2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
5 * can do whatever you want with this stuff. If we meet some day, and you think
6 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
7 * ----------------------------------------------------------------------------
16 #include <sys/ioccom.h>
17 #include <sys/kerneldump.h>
18 #include <sys/types.h>
19 #include <sys/disk_zone.h>
24 #include <sys/conf.h> /* XXX: temporary to avoid breakage */
27 void disk_err(struct bio *bp, const char *what, int blkdone, int nl);
31 #define DIOCGSECTORSIZE _IOR('d', 128, u_int)
33 * Get the sector size of the device in bytes. The sector size is the
34 * smallest unit of data which can be transferred from this device.
35 * Usually this is a power of 2 but it might not be (i.e. CDROM audio).
38 #define DIOCGMEDIASIZE _IOR('d', 129, off_t) /* Get media size in bytes */
40 * Get the size of the entire device in bytes. This should be a
41 * multiple of the sector size.
44 #define DIOCGFWSECTORS _IOR('d', 130, u_int) /* Get firmware's sectorcount */
46 * Get the firmware's notion of number of sectors per track. This
47 * value is mostly used for compatibility with various ill designed
48 * disk label formats. Don't use it unless you have to.
51 #define DIOCGFWHEADS _IOR('d', 131, u_int) /* Get firmware's headcount */
53 * Get the firmwares notion of number of heads per cylinder. This
54 * value is mostly used for compatibility with various ill designed
55 * disk label formats. Don't use it unless you have to.
58 #define DIOCSKERNELDUMP_FREEBSD11 _IOW('d', 133, u_int)
60 * Enable/Disable (the argument is boolean) the device for kernel
64 #define DIOCGFRONTSTUFF _IOR('d', 134, off_t)
66 * Many disk formats have some amount of space reserved at the
67 * start of the disk to hold bootblocks, various disklabels and
68 * similar stuff. This ioctl returns the number of such bytes
69 * which may apply to the device.
72 #define DIOCGFLUSH _IO('d', 135) /* Flush write cache */
74 * Flush write cache of the device.
77 #define DIOCGDELETE _IOW('d', 136, off_t[2]) /* Delete data */
79 * Mark data on the device as unused.
82 #define DISK_IDENT_SIZE 256
83 #define DIOCGIDENT _IOR('d', 137, char[DISK_IDENT_SIZE])
85 * Get the ident of the given provider. Ident is (most of the time)
86 * a uniqe and fixed provider's identifier. Ident's properties are as
88 * - ident value is preserved between reboots,
89 * - provider can be detached/attached and ident is preserved,
90 * - provider's name can change - ident can't,
91 * - ident value should not be based on on-disk metadata; in other
92 * words copying whole data from one disk to another should not
93 * yield the same ident for the other disk,
94 * - there could be more than one provider with the same ident, but
95 * only if they point at exactly the same physical storage, this is
96 * the case for multipathing for example,
97 * - GEOM classes that consumes single providers and provide single
98 * providers, like geli, gbde, should just attach class name to the
99 * ident of the underlying provider,
100 * - ident is an ASCII string (is printable),
101 * - ident is optional and applications can't relay on its presence.
104 #define DIOCGPROVIDERNAME _IOR('d', 138, char[MAXPATHLEN])
106 * Store the provider name, given a device path, in a buffer. The buffer
107 * must be at least MAXPATHLEN bytes long.
110 #define DIOCGSTRIPESIZE _IOR('d', 139, off_t) /* Get stripe size in bytes */
112 * Get the size of the device's optimal access block in bytes.
113 * This should be a multiple of the sector size.
116 #define DIOCGSTRIPEOFFSET _IOR('d', 140, off_t) /* Get stripe offset in bytes */
118 * Get the offset of the first device's optimal access block in bytes.
119 * This should be a multiple of the sector size.
122 #define DIOCGPHYSPATH _IOR('d', 141, char[MAXPATHLEN])
124 * Get a string defining the physical path for a given provider.
125 * This has similar rules to ident, but is intended to uniquely
126 * identify the physical location of the device, not the current
127 * occupant of that location.
130 struct diocgattr_arg {
134 char str[DISK_IDENT_SIZE];
139 #define DIOCGATTR _IOWR('d', 142, struct diocgattr_arg)
141 #define DIOCZONECMD _IOWR('d', 143, struct disk_zone_args)
143 struct diocskerneldump_arg {
145 uint8_t kda_encryption;
146 uint8_t kda_key[KERNELDUMP_KEY_MAX_SIZE];
147 uint32_t kda_encryptedkeysize;
148 uint8_t *kda_encryptedkey;
150 #define DIOCSKERNELDUMP _IOW('d', 144, struct diocskerneldump_arg)
152 * Enable/Disable the device for kernel core dumps.
155 #endif /* _SYS_DISK_H_ */