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-rw-r--r--fs/nfsd/Kconfig1
-rw-r--r--fs/nfsd/blocklayout.c2
-rw-r--r--fs/nfsd/export.c68
-rw-r--r--fs/nfsd/export.h15
-rw-r--r--fs/nfsd/netns.h23
-rw-r--r--fs/nfsd/nfs2acl.c67
-rw-r--r--fs/nfsd/nfs3acl.c45
-rw-r--r--fs/nfsd/nfs3proc.c93
-rw-r--r--fs/nfsd/nfs3xdr.c589
-rw-r--r--fs/nfsd/nfs4proc.c12
-rw-r--r--fs/nfsd/nfs4state.c124
-rw-r--r--fs/nfsd/nfscache.c52
-rw-r--r--fs/nfsd/nfsctl.c22
-rw-r--r--fs/nfsd/nfsd.h2
-rw-r--r--fs/nfsd/nfsfh.c4
-rw-r--r--fs/nfsd/nfsfh.h5
-rw-r--r--fs/nfsd/nfsproc.c92
-rw-r--r--fs/nfsd/nfssvc.c34
-rw-r--r--fs/nfsd/nfsxdr.c350
-rw-r--r--fs/nfsd/state.h3
-rw-r--r--fs/nfsd/stats.c114
-rw-r--r--fs/nfsd/stats.h96
-rw-r--r--fs/nfsd/vfs.c4
-rw-r--r--fs/nfsd/xdr.h12
-rw-r--r--fs/nfsd/xdr3.h20
25 files changed, 1042 insertions, 807 deletions
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index dbbc583d6273..821e5913faee 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -76,6 +76,7 @@ config NFSD_V4
select CRYPTO_MD5
select CRYPTO_SHA256
select GRACE_PERIOD
+ select NFS_V4_2_SSC_HELPER if NFS_V4_2
help
This option enables support in your system's NFS server for
version 4 of the NFS protocol (RFC 3530).
diff --git a/fs/nfsd/blocklayout.c b/fs/nfsd/blocklayout.c
index a07c39c94bbd..1058659a8d31 100644
--- a/fs/nfsd/blocklayout.c
+++ b/fs/nfsd/blocklayout.c
@@ -254,7 +254,7 @@ again:
req->cmd[4] = bufflen & 0xff;
req->cmd_len = COMMAND_SIZE(INQUIRY);
- blk_execute_rq(rq->q, NULL, rq, 1);
+ blk_execute_rq(NULL, rq, 1);
if (req->result) {
pr_err("pNFS: INQUIRY 0x83 failed with: %x\n",
req->result);
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index e456421f68b4..9421dae22737 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -331,12 +331,29 @@ static void nfsd4_fslocs_free(struct nfsd4_fs_locations *fsloc)
fsloc->locations = NULL;
}
+static int export_stats_init(struct export_stats *stats)
+{
+ stats->start_time = ktime_get_seconds();
+ return nfsd_percpu_counters_init(stats->counter, EXP_STATS_COUNTERS_NUM);
+}
+
+static void export_stats_reset(struct export_stats *stats)
+{
+ nfsd_percpu_counters_reset(stats->counter, EXP_STATS_COUNTERS_NUM);
+}
+
+static void export_stats_destroy(struct export_stats *stats)
+{
+ nfsd_percpu_counters_destroy(stats->counter, EXP_STATS_COUNTERS_NUM);
+}
+
static void svc_export_put(struct kref *ref)
{
struct svc_export *exp = container_of(ref, struct svc_export, h.ref);
path_put(&exp->ex_path);
auth_domain_put(exp->ex_client);
nfsd4_fslocs_free(&exp->ex_fslocs);
+ export_stats_destroy(&exp->ex_stats);
kfree(exp->ex_uuid);
kfree_rcu(exp, ex_rcu);
}
@@ -698,22 +715,47 @@ static void exp_flags(struct seq_file *m, int flag, int fsid,
kuid_t anonu, kgid_t anong, struct nfsd4_fs_locations *fslocs);
static void show_secinfo(struct seq_file *m, struct svc_export *exp);
+static int is_export_stats_file(struct seq_file *m)
+{
+ /*
+ * The export_stats file uses the same ops as the exports file.
+ * We use the file's name to determine the reported info per export.
+ * There is no rename in nsfdfs, so d_name.name is stable.
+ */
+ return !strcmp(m->file->f_path.dentry->d_name.name, "export_stats");
+}
+
static int svc_export_show(struct seq_file *m,
struct cache_detail *cd,
struct cache_head *h)
{
- struct svc_export *exp ;
+ struct svc_export *exp;
+ bool export_stats = is_export_stats_file(m);
- if (h ==NULL) {
- seq_puts(m, "#path domain(flags)\n");
+ if (h == NULL) {
+ if (export_stats)
+ seq_puts(m, "#path domain start-time\n#\tstats\n");
+ else
+ seq_puts(m, "#path domain(flags)\n");
return 0;
}
exp = container_of(h, struct svc_export, h);
seq_path(m, &exp->ex_path, " \t\n\\");
seq_putc(m, '\t');
seq_escape(m, exp->ex_client->name, " \t\n\\");
+ if (export_stats) {
+ seq_printf(m, "\t%lld\n", exp->ex_stats.start_time);
+ seq_printf(m, "\tfh_stale: %lld\n",
+ percpu_counter_sum_positive(&exp->ex_stats.counter[EXP_STATS_FH_STALE]));
+ seq_printf(m, "\tio_read: %lld\n",
+ percpu_counter_sum_positive(&exp->ex_stats.counter[EXP_STATS_IO_READ]));
+ seq_printf(m, "\tio_write: %lld\n",
+ percpu_counter_sum_positive(&exp->ex_stats.counter[EXP_STATS_IO_WRITE]));
+ seq_putc(m, '\n');
+ return 0;
+ }
seq_putc(m, '(');
- if (test_bit(CACHE_VALID, &h->flags) &&
+ if (test_bit(CACHE_VALID, &h->flags) &&
!test_bit(CACHE_NEGATIVE, &h->flags)) {
exp_flags(m, exp->ex_flags, exp->ex_fsid,
exp->ex_anon_uid, exp->ex_anon_gid, &exp->ex_fslocs);
@@ -754,6 +796,7 @@ static void svc_export_init(struct cache_head *cnew, struct cache_head *citem)
new->ex_layout_types = 0;
new->ex_uuid = NULL;
new->cd = item->cd;
+ export_stats_reset(&new->ex_stats);
}
static void export_update(struct cache_head *cnew, struct cache_head *citem)
@@ -786,10 +829,15 @@ static void export_update(struct cache_head *cnew, struct cache_head *citem)
static struct cache_head *svc_export_alloc(void)
{
struct svc_export *i = kmalloc(sizeof(*i), GFP_KERNEL);
- if (i)
- return &i->h;
- else
+ if (!i)
+ return NULL;
+
+ if (export_stats_init(&i->ex_stats)) {
+ kfree(i);
return NULL;
+ }
+
+ return &i->h;
}
static const struct cache_detail svc_export_cache_template = {
@@ -1251,10 +1299,14 @@ static int e_show(struct seq_file *m, void *p)
struct cache_head *cp = p;
struct svc_export *exp = container_of(cp, struct svc_export, h);
struct cache_detail *cd = m->private;
+ bool export_stats = is_export_stats_file(m);
if (p == SEQ_START_TOKEN) {
seq_puts(m, "# Version 1.1\n");
- seq_puts(m, "# Path Client(Flags) # IPs\n");
+ if (export_stats)
+ seq_puts(m, "# Path Client Start-time\n#\tStats\n");
+ else
+ seq_puts(m, "# Path Client(Flags) # IPs\n");
return 0;
}
diff --git a/fs/nfsd/export.h b/fs/nfsd/export.h
index e7daa1f246f0..ee0e3aba4a6e 100644
--- a/fs/nfsd/export.h
+++ b/fs/nfsd/export.h
@@ -6,6 +6,7 @@
#define NFSD_EXPORT_H
#include <linux/sunrpc/cache.h>
+#include <linux/percpu_counter.h>
#include <uapi/linux/nfsd/export.h>
#include <linux/nfs4.h>
@@ -46,6 +47,19 @@ struct exp_flavor_info {
u32 flags;
};
+/* Per-export stats */
+enum {
+ EXP_STATS_FH_STALE,
+ EXP_STATS_IO_READ,
+ EXP_STATS_IO_WRITE,
+ EXP_STATS_COUNTERS_NUM
+};
+
+struct export_stats {
+ time64_t start_time;
+ struct percpu_counter counter[EXP_STATS_COUNTERS_NUM];
+};
+
struct svc_export {
struct cache_head h;
struct auth_domain * ex_client;
@@ -62,6 +76,7 @@ struct svc_export {
struct nfsd4_deviceid_map *ex_devid_map;
struct cache_detail *cd;
struct rcu_head ex_rcu;
+ struct export_stats ex_stats;
};
/* an "export key" (expkey) maps a filehandlefragement to an
diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index 7346acda9d76..c330f5bd0cf3 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -10,6 +10,7 @@
#include <net/net_namespace.h>
#include <net/netns/generic.h>
+#include <linux/percpu_counter.h>
/* Hash tables for nfs4_clientid state */
#define CLIENT_HASH_BITS 4
@@ -21,6 +22,14 @@
struct cld_net;
struct nfsd4_client_tracking_ops;
+enum {
+ /* cache misses due only to checksum comparison failures */
+ NFSD_NET_PAYLOAD_MISSES,
+ /* amount of memory (in bytes) currently consumed by the DRC */
+ NFSD_NET_DRC_MEM_USAGE,
+ NFSD_NET_COUNTERS_NUM
+};
+
/*
* Represents a nfsd "container". With respect to nfsv4 state tracking, the
* fields of interest are the *_id_hashtbls and the *_name_tree. These track
@@ -149,20 +158,16 @@ struct nfsd_net {
/*
* Stats and other tracking of on the duplicate reply cache.
- * These fields and the "rc" fields in nfsdstats are modified
- * with only the per-bucket cache lock, which isn't really safe
- * and should be fixed if we want the statistics to be
- * completely accurate.
+ * The longest_chain* fields are modified with only the per-bucket
+ * cache lock, which isn't really safe and should be fixed if we want
+ * these statistics to be completely accurate.
*/
/* total number of entries */
atomic_t num_drc_entries;
- /* cache misses due only to checksum comparison failures */
- unsigned int payload_misses;
-
- /* amount of memory (in bytes) currently consumed by the DRC */
- unsigned int drc_mem_usage;
+ /* Per-netns stats counters */
+ struct percpu_counter counter[NFSD_NET_COUNTERS_NUM];
/* longest hash chain seen */
unsigned int longest_chain;
diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
index b83f222558e3..855e17772eba 100644
--- a/fs/nfsd/nfs2acl.c
+++ b/fs/nfsd/nfs2acl.c
@@ -190,63 +190,49 @@ out:
static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_getaclargs *argp = rqstp->rq_argp;
- p = nfs2svc_decode_fh(p, &argp->fh);
- if (!p)
+ if (!svcxdr_decode_fhandle(xdr, &argp->fh))
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
return 0;
- argp->mask = ntohl(*p); p++;
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
-
static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_setaclargs *argp = rqstp->rq_argp;
- struct kvec *head = rqstp->rq_arg.head;
- unsigned int base;
- int n;
- p = nfs2svc_decode_fh(p, &argp->fh);
- if (!p)
+ if (!svcxdr_decode_fhandle(xdr, &argp->fh))
return 0;
- argp->mask = ntohl(*p++);
- if (argp->mask & ~NFS_ACL_MASK ||
- !xdr_argsize_check(rqstp, p))
+ if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
return 0;
-
- base = (char *)p - (char *)head->iov_base;
- n = nfsacl_decode(&rqstp->rq_arg, base, NULL,
- (argp->mask & NFS_ACL) ?
- &argp->acl_access : NULL);
- if (n > 0)
- n = nfsacl_decode(&rqstp->rq_arg, base + n, NULL,
- (argp->mask & NFS_DFACL) ?
- &argp->acl_default : NULL);
- return (n > 0);
-}
-
-static int nfsaclsvc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p)
-{
- struct nfsd_fhandle *argp = rqstp->rq_argp;
-
- p = nfs2svc_decode_fh(p, &argp->fh);
- if (!p)
+ if (argp->mask & ~NFS_ACL_MASK)
+ return 0;
+ if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_ACL) ?
+ &argp->acl_access : NULL))
return 0;
- return xdr_argsize_check(rqstp, p);
+ if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_DFACL) ?
+ &argp->acl_default : NULL))
+ return 0;
+
+ return 1;
}
static int nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p)
{
- struct nfsd3_accessargs *argp = rqstp->rq_argp;
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
+ struct nfsd3_accessargs *args = rqstp->rq_argp;
- p = nfs2svc_decode_fh(p, &argp->fh);
- if (!p)
+ if (!svcxdr_decode_fhandle(xdr, &args->fh))
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->access) < 0)
return 0;
- argp->access = ntohl(*p++);
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
/*
@@ -373,6 +359,7 @@ static const struct svc_procedure nfsd_acl_procedures2[5] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST,
+ .pc_name = "NULL",
},
[ACLPROC2_GETACL] = {
.pc_func = nfsacld_proc_getacl,
@@ -383,6 +370,7 @@ static const struct svc_procedure nfsd_acl_procedures2[5] = {
.pc_ressize = sizeof(struct nfsd3_getaclres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+1+2*(1+ACL),
+ .pc_name = "GETACL",
},
[ACLPROC2_SETACL] = {
.pc_func = nfsacld_proc_setacl,
@@ -393,16 +381,18 @@ static const struct svc_procedure nfsd_acl_procedures2[5] = {
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT,
+ .pc_name = "SETACL",
},
[ACLPROC2_GETATTR] = {
.pc_func = nfsacld_proc_getattr,
- .pc_decode = nfsaclsvc_decode_fhandleargs,
+ .pc_decode = nfssvc_decode_fhandleargs,
.pc_encode = nfsaclsvc_encode_attrstatres,
.pc_release = nfsaclsvc_release_attrstat,
.pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT,
+ .pc_name = "GETATTR",
},
[ACLPROC2_ACCESS] = {
.pc_func = nfsacld_proc_access,
@@ -413,6 +403,7 @@ static const struct svc_procedure nfsd_acl_procedures2[5] = {
.pc_ressize = sizeof(struct nfsd3_accessres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT+1,
+ .pc_name = "SETATTR",
},
};
diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c
index f18ec7e8094d..9a6f18d74d14 100644
--- a/fs/nfsd/nfs3acl.c
+++ b/fs/nfsd/nfs3acl.c
@@ -126,43 +126,39 @@ out:
/*
* XDR decode functions
*/
+
static int nfs3svc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_getaclargs *args = rqstp->rq_argp;
- p = nfs3svc_decode_fh(p, &args->fh);
- if (!p)
+ if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->mask) < 0)
return 0;
- args->mask = ntohl(*p); p++;
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
-
static int nfs3svc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p)
{
- struct nfsd3_setaclargs *args = rqstp->rq_argp;
- struct kvec *head = rqstp->rq_arg.head;
- unsigned int base;
- int n;
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
+ struct nfsd3_setaclargs *argp = rqstp->rq_argp;
- p = nfs3svc_decode_fh(p, &args->fh);
- if (!p)
+ if (!svcxdr_decode_nfs_fh3(xdr, &argp->fh))
return 0;
- args->mask = ntohl(*p++);
- if (args->mask & ~NFS_ACL_MASK ||
- !xdr_argsize_check(rqstp, p))
+ if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
+ return 0;
+ if (argp->mask & ~NFS_ACL_MASK)
+ return 0;
+ if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_ACL) ?
