morpheus-base

morpheus base system
git clone git://git.2f30.org/morpheus-base.git
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mktemp.c (1446B)


      1 /* See LICENSE file for copyright and license details. */
      2 #include <libgen.h>
      3 #include <limits.h>
      4 #include <stdio.h>
      5 #include <stdlib.h>
      6 #include <string.h>
      7 #include <unistd.h>
      8 
      9 #include "util.h"
     10 
     11 static void
     12 usage(void)
     13 {
     14 	eprintf("usage: %s [-dq] [template]\n", argv0);
     15 }
     16 
     17 static int dflag = 0;
     18 static int qflag = 0;
     19 
     20 int
     21 main(int argc, char *argv[])
     22 {
     23 	char *template = "tmp.XXXXXXXXXX";
     24 	char *tmpdir = "/tmp", *p;
     25 	char path[PATH_MAX], tmp[PATH_MAX];
     26 	int fd;
     27 
     28 	ARGBEGIN {
     29 	case 'd':
     30 		dflag = 1;
     31 		break;
     32 	case 'q':
     33 		qflag = 1;
     34 		break;
     35 	default:
     36 		usage();
     37 	} ARGEND;
     38 
     39 	if (argc > 1)
     40 		usage();
     41 	else if (argc == 1)
     42 		template = argv[0];
     43 
     44 	if ((p = getenv("TMPDIR")))
     45 		tmpdir = p;
     46 
     47 	if (strlcpy(tmp, template, sizeof(tmp)) >= sizeof(tmp))
     48 		eprintf("path too long\n");
     49 	p = dirname(tmp);
     50 	if (p[0] != '.') {
     51 		if (strlcpy(path, template, sizeof(path)) >= sizeof(path))
     52 			eprintf("path too long\n");
     53 	} else {
     54 		if (strlcpy(path, tmpdir, sizeof(path)) >= sizeof(path))
     55 			eprintf("path too long\n");
     56 		if (strlcat(path, "/", sizeof(path)) >= sizeof(path))
     57 			eprintf("path too long\n");
     58 		if (strlcat(path, template, sizeof(path)) >= sizeof(path))
     59 			eprintf("path too long\n");
     60 	}
     61 
     62 	if (dflag) {
     63 		if (!mkdtemp(path)) {
     64 			if (!qflag)
     65 				eprintf("mkdtemp %s:", path);
     66 			exit(1);
     67 		}
     68 	} else {
     69 		if ((fd = mkstemp(path)) < 0) {
     70 			if (!qflag)
     71 				eprintf("mkstemp %s:", path);
     72 			exit(1);
     73 		}
     74 		close(fd);
     75 	}
     76 	puts(path);
     77 	return 0;
     78 }