diff options
author | Corinna Vinschen <corinna@vinschen.de> | 2001-10-16 19:16:02 +0400 |
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committer | Corinna Vinschen <corinna@vinschen.de> | 2001-10-16 19:16:02 +0400 |
commit | 7b46bb01e15fb1d5165a9a6d6f3d03849bc8fa7e (patch) | |
tree | 83a031fd3bf8fb64fcd6b996e22434db61a6992c /winsup | |
parent | 990690655ca59784c81430e7d258fd9a2231b6cb (diff) |
* pathnames.sgml: Add description for new fixed device paths.
Diffstat (limited to 'winsup')
-rw-r--r-- | winsup/doc/ChangeLog | 4 | ||||
-rw-r--r-- | winsup/doc/pathnames.sgml | 80 |
2 files changed, 80 insertions, 4 deletions
diff --git a/winsup/doc/ChangeLog b/winsup/doc/ChangeLog index 1453f37ee..08edb51ec 100644 --- a/winsup/doc/ChangeLog +++ b/winsup/doc/ChangeLog @@ -1,3 +1,7 @@ +Tue Oct 16 17:14:00 2001 Corinna Vinschen <corinna@vinschen.de> + + * pathnames.sgml: Add description for new fixed device paths. + Fri Sep 7 12:47:47 2001 Michael Schaap <cygwin@mscha.com> * how-resources.texinfo: Add some additional words about where to find diff --git a/winsup/doc/pathnames.sgml b/winsup/doc/pathnames.sgml index c2979300a..30cede7ae 100644 --- a/winsup/doc/pathnames.sgml +++ b/winsup/doc/pathnames.sgml @@ -209,7 +209,7 @@ device names is not sufficent. </para> <para>NT/W2K supports raw block special device support for partitions -and drives. The device names for partitions is the drive letter +and drives. The Win32 device name for a partition is the drive letter with leading <filename>\\.\</filename>, so the floppy would be <filename>\\.\A:</filename>, the first partition typically <filename>\\.\C:</filename>. Complete drives (except floppies @@ -219,13 +219,14 @@ is the drive number which you can check in the disk manager. Each drive line has prepended the text "Disk x". </para> -<para>To access tape drives, NT/W2K uses the file name +<para>To access tape drives, NT/W2K uses the Win32 file name <filename>\\.\TAPEx</filename>. For example the first installed tape device is named <filename>\\.\tape0</filename>. </para> -<para>To access those devices you have to mount them and you have to -use the posix name of the device to be recognized by Cygwin. +<para>Up to Cygwin 1.3.3 this is the only way to use those devices. +To access them you have to mount them and you have to use the posix +name of the device to be recognized by Cygwin. The naming convention is simple: The name has to begin with <filename>/dev/</filename> and the rest is as you like. The only exception are tape devices. To identify if the tape device is @@ -248,6 +249,77 @@ include the -b option when mounting these devices to ensure that all file I/O is in "binary mode". </para> +<para> +NT knows another way of accessing these devices. In the internal NT +namespace the devices are using different names. The Win32 names are +only a sort of symbolic link to the NT internal device name. +E.g. the first harddisk is the NT internal device \device\harddisk0\partition0 +or the first partition on the third harddisk is \device\harddisk2\partition1. +The first floppy in the system is \device\floppy0, the first CD-ROM is +\device\cdrom0 and the first tape drive is \device\tape0. +</para> + +<para> +Since Cygwin 1.3.4 these devices are accessible from inside of Cygwin processes +using fixed device names. That means, you don't have to mount the devices +anymore which results in a more cleaner mount table. +</para> + +<para>The new fixed POSIX names are mapped to NT internal devices as +follows:</para> + +<screen> +/dev/st0 \device\tape0, rewind +/dev/nst0 \device\tape0, no-rewind +/dev/st1 \device\tape1 +... + +/dev/fd0 \device\floppy0 +/dev/fd1 \device\floppy1 +... + +/dev/scd0 \device\cdrom0 +/dev/scd1 \device\cdrom1 +... + +/dev/sda \device\harddisk0\partition0 (whole disk) +/dev/sda1 \device\harddisk0\partition1 (first partition) +... +/dev/sda15 \device\harddisk0\partition15 (fifteenth partition) + +/dev/sdb \device\harddisk1\partition0 +/dev/sdb1 \device\harddisk1\partition1 + +[up to] + +/dev/sdl \device\harddisk11\partition0 +/dev/sdl1 \device\harddisk11\partition1 +... +/dev/sdl15 \device\harddisk11\partition15 +</screen> + +<para> +if you don't like these device names, feel free to create symbolic +links as they are created on Linux systems for convenience: +</para> + +<screen> +ln -s /dev/scd0 /dev/cdrom +ln -s /dev/st0 /dev/tape +... +</screen> + +<para> +Note that you can't use the mount table to map from fixed device name +to your own device name or to map from internal NT device name to +your own device name. The following two examples will not work: +</para> + +<screen> +mount -s -f -b /dev/st0 /dev/tape +mount -s -f -b /device/tape0 /dev/tape +</screen> + </sect2> <sect2><title>The .exe extension</title> |