_TCP_PORT;
static gid_t unix_sock_gid = 0; /* Only root by default */
-static int unix_sock_rw_perms = 0700; /* Allow user only */
-static int unix_sock_ro_perms = 0777; /* Allow world */
+static int unix_sock_rw_mask = 0700; /* Allow user only */
+static int unix_sock_ro_mask = 0777; /* Allow world */
#ifdef HAVE_AVAHI
static int mdns_adv = 1;
-static const char *mdns_name = NULL;
+static char *mdns_name = NULL;
#endif
static int tls_no_verify_certificate = 0;
static int tls_no_verify_address = 0;
-static const char **tls_allowed_ip_list = 0;
-static const char **tls_allowed_dn_list = 0;
+static char **tls_allowed_ip_list = NULL;
+static char **tls_allowed_dn_list = NULL;
-static const char *key_file = LIBVIRT_SERVERKEY;
-static const char *cert_file = LIBVIRT_SERVERCERT;
-static const char *ca_file = LIBVIRT_CACERT;
-static const char *crl_file = "";
+static char *key_file = (char *) LIBVIRT_SERVERKEY;
+static char *cert_file = (char *) LIBVIRT_SERVERCERT;
+static char *ca_file = (char *) LIBVIRT_CACERT;
+static char *crl_file = (char *) "";
static gnutls_certificate_credentials_t x509_cred;
static gnutls_dh_params_t dh_params;
@@ -407,7 +407,7 @@ static int qemudGoDaemon(void) {
status != 0) {
return -1;
}
-
+
return pid;
}
}
@@ -482,7 +482,7 @@ static int qemudListenUnix(struct qemud_server *server,
oldgrp = getgid();
- oldmask = umask(readonly ? ~unix_sock_ro_perms : ~unix_sock_rw_perms);
+ oldmask = umask(readonly ? ~unix_sock_ro_mask : ~unix_sock_rw_mask);
if (getuid() == 0)
setgid(unix_sock_gid);
@@ -649,7 +649,7 @@ static int qemudInitPaths(struct qemud_server *server,
char *base = 0;
uid_t uid = geteuid();
-
+
if (!uid) {
if (snprintf (sockname, maxlen, "%s/run/libvirt/libvirt-sock",
LOCAL_STATE_DIR) >= maxlen)
@@ -764,7 +764,7 @@ static struct qemud_server *qemudInitialize(int sigread) {
group = libvirtd_mdns_add_group(server->mdns, mdns_name);
}
- /*
+ /*
* See if there's a TLS enabled port we can advertise. Cowardly
* don't bother to advertise TCP since we don't want people using
* them for real world apps
@@ -777,7 +777,7 @@ static struct qemud_server *qemudInitialize(int sigread) {
}
sock = sock->next;
}
-
+
/*
* Add the primary entry - we choose SSH because its most likely to always
* be available
@@ -840,7 +840,7 @@ remoteCheckDN (gnutls_x509_crt_t cert)
{
char name[256];
size_t namesize = sizeof name;
- const char **wildcards;
+ char **wildcards;
int err;
err = gnutls_x509_crt_get_dn (cert, name, &namesize);
@@ -928,13 +928,13 @@ remoteCheckCertificate (gnutls_session_t session)
gnutls_x509_crt_deinit (cert);
return -1;
}
-
+
if (gnutls_x509_crt_get_expiration_time (cert) < now) {
qemudLog (QEMUD_ERR, "remoteCheckCertificate: the client certificate has expired");
gnutls_x509_crt_deinit (cert);
return -1;
}
-
+
if (gnutls_x509_crt_get_activation_time (cert) > now) {
qemudLog (QEMUD_ERR, "remoteCheckCertificate: the client certificate is not yet activated");
gnutls_x509_crt_deinit (cert);
@@ -959,7 +959,7 @@ static int
remoteCheckAccess (struct qemud_client *client)
{
char addr[NI_MAXHOST];
- const char **wildcards;
+ char **wildcards;
int found, err;
/* Verify client certificate. */
@@ -1044,6 +1044,8 @@ static int qemudDispatchServer(struct qemud_server *server, struct qemud_socket
}
client = calloc(1, sizeof(struct qemud_client));
+ if (client == NULL)
+ goto cleanup;
client->magic = QEMUD_CLIENT_MAGIC;
client->fd = fd;
client->readonly = sock->readonly;
@@ -1505,6 +1507,131 @@ static void qemudCleanup(struct qemud_server *server) {
free(server);
}
+/* Allocate an array of malloc'd strings from the config file, filename
+ * (used only in diagnostics), using handle "conf". Upon error, return -1
+ * and free any allocated memory. Otherwise, save the array in *list_arg
+ * and return 0.
