Remove the -C option as it does more harm than good. To be fully
compatible, it would have to (at least): - support the "compat-compat" -T option, - *not* support the -l, -O, and -v options, - default to soft updates being disabled. Worse, the compatibility mode makes it impossible to mount_mfs(8) a file system from fstab(5) with soft updates disabled (-S). [1] Now, the only difference when called as "mount_mfs" or "mfs" (as opposed to "mdmfs") is that the file mode of the mount point is set by default to 01777. All options available to mdmfs(8) are also available to mount_mfs(8); the -C option is still recognized but ignored for backward compatibility. PR: bin/98860 [1] MFC after: 2 weeks
This commit is contained in:
Ruslan Ermilov
parent
8cd5dc08c3
commit
957d7c8f9c
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=163952
@ -25,7 +25,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd October 1, 2006
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.Dd November 3, 2006
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.Dt MDMFS 8
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.Os
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.Sh NAME
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@ -56,26 +56,6 @@ driver
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.Op Fl w Ar user : Ns Ar group
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.Ar md-device
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.Ar mount-point
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.Nm
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.Fl C
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.Op Fl lNU
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.Op Fl a Ar maxcontig
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.Op Fl b Ar block-size
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.Op Fl c Ar cylinders
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.Op Fl d Ar rotdelay
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.Op Fl E Ar path-mdconfig
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.Op Fl e Ar maxbpg
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.Op Fl F Ar file
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.Op Fl f Ar frag-size
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.Op Fl i Ar bytes
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.Op Fl m Ar percent-free
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.Op Fl n Ar rotational-positions
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.Op Fl O Ar optimization
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.Op Fl o Ar mount-options
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.Op Fl s Ar size
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.Op Fl v Ar version
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.Ar md-device
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.Ar mount-point
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.Sh DESCRIPTION
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The
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.Nm
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@ -134,12 +114,6 @@ out before forcing a rotational delay
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option).
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.It Fl b Ar block-size
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The block size of the file system, in bytes.
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.It Fl C
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Enable full compatibility mode with
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.Xr mount_mfs 8 .
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See the
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.Sx COMPATIBILITY
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section for more information.
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.It Fl c Ar cylinders
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The number of cylinders per cylinder group in the file system.
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.It Fl D
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@ -250,7 +224,7 @@ backed disks
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.Pq Dv MD_MALLOC .
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.It Fl U
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Enable soft-updates on the file system.
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This is the default, even in compatibility mode, and is accepted only
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This is the default, and is accepted only
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for compatibility.
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It is only really useful to negate the
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.Fl S
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@ -337,19 +311,16 @@ do not use soft-updates on it and mount it
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.Sh COMPATIBILITY
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The
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.Nm
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utility, while designed to be fully compatible with
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utility, while designed to be compatible with
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.Xr mount_mfs 8 ,
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can be useful by itself.
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Since
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.Xr mount_mfs 8
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had some silly defaults, a
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.Dq full compatibility
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.Dq compatibility
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mode is provided for the case where bug-to-bug compatibility is desired.
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.Pp
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Full compatibility is enabled with the
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.Fl C
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flag,
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or by starting
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Compatibility is enabled by starting
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.Nm
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with the name
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.Li mount_mfs
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@ -357,17 +328,14 @@ or
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.Li mfs
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(as returned by
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.Xr getprogname 3 ) .
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In this mode, only the options which would be accepted by
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.Xr mount_mfs 8
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are valid.
