Update blkid to 2.25.0
Break libblkid into 4 libraries: libblkid, libuuid, libutil-linux and libfdisk. This should help in later patch updates. Change-Id: I680d9a7feb031e5c29a603e9c58aff4b65826262
This commit is contained in:
bigbiff
Dees Troy
@@ -0,0 +1,193 @@
|
||||
#ifndef UTIL_LINUX_LOOPDEV_H
|
||||
#define UTIL_LINUX_LOOPDEV_H
|
||||
|
||||
#include "sysfs.h"
|
||||
|
||||
/*
|
||||
* loop_info.lo_encrypt_type
|
||||
*/
|
||||
#define LO_CRYPT_NONE 0
|
||||
#define LO_CRYPT_XOR 1
|
||||
#define LO_CRYPT_DES 2
|
||||
#define LO_CRYPT_CRYPTOAPI 18
|
||||
|
||||
#define LOOP_SET_FD 0x4C00
|
||||
#define LOOP_CLR_FD 0x4C01
|
||||
/*
|
||||
* Obsolete (kernel < 2.6)
|
||||
*
|
||||
* #define LOOP_SET_STATUS 0x4C02
|
||||
* #define LOOP_GET_STATUS 0x4C03
|
||||
*/
|
||||
#define LOOP_SET_STATUS64 0x4C04
|
||||
#define LOOP_GET_STATUS64 0x4C05
|
||||
/* #define LOOP_CHANGE_FD 0x4C06 */
|
||||
#define LOOP_SET_CAPACITY 0x4C07
|
||||
|
||||
/* /dev/loop-control interface */
|
||||
#ifndef LOOP_CTL_ADD
|
||||
# define LOOP_CTL_ADD 0x4C80
|
||||
# define LOOP_CTL_REMOVE 0x4C81
|
||||
# define LOOP_CTL_GET_FREE 0x4C82
|
||||
#endif
|
||||
|
||||
/*
|
||||
* loop_info.lo_flags
|
||||
*/
|
||||
enum {
|
||||
LO_FLAGS_READ_ONLY = 1,
|
||||
LO_FLAGS_USE_AOPS = 2,
|
||||
LO_FLAGS_AUTOCLEAR = 4, /* kernel >= 2.6.25 */
|
||||
LO_FLAGS_PARTSCAN = 8, /* kernel >= 3.2 */
|
||||
};
|
||||
|
||||
#define LO_NAME_SIZE 64
|
||||
#define LO_KEY_SIZE 32
|
||||
|
||||
/*
|
||||
* Linux LOOP_{SET,GET}_STATUS64 ioctl struct
|
||||
*/
|
||||
struct loop_info64 {
|
||||
uint64_t lo_device;
|
||||
uint64_t lo_inode;
|
||||
uint64_t lo_rdevice;
|
||||
uint64_t lo_offset;
|
||||
uint64_t lo_sizelimit; /* bytes, 0 == max available */
|
||||
uint32_t lo_number;
|
||||
uint32_t lo_encrypt_type;
|
||||
uint32_t lo_encrypt_key_size;
|
||||
uint32_t lo_flags;
|
||||
uint8_t lo_file_name[LO_NAME_SIZE];
|
||||
uint8_t lo_crypt_name[LO_NAME_SIZE];
|
||||
uint8_t lo_encrypt_key[LO_KEY_SIZE];
|
||||
uint64_t lo_init[2];
|
||||
};
|
||||
|
||||
#define LOOPDEV_MAJOR 7 /* loop major number */
|
||||
#define LOOPDEV_DEFAULT_NNODES 8 /* default number of loop devices */
|
||||
|
||||
struct loopdev_iter {
|
||||
FILE *proc; /* /proc/partitions */
|
||||
DIR *sysblock; /* /sys/block */
|
||||
int ncur; /* current position */
|
||||
int *minors; /* ary of minor numbers (when scan whole /dev) */
|
||||
int nminors; /* number of items in *minors */
|
||||
int ct_perm; /* count permission problems */
|
||||
int ct_succ; /* count number of detected devices */
|
||||
|
||||
unsigned int done:1; /* scanning done */
|
||||
unsigned int default_check:1;/* check first LOOPDEV_NLOOPS */
|
||||
int flags; /* LOOPITER_FL_* flags */
|
||||
};
|
||||
|
||||
enum {
|
||||
LOOPITER_FL_FREE = (1 << 0),
|
||||
LOOPITER_FL_USED = (1 << 1)
|
||||
};
|
||||
|
||||
/*
|
||||
* handler for work with loop devices
|
||||
*/
|
||||
struct loopdev_cxt {
|
||||
char device[128]; /* device path (e.g. /dev/loop<N>) */
|
||||
char *filename; /* backing file for loopcxt_set_... */
|
||||
int fd; /* open(/dev/looo<N>) */
|
||||
int mode; /* fd mode O_{RDONLY,RDWR} */
|
||||
|
||||
int flags; /* LOOPDEV_FL_* flags */
|
||||
unsigned int has_info:1; /* .info contains data */
|
||||
unsigned int extra_check:1; /* unusual stuff for iterator */
|
||||
unsigned int info_failed:1; /* LOOP_GET_STATUS ioctl failed */
|
||||
unsigned int control_ok:1; /* /dev/loop-control success */
|
||||
|
||||
struct sysfs_cxt sysfs; /* pointer to /sys/dev/block/<maj:min>/ */
|
||||
struct loop_info64 info; /* for GET/SET ioctl */
|
||||
struct loopdev_iter iter; /* scans /sys or /dev for used/free devices */
|
||||
};
|
||||
|
||||
#define UL_LOOPDEVCXT_EMPTY { .fd = -1, .sysfs = UL_SYSFSCXT_EMPTY }
|
||||
|
||||
/*
|
||||
* loopdev_cxt.flags
|
||||
*/
|
||||
enum {
|
||||
LOOPDEV_FL_RDONLY = (1 << 0), /* open(/dev/loop) mode; default */
