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Use mkstemp(3) to avoid /tmp race.

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This commit is contained in:
Tim J. Robbins 2002-05-29 14:23:10 +00:00
parent 328b06b929
commit 5204b700b3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=97460
1 changed files with 4 additions and 4 deletions
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8
usr.bin/gencat/gencat.c
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@ -36,6 +36,7 @@ __FBSDID("$FreeBSD$");
#include <sys/file.h>
#include <sys/stat.h>
#include <err.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -136,7 +137,7 @@ main(int argc, char *argv[])
static void
writeIfChanged(char *fname, int lang, int orConsts)
{
char tmpname[32];
char tmpname[] = _PATH_TMP"/gencat.XXXXXX";
char buf[BUFSIZ], tbuf[BUFSIZ], *cptr, *tptr;
int fd, tfd;
int diff = FALSE;
@ -153,9 +154,8 @@ writeIfChanged(char *fname, int lang, int orConsts)
}
/* If it does exist, create a temp file for now */
sprintf(tmpname, "/tmp/gencat.%d", (int) getpid());
if ((tfd = open(tmpname, O_RDWR|O_CREAT, 0666)) < 0)
errx(1, "unable to open temporary file: %s", tmpname);
if ((tfd = mkstemp(tmpname)) < 0)
err(1, "mkstemp");
unlink(tmpname);
/* Write to the temp file and rewind */