diff options
| -rw-r--r-- | usr.bin/mktemp/Makefile | 5 | ||||
| -rw-r--r-- | usr.bin/mktemp/mktemp.1 | 130 | ||||
| -rw-r--r-- | usr.bin/mktemp/mktemp.c | 97 |
3 files changed, 232 insertions, 0 deletions
diff --git a/usr.bin/mktemp/Makefile b/usr.bin/mktemp/Makefile new file mode 100644 index 00000000000..893632d5caa --- /dev/null +++ b/usr.bin/mktemp/Makefile @@ -0,0 +1,5 @@ +# $OpenBSD: Makefile,v 1.1 1996/11/21 07:59:31 millert Exp $ + +PROG= mktemp + +.include <bsd.prog.mk> diff --git a/usr.bin/mktemp/mktemp.1 b/usr.bin/mktemp/mktemp.1 new file mode 100644 index 00000000000..4f6ff85d8c1 --- /dev/null +++ b/usr.bin/mktemp/mktemp.1 @@ -0,0 +1,130 @@ +.\" $OpenBSD: mktemp.1,v 1.1 1996/11/21 07:59:32 millert Exp $ +.\" +.\" Copyright (c) 1989, 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd "November 20, 1996" +.Dt MKTEMP 1 +.Os +.Sh NAME +.Nm mktemp +.Nd make temporary file name (unique) +.Sh SYNOPSIS +.Nm mktemp +.Op Fl u +.Op Fl q +.Ar template +.Sh DESCRIPTION +The +.Nm mktemp +utility takes the given file name template and overwrites a +portion of it to create a file name. This file name is unique +and suitable for use by the application. The template may be +any file name with some number of +.Ql X Ns s +appended +to it, for example +.Pa /tmp/temp.XXXX . +The trailing +.Ql X Ns s +are replaced with the current process number and/or a +unique letter combination. +The number of unique file names +.Nm +can return depends on the number of +.Ql X Ns s +provided; six +.Ql X Ns s +will +result in +.Nm +testing roughly 26 ** 6 combinations. +.Pp +If +.Nm +can successfully generate a unique file name, the file +is created with mode 0600 (unless the +.Fl u +flag is given) and the filename is printed +to standard output. +.Sh OPTIONS +.Bl -tag -width indent +The available options are as follows: +.It Fl u +Operate in +.Dq unsafe +mode. The temp file will be unlinked before +.Nm +exits. This is slightly better than +.Fn mktemp 3 +but still introduces a race condition. Use of this +option is not encouraged. +.It Fl q +Fail silently if an error occurs. This is useful if +a script does not want error output to go to standard error. +.Sh RETURN VALUES +The +.Nm +utility +exits with a value of 0 on success, and 1 on failure. +.Sh EXAMPLES +The following +.Xr sh 1 +fragment illustrates a simple use of +.Nm +where the script should quit if it cannot get a safe +temporary file. +.Bd -literal -offset indent +TMPFILE=`mktemp /tmp/$0.XXXXXX` || exit 1 +echo "program output" >> $TMPFILE +.Ed +.Pp +In this case, we want the script to catch the error itself. +.Bd -literal -offset indent +TMPFILE=`mktemp -s /tmp/$0.XXXXXX` +if [ $? ne 0 ]; then + echo "$0: Can't create temp file, exiting..." + exit 1 +fi +.Ed +.Pp +Note that one can also check to see that $TMPFILE is +zero length instead of checking $?. This would allow +the check to be done later one in the script (since +$? would get clobbered by the next shell command). +.Sh SEE ALSO +.Xr mkstemp 3 , +.Xr mktemp 3 +.Sh HISTORY +The +.Nm +utility appeared in +.Bx Open . diff --git a/usr.bin/mktemp/mktemp.c b/usr.bin/mktemp/mktemp.c new file mode 100644 index 00000000000..666fd4f00b1 --- /dev/null +++ b/usr.bin/mktemp/mktemp.c @@ -0,0 +1,97 @@ +/* $OpenBSD: mktemp.c,v 1.1 1996/11/21 07:59:33 millert Exp $ */ + +/* + * Copyright (c) 1996 Todd C. Miller <Todd.Miller@courtesan.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Todd C. Miller. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef lint +static char rcsid[] = "$OpenBSD: mktemp.c,v 1.1 1996/11/21 07:59:33 millert Exp $"; +#endif /* not lint */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <err.h> + +extern char *__progname; + +void +usage() +{ + (void) fprintf(stderr, "Usage: %s [-u] [-q] template\n", __progname); + exit(1); +} + +int +main(argc, argv) + int argc; + char **argv; +{ + char *template; + int ch, uflag = 0, qflag = 0; + + while ((ch = getopt(argc, argv, "uq")) != -1) + switch(ch) { + case 'u': + uflag = 1; + break; + case 'q': + qflag = 1; + break; + case '?': + default: + usage(); + } + + if (argc - optind != 1) + usage(); + + if ((template = strdup(argv[optind])) == NULL) { + if (qflag) + exit(1); + else + errx(1, "Cannot allocate memory"); + } + + if (mkstemp(template) < 0) { + if (qflag) + exit(1); + else + err(1, "Cannot create temp file"); + } + + if (uflag) + (void) unlink(template); + + (void) puts(template); + free(template); + + exit(0); +} |