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| author | brooks <brooks@FreeBSD.org> | 2016-12-21 22:53:10 +0000 |
|---|---|---|
| committer | brooks <brooks@FreeBSD.org> | 2016-12-21 22:53:10 +0000 |
| commit | 4fc26602bbed6375dbbdc247a7dcdc73b205cf7e (patch) | |
| tree | d7f1217ef73bb65ac28bccac167445dabfcce306 /bin/df | |
| parent | 29f6641a17eb9e7fafb70f8d060763101600cd79 (diff) | |
| download | FreeBSD-src-4fc26602bbed6375dbbdc247a7dcdc73b205cf7e.zip FreeBSD-src-4fc26602bbed6375dbbdc247a7dcdc73b205cf7e.tar.gz | |
MFC r310088, r310090, r310095
r310088:
Put the undocumented df feature of mounting filesystems from device
nodes
under an ifdef. Leave enabled.
Reviewed by: cem
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D8513
r310090:
Mount filesystems without executable permissions since they should never
be used.
Reviewed by: cem
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D8513
r310095:
Use nmount(2) rather than the obsolete mount(2).
Reviewed by: cem
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D8513
Diffstat (limited to 'bin/df')
| -rw-r--r-- | bin/df/Makefile | 3 | ||||
| -rw-r--r-- | bin/df/df.c | 41 |
2 files changed, 40 insertions, 4 deletions
diff --git a/bin/df/Makefile b/bin/df/Makefile index 8f9f528..c054d29 100644 --- a/bin/df/Makefile +++ b/bin/df/Makefile @@ -10,6 +10,9 @@ SRCS= df.c vfslist.c CFLAGS+= -I${MOUNT} +CFLAGS+= -DMOUNT_CHAR_DEVS +SRCS+= getmntopts.c + LIBADD= xo util .include <bsd.prog.mk> diff --git a/bin/df/df.c b/bin/df/df.c index f8d43bf9..9559e4a 100644 --- a/bin/df/df.c +++ b/bin/df/df.c @@ -50,10 +50,15 @@ __FBSDID("$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 <libutil.h> #include <locale.h> +#ifdef MOUNT_CHAR_DEVS +#include <mntopts.h> +#endif #include <stdint.h> #include <stdio.h> #include <stdlib.h> @@ -98,7 +103,9 @@ 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 int main(int argc, char *argv[]) @@ -107,11 +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; - char *mntpath, *mntpt; +#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, ""); @@ -224,6 +241,7 @@ main(int argc, char *argv[]) rv = 1; continue; } +#ifdef MOUNT_CHAR_DEVS } else if (S_ISCHR(stbuf.st_mode)) { if ((mntpt = getmntpt(*argv)) == NULL) { mdev.fspec = *argv; @@ -240,9 +258,23 @@ main(int argc, char *argv[]) free(mntpath); continue; } - if (mount(fstype, mntpt, MNT_RDONLY, - &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); @@ -261,6 +293,7 @@ main(int argc, char *argv[]) free(mntpath); continue; } +#endif } else mntpt = *argv; |
