int vfs_allocate_file_space(files_struct *fsp, SMB_BIG_UINT len)
{
int ret;
SMB_STRUCT_STAT st;
connection_struct *conn = fsp->conn;
SMB_BIG_UINT space_avail;
SMB_BIG_UINT bsize,dfree,dsize;
release_level_2_oplocks_on_change(fsp);
/*
* Actually try and commit the space on disk....
*/
DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n", fsp->fsp_name, (double)len ));
/* Foxconn removed start pling 11/18/2009 */
/* Don't check negative length, to avoid "disk full" error
* when copy file from Vista/Win7 to USB.
*/
#if 0
if (((SMB_OFF_T)len) < 0) {
DEBUG(0,("vfs_allocate_file_space: %s negative len requested.\n", fsp->fsp_name ));
errno = EINVAL;
return -1;
}
#endif
/* Foxconn removed end pling 11/18/2009 */
ret = SMB_VFS_FSTAT(fsp,fsp->fh->fd,&st);
if (ret == -1)
return ret;
if (len == (SMB_BIG_UINT)st.st_size)
return 0;
if (len < (SMB_BIG_UINT)st.st_size) {
/* Shrink - use ftruncate. */
DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current size %.0f\n",
fsp->fsp_name, (double)st.st_size ));
flush_write_cache(fsp, SIZECHANGE_FLUSH);
if ((ret = SMB_VFS_FTRUNCATE(fsp, fsp->fh->fd, (SMB_OFF_T)len)) != -1) {
set_filelen_write_cache(fsp, len);
}
return ret;
}
/* Grow - we need to test if we have enough space. */
if (!lp_strict_allocate(SNUM(fsp->conn)))
return 0;
len -= st.st_size;
len /= 1024; /* Len is now number of 1k blocks needed. */
space_avail = get_dfree_info(conn,fsp->fsp_name,False,&bsize,&dfree,&dsize);
if (space_avail == (SMB_BIG_UINT)-1) {
return -1;
}
DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, needed blocks = %.0f, space avail = %.0f\n",
fsp->fsp_name, (double)st.st_size, (double)len, (double)space_avail ));
if (len > space_avail) {
errno = ENOSPC;
return -1;
}
return 0;
}
int vfs_allocate_file_space(files_struct *fsp, uint64_t len)
{
int ret;
SMB_STRUCT_STAT st;
connection_struct *conn = fsp->conn;
uint64_t space_avail;
uint64_t bsize,dfree,dsize;
/*
* Actually try and commit the space on disk....
*/
DEBUG(10,("vfs_allocate_file_space: file %s, len %.0f\n",
fsp_str_dbg(fsp), (double)len));
if (((SMB_OFF_T)len) < 0) {
DEBUG(0,("vfs_allocate_file_space: %s negative len "
"requested.\n", fsp_str_dbg(fsp)));
errno = EINVAL;
return -1;
}
ret = SMB_VFS_FSTAT(fsp, &st);
if (ret == -1)
return ret;
if (len == (uint64_t)st.st_ex_size)
return 0;
if (len < (uint64_t)st.st_ex_size) {
/* Shrink - use ftruncate. */
DEBUG(10,("vfs_allocate_file_space: file %s, shrink. Current "
"size %.0f\n", fsp_str_dbg(fsp),
(double)st.st_ex_size));
contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
flush_write_cache(fsp, SIZECHANGE_FLUSH);
if ((ret = SMB_VFS_FTRUNCATE(fsp, (SMB_OFF_T)len)) != -1) {
set_filelen_write_cache(fsp, len);
}
contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_SHRINK);
return ret;
}
/* Grow - we need to test if we have enough space. */
contend_level2_oplocks_begin(fsp, LEVEL2_CONTEND_ALLOC_GROW);
contend_level2_oplocks_end(fsp, LEVEL2_CONTEND_ALLOC_GROW);
if (!lp_strict_allocate(SNUM(fsp->conn)))
return 0;
len -= st.st_ex_size;
len /= 1024; /* Len is now number of 1k blocks needed. */
space_avail = get_dfree_info(conn, fsp->fsp_name->base_name, false,
&bsize, &dfree, &dsize);
if (space_avail == (uint64_t)-1) {
return -1;
}
DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, "
"needed blocks = %.0f, space avail = %.0f\n",
fsp_str_dbg(fsp), (double)st.st_ex_size, (double)len,
(double)space_avail));
if (len > space_avail) {
errno = ENOSPC;
return -1;
}
return 0;
}
