/* * fdiskP.h - private library header file * * Copyright (C) 2012 Karel Zak * * This file may be redistributed under the terms of the * GNU Lesser General Public License. */ #ifndef _LIBFDISK_PRIVATE_H #define _LIBFDISK_PRIVATE_H #include #include #include #include #include #include #include "c.h" #include "libfdisk.h" #include "nls.h" /* temporary before dialog API will be implamented */ #include "list.h" #include "debug.h" #include #include /* features */ #define CONFIG_LIBFDISK_ASSERT #ifdef CONFIG_LIBFDISK_ASSERT #include #endif /* * Debug */ #define FDISK_DEBUG_INIT (1 << 1) #define FDISK_DEBUG_CXT (1 << 2) #define FDISK_DEBUG_LABEL (1 << 3) #define FDISK_DEBUG_ASK (1 << 4) #define FDISK_DEBUG_FRONTEND (1 << 5) #define FDISK_DEBUG_PART (1 << 6) #define FDISK_DEBUG_PARTTYPE (1 << 7) #define FDISK_DEBUG_TAB (1 << 8) #define FDISK_DEBUG_SCRIPT (1 << 9) #define FDISK_DEBUG_ALL 0xFFFF UL_DEBUG_DECLARE_MASK(libfdisk); #define DBG(m, x) __UL_DBG(libfdisk, FDISK_DEBUG_, m, x) #define ON_DBG(m, x) __UL_DBG_CALL(libfdisk, FDISK_DEBUG_, m, x) #define DBG_FLUSH __UL_DBG_FLUSH(libfdisk, FDISK_DEBUG_) #ifdef TEST_PROGRAM struct fdisk_test { const char *name; int (*body)(struct fdisk_test *ts, int argc, char *argv[]); const char *usage; }; /* test.c */ extern int fdisk_run_test(struct fdisk_test *tests, int argc, char *argv[]); #endif /* * Generic iterator */ struct fdisk_iter { struct list_head *p; /* current position */ struct list_head *head; /* start position */ int direction; /* FDISK_ITER_{FOR,BACK}WARD */ }; #define IS_ITER_FORWARD(_i) ((_i)->direction == FDISK_ITER_FORWARD) #define IS_ITER_BACKWARD(_i) ((_i)->direction == FDISK_ITER_BACKWARD) #define FDISK_ITER_INIT(itr, list) \ do { \ (itr)->p = IS_ITER_FORWARD(itr) ? \ (list)->next : (list)->prev; \ (itr)->head = (list); \ } while(0) #define FDISK_ITER_ITERATE(itr, res, restype, member) \ do { \ res = list_entry((itr)->p, restype, member); \ (itr)->p = IS_ITER_FORWARD(itr) ? \ (itr)->p->next : (itr)->p->prev; \ } while(0) /* * Partition types */ struct fdisk_parttype { unsigned int code; /* type as number or zero */ char *name; /* description */ char *typestr; /* type as string or NULL */ unsigned int flags; /* FDISK_PARTTYPE_* flags */ int refcount; /* reference counter for allocated types */ }; enum { FDISK_PARTTYPE_UNKNOWN = (1 << 1), FDISK_PARTTYPE_INVISIBLE = (1 << 2), FDISK_PARTTYPE_ALLOCATED = (1 << 3) }; #define fdisk_parttype_is_invisible(_x) ((_x) && ((_x)->flags & FDISK_PARTTYPE_INVISIBLE)) #define fdisk_parttype_is_allocated(_x) ((_x) && ((_x)->flags & FDISK_PARTTYPE_ALLOCATED)) struct fdisk_partition { int refcount; /* reference counter */ size_t partno; /* partition number */ size_t parent_partno; /* for logical partitions */ uint64_t start; /* first sectors */ uint64_t end; /* last sector */ uint64_t size; /* size in sectors */ char *name; /* partition name */ char *uuid; /* partition UUID */ char *attrs; /* partition flags/attributes converted to string */ struct fdisk_parttype *type; /* partition type */ struct list_head parts; /* list of partitions */ /* extra fields for partition_to_string() */ char start_post; /* start postfix (e.g. '+') */ char end_post; /* end postfix */ char size_post; /* size postfix */ uint64_t fsize; /* bsd junk */ uint64_t bsize; uint64_t cpg; char *start_chs; /* start C/H/S in string */ char *end_chs; /* end C/H/S in string */ unsigned int boot; /* MBR: bootable */ unsigned int container : 1, /* container partition (e.g. extended partition) */ end_follow_default : 1, /* use default end */ freespace : 1, /* this is free space */ partno_follow_default : 1, /* use default partno */ size_explicit : 1, /* don't align the size */ start_follow_default : 1, /* use default start */ used : 1, /* partition already used */ wholedisk : 