sqlite Namespace Reference

Namespaces
	anonymous_namespace{sqlitevfs.cc}

Classes
struct	MemStatistics
class	Database
class	Sql

Enumerations
enum	VfsOptions { kVfsOptNone = 0, kVfsOptDefault }

Functions
static void	ApplyFdMap (VfsRdOnlyFile *pFile)
static int	VfsRdOnlyClose (sqlite3_file *pFile)
static int	VfsRdOnlyRead (sqlite3_file *pFile, void *zBuf, int iAmt, sqlite_int64 iOfst)
static int	VfsRdOnlyWrite (sqlite3_file *pFile __attribute__((unused)), const void *zBuf __attribute__((unused)), int iAmt __attribute__((unused)), sqlite_int64 iOfst __attribute__((unused)))
static int	VfsRdOnlyTruncate (sqlite3_file *pFile __attribute__((unused)), sqlite_int64 size __attribute__((unused)))
static int	VfsRdOnlySync (sqlite3_file *pFile __attribute__((unused)), int flags __attribute__((unused)))
static int	VfsRdOnlyFileSize (sqlite3_file *pFile, sqlite_int64 *pSize)
static int	VfsRdOnlyLock (sqlite3_file *p __attribute__((unused)), int level __attribute__((unused)))
static int	VfsRdOnlyUnlock (sqlite3_file *p __attribute__((unused)), int level __attribute__((unused)))
static int	VfsRdOnlyCheckReservedLock (sqlite3_file *p __attribute__((unused)), int *pResOut)
static int	VfsRdOnlyFileControl (sqlite3_file *p __attribute__((unused)), int op __attribute__((unused)), void *pArg __attribute__((unused)))
static int	VfsRdOnlySectorSize (sqlite3_file *p __attribute__((unused)))
static int	VfsRdOnlyDeviceCharacteristics (sqlite3_file *p __attribute__((unused)))
static int	VfsRdOnlyOpen (sqlite3_vfs *vfs, const char *zName, sqlite3_file *pFile, int flags, int *pOutFlags)
static int	VfsRdOnlyDelete (sqlite3_vfs *__attribute__((unused)), const char *zName __attribute__((unused)), int syncDir __attribute__((unused)))
static int	VfsRdOnlyAccess (sqlite3_vfs *vfs, const char *zPath, int flags, int *pResOut)
int	VfsRdOnlyFullPathname (sqlite3_vfs *vfs __attribute__((unused)), const char *zPath, int nOut, char *zOut)
static int	VfsRdOnlyRandomness (sqlite3_vfs *vfs, int nBuf, char *zBuf)
static int	VfsRdOnlySleep (sqlite3_vfs *vfs, int microseconds)
static int	VfsRdOnlyCurrentTimeInt64 (sqlite3_vfs *vfs, sqlite3_int64 *piNow)
static int	VfsRdOnlyCurrentTime (sqlite3_vfs *vfs, double *prNow)
static int	VfsRdOnlyGetLastError (sqlite3_vfs *vfs __attribute__((unused)), int not_used1 __attribute__((unused)), char *not_used2 __attribute__((unused)))
bool	RegisterVfsRdOnly (CacheManager *cache_mgr, perf::Statistics *statistics, const VfsOptions options)
bool	UnregisterVfsRdOnly ()
void	RegisterFdMapping (int from, int to)
void	ReplaceCacheManager (CacheManager *new_cache_mgr)

Detailed Description

This file is part of the CernVM file system.

Enumeration Type Documentation

enum sqlite::VfsOptions

Enumerator
kVfsOptNone
kVfsOptDefault

Definition at line 17 of file sqlitevfs.h.

Function Documentation

static void sqlite::ApplyFdMap ( VfsRdOnlyFile *  pFile )

static

Definition at line 96 of file sqlitevfs.cc.

Referenced by VfsRdOnlyClose(), and VfsRdOnlyRead().

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void sqlite::RegisterFdMapping	(	int	from,
		int	to
	)

After a reload, existing file catalog file descriptors might need a remap to the fd in the context of the restored cache manager.

Definition at line 541 of file sqlitevfs.cc.

Referenced by FileSystem::RemapCatalogFd().

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bool sqlite::RegisterVfsRdOnly	(	CacheManager *	cache_mgr,
		perf::Statistics *	statistics,
		const VfsOptions	options
	)

Can only be registered once.

Definition at line 453 of file sqlitevfs.cc.

Referenced by FileSystem::Create().

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void sqlite::ReplaceCacheManager

(

CacheManager *

new_cache_mgr

)

Definition at line 546 of file sqlitevfs.cc.

Referenced by FileSystem::ReplaceCacheManager().

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bool sqlite::UnregisterVfsRdOnly

(

)

If the file system was the default VFS, another default VFS is selected by SQlite randomly.

Definition at line 522 of file sqlitevfs.cc.

Referenced by FileSystem::~FileSystem().

