Author: kib
Date: Wed Sep 23 12:08:08 2009
New Revision: 197428
URL: http://svn.freebsd.org/changeset/base/197428
Log:
Add per-process osrel node to the procfs, to allow read and set p_osrel
value for the process.
Approved by: des (procfs maintainer)
MFC after: 3 weeks
Added:
head/sys/fs/procfs/procfs_osrel.c (contents, props changed)
Modified:
head/sys/conf/files
head/sys/fs/procfs/procfs.c
head/sys/fs/procfs/procfs.h
head/sys/modules/procfs/Makefile
Modified: head/sys/conf/files
==============================================================================
--- head/sys/conf/files Wed Sep 23 10:12:58 2009 (r197427)
+++ head/sys/conf/files Wed Sep 23 12:08:08 2009 (r197428)
@@ -1792,6 +1792,7 @@ fs/procfs/procfs_ioctl.c optional procfs
fs/procfs/procfs_map.c optional procfs
fs/procfs/procfs_mem.c optional procfs
fs/procfs/procfs_note.c optional procfs
+fs/procfs/procfs_osrel.c optional procfs
fs/procfs/procfs_regs.c optional procfs
fs/procfs/procfs_rlimit.c optional procfs
fs/procfs/procfs_status.c optional procfs
Modified: head/sys/fs/procfs/procfs.c
==============================================================================
--- head/sys/fs/procfs/procfs.c Wed Sep 23 10:12:58 2009 (r197427)
+++ head/sys/fs/procfs/procfs.c Wed Sep 23 12:08:08 2009 (r197428)
@@ -108,7 +108,8 @@ procfs_attr(PFS_ATTR_ARGS)
else if (strcmp(pn->pn_name, "mem") == 0 ||
strcmp(pn->pn_name, "regs") == 0 ||
strcmp(pn->pn_name, "dbregs") == 0 ||
- strcmp(pn->pn_name, "fpregs") == 0)
+ strcmp(pn->pn_name, "fpregs") == 0 ||
+ strcmp(pn->pn_name, "osrel") == 0)
vap->va_mode = 0600;
if (p != NULL) {
@@ -186,6 +187,8 @@ procfs_init(PFS_INIT_ARGS)
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "status", procfs_doprocstatus,
NULL, NULL, NULL, PFS_RD);
+ pfs_create_file(dir, "osrel", procfs_doosrel,
+ procfs_attr, procfs_candebug, NULL, PFS_RDWR);
pfs_create_link(dir, "file", procfs_doprocfile,
NULL, procfs_notsystem, NULL, 0);
Modified: head/sys/fs/procfs/procfs.h
==============================================================================
--- head/sys/fs/procfs/procfs.h Wed Sep 23 10:12:58 2009 (r197427)
+++ head/sys/fs/procfs/procfs.h Wed Sep 23 12:08:08 2009 (r197428)
@@ -39,6 +39,7 @@
#ifdef _KERNEL
int procfs_docurproc(PFS_FILL_ARGS);
+int procfs_doosrel(PFS_FILL_ARGS);
int procfs_doproccmdline(PFS_FILL_ARGS);
int procfs_doprocctl(PFS_FILL_ARGS);
int procfs_doprocdbregs(PFS_FILL_ARGS);
Added: head/sys/fs/procfs/procfs_osrel.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/fs/procfs/procfs_osrel.c Wed Sep 23 12:08:08 2009
(r197428)
@@ -0,0 +1,68 @@
+/*-
+ * Copyright (c) 2009 Konstantin Belousov
+ * 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.
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/sbuf.h>
+#include <sys/uio.h>
+
+#include <fs/pseudofs/pseudofs.h>
+#include <fs/procfs/procfs.h>
+
+int
+procfs_doosrel(PFS_FILL_ARGS)
+{
+ const char *pp;
+ int ov, osrel, i;
+
+ if (uio == NULL)
+ return (EOPNOTSUPP);
+ if (uio->uio_rw == UIO_READ) {
+ sbuf_printf(sb, "%d\n", p->p_osrel);
+ } else {
+ sbuf_trim(sb);
+ sbuf_finish(sb);
+ pp = sbuf_data(sb);
+ osrel = 0;
+ i = sbuf_len(sb);
+ while (i--) {
+ if (*pp < '0' || *pp > '9')
+ return (EINVAL);
+ ov = osrel * 10 + *pp++ - '0';
+ if (ov < osrel)
+ return (EINVAL);
+ osrel = ov;
+ }
+ p->p_osrel = osrel;
+ }
+ return (0);
+}
Modified: head/sys/modules/procfs/Makefile
==============================================================================
--- head/sys/modules/procfs/Makefile Wed Sep 23 10:12:58 2009
(r197427)
+++ head/sys/modules/procfs/Makefile Wed Sep 23 12:08:08 2009
(r197428)
@@ -13,6 +13,7 @@ SRCS+= procfs_ioctl.c
SRCS+= procfs_map.c
SRCS+= procfs_mem.c
SRCS+= procfs_note.c
+SRCS+= procfs_osrel.c
SRCS+= procfs_regs.c
SRCS+= procfs_rlimit.c
SRCS+= procfs_status.c
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