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Furthermore, the following behavior, as done by
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In this mode, the following behavior, as done by
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.Xr mount_mfs 8 ,
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is duplicated:
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.Bl -bullet -offset indent
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.It
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The file mode of
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.Ar mount-point
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is set to
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is set by default to
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.Li 01777
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as if
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.Fl p Ar 1777
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@ -61,7 +61,6 @@ struct mtpt_info {
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bool mi_have_mode;
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};
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static bool compat; /* Full compatibility with mount_mfs? */
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static bool debug; /* Emit debugging information? */
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static bool loudsubs; /* Suppress output from helper programs? */
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static bool norun; /* Actually run the helper programs? */
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@ -119,8 +118,11 @@ main(int argc, char **argv)
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/* If we were started as mount_mfs or mfs, imply -C. */
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if (strcmp(getprogname(), "mount_mfs") == 0 ||
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strcmp(getprogname(), "mfs") == 0)
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compat = true;
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strcmp(getprogname(), "mfs") == 0) {
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/* Make compatibility assumptions. */
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mi.mi_mode = 01777;
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mi.mi_have_mode = true;
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}
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while ((ch = getopt(argc, argv,
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"a:b:Cc:Dd:E:e:F:f:hi:LlMm:Nn:O:o:Pp:Ss:t:Uv:w:X")) != -1)
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@ -132,16 +134,12 @@ main(int argc, char **argv)
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argappend(&newfs_arg, "-b %s", optarg);
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break;
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case 'C':
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if (compat)
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usage();
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compat = true;
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/* Ignored for compatibility. */
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break;
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case 'c':
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argappend(&newfs_arg, "-c %s", optarg);
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break;
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case 'D':
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if (compat)
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usage();
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detach = false;
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break;
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case 'd':
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@ -170,8 +168,6 @@ main(int argc, char **argv)
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argappend(&newfs_arg, "-i %s", optarg);
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break;
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case 'L':
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if (compat)
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usage();
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loudsubs = true;
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break;
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case 'l':
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@ -187,8 +183,6 @@ main(int argc, char **argv)
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argappend(&newfs_arg, "-m %s", optarg);
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break;
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case 'N':
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if (compat)
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usage();
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norun = true;
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break;
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case 'n':
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@ -201,13 +195,9 @@ main(int argc, char **argv)
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argappend(&mount_arg, "-o %s", optarg);
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break;
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case 'P':
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if (compat)
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usage();
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newfs = false;
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break;
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case 'p':
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if (compat)
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usage();
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if ((set = setmode(optarg)) == NULL)
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usage();
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mi.mi_mode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO);
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@ -215,8 +205,6 @@ main(int argc, char **argv)
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free(set);
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break;
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case 'S':
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if (compat)
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usage();
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softdep = false;
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break;
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case 's':
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@ -229,13 +217,9 @@ main(int argc, char **argv)
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argappend(&newfs_arg, "-O %s", optarg);
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break;
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case 'w':
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if (compat)
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usage();
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extract_ugid(optarg, &mi);
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break;
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case 'X':
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if (compat)
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usage();
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debug = true;
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break;
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default:
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@ -246,12 +230,6 @@ main(int argc, char **argv)
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if (argc < 2)
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usage();
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/* Make compatibility assumptions. */
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if (compat) {
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mi.mi_mode = 01777;
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mi.mi_have_mode = true;
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}
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/* Derive 'unit' (global). */
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unitstr = argv[0];
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if (strncmp(unitstr, "/dev/", 5) == 0)
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@ -671,23 +649,12 @@ run(int *ofd, const char *cmdline, ...)
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static void
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usage(void)
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{
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const char *name;
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if (compat)
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name = getprogname();
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else
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name = "mdmfs";
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if (!compat)
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fprintf(stderr,
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fprintf(stderr,
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"usage: %s [-DLlMNPSUX] [-a maxcontig] [-b block-size] [-c cylinders]\n"
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"\t[-d rotdelay] [-E path-mdconfig] [-e maxbpg] [-F file] [-f frag-size]\n"
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"\t[-i bytes] [-m percent-free] [-n rotational-positions] [-O optimization]\n"
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"\t[-o mount-options] [-p permissions] [-s size] [-v version]\n"
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"\t[-w user:group] md-device mount-point\n", name);
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fprintf(stderr,
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"usage: %s -C [-lNU] [-a maxcontig] [-b block-size] [-c cylinders]\n"
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"\t[-d rotdelay] [-E path-mdconfig] [-e maxbpg] [-F file] [-f frag-size]\n"
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"\t[-i bytes] [-m percent-free] [-n rotational-positions] [-O optimization]\n"
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"\t[-o mount-options] [-s size] [-v version] md-device mount-point\n", name);
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"\t[-w user:group] md-device mount-point\n", getprogname());
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exit(1);
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}
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