Differential D38987 Diff 119586 sys/fs/msdosfs/msdosfsmount.h

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sys/fs/msdosfs/msdosfsmount.h

Show First 20 Lines • Show All 102 Lines • ▼ Show 20 Lines	struct msdosfsmount {
u_long pm_fatblocksec; /* size of FAT blocks in sectors */		u_long pm_fatblocksec; /* size of FAT blocks in sectors */
u_long pm_fatsize; /* size of FAT in bytes */		u_long pm_fatsize; /* size of FAT in bytes */
uint32_t pm_fatmask; /* mask to use for FAT numbers */		uint32_t pm_fatmask; /* mask to use for FAT numbers */
u_long pm_fsinfo; /* fsinfo block number */		u_long pm_fsinfo; /* fsinfo block number */
u_long pm_nxtfree; /* next place to search for a free cluster */		u_long pm_nxtfree; /* next place to search for a free cluster */
u_int pm_fatmult; /* these 2 values are used in FAT */		u_int pm_fatmult; /* these 2 values are used in FAT */
u_int pm_fatdiv; /* offset computation */		u_int pm_fatdiv; /* offset computation */
u_int pm_curfat; /* current FAT for FAT32 (0 otherwise) */		u_int pm_curfat; /* current FAT for FAT32 (0 otherwise) */
		int pm_rootdirfree; /* number of free slots in FAT12/16 root directory */
u_int pm_inusemap; / ptr to bitmap of in-use clusters */		u_int pm_inusemap; / ptr to bitmap of in-use clusters */
uint64_t pm_flags; /* see below */		uint64_t pm_flags; /* see below */
void pm_u2w; / Local->Unicode iconv handle */		void pm_u2w; / Local->Unicode iconv handle */
void pm_w2u; / Unicode->Local iconv handle */		void pm_w2u; / Unicode->Local iconv handle */
void pm_u2d; / Unicode->DOS iconv handle */		void pm_u2d; / Unicode->DOS iconv handle */
void pm_d2u; / DOS->Local iconv handle */		void pm_d2u; / DOS->Local iconv handle */
#ifndef MAKEFS		#ifndef MAKEFS
		seAuthorUnsubmitted Done Inline Actions This could also be an int or u:_int. The acceptable range is 0..65535. se: This could also be an int or u:_int. The acceptable range is 0..65535.
		seAuthorUnsubmitted Done Inline Actions The type of pm_rootdirfree should be int to allow -1 to be returned as an error indicator. se: The type of pm_rootdirfree should be int to allow -1 to be returned as an error indicator.
struct lock pm_fatlock; /* lockmgr protecting allocations */		struct lock pm_fatlock; /* lockmgr protecting allocations */
struct lock pm_checkpath_lock; /* protects doscheckpath result */		struct lock pm_checkpath_lock; /* protects doscheckpath result */
struct task pm_rw2ro_task; /* context for emergency remount ro */		struct task pm_rw2ro_task; /* context for emergency remount ro */
#endif		#endif
};		};

/*		/*
* A 64-bit file number and the 32-bit file number to which it is mapped,		* A 64-bit file number and the 32-bit file number to which it is mapped,
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/*		/*
* Calculate block number for directory entry at cluster dirclu, offset		* Calculate block number for directory entry at cluster dirclu, offset
* dirofs		* dirofs
*/		*/
#define detobn(pmp, dirclu, dirofs) \		#define detobn(pmp, dirclu, dirofs) \
((dirclu) == MSDOSFSROOT \		((dirclu) == MSDOSFSROOT \
? roottobn((pmp), (dirofs)) \		? roottobn((pmp), (dirofs)) \
: cntobn((pmp), (dirclu)))		: cntobn((pmp), (dirclu)))

		/*
		seAuthorUnsubmitted Done Inline Actions The comment is wrong and applies to a prior version of the patch: the number of free entries is counted (here and in the macro below), se: The comment is wrong and applies to a prior version of the patch: the number of free entries is…
		seAuthorUnsubmitted Done Inline Actions The comment needs to be fixed - has been forgotten when I prepared the latest patch. se: The comment needs to be fixed - has been forgotten when I prepared the latest patch.
		* Increment the number of used entries in a fixed size FAT12/16 root
		* directory
		*/
		#define rootde_alloced(dep) \
		if ((dep)->de_StartCluster == MSDOSFSROOT) \
		(dep)->de_pmp->pm_rootdirfree--;

		/*
		* Decrement the number of used entries in a fixed size FAT12/16 root
		* directory
		*/
		#define rootde_freed(dep) \
		if ((dep)->de_StartCluster == MSDOSFSROOT) \
		(dep)->de_pmp->pm_rootdirfree++;

#define MSDOSFS_LOCK_MP(pmp) \		#define MSDOSFS_LOCK_MP(pmp) \
lockmgr(&(pmp)->pm_fatlock, LK_EXCLUSIVE, NULL)		lockmgr(&(pmp)->pm_fatlock, LK_EXCLUSIVE, NULL)
#define MSDOSFS_UNLOCK_MP(pmp) \		#define MSDOSFS_UNLOCK_MP(pmp) \
lockmgr(&(pmp)->pm_fatlock, LK_RELEASE, NULL)		lockmgr(&(pmp)->pm_fatlock, LK_RELEASE, NULL)
#define MSDOSFS_ASSERT_MP_LOCKED(pmp) \		#define MSDOSFS_ASSERT_MP_LOCKED(pmp) \
lockmgr_assert(&(pmp)->pm_fatlock, KA_XLOCKED)		lockmgr_assert(&(pmp)->pm_fatlock, KA_XLOCKED)

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