[libvirt] [PATCH v3 19/34] Adapt to VIR_STRDUP and VIR_STRNDUP in src/rpc/*
Eric Blake
eblake at redhat.com
Thu May 9 03:32:32 UTC 2013
On 05/03/2013 08:53 AM, Michal Privoznik wrote:
> ---
> src/rpc/gendispatch.pl | 21 ++++--------
Ah, you DID notice the code generator, so that answers my comment on 18/34.
> src/rpc/virnetclient.c | 16 ++++------
> src/rpc/virnetmessage.c | 12 ++++---
> src/rpc/virnetsaslcontext.c | 6 ++--
> src/rpc/virnetserver.c | 6 ++--
> src/rpc/virnetserverclient.c | 10 ++----
> src/rpc/virnetservermdns.c | 6 ++--
> src/rpc/virnetsocket.c | 10 +++---
> src/rpc/virnetsshsession.c | 76 ++++++++++++++++++++++----------------------
> src/rpc/virnettlscontext.c | 26 +++++++--------
> 10 files changed, 82 insertions(+), 107 deletions(-)
>
> +++ b/src/rpc/virnetclient.c
> @@ -317,17 +318,14 @@ static virNetClientPtr virNetClientNew(virNetSocketPtr sock,
> client->wakeupSendFD = wakeupFD[1];
> wakeupFD[0] = wakeupFD[1] = -1;
>
> - if (hostname &&
> - !(client->hostname = strdup(hostname)))
> - goto no_memory;
> + if (hostname && VIR_STRDUP(client->hostname, hostname) < 0)
> + goto error;
Can simplify with NULL source.
> +++ b/src/rpc/virnetmessage.c
> @@ -485,21 +486,22 @@ void virNetMessageSaveError(virNetMessageErrorPtr rerr)
> rerr->code = verr->code;
> rerr->domain = verr->domain;
> if (verr->message && VIR_ALLOC(rerr->message) == 0)
> - *rerr->message = strdup(verr->message);
> + ignore_value(VIR_STRDUP_QUIET(*rerr->message, verr->message));
Correct use of VIR_STRDUP_QUIET here.
Hmm - wonder if there is a pre-existing bug. If VIR_ALLOC succeeds but
strdup fails, rerr->message points to a NULL pointer. The intent was
that we _try_ to copy the string, but if it fails, we are okay for the
RPC message to go out with a loss of information - but that should be
done with rerr->message being a NULL pointer, not pointing to a NULL
pointer. That is, I think this code should read:
if (verr->message && VIR_ALLOC(rerr->message) == 0 &&
VIR_STRDUP_QUIET(*rerr->message, verr->message) < 0)
VIR_FREE(rerr->message);
> rerr->level = verr->level;
> if (verr->str1 && VIR_ALLOC(rerr->str1) == 0)
> - *rerr->str1 = strdup(verr->str1);
> + ignore_value(VIR_STRDUP_QUIET(*rerr->str1, verr->str1));
> if (verr->str2 && VIR_ALLOC(rerr->str2) == 0)
> - *rerr->str2 = strdup(verr->str2);
> + ignore_value(VIR_STRDUP_QUIET(*rerr->str2, verr->str2));
> if (verr->str3 && VIR_ALLOC(rerr->str3) == 0)
> - *rerr->str3 = strdup(verr->str3);
> + ignore_value(VIR_STRDUP_QUIET(*rerr->str3, verr->str3));
Likewise for these three best-effort strings.
> rerr->int1 = verr->int1;
> rerr->int2 = verr->int2;
> } else {
> rerr->code = VIR_ERR_INTERNAL_ERROR;
> rerr->domain = VIR_FROM_RPC;
> if (VIR_ALLOC(rerr->message) == 0)
> - *rerr->message = strdup(_("Library function returned error but did not set virError"));
> + ignore_value(VIR_STRDUP_QUIET(*rerr->message,
> + _("Library function returned error but did not set virError")));
And another case where I think we should free rerr->message if strdup fails.
> +++ b/src/rpc/virnetserver.c
> @@ -387,11 +388,8 @@ virNetServerPtr virNetServerNew(size_t min_workers,
> srv->privileged = geteuid() == 0;
> srv->autoShutdownInhibitFd = -1;
>
> - if (mdnsGroupName &&
> - !(srv->mdnsGroupName = strdup(mdnsGroupName))) {
> - virReportOOMError();
> + if (mdnsGroupName && VIR_STRDUP(srv->mdnsGroupName, mdnsGroupName) < 0)
Can be simplified.
> +++ b/src/rpc/virnetserverclient.c
> @@ -681,22 +681,16 @@ virNetServerClientCreateIdentity(virNetServerClientPtr client)
> #if WITH_SASL
> if (client->sasl) {
> const char *identity = virNetSASLSessionGetIdentity(client->sasl);
> - if (identity &&
> - !(saslname = strdup(identity))) {
> - virReportOOMError();
> + if (identity && VIR_STRDUP(saslname, identity) < 0)
Can be simplified.
> goto cleanup;
> - }
> }
> #endif
>
> #if WITH_GNUTLS
> if (client->tls) {
> const char *identity = virNetTLSSessionGetX509DName(client->tls);
> - if (identity &&
> - !(x509dname = strdup(identity))) {
> - virReportOOMError();
> + if (identity && VIR_STRDUP(x509dname, identity) < 0)
and again.
> +++ b/src/rpc/virnetsocket.c
> @@ -800,10 +800,10 @@ virNetSocketNewConnectLibSSH2(const char *host,
> if (virNetSSHSessionSetChannelCommand(sess, command) != 0)
> goto error;
>
> - if (!(authMethodNext = authMethodsCopy = strdup(authMethods))) {
> - virReportOOMError();
> + if (VIR_STRDUP(authMethodsCopy, authMethods) < 0)
> goto error;
> - }
> +
> + authMethodNext = authMethodsCopy;
>
> while ((authMethod = strsep(&authMethodNext, ","))) {
Wonder if we should use virStringSplit instead of strsep().
> +++ b/src/rpc/virnetsshsession.c
> @@ -233,7 +233,7 @@ virNetSSHKbIntCb(const char *name ATTRIBUTE_UNUSED,
>
> /* fill data structures for auth callback */
> for (i = 0; i < num_prompts; i++) {
> - if (!(askcred[i].prompt = strdup(prompts[i].text))) {
> + if (VIR_STRDUP(askcred[i].prompt, prompts[i].text) < 0) {
> priv->authCbErr = VIR_NET_SSH_AUTHCB_OOM;
> goto cleanup;
Double-oom, unless you fix line 741 in
virNetSSHAuthenticateKeyboardInteractive()'s switch statement to stop
reporting oom when authCbErr says it has already been reported.
> @@ -1037,15 +1039,17 @@ virNetSSHSessionAuthAddPrivKeyAuth(virNetSSHSessionPtr sess,
>
> virObjectLock(sess);
>
> - if (!(user = strdup(username)) ||
> - !(file = strdup(keyfile)))
> - goto no_memory;
> + if (VIR_STRDUP(user, username) < 0 ||
> + VIR_STRDUP(file, keyfile) < 0)
> + goto error;
>
> - if (password && !(pass = strdup(password)))
> - goto no_memory;
> + if (password && VIR_STRDUP(pass, password) < 0)
> + goto error;
Can be simplified, and merged in with previous 'if'.
> @@ -1111,10 +1115,8 @@ virNetSSHSessionSetChannelCommand(virNetSSHSessionPtr sess,
>
> VIR_FREE(sess->channelCommand);
>
> - if (command && !(sess->channelCommand = strdup(command))) {
> - virReportOOMError();
> + if (command && VIR_STRDUP(sess->channelCommand, command) < 0)
> ret = -1;
Can be simplified.
> - }
>
> virObjectUnlock(sess);
> return ret;
> @@ -1137,8 +1139,8 @@ virNetSSHSessionSetHostKeyVerification(virNetSSHSessionPtr sess,
>
> VIR_FREE(sess->hostname);
>
> - if (hostname && !(sess->hostname = strdup(hostname)))
> - goto no_memory;
> + if (hostname && VIR_STRDUP(sess->hostname, hostname) < 0)
> + goto error;
and again.
> +++ b/src/rpc/virnettlscontext.c
> @@ -1168,11 +1167,8 @@ virNetTLSSessionPtr virNetTLSSessionNew(virNetTLSContextPtr ctxt,
> if (!(sess = virObjectLockableNew(virNetTLSSessionClass)))
> return NULL;
>
> - if (hostname &&
> - !(sess->hostname = strdup(hostname))) {
> - virReportOOMError();
> + if (hostname && VIR_STRDUP(sess->hostname, hostname) < 0)
> goto error;
and again.
ACK with minor cleanups.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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