busybox/coreutils/mktemp.c

122 lines
3.6 KiB
C
Raw Normal View History

2000-04-26 04:54:55 +05:30
/* 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.
2000-04-26 04:54:55 +05:30
*/
/* 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: $TMPDIR, if set; else the directory specified via
* -p; else /tmp [deprecated]
*/
//config:config MKTEMP
//config: bool "mktemp (4 kb)"
//config: default y
//config: help
//config: mktemp is used to create unique temporary files
//applet:IF_MKTEMP(APPLET_NOEXEC(mktemp, mktemp, BB_DIR_BIN, BB_SUID_DROP, mktemp))
//kbuild:lib-$(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"
2000-04-26 04:54:55 +05:30
int mktemp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
2008-07-05 14:48:54 +05:30
int mktemp_main(int argc UNUSED_PARAM, char **argv)
2000-04-26 04:54:55 +05:30
{
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,
};
2006-01-25 05:38:53 +05:30
path = getenv("TMPDIR");
if (!path || path[0] == '\0')
path = "/tmp";
getopt32: remove opt_complementary function old new delta vgetopt32 1318 1392 +74 runsvdir_main 703 713 +10 bb_make_directory 423 425 +2 collect_cpu 546 545 -1 opt_chars 3 - -3 opt_complementary 4 - -4 tftpd_main 567 562 -5 ntp_init 476 471 -5 zcip_main 1266 1256 -10 xxd_main 428 418 -10 whois_main 140 130 -10 who_main 463 453 -10 which_main 212 202 -10 wget_main 2535 2525 -10 watchdog_main 291 281 -10 watch_main 222 212 -10 vlock_main 399 389 -10 uuencode_main 332 322 -10 uudecode_main 316 306 -10 unlink_main 45 35 -10 udhcpd_main 1482 1472 -10 udhcpc_main 2762 2752 -10 tune2fs_main 290 280 -10 tunctl_main 366 356 -10 truncate_main 218 208 -10 tr_main 518 508 -10 time_main 1134 1124 -10 tftp_main 286 276 -10 telnetd_main 1873 1863 -10 tcpudpsvd_main 1785 1775 -10 taskset_main 521 511 -10 tar_main 1009 999 -10 tail_main 1644 1634 -10 syslogd_main 1967 1957 -10 switch_root_main 368 358 -10 svlogd_main 1454 1444 -10 sv 1296 1286 -10 stat_main 104 94 -10 start_stop_daemon_main 1028 1018 -10 split_main 542 532 -10 sort_main 796 786 -10 slattach_main 624 614 -10 shuf_main 504 494 -10 setsid_main 96 86 -10 setserial_main 1132 1122 -10 setfont_main 388 378 -10 setconsole_main 78 68 -10 sendmail_main 1209 1199 -10 sed_main 677 667 -10 script_main 1077 1067 -10 run_parts_main 325 315 -10 rtcwake_main 454 444 -10 rm_main 175 165 -10 reformime_main 119 109 -10 readlink_main 123 113 -10 rdate_main 246 236 -10 pwdx_main 189 179 -10 pstree_main 317 307 -10 pscan_main 663 653 -10 popmaildir_main 818 808 -10 pmap_main 80 70 -10 nc_main 1042 1032 -10 mv_main 558 548 -10 mountpoint_main 477 467 -10 mount_main 1264 1254 -10 modprobe_main 768 758 -10 modinfo_main 333 323 -10 mktemp_main 200 190 -10 mkswap_main 324 314 -10 mkfs_vfat_main 1489 1479 -10 microcom_main 715 705 -10 md5_sha1_sum_main 521 511 -10 man_main 867 857 -10 makedevs_main 1052 1042 -10 ls_main 563 553 -10 losetup_main 432 422 -10 loadfont_main 89 79 -10 ln_main 524 514 -10 link_main 75 65 -10 ipcalc_main 544 534 -10 iostat_main 2397 2387 -10 install_main 768 758 -10 id_main 480 470 -10 i2cset_main 1239 1229 -10 i2cget_main 380 370 -10 i2cdump_main 1482 1472 -10 i2cdetect_main 682 672 -10 hwclock_main 406 396 -10 httpd_main 741 731 -10 grep_main 837 827 -10 getty_main 1559 1549 -10 fuser_main 297 287 -10 ftpgetput_main 345 335 -10 ftpd_main 2232 2222 -10 fstrim_main 251 241 -10 fsfreeze_main 77 67 -10 fsck_minix_main 2921 2911 -10 flock_main 314 304 -10 flashcp_main 740 730 -10 flash_eraseall_main 833 823 -10 fdformat_main 532 522 -10 expand_main 680 670 -10 eject_main 335 325 -10 dumpleases_main 630 620 -10 du_main 314 304 -10 dos2unix_main 441 431 -10 diff_main 1350 1340 -10 df_main 1064 1054 -10 date_main 1095 1085 -10 cut_main 961 951 -10 cryptpw_main 228 218 -10 crontab_main 575 565 -10 crond_main 1149 1139 -10 cp_main 370 360 -10 common_traceroute_main 3834 3824 -10 common_ping_main 1767 1757 -10 comm_main 239 229 -10 cmp_main 655 645 -10 chrt_main 379 369 -10 chpst_main 704 694 -10 chpasswd_main 308 298 -10 chown_main 171 161 -10 chmod_main 158 148 -10 cat_main 428 418 -10 bzip2_main 120 110 -10 blkdiscard_main 264 254 -10 base64_main 221 211 -10 arping_main 1665 1655 -10 ar_main 556 546 -10 adjtimex_main 406 396 -10 adduser_main 882 872 -10 addgroup_main 411 401 -10 acpid_main 1198 1188 -10 optstring 11 - -11 opt_string 18 - -18 OPT_STR 25 - -25 ubi_tools_main 1288 1258 -30 ls_options 31 - -31 ------------------------------------------------------------------------------ (add/remove: 0/6 grow/shrink: 3/129 up/down: 86/-1383) Total: -1297 bytes text data bss dec hex filename 915428 485 6876 922789 e14a5 busybox_old 914629 485 6872 921986 e1182 busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-09 01:25:02 +05:30
opts = getopt32(argv, "^" "dqtp:u" "\0" "?1"/*1 arg max*/, &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();
2000-04-26 04:54:55 +05:30
}