108 lines
2.9 KiB
C
108 lines
2.9 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) MAIN_EXTERNALLY_VISIBLE;
|
|
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),
|
|
};
|
|
|
|
// Need at least two arguments
|
|
// Soft- and hardlinking doesn't mix
|
|
// -P and -d are the same (-P is POSIX, -d is GNU)
|
|
// -r and -R are the same
|
|
// -R (and therefore -r) turns on -d (coreutils does this)
|
|
// -a = -pdR
|
|
opt_complementary = "-2:l--s:s--l:Pd:rRd:Rd:apdR:HL";
|
|
flags = getopt32(argv, FILEUTILS_CP_OPTSTR "arPH");
|
|
argc -= optind;
|
|
argv += optind;
|
|
flags ^= FILEUTILS_DEREFERENCE; /* the sense of this flag was reversed */
|
|
/* coreutils 6.9 compat:
|
|
* by default, "cp" derefs symlinks (creates regular dest files),
|
|
* but "cp -R" does not. We switch off deref if -r or -R (see above).
|
|
* However, "cp -RL" must still deref symlinks: */
|
|
if (flags & FILEUTILS_DEREF_SOFTLINK) /* -L */
|
|
flags |= FILEUTILS_DEREFERENCE;
|
|
/* The behavior of -H is *almost* like -L, but not quite, so let's
|
|
* just ignore it too for fun. TODO.
|
|
if (flags & OPT_H) ... // deref command-line params only
|
|
*/
|
|
|
|
#if ENABLE_SELINUX
|
|
if (flags & FILEUTILS_PRESERVE_SECURITY_CONTEXT) {
|
|
selinux_or_die();
|
|
}
|
|
#endif
|
|
|
|
last = argv[argc - 1];
|
|
/* If there are only two arguments and... */
|
|
if (argc == 2) {
|
|
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 = last;
|
|
goto DO_COPY; /* NB: argc==2 -> *++argv==last */
|
|
}
|
|
}
|
|
|
|
while (1) {
|
|
dest = concat_path_file(last, bb_get_last_path_component_strip(*argv));
|
|
DO_COPY:
|
|
if (copy_file(*argv, dest, flags) < 0) {
|
|
status = 1;
|
|
}
|
|
if (*++argv == last) {
|
|
/* possibly leaking dest... */
|
|
break;
|
|
}
|
|
free((void*)dest);
|
|
}
|
|
|
|
/* Exit. We are NOEXEC, not NOFORK. We do exit at the end of main() */
|
|
return status;
|
|
}
|