diff options
Diffstat (limited to 'coreutils/mv.c')
| -rw-r--r-- | coreutils/mv.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/coreutils/mv.c b/coreutils/mv.c new file mode 100644 index 0000000..be10b03 --- /dev/null +++ b/coreutils/mv.c @@ -0,0 +1,135 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini mv implementation for busybox + * + * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu> + * SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp> + * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. + */ + +/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) + * + * Size reduction and improved error checking. + */ + +#include "libbb.h" +#include "libcoreutils/coreutils.h" + +#if ENABLE_FEATURE_MV_LONG_OPTIONS +static const char mv_longopts[] ALIGN1 = + "interactive\0" No_argument "i" + "force\0" No_argument "f" + ; +#endif + +#define OPT_FILEUTILS_FORCE 1 +#define OPT_FILEUTILS_INTERACTIVE 2 + +int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int mv_main(int argc, char **argv) +{ + struct stat dest_stat; + const char *last; + const char *dest; + unsigned flags; + int dest_exists; + int status = 0; + int copy_flag = 0; + +#if ENABLE_FEATURE_MV_LONG_OPTIONS + applet_long_options = mv_longopts; +#endif + // Need at least two arguments + // -f unsets -i, -i unsets -f + opt_complementary = "-2:f-i:i-f"; + flags = getopt32(argv, "fi"); + argc -= optind; + argv += optind; + last = argv[argc - 1]; + + if (argc == 2) { + dest_exists = cp_mv_stat(last, &dest_stat); + if (dest_exists < 0) { + return EXIT_FAILURE; + } + + if (!(dest_exists & 2)) { /* last is not a directory */ + dest = last; + goto DO_MOVE; + } + } + + do { + dest = concat_path_file(last, bb_get_last_path_component_strip(*argv)); + dest_exists = cp_mv_stat(dest, &dest_stat); + if (dest_exists < 0) { + goto RET_1; + } + + DO_MOVE: + if (dest_exists + && !(flags & OPT_FILEUTILS_FORCE) + && ((access(dest, W_OK) < 0 && isatty(0)) + || (flags & OPT_FILEUTILS_INTERACTIVE)) + ) { + if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) { + goto RET_1; /* Ouch! fprintf failed! */ + } + if (!bb_ask_confirmation()) { + goto RET_0; + } + } + if (rename(*argv, dest) < 0) { + struct stat source_stat; + int source_exists; + + if (errno != EXDEV + || (source_exists = cp_mv_stat2(*argv, &source_stat, lstat)) < 1 + ) { + bb_perror_msg("cannot rename '%s'", *argv); + } else { + static const char fmt[] ALIGN1 = + "cannot overwrite %sdirectory with %sdirectory"; + + if (dest_exists) { + if (dest_exists == 3) { + if (source_exists != 3) { + bb_error_msg(fmt, "", "non-"); + goto RET_1; + } + } else { + if (source_exists == 3) { + bb_error_msg(fmt, "non-", ""); + goto RET_1; + } + } + if (unlink(dest) < 0) { + bb_perror_msg("cannot remove '%s'", dest); + goto RET_1; + } + } + /* FILEUTILS_RECUR also prevents nasties like + * "read from device and write contents to dst" + * instead of "create same device node" */ + copy_flag = FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS; +#if ENABLE_SELINUX + copy_flag |= FILEUTILS_PRESERVE_SECURITY_CONTEXT; +#endif + if ((copy_file(*argv, dest, copy_flag) >= 0) + && (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0) + ) { + goto RET_0; + } + } + RET_1: + status = 1; + } + RET_0: + if (dest != last) { + free((void *) dest); + } + } while (*++argv != last); + + return status; +} |