/* Preallocate the file
This functon is wrapped in case we want to provide more
feedback / checking
*/
int
preallocateFile(int fileHandle, long long startOffset, long long bytesToAllocate)
{
int rc = gpfs_prealloc(fileHandle, startOffset, bytesToAllocate);
if (rc < 0)
{
fprintf(stderr, "Error %d: preallocation at %lld for %lld in %s\n",
errno, startOffset, bytesToAllocate, fileName);
return (-1);
}
return (TRUE);
}
static int preallocate_space(int fd, SMB_OFF_T size)
{
int err;
#ifndef HAVE_GPFS
lock_type fl = {0};
if (size <= 0) {
return 0;
}
fl.l_whence = SEEK_SET;
fl.l_start = 0;
fl.l_len = size;
/* IMPORTANT: We use RESVSP because we want the extents to be
* allocated, but we don't want the allocation to show up in
* st_size or persist after the close(2).
*/
#if defined(XFS_IOC_RESVSP64)
/* On Linux this comes in via libxfs.h. */
err = xfsctl(NULL, fd, XFS_IOC_RESVSP64, &fl);
#elif defined(F_RESVSP64)
/* On IRIX, this comes from fcntl.h. */
err = fcntl(fd, F_RESVSP64, &fl);
#else
err = -1;
errno = ENOSYS;
#endif
#else /* GPFS uses completely different interface */
err = gpfs_prealloc(fd, (gpfs_off64_t)0, (gpfs_off64_t)size);
#endif
if (err) {
DEBUG(module_debug,
("%s: preallocate failed on fd=%d size=%lld: %s\n",
MODULE, fd, (long long)size, strerror(errno)));
}
return err;
}
