120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini mktemp implementation for busybox
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*
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* Copyright (C) 2000 by Daniel Jacobowitz
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* Written by Daniel Jacobowitz <dan@debian.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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/* Coreutils 6.12 man page says:
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* mktemp [OPTION]... [TEMPLATE]
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* Create a temporary file or directory, safely, and print its name. If
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* TEMPLATE is not specified, use tmp.XXXXXXXXXX.
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* -d, --directory
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* create a directory, not a file
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* -q, --quiet
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* suppress diagnostics about file/dir-creation failure
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* -u, --dry-run
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* do not create anything; merely print a name (unsafe)
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* --tmpdir[=DIR]
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* interpret TEMPLATE relative to DIR. If DIR is not specified,
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* use $TMPDIR if set, else /tmp. With this option, TEMPLATE must
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* not be an absolute name. Unlike with -t, TEMPLATE may contain
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* slashes, but even here, mktemp still creates only the final com-
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* ponent.
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* -p DIR use DIR as a prefix; implies -t [deprecated]
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* -t interpret TEMPLATE as a single file name component, relative to
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* a directory: $TMPDIR, if set; else the directory specified via
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* -p; else /tmp [deprecated]
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*/
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//config:config MKTEMP
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//config: bool "mktemp (4.2 kb)"
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//config: default y
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//config: help
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//config: mktemp is used to create unique temporary files
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//applet:IF_MKTEMP(APPLET_NOEXEC(mktemp, mktemp, BB_DIR_BIN, BB_SUID_DROP, mktemp))
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//kbuild:lib-$(CONFIG_MKTEMP) += mktemp.o
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//usage:#define mktemp_trivial_usage
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//usage: "[-dt] [-p DIR] [TEMPLATE]"
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//usage:#define mktemp_full_usage "\n\n"
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//usage: "Create a temporary file with name based on TEMPLATE and print its name.\n"
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//usage: "TEMPLATE must end with XXXXXX (e.g. [/dir/]nameXXXXXX).\n"
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//usage: "Without TEMPLATE, -t tmp.XXXXXX is assumed.\n"
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//usage: "\n -d Make directory, not file"
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//usage: "\n -q Fail silently on errors"
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//usage: "\n -t Prepend base directory name to TEMPLATE"
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//usage: "\n -p DIR Use DIR as a base directory (implies -t)"
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//usage: "\n -u Do not create anything; print a name"
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//usage: "\n"
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//usage: "\nBase directory is: -p DIR, else $TMPDIR, else /tmp"
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//usage:
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//usage:#define mktemp_example_usage
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//usage: "$ mktemp /tmp/temp.XXXXXX\n"
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//usage: "/tmp/temp.mWiLjM\n"
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//usage: "$ ls -la /tmp/temp.mWiLjM\n"
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//usage: "-rw------- 1 andersen andersen 0 Apr 25 17:10 /tmp/temp.mWiLjM\n"
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#include "libbb.h"
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int mktemp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int mktemp_main(int argc UNUSED_PARAM, char **argv)
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{
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const char *path;
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char *chp;
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unsigned opts;
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enum {
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OPT_d = 1 << 0,
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OPT_q = 1 << 1,
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OPT_t = 1 << 2,
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OPT_p = 1 << 3,
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OPT_u = 1 << 4,
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};
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path = getenv("TMPDIR");
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if (!path || path[0] == '\0')
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path = "/tmp";
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opts = getopt32(argv, "^" "dqtp:u" "\0" "?1"/*1 arg max*/, &path);
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chp = argv[optind];
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if (!chp) {
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/* GNU coreutils 8.4:
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* bare "mktemp" -> "mktemp -t tmp.XXXXXX"
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*/
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chp = xstrdup("tmp.XXXXXX");
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opts |= OPT_t;
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}
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#if 0
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/* Don't allow directory separator in template */
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if ((opts & OPT_t) && bb_basename(chp) != chp) {
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errno = EINVAL;
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goto error;
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}
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#endif
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if (opts & (OPT_t|OPT_p))
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chp = concat_path_file(path, chp);
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if (opts & OPT_u) {
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chp = mktemp(chp);
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if (chp[0] == '\0')
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goto error;
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} else if (opts & OPT_d) {
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if (mkdtemp(chp) == NULL)
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goto error;
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} else {
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if (mkstemp(chp) < 0)
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goto error;
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}
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puts(chp);
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return EXIT_SUCCESS;
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error:
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if (opts & OPT_q)
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return EXIT_FAILURE;
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/* don't use chp as it gets mangled in case of error */
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bb_perror_nomsg_and_die();
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}
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