Module Name: src
Committed By: mrg
Date: Thu Jan 25 02:42:17 UTC 2024
Modified Files:
src/sbin/blkdiscard: blkdiscard.8 blkdiscard.c
Log Message:
blkdiscard: avoid asserting when passed a bsd disklabel raw device
PR#57856 shows when using blkdiscard on eg, /dev/ld0 it asserts because
'0' is not between 'a' and 'p'. switch this to using DISKPART() on the
returned st_rdev, so it works on 'ld0c' or 'ld0' (rawpart=2.)
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/sbin/blkdiscard/blkdiscard.8 \
src/sbin/blkdiscard/blkdiscard.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sbin/blkdiscard/blkdiscard.8
diff -u src/sbin/blkdiscard/blkdiscard.8:1.2 src/sbin/blkdiscard/blkdiscard.8:1.3
--- src/sbin/blkdiscard/blkdiscard.8:1.2 Sat Oct 15 21:53:21 2022
+++ src/sbin/blkdiscard/blkdiscard.8 Thu Jan 25 02:42:17 2024
@@ -1,4 +1,4 @@
-.\" $NetBSD: blkdiscard.8,v 1.2 2022/10/15 21:53:21 andvar Exp $
+.\" $NetBSD: blkdiscard.8,v 1.3 2024/01/25 02:42:17 mrg Exp $
.\"
.\" Copyright (c) 2022 Matthew R. Green
.\" All rights reserved.
@@ -24,7 +24,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd February 6, 2022
+.Dd January 13, 2024
.Dt BLKDISCARD 8
.Os
.Sh NAME
@@ -156,7 +156,7 @@ The
.Nm
command was written by
.An Matthew R. Green
-.Aq m...@eterna.com.au .
+.Aq m...@eterna23.net .
.Sh BUGS
The secure erase functionality of the
.Fl s
Index: src/sbin/blkdiscard/blkdiscard.c
diff -u src/sbin/blkdiscard/blkdiscard.c:1.2 src/sbin/blkdiscard/blkdiscard.c:1.3
--- src/sbin/blkdiscard/blkdiscard.c:1.2 Thu Jan 25 02:06:56 2024
+++ src/sbin/blkdiscard/blkdiscard.c Thu Jan 25 02:42:17 2024
@@ -1,7 +1,7 @@
-/* $NetBSD: blkdiscard.c,v 1.2 2024/01/25 02:06:56 mrg Exp $ */
+/* $NetBSD: blkdiscard.c,v 1.3 2024/01/25 02:42:17 mrg Exp $ */
/*
- * Copyright (c) 2019, 2020, 2022 Matthew R. Green
+ * Copyright (c) 2019, 2020, 2022, 2024 Matthew R. Green
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -45,7 +45,6 @@
#include <unistd.h>
#include <err.h>
#include <errno.h>
-#include <assert.h>
#include <stdbool.h>
static bool secure = false;
@@ -53,7 +52,7 @@ static bool zeroout = false;
static char *zeros = NULL;
static unsigned ttywidth = 80;
-#define FDISCARD_VERSION 20220206u
+#define FDISCARD_VERSION 20240113u
static void __dead
usage(const char* msg)
@@ -105,6 +104,7 @@ main(int argc, char *argv[])
int64_t val;
int i;
bool verbose = false;
+ struct stat sb;
/* Default /sbin/blkdiscard to be "run" */
bool norun = strcmp(getprogname(), "blkdiscard") != 0;
@@ -176,6 +176,7 @@ main(int argc, char *argv[])
if (size == 0) {
struct dkwedge_info dkw;
+
if (ioctl(fd, DIOCGWEDGEINFO, &dkw) == 0) {
size = dkw.dkw_size * DEV_BSIZE;
if (verbose)
@@ -184,24 +185,20 @@ main(int argc, char *argv[])
}
}
- if (size == 0) {
+ if (size == 0 && fstat(fd, &sb) != -1) {
struct disklabel dl;
+
if (ioctl(fd, DIOCGDINFO, &dl) != -1) {
- char partchar = name[strlen(name)-1];
- assert(partchar >= 'a' && partchar <= 'p');
- int part = partchar - 'a';
+ unsigned part = DISKPART(sb.st_rdev);
size = (uint64_t)dl.d_partitions[part].p_size *
dl.d_secsize;
if (verbose)
- printf("%s: disklabel size is %lld\n", name,
- (long long)size);
+ printf("%s: partition %u disklabel size is"
+ " %lld\n", name, part, (long long)size);
}
- }
- if (size == 0) {
- struct stat sb;
- if (fstat(fd, &sb) != -1) {
+ if (size == 0) {
size = sb.st_size;
if (verbose)
printf("%s: stat size is %lld\n", name,
