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Introduce -a [enable|disable] and -l [enable|disable] flags to the tunefs

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command, permitting it to set FS_ACLS and FS_MULTILABEL administrative
flags on UFS file systems.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
This commit is contained in:
Robert Watson 2002-10-14 19:52:12 +00:00
parent e04a020067
commit 289e09ee73
2 changed files with 73 additions and 7 deletions
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6
sbin/tunefs/tunefs.8
View File

@ -40,9 +40,11 @@
.Nd tune up an existing file system
.Sh SYNOPSIS
.Nm
.Op Fl a Cm enable | disable
.Op Fl A
.Op Fl e Ar maxbpg
.Op Fl f Ar avgfilesize
.Op Fl l Ar enable | disable
.Op Fl m Ar minfree
.Op Fl n Cm enable | disable
.Op Fl o Cm space | time
@ -63,6 +65,8 @@ it must be downgraded to read-only or unmounted.
The parameters which are to be changed are indicated by the flags
given below:
.Bl -tag -width indent
.It Fl a Cm enable | disable
Turn on/off the administrative ACL enable flag.
.It Fl A
The file system has several backups of the super-block.
Specifying
@ -86,6 +90,8 @@ For file systems with exclusively large files,
this parameter should be set higher.
.It Fl f Ar avgfilesize
Specify the expected average file size.
.It Fl l Cm enable | disable
Turn on/off MAC multilabel flag.
.It Fl m Ar minfree
Specify the percentage of space held back
from normal users; the minimum free space threshold.

74
sbin/tunefs/tunefs.c
View File

@ -93,12 +93,12 @@ main(argc, argv)
char *special;
const char *name;
struct stat st;
int Aflag = 0, active = 0;
int eflag = 0, fflag = 0, mflag = 0;
int Aflag = 0, active = 0, aflag = 0;
int eflag = 0, fflag = 0, lflag = 0, mflag = 0;
int nflag = 0, oflag = 0, pflag = 0, sflag = 0;
int evalue = 0, fvalue = 0;
int mvalue = 0, ovalue = 0, svalue = 0;
char *nvalue = NULL;
char *avalue = NULL, *lvalue = NULL, *nvalue = NULL;
struct fstab *fs;
const char *chg[2];
char device[MAXPATHLEN];
@ -109,8 +109,18 @@ main(argc, argv)
if (argc < 3)
usage();
found_arg = 0; /* at least one arg is required */
while ((ch = getopt(argc, argv, "Ae:f:m:n:o:ps:")) != -1)
while ((ch = getopt(argc, argv, "a:Ae:f:l:m:n:o:ps:")) != -1)
switch (ch) {
case 'a':
found_arg = 1;
name = "ACLs";
avalue = optarg;
if (strcmp(avalue, "enable") && strcmp(avalue, "disable")) {
errx(10, "bad %s (options are %s)", name,
"`enable' or `disable'");
}
aflag = 1;
break;
case 'A':
found_arg = 1;
Aflag++;
@ -131,6 +141,16 @@ main(argc, argv)
errx(10, "%s must be >= 1 (was %s)", name, optarg);
fflag = 1;
break;
case 'l':
found_arg = 1;
name = "multilabel MAC file system";
lvalue = optarg;
if (strcmp(lvalue, "enable") && strcmp(lvalue, "disable")) {
errx(10, "bad %s (options are %s)", name,
"`enable' or `disable'");
}
lflag = 1;
break;
case 'm':
found_arg = 1;
name = "minimum percentage of free space";
@ -213,6 +233,26 @@ main(argc, argv)
printfs();
exit(0);
}
if (aflag) {
name = "ACLs";
if (strcmp(avalue, "enable") == 0) {
if (sblock.fs_flags & FS_ACLS) {
warnx("%s remains unchanged as enabled", name);
} else {
sblock.fs_flags |= FS_ACLS;
warnx("%s set", name);
}
} else if (strcmp(avalue, "disable") == 0) {
if ((~sblock.fs_flags & FS_ACLS) ==
FS_ACLS) {
warnx("%s remains unchanged as disabled",
name);
} else {
sblock.fs_flags &= ~FS_ACLS;
warnx("%s set", name);
}
}
}
if (eflag) {
name = "maximum blocks per file in a cylinder group";
if (sblock.fs_maxbpg == evalue) {
@ -235,6 +275,26 @@ main(argc, argv)
sblock.fs_avgfilesize = fvalue;
}
}
if (lflag) {
name = "multilabel";
if (strcmp(lvalue, "enable") == 0) {
if (sblock.fs_flags & FS_MULTILABEL) {
warnx("%s remains unchanged as enabled", name);
} else {
sblock.fs_flags |= FS_MULTILABEL;
warnx("%s set", name);
}
} else if (strcmp(lvalue, "disable") == 0) {
if ((~sblock.fs_flags & FS_MULTILABEL) ==
FS_MULTILABEL) {
warnx("%s remains unchanged as disabled",
name);
} else {
sblock.fs_flags &= ~FS_MULTILABEL;
warnx("%s set", name);
}
}
}
if (mflag) {
name = "minimum percentage of free space";
if (sblock.fs_minfree == mvalue) {
@ -317,9 +377,9 @@ void
usage()
{
fprintf(stderr, "%s\n%s\n%s\n",
"usage: tunefs [-A] [-e maxbpg] [-f avgfilesize] [-m minfree]",
" [-n enable | disable] [-o space | time] [-p] [-s avgfpdir]",
" special | filesystem");
"usage: tunefs [-a enable | disable] [-A] [-e maxbpg] [-f avgfilesize]",
" [-l enable | disable] [-m minfree] [-n enable | disable]",
" [-o space | time] [-p] [-s avgfpdir] special | filesystem");
exit(2);
}