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--- old/usr/src/uts/common/sys/file.h
+++ new/usr/src/uts/common/sys/file.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 */
25 25
26 26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
27 27 /* All Rights Reserved */
28 28
29 29 /* Copyright (c) 2013, OmniTI Computer Consulting, Inc. All rights reserved. */
30 30
31 31 #ifndef _SYS_FILE_H
32 32 #define _SYS_FILE_H
33 33
34 34 #include <sys/t_lock.h>
35 35 #ifdef _KERNEL
36 36 #include <sys/model.h>
37 37 #include <sys/user.h>
38 38 #endif
39 39
40 40 #ifdef __cplusplus
41 41 extern "C" {
42 42 #endif
43 43
44 44 /*
45 45 * fio locking:
46 46 * f_rwlock protects f_vnode and f_cred
47 47 * f_tlock protects the rest
48 48 *
49 49 * The purpose of locking in this layer is to keep the kernel
50 50 * from panicing if, for example, a thread calls close() while
51 51 * another thread is doing a read(). It is up to higher levels
52 52 * to make sure 2 threads doing I/O to the same file don't
53 53 * screw each other up.
54 54 */
55 55 /*
56 56 * One file structure is allocated for each open/creat/pipe call.
57 57 * Main use is to hold the read/write pointer associated with
58 58 * each open file.
59 59 */
60 60 typedef struct file {
61 61 kmutex_t f_tlock; /* short term lock */
62 62 ushort_t f_flag;
63 63 ushort_t f_flag2; /* extra flags (FSEARCH, FEXEC) */
64 64 struct vnode *f_vnode; /* pointer to vnode structure */
65 65 offset_t f_offset; /* read/write character pointer */
66 66 struct cred *f_cred; /* credentials of user who opened it */
67 67 struct f_audit_data *f_audit_data; /* file audit data */
68 68 int f_count; /* reference count */
69 69 } file_t;
70 70
71 71 /*
72 72 * fpollinfo struct - used by poll caching to track who has polled the fd
73 73 */
74 74 typedef struct fpollinfo {
75 75 struct _kthread *fp_thread; /* thread caching poll info */
76 76 struct fpollinfo *fp_next;
77 77 } fpollinfo_t;
78 78
79 79 /* f_flag */
80 80
81 81 #define FOPEN 0xffffffff
82 82 #define FREAD 0x01 /* <sys/aiocb.h> LIO_READ must be identical */
83 83 #define FWRITE 0x02 /* <sys/aiocb.h> LIO_WRITE must be identical */
84 84 #define FNDELAY 0x04
85 85 #define FAPPEND 0x08
86 86 #define FSYNC 0x10 /* file (data+inode) integrity while writing */
87 87 #define FREVOKED 0x20 /* Object reuse Revoked file */
88 88 #define FDSYNC 0x40 /* file data only integrity while writing */
89 89 #define FNONBLOCK 0x80
90 90
91 91 #define FMASK 0xa0ff /* all flags that can be changed by F_SETFL */
92 92
93 93 /* open-only modes */
94 94
95 95 #define FCREAT 0x0100
96 96 #define FTRUNC 0x0200
97 97 #define FEXCL 0x0400
98 98 #define FASYNC 0x1000 /* asyncio in progress pseudo flag */
99 99 #define FOFFMAX 0x2000 /* large file */
100 100 #define FXATTR 0x4000 /* open as extended attribute */
101 101 #define FNOCTTY 0x0800
102 102 #define FRSYNC 0x8000 /* sync read operations at same level of */
103 103 /* integrity as specified for writes by */
104 104 /* FSYNC and FDSYNC flags */
105 105
106 106 #define FNODSYNC 0x10000 /* fsync pseudo flag */
107 107
108 108 #define FNOFOLLOW 0x20000 /* don't follow symlinks */
109 109 #define FNOLINKS 0x40000 /* don't allow multiple hard links */
110 110 #define FIGNORECASE 0x80000 /* request case-insensitive lookups */
111 111 #define FXATTRDIROPEN 0x100000 /* only opening hidden attribute directory */
112 112
113 113 /* f_flag2 (open-only) */
114 114
115 115 #define FSEARCH 0x200000 /* O_SEARCH = 0x200000 */
116 116 #define FEXEC 0x400000 /* O_EXEC = 0x400000 */
117 117
118 118 #define FCLOEXEC 0x800000 /* O_CLOEXEC = 0x800000 */
119 119
120 120 #ifdef _KERNEL
121 121
122 122 /*
123 123 * Fake flags for driver ioctl calls to inform them of the originating
124 124 * process' model. See <sys/model.h>
125 125 *
126 126 * Part of the Solaris 2.6+ DDI/DKI
127 127 */
128 128 #define FMODELS DATAMODEL_MASK /* Note: 0x0ff00000 */
129 129 #define FILP32 DATAMODEL_ILP32
130 130 #define FLP64 DATAMODEL_LP64
131 131 #define FNATIVE DATAMODEL_NATIVE
132 132
133 133 /*
134 134 * Large Files: The macro gets the offset maximum (refer to LFS API doc)
135 135 * corresponding to a file descriptor. We had the choice of storing
136 136 * this value in file descriptor. Right now we only have two
137 137 * offset maximums one if MAXOFF_T and other is MAXOFFSET_T. It is
138 138 * inefficient to store these two values in a separate member in
139 139 * file descriptor. To avoid wasting spaces we define this macro.