+ &argp->acl_access : NULL))
+ return 0;
+ if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_DFACL) ?
+ &argp->acl_default : NULL))
return 0;
- base = (char *)p - (char *)head->iov_base;
- n = nfsacl_decode(&rqstp->rq_arg, base, NULL,
- (args->mask & NFS_ACL) ?
- &args->acl_access : NULL);
- if (n > 0)
- n = nfsacl_decode(&rqstp->rq_arg, base + n, NULL,
- (args->mask & NFS_DFACL) ?
- &args->acl_default : NULL);
- return (n > 0);
+ return 1;
}
/*
@@ -253,6 +249,7 @@ static const struct svc_procedure nfsd_acl_procedures3[3] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST,
+ .pc_name = "NULL",
},
[ACLPROC3_GETACL] = {
.pc_func = nfsd3_proc_getacl,
@@ -263,6 +260,7 @@ static const struct svc_procedure nfsd_acl_procedures3[3] = {
.pc_ressize = sizeof(struct nfsd3_getaclres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+1+2*(1+ACL),
+ .pc_name = "GETACL",
},
[ACLPROC3_SETACL] = {
.pc_func = nfsd3_proc_setacl,
@@ -273,6 +271,7 @@ static const struct svc_procedure nfsd_acl_procedures3[3] = {
.pc_ressize = sizeof(struct nfsd3_attrstat),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+pAT,
+ .pc_name = "SETACL",
},
};
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index 76931f4f57c3..8675851199f8 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -124,15 +124,16 @@ nfsd3_proc_access(struct svc_rqst *rqstp)
static __be32
nfsd3_proc_readlink(struct svc_rqst *rqstp)
{
- struct nfsd3_readlinkargs *argp = rqstp->rq_argp;
+ struct nfsd_fhandle *argp = rqstp->rq_argp;
struct nfsd3_readlinkres *resp = rqstp->rq_resp;
+ char *buffer = page_address(*(rqstp->rq_next_page++));
dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh));
/* Read the symlink. */
fh_copy(&resp->fh, &argp->fh);
resp->len = NFS3_MAXPATHLEN;
- resp->status = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len);
+ resp->status = nfsd_readlink(rqstp, &resp->fh, buffer, &resp->len);
return rpc_success;
}
@@ -144,25 +145,38 @@ nfsd3_proc_read(struct svc_rqst *rqstp)
{
struct nfsd3_readargs *argp = rqstp->rq_argp;
struct nfsd3_readres *resp = rqstp->rq_resp;
- u32 max_blocksize = svc_max_payload(rqstp);
- unsigned long cnt = min(argp->count, max_blocksize);
+ u32 max_blocksize = svc_max_payload(rqstp);
+ unsigned int len;
+ int v;
+
+ argp->count = min_t(u32, argp->count, max_blocksize);
dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n",
SVCFH_fmt(&argp->fh),
(unsigned long) argp->count,
(unsigned long long) argp->offset);
+ v = 0;
+ len = argp->count;
+ while (len > 0) {
+ struct page *page = *(rqstp->rq_next_page++);
+
+ rqstp->rq_vec[v].iov_base = page_address(page);
+ rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
+ len -= rqstp->rq_vec[v].iov_len;
+ v++;
+ }
+
/* Obtain buffer pointer for payload.
* 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof)
* + 1 (xdr opaque byte count) = 26
*/
- resp->count = cnt;
+ resp->count = argp->count;
svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4);
fh_copy(&resp->fh, &argp->fh);
resp->status = nfsd_read(rqstp, &resp->fh, argp->offset,
- rqstp->rq_vec, argp->vlen, &resp->count,
- &resp->eof);
+ rqstp->rq_vec, v, &resp->count, &resp->eof);
return rpc_success;
}
@@ -421,6 +435,23 @@ nfsd3_proc_link(struct svc_rqst *rqstp)
return rpc_success;
}
+static void nfsd3_init_dirlist_pages(struct svc_rqst *rqstp,
+ struct nfsd3_readdirres *resp,
+ int count)
+{
+ count = min_t(u32, count, svc_max_payload(rqstp));
+
+ /* Convert byte count to number of words (i.e. >> 2),
+ * and reserve room for the NULL ptr & eof flag (-2 words) */
+ resp->buflen = (count >> 2) - 2;
+
+ resp->buffer = page_address(*rqstp->rq_next_page);
+ while (count > 0) {
+ rqstp->rq_next_page++;
+ count -= PAGE_SIZE;
+ }
+}
+
/*
* Read a portion of a directory.
*/
@@ -430,6 +461,7 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp)
struct nfsd3_readdirargs *argp = rqstp->rq_argp;
struct nfsd3_readdirres *resp = rqstp->rq_resp;
int count = 0;
+ loff_t offset;
struct page **p;
caddr_t page_addr = NULL;
@@ -437,18 +469,16 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp)
SVCFH_fmt(&argp->fh),
argp->count, (u32) argp->cookie);
- /* Make sure we've room for the NULL ptr & eof flag, and shrink to
- * client read size */
- count = (argp->count >> 2) - 2;
+ nfsd3_init_dirlist_pages(rqstp, resp, argp->count);
/* Read directory and encode entries on the fly */
fh_copy(&resp->fh, &argp->fh);
- resp->buflen = count;
resp->common.err = nfs_ok;
- resp->buffer = argp->buffer;
resp->rqstp = rqstp;
- resp->status = nfsd_readdir(rqstp, &resp->fh, (loff_t *)&argp->cookie,
+ offset = argp->cookie;
+
+ resp->status = nfsd_readdir(rqstp, &resp->fh, &offset,
&resp->common, nfs3svc_encode_entry);
memcpy(resp->verf, argp->verf, 8);
count = 0;
@@ -464,8 +494,6 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp)
}
resp->count = count >> 2;
if (resp->offset) {
- loff_t offset = argp->cookie;
-
if (unlikely(resp->offset1)) {
/* we ended up with offset on a page boundary */
*resp->offset = htonl(offset >> 32);
@@ -498,16 +526,12 @@ nfsd3_proc_readdirplus(struct svc_rqst *rqstp)
SVCFH_fmt(&argp->fh),
argp->count, (u32) argp->cookie);
- /* Convert byte count to number of words (i.e. >> 2),
- * and reserve room for the NULL ptr & eof flag (-2 words) */
- resp->count = (argp->count >> 2) - 2;
+ nfsd3_init_dirlist_pages(rqstp, resp, argp->count);
/* Read directory and encode entries on the fly */
fh_copy(&resp->fh, &argp->fh);
resp->common.err = nfs_ok;
- resp->buffer = argp->buffer;
- resp->buflen = resp->count;
resp->rqstp = rqstp;
offset = argp->cookie;
@@ -683,7 +707,6 @@ out:
* NFSv3 Server procedures.
* Only the results of non-idempotent operations are cached.
*/
-#define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle
#define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat
#define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat
#define nfsd3_mkdirargs nfsd3_createargs
@@ -708,16 +731,18 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST,
+ .pc_name = "NULL",
},
[NFS3PROC_GETATTR] = {
.pc_func = nfsd3_proc_getattr,
.pc_decode = nfs3svc_decode_fhandleargs,
.pc_encode = nfs3svc_encode_attrstatres,
.pc_release = nfs3svc_release_fhandle,
- .pc_argsize = sizeof(struct nfsd3_fhandleargs),
+ .pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd3_attrstatres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT,
+ .pc_name = "GETATTR",
},
[NFS3PROC_SETATTR] = {
.pc_func = nfsd3_proc_setattr,
@@ -728,6 +753,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_wccstatres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+WC,
+ .pc_name = "SETATTR",
},
[NFS3PROC_LOOKUP] = {
.pc_func = nfsd3_proc_lookup,
@@ -738,6 +764,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_diropres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+FH+pAT+pAT,
+ .pc_name = "LOOKUP",
},
[NFS3PROC_ACCESS] = {
.pc_func = nfsd3_proc_access,
@@ -748,16 +775,18 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_accessres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+pAT+1,
+ .pc_name = "ACCESS",
},
[NFS3PROC_READLINK] = {
.pc_func = nfsd3_proc_readlink,
- .pc_decode = nfs3svc_decode_readlinkargs,
+ .pc_decode = nfs3svc_decode_fhandleargs,
.pc_encode = nfs3svc_encode_readlinkres,
.pc_release = nfs3svc_release_fhandle,
- .pc_argsize = sizeof(struct nfsd3_readlinkargs),
+ .pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd3_readlinkres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4,
+ .pc_name = "READLINK",
},
[NFS3PROC_READ] = {
.pc_func = nfsd3_proc_read,
@@ -768,6 +797,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_readres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4,
+ .pc_name = "READ",
},
[NFS3PROC_WRITE] = {
.pc_func = nfsd3_proc_write,
@@ -778,6 +808,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_writeres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+WC+4,
+ .pc_name = "WRITE",
},
[NFS3PROC_CREATE] = {
.pc_func = nfsd3_proc_create,
@@ -788,6 +819,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_createres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+(1+FH+pAT)+WC,
+ .pc_name = "CREATE",
},
[NFS3PROC_MKDIR] = {
.pc_func = nfsd3_proc_mkdir,
@@ -798,6 +830,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_createres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+(1+FH+pAT)+WC,
+ .pc_name = "MKDIR",
},
[NFS3PROC_SYMLINK] = {
.pc_func = nfsd3_proc_symlink,
@@ -808,6 +841,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_createres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+(1+FH+pAT)+WC,
+ .pc_name = "SYMLINK",
},
[NFS3PROC_MKNOD] = {
.pc_func = nfsd3_proc_mknod,
@@ -818,6 +852,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_createres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+(1+FH+pAT)+WC,
+ .pc_name = "MKNOD",
},
[NFS3PROC_REMOVE] = {
.pc_func = nfsd3_proc_remove,
@@ -828,6 +863,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_wccstatres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+WC,
+ .pc_name = "REMOVE",
},
[NFS3PROC_RMDIR] = {
.pc_func = nfsd3_proc_rmdir,
@@ -838,6 +874,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_wccstatres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+WC,
+ .pc_name = "RMDIR",
},
[NFS3PROC_RENAME] = {
.pc_func = nfsd3_proc_rename,
@@ -848,6 +885,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_renameres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+WC+WC,
+ .pc_name = "RENAME",
},
[NFS3PROC_LINK] = {
.pc_func = nfsd3_proc_link,
@@ -858,6 +896,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_linkres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+pAT+WC,
+ .pc_name = "LINK",
},
[NFS3PROC_READDIR] = {
.pc_func = nfsd3_proc_readdir,
@@ -867,6 +906,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_argsize = sizeof(struct nfsd3_readdirargs),
.pc_ressize = sizeof(struct nfsd3_readdirres),
.pc_cachetype = RC_NOCACHE,
+ .pc_name = "READDIR",
},
[NFS3PROC_READDIRPLUS] = {
.pc_func = nfsd3_proc_readdirplus,
@@ -876,6 +916,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_argsize = sizeof(struct nfsd3_readdirplusargs),
.pc_ressize = sizeof(struct nfsd3_readdirres),
.pc_cachetype = RC_NOCACHE,
+ .pc_name = "READDIRPLUS",
},
[NFS3PROC_FSSTAT] = {
.pc_func = nfsd3_proc_fsstat,
@@ -885,6 +926,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_fsstatres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+pAT+2*6+1,
+ .pc_name = "FSSTAT",
},
[NFS3PROC_FSINFO] = {
.pc_func = nfsd3_proc_fsinfo,
@@ -894,6 +936,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_fsinfores),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+pAT+12,
+ .pc_name = "FSINFO",
},
[NFS3PROC_PATHCONF] = {
.pc_func = nfsd3_proc_pathconf,
@@ -903,6 +946,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_pathconfres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+pAT+6,
+ .pc_name = "PATHCONF",
},
[NFS3PROC_COMMIT] = {
.pc_func = nfsd3_proc_commit,
@@ -913,6 +957,7 @@ static const struct svc_procedure nfsd_procedures3[22] = {
.pc_ressize = sizeof(struct nfsd3_commitres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+WC+2,
+ .pc_name = "COMMIT",
},
};
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 821db21ba072..9d9a01ce0b27 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -29,8 +29,9 @@ static u32 nfs3_ftypes[] = {
/*
- * XDR functions for basic NFS types
+ * Basic NFSv3 data types (RFC 1813 Sections 2.5 and 2.6)
*/
+
static __be32 *
encode_time3(__be32 *p, struct timespec64 *time)
{
@@ -38,32 +39,47 @@ encode_time3(__be32 *p, struct timespec64 *time)
return p;
}
-static __be32 *
-decode_time3(__be32 *p, struct timespec64 *time)
+static bool
+svcxdr_decode_nfstime3(struct xdr_stream *xdr, struct timespec64 *timep)
{
- time->tv_sec = ntohl(*p++);
- time->tv_nsec = ntohl(*p++);
- return p;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, XDR_UNIT * 2);
+ if (!p)
+ return false;
+ timep->tv_sec = be32_to_cpup(p++);
+ timep->tv_nsec = be32_to_cpup(p);
+
+ return true;
}
-static __be32 *
-decode_fh(__be32 *p, struct svc_fh *fhp)
+/**
+ * svcxdr_decode_nfs_fh3 - Decode an NFSv3 file handle
+ * @xdr: XDR stream positioned at an undecoded NFSv3 FH
+ * @fhp: OUT: filled-in server file handle
+ *
+ * Return values:
+ * %false: The encoded file handle was not valid
+ * %true: @fhp has been initialized
+ */
+bool
+svcxdr_decode_nfs_fh3(struct xdr_stream *xdr, struct svc_fh *fhp)
{
- unsigned int size;
+ __be32 *p;
+ u32 size;
+
+ if (xdr_stream_decode_u32(xdr, &size) < 0)
+ return false;
+ if (size == 0 || size > NFS3_FHSIZE)
+ return false;
+ p = xdr_inline_decode(xdr, size);
+ if (!p)
+ return false;
fh_init(fhp, NFS3_FHSIZE);
- size = ntohl(*p++);
- if (size > NFS3_FHSIZE)
- return NULL;
-
- memcpy(&fhp->fh_handle.fh_base, p, size);
fhp->fh_handle.fh_size = size;
- return p + XDR_QUADLEN(size);
-}
+ memcpy(&fhp->fh_handle.fh_base, p, size);
-/* Helper function for NFSv3 ACL code */
-__be32 *nfs3svc_decode_fh(__be32 *p, struct svc_fh *fhp)
-{
- return decode_fh(p, fhp);
+ return true;
}
static __be32 *
@@ -76,69 +92,165 @@ encode_fh(__be32 *p, struct svc_fh *fhp)
return p + XDR_QUADLEN(size);
}
-/*
- * Decode a file name and make sure that the path contains
- * no slashes or null bytes.
- */
-static __be32 *
-decode_filename(__be32 *p, char **namp, unsigned int *lenp)
+static bool
+svcxdr_decode_filename3(struct xdr_stream *xdr, char **name, unsigned int *len)
{
- char *name;
- unsigned int i;
+ u32 size, i;
+ __be32 *p;
+ char *c;
+
+ if (xdr_stream_decode_u32(xdr, &size) < 0)
+ return false;
+ if (size == 0 || size > NFS3_MAXNAMLEN)
+ return false;
+ p = xdr_inline_decode(xdr, size);
+ if (!p)
+ return false;
- if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS3_MAXNAMLEN)) != NULL) {
- for (i = 0, name = *namp; i < *lenp; i++, name++) {
- if (*name == '\0' || *name == '/')
- return NULL;
- }
+ *len = size;
+ *name = (char *)p;
+ for (i = 0, c = *name; i < size; i++, c++) {
+ if (*c == '\0' || *c == '/')
+ return false;
}
- return p;
+ return true;
}
-static __be32 *
-decode_sattr3(__be32 *p, struct iattr *iap, struct user_namespace *userns)
+static bool
+svcxdr_decode_diropargs3(struct xdr_stream *xdr, struct svc_fh *fhp,
+ char **name, unsigned int *len)
+{
+ return svcxdr_decode_nfs_fh3(xdr, fhp) &&
+ svcxdr_decode_filename3(xdr, name, len);
+}
+
+static bool
+svcxdr_decode_sattr3(struct svc_rqst *rqstp, struct xdr_stream *xdr,
+ struct iattr *iap)
{
- u32 tmp;
+ u32 set_it;
iap->ia_valid = 0;
- if (*p++) {
+ if (xdr_stream_decode_bool(xdr, &set_it) < 0)
+ return false;
+ if (set_it) {
+ u32 mode;
+
+ if (xdr_stream_decode_u32(xdr, &mode) < 0)
+ return false;
iap->ia_valid |= ATTR_MODE;
- iap->ia_mode = ntohl(*p++);
+ iap->ia_mode = mode;
}
- if (*p++) {
- iap->ia_uid = make_kuid(userns, ntohl(*p++));
+ if (xdr_stream_decode_bool(xdr, &set_it) < 0)
+ return false;
+ if (set_it) {
+ u32 uid;
+
+ if (xdr_stream_decode_u32(xdr, &uid) < 0)
+ return false;
+ iap->ia_uid = make_kuid(nfsd_user_namespace(rqstp), uid);
if (uid_valid(iap->ia_uid))
iap->ia_valid |= ATTR_UID;
}
- if (*p++) {
- iap->ia_gid = make_kgid(userns, ntohl(*p++));
+ if (xdr_stream_decode_bool(xdr, &set_it) < 0)
+ return false;
+ if (set_it) {
+ u32 gid;
+
+ if (xdr_stream_decode_u32(xdr, &gid) < 0)
+ return false;
+ iap->ia_gid = make_kgid(nfsd_user_namespace(rqstp), gid);
if (gid_valid(iap->ia_gid))
iap->ia_valid |= ATTR_GID;
}
- if (*p++) {
- u64 newsize;
+ if (xdr_stream_decode_bool(xdr, &set_it) < 0)
+ return false;
+ if (set_it) {
+ u64 newsize;
+ if (xdr_stream_decode_u64(xdr, &newsize) < 0)
+ return false;
iap->ia_valid |= ATTR_SIZE;
- p = xdr_decode_hyper(p, &newsize);
iap->ia_size = min_t(u64, newsize, NFS_OFFSET_MAX);
}
- if ((tmp = ntohl(*p++)) == 1) { /* set to server time */
+ if (xdr_stream_decode_u32(xdr, &set_it) < 0)
+ return false;
+ switch (set_it) {
+ case DONT_CHANGE:
+ break;
+ case SET_TO_SERVER_TIME:
iap->ia_valid |= ATTR_ATIME;
- } else if (tmp == 2) { /* set to client time */
+ break;
+ case SET_TO_CLIENT_TIME:
+ if (!svcxdr_decode_nfstime3(xdr, &iap->ia_atime))
+ return false;
iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET;
- iap->ia_atime.tv_sec = ntohl(*p++);
- iap->ia_atime.tv_nsec = ntohl(*p++);
+ break;
+ default:
+ return false;
}
- if ((tmp = ntohl(*p++)) == 1) { /* set to server time */
+ if (xdr_stream_decode_u32(xdr, &set_it) < 0)
+ return false;
+ switch (set_it) {
+ case DONT_CHANGE:
+ break;
+ case SET_TO_SERVER_TIME:
iap->ia_valid |= ATTR_MTIME;
- } else if (tmp == 2) { /* set to client time */
+ break;
+ case SET_TO_CLIENT_TIME:
+ if (!svcxdr_decode_nfstime3(xdr, &iap->ia_mtime))
+ return false;
iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET;
- iap->ia_mtime.tv_sec = ntohl(*p++);
- iap->ia_mtime.tv_nsec = ntohl(*p++);
+ break;
+ default:
+ return false;
}
- return p;
+
+ return true;
+}
+
+static bool
+svcxdr_decode_sattrguard3(struct xdr_stream *xdr, struct nfsd3_sattrargs *args)
+{
+ __be32 *p;
+ u32 check;
+
+ if (xdr_stream_decode_bool(xdr, &check) < 0)
+ return false;
+ if (check) {
+ p = xdr_inline_decode(xdr, XDR_UNIT * 2);
+ if (!p)
+ return false;
+ args->check_guard = 1;
+ args->guardtime = be32_to_cpup(p);
+ } else
+ args->check_guard = 0;
+
+ return true;
+}
+
+static bool
+svcxdr_decode_specdata3(struct xdr_stream *xdr, struct nfsd3_mknodargs *args)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, XDR_UNIT * 2);
+ if (!p)
+ return false;
+ args->major = be32_to_cpup(p++);
+ args->minor = be32_to_cpup(p);
+
+ return true;
+}
+
+static bool
+svcxdr_decode_devicedata3(struct svc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfsd3_mknodargs *args)
+{
+ return svcxdr_decode_sattr3(rqstp, xdr, &args->attrs) &&
+ svcxdr_decode_specdata3(xdr, args);
}
static __be32 *encode_fsid(__be32 *p, struct svc_fh *fhp)
@@ -252,6 +364,11 @@ encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
return encode_post_op_attr(rqstp, p, fhp);
}
+static bool fs_supports_change_attribute(struct super_block *sb)
+{
+ return sb->s_flags & SB_I_VERSION || sb->s_export_op->fetch_iversion;
+}
+
/*
* Fill in the pre_op attr for the wcc data
*/
@@ -260,24 +377,26 @@ void fill_pre_wcc(struct svc_fh *fhp)
struct inode *inode;
struct kstat stat;
bool v4 = (fhp->fh_maxsize == NFS4_FHSIZE);
- __be32 err;
if (fhp->fh_no_wcc || fhp->fh_pre_saved)
return;
inode = d_inode(fhp->fh_dentry);
- err = fh_getattr(fhp, &stat);
- if (err) {
- /* Grab the times from inode anyway */
- stat.mtime = inode->i_mtime;
- stat.ctime = inode->i_ctime;
- stat.size = inode->i_size;
+ if (fs_supports_change_attribute(inode->i_sb) || !v4) {
+ __be32 err = fh_getattr(fhp, &stat);
+
+ if (err) {
+ /* Grab the times from inode anyway */
+ stat.mtime = inode->i_mtime;
+ stat.ctime = inode->i_ctime;
+ stat.size = inode->i_size;
+ }
+ fhp->fh_pre_mtime = stat.mtime;
+ fhp->fh_pre_ctime = stat.ctime;
+ fhp->fh_pre_size = stat.size;
}
if (v4)
fhp->fh_pre_change = nfsd4_change_attribute(&stat, inode);
- fhp->fh_pre_mtime = stat.mtime;
- fhp->fh_pre_ctime = stat.ctime;
- fhp->fh_pre_size = stat.size;
fhp->fh_pre_saved = true;
}
@@ -288,7 +407,6 @@ void fill_post_wcc(struct svc_fh *fhp)
{
bool v4 = (fhp->fh_maxsize == NFS4_FHSIZE);
struct inode *inode = d_inode(fhp->fh_dentry);
- __be32 err;
if (fhp->fh_no_wcc)
return;
@@ -296,12 +414,16 @@ void fill_post_wcc(struct svc_fh *fhp)
if (fhp->fh_post_saved)
printk("nfsd: inode locked twice during operation.\n");
- err = fh_getattr(fhp, &fhp->fh_post_attr);
- if (err) {
- fhp->fh_post_saved = false;
- fhp->fh_post_attr.ctime = inode->i_ctime;
- } else
- fhp->fh_post_saved = true;
+ fhp->fh_post_saved = true;
+
+ if (fs_supports_change_attribute(inode->i_sb) || !v4) {
+ __be32 err = fh_getattr(fhp, &fhp->fh_post_attr);
+
+ if (err) {
+ fhp->fh_post_saved = false;
+ fhp->fh_post_attr.ctime = inode->i_ctime;
+ }
+ }
if (v4)
fhp->fh_post_change =
nfsd4_change_attribute(&fhp->fh_post_attr, inode);
@@ -312,331 +434,277 @@ void fill_post_wcc(struct svc_fh *fhp)
*/
int
-nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_fhandle *args = rqstp->rq_argp;
- p = decode_fh(p, &args->fh);
- if (!p)
- return 0;
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_nfs_fh3(xdr, &args->fh);
}
int
nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_sattrargs *args = rqstp->rq_argp;
- p = decode_fh(p, &args->fh);
- if (!p)
- return 0;
- p = decode_sattr3(p, &args->attrs, nfsd_user_namespace(rqstp));
-
- if ((args->check_guard = ntohl(*p++)) != 0) {
- struct timespec64 time;
- p = decode_time3(p, &time);
- args->guardtime = time.tv_sec;
- }
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_nfs_fh3(xdr, &args->fh) &&
+ svcxdr_decode_sattr3(rqstp, xdr, &args->attrs) &&
+ svcxdr_decode_sattrguard3(xdr, args);
}
int
nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_diropargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->fh))
- || !(p = decode_filename(p, &args->name, &args->len)))
- return 0;
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len);
}
int
nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_accessargs *args = rqstp->rq_argp;
- p = decode_fh(p, &args->fh);
- if (!p)
+ if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->access) < 0)
return 0;
- args->access = ntohl(*p++);
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
int
nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_readargs *args = rqstp->rq_argp;
- unsigned int len;
- int v;
- u32 max_blocksize = svc_max_payload(rqstp);
- p = decode_fh(p, &args->fh);
- if (!p)
+ if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
+ return 0;
+ if (xdr_stream_decode_u64(xdr, &args->offset) < 0)
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->count) < 0)
return 0;
- p = xdr_decode_hyper(p, &args->offset);
-
- args->count = ntohl(*p++);
- len = min(args->count, max_blocksize);
-
- /* set up the kvec */
- v=0;
- while (len > 0) {
- struct page *p = *(rqstp->rq_next_page++);
- rqstp->rq_vec[v].iov_base = page_address(p);
- rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
- len -= rqstp->rq_vec[v].iov_len;
- v++;
- }
- args->vlen = v;
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
int
nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_writeargs *args = rqstp->rq_argp;
- unsigned int len, hdr, dlen;
u32 max_blocksize = svc_max_payload(rqstp);
struct kvec *head = rqstp->rq_arg.head;
struct kvec *tail = rqstp->rq_arg.tail;
+ size_t remaining;
- p = decode_fh(p, &args->fh);
- if (!p)
+ if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
return 0;
- p = xdr_decode_hyper(p, &args->offset);
-
- args->count = ntohl(*p++);
- args->stable = ntohl(*p++);
- len = args->len = ntohl(*p++);
- if ((void *)p > head->iov_base + head->iov_len)
+ if (xdr_stream_decode_u64(xdr, &args->offset) < 0)
return 0;
- /*
- * The count must equal the amount of data passed.
- */
- if (args->count != args->len)
+ if (xdr_stream_decode_u32(xdr, &args->count) < 0)
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->stable) < 0)
return 0;
- /*
- * Check to make sure that we got the right number of
- * bytes.
