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cp command: Allow to copy multiple files

This commit is contained in:
sascha 2007-10-17 11:12:57 +02:00
parent 825ad81490
commit b36fca0cb8
1 changed files with 63 additions and 22 deletions
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85
commands/cp.c
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@ -27,55 +27,97 @@
#include <errno.h>
#include <malloc.h>
#include <xfuncs.h>
#include <linux/stat.h>
#include <libbb.h>
#define RW_BUF_SIZE (ulong)4096
static int do_cp ( cmd_tbl_t *cmdtp, int argc, char *argv[])
static int copy_file(const char *src, const char *dst)
{
int r, w, ret = 1;
int src = 0, dst = 0;
char *rw_buf = NULL;
if (argc != 3) {
u_boot_cmd_usage(cmdtp);
return 1;
}
int srcfd = 0, dstfd = 0;
int r, w;
int ret = 1;
rw_buf = xmalloc(RW_BUF_SIZE);
src = open(argv[1], O_RDONLY);
if (src < 0) {
printf("could not open %s: %s\n", argv[1], errno_str());
srcfd = open(src, O_RDONLY);
if (srcfd < 0) {
printf("could not open %s: %s\n", src, errno_str());
goto out;
}
dst = open(argv[2], O_WRONLY | O_CREAT);
if ( dst < 0) {
printf("could not open %s: %s\n", argv[2], errno_str());
dstfd = open(dst, O_WRONLY | O_CREAT);
if (dstfd < 0) {
printf("could not open %s: %s\n", dst, errno_str());
goto out;
}
while(1) {
r = read(src, rw_buf, RW_BUF_SIZE);
r = read(srcfd, rw_buf, RW_BUF_SIZE);
if (read < 0) {
perror("read");
goto out;
}
if (!r)
break;
w = write(dst, rw_buf, r);
w = write(dstfd, rw_buf, r);
if (w < 0) {
perror("write");
goto out;
}
}
ret = 0;
out:
free(rw_buf);
if (src > 0)
close(src);
if (dst > 0)
close(dst);
if (srcfd > 0)
close(srcfd);
if (dstfd > 0)
close(dstfd);
return ret;
}
static int do_cp ( cmd_tbl_t *cmdtp, int argc, char *argv[])
{
int ret = 1;
struct stat statbuf;
int last_is_dir = 0;
int i;
if (argc < 3) {
u_boot_cmd_usage(cmdtp);
return 1;
}
if (!stat(argv[argc - 1], &statbuf)) {
if (S_ISDIR(statbuf.st_mode))
last_is_dir = 1;
}
if (argc > 3 && !last_is_dir) {
printf("cp: target `%s' is not a directory\n", argv[argc - 1]);
return 1;
}
for (i = 1; i < argc - 1; i++) {
if (last_is_dir) {
char *dst;
dst = concat_path_file(argv[argc - 1], argv[i]);
ret = copy_file(argv[i], dst);
if (ret)
goto out;
free(dst);
} else {
ret = copy_file(argv[i], argv[argc - 1]);
if (ret)
goto out;
}
}
ret = 0;
out:
return ret;
}
@ -84,8 +126,7 @@ static __maybe_unused char cmd_cp_help[] =
"cp copies file <source> to <destination>.\n"
"Currently only this form is supported and you have to specify the exact target\n"
"filename (not a target directory).\n"
"Note: This command was previously used as memory copy. Currently there is no\n"
"equivalent command for this. This must be fixed of course.\n";
"This command is file based only. See memcpy for memory copy\n";
U_BOOT_CMD_START(cp)
.maxargs = CONFIG_MAXARGS,