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Add a deprecation warning when using the feature which mounts devices

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to see how much space it on them.

Adjust MOUNT_CHAR_DEVS to allow the free space of already mounted
devices to be displayed and report an appropriate error if the
device isn't mounted.

Reviewed by:	cem
MFC after:	1 week
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D8801
This commit is contained in:
Brooks Davis 2018-02-10 00:22:25 +00:00
parent bc55f7298e
commit e3e9432478
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=329092
1 changed files with 8 additions and 2 deletions
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10
bin/df/df.c
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@ -254,9 +254,11 @@ main(int argc, char *argv[])
rv = 1;
continue;
}
#ifdef MOUNT_CHAR_DEVS
} 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) {
@ -305,8 +307,12 @@ main(int argc, char *argv[])
(void)rmdir(mntpt);
free(mntpath);
continue;
}
#else
xo_warnx("%s: not mounted", *argv);
rv = 1;
continue;
#endif
}
} else
mntpt = *argv;