Add `-t' option from Matthew Green, hacked a bit by me.
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mycroft
parent
8f6e962b3e
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720e729421
49
bin/df/df.1
49
bin/df/df.1
@ -30,7 +30,7 @@
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)df.1 8.2 (Berkeley) 1/13/92
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.\" $Id: df.1,v 1.7 1994/09/16 20:59:28 mycroft Exp $
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.\" $Id: df.1,v 1.8 1995/01/13 23:23:41 mycroft Exp $
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.\"
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.Dd January 13, 1994
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.Dt DF 1
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@ -41,20 +41,25 @@
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.Sh SYNOPSIS
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.Nm df
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.Op Fl ikln
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.Op Ar file | Ar filesystem ...
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.Op Fl t Ar type
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.Op Ar file | Ar file_system ...
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.Sh DESCRIPTION
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.Nm Df
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displays statistics about the amount of free disk space on the specified
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.Ar filesystem
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or on the filesystem of which
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.Ar file_system
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or on the file system of which
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.Ar file
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is a part.
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Values are displayed in 512-byte per block block counts.
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If neither a file or a filesystem operand is specified,
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statistics for all mounted filesystems are displayed
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If neither a file or a
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.Ar file_system
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operand is specified,
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statistics for all mounted file systems are displayed
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(subject to the
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.Fl l
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option below).
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and
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.Fl t
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options below).
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.Pp
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The following options are available:
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.Bl -tag -width Ds
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@ -66,17 +71,37 @@ The
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.Fl k
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option causes the numbers to be reported in kilobyte counts.
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.It Fl l
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Display statistics only about mounted filesystems with the MNT_LOCAL
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flag set.
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Display statistics only about mounted file systems with the MNT_LOCAL
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flag set. This option is deprecated by the
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.Fl t\ local
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option, and may be removed in a future release.
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.It Fl n
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Print out the previously obtained statistics from the filesystems.
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Print out the previously obtained statistics from the file systems.
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This option should be used if it is possible that one or more
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filesystems are in a state such that they will not be able to provide
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file systems are in a state such that they will not be able to provide
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statistics without a long delay.
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When this option is specified,
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.Nm df
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will not request new statistics from the filesystems, but will respond
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will not request new statistics from the file systems, but will respond
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with the possibly stale statistics that were previously obtained.
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.It Fl t
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Only print out statistics for file systems of the specified types.
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The follow additional types are recognized:
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all (the default),
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local (all file systems with the MNT_LOCAL flag set),
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ro (all file systems with the MNT_RDONLY flag set),
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and rw (all file systems with the MNT_RDONLY flag clear).
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The string ``no'' may be prepended to a type to get its complement
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(e.g. ``nonfs'' to get non-NFS file systems). The first
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.Fl t
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option overrides the default, additional such options will add to
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(or subtract from) the current set of types; e.g.
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``df -t ufs -t lfs''
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will display statistics for UFS and LFS file systems, and
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``df -t local -t nolfs''
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will display statistics for all
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.Dq local
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file systems except LFS.
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.El
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.Sh ENVIRONMENTAL VARIABLES
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.Bl -tag -width BLOCKSIZE
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115
bin/df/df.c
115
bin/df/df.c
@ -44,7 +44,7 @@ static char copyright[] =
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#ifndef lint
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/*static char sccsid[] = "from: @(#)df.c 8.7 (Berkeley) 4/2/94";*/
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static char rcsid[] = "$Id: df.c,v 1.15 1994/09/16 20:59:29 mycroft Exp $";
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static char rcsid[] = "$Id: df.c,v 1.16 1995/01/13 23:23:43 mycroft Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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@ -63,12 +63,21 @@ int bread __P((off_t, void *, int));
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char *getmntpt __P((char *));
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void prtstat __P((struct statfs *, int));
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void ufs_df __P((char *, int));
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void add_fsmask __P((char *));
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void usage __P((void));
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int iflag, kflag = 0, nflag, lflag;
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struct fstype {
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char *fs_name;
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int fs_no;
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};
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int iflag, kflag, nflag, tflag;
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long blocksize, mntsize;
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struct statfs *mntbuf;
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struct ufs_args mdev;
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struct fstype *fstypes;
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int numfstypes, defmatch = 1;
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int posflags, negflags;
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int
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main(argc, argv)
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@ -81,7 +90,7 @@ main(argc, argv)
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int ch, i;
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char *mntpt;
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while ((ch = getopt(argc, argv, "ikln")) != EOF)
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while ((ch = getopt(argc, argv, "iklnt:")) != -1)
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switch (ch) {
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case 'i':
