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Diffstat (limited to 'fs/nfsd/nfsd.h')
-rw-r--r--fs/nfsd/nfsd.h113
1 files changed, 74 insertions, 39 deletions
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 8f4f239d9f8a..e4263326ca4a 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -23,9 +23,7 @@
#include <uapi/linux/nfsd/debug.h>
-#include "netns.h"
#include "export.h"
-#include "stats.h"
#undef ifdebug
#ifdef CONFIG_SUNRPC_DEBUG
@@ -37,33 +35,30 @@
/*
* nfsd version
*/
+#define NFSD_MINVERS 2
+#define NFSD_MAXVERS 4
#define NFSD_SUPPORTED_MINOR_VERSION 2
-/*
- * Maximum blocksizes supported by daemon under various circumstances.
- */
-#define NFSSVC_MAXBLKSIZE RPCSVC_MAXPAYLOAD
-/* NFSv2 is limited by the protocol specification, see RFC 1094 */
-#define NFSSVC_MAXBLKSIZE_V2 (8*1024)
+bool nfsd_support_version(int vers);
+#include "netns.h"
+#include "stats.h"
/*
- * Largest number of bytes we need to allocate for an NFS
- * call or reply. Used to control buffer sizes. We use
- * the length of v3 WRITE, READDIR and READDIR replies
- * which are an RPC header, up to 26 XDR units of reply
- * data, and some page data.
- *
- * Note that accuracy here doesn't matter too much as the
- * size is rounded up to a page size when allocating space.
+ * Default and maximum payload size (NFS READ or WRITE), in bytes.
+ * The default is historical, and the maximum is an implementation
+ * limit.
*/
-#define NFSD_BUFSIZE ((RPC_MAX_HEADER_WITH_AUTH+26)*XDR_UNIT + NFSSVC_MAXBLKSIZE)
+enum {
+ NFSSVC_DEFBLKSIZE = 1 * 1024 * 1024,
+ NFSSVC_MAXBLKSIZE = RPCSVC_MAXPAYLOAD,
+};
struct readdir_cd {
__be32 err; /* 0, nfserr, or nfserr_eof */
};
/* Maximum number of operations per session compound */
-#define NFSD_MAX_OPS_PER_COMPOUND 50
+#define NFSD_MAX_OPS_PER_COMPOUND 200
struct nfsd_genl_rqstp {
struct sockaddr rq_daddr;
@@ -77,15 +72,12 @@ struct nfsd_genl_rqstp {
/* NFSv4 compound */
u32 rq_opcnt;
- u32 rq_opnum[NFSD_MAX_OPS_PER_COMPOUND];
+ u32 rq_opnum[16];
};
-extern struct svc_program nfsd_program;
+extern struct svc_program nfsd_programs[];
extern const struct svc_version nfsd_version2, nfsd_version3, nfsd_version4;
extern struct mutex nfsd_mutex;
-extern spinlock_t nfsd_drc_lock;
-extern unsigned long nfsd_drc_max_mem;
-extern unsigned long nfsd_drc_mem_used;
extern atomic_t nfsd_th_cnt; /* number of available threads */
extern const struct seq_operations nfs_exports_op;
@@ -103,18 +95,17 @@ bool nfssvc_encode_voidres(struct svc_rqst *rqstp,
/*
* Function prototypes.
*/
-int nfsd_svc(int nrservs, struct net *net, const struct cred *cred, const char *scope);
+int nfsd_svc(int n, int *nservers, struct net *net,
+ const struct cred *cred, const char *scope);
int nfsd_dispatch(struct svc_rqst *rqstp);
int nfsd_nrthreads(struct net *);
int nfsd_nrpools(struct net *);
int nfsd_get_nrthreads(int n, int *, struct net *);
int nfsd_set_nrthreads(int n, int *, struct net *);
-int nfsd_pool_stats_open(struct inode *, struct file *);
-int nfsd_pool_stats_release(struct inode *, struct file *);
void nfsd_shutdown_threads(struct net *net);
-bool i_am_nfsd(void);
+struct svc_rqst *nfsd_current_rqst(void);
struct nfsdfs_client {
struct kref cl_ref;
@@ -142,6 +133,10 @@ extern const struct svc_version nfsd_acl_version3;
#endif
#endif
+#if IS_ENABLED(CONFIG_NFS_LOCALIO)
+extern const struct svc_version localio_version1;
+#endif
+
struct nfsd_net;
enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
@@ -151,11 +146,31 @@ void nfsd_reset_versions(struct nfsd_net *nn);
int nfsd_create_serv(struct net *net);
void nfsd_destroy_serv(struct net *net);
+#ifdef CONFIG_DEBUG_FS
+void nfsd_debugfs_init(void);
+void nfsd_debugfs_exit(void);
+#else
+static inline void nfsd_debugfs_init(void) {}
+static inline void nfsd_debugfs_exit(void) {}
+#endif
+
+extern bool nfsd_disable_splice_read __read_mostly;
+
+enum {
+ /* Any new NFSD_IO enum value must be added at the end */
+ NFSD_IO_BUFFERED,
+ NFSD_IO_DONTCACHE,
+ NFSD_IO_DIRECT,
+};
+
+extern u64 nfsd_io_cache_read __read_mostly;
+extern u64 nfsd_io_cache_write __read_mostly;
+
extern int nfsd_max_blksize;
static inline int nfsd_v4client(struct svc_rqst *rq)
{
- return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
+ return rq && rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
}
static inline struct user_namespace *
nfsd_user_namespace(const struct svc_rqst *rqstp)
@@ -278,6 +293,7 @@ void nfsd_lockd_shutdown(void);
#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
+#define nfserr_delay cpu_to_be32(NFS4ERR_DELAY)
#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
@@ -326,17 +342,30 @@ void nfsd_lockd_shutdown(void);
#define nfserr_xattr2big cpu_to_be32(NFS4ERR_XATTR2BIG)
#define nfserr_noxattr cpu_to_be32(NFS4ERR_NOXATTR)
-/* error codes for internal use */
-/* if a request fails due to kmalloc failure, it gets dropped.
- * Client should resend eventually
+/*
+ * Error codes for internal use. We use enum to choose numbers that are
+ * not already assigned, then covert to be32 resulting in a number that
+ * cannot conflict with any existing be32 nfserr value.
*/
-#define nfserr_dropit cpu_to_be32(30000)
+enum {
/* end-of-file indicator in readdir */
-#define nfserr_eof cpu_to_be32(30001)
+ NFSERR_EOF = NFS4ERR_FIRST_FREE,
+#define nfserr_eof cpu_to_be32(NFSERR_EOF)
+
/* replay detected */
-#define nfserr_replay_me cpu_to_be32(11001)
+ NFSERR_REPLAY_ME,
+#define nfserr_replay_me cpu_to_be32(NFSERR_REPLAY_ME)
+
/* nfs41 replay detected */
-#define nfserr_replay_cache cpu_to_be32(11002)
+ NFSERR_REPLAY_CACHE,
+#define nfserr_replay_cache cpu_to_be32(NFSERR_REPLAY_CACHE)
+
+/* symlink found where dir expected - handled differently to
+ * other symlink found errors by NFSv3.
+ */
+ NFSERR_SYMLINK_NOT_DIR,
+#define nfserr_symlink_not_dir cpu_to_be32(NFSERR_SYMLINK_NOT_DIR)
+};
/* Check for dir entries '.' and '..' */
#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
@@ -369,14 +398,13 @@ void nfsd_lockd_shutdown(void);
#define NFSD_CB_GETATTR_TIMEOUT NFSD_DELEGRETURN_TIMEOUT
/*
- * The following attributes are currently not supported by the NFSv4 server:
+ * The following attributes are not implemented by NFSD:
* ARCHIVE (deprecated anyway)
* HIDDEN (unlikely to be supported any time soon)
* MIMETYPE (unlikely to be supported any time soon)
* QUOTA_* (will be supported in a forthcoming patch)
* SYSTEM (unlikely to be supported any time soon)
* TIME_BACKUP (unlikely to be supported any time soon)
- * TIME_CREATE (unlikely to be supported any time soon)
*/
#define NFSD4_SUPPORTED_ATTRS_WORD0 \
(FATTR4_WORD0_SUPPORTED_ATTRS | FATTR4_WORD0_TYPE | FATTR4_WORD0_FH_EXPIRE_TYPE \
@@ -430,8 +458,12 @@ void nfsd_lockd_shutdown(void);
#define NFSD4_2_SUPPORTED_ATTRS_WORD2 \
(NFSD4_1_SUPPORTED_ATTRS_WORD2 | \
FATTR4_WORD2_MODE_UMASK | \
+ FATTR4_WORD2_CLONE_BLKSIZE | \
NFSD4_2_SECURITY_ATTRS | \
- FATTR4_WORD2_XATTR_SUPPORT)
+ FATTR4_WORD2_XATTR_SUPPORT | \
+ FATTR4_WORD2_TIME_DELEG_ACCESS | \
+ FATTR4_WORD2_TIME_DELEG_MODIFY | \
+ FATTR4_WORD2_OPEN_ARGUMENTS)
extern const u32 nfsd_suppattrs[3][3];
@@ -501,7 +533,10 @@ static inline bool nfsd_attrs_supported(u32 minorversion, const u32 *bmval)
#endif
#define NFSD_WRITEABLE_ATTRS_WORD2 \
(FATTR4_WORD2_MODE_UMASK \
- | MAYBE_FATTR4_WORD2_SECURITY_LABEL)
+ | MAYBE_FATTR4_WORD2_SECURITY_LABEL \
+ | FATTR4_WORD2_TIME_DELEG_ACCESS \
+ | FATTR4_WORD2_TIME_DELEG_MODIFY \
+ )
#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
NFSD_WRITEABLE_ATTRS_WORD0
generated by cgit (git 2.34.1) at 2025-12-25 06:16:01 +0000