fs_io.cc File Reference

#include "squid.h"
#include "comm/Loops.h"
#include "fd.h"
#include "fde.h"
#include "fs_io.h"
#include "globals.h"
#include "MemBuf.h"
#include "StatCounters.h"
#include <cerrno>

Include dependency graph for fs_io.cc:

Go to the source code of this file.

Macros
#define	fsbtoblk(num, fsbs, bs)

Functions
static void	cxx_xfree (void *ptr)
int	file_open (const char *path, int mode)
void	file_close (int fd)
static void	diskCombineWrites (_fde_disk *fdd)
static void	diskHandleWrite (int fd, void *)
void	file_write (int fd, off_t file_offset, void const *ptr_to_buf, int len, DWCB *handle, void *handle_data, FREE *free_func)
void	file_write_mbuf (int fd, off_t off, MemBuf mb, DWCB *handler, void *handler_data)
static void	diskHandleRead (int fd, void *data)
void	file_read (int fd, char *buf, int req_len, off_t offset, DRCB *handler, void *client_data)
void	safeunlink (const char *s, int quiet)
bool	FileRename (const SBuf &from, const SBuf &to)
int	fsBlockSize (const char *path, int *blksize)
int	fsStats (const char *path, int *totl_kb, int *free_kb, int *totl_in, int *free_in)

Variables
static PF	diskHandleRead
static PF	diskHandleWrite

Macro Definition Documentation

fsbtoblk

#define fsbtoblk	(		num,
			fsbs,
			bs
	)

Value:

    (((fsbs) != 0 && (fsbs) < (bs)) ? \
            (num) / ((bs) / (fsbs)) : (num) * ((fsbs) / (bs)))

Definition at line 523 of file fs_io.cc.

Function Documentation

cxx_xfree()

static void cxx_xfree ( void *  ptr )

static

Definition at line 35 of file fs_io.cc.

References xfree.

Referenced by diskCombineWrites().

diskCombineWrites()

static void diskCombineWrites ( _fde_disk *  fdd )

static

Definition at line 127 of file fs_io.cc.

References dwrite_q::buf, dwrite_q::buf_offset, cxx_xfree(), dwrite_q::free_func, dwrite_q::len, MEM_DWRITE_Q, memAllocate(), memFree(), dwrite_q::next, _fde_disk::write_q, _fde_disk::write_q_tail, and xmalloc.

Referenced by diskHandleWrite().

diskHandleRead()

static void diskHandleRead ( int  fd, void *  data  )

static

Definition at line 381 of file fs_io.cc.

References dread_ctrl::buf, cbdataReferenceDone, cbdataReferenceValid(), dread_ctrl::client_data, COMM_SELECT_READ, DBG_IMPORTANT, debugs, StatCounters::disk, DISK_EOF, DISK_ERROR, DISK_OK, diskHandleRead, F(), fd_bytes(), FD_READ, FD_READ_METHOD(), fd_table, dread_ctrl::handler, ignoreErrno(), MEM_DREAD_CTRL, memFree(), dread_ctrl::offset, StatCounters::reads, dread_ctrl::req_len, StatCounters::seeks, Comm::SetSelect(), statCounter, StatCounters::syscalls, and xstrerr().

diskHandleWrite()

static void diskHandleWrite ( int  fd, void *    )

static

Definition at line 175 of file fs_io.cc.

References assert, dwrite_q::buf, dwrite_q::buf_offset, cbdataReferenceValidDone, COMM_SELECT_WRITE, DBG_IMPORTANT, debugs, StatCounters::disk, DISK_ERROR, DISK_NO_SPACE_LEFT, DISK_OK, diskCombineWrites(), diskHandleWrite, do_close(), F(), fatal(), fd_bytes(), fd_table, FD_WRITE, FD_WRITE_METHOD(), file_close(), dwrite_q::file_offset, dwrite_q::free_func, ignoreErrno(), dwrite_q::len, MEM_DWRITE_Q, memFree(), dwrite_q::next, Comm::SetSelect(), statCounter, StatCounters::syscalls, _fde_disk::write_q, _fde_disk::write_q_tail, StatCounters::writes, _fde_disk::wrt_handle, _fde_disk::wrt_handle_data, and xstrerr().

file_close()

void file_close

(

int

fd

)

Definition at line 73 of file fs_io.cc.

References assert, StatCounters::closes, debugs, StatCounters::disk, diskHandleWrite, F(), fd_close(), fd_table, statCounter, and StatCounters::syscalls.

Referenced by Rock::Rebuild::~Rebuild(), Fs::Ufs::UFSSwapDir::~UFSSwapDir(), Fs::Ufs::UFSSwapDir::closeLog(), Fs::Ufs::UFSSwapDir::closeTmpSwapLog(), DiskerClose(), diskHandleWrite(), BlockingFile::doClose(), DiskThreadsDiskFile::doClose(), MmappedFile::doClose(), MimeIcon::load(), TemplateFile::loadFromFile(), logfile_mod_stdio_close(), logfile_mod_stdio_rotate(), logfile_mod_udp_close(), netdbReloadState(), Fs::Ufs::UFSSwapDir::openTmpSwapLog(), Fs::Ufs::RebuildState::rebuildFromDirectory(), UFSCleanLog::write(), and Fs::Ufs::UFSSwapDir::writeCleanDone().

file_open()

int file_open	(	const char *	path,
		int	mode
	)

Definition at line 45 of file fs_io.cc.