- */
- hdr = (void*)p - head->iov_base;
- dlen = head->iov_len + rqstp->rq_arg.page_len + tail->iov_len - hdr;
- /*
- * Round the length of the data which was specified up to
- * the next multiple of XDR units and then compare that
- * against the length which was actually received.
- * Note that when RPCSEC/GSS (for example) is used, the
- * data buffer can be padded so dlen might be larger
- * than required. It must never be smaller.
- */
- if (dlen < XDR_QUADLEN(len)*4)
+ /* opaque data */
+ if (xdr_stream_decode_u32(xdr, &args->len) < 0)
return 0;
+ /* request sanity */
+ if (args->count != args->len)
+ return 0;
+ remaining = head->iov_len + rqstp->rq_arg.page_len + tail->iov_len;
+ remaining -= xdr_stream_pos(xdr);
+ if (remaining < xdr_align_size(args->len))
+ return 0;
if (args->count > max_blocksize) {
args->count = max_blocksize;
- len = args->len = max_blocksize;
+ args->len = max_blocksize;
}
- args->first.iov_base = (void *)p;
- args->first.iov_len = head->iov_len - hdr;
+ args->first.iov_base = xdr->p;
+ args->first.iov_len = head->iov_len - xdr_stream_pos(xdr);
+
return 1;
}
int
nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_createargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->fh))
- || !(p = decode_filename(p, &args->name, &args->len)))
+ if (!svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len))
return 0;
-
- switch (args->createmode = ntohl(*p++)) {
+ if (xdr_stream_decode_u32(xdr, &args->createmode) < 0)
+ return 0;
+ switch (args->createmode) {
case NFS3_CREATE_UNCHECKED:
case NFS3_CREATE_GUARDED:
- p = decode_sattr3(p, &args->attrs, nfsd_user_namespace(rqstp));
- break;
+ return svcxdr_decode_sattr3(rqstp, xdr, &args->attrs);
case NFS3_CREATE_EXCLUSIVE:
- args->verf = p;
- p += 2;
+ args->verf = xdr_inline_decode(xdr, NFS3_CREATEVERFSIZE);
+ if (!args->verf)
+ return 0;
break;
default:
return 0;
}
-
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
int
nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_createargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->fh)) ||
- !(p = decode_filename(p, &args->name, &args->len)))
- return 0;
- p = decode_sattr3(p, &args->attrs, nfsd_user_namespace(rqstp));
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_diropargs3(xdr, &args->fh,
+ &args->name, &args->len) &&
+ svcxdr_decode_sattr3(rqstp, xdr, &args->attrs);
}
int
nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_symlinkargs *args = rqstp->rq_argp;
- char *base = (char *)p;
- size_t dlen;
+ struct kvec *head = rqstp->rq_arg.head;
+ struct kvec *tail = rqstp->rq_arg.tail;
+ size_t remaining;
- if (!(p = decode_fh(p, &args->ffh)) ||
- !(p = decode_filename(p, &args->fname, &args->flen)))
+ if (!svcxdr_decode_diropargs3(xdr, &args->ffh, &args->fname, &args->flen))
+ return 0;
+ if (!svcxdr_decode_sattr3(rqstp, xdr, &args->attrs))
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->tlen) < 0)
return 0;
- p = decode_sattr3(p, &args->attrs, nfsd_user_namespace(rqstp));
- args->tlen = ntohl(*p++);
+ /* request sanity */
+ remaining = head->iov_len + rqstp->rq_arg.page_len + tail->iov_len;
+ remaining -= xdr_stream_pos(xdr);
+ if (remaining < xdr_align_size(args->tlen))
+ return 0;
- args->first.iov_base = p;
- args->first.iov_len = rqstp->rq_arg.head[0].iov_len;
- args->first.iov_len -= (char *)p - base;
+ args->first.iov_base = xdr->p;
+ args->first.iov_len = head->iov_len - xdr_stream_pos(xdr);
- dlen = args->first.iov_len + rqstp->rq_arg.page_len +
- rqstp->rq_arg.tail[0].iov_len;
- if (dlen < XDR_QUADLEN(args->tlen) << 2)
- return 0;
return 1;
}
int
nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_mknodargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->fh))
- || !(p = decode_filename(p, &args->name, &args->len)))
+ if (!svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len))
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->ftype) < 0)
+ return 0;
+ switch (args->ftype) {
+ case NF3CHR:
+ case NF3BLK:
+ return svcxdr_decode_devicedata3(rqstp, xdr, args);
+ case NF3SOCK:
+ case NF3FIFO:
+ return svcxdr_decode_sattr3(rqstp, xdr, &args->attrs);
+ case NF3REG:
+ case NF3DIR:
+ case NF3LNK:
+ /* Valid XDR but illegal file types */
+ break;
+ default:
return 0;
-
- args->ftype = ntohl(*p++);
-
- if (args->ftype == NF3BLK || args->ftype == NF3CHR
- || args->ftype == NF3SOCK || args->ftype == NF3FIFO)
- p = decode_sattr3(p, &args->attrs, nfsd_user_namespace(rqstp));
-
- if (args->ftype == NF3BLK || args->ftype == NF3CHR) {
- args->major = ntohl(*p++);
- args->minor = ntohl(*p++);
}
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
int
nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_renameargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->ffh))
- || !(p = decode_filename(p, &args->fname, &args->flen))
- || !(p = decode_fh(p, &args->tfh))
- || !(p = decode_filename(p, &args->tname, &args->tlen)))
- return 0;
-
- return xdr_argsize_check(rqstp, p);
-}
-
-int
-nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p)
-{
- struct nfsd3_readlinkargs *args = rqstp->rq_argp;
-
- p = decode_fh(p, &args->fh);
- if (!p)
- return 0;
- args->buffer = page_address(*(rqstp->rq_next_page++));
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_diropargs3(xdr, &args->ffh,
+ &args->fname, &args->flen) &&
+ svcxdr_decode_diropargs3(xdr, &args->tfh,
+ &args->tname, &args->tlen);
}
int
nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_linkargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->ffh))
- || !(p = decode_fh(p, &args->tfh))
- || !(p = decode_filename(p, &args->tname, &args->tlen)))
- return 0;
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_nfs_fh3(xdr, &args->ffh) &&
+ svcxdr_decode_diropargs3(xdr, &args->tfh,
+ &args->tname, &args->tlen);
}
int
nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_readdirargs *args = rqstp->rq_argp;
- int len;
- u32 max_blocksize = svc_max_payload(rqstp);
- p = decode_fh(p, &args->fh);
- if (!p)
+ if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
+ return 0;
+ if (xdr_stream_decode_u64(xdr, &args->cookie) < 0)
+ return 0;
+ args->verf = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE);
+ if (!args->verf)
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->count) < 0)
return 0;
- p = xdr_decode_hyper(p, &args->cookie);
- args->verf = p; p += 2;
- args->dircount = ~0;
- args->count = ntohl(*p++);
- len = args->count = min_t(u32, args->count, max_blocksize);
-
- while (len > 0) {
- struct page *p = *(rqstp->rq_next_page++);
- if (!args->buffer)
- args->buffer = page_address(p);
- len -= PAGE_SIZE;
- }
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
int
nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_readdirargs *args = rqstp->rq_argp;
- int len;
- u32 max_blocksize = svc_max_payload(rqstp);
+ u32 dircount;
- p = decode_fh(p, &args->fh);
- if (!p)
+ if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
+ return 0;
+ if (xdr_stream_decode_u64(xdr, &args->cookie) < 0)
+ return 0;
+ args->verf = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE);
+ if (!args->verf)
+ return 0;
+ /* dircount is ignored */
+ if (xdr_stream_decode_u32(xdr, &dircount) < 0)
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->count) < 0)
return 0;
- p = xdr_decode_hyper(p, &args->cookie);
- args->verf = p; p += 2;
- args->dircount = ntohl(*p++);
- args->count = ntohl(*p++);
-
- len = args->count = min(args->count, max_blocksize);
- while (len > 0) {
- struct page *p = *(rqstp->rq_next_page++);
- if (!args->buffer)
- args->buffer = page_address(p);
- len -= PAGE_SIZE;
- }
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
int
nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd3_commitargs *args = rqstp->rq_argp;
- p = decode_fh(p, &args->fh);
- if (!p)
+
+ if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
+ return 0;
+ if (xdr_stream_decode_u64(xdr, &args->offset) < 0)
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->count) < 0)
return 0;
- p = xdr_decode_hyper(p, &args->offset);
- args->count = ntohl(*p++);
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
/*
@@ -865,9 +933,14 @@ compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp,
if (isdotent(name, namlen)) {
if (namlen == 2) {
dchild = dget_parent(dparent);
- /* filesystem root - cannot return filehandle for ".." */
+ /*
+ * Don't return filehandle for ".." if we're at
+ * the filesystem or export root:
+ */
if (dchild == dparent)
goto out;
+ if (dparent == exp->ex_path.dentry)
+ goto out;
} else
dchild = dget(dparent);
} else
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 8d6d2678abad..acdb3cd806a1 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -378,8 +378,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
* Before RECLAIM_COMPLETE done, server should deny new lock
*/
if (nfsd4_has_session(cstate) &&
- !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
- &cstate->session->se_client->cl_flags) &&
+ !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, &cstate->clp->cl_flags) &&
open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
return nfserr_grace;
@@ -428,8 +427,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
goto out;
break;
case NFS4_OPEN_CLAIM_PREVIOUS:
- status = nfs4_check_open_reclaim(&open->op_clientid,
- cstate, nn);
+ status = nfs4_check_open_reclaim(cstate->clp);
if (status)
goto out;
open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
@@ -1888,7 +1886,7 @@ nfsd4_getdeviceinfo(struct svc_rqst *rqstp,
nfserr = nfs_ok;
if (gdp->gd_maxcount != 0) {
nfserr = ops->proc_getdeviceinfo(exp->ex_path.mnt->mnt_sb,
- rqstp, cstate->session->se_client, gdp);
+ rqstp, cstate->clp, gdp);
}
gdp->gd_notify_types &= ops->notify_types;
@@ -2174,7 +2172,7 @@ nfsd4_proc_null(struct svc_rqst *rqstp)
static inline void nfsd4_increment_op_stats(u32 opnum)
{
if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
- nfsdstats.nfs4_opcount[opnum]++;
+ percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_NFS4_OP(opnum)]);
}
static const struct nfsd4_operation nfsd4_ops[];
@@ -3305,6 +3303,7 @@ static const struct svc_procedure nfsd_procedures4[2] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = 1,
+ .pc_name = "NULL",
},
[NFSPROC4_COMPOUND] = {
.pc_func = nfsd4_proc_compound,
@@ -3315,6 +3314,7 @@ static const struct svc_procedure nfsd_procedures4[2] = {
.pc_release = nfsd4_release_compoundargs,
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = NFSD_BUFSIZE/4,
+ .pc_name = "COMPOUND",
},
};
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 1d2cd6a88f61..423fd6683f3a 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3891,6 +3891,7 @@ nfsd4_reclaim_complete(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate, union nfsd4_op_u *u)
{
struct nfsd4_reclaim_complete *rc = &u->reclaim_complete;
+ struct nfs4_client *clp = cstate->clp;
__be32 status = 0;
if (rc->rca_one_fs) {
@@ -3904,12 +3905,11 @@ nfsd4_reclaim_complete(struct svc_rqst *rqstp,
}
status = nfserr_complete_already;
- if (test_and_set_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
- &cstate->session->se_client->cl_flags))
+ if (test_and_set_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, &clp->cl_flags))
goto out;
status = nfserr_stale_clientid;
- if (is_client_expired(cstate->session->se_client))
+ if (is_client_expired(clp))
/*
* The following error isn't really legal.
* But we only get here if the client just explicitly
@@ -3920,8 +3920,8 @@ nfsd4_reclaim_complete(struct svc_rqst *rqstp,
goto out;
status = nfs_ok;
- nfsd4_client_record_create(cstate->session->se_client);
- inc_reclaim_complete(cstate->session->se_client);
+ nfsd4_client_record_create(clp);
+ inc_reclaim_complete(clp);
out:
return status;
}
@@ -4633,40 +4633,37 @@ static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4
return nfserr_bad_seqid;
}
-static __be32 lookup_clientid(clientid_t *clid,
- struct nfsd4_compound_state *cstate,
- struct nfsd_net *nn,
- bool sessions)
+static struct nfs4_client *lookup_clientid(clientid_t *clid, bool sessions,
+ struct nfsd_net *nn)
{
struct nfs4_client *found;
+ spin_lock(&nn->client_lock);
+ found = find_confirmed_client(clid, sessions, nn);
+ if (found)
+ atomic_inc(&found->cl_rpc_users);
+ spin_unlock(&nn->client_lock);
+ return found;
+}
+
+static __be32 set_client(clientid_t *clid,
+ struct nfsd4_compound_state *cstate,
+ struct nfsd_net *nn)
+{
if (cstate->clp) {
- found = cstate->clp;
- if (!same_clid(&found->cl_clientid, clid))
+ if (!same_clid(&cstate->clp->cl_clientid, clid))
return nfserr_stale_clientid;
return nfs_ok;
}
-
if (STALE_CLIENTID(clid, nn))
return nfserr_stale_clientid;
-
/*
- * For v4.1+ we get the client in the SEQUENCE op. If we don't have one
- * cached already then we know this is for is for v4.0 and "sessions"
- * will be false.