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iflag = 1;
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@ -91,11 +100,16 @@ main(argc, argv)
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kflag = 1;
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break;
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case 'l':
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lflag = 1;
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add_fsmask("local");
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tflag = 1;
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break;
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case 'n':
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nflag = 1;
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break;
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case 't':
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add_fsmask(optarg);
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tflag = 1;
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break;
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case '?':
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default:
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usage();
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@ -103,8 +117,8 @@ main(argc, argv)
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argc -= optind;
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argv += optind;
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if (*argv && lflag)
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errx(1, "-l does not make sense with list of mount points");
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if (*argv && tflag)
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errx(1, "-l or -t does not make sense with list of mount points");
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mntsize = getmntinfo(&mntbuf, (nflag ? MNT_NOWAIT : MNT_WAIT));
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if (mntsize == 0)
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@ -118,8 +132,7 @@ main(argc, argv)
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if (!*argv) {
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for (i = 0; i < mntsize; i++)
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if (!lflag || mntbuf[i].f_flags & MNT_LOCAL)
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prtstat(&mntbuf[i], maxwidth);
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prtstat(&mntbuf[i], maxwidth);
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exit(0);
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}
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@ -184,6 +197,74 @@ getmntpt(name)
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return (0);
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}
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struct fsflags {
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char *ff_name;
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int ff_pos;
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int ff_neg;
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} fsflags[] = {
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{"local", MNT_LOCAL, 0},
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{"ro", MNT_RDONLY, 0},
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{"rw", 0, MNT_RDONLY},
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};
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void
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add_fsmask(fstype)
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char *fstype;
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{
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int len, no, n;
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len = strlen(fstype);
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if (!bcmp(fstype, "no", 2)) {
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no = 1;
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defmatch = 1;
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len -= 2;
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fstype += 2;
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} else {
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no = 0;
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defmatch = 0;
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}
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for (n = 0; n < sizeof(fsflags) / sizeof(fsflags[0]); n++) {
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if (!bcmp(fstype, fsflags[n].ff_name, len+1)) {
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if (!no) {
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posflags |= fsflags[n].ff_pos;
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posflags &= ~fsflags[n].ff_neg;
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negflags |= fsflags[n].ff_neg;
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negflags &= !fsflags[n].ff_pos;
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} else {
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posflags |= fsflags[n].ff_neg;
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posflags &= ~fsflags[n].ff_pos;
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negflags |= fsflags[n].ff_pos;
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negflags &= ~fsflags[n].ff_neg;
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}
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return;
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}
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}
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if (!bcmp(fstype, "all", len+1)) {
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if (no) {
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(void)fprintf(stderr, "I'm sorry. I can't do that, Dave.\n");
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exit(1);
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} else {
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fstypes = NULL;
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posflags = negflags = 0;
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}
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}
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for (n = 0; n < numfstypes; n++) {
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if (!bcmp(fstype, fstypes[n].fs_name, len+1)) {
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fstypes[n].fs_no = no;
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return;
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}
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}
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numfstypes++;
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fstypes = (struct fstype *) realloc(fstypes, sizeof(struct fstype) * numfstypes);
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fstypes[numfstypes - 1].fs_name = strdup(fstype);
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fstypes[numfstypes - 1].fs_no = no;
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}
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/*
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* Convert statfs returned filesystem size into BLOCKSIZE units.
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* Attempts to avoid overflow for large filesystems.
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@ -203,7 +284,23 @@ prtstat(sfsp, maxwidth)
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static int headerlen, timesthrough;
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static char *header;
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long used, availblks, inodes;
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int i, gotmatch = defmatch;
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if ((sfsp->f_flags & posflags) != posflags)
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return;
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if ((sfsp->f_flags & negflags) != 0)
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return;
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if (numfstypes) {
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for (i = 0; i < numfstypes; i++)
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if (!strcmp(sfsp->f_fstypename, fstypes[i].fs_name)) {
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if (fstypes[i].fs_no)
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return;
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gotmatch = 1;
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break;
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}
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if (!gotmatch)
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return;
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}
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if (maxwidth < 11)
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maxwidth = 11;
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if (++timesthrough == 1) {
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@ -322,6 +419,6 @@ bread(off, buf, cnt)
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void
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usage()
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{
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(void)fprintf(stderr, "usage: df [-ikln] [file | file_system ...]\n");
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(void)fprintf(stderr, "usage: df [-ikln] [-t type] [file | file_system ...]\n");
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exit(1);
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}
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