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Merge pull request #296 from trapexit/fallocate

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add osx version of fallocate
This commit is contained in:
Antonio SJ Musumeci 2016-08-02 23:46:21 -04:00 committed by GitHub
commit 073d1b6f6f
5 changed files with 159 additions and 24 deletions
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29
src/fs_fallocate.cpp
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@ -14,31 +14,12 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <errno.h>
#include <fcntl.h>
#include "fs_fallocate.hpp"
namespace fs
{
int
fallocate(const int fd,
const int mode,
const off_t offset,
const off_t len)
{
int rv;
#ifdef __linux__
rv = ::fallocate(fd,mode,offset,len);
# include "fs_fallocate_linux.icpp"
#elif _XOPEN_SOURCE >= 600 || _POSIX_C_SOURCE >= 200112L
rv = (mode ?
(errno=EOPNOTSUPP,-1) :
(::posix_fallocate(fd,offset,len)));
# include "fs_fallocate_posix.icpp"
#elif __APPLE__
# include "fs_fallocate_osx.icpp"
#else
rv = (errno=EOPNOTSUPP,-1);
# include "fs_fallocate_unsupported.icpp"
#endif
return rv;
}
}

32
src/fs_fallocate_linux.icpp Normal file
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@ -0,0 +1,32 @@
/*
Copyright (c) 2016, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <errno.h>
#include <fcntl.h>
#include "fs_fallocate.hpp"
namespace fs
{
int
fallocate(const int fd,
const int mode,
const off_t offset,
const off_t len)
{
return ::fallocate(fd,mode,offset,len);
}
}

57
src/fs_fallocate_osx.icpp Normal file
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@ -0,0 +1,57 @@
/*
Copyright (c) 2016, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <errno.h>
#include <fcntl.h>
#include "fs_fallocate.hpp"
namespace fs
{
static
int
_fallocate_core(const int fd,
const off_t offset,
const off_t len)
{
int rv;
fstore_t store = {F_ALLOCATECONTIG,F_PEOFPOSMODE,offset,len,0};
rv = ::fcntl(fd,F_PREALLOCATE,&store);
if(rv == -1)
{
store.fst_flags = F_ALLOCATEALL;
rv = ::fcntl(fd,F_PREALLOCATE,&store);
}
if(rv == -1)
return rv;
return ::ftruncate(fd,(offset+len));
}
int
fallocate(const int fd,
const int mode,
const off_t offset,
const off_t len)
{
if(mode)
return (errno=EOPNOTSUPP,-1);
return ::_fallocate_core(fd,offset,len);
}
}

34
src/fs_fallocate_posix.icpp Normal file
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@ -0,0 +1,34 @@
/*
Copyright (c) 2016, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <errno.h>
#include <fcntl.h>
#include "fs_fallocate.hpp"
namespace fs
{
int
fallocate(const int fd,
const int mode,
const off_t offset,
const off_t len)
{
return (mode ?
(errno=EOPNOTSUPP,-1) :
(::posix_fallocate(fd,offset,len)));
}
}

31
src/fs_fallocate_unsupported.icpp Normal file
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@ -0,0 +1,31 @@
/*
Copyright (c) 2016, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <errno.h>
#include "fs_fallocate.hpp"
namespace fs
{
int
fallocate(const int fd,
const int mode,
const off_t offset,
const off_t len)
{
return (errno=EOPNOTSUPP,-1);
}
}