|
||||
LOOPDEV_FL_RDWR = (1 << 1), /* necessary for loop setup only */
|
||||
LOOPDEV_FL_OFFSET = (1 << 4),
|
||||
LOOPDEV_FL_NOSYSFS = (1 << 5),
|
||||
LOOPDEV_FL_NOIOCTL = (1 << 6),
|
||||
LOOPDEV_FL_DEVSUBDIR = (1 << 7),
|
||||
LOOPDEV_FL_CONTROL = (1 << 8), /* system with /dev/loop-control */
|
||||
LOOPDEV_FL_SIZELIMIT = (1 << 9)
|
||||
};
|
||||
|
||||
/*
|
||||
* High-level
|
||||
*/
|
||||
extern int loopmod_supports_partscan(void);
|
||||
|
||||
extern int is_loopdev(const char *device);
|
||||
extern int loopdev_is_autoclear(const char *device);
|
||||
|
||||
extern char *loopdev_get_backing_file(const char *device);
|
||||
extern int loopdev_is_used(const char *device, const char *filename,
|
||||
uint64_t offset, int flags);
|
||||
extern char *loopdev_find_by_backing_file(const char *filename,
|
||||
uint64_t offset, int flags);
|
||||
extern int loopcxt_find_unused(struct loopdev_cxt *lc);
|
||||
extern int loopdev_delete(const char *device);
|
||||
extern int loopdev_count_by_backing_file(const char *filename, char **loopdev);
|
||||
|
||||
/*
|
||||
* Low-level
|
||||
*/
|
||||
extern int loopcxt_init(struct loopdev_cxt *lc, int flags)
|
||||
__attribute__ ((warn_unused_result));
|
||||
extern void loopcxt_deinit(struct loopdev_cxt *lc);
|
||||
|
||||
extern int loopcxt_set_device(struct loopdev_cxt *lc, const char *device)
|
||||
__attribute__ ((warn_unused_result));
|
||||
extern int loopcxt_has_device(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_add_device(struct loopdev_cxt *lc);
|
||||
extern char *loopcxt_strdup_device(struct loopdev_cxt *lc);
|
||||
extern const char *loopcxt_get_device(struct loopdev_cxt *lc);
|
||||
extern struct sysfs_cxt *loopcxt_get_sysfs(struct loopdev_cxt *lc);
|
||||
extern struct loop_info64 *loopcxt_get_info(struct loopdev_cxt *lc);
|
||||
|
||||
extern int loopcxt_get_fd(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_set_fd(struct loopdev_cxt *lc, int fd, int mode);
|
||||
|
||||
extern int loopcxt_init_iterator(struct loopdev_cxt *lc, int flags);
|
||||
extern int loopcxt_deinit_iterator(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_next(struct loopdev_cxt *lc);
|
||||
|
||||
extern int loopcxt_setup_device(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_delete_device(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_set_capacity(struct loopdev_cxt *lc);
|
||||
|
||||
int loopcxt_set_offset(struct loopdev_cxt *lc, uint64_t offset);
|
||||
int loopcxt_set_sizelimit(struct loopdev_cxt *lc, uint64_t sizelimit);
|
||||
int loopcxt_set_flags(struct loopdev_cxt *lc, uint32_t flags);
|
||||
int loopcxt_set_backing_file(struct loopdev_cxt *lc, const char *filename);
|
||||
|
||||
extern char *loopcxt_get_backing_file(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_get_backing_devno(struct loopdev_cxt *lc, dev_t *devno);
|
||||
extern int loopcxt_get_backing_inode(struct loopdev_cxt *lc, ino_t *ino);
|
||||
extern int loopcxt_get_offset(struct loopdev_cxt *lc, uint64_t *offset);
|
||||
extern int loopcxt_get_sizelimit(struct loopdev_cxt *lc, uint64_t *size);
|
||||
extern int loopcxt_get_encrypt_type(struct loopdev_cxt *lc, uint32_t *type);
|
||||
extern const char *loopcxt_get_crypt_name(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_is_autoclear(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_is_readonly(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_is_partscan(struct loopdev_cxt *lc);
|
||||
extern int loopcxt_find_by_backing_file(struct loopdev_cxt *lc,
|
||||
const char *filename,
|
||||
uint64_t offset, int flags);
|
||||
|
||||
extern int loopcxt_is_used(struct loopdev_cxt *lc,
|
||||
struct stat *st,
|
||||
const char *backing_file,
|
||||
uint64_t offset,
|
||||
int flags);
|
||||
|
||||
#endif /* UTIL_LINUX_LOOPDEV_H */
|
||||
Reference in New Issue
Block a user