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| author | Tim Prouty <tprouty@samba.org> | 2009-01-26 15:39:40 -0800 |
|---|---|---|
| committer | Tim Prouty <tprouty@samba.org> | 2009-01-29 15:29:33 -0800 |
| commit | b8f7cdbd79918bba0fea181f97fff5ab0c79192d (patch) | |
| tree | 6716b36bb6421e0cff45dc224a1705bb396e8dd2 /source3/modules/vfs_default.c | |
| parent | aeb23872e25fb720140a10ce01a4211d228b6555 (diff) | |
| download | samba-b8f7cdbd79918bba0fea181f97fff5ab0c79192d.tar.gz samba-b8f7cdbd79918bba0fea181f97fff5ab0c79192d.tar.bz2 samba-b8f7cdbd79918bba0fea181f97fff5ab0c79192d.zip | |
s3: Add a new SMB_VFS_GET_ALLOC_SIZE vfs operation
This allows module implementors to customize what allocation size is
returned to the client.
Diffstat (limited to 'source3/modules/vfs_default.c')
| -rw-r--r-- | source3/modules/vfs_default.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/source3/modules/vfs_default.c b/source3/modules/vfs_default.c index a9aabab768..f8ac3e85d3 100644 --- a/source3/modules/vfs_default.c +++ b/source3/modules/vfs_default.c @@ -551,6 +551,39 @@ int vfswrap_lstat(vfs_handle_struct *handle, const char *path, SMB_STRUCT_STAT return result; } +/******************************************************************** + Given a stat buffer return the allocated size on disk, taking into + account sparse files. +********************************************************************/ +static uint64_t vfswrap_get_alloc_size(vfs_handle_struct *handle, + struct files_struct *fsp, + const SMB_STRUCT_STAT *sbuf) +{ + uint64_t result; + + START_PROFILE(syscall_get_alloc_size); + + if(S_ISDIR(sbuf->st_mode)) { + result = 0; + goto out; + } + +#if defined(HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE) + result = (uint64_t)STAT_ST_BLOCKSIZE * (uint64_t)sbuf->st_blocks; +#else + result = get_file_size_stat(sbuf); +#endif + + if (fsp && fsp->initial_allocation_size) + result = MAX(result,fsp->initial_allocation_size); + + result = smb_roundup(handle->conn, result); + + out: + END_PROFILE(syscall_get_alloc_size); + return result; +} + static int vfswrap_unlink(vfs_handle_struct *handle, const char *path) { int result; @@ -1043,7 +1076,7 @@ static NTSTATUS vfswrap_streaminfo(vfs_handle_struct *handle, } streams->size = sbuf.st_size; - streams->alloc_size = get_allocation_size(handle->conn, fsp, &sbuf); + streams->alloc_size = SMB_VFS_GET_ALLOC_SIZE(handle->conn, fsp, &sbuf); streams->name = talloc_strdup(streams, "::$DATA"); if (streams->name == NULL) { @@ -1443,6 +1476,8 @@ static vfs_op_tuple vfs_default_ops[] = { SMB_VFS_LAYER_OPAQUE}, {SMB_VFS_OP(vfswrap_lstat), SMB_VFS_OP_LSTAT, SMB_VFS_LAYER_OPAQUE}, + {SMB_VFS_OP(vfswrap_get_alloc_size), SMB_VFS_OP_GET_ALLOC_SIZE, + SMB_VFS_LAYER_OPAQUE}, {SMB_VFS_OP(vfswrap_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_OPAQUE}, {SMB_VFS_OP(vfswrap_chmod), SMB_VFS_OP_CHMOD, |