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df: Remove support for mounting devices

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This was marked deprecated in r329092, over two and a half years ago.
This functionality is also buggy per PR 237368.

PR:		237368
Reviewed by:	brooks, cem, emaste, imp
Differential Revision:	https://reviews.freebsd.org/D27197
This commit is contained in:
Mark Johnston 2020-11-13 16:47:42 +00:00
parent ec26a84475
commit 1740c2dbb6
3 changed files with 5 additions and 77 deletions
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3
bin/df/Makefile
View File

@ -10,9 +10,6 @@ SRCS= df.c vfslist.c
CFLAGS+= -I${MOUNT}
CFLAGS+= -DMOUNT_CHAR_DEVS
SRCS+= getmntopts.c
LIBADD= xo util
.include <bsd.prog.mk>

1
bin/df/df.1
View File

@ -48,6 +48,7 @@ The
.Nm
utility
displays statistics about the amount of free disk space on the specified
mounted
.Ar file system
or on the file system of which
.Ar file

78
bin/df/df.c
View File

@ -52,16 +52,10 @@ __FBSDID("$FreeBSD$");
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/sysctl.h>
#ifdef MOUNT_CHAR_DEVS
#include <ufs/ufs/ufsmount.h>
#endif
#include <err.h>
#include <getopt.h>
#include <libutil.h>
#include <locale.h>
#ifdef MOUNT_CHAR_DEVS
#include <mntopts.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
@ -106,9 +100,6 @@ imax(int a, int b)
static int aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag;
static int thousands;
#ifdef MOUNT_CHAR_DEVS
static struct ufs_args mdev;
#endif
static const struct option long_options[] =
{
@ -123,21 +114,11 @@ main(int argc, char *argv[])
struct statfs statfsbuf, totalbuf;
struct maxwidths maxwidths;
struct statfs *mntbuf;
#ifdef MOUNT_CHAR_DEVS
struct iovec *iov = NULL;
#endif
const char *fstype;
#ifdef MOUNT_CHAR_DEVS
char *mntpath;
char errmsg[255] = {0};
#endif
char *mntpt;
const char **vfslist;
int i, mntsize;
int ch, rv;
#ifdef MOUNT_CHAR_DEVS
int iovlen = 0;
#endif
fstype = "ufs";
(void)setlocale(LC_ALL, "");
@ -255,66 +236,15 @@ main(int argc, char *argv[])
continue;
}
} else if (S_ISCHR(stbuf.st_mode)) {
if ((mntpt = getmntpt(*argv)) == NULL) {
#ifdef MOUNT_CHAR_DEVS
xo_warnx(
"df on unmounted devices is deprecated");
mdev.fspec = *argv;
mntpath = strdup("/tmp/df.XXXXXX");
if (mntpath == NULL) {
xo_warn("strdup failed");
rv = 1;
continue;
}
mntpt = mkdtemp(mntpath);
if (mntpt == NULL) {
xo_warn("mkdtemp(\"%s\") failed", mntpath);
rv = 1;
free(mntpath);
continue;
}
if (iov != NULL)
free_iovec(&iov, &iovlen);
build_iovec_argf(&iov, &iovlen, "fstype", "%s",
fstype);
build_iovec_argf(&iov, &iovlen, "fspath", "%s",
mntpath);
build_iovec_argf(&iov, &iovlen, "from", "%s",
*argv);
build_iovec(&iov, &iovlen, "errmsg", errmsg,
sizeof(errmsg));
if (nmount(iov, iovlen,
MNT_RDONLY|MNT_NOEXEC) < 0) {
if (errmsg[0])
xo_warn("%s: %s", *argv,
errmsg);
else
xo_warn("%s", *argv);
rv = 1;
(void)rmdir(mntpt);
free(mntpath);
continue;
} else if (statfs(mntpt, &statfsbuf) == 0) {
statfsbuf.f_mntonname[0] = '\0';
prtstat(&statfsbuf, &maxwidths);
if (cflag)
addstat(&totalbuf, &statfsbuf);
} else {
xo_warn("%s", *argv);
rv = 1;
}
(void)unmount(mntpt, 0);
(void)rmdir(mntpt);
free(mntpath);
continue;
#else
mntpt = getmntpt(*argv);
if (mntpt == NULL) {
xo_warnx("%s: not mounted", *argv);
rv = 1;
continue;
#endif
}
} else
} else {
mntpt = *argv;
}
/*
* Statfs does not take a `wait' flag, so we cannot