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[src/trunk]: src/bin/df Print the wedge name with -W instead of mntfrom
details: https://anonhg.NetBSD.org/src/rev/10b6e3f674d2
branches: trunk
changeset: 454491:10b6e3f674d2
user: christos <christos%NetBSD.org@localhost>
date: Wed Sep 18 20:14:44 2019 +0000
description:
Print the wedge name with -W instead of mntfrom
diffstat:
bin/df/df.1 | 12 ++++-
bin/df/df.c | 123 +++++++++++++++++++++++++++++++++++++++++------------------
2 files changed, 95 insertions(+), 40 deletions(-)
diffs (truncated from 342 to 300 lines):
diff -r 5b65756c8dc7 -r 10b6e3f674d2 bin/df/df.1
--- a/bin/df/df.1 Wed Sep 18 18:46:00 2019 +0000
+++ b/bin/df/df.1 Wed Sep 18 20:14:44 2019 +0000
@@ -1,4 +1,4 @@
-.\" $NetBSD: df.1,v 1.49 2018/08/26 23:34:52 sevan Exp $
+.\" $NetBSD: df.1,v 1.50 2019/09/18 20:14:44 christos Exp $
.\"
.\" Copyright (c) 1989, 1990, 1993
.\" The Regents of the University of California. All rights reserved.
@@ -29,7 +29,7 @@
.\"
.\" @(#)df.1 8.2 (Berkeley) 1/13/92
.\"
-.Dd August 27, 2018
+.Dd September 18, 2019
.Dt DF 1
.Os
.Sh NAME
@@ -37,7 +37,7 @@
.Nd display free disk space
.Sh SYNOPSIS
.Nm
-.Op Fl agln
+.Op Fl aglnW
.Op Fl Ghkm | Fl ihkm | Fl Pk
.Op Fl t Ar type
.Op Ar file | Ar file_system ...
@@ -172,6 +172,12 @@
If a file system is given on the command line that is not of
the specified type, a warning is issued and no information is given on
that file system.
+.It Fl W
+Print the wedge name instead of the mounted from device for wedges.
+The wedge name is prefixed with
+.Dq NAME=
+as in
+.Xr fstab 5 .
.El
.Sh ENVIRONMENT
.Bl -tag -width BLOCKSIZE
diff -r 5b65756c8dc7 -r 10b6e3f674d2 bin/df/df.c
--- a/bin/df/df.c Wed Sep 18 18:46:00 2019 +0000
+++ b/bin/df/df.c Wed Sep 18 20:14:44 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: df.c,v 1.93 2018/08/26 23:34:52 sevan Exp $ */
+/* $NetBSD: df.c,v 1.94 2019/09/18 20:14:44 christos Exp $ */
/*
* Copyright (c) 1980, 1990, 1993, 1994
@@ -45,17 +45,20 @@
#if 0
static char sccsid[] = "@(#)df.c 8.7 (Berkeley) 4/2/94";
#else
-__RCSID("$NetBSD: df.c,v 1.93 2018/08/26 23:34:52 sevan Exp $");
+__RCSID("$NetBSD: df.c,v 1.94 2019/09/18 20:14:44 christos Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/mount.h>
+#include <sys/disk.h>
+#include <sys/ioctl.h>
#include <assert.h>
#include <err.h>
#include <errno.h>
+#include <stdbool.h>
#include <fcntl.h>
#include <locale.h>
#include <util.h>
@@ -66,15 +69,17 @@
#include <util.h>
static char *getmntpt(const char *);
-static void prtstat(struct statvfs *, int);
+static void prtstat(const struct dkwedge_info *, const struct statvfs *,
+ int);
static int selected(const char *, size_t);
static void maketypelist(char *);
