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Diffstat (limited to 'coreutils/mktemp.c')
| -rw-r--r-- | coreutils/mktemp.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/coreutils/mktemp.c b/coreutils/mktemp.c new file mode 100644 index 000000000..65353697a --- /dev/null +++ b/coreutils/mktemp.c @@ -0,0 +1,122 @@ +/* vi: set sw=4 ts=4: */ +/* + * Mini mktemp implementation for busybox + * + * + * Copyright (C) 2000 by Daniel Jacobowitz + * Written by Daniel Jacobowitz <dan@debian.org> + * + * Licensed under GPLv2 or later, see file LICENSE in this source tree. + */ + +/* Coreutils 6.12 man page says: + * mktemp [OPTION]... [TEMPLATE] + * Create a temporary file or directory, safely, and print its name. If + * TEMPLATE is not specified, use tmp.XXXXXXXXXX. + * -d, --directory + * create a directory, not a file + * -q, --quiet + * suppress diagnostics about file/dir-creation failure + * -u, --dry-run + * do not create anything; merely print a name (unsafe) + * --tmpdir[=DIR] + * interpret TEMPLATE relative to DIR. If DIR is not specified, + * use $TMPDIR if set, else /tmp. With this option, TEMPLATE must + * not be an absolute name. Unlike with -t, TEMPLATE may contain + * slashes, but even here, mktemp still creates only the final com- + * ponent. + * -p DIR use DIR as a prefix; implies -t [deprecated] + * -t interpret TEMPLATE as a single file name component, relative to + * a directory: $TMPDIR, if set; else the directory specified via + * -p; else /tmp [deprecated] + */ +//config:config MKTEMP +//config: bool "mktemp" +//config: default y +//config: help +//config: mktemp is used to create unique temporary files + +//applet:IF_MKTEMP(APPLET(mktemp, BB_DIR_BIN, BB_SUID_DROP)) + +//kbuild:lib-$(CONFIG_MKTEMP) += mktemp.o + +//usage:#define mktemp_trivial_usage +//usage: "[-dt] [-p DIR] [TEMPLATE]" +//usage:#define mktemp_full_usage "\n\n" +//usage: "Create a temporary file with name based on TEMPLATE and print its name.\n" +//usage: "TEMPLATE must end with XXXXXX (e.g. [/dir/]nameXXXXXX).\n" +//usage: "Without TEMPLATE, -t tmp.XXXXXX is assumed.\n" +//usage: "\n -d Make directory, not file" +//usage: "\n -q Fail silently on errors" +//usage: "\n -t Prepend base directory name to TEMPLATE" +//usage: "\n -p DIR Use DIR as a base directory (implies -t)" +//usage: "\n -u Do not create anything; print a name" +//usage: "\n" +//usage: "\nBase directory is: -p DIR, else $TMPDIR, else /tmp" +//usage: +//usage:#define mktemp_example_usage +//usage: "$ mktemp /tmp/temp.XXXXXX\n" +//usage: "/tmp/temp.mWiLjM\n" +//usage: "$ ls -la /tmp/temp.mWiLjM\n" +//usage: "-rw------- 1 andersen andersen 0 Apr 25 17:10 /tmp/temp.mWiLjM\n" + +#include "libbb.h" + +int mktemp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int mktemp_main(int argc UNUSED_PARAM, char **argv) +{ + const char *path; + char *chp; + unsigned opts; + enum { + OPT_d = 1 << 0, + OPT_q = 1 << 1, + OPT_t = 1 << 2, + OPT_p = 1 << 3, + OPT_u = 1 << 4, + }; + + path = getenv("TMPDIR"); + if (!path || path[0] == '\0') + path = "/tmp"; + + opt_complementary = "?1"; /* 1 argument max */ + opts = getopt32(argv, "dqtp:u", &path); + + chp = argv[optind]; + if (!chp) { + /* GNU coreutils 8.4: + * bare "mktemp" -> "mktemp -t tmp.XXXXXX" + */ + chp = xstrdup("tmp.XXXXXX"); + opts |= OPT_t; + } +#if 0 + /* Don't allow directory separator in template */ + if ((opts & OPT_t) && bb_basename(chp) != chp) { + errno = EINVAL; + goto error; + } +#endif + if (opts & (OPT_t|OPT_p)) + chp = concat_path_file(path, chp); + + if (opts & OPT_u) { + chp = mktemp(chp); + if (chp[0] == '\0') + goto error; + } else if (opts & OPT_d) { + if (mkdtemp(chp) == NULL) + goto error; + } else { + if (mkstemp(chp) < 0) + goto error; + } + puts(chp); + return EXIT_SUCCESS; + error: + if (opts & OPT_q) + return EXIT_FAILURE; + /* don't use chp as it gets mangled in case of error */ + bb_perror_nomsg_and_die(); +} |