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unlink pmap backing file immediately after opening it, so we don't leave

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a bunch of 128MB turds sitting around in /tmp
This commit is contained in:
jmcneill 2011-08-23 16:16:26 +00:00
parent 16a0338114
commit 0a7c520287
3 changed files with 15 additions and 5 deletions
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3
sys/arch/usermode/include/thunk.h
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@ -1,4 +1,4 @@
/* $NetBSD: thunk.h,v 1.11 2011/08/23 16:09:27 jmcneill Exp $ */
/* $NetBSD: thunk.h,v 1.12 2011/08/23 16:16:26 jmcneill Exp $ */
/*-
* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
@ -68,6 +68,7 @@ ssize_t thunk_pread(int, void *, size_t, off_t);
ssize_t thunk_pwrite(int, const void *, size_t, off_t);
int thunk_fsync(int);
int thunk_mkstemp(char *);
int thunk_unlink(const char *);
int thunk_sigaction(int, const struct sigaction *, struct sigaction *);

7
sys/arch/usermode/usermode/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.23 2011/08/23 15:35:53 reinoud Exp $ */
/* $NetBSD: pmap.c,v 1.24 2011/08/23 16:16:26 jmcneill Exp $ */
/*-
* Copyright (c) 2011 Reinoud Zandijk <reinoud@NetBSD.org>
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.23 2011/08/23 15:35:53 reinoud Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.24 2011/08/23 16:16:26 jmcneill Exp $");
#include "opt_memsize.h"
#include "opt_kmempages.h"
@ -180,6 +180,9 @@ pmap_bootstrap(void)
mem_fh = thunk_mkstemp(mem_name);
if (mem_fh < 0)
panic("pmap_bootstrap: can't create memory file\n");
/* unlink the file so space is freed when we quit */
if (thunk_unlink(mem_name) == -1)
panic("pmap_bootstrap: can't unlink %s", mem_name);
/* file_len is the backing store length, nothing to do with placement */
file_len = 1024 * MEMSIZE;

10
sys/arch/usermode/usermode/thunk.c
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@ -1,4 +1,4 @@
/* $NetBSD: thunk.c,v 1.12 2011/08/23 16:09:27 jmcneill Exp $ */
/* $NetBSD: thunk.c,v 1.13 2011/08/23 16:16:26 jmcneill Exp $ */
/*-
* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: thunk.c,v 1.12 2011/08/23 16:09:27 jmcneill Exp $");
__RCSID("$NetBSD: thunk.c,v 1.13 2011/08/23 16:16:26 jmcneill Exp $");
#include <sys/types.h>
#include <sys/ansi.h>
@ -197,6 +197,12 @@ thunk_mkstemp(char *template)
return mkstemp(template);
}
int
thunk_unlink(const char *path)
{
return unlink(path);
}
int
thunk_sigaction(int sig, const struct sigaction *act, struct sigaction *oact)
{