+ * We're in the 4.0 case (otherwise the SEQUENCE op would have
+ * set cstate->clp), so session = false:
*/
- WARN_ON_ONCE(cstate->session);
- spin_lock(&nn->client_lock);
- found = find_confirmed_client(clid, sessions, nn);
- if (!found) {
- spin_unlock(&nn->client_lock);
+ cstate->clp = lookup_clientid(clid, false, nn);
+ if (!cstate->clp)
return nfserr_expired;
- }
- atomic_inc(&found->cl_rpc_users);
- spin_unlock(&nn->client_lock);
-
- /* Cache the nfs4_client in cstate! */
- cstate->clp = found;
return nfs_ok;
}
@@ -4680,8 +4677,6 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
struct nfs4_openowner *oo = NULL;
__be32 status;
- if (STALE_CLIENTID(&open->op_clientid, nn))
- return nfserr_stale_clientid;
/*
* In case we need it later, after we've already created the
* file and don't want to risk a further failure:
@@ -4690,7 +4685,7 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate,
if (open->op_file == NULL)
return nfserr_jukebox;
- status = lookup_clientid(clientid, cstate, nn, false);
+ status = set_client(clientid, cstate, nn);
if (status)
return status;
clp = cstate->clp;
@@ -5300,17 +5295,14 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
trace_nfsd_clid_renew(clid);
- status = lookup_clientid(clid, cstate, nn, false);
+ status = set_client(clid, cstate, nn);
if (status)
- goto out;
+ return status;
clp = cstate->clp;
- status = nfserr_cb_path_down;
if (!list_empty(&clp->cl_delegations)
&& clp->cl_cb_state != NFSD4_CB_UP)
- goto out;
- status = nfs_ok;
-out:
- return status;
+ return nfserr_cb_path_down;
+ return nfs_ok;
}
void
@@ -5686,8 +5678,7 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
if (ZERO_STATEID(stateid) || ONE_STATEID(stateid) ||
CLOSE_STATEID(stateid))
return nfserr_bad_stateid;
- status = lookup_clientid(&stateid->si_opaque.so_clid, cstate, nn,
- false);
+ status = set_client(&stateid->si_opaque.so_clid, cstate, nn);
if (status == nfserr_stale_clientid) {
if (cstate->session)
return nfserr_bad_stateid;
@@ -5818,21 +5809,27 @@ static __be32 find_cpntf_state(struct nfsd_net *nn, stateid_t *st,
{
__be32 status;
struct nfs4_cpntf_state *cps = NULL;
- struct nfsd4_compound_state cstate;
+ struct nfs4_client *found;
status = manage_cpntf_state(nn, st, NULL, &cps);
if (status)
return status;
cps->cpntf_time = ktime_get_boottime_seconds();
- memset(&cstate, 0, sizeof(cstate));
- status = lookup_clientid(&cps->cp_p_clid, &cstate, nn, true);
- if (status)
+
+ status = nfserr_expired;
+ found = lookup_clientid(&cps->cp_p_clid, true, nn);
+ if (!found)
goto out;
- status = nfsd4_lookup_stateid(&cstate, &cps->cp_p_stateid,
- NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID,
- stid, nn);
- put_client_renew(cstate.clp);
+
+ *stid = find_stateid_by_type(found, &cps->cp_p_stateid,
+ NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID);
+ if (*stid)
+ status = nfs_ok;
+ else
+ status = nfserr_bad_stateid;
+
+ put_client_renew(found);
out:
nfs4_put_cpntf_state(nn, cps);
return status;
@@ -5921,7 +5918,7 @@ nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
{
struct nfsd4_test_stateid *test_stateid = &u->test_stateid;
struct nfsd4_test_stateid_id *stateid;
- struct nfs4_client *cl = cstate->session->se_client;
+ struct nfs4_client *cl = cstate->clp;
list_for_each_entry(stateid, &test_stateid->ts_stateid_list, ts_id_list)
stateid->ts_id_status =
@@ -5967,7 +5964,7 @@ nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
stateid_t *stateid = &free_stateid->fr_stateid;
struct nfs4_stid *s;
struct nfs4_delegation *dp;
- struct nfs4_client *cl = cstate->session->se_client;
+ struct nfs4_client *cl = cstate->clp;
__be32 ret = nfserr_bad_stateid;
spin_lock(&cl->cl_lock);
@@ -6696,13 +6693,9 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (nfsd4_has_session(cstate))
/* See rfc 5661 18.10.3: given clientid is ignored: */
memcpy(&lock->lk_new_clientid,
- &cstate->session->se_client->cl_clientid,
+ &cstate->clp->cl_clientid,
sizeof(clientid_t));
- status = nfserr_stale_clientid;
- if (STALE_CLIENTID(&lock->lk_new_clientid, nn))
- goto out;
-
/* validate and update open stateid and open seqid */
status = nfs4_preprocess_confirmed_seqid_op(cstate,
lock->lk_new_open_seqid,
@@ -6909,8 +6902,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
return nfserr_inval;
if (!nfsd4_has_session(cstate)) {
- status = lookup_clientid(&lockt->lt_clientid, cstate, nn,
- false);
+ status = set_client(&lockt->lt_clientid, cstate, nn);
if (status)
goto out;
}
@@ -7094,7 +7086,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
dprintk("nfsd4_release_lockowner clientid: (%08x/%08x):\n",
clid->cl_boot, clid->cl_id);
- status = lookup_clientid(clid, cstate, nn, false);
+ status = set_client(clid, cstate, nn);
if (status)
return status;
@@ -7230,25 +7222,13 @@ nfsd4_find_reclaim_client(struct xdr_netobj name, struct nfsd_net *nn)
return NULL;
}
-/*
-* Called from OPEN. Look for clientid in reclaim list.
-*/
__be32
-nfs4_check_open_reclaim(clientid_t *clid,
- struct nfsd4_compound_state *cstate,
- struct nfsd_net *nn)
+nfs4_check_open_reclaim(struct nfs4_client *clp)
{
- __be32 status;
-
- /* find clientid in conf_id_hashtbl */
- status = lookup_clientid(clid, cstate, nn, false);
- if (status)
- return nfserr_reclaim_bad;
-
- if (test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, &cstate->clp->cl_flags))
+ if (test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, &clp->cl_flags))
return nfserr_no_grace;
- if (nfsd4_client_record_check(cstate->clp))
+ if (nfsd4_client_record_check(clp))
return nfserr_reclaim_bad;
return nfs_ok;
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 80c90fc231a5..96cdf77925f3 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -121,14 +121,14 @@ nfsd_reply_cache_free_locked(struct nfsd_drc_bucket *b, struct svc_cacherep *rp,
struct nfsd_net *nn)
{
if (rp->c_type == RC_REPLBUFF && rp->c_replvec.iov_base) {
- nn->drc_mem_usage -= rp->c_replvec.iov_len;
+ nfsd_stats_drc_mem_usage_sub(nn, rp->c_replvec.iov_len);
kfree(rp->c_replvec.iov_base);
}
if (rp->c_state != RC_UNUSED) {
rb_erase(&rp->c_node, &b->rb_head);
list_del(&rp->c_lru);
atomic_dec(&nn->num_drc_entries);
- nn->drc_mem_usage -= sizeof(*rp);
+ nfsd_stats_drc_mem_usage_sub(nn, sizeof(*rp));
}
kmem_cache_free(drc_slab, rp);
}
@@ -154,6 +154,16 @@ void nfsd_drc_slab_free(void)
kmem_cache_destroy(drc_slab);
}
+static int nfsd_reply_cache_stats_init(struct nfsd_net *nn)
+{
+ return nfsd_percpu_counters_init(nn->counter, NFSD_NET_COUNTERS_NUM);
+}
+
+static void nfsd_reply_cache_stats_destroy(struct nfsd_net *nn)
+{
+ nfsd_percpu_counters_destroy(nn->counter, NFSD_NET_COUNTERS_NUM);
+}
+
int nfsd_reply_cache_init(struct nfsd_net *nn)
{
unsigned int hashsize;
@@ -165,12 +175,16 @@ int nfsd_reply_cache_init(struct nfsd_net *nn)
hashsize = nfsd_hashsize(nn->max_drc_entries);
nn->maskbits = ilog2(hashsize);
+ status = nfsd_reply_cache_stats_init(nn);
+ if (status)
+ goto out_nomem;
+
nn->nfsd_reply_cache_shrinker.scan_objects = nfsd_reply_cache_scan;
nn->nfsd_reply_cache_shrinker.count_objects = nfsd_reply_cache_count;
nn->nfsd_reply_cache_shrinker.seeks = 1;
status = register_shrinker(&nn->nfsd_reply_cache_shrinker);
if (status)
- goto out_nomem;
+ goto out_stats_destroy;
nn->drc_hashtbl = kvzalloc(array_size(hashsize,
sizeof(*nn->drc_hashtbl)), GFP_KERNEL);
@@ -186,6 +200,8 @@ int nfsd_reply_cache_init(struct nfsd_net *nn)
return 0;
out_shrinker:
unregister_shrinker(&nn->nfsd_reply_cache_shrinker);
+out_stats_destroy:
+ nfsd_reply_cache_stats_destroy(nn);
out_nomem:
printk(KERN_ERR "nfsd: failed to allocate reply cache\n");
return -ENOMEM;
@@ -196,6 +212,7 @@ void nfsd_reply_cache_shutdown(struct nfsd_net *nn)
struct svc_cacherep *rp;
unsigned int i;
+ nfsd_reply_cache_stats_destroy(nn);
unregister_shrinker(&nn->nfsd_reply_cache_shrinker);
for (i = 0; i < nn->drc_hashsize; i++) {
@@ -324,7 +341,7 @@ nfsd_cache_key_cmp(const struct svc_cacherep *key,
{
if (key->c_key.k_xid == rp->c_key.k_xid &&
key->c_key.k_csum != rp->c_key.k_csum) {
- ++nn->payload_misses;
+ nfsd_stats_payload_misses_inc(nn);
trace_nfsd_drc_mismatch(nn, key, rp);
}
@@ -407,7 +424,7 @@ int nfsd_cache_lookup(struct svc_rqst *rqstp)
rqstp->rq_cacherep = NULL;
if (type == RC_NOCACHE) {
- nfsdstats.rcnocache++;
+ nfsd_stats_rc_nocache_inc();
goto out;
}
@@ -429,12 +446,12 @@ int nfsd_cache_lookup(struct svc_rqst *rqstp)
goto found_entry;
}
- nfsdstats.rcmisses++;
+ nfsd_stats_rc_misses_inc();
rqstp->rq_cacherep = rp;
rp->c_state = RC_INPROG;
atomic_inc(&nn->num_drc_entries);
- nn->drc_mem_usage += sizeof(*rp);
+ nfsd_stats_drc_mem_usage_add(nn, sizeof(*rp));
/* go ahead and prune the cache */
prune_bucket(b, nn);
@@ -446,7 +463,7 @@ out:
found_entry:
/* We found a matching entry which is either in progress or done. */
- nfsdstats.rchits++;
+ nfsd_stats_rc_hits_inc();
rtn = RC_DROPIT;
/* Request being processed */
@@ -548,7 +565,7 @@ void nfsd_cache_update(struct svc_rqst *rqstp, int cachetype, __be32 *statp)
return;
}
spin_lock(&b->cache_lock);
- nn->drc_mem_usage += bufsize;
+ nfsd_stats_drc_mem_usage_add(nn, bufsize);
lru_put_end(b, rp);
rp->c_secure = test_bit(RQ_SECURE, &rqstp->rq_flags);
rp->c_type = cachetype;
@@ -588,13 +605,18 @@ static int nfsd_reply_cache_stats_show(struct seq_file *m, void *v)
seq_printf(m, "max entries: %u\n", nn->max_drc_entries);
seq_printf(m, "num entries: %u\n",
- atomic_read(&nn->num_drc_entries));
+ atomic_read(&nn->num_drc_entries));
seq_printf(m, "hash buckets: %u\n", 1 << nn->maskbits);
- seq_printf(m, "mem usage: %u\n", nn->drc_mem_usage);
- seq_printf(m, "cache hits: %u\n", nfsdstats.rchits);
- seq_printf(m, "cache misses: %u\n", nfsdstats.rcmisses);
- seq_printf(m, "not cached: %u\n", nfsdstats.rcnocache);
- seq_printf(m, "payload misses: %u\n", nn->payload_misses);
+ seq_printf(m, "mem usage: %lld\n",
+ percpu_counter_sum_positive(&nn->counter[NFSD_NET_DRC_MEM_USAGE]));
+ seq_printf(m, "cache hits: %lld\n",
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_RC_HITS]));
+ seq_printf(m, "cache misses: %lld\n",
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_RC_MISSES]));
+ seq_printf(m, "not cached: %lld\n",
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]));
+ seq_printf(m, "payload misses: %lld\n",
+ percpu_counter_sum_positive(&nn->counter[NFSD_NET_PAYLOAD_MISSES]));
seq_printf(m, "longest chain len: %u\n", nn->longest_chain);
seq_printf(m, "cachesize at longest: %u\n", nn->longest_chain_cachesize);
return 0;
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index f6d5d783f4a4..ef86ed23af82 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -32,6 +32,7 @@
enum {
NFSD_Root = 1,
NFSD_List,
+ NFSD_Export_Stats,
NFSD_Export_features,
NFSD_Fh,
NFSD_FO_UnlockIP,
@@ -1348,6 +1349,8 @@ static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc)
static const struct tree_descr nfsd_files[] = {
[NFSD_List] = {"exports", &exports_nfsd_operations, S_IRUGO},
+ /* Per-export io stats use same ops as exports file */
+ [NFSD_Export_Stats] = {"export_stats", &exports_nfsd_operations, S_IRUGO},
[NFSD_Export_features] = {"export_features",
&export_features_operations, S_IRUGO},
[NFSD_FO_UnlockIP] = {"unlock_ip",
@@ -1522,19 +1525,18 @@ static int __init init_nfsd(void)
int retval;
printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
- retval = register_pernet_subsys(&nfsd_net_ops);
- if (retval < 0)
- return retval;
retval = register_cld_notifier();
if (retval)
- goto out_unregister_pernet;
+ return retval;
retval = nfsd4_init_slabs();
if (retval)
goto out_unregister_notifier;
retval = nfsd4_init_pnfs();
if (retval)
goto out_free_slabs;
- nfsd_stat_init(); /* Statistics */
+ retval = nfsd_stat_init(); /* Statistics */
+ if (retval)
+ goto out_free_pnfs;
retval = nfsd_drc_slab_create();
if (retval)
goto out_free_stat;
@@ -1544,9 +1546,14 @@ static int __init init_nfsd(void)
goto out_free_lockd;
retval = register_filesystem(&nfsd_fs_type);
if (retval)
+ goto out_free_exports;
+ retval = register_pernet_subsys(&nfsd_net_ops);
+ if (retval < 0)
goto out_free_all;
return 0;
out_free_all:
+ unregister_pernet_subsys(&nfsd_net_ops);
+out_free_exports:
remove_proc_entry("fs/nfs/exports", NULL);
remove_proc_entry("fs/nfs", NULL);
out_free_lockd:
@@ -1554,18 +1561,18 @@ out_free_lockd:
nfsd_drc_slab_free();
out_free_stat:
nfsd_stat_shutdown();
+out_free_pnfs:
nfsd4_exit_pnfs();
out_free_slabs:
nfsd4_free_slabs();
out_unregister_notifier:
unregister_cld_notifier();
-out_unregister_pernet:
- unregister_pernet_subsys(&nfsd_net_ops);
return retval;
}
static void __exit exit_nfsd(void)
{
+ unregister_pernet_subsys(&nfsd_net_ops);
nfsd_drc_slab_free();
remove_proc_entry("fs/nfs/exports", NULL);
remove_proc_entry("fs/nfs", NULL);
@@ -1575,7 +1582,6 @@ static void __exit exit_nfsd(void)
nfsd4_exit_pnfs();
unregister_filesystem(&nfsd_fs_type);
unregister_cld_notifier();
- unregister_pernet_subsys(&nfsd_net_ops);
}
MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index d63cf8196fed..8bdc37aa2c2e 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -24,8 +24,8 @@
#include <uapi/linux/nfsd/debug.h>
#include "netns.h"
-#include "stats.h"
#include "export.h"
+#include "stats.h"
#undef ifdebug
#ifdef CONFIG_SUNRPC_DEBUG
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 8d90796e236a..10b44421eace 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -350,7 +350,7 @@ out:
__be32
fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type, int access)
{
- struct svc_export *exp;
+ struct svc_export *exp = NULL;
struct dentry *dentry;
__be32 error;
@@ -423,7 +423,7 @@ skip_pseudoflavor_check:
}
out:
if (error == nfserr_stale)
- nfsdstats.fh_stale++;
+ nfsd_stats_fh_stale_inc(exp);
return error;
}
diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index cb20c2cd3469..f58933519f38 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -12,6 +12,7 @@
#include <linux/sunrpc/svc.h>
#include <uapi/linux/nfsd/nfsfh.h>
#include <linux/iversion.h>
+#include <linux/exportfs.h>
static inline __u32 ino_t_to_u32(ino_t ino)
{
@@ -264,7 +265,9 @@ fh_clear_wcc(struct svc_fh *fhp)
static inline u64 nfsd4_change_attribute(struct kstat *stat,
struct inode *inode)
{
- if (IS_I_VERSION(inode)) {
+ if (inode->i_sb->s_export_op->fetch_iversion)
+ return inode->i_sb->s_export_op->fetch_iversion(inode);
+ else if (IS_I_VERSION(inode)) {
u64 chattr;
chattr = stat->ctime.tv_sec;
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index 0ea0554d20d1..a8d5449dd0e9 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -149,14 +149,15 @@ out:
static __be32
nfsd_proc_readlink(struct svc_rqst *rqstp)
{
- struct nfsd_readlinkargs *argp = rqstp->rq_argp;
+ struct nfsd_fhandle *argp = rqstp->rq_argp;
struct nfsd_readlinkres *resp = rqstp->rq_resp;
+ char *buffer = page_address(*(rqstp->rq_next_page++));
dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh));
/* Read the symlink. */
resp->len = NFS_MAXPATHLEN;
- resp->status = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len);
+ resp->status = nfsd_readlink(rqstp, &argp->fh, buffer, &resp->len);
fh_put(&argp->fh);
return rpc_success;
@@ -171,32 +172,36 @@ nfsd_proc_read(struct svc_rqst *rqstp)
{
struct nfsd_readargs *argp = rqstp->rq_argp;
struct nfsd_readres *resp = rqstp->rq_resp;
+ unsigned int len;
u32 eof;
+ int v;
dprintk("nfsd: READ %s %d bytes at %d\n",
SVCFH_fmt(&argp->fh),
argp->count, argp->offset);
+ argp->count = min_t(u32, argp->count, NFSSVC_MAXBLKSIZE_V2);
+
+ v = 0;
+ len = argp->count;
+ while (len > 0) {
+ struct page *page = *(rqstp->rq_next_page++);
+
+ rqstp->rq_vec[v].iov_base = page_address(page);
+ rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
+ len -= rqstp->rq_vec[v].iov_len;
+ v++;
+ }
+
/* Obtain buffer pointer for payload. 19 is 1 word for
* status, 17 words for fattr, and 1 word for the byte count.
