hush/coreutils/cp.c
Denis Vlasenko 091965768d libbb: nuke BB_GETOPT_ERROR, always die if there are mutually exclusive options
find_pair                                            164     180     +16
passwd_main                                         1222    1230      +8
display_speed                                         91      96      +5
msh_main                                            1335    1339      +4
qrealloc                                              38      36      -2
refresh                                             1190    1182      -8
cut_main                                             543     532     -11
sendCgi                                             1807    1794     -13
getopt32                                            1063    1045     -18
arith                                               2077    2030     -47
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(add/remove: 0/0 grow/shrink: 4/6 up/down: 33/-99)            Total: -66 bytes
   text    data     bss     dec     hex filename
 781548    1168   11900  794616   c1ff8 busybox_old
 781452    1168   11900  794520   c1f98 busybox_unstripped
2007-07-21 13:27:44 +00:00

104 lines
2.6 KiB
C

/* vi: set sw=4 ts=4: */
/*
* Mini cp implementation for busybox
*
* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
* SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp>
*
* Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
*/
/* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
* Size reduction.
*/
#include "libbb.h"
#include "libcoreutils/coreutils.h"
/* This is a NOEXEC applet. Be very careful! */
int cp_main(int argc, char **argv);
int cp_main(int argc, char **argv)
{
struct stat source_stat;
struct stat dest_stat;
const char *last;
const char *dest;
int s_flags;
int d_flags;
int flags;
int status = 0;
enum {
OPT_a = 1 << (sizeof(FILEUTILS_CP_OPTSTR)-1),
OPT_r = 1 << (sizeof(FILEUTILS_CP_OPTSTR)),
OPT_P = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+1),
OPT_H = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+2),
OPT_L = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+3),
};
// Soft- and hardlinking don't mix
// -P and -d are the same (-P is POSIX, -d is GNU)
// -r and -R are the same
// -a = -pdR
opt_complementary = "l--s:s--l:Pd:rR:apdR";
flags = getopt32(argc, argv, FILEUTILS_CP_OPTSTR "arPHL");
/* Default behavior of cp is to dereference, so we don't have to do
* anything special when we are given -L.
* The behavior of -H is *almost* like -L, but not quite, so let's
* just ignore it too for fun.
if (flags & OPT_L) ...
if (flags & OPT_H) ... // deref command-line params only
*/
#if ENABLE_SELINUX
if (flags & FILEUTILS_PRESERVE_SECURITY_CONTEXT) {
selinux_or_die();
}
#endif
flags ^= FILEUTILS_DEREFERENCE; /* The sense of this flag was reversed. */
if (optind + 2 > argc) {
bb_show_usage();
}
last = argv[argc - 1];
argv += optind;
/* If there are only two arguments and... */
if (optind + 2 == argc) {
s_flags = cp_mv_stat2(*argv, &source_stat,
(flags & FILEUTILS_DEREFERENCE) ? stat : lstat);
if (s_flags < 0)
return EXIT_FAILURE;
d_flags = cp_mv_stat(last, &dest_stat);
if (d_flags < 0)
return EXIT_FAILURE;
/* ...if neither is a directory or... */
if ( !((s_flags | d_flags) & 2) ||
/* ...recursing, the 1st is a directory, and the 2nd doesn't exist... */
((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags)
) {
/* ...do a simple copy. */
dest = xstrdup(last);
goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */
}
}
do {
dest = concat_path_file(last, bb_get_last_path_component(*argv));
DO_COPY:
if (copy_file(*argv, dest, flags) < 0) {
status = 1;
}
free((void*)dest);
} while (*++argv != last);
return status;
}