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static int sqlite::VfsRdOnlyAccess ( sqlite3_vfs *  vfs, const char *  zPath, int  flags, int *  pResOut  )

static

Cvmfs r/o file catalogs cannot have a write-ahead log or a journal.

Definition at line 317 of file sqlitevfs.cc.

Referenced by RegisterVfsRdOnly().

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static int sqlite::VfsRdOnlyCheckReservedLock ( sqlite3_file *p   __attribute__(unused), int *  pResOut  )

static

Definition at line 199 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlyClose ( sqlite3_file *  pFile )

static

Definition at line 111 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlyCurrentTime ( sqlite3_vfs *  vfs, double *  prNow  )

static

Taken from unixCurrentTime

Definition at line 427 of file sqlitevfs.cc.

Referenced by RegisterVfsRdOnly().

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static int sqlite::VfsRdOnlyCurrentTimeInt64 ( sqlite3_vfs *  vfs, sqlite3_int64 *  piNow  )

static

Taken from unixCurrentTimeInt64()

Definition at line 407 of file sqlitevfs.cc.

Referenced by RegisterVfsRdOnly(), and VfsRdOnlyCurrentTime().

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static int sqlite::VfsRdOnlyDelete ( sqlite3_vfs *  __attribute__(unused), const char *zName   __attribute__(unused), int syncDir   __attribute__(unused)  )

static

Definition at line 305 of file sqlitevfs.cc.

Referenced by RegisterVfsRdOnly().

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static int sqlite::VfsRdOnlyDeviceCharacteristics ( sqlite3_file *p   __attribute__(unused) )

static

Only relevant for writing.

Definition at line 231 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlyFileControl ( sqlite3_file *p   __attribute__(unused), int op   __attribute__(unused), void *pArg   __attribute__(unused)  )

static

No xFileControl() verbs are implemented by this VFS.

Definition at line 211 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlyFileSize ( sqlite3_file *  pFile, sqlite_int64 *  pSize  )

static

Definition at line 176 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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int sqlite::VfsRdOnlyFullPathname	(	sqlite3_vfs *vfs	__attribute__(unused),
		const char *	zPath,
		int	nOut,
		char *	zOut
	)

Since the path is never stored, there is no need to produce a full path.

Definition at line 342 of file sqlitevfs.cc.

Referenced by RegisterVfsRdOnly().

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static int sqlite::VfsRdOnlyGetLastError ( sqlite3_vfs *vfs   __attribute__(unused), int not_used1   __attribute__(unused), char *not_used2   __attribute__(unused)  )

static

So far unused by sqlite.

Definition at line 441 of file sqlitevfs.cc.

Referenced by RegisterVfsRdOnly().

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static int sqlite::VfsRdOnlyLock ( sqlite3_file *p   __attribute__(unused), int level   __attribute__(unused)  )

static

Definition at line 183 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlyOpen ( sqlite3_vfs *  vfs, const char *  zName, sqlite3_file *  pFile, int  flags, int *  pOutFlags  )

static

Supports only read-only opens. The "file name" has to be in the form of '<file descriptor>', where file descriptor is usable by the cache manager.

Definition at line 242 of file sqlitevfs.cc.

Referenced by RegisterVfsRdOnly().

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static int sqlite::VfsRdOnlyRandomness ( sqlite3_vfs *  vfs, int  nBuf, char *  zBuf  )

static

Taken from unixRandomness

Definition at line 357 of file sqlitevfs.cc.

Referenced by RegisterVfsRdOnly().

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static int sqlite::VfsRdOnlyRead ( sqlite3_file *  pFile, void *  zBuf, int  iAmt, sqlite_int64  iOfst  )

static

On a short read, the remaining bytes must be zero'ed. TODO(jblomer): the reads seem to be rather small. Investigate buffered read.

Definition at line 127 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlySectorSize ( sqlite3_file *p   __attribute__(unused) )

static

A good unit of bytes to read at once. But probably only used for writes.

Definition at line 223 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlySleep ( sqlite3_vfs *  vfs, int  microseconds  )

static

Like SafeSleepMs, avoid conflict with the ALARM signal.

Definition at line 389 of file sqlitevfs.cc.

Referenced by RegisterVfsRdOnly().

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static int sqlite::VfsRdOnlySync ( sqlite3_file *pFile   __attribute__(unused), int flags   __attribute__(unused)  )

static

Definition at line 168 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlyTruncate ( sqlite3_file *pFile   __attribute__(unused), sqlite_int64 size   __attribute__(unused)  )

static

Definition at line 160 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlyUnlock ( sqlite3_file *p   __attribute__(unused), int level   __attribute__(unused)  )

static

Definition at line 191 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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static int sqlite::VfsRdOnlyWrite ( sqlite3_file *pFile   __attribute__(unused), const void *zBuf   __attribute__(unused), int iAmt   __attribute__(unused), sqlite_int64 iOfst   __attribute__(unused)  )

static

Definition at line 150 of file sqlitevfs.cc.

Referenced by VfsRdOnlyOpen().

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