/* * 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 */ /* features */ #define CONFIG_LIBFDISK_ASSERT #define CONFIG_LIBFDISK_DEBUG #ifdef CONFIG_LIBFDISK_ASSERT #include #endif /* * Debug */ #if defined(TEST_PROGRAM) && !defined(LIBFDISK_DEBUG) #define CONFIG_LIBFDISK_DEBUG #endif #ifdef CONFIG_LIBFDISK_DEBUG # include # include /* fdisk debugging flags/options */ #define FDISK_DEBUG_INIT (1 << 1) #define FDISK_DEBUG_CONTEXT (1 << 2) #define FDISK_DEBUG_TOPOLOGY (1 << 3) #define FDISK_DEBUG_GEOMETRY (1 << 4) #define FDISK_DEBUG_LABEL (1 << 5) #define FDISK_DEBUG_ALL 0xFFFF # define ON_DBG(m, x) do { \ if ((FDISK_DEBUG_ ## m) & fdisk_debug_mask) { \ x; \ } \ } while (0) # define DBG(m, x) do { \ if ((FDISK_DEBUG_ ## m) & fdisk_debug_mask) { \ fprintf(stderr, "%d: fdisk: %8s: ", getpid(), # m); \ x; \ } \ } while (0) # define DBG_FLUSH do { \ if (fdisk_debug_mask && \ fdisk_debug_mask != FDISK_DEBUG_INIT) \ fflush(stderr); \ } while(0) static inline void __attribute__ ((__format__ (__printf__, 1, 2))) dbgprint(const char *mesg, ...) { va_list ap; va_start(ap, mesg); vfprintf(stderr, mesg, ap); va_end(ap); fputc('\n', stderr); } extern int fdisk_debug_mask; #else /* !CONFIG_LIBFDISK_DEBUG */ # define ON_DBG(m,x) do { ; } while (0) # define DBG(m,x) do { ; } while (0) # define DBG_FLUSH do { ; } while(0) #endif typedef unsigned long long sector_t; /* * Partition types */ struct fdisk_parttype { unsigned int type; /* type as number or zero */ const char *name; /* description */ char *typestr; /* type as string or NULL */ unsigned int flags; /* FDISK_PARTTYPE_* flags */ }; enum { FDISK_PARTTYPE_UNKNOWN = (1 << 1), FDISK_PARTTYPE_INVISIBLE = (1 << 2), FDISK_PARTTYPE_ALLOCATED = (1 << 3) }; #define fdisk_parttype_is_unknown(_x) ((_x) && ((_x)->flags & FDISK_PARTTYPE_UNKNONW)) #define fdisk_parttype_is_invisible(_x) ((_x) && ((_x)->flags & FDISK_PARTTYPE_INVISIBLE)) #define fdisk_parttype_is_allocated(_x) ((_x) && ((_x)->flags & FDISK_PARTTYPE_ALLOCATED)) /* * Legacy CHS based geometry */ struct fdisk_geometry { unsigned int heads; sector_t sectors; sector_t cylinders; }; struct fdisk_context { int dev_fd; /* device descriptor */ char *dev_path; /* device path */ unsigned char *firstsector; /* buffer with master boot record */ /* 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; enum fdisk_labeltype disklabel; /* current disklabel */ /* alignment */ unsigned long grain; /* alignment unit */ sector_t first_lba; /* recommended begin of the first partition */ /* geometry */ sector_t total_sectors; /* in logical sectors */ struct fdisk_geometry geom; /* label operations and description */ const struct fdisk_label *label; }; /* * Label specific operations */ struct fdisk_label { const char *name; /* array with partition types */ struct fdisk_parttype *parttypes; size_t nparttypes; /* number of items in parttypes[] */ /* 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); /* new partition */ int (*part_add)(struct fdisk_context *cxt, int partnum, struct fdisk_parttype *t); /* delete partition */ int (*part_delete)(struct fdisk_context *cxt, int partnum); /* get partition type */ struct fdisk_parttype *(*part_get_type)(struct fdisk_context *cxt, int partnum); /* set partition type */ int (*part_set_type)(struct fdisk_context *cxt, int partnum, struct fdisk_parttype *t); /* refresh alignment setting */ int (*reset_alignment)(struct fdisk_context *cxt); }; /* alignment.c */ extern sector_t fdisk_topology_get_first_lba(struct fdisk_context *cxt); extern unsigned long fdisk_topology_get_grain(struct fdisk_context *cxt); extern void fdisk_warn_alignment(struct fdisk_context *cxt, sector_t lba, int partition); #define FDISK_ALIGN_UP 1 #define FDISK_ALIGN_DOWN 2 #define FDISK_ALIGN_NEAREST 3 extern sector_t fdisk_align_lba(struct fdisk_context *cxt, sector_t lba, int direction); extern sector_t fdisk_align_lba_in_range(struct fdisk_context *cxt, sector_t lba, sector_t start, sector_t stop); extern int fdisk_override_sector_size(struct fdisk_context *cxt, sector_t s); extern int fdisk_override_geometry(struct fdisk_context *cxt, unsigned int cylinders, unsigned int heads, unsigned int sectors); extern int fdisk_discover_geometry(struct fdisk_context *cxt); extern int fdisk_discover_topology(struct fdisk_context *cxt); /* utils.c */ extern void fdisk_zeroize_firstsector(struct fdisk_context *cxt); extern int fdisk_read_firstsector(struct fdisk_context *cxt); #endif /* _LIBFDISK_PRIVATE_H */