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Use nmount(2) rather than the obsolete mount(2).

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Reviewed by:	cem
MFC after:	1 week
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D8513
This commit is contained in:
brooks 2016-12-14 21:30:44 +00:00
parent 9539e15fc7
commit 7e31d543cd
2 changed files with 29 additions and 3 deletions
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2
bin/df/Makefile
View File

@ -9,7 +9,9 @@ PROG= df
SRCS= df.c vfslist.c
CFLAGS+= -I${MOUNT}
CFLAGS+= -DMOUNT_CHAR_DEVS
SRCS+= getmntopts.c
LIBADD= xo util

30
bin/df/df.c
View File

@ -56,6 +56,9 @@ __FBSDID("$FreeBSD$");
#include <err.h>
#include <libutil.h>
#include <locale.h>
#ifdef MOUNT_CHAR_DEVS
#include <mntopts.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
@ -111,14 +114,21 @@ 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, "");
@ -251,9 +261,23 @@ main(int argc, char *argv[])
free(mntpath);
continue;
}
if (mount(fstype, mntpt, MNT_RDONLY|MNT_NOEXEC,
&mdev) != 0) {
xo_warn("%s", *argv);
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);