+ */
+static int
+remoteConfigGetStringList(virConfPtr conf, const char *key, char ***list_arg,
+ const char *filename)
+{
+ char **list;
+ virConfValuePtr p = virConfGetValue (conf, key);
+ if (!p)
+ return 0;
+
+ switch (p->type) {
+ case VIR_CONF_STRING:
+ list = malloc (2 * sizeof (*list));
+ if (list == NULL) {
+ qemudLog (QEMUD_ERR,
+ "failed to allocate memory for %s config list", key);
+ return -1;
+ }
+ list[0] = strdup (p->str);
+ list[1] = NULL;
+ if (list[0] == NULL) {
+ qemudLog (QEMUD_ERR,
+ "failed to allocate memory for %s config list value",
+ key);
+ free (list);
+ return -1;
+ }
+ break;
+
+ case VIR_CONF_LIST: {
+ int i, len = 0;
+ virConfValuePtr pp;
+ for (pp = p->list; pp; pp = pp->next)
+ len++;
+ list = calloc (1+len, sizeof (*list));
+ if (list == NULL) {
+ qemudLog (QEMUD_ERR,
+ "failed to allocate memory for %s config list", key);
+ return -1;
+ }
+ for (i = 0, pp = p->list; pp; ++i, pp = pp->next) {
+ if (pp->type != VIR_CONF_STRING) {
+ qemudLog (QEMUD_ERR, "remoteReadConfigFile: %s: %s:"
+ " must be a string or list of strings\n",
+ filename, key);
+ free (list);
+ return -1;
+ }
+ list[i] = strdup (pp->str);
+ if (list[i] == NULL) {
+ int j;
+ for (j = 0 ; j < i ; j++)
+ free (list[j]);
+ free (list);
+ qemudLog (QEMUD_ERR, "failed to allocate memory"
+ " for %s config list value", key);
+ return -1;
+ }
+
+ }
+ list[i] = NULL;
+ break;
+ }
+
+ default:
+ qemudLog (QEMUD_ERR, "remoteReadConfigFile: %s: %s:"
+ " must be a string or list of strings\n",
+ filename, key);
+ return -1;
+ }
+
+ *list_arg = list;
+ return 0;
+}
+
+/* A helper function used by each of the following macros. */
+static int
+checkType (virConfValuePtr p, const char *filename,
+ const char *key, virConfType required_type)
+{
+ if (p->type != required_type) {
+ qemudLog (QEMUD_ERR,
+ "remoteReadConfigFile: %s: %s: invalid type:"
+ " got %s; expected %s\n", filename, key,
+ virConfTypeName (p->type),
+ virConfTypeName (required_type));
+ return -1;
+ }
+ return 0;
+}
+
+/* If there is no config data for the key, #var_name, then do nothing.
+ If there is valid data of type VIR_CONF_STRING, and strdup succeeds,
+ store the result in var_name. Otherwise, (i.e. invalid type, or strdup
+ failure), give a diagnostic and "goto" the cleanup-and-fail label. */
+#define GET_CONF_STR(conf, filename, var_name) \
+ do { \
+ virConfValuePtr p = virConfGetValue (conf, #var_name); \
+ if (p) { \
+ if (checkType (p, filename, #var_name, VIR_CONF_STRING) < 0) \
+ goto free_and_fail; \
+ (var_name) = strdup (p->str); \
+ if ((var_name) == NULL) { \
+ qemudLog (QEMUD_ERR, "remoteReadConfigFile: %s\n", \
+ strerror (errno)); \
+ goto free_and_fail; \
+ } \
+ } \
+ } while (0)
+
+/* Like GET_CONF_STR, but for integral values. */
+#define GET_CONF_INT(conf, filename, var_name) \
+ do { \
+ virConfValuePtr p = virConfGetValue (conf, #var_name); \
+ if (p) { \
+ if (checkType (p, filename, #var_name, VIR_CONF_LONG) < 0) \
+ goto free_and_fail; \
+ (var_name) = p->l; \
+ } \
+ } while (0)
+
/* Read the config file if it exists.