References commSetCloseOnExec(), debugs, StatCounters::disk, DISK_ERROR, FD_FILE, fd_open(), FILE_MODE, StatCounters::opens, statCounter, StatCounters::syscalls, and xstrerr().

Referenced by Fs::Ufs::UFSSwapDir::closeTmpSwapLog(), DiskThreadsDiskFile::create(), DiskerOpen(), Fs::Ufs::RebuildState::getNextFile(), MimeIcon::load(), TemplateFile::loadFromFile(), logfile_mod_stdio_open(), logfile_mod_stdio_rotate(), netdbReloadState(), BlockingFile::open(), DiskThreadsDiskFile::open(), MmappedFile::open(), Fs::Ufs::UFSSwapDir::openLog(), Fs::Ufs::UFSSwapDir::openTmpSwapLog(), Rock::Rebuild::start(), Fs::Ufs::UFSSwapDir::writeCleanDone(), and Fs::Ufs::UFSSwapDir::writeCleanStart().

file_read()

void file_read	(	int	fd,
		char *	buf,
		int	req_len,
		off_t	offset,
		DRCB *	handler,
		void *	client_data
	)

Definition at line 453 of file fs_io.cc.

References assert, dread_ctrl::buf, cbdataReference, dread_ctrl::client_data, diskHandleRead, dread_ctrl::end_of_file, dread_ctrl::fd, dread_ctrl::handler, handler(), MEM_DREAD_CTRL, memAllocate(), dread_ctrl::offset, and dread_ctrl::req_len.

Referenced by BlockingFile::read(), and DiskThreadsDiskFile::read().

file_write()

void file_write	(	int	fd,
		off_t	file_offset,
		void const *	ptr_to_buf,
		int	len,
		DWCB *	handle,
		void *	handle_data,
		FREE *	free_func
	)

Definition at line 326 of file fs_io.cc.

References assert, dwrite_q::buf, dwrite_q::buf_offset, cbdataReference, diskHandleWrite, F(), fd_table, dwrite_q::file_offset, dwrite_q::free_func, handle, dwrite_q::len, MEM_DWRITE_Q, memAllocate(), and dwrite_q::next.

Referenced by file_write_mbuf(), Fs::Ufs::UFSSwapDir::logEntry(), Fs::Ufs::UFSSwapDir::openTmpSwapLog(), BlockingFile::write(), and DiskThreadsDiskFile::write().

file_write_mbuf()

void file_write_mbuf	(	int	fd,
		off_t	off,
		MemBuf	mb,
		DWCB *	handler,
		void *	handler_data
	)

Definition at line 374 of file fs_io.cc.

References MemBuf::buf, file_write(), MemBuf::freeFunc(), handler(), and MemBuf::size.

FileRename()

bool FileRename	(	const SBuf &	from,
		const SBuf &	to
	)

Definition at line 480 of file fs_io.cc.

References SBuf::c_str(), DBG_IMPORTANT, debugs, SBuf::length(), SBuf::rawContent(), and xstrerr().

Referenced by Fs::Ufs::UFSSwapDir::closeTmpSwapLog(), logfile_mod_stdio_rotate(), and Fs::Ufs::UFSSwapDir::writeCleanDone().

fsBlockSize()

int fsBlockSize	(	const char *	path,
		int *	blksize
	)

Definition at line 503 of file fs_io.cc.

References DBG_IMPORTANT, debugs, statvfs::f_frsize, int, xstatvfs(), and xstrerr().

Referenced by Fs::Ufs::UFSSwapDir::init().

fsStats()

int fsStats	(	const char *	path,
		int *	totl_kb,
		int *	free_kb,
		int *	totl_in,
		int *	free_in
	)

Definition at line 527 of file fs_io.cc.

References DBG_IMPORTANT, debugs, statvfs::f_bfree, statvfs::f_blocks, statvfs::f_ffree, statvfs::f_files, statvfs::f_frsize, fsbtoblk, int, xstatvfs(), and xstrerr().

Referenced by Fs::Ufs::UFSSwapDir::statfs().

safeunlink()

void safeunlink	(	const char *	s,
		int	quiet
	)

Definition at line 469 of file fs_io.cc.

References DBG_IMPORTANT, debugs, StatCounters::disk, statCounter, StatCounters::syscalls, StatCounters::unlinks, and xstrerr().

Referenced by Fs::Ufs::UFSSwapDir::DirClean(), Fs::Ufs::UFSSwapDir::openTmpSwapLog(), RemoveInstance(), and unlinkdUnlink().

Variable Documentation

diskHandleRead

PF diskHandleRead

static

Definition at line 22 of file fs_io.cc.

Referenced by diskHandleRead(), and file_read().

diskHandleWrite

PF diskHandleWrite

static

Definition at line 23 of file fs_io.cc.

Referenced by diskHandleWrite(), file_close(), and file_write().