1; /* special system partition */ }; #define FDISK_INIT_UNDEF(_x) ((_x) = (__typeof__(_x)) -1) #define FDISK_IS_UNDEF(_x) ((_x) == (__typeof__(_x)) -1) struct fdisk_table { struct list_head parts; /* partitions */ int refcount; size_t nents; /* number of partitions */ }; /* * Legacy CHS based geometry */ struct fdisk_geometry { unsigned int heads; sector_t sectors; sector_t cylinders; }; /* * Label specific operations */ struct fdisk_label_operations { /* probe disk label */ int (*probe)(struct fdisk_context *cxt); /* write in-memory changes to disk */ int (*write)(struct fdisk_context *cxt); /* verify the partition table */ int (*verify)(struct fdisk_context *cxt); /* create new disk label */ int (*create)(struct fdisk_context *cxt); /* list disklabel details */ int (*list)(struct fdisk_context *cxt); /* returns offset and size of the 'n' part of the PT */ int (*locate)(struct fdisk_context *cxt, int n, const char **name, off_t *offset, size_t *size); /* reorder partitions */ int (*reorder)(struct fdisk_context *cxt); /* get disk label ID */ int (*get_id)(struct fdisk_context *cxt, char **id); /* set disk label ID */ int (*set_id)(struct fdisk_context *cxt); /* new partition */ int (*add_part)(struct fdisk_context *cxt, struct fdisk_partition *pa, size_t *partno); /* delete partition */ int (*del_part)(struct fdisk_context *cxt, size_t partnum); /* fill in partition struct */ int (*get_part)(struct fdisk_context *cxt, size_t n, struct fdisk_partition *pa); /* modify partition */ int (*set_part)(struct fdisk_context *cxt, size_t n, struct fdisk_partition *pa); /* return state of the partition */ int (*part_is_used)(struct fdisk_context *cxt, size_t partnum); int (*part_toggle_flag)(struct fdisk_context *cxt, size_t i, unsigned long flag); /* refresh alignment setting */ int (*reset_alignment)(struct fdisk_context *cxt); /* free in-memory label stuff */ void (*free)(struct fdisk_label *lb); /* deinit in-memory label stuff */ void (*deinit)(struct fdisk_label *lb); }; /* * The fields describes how to display libfdisk_partition */ struct fdisk_field { int id; /* FDISK_FIELD_* */ const char *name; /* field name */ double width; /* field width (compatible with libsmartcols whint) */ int flags; /* FDISK_FIELDFL_* */ }; /* note that the defauls is to display a column always */ enum { FDISK_FIELDFL_DETAIL = (1 << 1), /* only display if fdisk_is_details() */ FDISK_FIELDFL_EYECANDY = (1 << 2), /* don't display if fdisk_is_details() */ FDISK_FIELDFL_NUMBER = (1 << 3), /* column display numbers */ }; /* * Generic label */ struct fdisk_label { const char *name; /* label name */ enum fdisk_labeltype id; /* FDISK_DISKLABEL_* */ struct fdisk_parttype *parttypes; /* supported partitions types */ size_t nparttypes; /* number of items in parttypes[] */ size_t nparts_max; /* maximal number of partitions */ size_t nparts_cur; /* number of currently used partitions */ int flags; /* FDISK_LABEL_FL_* flags */ unsigned int changed:1, /* label has been modified */ disabled:1; /* this driver is disabled at all */ const struct fdisk_field *fields; /* all possible fields */ size_t nfields; const struct fdisk_label_operations *op; }; /* label driver flags */ enum { FDISK_LABEL_FL_REQUIRE_GEOMETRY = (1 << 2), FDISK_LABEL_FL_INCHARS_PARTNO = (1 << 3) }; /* label allocators */ extern struct fdisk_label *fdisk_new_gpt_label(struct fdisk_context *cxt); extern struct fdisk_label *fdisk_new_dos_label(struct fdisk_context *cxt); extern struct fdisk_label *fdisk_new_bsd_label(struct fdisk_context *cxt); extern struct fdisk_label *fdisk_new_sgi_label(struct fdisk_context *cxt); extern struct fdisk_label *fdisk_new_sun_label(struct fdisk_context *cxt); struct ask_menuitem { char key; const char *name; const char *desc; struct ask_menuitem *next; }; /* fdisk dialog -- note that nothing from this stuff will be directly exported, * we will have get/set() function for everything. */ struct fdisk_ask { int type; /* FDISK_ASKTYPE_* */ char *query; unsigned int flags; union { /* FDISK_ASKTYPE_{NUMBER,OFFSET} */ struct ask_number { uint64_t hig; /* high limit */ uint64_t low; /* low limit */ uint64_t dfl; /* default */ uint64_t result; uint64_t base; /* for relative results */ uint64_t unit; /* unit for offsets */ const char *range; /* by library generated list */ unsigned int relative :1, inchars :1; } num; /* FDISK_ASKTYPE_{WARN,WARNX,..} */ struct ask_print { const char *mesg; int errnum; /* errno */ } print; /* FDISK_ASKTYPE_YESNO */ struct ask_yesno { int result; /* TRUE or FALSE */ } yesno; /* FDISK_ASKTYPE_STRING */ struct ask_string { char *result; /* allocated */ } str; /* FDISK_ASKTYPE_MENU */ struct ask_menu { int dfl; /* default meni item */ int result; struct ask_menuitem *first; } menu; } data; }; struct fdisk_context { int dev_fd; /* device descriptor */ char *dev_path; /* device path */ int refcount; unsigned char *firstsector; /* buffer with master boot record */ unsigned long firstsector_bufsz; /* topology */ unsigned long io_size; /* I/O size used by fdisk */ unsigned long optimal_io_size; /* optional I/O returned by device */ unsigned long min_io_size; /* minimal I/O size */ unsigned long phy_sector_size; /* physical size */ unsigned long sector_size; /* logical size */ unsigned long alignment_offset; unsigned int readonly : 1, /* don't write to the device */ display_in_cyl_units : 1, /* for obscure labels */ display_details : 1, /* expert display mode */ listonly : 1; /* list partition, nothing else */ /* alignment */ unsigned long grain; /* alignment unit */ sector_t first_lba; /* recommended begin of the first partition */ sector_t last_lba; /* recomennded end of last partition */ /* geometry */ sector_t total_sectors; /* in logical sectors */ struct fdisk_geometry geom; /* user setting to overwrite device default */ struct fdisk_geometry user_geom; unsigned long user_pyh_sector; unsigned long user_log_sector; struct fdisk_label *label; /* current label, pointer to labels[] */ size_t nlabels; /* number of initialized label drivers */ struct fdisk_label *labels[8]; /* all supported labels, * FIXME: use any enum rather than hardcoded number */ int (*ask_cb)(struct fdisk_context *, struct fdisk_ask *, void *); /* fdisk dialogs callback */ void *ask_data; /* ask_cb() data */ struct fdisk_context *parent; /* for nested PT */ struct fdisk_script *script; /* what we want to follow */ }; /* partition.c */ int fdisk_partition_next_partno(struct fdisk_partition *pa, struct fdisk_context *cxt, size_t *n); /* context.c */ extern int __fdisk_switch_label(struct fdisk_context *cxt, struct fdisk_label *lb); extern int fdisk_missing_geometry(struct fdisk_context *cxt); /* alignment.c */ sector_t fdisk_scround(struct fdisk_context *cxt, sector_t num); sector_t fdisk_cround(struct fdisk_context *cxt, sector_t num); extern int fdisk_discover_geometry(struct fdisk_context *cxt); extern int fdisk_discover_topology(struct fdisk_context *cxt); extern int fdisk_apply_user_device_properties(struct fdisk_context *cxt); extern void fdisk_zeroize_device_properties(struct fdisk_context *cxt); /* utils.c */ extern int fdisk_init_firstsector_buffer(struct fdisk_context *cxt); extern int fdisk_read_firstsector(struct fdisk_context *cxt); extern char *fdisk_partname(const char *dev, size_t partno); /* label.c */ extern int fdisk_probe_labels(struct fdisk_context *cxt); extern void fdisk_deinit_label(struct fdisk_label *lb); /* ask.c */ extern int fdisk_info_new_partition( struct fdisk_context *cxt, int num, sector_t start, sector_t stop, struct fdisk_parttype *t); #endif /* _LIBFDISK_PRIVATE_H */