static size_t regetmntinfo(struct statvfs **, size_t);
__dead static void usage(void);
+static struct dkwedge_info *getwedgeinfo(const struct statvfs *, size_t);
static void prthumanval(int64_t, const char *);
-static void prthuman(struct statvfs *, int64_t, int64_t);
+static void prthuman(const struct statvfs *, int64_t, int64_t);
-static int aflag, gflag, hflag, iflag, lflag, nflag, Pflag;
+static int aflag, gflag, hflag, iflag, lflag, nflag, Pflag, Wflag;
static long usize;
static char **typelist;
@@ -83,14 +88,15 @@
{
struct stat stbuf;
struct statvfs *mntbuf;
- long mntsize;
- int ch, i, maxwidth, width;
+ struct dkwedge_info *wedge_info;
+ int ch, maxwidth, width;
+ size_t i, mntcount;
char *mntpt;
setprogname(argv[0]);
(void)setlocale(LC_ALL, "");
- while ((ch = getopt(argc, argv, "aGghiklmnPt:")) != -1)
+ while ((ch = getopt(argc, argv, "aGghiklmnPt:W")) != -1)
switch (ch) {
case 'a':
aflag = 1;
@@ -126,6 +132,9 @@
case 'P':
Pflag = 1;
break;
+ case 'W':
+ Wflag = 1;
+ break;
case 't':
if (typelist != NULL)
errx(EXIT_FAILURE,
@@ -154,17 +163,17 @@
argc -= optind;
argv += optind;
- mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
- if (mntsize == 0)
+ mntcount = getmntinfo(&mntbuf, MNT_NOWAIT);
+ if (mntcount == 0)
err(EXIT_FAILURE,
"retrieving information on mounted file systems");
if (*argv == NULL) {
- mntsize = regetmntinfo(&mntbuf, mntsize);
+ mntcount = regetmntinfo(&mntbuf, mntcount);
} else {
- if ((mntbuf = malloc(argc * sizeof(*mntbuf))) == NULL)
+ if ((mntbuf = calloc(argc, sizeof(*mntbuf))) == NULL)
err(EXIT_FAILURE, "can't allocate statvfs array");
- mntsize = 0;
+ mntcount = 0;
for (/*EMPTY*/; *argv != NULL; argv++) {
if (stat(*argv, &stbuf) < 0) {
if ((mntpt = getmntpt(*argv)) == 0) {
@@ -180,46 +189,50 @@
* Statfs does not take a `wait' flag, so we cannot
* implement nflag here.
*/
- if (!statvfs(mntpt, &mntbuf[mntsize]))
+ if (!statvfs(mntpt, &mntbuf[mntcount]))
if (lflag &&
- (mntbuf[mntsize].f_flag & MNT_LOCAL) == 0)
+ (mntbuf[mntcount].f_flag & MNT_LOCAL) == 0)
warnx("Warning: %s is not a local %s",
*argv, "file system");
else if
- (!selected(mntbuf[mntsize].f_fstypename,
- sizeof(mntbuf[mntsize].f_fstypename)))
+ (!selected(mntbuf[mntcount].f_fstypename,
+ sizeof(mntbuf[mntcount].f_fstypename)))
warnx("Warning: %s mounted as a %s %s",
*argv,
- mntbuf[mntsize].f_fstypename,
+ mntbuf[mntcount].f_fstypename,
"file system");
else
- ++mntsize;
+ ++mntcount;
else
warn("%s", *argv);
}
}
+ wedge_info = Wflag ? getwedgeinfo(mntbuf, mntcount) : NULL;
+
maxwidth = 0;
- for (i = 0; i < mntsize; i++) {
- width = (int)strlen(mntbuf[i].f_mntfromname);
+ for (i = 0; i < mntcount; i++) {
+ width = (int)strlen(Wflag && wedge_info[i].dkw_wname[0] ?
