91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/*
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* cp.c - copy files
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*
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* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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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 version 2
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* as published by the Free Software Foundation.
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*
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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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*
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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <malloc.h>
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#include <xfuncs.h>
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#define RW_BUF_SIZE (ulong)4096
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int do_cp ( cmd_tbl_t *cmdtp, int argc, char *argv[])
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{
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int r, w, ret = 1;
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int src = 0, dst = 0;
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char *rw_buf = NULL;
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rw_buf = xmalloc(RW_BUF_SIZE);
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src = open(argv[1], O_RDONLY);
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if (src < 0) {
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printf("could not open %s: %s\n", src, errno_str());
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goto out;
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}
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dst = open(argv[2], O_WRONLY | O_CREAT);
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if ( dst < 0) {
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printf("could not open %s: %s\n", dst, errno_str());
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goto out;
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}
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while(1) {
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r = read(src, rw_buf, RW_BUF_SIZE);
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if (read < 0) {
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perror("read");
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goto out;
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}
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if (!r)
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break;
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w = write(dst, rw_buf, r);
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if (w < 0) {
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perror("write");
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goto out;
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}
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}
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ret = 0;
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out:
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free(rw_buf);
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if (src)
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close(src);
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if (dst)
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close(dst);
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return ret;
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}
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static __maybe_unused char cmd_cp_help[] =
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"Usage: cp <source> <destination>\n"
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"cp copies file <source> to <destination>.\n"
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"Currently only this form is supported and you have to specify the exact target\n"
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"filename (not a target directory).\n"
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"Note: This command was previously used as memory copy. Currently there is no\n"
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"equivalent command for this. This must be fixed of course.\n";
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U_BOOT_CMD_START(cp)
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.maxargs = CONFIG_MAXARGS,
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.cmd = do_cp,
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.usage = "copy files",
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U_BOOT_CMD_HELP(cmd_cp_help)
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U_BOOT_CMD_END
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