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66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
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Unix SMB/CIFS implementation.
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POSIX NTVFS backend - seek
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Copyright (C) Andrew Tridgell 2004
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "vfs_posix.h"
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/*
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seek in a file
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*/
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NTSTATUS pvfs_seek(struct ntvfs_module_context *ntvfs,
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struct ntvfs_request *req,
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union smb_seek *io)
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{
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struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
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struct pvfs_state);
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struct pvfs_file *f;
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struct pvfs_file_handle *h;
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NTSTATUS status;
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f = pvfs_find_fd(pvfs, req, io->lseek.in.file.ntvfs);
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if (!f) {
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return NT_STATUS_INVALID_HANDLE;
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}
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h = f->handle;
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status = NT_STATUS_OK;
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switch (io->lseek.in.mode) {
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case SEEK_MODE_START:
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h->seek_offset = io->lseek.in.offset;
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break;
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case SEEK_MODE_CURRENT:
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h->seek_offset += io->lseek.in.offset;
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break;
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case SEEK_MODE_END:
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status = pvfs_resolve_name_fd(pvfs, h->fd, h->name, PVFS_RESOLVE_NO_OPENDB);
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h->seek_offset = h->name->st.st_size + io->lseek.in.offset;
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break;
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}
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io->lseek.out.offset = h->seek_offset;
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return status;
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}
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