* Only used in the remote case, hence the name.
*/
@@ -1513,6 +1640,12 @@ remoteReadConfigFile (const char *filename)
{
virConfPtr conf;
+ /* The following variable names must match the corresponding
+ configuration strings. */
+ char *unix_sock_ro_perms = NULL;
+ char *unix_sock_rw_perms = NULL;
+ char *unix_sock_group = NULL;
+
/* Just check the file is readable before opening it, otherwise
* libvirt emits an error.
*/
@@ -1521,166 +1654,103 @@ remoteReadConfigFile (const char *filename)
conf = virConfReadFile (filename);
if (!conf) return 0;
- virConfValuePtr p;
-
-#define CHECK_TYPE(name,typ) if (p && p->type != (typ)) { \
- qemudLog (QEMUD_ERR, \
- "remoteReadConfigFile: %s: %s: expected type " #typ "\n", \
- filename, (name)); \
- return -1; \
- }
-
- p = virConfGetValue (conf, "listen_tls");
- CHECK_TYPE ("listen_tls", VIR_CONF_LONG);
- listen_tls = p ? p->l : listen_tls;
-
- p = virConfGetValue (conf, "listen_tcp");
- CHECK_TYPE ("listen_tcp", VIR_CONF_LONG);
- listen_tcp = p ? p->l : listen_tcp;
-
- p = virConfGetValue (conf, "tls_port");
- CHECK_TYPE ("tls_port", VIR_CONF_STRING);
- tls_port = p ? strdup (p->str) : tls_port;
-
- p = virConfGetValue (conf, "tcp_port");
- CHECK_TYPE ("tcp_port", VIR_CONF_STRING);
- tcp_port = p ? strdup (p->str) : tcp_port;
+ GET_CONF_STR (conf, filename, tls_port);
+ GET_CONF_STR (conf, filename, tcp_port);
- p = virConfGetValue (conf, "unix_sock_group");
- CHECK_TYPE ("unix_sock_group", VIR_CONF_STRING);
- if (p && p->str) {
+ GET_CONF_STR (conf, filename, unix_sock_group);
+ if (unix_sock_group) {
if (getuid() != 0) {
qemudLog (QEMUD_WARN, "Cannot set group when not running as root");
} else {
- struct group *grp = getgrnam(p->str);
+ struct group *grp = getgrnam(unix_sock_group);
if (!grp) {
- qemudLog (QEMUD_ERR, "Failed to lookup group '%s'", p->str);
- return -1;
+ qemudLog (QEMUD_ERR, "Failed to lookup group '%s'",
+ unix_sock_group);
+ goto free_and_fail;
}
unix_sock_gid = grp->gr_gid;
}
+ free (unix_sock_group);
+ unix_sock_group = NULL;
}
- p = virConfGetValue (conf, "unix_sock_ro_perms");
- CHECK_TYPE ("unix_sock_ro_perms", VIR_CONF_STRING);
- if (p && p->str) {
- if (xstrtol_i(p->str, NULL, 8, &unix_sock_ro_perms) != 0) {
- qemudLog (QEMUD_ERR, "Failed to parse mode '%s'", p->str);
- return -1;
+ GET_CONF_STR (conf, filename, unix_sock_ro_perms);
+ if (unix_sock_ro_perms) {
+ if (xstrtol_i (unix_sock_ro_perms, NULL, 8, &unix_sock_ro_mask) != 0) {
+ qemudLog (QEMUD_ERR, "Failed to parse mode '%s'",
+ unix_sock_ro_perms);
+ goto free_and_fail;
}
+ free (unix_sock_ro_perms);
+ unix_sock_ro_perms = NULL;
}
- p = virConfGetValue (conf, "unix_sock_rw_perms");
- CHECK_TYPE ("unix_sock_rw_perms", VIR_CONF_STRING);
- if (p && p->str) {
- if (xstrtol_i(p->str, NULL, 8, &unix_sock_rw_perms) != 0) {
- qemudLog (QEMUD_ERR, "Failed to parse mode '%s'", p->str);
- return -1;
+ GET_CONF_STR (conf, filename, unix_sock_rw_perms);
