CVS log for src/sbin/mount_overlay/mount_overlay.c

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Keyword substitution: kv
Default branch: MAIN

Refactor remaining mount_* commands to use the common pathadj()
function for resolving paths.

Make pathadj() no longer warn about symlinks. Symlinks in /dev are
regularly used in several places like LVM . The warning was also
only visible when calling a mount_* command directly as mount(8)
itself would resolve the path witout warning before passing it to
a mount_* command.

Use __dead

Sync with HEAD.

Sync with wrstuden-revivesa-base-2.

Remove the \n and tabs from the __COPYRIGHT() strings.
(Tweak some to use a consistent format.)

Make all mount(2) return value error checks against -1.  Some file
systems just checked != 0, breaking MNT_GETARGS.  Others worked with < 0,
but make them check against -1 too for consistency.  And sprinkle some
stylish line wrapping where appropriate.

Add additional 'sizeof args' parameter to mount(2).

use MOPT_NULL

Always check the results of getmntopts() and free them.

Kill __P(), use ANSI function declarations; WARNS=3.

Fix PR#3617 and PR#3205: call realpath to convert mount points and paths to
device nodes into absolute paths before using them.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22308, verified by myself.

use <> rather than "" for #include mntopts.h

MNT_GETARGS support

make the code includable into other programs:
* make static all symbols which do not need to be exported
* rename main() to mount_FOO()
* new main() now just calls mount_FOO(), main() is only compiled in if
  MOUNT_NOMAIN is not defined
* a_gid(), a_uid() and a_mask() were put into ../mount/fattr.[ch], local
  versions removed

Add mount_overlay.