|VOP_ALLOCATE(9)||Kernel Developer's Manual||VOP_ALLOCATE(9)|
allocate storage for a file
vnode *vp, off_t
This call allocates storage for a range of offsets in a file. It is used to implement the posix_fallocate system call.
Its arguments are:
- The vnode of the file.
- The start of the range to allocate storage for in the file.
- The length of the range to allocate storage for in the file.
The offset and len arguments are updated to reflect the portion of the range that still needs to be allocated on return. A partial allocation is considered a successful operation. The file's contents are not changed.
The file should be exclusively locked on entry and will still be locked on exit.
Zero is returned if the call is successful, otherwise an appropriate error code is returned.
|October 3, 2013||Debian|