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Ticket #4033: vmount.h

File vmount.h, 10.7 KB (added by dp, 5 years ago)

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1	/* IBM_PROLOG_BEGIN_TAG */
2	/* This is an automatically generated prolog. */
3	/* */
4	/* bos720 src/bos/kernel/sys/vmount.h 1.58.2.3 */
5	/* */
6	/* Licensed Materials - Property of IBM */
7	/* */
8	/* COPYRIGHT International Business Machines Corp. 1985,2015 */
9	/* All Rights Reserved */
10	/* */
11	/* US Government Users Restricted Rights - Use, duplication or */
12	/* disclosure restricted by GSA ADP Schedule Contract with IBM Corp. */
13	/* */
14	/* IBM_PROLOG_END_TAG */
15	/* @(#)95 1.58.2.3 src/bos/kernel/sys/vmount.h, syslfs, bos720, 1510A_720 2/23/15 09:55:54 */
16	#ifndef _H_VMOUNT
17	#define _H_VMOUNT
18
19	/*
20	* COMPONENT_NAME: SYSLFS - Logical File System
21	*
22	* FUNCTIONS:
23	*
24	* ORIGINS: 27
25	*
26	*/
27
28	#ifdef __cplusplus
29	extern "C" {
30	#endif
31
32	/*
33	* Types of file systems for the vmount system call
34	* NOTE - When implementing new file system types, ensure
35	* that the vfs numbers do not conflict.
36	*
37	* NFS NOTE - When adding a new version of NFS, checking for the new
38	* NFS type is needed to the following functions/files:
39	* openpnp / open.c
40	* insflck and common_reclock / lockctl.c
41	* jfs_do_cr / lsfs.c
42	* In addition, kdb should be aware of the new type.
43	*/
44
45
46	#define MNT_AIX 0 /* Same as MNT_J2 */
47	#define MNT_J2 0 /* AIX physical fs "jfs2" */
48	#define MNT_NAMEFS 1 /* AIX pseudo fs "namefs" */
49	#define MNT_NFS 2 /* SUN Network File System "nfs" */
50	#define MNT_JFS 3 /* AIX R3 physical fs "jfs" */
51	#define MNT_CDROM 5 /* CDROM File System "cdrom" */
52	#define MNT_PROCFS 6 /* PROCFS File System "proc" */
53
54	#define MNT_USRVFS 8 /* first 8 (0 - 7) reserved for IBM use */
55
56	/* User file systems use MNT_USRVFS to MNT_USRLAST. */
57	#define MNT_SFS 16 /* AIX Special FS (STREAM mounts) */
58	#define MNT_CACHEFS 17 /* Cachefs file system */
59	#define MNT_NFS3 18 /* NFSv3 file system */
60	#define MNT_AUTOFS 19 /* Automount file system */
61	#define MNT_POOLFS 20 /* Pool file system */
62
63	#define MNT_USRLAST 31 /* last valid user file system */
64
65	/* vfs numbers above MNT_USRLAST reserved for IBM use only */
66	#define MNT_VXFS 32 /* THRPGIO File System "vxfs" */
67	#define MNT_VXODM 33 /* For Veritas File System */
68	#define MNT_UDF 34 /* UDFS file system */
69	#define MNT_NFS4 35 /* NFSv4 file system */
70	#define MNT_RFS4 36 /* NFSv4 Pseudo file system */
71	#define MNT_CIFS 37 /* AIX SMBFS (CIFS client) */
72	#define MNT_PMEMFS 38 /* MCR Async Mobility pseudo file system */
73
74	#define MNT_AHAFS 39 /* AHAFS File System "aha" */
75
76	#define MNT_STNFS 40 /* Short-Term NFS */
77	#define MNT_ASMFS 41 /* Oracle ASM FS */
78
79	#define MNT_AIXLAST 47 /* last valid vfs number */
80
81	#define MNT_BADVFS -1 /* always illegal vfs type */
82
83
84	/*
85	* Definitions for bits in the vfs_flag field.
86	*
87	* Some of these are renamed and used as mount flags
88	*/
89
90	/* VFS flags */
91
92	#define VFS_READONLY 0x00000001 /* rdonly access to vfs */
93	#define VFS_REMOVABLE 0x00000002 /* removable (diskette) media */
94	#define VFS_DEVMOUNT 0x00000004 /* physical device mount */
95	#define VFS_REMOTE 0x00000008 /* file system is on network */
96	#define VFS_SYSV_MOUNT 0x00000010 /* System V style mount */
97	#define VFS_UNMOUNTING 0x00000020 /* originated by unmount() */
98	#define VFS_NOSUID 0x00000040 /* don't maintain suid-ness */
99	/* across this mount */
100	#define VFS_NODEV 0x00000080 /* don't allow device access */
101	/* across this mount */
102	#define VFS_NOINTEG 0x00000100 /* no integrity mount option */
103	#define VFS_NOMANAGER 0x00000200 /* mount managed fs w/o manager */
104	#define VFS_NOCASE 0x00000400 /* do not map dir names */
105	#define VFS_UPCASE 0x00000800 /* map dir names to uppercase */
106	#define VFS_NBC 0x00001000 /* NBC cached file in this vfs */
107	#define VFS_MIND 0x00002000 /* multi-segment .indirect */
108	#define VFS_RBR 0x00004000 /* Release-behind when reading */
109	#define VFS_RBW 0x00008000 /* Release-behind when writing */
110	#define VFS_DISCONNECTED 0x00010000 /* file mount not in use */
111	#define VFS_SHUTDOWN 0x00020000 /* forced unmount for shutdown */
112	#define VFS_VMOUNTOK 0x00040000 /* dir/file mnt permission flag */
113	#define VFS_SUSER 0x00080000 /* client-side suser perm. flag */
114	#define VFS_SOFT_MOUNT 0x00100000 /* file-over-file or directory */
115	/* over directory "soft" mount */
116	#define VFS_UNMOUNTED 0x00200000 /* unmount completed, stale */
117	/* vnodes are left in the vfs */
118	#define VFS_DEADMOUNT 0x00400000 /* softmount vfs should be */
119	/* disconnected at last vnode */
120	/* free */
121	#define VFS_SNAPSHOT 0x00800000 /* snapshot mount */
122	#define VFS_VCM_ON 0x01000000 /* VCM is currently active */
123	#define VFS_VCM_MONITOR 0x02000000 /* VCM monitoring is active */
124	#define VFS_ATIMEOFF 0x04000000 /* no atime updates during i/o */
125	#define VFS_READMOSTLY 0x10000000 /* ROFS allows open for write */
126	#define VFS_CIOR 0x20000000 /* O_CIOR mount */
127	#define VFS_CIO 0x40000000 /* O_CIO mount */
128	#define VFS_DIO 0x80000000 /* O_DIRECT mount */
129
130
131	/* Mount flags */
132	#define MNT_READONLY VFS_READONLY
133	#define MNT_REMOVABLE VFS_REMOVABLE
134	#define MNT_DEVICE VFS_DEVMOUNT
135	#define MNT_REMOTE VFS_REMOTE
136	#define MNT_SYSV_MOUNT VFS_SYSV_MOUNT
137	#define MNT_UNMOUNTING VFS_UNMOUNTING
138	#define MNT_NOSUID VFS_NOSUID
139	#define MNT_NODEV VFS_NODEV
140	#define MNT_NOINTEG VFS_NOINTEG
141	#define MNT_NOMANAGER VFS_NOMANAGER
142	#define MNT_NOCASE VFS_NOCASE
143	#define MNT_UPCASE VFS_UPCASE
144	#define MNT_VFS_NBC VFS_NBC
145	#define MNT_MIND VFS_MIND
146	#define MNT_RBR VFS_RBR
147	#define MNT_RBW VFS_RBW
148	#define MNT_DIO VFS_DIO
149	#define MNT_SNAPSHOT VFS_SNAPSHOT
150	#define MNT_CIO VFS_CIO
151	#define MNT_CIOR VFS_CIOR
152	#define MNT_READMOSTLY VFS_READMOSTLY
153	#define MNT_ATIMEOFF VFS_ATIMEOFF
154
155
156
157
158	/*
159	* The following may be used as flags for mount(2) and vmount(2) calls.
160	* MNT_DEVICE, MNT_REMOTE are output only -- ignored as input, set by vmount
161	*/
162	#define VMOUNT_MASK \
163	(MNT_READONLY \| MNT_REMOVABLE \| MNT_SYSV_MOUNT \| MNT_NOSUID \| \
164	MNT_NODEV \| MNT_NOINTEG \| MNT_NOMANAGER \| MNT_NOCASE \| MNT_UPCASE \| \
165	MNT_MIND \| MNT_RBR \| MNT_RBW \| MNT_DIO \| MNT_SNAPSHOT \| \
166	MNT_CIO \| MNT_CIOR \| MNT_READMOSTLY \| MNT_ATIMEOFF)
167
168
169	/*
170	* The variable length data descriptors are an array of offsets
171	* (from beginning of struct vmount) and sizes.