+ if (unix_sock_rw_perms) {
+ if (xstrtol_i (unix_sock_rw_perms, NULL, 8, &unix_sock_rw_mask) != 0) {
+ qemudLog (QEMUD_ERR, "Failed to parse mode '%s'",
+ unix_sock_rw_perms);
+ goto free_and_fail;
}
+ free (unix_sock_rw_perms);
+ unix_sock_rw_perms = NULL;
}
#ifdef HAVE_AVAHI
- p = virConfGetValue (conf, "mdns_adv");
- CHECK_TYPE ("mdns_adv", VIR_CONF_LONG);
- mdns_adv = p ? p->l : mdns_adv;
-
- p = virConfGetValue (conf, "mdns_name");
- CHECK_TYPE ("mdns_name", VIR_CONF_STRING);
- mdns_name = p ? strdup (p->str) : NULL;
+ GET_CONF_INT (conf, filename, mdns_adv);
+ GET_CONF_STR (conf, filename, mdns_name);
#endif
- p = virConfGetValue (conf, "tls_no_verify_certificate");
- CHECK_TYPE ("tls_no_verify_certificate", VIR_CONF_LONG);
- tls_no_verify_certificate = p ? p->l : tls_no_verify_certificate;
-
- p = virConfGetValue (conf, "tls_no_verify_address");
- CHECK_TYPE ("tls_no_verify_address", VIR_CONF_LONG);
- tls_no_verify_address = p ? p->l : tls_no_verify_address;
-
- p = virConfGetValue (conf, "key_file");
- CHECK_TYPE ("key_file", VIR_CONF_STRING);
- key_file = p ? strdup (p->str) : key_file;
-
- p = virConfGetValue (conf, "cert_file");
- CHECK_TYPE ("cert_file", VIR_CONF_STRING);
- cert_file = p ? strdup (p->str) : cert_file;
-
- p = virConfGetValue (conf, "ca_file");
- CHECK_TYPE ("ca_file", VIR_CONF_STRING);
- ca_file = p ? strdup (p->str) : ca_file;
-
- p = virConfGetValue (conf, "crl_file");
- CHECK_TYPE ("crl_file", VIR_CONF_STRING);
- crl_file = p ? strdup (p->str) : crl_file;
-
- p = virConfGetValue (conf, "tls_allowed_dn_list");
- if (p) {
- switch (p->type) {
- case VIR_CONF_STRING:
- tls_allowed_dn_list = malloc (2 * sizeof (char *));
- tls_allowed_dn_list[0] = strdup (p->str);
- tls_allowed_dn_list[1] = 0;
- break;
+ GET_CONF_INT (conf, filename, tls_no_verify_certificate);
+ GET_CONF_INT (conf, filename, tls_no_verify_address);
- case VIR_CONF_LIST: {
- int i, len = 0;
- virConfValuePtr pp;
- for (pp = p->list; pp; pp = p->next)
- len++;
- tls_allowed_dn_list =
- malloc ((1+len) * sizeof (char *));
- for (i = 0, pp = p->list; pp; ++i, pp = p->next) {
- if (pp->type != VIR_CONF_STRING) {
- qemudLog (QEMUD_ERR, "remoteReadConfigFile: %s: tls_allowed_dn_list: should be a string or list of strings\n", filename);
- return -1;
- }
- tls_allowed_dn_list[i] = strdup (pp->str);
- }
- tls_allowed_dn_list[i] = 0;
- break;
- }
+ GET_CONF_STR (conf, filename, key_file);
+ GET_CONF_STR (conf, filename, cert_file);
+ GET_CONF_STR (conf, filename, ca_file);
+ GET_CONF_STR (conf, filename, crl_file);
- default:
- qemudLog (QEMUD_ERR, "remoteReadConfigFile: %s: tls_allowed_dn_list: should be a string or list of strings\n", filename);
- return -1;
- }
- }
+ if (remoteConfigGetStringList (conf, "tls_allowed_dn_list",
+ &tls_allowed_dn_list, filename) < 0)
+ goto free_and_fail;
- p = virConfGetValue (conf, "tls_allowed_ip_list");
- if (p) {
- switch (p->type) {
- case VIR_CONF_STRING:
- tls_allowed_ip_list = malloc (2 * sizeof (char *));
- tls_allowed_ip_list[0] = strdup (p->str);
- tls_allowed_ip_list[1] = 0;
- break;
+ if (remoteConfigGetStringList (conf, "tls_allowed_ip_list",
+ &tls_allowed_ip_list, filename) < 0)
+ goto free_and_fail;
- case VIR_CONF_LIST: {
- int i, len = 0;
- virConfValuePtr pp;
- for (pp = p->list; pp; pp = p->next)
- len++;
- tls_allowed_ip_list =
- malloc ((1+len) * sizeof (char *));
- for (i = 0, pp = p->list; pp; ++i, pp = p->next) {
- if (pp->type != VIR_CONF_STRING) {
- qemudLog (QEMUD_ERR, "remoteReadConfigFile: %s: tls_allowed_ip_list: should be a string or list of strings\n", filename);
- return -1;
- }
- tls_allowed_ip_list[i] = strdup (pp->str);
- }
- tls_allowed_ip_list[i] = 0;
- break;
- }
+ virConfFree (conf);
+ return 0;
- default:
- qemudLog (QEMUD_ERR, "remoteReadConfigFile: %s: tls_allowed_ip_list: should be a string or list of strings\n", filename);
- return -1;
- }
+ free_and_fail:
+ virConfFree (conf);
+ free (mdns_name);
+ mdns_name = NULL;
+ free (unix_sock_ro_perms);
+ free (unix_sock_rw_perms);
+ free (unix_sock_group);
+
+ /* Don't bother trying to free tcp_port, tls_port, key_file, cert_file,
+ ca_file, or crl_file, since they are initialized to non-malloc'd
+ strings. Besides, these are static variables, and callers are
+ unlikely to call this function more than once, so there wouldn't
+ even be a real leak. */
+
+ if (tls_allowed_dn_list) {
+ int i;
+ for (i = 0; tls_allowed_dn_list[i]; i++)
+ free (tls_allowed_dn_list[i]);
+ free (tls_allowed_dn_list);
+ tls_allowed_dn_list = NULL;
+ }
+
+ if (tls_allowed_ip_list) {
+ int i;
+ for (i = 0; tls_allowed_ip_list[i]; i++)
+ free (tls_allowed_ip_list[i]);
+ free (tls_allowed_ip_list);
+ tls_allowed_ip_list = NULL;
}
- virConfFree (conf);
- return 0;
+ return -1;
}
/* Print command-line usage. */
diff --git a/src/conf.h b/src/conf.h
index 7a7ad25..53c9456 100644
--- a/src/conf.h
+++ b/src/conf.h
@@ -1,7 +1,7 @@
/**
* conf.h: parser for a subset of the Python encoded Xen configuration files
*
- * Copyright (C) 2006 Red Hat, Inc.
+ * Copyright (C) 2006, 2007 Red Hat, Inc.
*
* See COPYING.LIB for the License of this software
*
@@ -28,6 +28,21 @@ typedef enum {
VIR_CONF_LIST = 3 /* a list */
} virConfType;
+static inline const char *
+virConfTypeName (virConfType t)
+{
+ switch (t) {
+ case VIR_CONF_LONG:
+ return "long";
+ case VIR_CONF_STRING:
+ return "string";
+ case VIR_CONF_LIST:
+ return "list";
+ default:
+ return "*unexpected*";
+ }
+}
+
/**
* virConfValue:
* a value from the configuration file
@@ -80,3 +95,12 @@ int __virConfWriteMem (char *memory,
}
#endif
#endif /* __VIR_CONF_H__ */
+
+/*
+ * Local variables:
+ * indent-tabs-mode: nil
+ * c-indent-level: 4
+ * c-basic-offset: 4
+ * tab-width: 4
+ * End:
+ */
--
1.5.3.6.961.gecf4
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