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(trunk libT) #1966: add explicit support for preallocating files on XFS filesystems

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This commit is contained in:
Charles Kerr 2009-04-05 14:04:07 +00:00
parent 822a192758
commit 1e327f593d
2 changed files with 38 additions and 23 deletions
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2
configure.ac
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@ -146,6 +146,8 @@ if test "x$want_kqueue" = "xyes" ; then
fi
fi
AC_CHECK_HEADERS([xfs/xfs.h])
dnl ----------------------------------------------------------------------------
dnl

59
libtransmission/fdlimit.c
View file

@ -47,6 +47,10 @@
#include <linux/falloc.h>
#endif
#ifdef HAVE_XFS_XFS_H
#include <xfs/xfs.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_GETRLIMIT
@ -158,30 +162,39 @@ preallocateFileFull( const char * filename, uint64_t length )
int fd = open( filename, flags, 0666 );
if( fd >= 0 )
{
# ifdef HAVE_XFS_XFS_H
if( !success && platform_test_xfs_fd( fd ) )
{
xfs_flock64_t fl;
fl.l_whence = 0;
fl.l_start = 0;
fl.l_len = length;
success = !xfsctl( NULL, fd, XFS_IOC_RESVSP64, &fl );
}
# endif
# ifdef SYS_DARWIN
if( !success )
{
fstore_t fst;
fst.fst_flags = F_ALLOCATECONTIG;
fst.fst_posmode = F_PEOFPOSMODE;
fst.fst_offset = 0;
fst.fst_length = length;
fst.fst_bytesalloc = 0;
success = !fcntl( fd, F_PREALLOCATE, &fst );
}
# endif
# ifdef HAVE_FALLOCATE
success = !fallocate( fd, FALLOC_FL_KEEP_SIZE, 0, length );
# elif defined(HAVE_POSIX_FALLOCATE)
success = !posix_fallocate( fd, 0, length );
# elif defined(SYS_DARWIN)
fstore_t fst;
fst.fst_flags = F_ALLOCATECONTIG;
fst.fst_posmode = F_PEOFPOSMODE;
fst.fst_offset = 0;
fst.fst_length = length;
fst.fst_bytesalloc = 0;
success = !fcntl( fd, F_PREALLOCATE, &fst );
# else
#warning no known method to preallocate files on this platform
success = 0;
if( !success )
{
success = !fallocate( fd, FALLOC_FL_KEEP_SIZE, 0, length );
}
# endif
# ifdef HAVE_POSIX_FALLOCATE
if( !success )
{
success = !posix_fallocate( fd, 0, length );
}
# endif
close( fd );