2 * SPDX-License-Identifier: Beerware
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 * ----------------------------------------------------------------------------
18 #include <sys/ioccom.h>
19 #include <sys/kerneldump.h>
20 #include <sys/types.h>
21 #include <sys/disk_zone.h>
26 #include <sys/conf.h> /* XXX: temporary to avoid breakage */
29 void disk_err(struct bio *bp, const char *what, int blkdone, int nl);
33 #define DIOCGSECTORSIZE _IOR('d', 128, u_int)
35 * Get the sector size of the device in bytes. The sector size is the
36 * smallest unit of data which can be transferred from this device.
37 * Usually this is a power of 2 but it might not be (i.e. CDROM audio).
40 #define DIOCGMEDIASIZE _IOR('d', 129, off_t) /* Get media size in bytes */
42 * Get the size of the entire device in bytes. This should be a
43 * multiple of the sector size.
46 #define DIOCGFWSECTORS _IOR('d', 130, u_int) /* Get firmware's sectorcount */
48 * Get the firmware's notion of number of sectors per track. This
49 * value is mostly used for compatibility with various ill designed
50 * disk label formats. Don't use it unless you have to.
53 #define DIOCGFWHEADS _IOR('d', 131, u_int) /* Get firmware's headcount */
55 * Get the firmwares notion of number of heads per cylinder. This
56 * value is mostly used for compatibility with various ill designed
57 * disk label formats. Don't use it unless you have to.
60 #define DIOCSKERNELDUMP_FREEBSD11 _IOW('d', 133, u_int)
62 * Enable/Disable (the argument is boolean) the device for kernel
66 #define DIOCGFRONTSTUFF _IOR('d', 134, off_t)
68 * Many disk formats have some amount of space reserved at the
69 * start of the disk to hold bootblocks, various disklabels and
70 * similar stuff. This ioctl returns the number of such bytes
71 * which may apply to the device.
74 #define DIOCGFLUSH _IO('d', 135) /* Flush write cache */
76 * Flush write cache of the device.
79 #define DIOCGDELETE _IOW('d', 136, off_t[2]) /* Delete data */
81 * Mark data on the device as unused.
84 #define DISK_IDENT_SIZE 256
85 #define DIOCGIDENT _IOR('d', 137, char[DISK_IDENT_SIZE])
87 * Get the ident of the given provider. Ident is (most of the time)
88 * a uniqe and fixed provider's identifier. Ident's properties are as
90 * - ident value is preserved between reboots,
91 * - provider can be detached/attached and ident is preserved,
92 * - provider's name can change - ident can't,
93 * - ident value should not be based on on-disk metadata; in other
94 * words copying whole data from one disk to another should not
95 * yield the same ident for the other disk,
96 * - there could be more than one provider with the same ident, but
97 * only if they point at exactly the same physical storage, this is
98 * the case for multipathing for example,
99 * - GEOM classes that consumes single providers and provide single
100 * providers, like geli, gbde, should just attach class name to the
101 * ident of the underlying provider,
102 * - ident is an ASCII string (is printable),
103 * - ident is optional and applications can't relay on its presence.
106 #define DIOCGPROVIDERNAME _IOR('d', 138, char[MAXPATHLEN])
108 * Store the provider name, given a device path, in a buffer. The buffer
109 * must be at least MAXPATHLEN bytes long.
112 #define DIOCGSTRIPESIZE _IOR('d', 139, off_t) /* Get stripe size in bytes */
114 * Get the size of the device's optimal access block in bytes.
115 * This should be a multiple of the sector size.
118 #define DIOCGSTRIPEOFFSET _IOR('d', 140, off_t) /* Get stripe offset in bytes */
120 * Get the offset of the first device's optimal access block in bytes.
121 * This should be a multiple of the sector size.
124 #define DIOCGPHYSPATH _IOR('d', 141, char[MAXPATHLEN])
126 * Get a string defining the physical path for a given provider.
127 * This has similar rules to ident, but is intended to uniquely
128 * identify the physical location of the device, not the current
129 * occupant of that location.
132 struct diocgattr_arg {
136 char str[DISK_IDENT_SIZE];
142 #define DIOCGATTR _IOWR('d', 142, struct diocgattr_arg)
144 #define DIOCZONECMD _IOWR('d', 143, struct disk_zone_args)
146 struct diocskerneldump_arg {
148 uint8_t kda_compression;
149 uint8_t kda_encryption;
150 uint8_t kda_key[KERNELDUMP_KEY_MAX_SIZE];
151 uint32_t kda_encryptedkeysize;
152 uint8_t *kda_encryptedkey;
154 #define DIOCSKERNELDUMP _IOW('d', 144, struct diocskerneldump_arg)
156 * Enable/Disable the device for kernel core dumps.
159 #endif /* _SYS_DISK_H_ */