1 /* $OpenBSD: fuse_file.c,v 1.10 2024/10/31 13:55:21 claudio Exp $ */
2 /*
3 * Copyright (c) 2012-2013 Sylvestre Gallon <ccna.syl@gmail.com>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <sys/param.h>
19 #include <sys/systm.h>
20 #include <sys/stat.h>
21 #include <sys/statvfs.h>
22 #include <sys/vnode.h>
23 #include <sys/fusebuf.h>
24
25 #include "fusefs_node.h"
26 #include "fusefs.h"
27
28 int
fusefs_file_open(struct fusefs_mnt * fmp,struct fusefs_node * ip,enum fufh_type fufh_type,int flags,int isdir,struct proc * p)29 fusefs_file_open(struct fusefs_mnt *fmp, struct fusefs_node *ip,
30 enum fufh_type fufh_type, int flags, int isdir, struct proc *p)
31 {
32 struct fusebuf *fbuf;
33 int error = 0;
34
35 if (!fmp->sess_init)
36 return (0);
37
38 fbuf = fb_setup(0, ip->i_number,
39 ((isdir) ? FBT_OPENDIR : FBT_OPEN), p);
40 fbuf->fb_io_flags = flags;
41
42 error = fb_queue(fmp->dev, fbuf);
43 if (error) {
44 fb_delete(fbuf);
45 return (error);
46 }
47
48 ip->fufh[fufh_type].fh_id = fbuf->fb_io_fd;
49 ip->fufh[fufh_type].fh_type = fufh_type;
50
51 fb_delete(fbuf);
52 return (0);
53 }
54
55 int
fusefs_file_close(struct fusefs_mnt * fmp,struct fusefs_node * ip,enum fufh_type fufh_type,int flags,int isdir,struct proc * p)56 fusefs_file_close(struct fusefs_mnt *fmp, struct fusefs_node * ip,
57 enum fufh_type fufh_type, int flags, int isdir, struct proc *p)
58 {
59 struct fusebuf *fbuf;
60 int error = 0;
61
62 if (fmp->sess_init) {
63 fbuf = fb_setup(0, ip->i_number,
64 ((isdir) ? FBT_RELEASEDIR : FBT_RELEASE), p);
65 fbuf->fb_io_fd = ip->fufh[fufh_type].fh_id;
66 fbuf->fb_io_flags = flags;
67
68 error = fb_queue(fmp->dev, fbuf);
69 if (error && (error != ENOSYS))
70 printf("fusefs: file error %d\n", error);
71
72 fb_delete(fbuf);
73 }
74
75 ip->fufh[fufh_type].fh_id = (uint64_t)-1;
76 ip->fufh[fufh_type].fh_type = FUFH_INVALID;
77
78 return (error);
79 }
80
81 uint64_t
fusefs_fd_get(struct fusefs_node * ip,enum fufh_type type)82 fusefs_fd_get(struct fusefs_node *ip, enum fufh_type type)
83 {
84 if (ip->fufh[type].fh_type == FUFH_INVALID)
85 type = FUFH_RDWR;
86
87 return (ip->fufh[type].fh_id);
88 }
89