Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * This file contains all the stubs needed when communicating with lockd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * This level of indirection is necessary so we can run nfsd+lockd without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * requiring the nfs client to be compiled in/loaded, and vice versa.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/lockd/bind.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "nfsd.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "vfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define NFSDDBG_FACILITY		NFSDDBG_LOCKD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #ifdef CONFIG_LOCKD_V4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define nlm_stale_fh	nlm4_stale_fh
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define nlm_failed	nlm4_failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define nlm_stale_fh	nlm_lck_denied_nolocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define nlm_failed	nlm_lck_denied_nolocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  * Note: we hold the dentry use count while the file is open.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static __be32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	__be32		nfserr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	struct svc_fh	fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	/* must initialize before using! but maxsize doesn't matter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	fh_init(&fh,0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	fh.fh_handle.fh_size = f->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	fh.fh_export = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	nfserr = nfsd_open(rqstp, &fh, S_IFREG, NFSD_MAY_LOCK, filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	fh_put(&fh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)  	/* We return nlm error codes as nlm doesn't know
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	 * about nfsd, but nfsd does know about nlm..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	switch (nfserr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	case nfs_ok:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	case nfserr_dropit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		return nlm_drop_reply;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	case nfserr_stale:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		return nlm_stale_fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		return nlm_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) nlm_fclose(struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	fput(filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static const struct nlmsvc_binding nfsd_nlm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	.fopen		= nlm_fopen,		/* open file for locking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	.fclose		= nlm_fclose,		/* close file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) nfsd_lockd_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	dprintk("nfsd: initializing lockd\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	nlmsvc_ops = &nfsd_nlm_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) nfsd_lockd_shutdown(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	nlmsvc_ops = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }