FreeBSD/Linux Kernel Cross Reference
sys/sys/disk.h
1 /*-
2 * SPDX-License-Identifier: Beerware
3 *
4 * ----------------------------------------------------------------------------
5 * "THE BEER-WARE LICENSE" (Revision 42):
6 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
7 * can do whatever you want with this stuff. If we meet some day, and you think
8 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
9 * ----------------------------------------------------------------------------
10 *
11 * $FreeBSD$
12 *
13 */
14
15 #ifndef _SYS_DISK_H_
16 #define _SYS_DISK_H_
17
18 #include <sys/ioccom.h>
19 #include <sys/kerneldump.h>
20 #include <sys/types.h>
21 #include <sys/disk_zone.h>
22 #include <sys/socket.h>
23
24 #ifdef _KERNEL
25
26 void disk_err(struct bio *bp, const char *what, int blkdone, int nl);
27
28 #endif
29
30 #define DIOCGSECTORSIZE _IOR('d', 128, u_int)
31 /*
32 * Get the sector size of the device in bytes. The sector size is the
33 * smallest unit of data which can be transferred from this device.
34 * Usually this is a power of 2 but it might not be (i.e. CDROM audio).
35 */
36
37 #define DIOCGMEDIASIZE _IOR('d', 129, off_t) /* Get media size in bytes */
38 /*
39 * Get the size of the entire device in bytes. This should be a
40 * multiple of the sector size.
41 */
42
43 #define DIOCGFWSECTORS _IOR('d', 130, u_int) /* Get firmware's sectorcount */
44 /*
45 * Get the firmware's notion of number of sectors per track. This
46 * value is mostly used for compatibility with various ill designed
47 * disk label formats. Don't use it unless you have to.
48 */
49
50 #define DIOCGFWHEADS _IOR('d', 131, u_int) /* Get firmware's headcount */
51 /*
52 * Get the firmwares notion of number of heads per cylinder. This
53 * value is mostly used for compatibility with various ill designed
54 * disk label formats. Don't use it unless you have to.
55 */
56
57 #define DIOCGFLUSH _IO('d', 135) /* Flush write cache */
58 /*
59 * Flush write cache of the device.
60 */
61
62 #define DIOCGDELETE _IOW('d', 136, off_t[2]) /* Delete data */
63 /*
64 * Mark data on the device as unused.
65 */
66
67 #define DISK_IDENT_SIZE 256
68 #define DIOCGIDENT _IOR('d', 137, char[DISK_IDENT_SIZE])
69 /*-
70 * Get the ident of the given provider. Ident is (most of the time)
71 * a uniqe and fixed provider's identifier. Ident's properties are as
72 * follow:
73 * - ident value is preserved between reboots,
74 * - provider can be detached/attached and ident is preserved,
75 * - provider's name can change - ident can't,
76 * - ident value should not be based on on-disk metadata; in other
77 * words copying whole data from one disk to another should not
78 * yield the same ident for the other disk,
79 * - there could be more than one provider with the same ident, but
80 * only if they point at exactly the same physical storage, this is
81 * the case for multipathing for example,
82 * - GEOM classes that consumes single providers and provide single
83 * providers, like geli, gbde, should just attach class name to the
84 * ident of the underlying provider,
85 * - ident is an ASCII string (is printable),
86 * - ident is optional and applications can't relay on its presence.
87 */
88
89 #define DIOCGPROVIDERNAME _IOR('d', 138, char[MAXPATHLEN])
90 /*
91 * Store the provider name, given a device path, in a buffer. The buffer
92 * must be at least MAXPATHLEN bytes long.
93 */
94
95 #define DIOCGSTRIPESIZE _IOR('d', 139, off_t) /* Get stripe size in bytes */
96 /*
97 * Get the size of the device's optimal access block in bytes.
98 * This should be a multiple of the sector size.
99 */
100
101 #define DIOCGSTRIPEOFFSET _IOR('d', 140, off_t) /* Get stripe offset in bytes */
102 /*
103 * Get the offset of the first device's optimal access block in bytes.
104 * This should be a multiple of the sector size.
105 */
106
107 #define DIOCGPHYSPATH _IOR('d', 141, char[MAXPATHLEN])
108 /*
109 * Get a string defining the physical path for a given provider.
110 * This has similar rules to ident, but is intended to uniquely
111 * identify the physical location of the device, not the current
112 * occupant of that location.
113 */
114
115 struct diocgattr_arg {
116 char name[64];
117 int len;
118 union {
119 char str[DISK_IDENT_SIZE];
120 off_t off;
121 int i;
122 uint16_t u16;
123 } value;
124 };
125 #define DIOCGATTR _IOWR('d', 142, struct diocgattr_arg)
126
127 #define DIOCZONECMD _IOWR('d', 143, struct disk_zone_args)
128
129 #ifndef WITHOUT_NETDUMP
130 #include <net/if.h>
131 #include <netinet/in.h>
132
133 union kd_ip {
134 struct in_addr in4;
135 struct in6_addr in6;
136 };
137
138 /*
139 * Sentinel values for kda_index.
140 *
141 * If kda_index is KDA_REMOVE_ALL, all dump configurations are cleared.
142 *
143 * If kda_index is KDA_REMOVE_DEV, all dump configurations for the specified
144 * device are cleared.
145 *
146 * If kda_index is KDA_REMOVE, only the specified dump configuration for the
147 * given device is removed from the list of fallback dump configurations.
148 *
149 * If kda_index is KDA_APPEND, the dump configuration is added after all
150 * existing dump configurations.
151 *
152 * Otherwise, the new configuration is inserted into the fallback dump list at
153 * index 'kda_index'.
154 */
155 #define KDA_REMOVE UINT8_MAX
156 #define KDA_REMOVE_ALL (UINT8_MAX - 1)
157 #define KDA_REMOVE_DEV (UINT8_MAX - 2)
158 #define KDA_APPEND (UINT8_MAX - 3)
159 struct diocskerneldump_arg {
160 uint8_t kda_index;
161 uint8_t kda_compression;
162 uint8_t kda_encryption;
163 uint8_t kda_key[KERNELDUMP_KEY_MAX_SIZE];
164 uint32_t kda_encryptedkeysize;
165 uint8_t *kda_encryptedkey;
166 char kda_iface[IFNAMSIZ];
167 union kd_ip kda_server;
168 union kd_ip kda_client;
169 union kd_ip kda_gateway;
170 uint8_t kda_af;
171 };
172 #define DIOCSKERNELDUMP _IOW('d', 145, struct diocskerneldump_arg)
173 /*
174 * Enable/Disable the device for kernel core dumps.
175 */
176
177 #define DIOCGKERNELDUMP _IOWR('d', 146, struct diocskerneldump_arg)
178 /*
179 * Get current kernel netdump configuration details for a given index.
180 */
181 #endif
182
183 #endif /* _SYS_DISK_H_ */
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