*/
-
- if (NFSSVC_MAXBLKSIZE_V2 < argp->count) {
- char buf[RPC_MAX_ADDRBUFLEN];
- printk(KERN_NOTICE
- "oversized read request from %s (%d bytes)\n",
- svc_print_addr(rqstp, buf, sizeof(buf)),
- argp->count);
- argp->count = NFSSVC_MAXBLKSIZE_V2;
- }
svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
resp->count = argp->count;
- resp->status = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh),
- argp->offset,
- rqstp->rq_vec, argp->vlen,
- &resp->count,
- &eof);
+ fh_copy(&resp->fh, &argp->fh);
+ resp->status = nfsd_read(rqstp, &resp->fh, argp->offset,
+ rqstp->rq_vec, v, &resp->count, &eof);
if (resp->status == nfs_ok)
resp->status = fh_getattr(&resp->fh, &resp->stat);
else if (resp->status == nfserr_jukebox)
@@ -548,6 +553,20 @@ nfsd_proc_rmdir(struct svc_rqst *rqstp)
return rpc_success;
}
+static void nfsd_init_dirlist_pages(struct svc_rqst *rqstp,
+ struct nfsd_readdirres *resp,
+ int count)
+{
+ count = min_t(u32, count, PAGE_SIZE);
+
+ /* Convert byte count to number of words (i.e. >> 2),
+ * and reserve room for the NULL ptr & eof flag (-2 words) */
+ resp->buflen = (count >> 2) - 2;
+
+ resp->buffer = page_address(*rqstp->rq_next_page);
+ rqstp->rq_next_page++;
+}
+
/*
* Read a portion of a directory.
*/
@@ -556,31 +575,24 @@ nfsd_proc_readdir(struct svc_rqst *rqstp)
{
struct nfsd_readdirargs *argp = rqstp->rq_argp;
struct nfsd_readdirres *resp = rqstp->rq_resp;
- int count;
loff_t offset;
+ __be32 *buffer;
dprintk("nfsd: READDIR %s %d bytes at %d\n",
SVCFH_fmt(&argp->fh),
argp->count, argp->cookie);
- /* Shrink to the client read size */
- count = (argp->count >> 2) - 2;
-
- /* Make sure we've room for the NULL ptr & eof flag */
- count -= 2;
- if (count < 0)
- count = 0;
+ nfsd_init_dirlist_pages(rqstp, resp, argp->count);
+ buffer = resp->buffer;
- resp->buffer = argp->buffer;
resp->offset = NULL;
- resp->buflen = count;
resp->common.err = nfs_ok;
/* Read directory and encode entries on the fly */
offset = argp->cookie;
resp->status = nfsd_readdir(rqstp, &argp->fh, &offset,
&resp->common, nfssvc_encode_entry);
- resp->count = resp->buffer - argp->buffer;
+ resp->count = resp->buffer - buffer;
if (resp->offset)
*resp->offset = htonl(offset);
@@ -623,16 +635,18 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = 0,
+ .pc_name = "NULL",
},
[NFSPROC_GETATTR] = {
.pc_func = nfsd_proc_getattr,
- .pc_decode = nfssvc_decode_fhandle,
+ .pc_decode = nfssvc_decode_fhandleargs,
.pc_encode = nfssvc_encode_attrstat,
.pc_release = nfssvc_release_attrstat,
.pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT,
+ .pc_name = "GETATTR",
},
[NFSPROC_SETATTR] = {
.pc_func = nfsd_proc_setattr,
@@ -643,6 +657,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+AT,
+ .pc_name = "SETATTR",
},
[NFSPROC_ROOT] = {
.pc_func = nfsd_proc_root,
@@ -652,6 +667,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = 0,
+ .pc_name = "ROOT",
},
[NFSPROC_LOOKUP] = {
.pc_func = nfsd_proc_lookup,
@@ -662,15 +678,17 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_diropres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+FH+AT,
+ .pc_name = "LOOKUP",
},
[NFSPROC_READLINK] = {
.pc_func = nfsd_proc_readlink,
- .pc_decode = nfssvc_decode_readlinkargs,
+ .pc_decode = nfssvc_decode_fhandleargs,
.pc_encode = nfssvc_encode_readlinkres,
- .pc_argsize = sizeof(struct nfsd_readlinkargs),
+ .pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd_readlinkres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
+ .pc_name = "READLINK",
},
[NFSPROC_READ] = {
.pc_func = nfsd_proc_read,
@@ -681,6 +699,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_readres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
+ .pc_name = "READ",
},
[NFSPROC_WRITECACHE] = {
.pc_func = nfsd_proc_writecache,
@@ -690,6 +709,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = 0,
+ .pc_name = "WRITECACHE",
},
[NFSPROC_WRITE] = {
.pc_func = nfsd_proc_write,
@@ -700,6 +720,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+AT,
+ .pc_name = "WRITE",
},
[NFSPROC_CREATE] = {
.pc_func = nfsd_proc_create,
@@ -710,6 +731,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_diropres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+FH+AT,
+ .pc_name = "CREATE",
},
[NFSPROC_REMOVE] = {
.pc_func = nfsd_proc_remove,
@@ -719,6 +741,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "REMOVE",
},
[NFSPROC_RENAME] = {
.pc_func = nfsd_proc_rename,
@@ -728,6 +751,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "RENAME",
},
[NFSPROC_LINK] = {
.pc_func = nfsd_proc_link,
@@ -737,6 +761,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "LINK",
},
[NFSPROC_SYMLINK] = {
.pc_func = nfsd_proc_symlink,
@@ -746,6 +771,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "SYMLINK",
},
[NFSPROC_MKDIR] = {
.pc_func = nfsd_proc_mkdir,
@@ -756,6 +782,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_diropres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+FH+AT,
+ .pc_name = "MKDIR",
},
[NFSPROC_RMDIR] = {
.pc_func = nfsd_proc_rmdir,
@@ -765,6 +792,7 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_ressize = sizeof(struct nfsd_stat),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
+ .pc_name = "RMDIR",
},
[NFSPROC_READDIR] = {
.pc_func = nfsd_proc_readdir,
@@ -773,15 +801,17 @@ static const struct svc_procedure nfsd_procedures2[18] = {
.pc_argsize = sizeof(struct nfsd_readdirargs),
.pc_ressize = sizeof(struct nfsd_readdirres),
.pc_cachetype = RC_NOCACHE,
+ .pc_name = "READDIR",
},
[NFSPROC_STATFS] = {
.pc_func = nfsd_proc_statfs,
- .pc_decode = nfssvc_decode_fhandle,
+ .pc_decode = nfssvc_decode_fhandleargs,
.pc_encode = nfssvc_encode_statfsres,
.pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd_statfsres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+5,
+ .pc_name = "STATFS",
},
};
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index f9c9f4c63cc7..6de406322106 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -955,37 +955,6 @@ out:
return 0;
}
-/*
- * A write procedure can have a large argument, and a read procedure can
- * have a large reply, but no NFSv2 or NFSv3 procedure has argument and
- * reply that can both be larger than a page. The xdr code has taken
- * advantage of this assumption to be a sloppy about bounds checking in
- * some cases. Pending a rewrite of the NFSv2/v3 xdr code to fix that
- * problem, we enforce these assumptions here:
- */
-static bool nfs_request_too_big(struct svc_rqst *rqstp,
- const struct svc_procedure *proc)
-{
- /*
- * The ACL code has more careful bounds-checking and is not
- * susceptible to this problem:
- */
- if (rqstp->rq_prog != NFS_PROGRAM)
- return false;
- /*
- * Ditto NFSv4 (which can in theory have argument and reply both
- * more than a page):
- */
- if (rqstp->rq_vers >= 4)
- return false;
- /* The reply will be small, we're OK: */
- if (proc->pc_xdrressize > 0 &&
- proc->pc_xdrressize < XDR_QUADLEN(PAGE_SIZE))
- return false;
-
- return rqstp->rq_arg.len > PAGE_SIZE;
-}
-
/**
* nfsd_dispatch - Process an NFS or NFSACL Request
* @rqstp: incoming request
@@ -1004,9 +973,6 @@ int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
struct kvec *resv = &rqstp->rq_res.head[0];
__be32 *p;
- if (nfs_request_too_big(rqstp, proc))
- goto out_decode_err;
-
/*
* Give the xdr decoder a chance to change this if it wants
* (necessary in the NFSv4.0 compound case)
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index 7aa6e8aca2c1..5d79ef6a0c7f 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -23,24 +23,31 @@ static u32 nfs_ftypes[] = {
/*
- * XDR functions for basic NFS types
+ * Basic NFSv2 data types (RFC 1094 Section 2.3)
*/
-static __be32 *
-decode_fh(__be32 *p, struct svc_fh *fhp)
+
+/**
+ * svcxdr_decode_fhandle - Decode an NFSv2 file handle
+ * @xdr: XDR stream positioned at an encoded NFSv2 FH
+ * @fhp: OUT: filled-in server file handle
+ *
+ * Return values:
+ * %false: The encoded file handle was not valid
+ * %true: @fhp has been initialized
+ */
+bool
+svcxdr_decode_fhandle(struct xdr_stream *xdr, struct svc_fh *fhp)
{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS_FHSIZE);
+ if (!p)
+ return false;
fh_init(fhp, NFS_FHSIZE);
memcpy(&fhp->fh_handle.fh_base, p, NFS_FHSIZE);
fhp->fh_handle.fh_size = NFS_FHSIZE;
- /* FIXME: Look up export pointer here and verify
- * Sun Secure RPC if requested */
- return p + (NFS_FHSIZE >> 2);
-}
-
-/* Helper function for NFSv2 ACL code */
-__be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp)
-{
- return decode_fh(p, fhp);
+ return true;
}
static __be32 *
@@ -50,66 +57,95 @@ encode_fh(__be32 *p, struct svc_fh *fhp)
return p + (NFS_FHSIZE>> 2);
}
-/*
- * Decode a file name and make sure that the path contains
- * no slashes or null bytes.