172	* NOTES:
173	* If a particular area has no data, offset and size should be 0.
174	* The size must always be filled in, even if the data is a NULL
175	* terminated printable text string.
176	*/
177	#define VMT_OBJECT 0 /* I index of object name */
178	#define VMT_STUB 1 /* I index of mounted over stub name */
179	#define VMT_HOST 2 /* I index of (short) hostname */
180	#define VMT_HOSTNAME 3 /* I index of (long) hostname */
181	#define VMT_INFO 4 /* I index of binary vfs specific info */
182	/* includes network address, opts, etc*/
183	#define VMT_ARGS 5 /* I index of text of vfs specific args */
184	#define VMT_LASTINDEX 5 /* I the last in the array of structs */
185
186	/*
187	* Vmount system call argument, also a mntctl return structure.
188	* This structure has a fixed size of data and offsets, and then
189	* has the data for the fs pointed to by "vmount ptr + offset".
190	* If a particular area has no data, the offset and size should be 0.
191	* Input parameters are indicated by "I", output only parameters
192	* are indicated by "O" (input parameters are also output).
193	*/
194	struct vmount {
195	uint vmt_revision; /* I revision level, currently 1 */
196	uint vmt_length; /* I total length of structure and data */
197	#if !defined(_KERNEL) && defined(__64BIT__)
198	fsid64_t vmt_fsid; /* O id of file system */
199	#else
200	fsid_t vmt_fsid; /* O id of file system */
201	#endif
202	int vmt_vfsnumber; /* O unique mount id of file system */
203	uint vmt_time; /* O time of mount */
204	uint vmt_timepad; /* O (in future, time is 2 longs) */
205	int vmt_flags; /* I general mount flags */
206	/* O MNT_REMOTE is output only */
207	int vmt_gfstype; /* I type of gfs, see MNT_XXX above */
208	struct vmt_data {
209	short vmt_off; /* I offset of data, word aligned */
210	short vmt_size; /* I actual size of data in bytes */
211	} vmt_data[VMT_LASTINDEX + 1];
212	/*
213	* the variable length data goes here, starting at word (32 bit)
214	* boundaries.
215	*/
216	};
217
218	#define VMT_DATAPAD 512 /* extra space for remount with added options */
219	#define VMT_REVISION 1 /* current version of struct vmount */
220
221	/*
222	* macros to easily get ptr and size of variable length info
223	* given ptr to vmount structure and index to object
224	*/
225	#define vmt2dataptr(vmt, idx) ((caddr_t)(((long)(vmt)) + \
226	((vmt)->vmt_data[(idx)].vmt_off)))
227	#define vmt2datasize(vmt, idx) ((vmt)->vmt_data[(idx)].vmt_size)
228
229	/*
230	* mntctl operations and arguments.
231	* mntctl(cmd, size, buf)
232	* cmd - one of the command defines below (MCTL_????)
233	* size - size of the area that buf points to
234	* buf - pointer to an argument/results area
235	*/
236	#define MCTL_QUERY 2 /* (new style) query what is mounted
237	* buf points to array of vmount structures
238	* (which are variable length)
239	* returns: 0 = look in first word of buf
240	* for needed size,
241	* -1 = error,
242	* >0 = number of vmount structs in buf
243	*/
244	#define MCTL_QUERY_MY_MNTS 8 /* query which mounts have been issued
245	* from within a WPAR.
246	*/
247	#define MCTL_REMNT 0x0013 /* change the mount options of mounted
248	* mounted file system. This request is
249	* passed to underlying file system through
250	* VFS_CNTL.
251	*/
252	#define MCTL_GET_MNTDOVER_INO 0x0014 /* query the mntdover ino number */
253	#define MCTL_QUERY_MNT_FROZEN 0x0015
254
255	struct mctl_mntdover_ino {
256	ino64_t mctl_mntdover_ino; /* O ino for mntdover vnode */
257	char mctl_mntdover_path; / I path for mntdover vnode */
258	};
259
260	/*
261	* flags for the uvmount(2) system call
262	* int uvmount(vfsnumber, flags)
263	* int vfsnumber; number from vmount structure, or statfs
264	*/
265	#define UVMNT_FORCE 0x0001 /* force the unmount, regardless! */
266
267	/* Function prototypes */
268	int vmount(struct vmount *, int);
269	int uvmount(int, int);
270	int mntctl(int, size_t, char *);
271	int fscntl(int, int, caddr_t, size_t);
272
273	#ifdef __cplusplus
274	}
275	#endif
276
277	#endif /* _H_VMOUNT */

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