diff options
| -rw-r--r-- | sbin/mount_msdos/mount_msdos.8 | 67 |
1 files changed, 45 insertions, 22 deletions
diff --git a/sbin/mount_msdos/mount_msdos.8 b/sbin/mount_msdos/mount_msdos.8 index ccc0d1beff0..3e7a00fc814 100644 --- a/sbin/mount_msdos/mount_msdos.8 +++ b/sbin/mount_msdos/mount_msdos.8 @@ -1,4 +1,4 @@ -.\" $OpenBSD: mount_msdos.8,v 1.24 2009/08/07 19:27:27 martynas Exp $ +.\" $OpenBSD: mount_msdos.8,v 1.25 2009/08/09 06:45:49 jmc Exp $ .\" $NetBSD: mount_msdos.8,v 1.10 1996/01/19 21:14:43 leo Exp $ .\" .\" Copyright (c) 1993,1994 Christopher G. Demetriou @@ -29,7 +29,7 @@ .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: August 7 2009 $ +.Dd $Mdocdate: August 9 2009 $ .Dt MOUNT_MSDOS 8 .Os .Sh NAME @@ -47,10 +47,10 @@ .Sh DESCRIPTION The .Nm -command attaches the MS-DOS filesystem residing on +command attaches the MS-DOS file system residing on the device .Ar special -to the global filesystem namespace at the location +to the global file system namespace at the location indicated by .Ar node . This command is invoked by @@ -97,7 +97,7 @@ nor .Fl l are given, .Nm -searches the root directory of the filesystem to +searches the root directory of the file system to be mounted for any existing Windows 95/98 long filenames. If no such entries are found, .Fl s @@ -108,19 +108,9 @@ is assumed. .It Fl m Ar mask Specify the maximum permissions for files and directories in the file system. -(For example, a mask of -.Li 755 -specifies that, by default, the owner should have -read, write, and execute permissions, but -others should only have read and execute permissions. -See -.Xr chmod 1 -for more information about octal file modes.) Only the nine low-order bits of .Ar mask are used. -The default mask is taken from the -directory on which the file system is being mounted. .It Fl o Ar options Use the specified mount .Ar options , @@ -136,7 +126,7 @@ nor .Fl l are given, .Nm -searches the root directory of the filesystem to +searches the root directory of the file system to be mounted for any existing Windows 95/98 long filenames. If no such entries are found, .Fl s @@ -152,7 +142,40 @@ on which the file system is being mounted. .It Fl x If a directory is readable, it inherits the x attribute as well. .El +.Pp +File permissions for FAT file systems are imitated, +since the file system has no real concept of permissions. +The default mask is taken from the +directory on which the file system is being mounted, +except when the +.Fl m +option is used. +FAT does have a +.Dq read only +mode, +in which the writable bit is unset. +If such files are found, +they are marked non-writable; +it can be set using +.Li chmod -w +or unset using +.Li chmod +w . +.Pp +File modes work the same way for directories. +However if a directory is mounted with +.Fl x , +it will inherit the executable bit if it is readable. +This can be useful for making files non-executable +and directories executable: +using +.Li -x -m 644 +will in most cases give permissions of 755 for directories +and 644 for files. +See +.Xr chmod 1 +for more information about octal file modes. .Sh SEE ALSO +.Xr chmod 1 , .Xr mount 2 , .Xr disklabel 5 , .Xr fstab 5 , @@ -172,20 +195,20 @@ and was abandoned in favor of the more aptly named .Nm mount_msdos . .Sh CAVEATS -The maximum file size supported by the MS-DOS filesystem is +The maximum file size supported by the MS-DOS file system is one byte less than 4GB. -This is a FAT filesystem limitation, documented by Microsoft +This is a FAT file system limitation, documented by Microsoft in Knowledge Base article 314463. .Pp -The MS-DOS filesystem (even with long filenames) does not support +The MS-DOS file system (even with long filenames) does not support filenames with trailing dots or spaces. Any such characters will be silently removed before the directory entry is written. -This too is a FAT filesystem limitation. +This too is a FAT file system limitation. .Pp The use of the .Fl 9 -flag could result in damaged filesystems, +flag could result in damaged file systems, albeit the damage is in part taken care of by procedures similar to the ones used in Windows 95/98. .Pp @@ -193,7 +216,7 @@ The default handling for .Fl s and .Fl l -will result in empty filesystems being populated +will result in empty file systems being populated with short filenames only. To generate long filenames on empty DOS file systems use .Fl l . |