140 140 * The day there are more than two offset maximum we may want to
141 141 * rewrite this macro.
142 142 */
143 143
144 144 #define OFFSET_MAX(fd) ((fd->f_flag & FOFFMAX) ? MAXOFFSET_T : MAXOFF32_T)
145 145
146 146 /*
147 147 * Fake flag => internal ioctl call for layered drivers.
148 148 * Note that this flag deliberately *won't* fit into
149 149 * the f_flag field of a file_t.
150 150 *
151 151 * Part of the Solaris 2.x DDI/DKI.
152 152 */
153 153 #define FKIOCTL 0x80000000 /* ioctl addresses are from kernel */
154 154
155 155 /*
156 156 * Fake flag => this time to specify that the open(9E)
157 157 * comes from another part of the kernel, not userland.
158 158 *
159 159 * Part of the Solaris 2.x DDI/DKI.
160 160 */
161 161 #define FKLYR 0x40000000 /* layered driver call */
162 162
163 163 #endif /* _KERNEL */
164 164
165 165 /* miscellaneous defines */
166 166
167 167 #ifndef L_SET
168 168 #define L_SET 0 /* for lseek */
169 169 #endif /* L_SET */
170 170
171 171 #if defined(_KERNEL)
172 172
173 173 /*
174 174 * Routines dealing with user per-open file flags and
175 175 * user open files.
176 176 */
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176 lines elided |
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177 177 struct proc; /* forward reference for function prototype */
178 178 struct vnodeops;
179 179 struct vattr;
180 180
181 181 extern file_t *getf(int);
182 182 extern void releasef(int);
183 183 extern void areleasef(int, uf_info_t *);
184 184 #ifndef _BOOT
185 185 extern void closeall(uf_info_t *);
186 186 #endif
187 -extern void flist_fork(uf_info_t *, uf_info_t *);
187 +extern void flist_fork(proc_t *, proc_t *);
188 188 extern int closef(file_t *);
189 189 extern int closeandsetf(int, file_t *);
190 190 extern int ufalloc_file(int, file_t *);
191 191 extern int ufalloc(int);
192 192 extern int ufcanalloc(struct proc *, uint_t);
193 193 extern int falloc(struct vnode *, int, file_t **, int *);
194 194 extern void finit(void);
195 195 extern void unfalloc(file_t *);
196 196 extern void setf(int, file_t *);
197 197 extern int f_getfd_error(int, int *);
198 198 extern char f_getfd(int);
199 199 extern int f_setfd_error(int, int);
200 200 extern void f_setfd(int, char);
201 201 extern int f_getfl(int, int *);
202 202 extern int f_badfd(int, int *, int);
203 203 extern int fassign(struct vnode **, int, int *);
204 204 extern void fcnt_add(uf_info_t *, int);
205 205 extern void close_exec(uf_info_t *);
206 206 extern void clear_stale_fd(void);
207 207 extern void clear_active_fd(int);
208 208 extern void free_afd(afd_t *afd);
209 209 extern int fgetstartvp(int, char *, struct vnode **);
210 210 extern int fsetattrat(int, char *, int, struct vattr *);
211 211 extern int fisopen(struct vnode *);
212 212 extern void delfpollinfo(int);
213 213 extern void addfpollinfo(int);
214 214 extern int sock_getfasync(struct vnode *);
215 215 extern int files_can_change_zones(void);
216 216 #ifdef DEBUG
217 217 /* The following functions are only used in ASSERT()s */
218 218 extern void checkwfdlist(struct vnode *, fpollinfo_t *);
219 219 extern void checkfpollinfo(void);
220 220 extern int infpollinfo(int);
221 221 #endif /* DEBUG */
222 222
223 223 #endif /* defined(_KERNEL) */
224 224
225 225 #ifdef __cplusplus
226 226 }
227 227 #endif
228 228
229 229 #endif /* _SYS_FILE_H */
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