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autofs-5.1.1 - fix create_client() RPC client handling
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From: Ian Kent <raven@themaw.net>
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The autofs socket minimization strategy is to reuse the socket
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descriptor when creating an RPC client for the same protocol.
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But in create_client() there is a case where the socket descriptor
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can be obtained from RPC client, the RPC client destroyed, but
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not cleared in the persistent data structure.
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In create_client(), once an attempt is done to get the socket
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descriptor, the RPC client should always be destroyed and cleared
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in the persistent data structure.
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Signed-off-by: Ian Kent <raven@themaw.net>
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---
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CHANGELOG | 1 +
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lib/rpc_subs.c | 21 ++++++++-------------
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2 files changed, 9 insertions(+), 13 deletions(-)
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--- autofs-5.0.7.orig/CHANGELOG
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+++ autofs-5.0.7/CHANGELOG
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@@ -295,6 +295,7 @@
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- fix prefix option handling in expand_entry().
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- fix sublink option not set from defaults.
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- fix error return in do_nfs_mount().
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+- fix create_client() RPC client handling.
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25/07/2012 autofs-5.0.7
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=======================
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--- autofs-5.0.7.orig/lib/rpc_subs.c
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+++ autofs-5.0.7/lib/rpc_subs.c
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@@ -663,14 +663,12 @@ static int create_client(struct conn_inf
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*client = NULL;
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if (info->client) {
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- if (!clnt_control(info->client, CLGET_FD, (char *) &fd)) {
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- fd = RPC_ANYSOCK;
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- clnt_destroy(info->client);
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- info->client = NULL;
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- } else {
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+ if (clnt_control(info->client, CLGET_FD, (char *) &fd))
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clnt_control(info->client, CLSET_FD_NCLOSE, NULL);
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- clnt_destroy(info->client);
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- }
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+ else
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+ fd = RPC_ANYSOCK;
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+ clnt_destroy(info->client);
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+ info->client = NULL;
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}
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if (info->addr) {
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@@ -686,7 +684,7 @@ static int create_client(struct conn_inf
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goto out_close;
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}
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- if (!info->client && fd != RPC_ANYSOCK) {
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+ if (fd != RPC_ANYSOCK) {
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close(fd);
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fd = RPC_ANYSOCK;
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}
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@@ -704,7 +702,6 @@ static int create_client(struct conn_inf
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if (ret) {
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error(LOGOPT_ANY,
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"hostname lookup failed: %s", gai_strerror(ret));
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- info->client = NULL;
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goto out_close;
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}
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@@ -723,7 +720,7 @@ static int create_client(struct conn_inf
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goto out_close;
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}
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- if (!info->client && fd != RPC_ANYSOCK) {
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+ if (fd != RPC_ANYSOCK) {
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close(fd);
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fd = RPC_ANYSOCK;
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}
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@@ -735,7 +732,6 @@ static int create_client(struct conn_inf
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done:
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if (!*client) {
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- info->client = NULL;
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ret = -ENOTCONN;
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goto out_close;
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}
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@@ -743,7 +739,6 @@ done:
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/* Close socket fd on destroy, as is default for rpcowned fds */
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if (!clnt_control(*client, CLSET_FD_CLOSE, NULL)) {
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clnt_destroy(*client);
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- info->client = NULL;
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ret = -ENOTCONN;
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goto out_close;
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}
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@@ -751,7 +746,7 @@ done:
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return 0;
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out_close:
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- if (fd != -1)
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+ if (fd != RPC_ANYSOCK)
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close(fd);
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return ret;
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}
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