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Diffstat (limited to 'fs/nfs/fs_context.c')
-rw-r--r--fs/nfs/fs_context.c51
1 files changed, 32 insertions, 19 deletions
diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index 0d444a90f513..09833ec102fc 100644
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -10,6 +10,7 @@
* Split from fs/nfs/super.c by David Howells <dhowells@redhat.com>
*/
+#include <linux/compat.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/fs_context.h>
@@ -20,6 +21,8 @@
#include "nfs.h"
#include "internal.h"
+#include "nfstrace.h"
+
#define NFSDBG_FACILITY NFSDBG_MOUNT
#if IS_ENABLED(CONFIG_NFS_V3)
@@ -79,6 +82,7 @@ enum nfs_param {
Opt_source,
Opt_tcp,
Opt_timeo,
+ Opt_trunkdiscovery,
Opt_udp,
Opt_v,
Opt_vers,
@@ -179,6 +183,7 @@ static const struct fs_parameter_spec nfs_fs_parameters[] = {
fsparam_string("source", Opt_source),
fsparam_flag ("tcp", Opt_tcp),
fsparam_u32 ("timeo", Opt_timeo),
+ fsparam_flag_no("trunkdiscovery", Opt_trunkdiscovery),
fsparam_flag ("udp", Opt_udp),
fsparam_flag ("v2", Opt_v),
fsparam_flag ("v3", Opt_v),
@@ -268,9 +273,9 @@ static const struct constant_table nfs_secflavor_tokens[] = {
* Address family must be initialized, and address must not be
* the ANY address for that family.
*/
-static int nfs_verify_server_address(struct sockaddr *addr)
+static int nfs_verify_server_address(struct sockaddr_storage *addr)
{
- switch (addr->sa_family) {
+ switch (addr->ss_family) {
case AF_INET: {
struct sockaddr_in *sa = (struct sockaddr_in *)addr;
return sa->sin_addr.s_addr != htonl(INADDR_ANY);
@@ -281,7 +286,6 @@ static int nfs_verify_server_address(struct sockaddr *addr)
}
}
- dfprintk(MOUNT, "NFS: Invalid IP address specified\n");
return 0;
}
@@ -375,7 +379,7 @@ static int nfs_parse_security_flavors(struct fs_context *fc,
char *string = param->string, *p;
int ret;
- dfprintk(MOUNT, "NFS: parsing %s=%s option\n", param->key, param->string);
+ trace_nfs_mount_assign(param->key, string);
while ((p = strsep(&string, ":")) != NULL) {
if (!*p)
@@ -477,11 +481,11 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
unsigned int len;
int ret, opt;
- dfprintk(MOUNT, "NFS: parsing nfs mount option '%s'\n", param->key);
+ trace_nfs_mount_option(param);
opt = fs_parse(fc, nfs_fs_parameters, param, &result);
if (opt < 0)
- return ctx->sloppy ? 1 : opt;
+ return (opt == -ENOPARAM && ctx->sloppy) ? 1 : opt;
if (fc->security)
ctx->has_sec_mnt_opts = 1;
@@ -514,7 +518,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
if (result.negated)
ctx->flags &= ~NFS_MOUNT_SOFTREVAL;
else
- ctx->flags &= NFS_MOUNT_SOFTREVAL;
+ ctx->flags |= NFS_MOUNT_SOFTREVAL;
break;
case Opt_posix:
if (result.negated)
@@ -528,6 +532,12 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
else
ctx->flags &= ~NFS_MOUNT_NOCTO;
break;
+ case Opt_trunkdiscovery:
+ if (result.negated)
+ ctx->flags &= ~NFS_MOUNT_TRUNK_DISCOVERY;
+ else
+ ctx->flags |= NFS_MOUNT_TRUNK_DISCOVERY;
+ break;
case Opt_ac:
if (result.negated)
ctx->flags |= NFS_MOUNT_NOAC;
@@ -674,6 +684,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
return ret;
break;
case Opt_vers:
+ trace_nfs_mount_assign(param->key, param->string);
ret = nfs_parse_version_string(fc, param->string);
if (ret < 0)
return ret;
@@ -685,6 +696,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
break;
case Opt_proto:
+ trace_nfs_mount_assign(param->key, param->string);
protofamily = AF_INET;
switch (lookup_constant(nfs_xprt_protocol_tokens, param->string, -1)) {
case Opt_xprt_udp6:
@@ -720,6 +732,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
break;
case Opt_mountproto:
+ trace_nfs_mount_assign(param->key, param->string);
mountfamily = AF_INET;
switch (lookup_constant(nfs_xprt_protocol_tokens, param->string, -1)) {
case Opt_xprt_udp6:
@@ -742,6 +755,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
break;
case Opt_addr:
+ trace_nfs_mount_assign(param->key, param->string);
len = rpc_pton(fc->net_ns, param->string, param->size,
&ctx->nfs_server.address,
sizeof(ctx->nfs_server._address));
@@ -750,16 +764,19 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
ctx->nfs_server.addrlen = len;
break;
case Opt_clientaddr:
+ trace_nfs_mount_assign(param->key, param->string);
kfree(ctx->client_address);
ctx->client_address = param->string;
param->string = NULL;
break;
case Opt_mounthost:
+ trace_nfs_mount_assign(param->key, param->string);
kfree(ctx->mount_server.hostname);
ctx->mount_server.hostname = param->string;
param->string = NULL;
break;
case Opt_mountaddr:
+ trace_nfs_mount_assign(param->key, param->string);
len = rpc_pton(fc->net_ns, param->string, param->size,
&ctx->mount_server.address,
sizeof(ctx->mount_server._address));
@@ -837,7 +854,6 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
*/
case Opt_sloppy:
ctx->sloppy = true;
- dfprintk(MOUNT, "NFS: relaxing parsing rules\n");
break;
}
@@ -870,10 +886,8 @@ static int nfs_parse_source(struct fs_context *fc,
size_t len;
const char *end;
- if (unlikely(!dev_name || !*dev_name)) {
- dfprintk(MOUNT, "NFS: device name not specified\n");
+ if (unlikely(!dev_name || !*dev_name))
return -EINVAL;
- }
/* Is the host name protected with square brakcets? */
if (*dev_name == '[') {
@@ -913,7 +927,7 @@ static int nfs_parse_source(struct fs_context *fc,
if (!ctx->nfs_server.export_path)
goto out_nomem;
- dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", ctx->nfs_server.export_path);
+ trace_nfs_mount_path(ctx->nfs_server.export_path);
return 0;
out_bad_devname:
@@ -955,7 +969,7 @@ static int nfs23_parse_monolithic(struct fs_context *fc,
{
struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct nfs_fh *mntfh = ctx->mntfh;
- struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
+ struct sockaddr_storage *sap = &ctx->nfs_server._address;
int extra_flags = NFS_MOUNT_LEGACY_INTERFACE;
int ret;
@@ -1030,7 +1044,7 @@ static int nfs23_parse_monolithic(struct fs_context *fc,
memcpy(sap, &data->addr, sizeof(data->addr));
ctx->nfs_server.addrlen = sizeof(data->addr);
ctx->nfs_server.port = ntohs(data->addr.sin_port);
- if (sap->sa_family != AF_INET ||
+ if (sap->ss_family != AF_INET ||
!nfs_verify_server_address(sap))
goto out_no_address;
@@ -1107,7 +1121,6 @@ out_no_sec:
return nfs_invalf(fc, "NFS: nfs_mount_data version supports only AUTH_SYS");
out_nomem:
- dfprintk(MOUNT, "NFS: not enough memory to handle mount options");
return -ENOMEM;
out_no_address:
@@ -1187,7 +1200,7 @@ static int nfs4_parse_monolithic(struct fs_context *fc,
struct nfs4_mount_data *data)
{
struct nfs_fs_context *ctx = nfs_fc2context(fc);
- struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
+ struct sockaddr_storage *sap = &ctx->nfs_server._address;
int ret;
char *c;
@@ -1239,7 +1252,7 @@ static int nfs4_parse_monolithic(struct fs_context *fc,
if (IS_ERR(c))
return PTR_ERR(c);
ctx->nfs_server.export_path = c;
- dfprintk(MOUNT, "NFS: MNTPATH: '%s'\n", c);
+ trace_nfs_mount_path(c);
c = strndup_user(data->client_addr.data, 16);
if (IS_ERR(c))
@@ -1301,7 +1314,7 @@ static int nfs_fs_context_validate(struct fs_context *fc)
{
struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct nfs_subversion *nfs_mod;
- struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
+ struct sockaddr_storage *sap = &ctx->nfs_server._address;
int max_namelen = PAGE_SIZE;
int max_pathlen = NFS_MAXPATHLEN;
int port = 0;
@@ -1527,7 +1540,7 @@ static int nfs_init_fs_context(struct fs_context *fc)
ctx->version = nfss->nfs_client->rpc_ops->version;
ctx->minorversion = nfss->nfs_client->cl_minorversion;
- memcpy(&ctx->nfs_server.address, &nfss->nfs_client->cl_addr,
+ memcpy(&ctx->nfs_server._address, &nfss->nfs_client->cl_addr,
ctx->nfs_server.addrlen);
if (fc->net_ns != net) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.