- */
-static __be32 *
-decode_filename(__be32 *p, char **namp, unsigned int *lenp)
+static bool
+svcxdr_decode_filename(struct xdr_stream *xdr, char **name, unsigned int *len)
{
- char *name;
- unsigned int i;
-
- if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS_MAXNAMLEN)) != NULL) {
- for (i = 0, name = *namp; i < *lenp; i++, name++) {
- if (*name == '\0' || *name == '/')
- return NULL;
- }
- }
+ u32 size, i;
+ __be32 *p;
+ char *c;
+
+ if (xdr_stream_decode_u32(xdr, &size) < 0)
+ return false;
+ if (size == 0 || size > NFS_MAXNAMLEN)
+ return false;
+ p = xdr_inline_decode(xdr, size);
+ if (!p)
+ return false;
- return p;
+ *len = size;
+ *name = (char *)p;
+ for (i = 0, c = *name; i < size; i++, c++)
+ if (*c == '\0' || *c == '/')
+ return false;
+
+ return true;
}
-static __be32 *
-decode_sattr(__be32 *p, struct iattr *iap, struct user_namespace *userns)
+static bool
+svcxdr_decode_diropargs(struct xdr_stream *xdr, struct svc_fh *fhp,
+ char **name, unsigned int *len)
{
- u32 tmp, tmp1;
+ return svcxdr_decode_fhandle(xdr, fhp) &&
+ svcxdr_decode_filename(xdr, name, len);
+}
+
+static bool
+svcxdr_decode_sattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
+ struct iattr *iap)
+{
+ u32 tmp1, tmp2;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, XDR_UNIT * 8);
+ if (!p)
+ return false;
iap->ia_valid = 0;
- /* Sun client bug compatibility check: some sun clients seem to
- * put 0xffff in the mode field when they mean 0xffffffff.
- * Quoting the 4.4BSD nfs server code: Nah nah nah nah na nah.
+ /*
+ * Some Sun clients put 0xffff in the mode field when they
+ * mean 0xffffffff.
*/
- if ((tmp = ntohl(*p++)) != (u32)-1 && tmp != 0xffff) {
+ tmp1 = be32_to_cpup(p++);
+ if (tmp1 != (u32)-1 && tmp1 != 0xffff) {
iap->ia_valid |= ATTR_MODE;
- iap->ia_mode = tmp;
+ iap->ia_mode = tmp1;
}
- if ((tmp = ntohl(*p++)) != (u32)-1) {
- iap->ia_uid = make_kuid(userns, tmp);
+
+ tmp1 = be32_to_cpup(p++);
+ if (tmp1 != (u32)-1) {
+ iap->ia_uid = make_kuid(nfsd_user_namespace(rqstp), tmp1);
if (uid_valid(iap->ia_uid))
iap->ia_valid |= ATTR_UID;
}
- if ((tmp = ntohl(*p++)) != (u32)-1) {
- iap->ia_gid = make_kgid(userns, tmp);
+
+ tmp1 = be32_to_cpup(p++);
+ if (tmp1 != (u32)-1) {
+ iap->ia_gid = make_kgid(nfsd_user_namespace(rqstp), tmp1);
if (gid_valid(iap->ia_gid))
iap->ia_valid |= ATTR_GID;
}
- if ((tmp = ntohl(*p++)) != (u32)-1) {
+
+ tmp1 = be32_to_cpup(p++);
+ if (tmp1 != (u32)-1) {
iap->ia_valid |= ATTR_SIZE;
- iap->ia_size = tmp;
+ iap->ia_size = tmp1;
}
- tmp = ntohl(*p++); tmp1 = ntohl(*p++);
- if (tmp != (u32)-1 && tmp1 != (u32)-1) {
+
+ tmp1 = be32_to_cpup(p++);
+ tmp2 = be32_to_cpup(p++);
+ if (tmp1 != (u32)-1 && tmp2 != (u32)-1) {
iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET;
- iap->ia_atime.tv_sec = tmp;
- iap->ia_atime.tv_nsec = tmp1 * 1000;
+ iap->ia_atime.tv_sec = tmp1;
+ iap->ia_atime.tv_nsec = tmp2 * NSEC_PER_USEC;
}
- tmp = ntohl(*p++); tmp1 = ntohl(*p++);
- if (tmp != (u32)-1 && tmp1 != (u32)-1) {
+
+ tmp1 = be32_to_cpup(p++);
+ tmp2 = be32_to_cpup(p++);
+ if (tmp1 != (u32)-1 && tmp2 != (u32)-1) {
iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET;
- iap->ia_mtime.tv_sec = tmp;
- iap->ia_mtime.tv_nsec = tmp1 * 1000;
+ iap->ia_mtime.tv_sec = tmp1;
+ iap->ia_mtime.tv_nsec = tmp2 * NSEC_PER_USEC;
/*
* Passing the invalid value useconds=1000000 for mtime
* is a Sun convention for "set both mtime and atime to
@@ -119,10 +155,11 @@ decode_sattr(__be32 *p, struct iattr *iap, struct user_namespace *userns)
* sattr in section 6.1 of "NFS Illustrated" by
* Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5
*/
- if (tmp1 == 1000000)
+ if (tmp2 == 1000000)
iap->ia_valid &= ~(ATTR_ATIME_SET|ATTR_MTIME_SET);
}
- return p;
+
+ return true;
}
static __be32 *
@@ -194,225 +231,158 @@ __be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *f
*/
int
-nfssvc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_fhandle *args = rqstp->rq_argp;
- p = decode_fh(p, &args->fh);
- if (!p)
- return 0;
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_fhandle(xdr, &args->fh);
}
int
nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_sattrargs *args = rqstp->rq_argp;
- p = decode_fh(p, &args->fh);
- if (!p)
- return 0;
- p = decode_sattr(p, &args->attrs, nfsd_user_namespace(rqstp));
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_fhandle(xdr, &args->fh) &&
+ svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
}
int
nfssvc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_diropargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->fh))
- || !(p = decode_filename(p, &args->name, &args->len)))
- return 0;
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_diropargs(xdr, &args->fh, &args->name, &args->len);
}
int
nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_readargs *args = rqstp->rq_argp;
- unsigned int len;
- int v;
- p = decode_fh(p, &args->fh);
- if (!p)
- return 0;
-
- args->offset = ntohl(*p++);
- len = args->count = ntohl(*p++);
- p++; /* totalcount - unused */
+ u32 totalcount;
- len = min_t(unsigned int, len, NFSSVC_MAXBLKSIZE_V2);
+ if (!svcxdr_decode_fhandle(xdr, &args->fh))
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->offset) < 0)
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->count) < 0)
+ return 0;
+ /* totalcount is ignored */
+ if (xdr_stream_decode_u32(xdr, &totalcount) < 0)
+ return 0;
- /* set up somewhere to store response.
- * We take pages, put them on reslist and include in iovec
- */
- v=0;
- while (len > 0) {
- struct page *p = *(rqstp->rq_next_page++);
-
- rqstp->rq_vec[v].iov_base = page_address(p);
- rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
- len -= rqstp->rq_vec[v].iov_len;
- v++;
- }
- args->vlen = v;
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
int
nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_writeargs *args = rqstp->rq_argp;
- unsigned int len, hdr, dlen;
struct kvec *head = rqstp->rq_arg.head;
+ struct kvec *tail = rqstp->rq_arg.tail;
+ u32 beginoffset, totalcount;
+ size_t remaining;
- p = decode_fh(p, &args->fh);
- if (!p)
+ if (!svcxdr_decode_fhandle(xdr, &args->fh))
return 0;
-
- p++; /* beginoffset */
- args->offset = ntohl(*p++); /* offset */
- p++; /* totalcount */
- len = args->len = ntohl(*p++);
- /*
- * The protocol specifies a maximum of 8192 bytes.
- */
- if (len > NFSSVC_MAXBLKSIZE_V2)
+ /* beginoffset is ignored */
+ if (xdr_stream_decode_u32(xdr, &beginoffset) < 0)
return 0;
-
- /*
- * Check to make sure that we got the right number of
- * bytes.
- */
- hdr = (void*)p - head->iov_base;
- if (hdr > head->iov_len)
+ if (xdr_stream_decode_u32(xdr, &args->offset) < 0)
+ return 0;
+ /* totalcount is ignored */
+ if (xdr_stream_decode_u32(xdr, &totalcount) < 0)
return 0;
- dlen = head->iov_len + rqstp->rq_arg.page_len - hdr;
- /*
- * Round the length of the data which was specified up to
- * the next multiple of XDR units and then compare that
- * against the length which was actually received.
- * Note that when RPCSEC/GSS (for example) is used, the
- * data buffer can be padded so dlen might be larger
- * than required. It must never be smaller.
- */
- if (dlen < XDR_QUADLEN(len)*4)
+ /* opaque data */
+ if (xdr_stream_decode_u32(xdr, &args->len) < 0)
return 0;
+ if (args->len > NFSSVC_MAXBLKSIZE_V2)
+ return 0;
+ remaining = head->iov_len + rqstp->rq_arg.page_len + tail->iov_len;
+ remaining -= xdr_stream_pos(xdr);
+ if (remaining < xdr_align_size(args->len))
+ return 0;
+ args->first.iov_base = xdr->p;
+ args->first.iov_len = head->iov_len - xdr_stream_pos(xdr);
- args->first.iov_base = (void *)p;
- args->first.iov_len = head->iov_len - hdr;
return 1;
}
int
nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_createargs *args = rqstp->rq_argp;
- if ( !(p = decode_fh(p, &args->fh))
- || !(p = decode_filename(p, &args->name, &args->len)))
- return 0;
- p = decode_sattr(p, &args->attrs, nfsd_user_namespace(rqstp));
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_diropargs(xdr, &args->fh,
+ &args->name, &args->len) &&
+ svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
}
int
nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_renameargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->ffh))
- || !(p = decode_filename(p, &args->fname, &args->flen))
- || !(p = decode_fh(p, &args->tfh))
- || !(p = decode_filename(p, &args->tname, &args->tlen)))
- return 0;
-
- return xdr_argsize_check(rqstp, p);
-}
-
-int
-nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p)
-{
- struct nfsd_readlinkargs *args = rqstp->rq_argp;
-
- p = decode_fh(p, &args->fh);
- if (!p)
- return 0;
- args->buffer = page_address(*(rqstp->rq_next_page++));
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_diropargs(xdr, &args->ffh,
+ &args->fname, &args->flen) &&
+ svcxdr_decode_diropargs(xdr, &args->tfh,
+ &args->tname, &args->tlen);
}
int
nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_linkargs *args = rqstp->rq_argp;
- if (!(p = decode_fh(p, &args->ffh))
- || !(p = decode_fh(p, &args->tfh))
- || !(p = decode_filename(p, &args->tname, &args->tlen)))
- return 0;
-
- return xdr_argsize_check(rqstp, p);
+ return svcxdr_decode_fhandle(xdr, &args->ffh) &&
+ svcxdr_decode_diropargs(xdr, &args->tfh,
+ &args->tname, &args->tlen);
}
int
nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_symlinkargs *args = rqstp->rq_argp;
- char *base = (char *)p;
- size_t xdrlen;
+ struct kvec *head = rqstp->rq_arg.head;
- if ( !(p = decode_fh(p, &args->ffh))
- || !(p = decode_filename(p, &args->fname, &args->flen)))
+ if (!svcxdr_decode_diropargs(xdr, &args->ffh, &args->fname, &args->flen))
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->tlen) < 0)
return 0;
-
- args->tlen = ntohl(*p++);
if (args->tlen == 0)
return 0;
- args->first.iov_base = p;
- args->first.iov_len = rqstp->rq_arg.head[0].iov_len;
- args->first.iov_len -= (char *)p - base;
-
- /* This request is never larger than a page. Therefore,
- * transport will deliver either:
- * 1. pathname in the pagelist -> sattr is in the tail.
- * 2. everything in the head buffer -> sattr is in the head.
- */
- if (rqstp->rq_arg.page_len) {
- if (args->tlen != rqstp->rq_arg.page_len)
- return 0;
- p = rqstp->rq_arg.tail[0].iov_base;
- } else {
- xdrlen = XDR_QUADLEN(args->tlen);
- if (xdrlen > args->first.iov_len - (8 * sizeof(__be32)))
- return 0;
- p += xdrlen;
- }
- decode_sattr(p, &args->attrs, nfsd_user_namespace(rqstp));
-
- return 1;
+ args->first.iov_len = head->iov_len - xdr_stream_pos(xdr);
+ args->first.iov_base = xdr_inline_decode(xdr, args->tlen);
+ if (!args->first.iov_base)
+ return 0;
+ return svcxdr_decode_sattr(rqstp, xdr, &args->attrs);
}
int
nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_arg_stream;
struct nfsd_readdirargs *args = rqstp->rq_argp;
- p = decode_fh(p, &args->fh);
- if (!p)
+ if (!svcxdr_decode_fhandle(xdr, &args->fh))
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->cookie) < 0)
+ return 0;
+ if (xdr_stream_decode_u32(xdr, &args->count) < 0)
return 0;
- args->cookie = ntohl(*p++);
- args->count = ntohl(*p++);
- args->count = min_t(u32, args->count, PAGE_SIZE);
- args->buffer = page_address(*(rqstp->rq_next_page++));
- return xdr_argsize_check(rqstp, p);
+ return 1;
}
/*
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 9eae11a9d21c..73deea353169 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -649,8 +649,7 @@ void nfs4_remove_reclaim_record(struct nfs4_client_reclaim *, struct nfsd_net *)
extern void nfs4_release_reclaim(struct nfsd_net *);
extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(struct xdr_netobj name,
struct nfsd_net *nn);
-extern __be32 nfs4_check_open_reclaim(clientid_t *clid,
- struct nfsd4_compound_state *cstate, struct nfsd_net *nn);
+extern __be32 nfs4_check_open_reclaim(struct nfs4_client *);
extern void nfsd4_probe_callback(struct nfs4_client *clp);
extern void nfsd4_probe_callback_sync(struct nfs4_client *clp);
extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *);
diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c
index b1bc582b0493..1d3b881e7382 100644
--- a/fs/nfsd/stats.c
+++ b/fs/nfsd/stats.c
@@ -7,16 +7,14 @@
* Format:
* rc <hits> <misses> <nocache>
* Statistsics for the reply cache
- * fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache>
+ * fh <stale> <deprecated filehandle cache stats>
* statistics for filehandle lookup
* io <bytes-read> <bytes-written>
* statistics for IO throughput
- * th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%>
- * time (seconds) when nfsd thread usage above thresholds
- * and number of times that all threads were in use
- * ra cache-size <10% <20% <30% ... <100% not-found
- * number of times that read-ahead entry was found that deep in
- * the cache.
