| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2003-2005 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| */ |
| |
| #include "command.h" |
| #include "input.h" |
| #include "init.h" |
| #include "io.h" |
| |
| static cmdinfo_t truncate_cmd; |
| |
| static int |
| truncate_f( |
| int argc, |
| char **argv) |
| { |
| off64_t offset; |
| size_t blocksize, sectsize; |
| |
| init_cvtnum(&blocksize, §size); |
| offset = cvtnum(blocksize, sectsize, argv[1]); |
| if (offset < 0) { |
| printf(_("non-numeric truncate argument -- %s\n"), argv[1]); |
| exitcode = 1; |
| return 0; |
| } |
| |
| if (ftruncate(file->fd, offset) < 0) { |
| perror("ftruncate"); |
| exitcode = 1; |
| return 0; |
| } |
| return 0; |
| } |
| |
| void |
| truncate_init(void) |
| { |
| truncate_cmd.name = "truncate"; |
| truncate_cmd.altname = "t"; |
| truncate_cmd.cfunc = truncate_f; |
| truncate_cmd.argmin = 1; |
| truncate_cmd.argmax = 1; |
| truncate_cmd.flags = CMD_NOMAP_OK | CMD_FOREIGN_OK; |
| truncate_cmd.args = _("off"); |
| truncate_cmd.oneline = |
| _("truncates the current file at the given offset"); |
| |
| add_command(&truncate_cmd); |
| } |