+ (const char *)wedge_info[i].dkw_wname :
+ mntbuf[i].f_mntfromname);
if (width > maxwidth)
maxwidth = width;
}
- for (i = 0; i < mntsize; i++)
- prtstat(&mntbuf[i], maxwidth);
+ for (i = 0; i < mntcount; i++)
+ prtstat(&wedge_info[i], &mntbuf[i], maxwidth);
return 0;
}
static char *
getmntpt(const char *name)
{
- size_t mntsize, i;
+ size_t mntcount, i;
struct statvfs *mntbuf;
- mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
- if (mntsize == 0)
+ mntcount = getmntinfo(&mntbuf, MNT_NOWAIT);
+ if (mntcount == 0)
err(EXIT_FAILURE, "Can't get mount information");
- for (i = 0; i < mntsize; i++) {
+ for (i = 0; i < mntcount; i++) {
if (!strcmp(mntbuf[i].f_mntfromname, name))
return mntbuf[i].f_mntonname;
}
@@ -268,7 +281,7 @@
++nextcp;
/* Build an array of that many types. */
- if ((av = typelist = malloc((i + 1) * sizeof(*av))) == NULL)
+ if ((av = typelist = calloc((i + 1), sizeof(*av))) == NULL)
err(EXIT_FAILURE, "can't allocate type array");
av[0] = fslist;
for (i = 1, nextcp = fslist;
@@ -280,23 +293,50 @@
av[i] = NULL;
}
+static struct dkwedge_info *
+getwedgeinfo(const struct statvfs *mntbuf, size_t mntcount)
+{
+ struct dkwedge_info *wi = calloc(mntcount, sizeof(*wi));
+ char buf[1024];
+
+ if (wi == NULL)
+ err(EXIT_FAILURE, "can't allocate wedge info array");
+
+ for (size_t i = 0; i < mntcount; i++) {
+ const char *dname = mntbuf[i].f_mntfromname;
+ const char *rdn = strrchr(dname, '/');
+ if (rdn == NULL) {
+ continue;
+ }
+ rdn++;
+ int fd = opendisk(rdn, O_RDONLY, buf, sizeof(buf), false);
+ if (fd == -1)
+ err(EXIT_FAILURE, "opendisk on `%s' failed", rdn);
+ if (ioctl(fd, DIOCGWEDGEINFO, &wi[i]) == -1) {
+ warn("DIOCGWEDGEINFO for `%s' failed", buf);
+ }
+ close(fd);
+ }
+ return wi;
+}
+
/*
* Make a pass over the filesystem info in ``mntbuf'' filtering out
* filesystem types not in ``fsmask'' and possibly re-stating to get
* current (not cached) info. Returns the new count of valid statvfs bufs.
*/
static size_t
-regetmntinfo(struct statvfs **mntbufp, size_t mntsize)
+regetmntinfo(struct statvfs **mntbufp, size_t mntcount)
{
size_t i, j;
struct statvfs *mntbuf;
if (!lflag && typelist == NULL && aflag)
- return nflag ? mntsize : (size_t)getmntinfo(mntbufp, MNT_WAIT);
+ return nflag ? mntcount : (size_t)getmntinfo(mntbufp, MNT_WAIT);
mntbuf = *mntbufp;
j = 0;
- for (i = 0; i < mntsize; i++) {
+ for (i = 0; i < mntcount; i++) {
if (!aflag && (mntbuf[i].f_flag & MNT_IGNORE) != 0)
continue;
if (lflag && (mntbuf[i].f_flag & MNT_LOCAL) == 0)
@@ -335,7 +375,7 @@
}
static void
-prthuman(struct statvfs *sfsp, int64_t used, int64_t bavail)
+prthuman(const struct statvfs *sfsp, int64_t used, int64_t bavail)
{
prthumanval((int64_t)(sfsp->f_blocks * sfsp->f_frsize), " ");
@@ -356,7 +396,8 @@
* Print out status about a filesystem.
*/
static void
-prtstat(struct statvfs *sfsp, int maxwidth)
+prtstat(const struct dkwedge_info *dkwp, const struct statvfs *sfsp,
+ int maxwidth)
{
static long blocksize;
static int headerlen, timesthrough;
@@ -366,6 +407,14 @@
int64_t used, availblks, inodes;
int64_t bavail;
char pb[64];
+ char mntfromname[sizeof(sfsp->f_mntfromname)];
+
+ if (Wflag && dkwp->dkw_wname[0]) {
+ snprintf(mntfromname, sizeof(mntfromname), "NAME=%s",
+ (const char *)dkwp->dkw_wname);
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