+ * th <threads> <deprecated thread usage histogram stats>
+ * number of threads
+ * ra <deprecated ra-cache stats>
+ *
* plus generic RPC stats (see net/sunrpc/stats.c)
*
* Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
@@ -38,31 +36,24 @@ static int nfsd_proc_show(struct seq_file *seq, void *v)
{
int i;
- seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n",
- nfsdstats.rchits,
- nfsdstats.rcmisses,
- nfsdstats.rcnocache,
- nfsdstats.fh_stale,
- nfsdstats.fh_lookup,
- nfsdstats.fh_anon,
- nfsdstats.fh_nocache_dir,
- nfsdstats.fh_nocache_nondir,
- nfsdstats.io_read,
- nfsdstats.io_write);
+ seq_printf(seq, "rc %lld %lld %lld\nfh %lld 0 0 0 0\nio %lld %lld\n",
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_RC_HITS]),
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_RC_MISSES]),
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]),
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_FH_STALE]),
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_IO_READ]),
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_IO_WRITE]));
+
/* thread usage: */
- seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt);
- for (i=0; i<10; i++) {
- unsigned int jifs = nfsdstats.th_usage[i];
- unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ;
- seq_printf(seq, " %u.%03u", sec, msec);
- }
+ seq_printf(seq, "th %u 0", nfsdstats.th_cnt);
+
+ /* deprecated thread usage histogram stats */
+ for (i = 0; i < 10; i++)
+ seq_puts(seq, " 0.000");
+
+ /* deprecated ra-cache stats */
+ seq_puts(seq, "\nra 0 0 0 0 0 0 0 0 0 0 0 0\n");
- /* newline and ra-cache */
- seq_printf(seq, "\nra %u", nfsdstats.ra_size);
- for (i=0; i<11; i++)
- seq_printf(seq, " %u", nfsdstats.ra_depth[i]);
- seq_putc(seq, '\n');
-
/* show my rpc info */
svc_seq_show(seq, &nfsd_svcstats);
@@ -70,8 +61,10 @@ static int nfsd_proc_show(struct seq_file *seq, void *v)
/* Show count for individual nfsv4 operations */
/* Writing operation numbers 0 1 2 also for maintaining uniformity */
seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1);
- for (i = 0; i <= LAST_NFS4_OP; i++)
- seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]);
+ for (i = 0; i <= LAST_NFS4_OP; i++) {
+ seq_printf(seq, " %lld",
+ percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_NFS4_OP(i)]));
+ }
seq_putc(seq, '\n');
#endif
@@ -91,14 +84,63 @@ static const struct proc_ops nfsd_proc_ops = {
.proc_release = single_release,
};
-void
-nfsd_stat_init(void)
+int nfsd_percpu_counters_init(struct percpu_counter counters[], int num)
+{
+ int i, err = 0;
+
+ for (i = 0; !err && i < num; i++)
+ err = percpu_counter_init(&counters[i], 0, GFP_KERNEL);
+
+ if (!err)
+ return 0;
+
+ for (; i > 0; i--)
+ percpu_counter_destroy(&counters[i-1]);
+
+ return err;
+}
+
+void nfsd_percpu_counters_reset(struct percpu_counter counters[], int num)
+{
+ int i;
+
+ for (i = 0; i < num; i++)
+ percpu_counter_set(&counters[i], 0);
+}
+
+void nfsd_percpu_counters_destroy(struct percpu_counter counters[], int num)
{
+ int i;
+
+ for (i = 0; i < num; i++)
+ percpu_counter_destroy(&counters[i]);
+}
+
+static int nfsd_stat_counters_init(void)
+{
+ return nfsd_percpu_counters_init(nfsdstats.counter, NFSD_STATS_COUNTERS_NUM);
+}
+
+static void nfsd_stat_counters_destroy(void)
+{
+ nfsd_percpu_counters_destroy(nfsdstats.counter, NFSD_STATS_COUNTERS_NUM);
+}
+
+int nfsd_stat_init(void)
+{
+ int err;
+
+ err = nfsd_stat_counters_init();
+ if (err)
+ return err;
+
svc_proc_register(&init_net, &nfsd_svcstats, &nfsd_proc_ops);
+
+ return 0;
}
-void
-nfsd_stat_shutdown(void)
+void nfsd_stat_shutdown(void)
{
+ nfsd_stat_counters_destroy();
svc_proc_unregister(&init_net, "nfsd");
}
diff --git a/fs/nfsd/stats.h b/fs/nfsd/stats.h
index b23fdac69820..51ecda852e23 100644
--- a/fs/nfsd/stats.h
+++ b/fs/nfsd/stats.h
@@ -8,37 +8,91 @@
#define _NFSD_STATS_H
#include <uapi/linux/nfsd/stats.h>
+#include <linux/percpu_counter.h>
-struct nfsd_stats {
- unsigned int rchits; /* repcache hits */
- unsigned int rcmisses; /* repcache hits */
- unsigned int rcnocache; /* uncached reqs */
- unsigned int fh_stale; /* FH stale error */
- unsigned int fh_lookup; /* dentry cached */
- unsigned int fh_anon; /* anon file dentry returned */
- unsigned int fh_nocache_dir; /* filehandle not found in dcache */
- unsigned int fh_nocache_nondir; /* filehandle not found in dcache */
- unsigned int io_read; /* bytes returned to read requests */
- unsigned int io_write; /* bytes passed in write requests */
- unsigned int th_cnt; /* number of available threads */
- unsigned int th_usage[10]; /* number of ticks during which n perdeciles
- * of available threads were in use */
- unsigned int th_fullcnt; /* number of times last free thread was used */
- unsigned int ra_size; /* size of ra cache */
- unsigned int ra_depth[11]; /* number of times ra entry was found that deep
- * in the cache (10percentiles). [10] = not found */
+enum {
+ NFSD_STATS_RC_HITS, /* repcache hits */
+ NFSD_STATS_RC_MISSES, /* repcache misses */
+ NFSD_STATS_RC_NOCACHE, /* uncached reqs */
+ NFSD_STATS_FH_STALE, /* FH stale error */
+ NFSD_STATS_IO_READ, /* bytes returned to read requests */
+ NFSD_STATS_IO_WRITE, /* bytes passed in write requests */
#ifdef CONFIG_NFSD_V4
- unsigned int nfs4_opcount[LAST_NFS4_OP + 1]; /* count of individual nfsv4 operations */
+ NFSD_STATS_FIRST_NFS4_OP, /* count of individual nfsv4 operations */
+ NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP,
+#define NFSD_STATS_NFS4_OP(op) (NFSD_STATS_FIRST_NFS4_OP + (op))
#endif
+ NFSD_STATS_COUNTERS_NUM
+};
+
+struct nfsd_stats {
+ struct percpu_counter counter[NFSD_STATS_COUNTERS_NUM];
+ /* Protected by nfsd_mutex */
+ unsigned int th_cnt; /* number of available threads */
};
extern struct nfsd_stats nfsdstats;
+
extern struct svc_stat nfsd_svcstats;
-void nfsd_stat_init(void);
-void nfsd_stat_shutdown(void);
+int nfsd_percpu_counters_init(struct percpu_counter counters[], int num);
+void nfsd_percpu_counters_reset(struct percpu_counter counters[], int num);
+void nfsd_percpu_counters_destroy(struct percpu_counter counters[], int num);
+int nfsd_stat_init(void);
+void nfsd_stat_shutdown(void);
+
+static inline void nfsd_stats_rc_hits_inc(void)
+{
+ percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_HITS]);
+}
+
+static inline void nfsd_stats_rc_misses_inc(void)
+{
+ percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_MISSES]);
+}
+
+static inline void nfsd_stats_rc_nocache_inc(void)
+{
+ percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]);
+}
+
+static inline void nfsd_stats_fh_stale_inc(struct svc_export *exp)
+{
+ percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_FH_STALE]);
+ if (exp)
+ percpu_counter_inc(&exp->ex_stats.counter[EXP_STATS_FH_STALE]);
+}
+
+static inline void nfsd_stats_io_read_add(struct svc_export *exp, s64 amount)
+{
+ percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_READ], amount);
+ if (exp)
+ percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_READ], amount);
+}
+
+static inline void nfsd_stats_io_write_add(struct svc_export *exp, s64 amount)
+{
+ percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_WRITE], amount);
+ if (exp)
+ percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_WRITE], amount);
+}
+
+static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn)
+{
+ percpu_counter_inc(&nn->counter[NFSD_NET_PAYLOAD_MISSES]);
+}
+
+static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount)
+{
+ percpu_counter_add(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
+}
+
+static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount)
+{
+ percpu_counter_sub(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
+}
#endif /* _NFSD_STATS_H */
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index fab873178140..fd6be35a1642 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -890,7 +890,7 @@ static __be32 nfsd_finish_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
unsigned long *count, u32 *eof, ssize_t host_err)
{
if (host_err >= 0) {
- nfsdstats.io_read += host_err;
+ nfsd_stats_io_read_add(fhp->fh_export, host_err);
*eof = nfsd_eof_on_read(file, offset, host_err, *count);
*count = host_err;
fsnotify_access(file);
@@ -1041,7 +1041,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfsd_file *nf,
goto out_nfserr;
}
*cnt = host_err;
- nfsdstats.io_write += *cnt;
+ nfsd_stats_io_write_add(exp, *cnt);
fsnotify_modify(file);
if (stable && use_wgather) {
diff --git a/fs/nfsd/xdr.h b/fs/nfsd/xdr.h
index ad77387734cc..3018b52b6d5e 100644
--- a/fs/nfsd/xdr.h
+++ b/fs/nfsd/xdr.h
@@ -27,7 +27,6 @@ struct nfsd_readargs {
struct svc_fh fh;
__u32 offset;
__u32 count;
- int vlen;
};
struct nfsd_writeargs {
@@ -53,11 +52,6 @@ struct nfsd_renameargs {
unsigned int tlen;
};
-struct nfsd_readlinkargs {
- struct svc_fh fh;
- char * buffer;
-};
-
struct nfsd_linkargs {
struct svc_fh ffh;
struct svc_fh tfh;
@@ -79,7 +73,6 @@ struct nfsd_readdirargs {
struct svc_fh fh;
__u32 cookie;
__u32 count;
- __be32 * buffer;
};
struct nfsd_stat {
@@ -144,14 +137,13 @@ union nfsd_xdrstore {
#define NFS2_SVC_XDRSIZE sizeof(union nfsd_xdrstore)
-int nfssvc_decode_fhandle(struct svc_rqst *, __be32 *);
+int nfssvc_decode_fhandleargs(struct svc_rqst *, __be32 *);
int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *);
int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *);
int nfssvc_decode_readargs(struct svc_rqst *, __be32 *);
int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *);
int nfssvc_decode_createargs(struct svc_rqst *, __be32 *);
int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *);
-int nfssvc_decode_readlinkargs(struct svc_rqst *, __be32 *);
int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *);
int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *);
int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *);
@@ -172,6 +164,6 @@ void nfssvc_release_readres(struct svc_rqst *rqstp);
/* Helper functions for NFSv2 ACL code */
__be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, struct kstat *stat);
-__be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp);
+bool svcxdr_decode_fhandle(struct xdr_stream *xdr, struct svc_fh *fhp);
#endif /* LINUX_NFSD_H */
diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h
index 456fcd7a1038..3e1578953f54 100644
--- a/fs/nfsd/xdr3.h
+++ b/fs/nfsd/xdr3.h
@@ -25,14 +25,13 @@ struct nfsd3_diropargs {
struct nfsd3_accessargs {
struct svc_fh fh;
- unsigned int access;
+ __u32 access;
};
struct nfsd3_readargs {
struct svc_fh fh;
__u64 offset;
__u32 count;
- int vlen;
};
struct nfsd3_writeargs {
@@ -71,11 +70,6 @@ struct nfsd3_renameargs {
unsigned int tlen;
};
-struct nfsd3_readlinkargs {
- struct svc_fh fh;
- char * buffer;
-};
-
struct nfsd3_linkargs {
struct svc_fh ffh;
struct svc_fh tfh;
@@ -96,10 +90,8 @@ struct nfsd3_symlinkargs {
struct nfsd3_readdirargs {
struct svc_fh fh;
__u64 cookie;
- __u32 dircount;
__u32 count;
__be32 * verf;
- __be32 * buffer;
};
struct nfsd3_commitargs {
@@ -110,13 +102,13 @@ struct nfsd3_commitargs {
struct nfsd3_getaclargs {
struct svc_fh fh;
- int mask;
+ __u32 mask;
};
struct posix_acl;
struct nfsd3_setaclargs {
struct svc_fh fh;
- int mask;
+ __u32 mask;
struct posix_acl *acl_access;
struct posix_acl *acl_default;
};
@@ -273,7 +265,7 @@ union nfsd3_xdrstore {
#define NFS3_SVC_XDRSIZE sizeof(union nfsd3_xdrstore)
-int nfs3svc_decode_fhandle(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_fhandleargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_sattrargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_diropargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_accessargs(struct svc_rqst *, __be32 *);
@@ -283,7 +275,6 @@ int nfs3svc_decode_createargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_mkdirargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_mknodargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_renameargs(struct svc_rqst *, __be32 *);
-int nfs3svc_decode_readlinkargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_linkargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_symlinkargs(struct svc_rqst *, __be32 *);
int nfs3svc_decode_readdirargs(struct svc_rqst *, __be32 *);
@@ -316,7 +307,6 @@ int nfs3svc_encode_entry_plus(void *, const char *name,
/* Helper functions for NFSv3 ACL code */
__be32 *nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p,
struct svc_fh *fhp);
-__be32 *nfs3svc_decode_fh(__be32 *p, struct svc_fh *fhp);
-
+bool svcxdr_decode_nfs_fh3(struct xdr_stream *xdr, struct svc_fh *fhp);
#endif /* _LINUX_NFSD_XDR3_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-27 03:03:27 +0000