with the same name exists, delete that directory first, before performing
the copy. This ensures that mv(1) across devices follows the semantics
of rename(2), as required by POSIX.
This change could introduce the potential of data loss, even if the
copy fails, violating the atomicity properties of rename(2). This is
(mostly) mitigated by first renaming the destination and obliterating
it only after a succesfull copy.
The above logic also led to the introduction of code that will cleanup
the results of a partial copy, if a cross-device copy fails.
PR: bin/118367
MFC after: 1 month
This includes adding support for ACLs into cp(1) and mv(1) userspace
utilities.
For mv(1), if _PC_ACL_EXTENDED is in effect for the source AND destination
operands, the destination file's ACLs shall reflect the source.
For cp(1), if _PC_ACL_EXTENDED is in effect for both source and destination
operands, and -p has been specified, the ACLs from the source shall be
preserved on the destination.
MFC after: 1 month
a "--" argument after the options so filenames with leading dashes are
handled correctly.
PR: 39318
Submitted by: Serge van den Boom <svdb@stack.nl>
MFC after: 1 week
Move group_from_gid to grp.h
Remove from stdlib.h
Make the prototypes match the code
Fix rm and mv to include new files.
NetBSD has these defined in those files, and others too that I've not
done.
Approved by: terminal room kabal
Reviewed by: jhb, phk
o Old-style K&R declarations have been converted to new C89 style
o register has been removed
o prototype for main() has been removed (gcc3 makes it an error)
o int main(int argc, char *argv[]) is the preferred main definition.
o Attempt to not break style(9) conformance for declarations more than
they already are.
on different file systems.
PR: bin/12375
Submitted by: Takashi SHIRAI <shirai@nintendo.co.jp>
No response by: steve
No problem with: building 5-current world
execvp() in the child branch of a vfork(). Changed to use fork()
instead.
Some of these (mv, find, apply, xargs) might benefit greatly from
being rewritten to use vfork() properly.
PR: Loosely related to bin/8252
Approved by: jkh and bde
> Error out if someone tries to mv a mount point. Old behavior was to
> move all files contained in the mounted filesystem to the dest. dir
> which could be quite nasty. Personally, I think rename(2) should
> return EPERM or EINVAL instead of EXDEV.
Obtained from: OpenBSD mv.c rev 1.6 by Todd Miller <millert@openbsd.org>
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
all flag variables initialized with zero
respond `Y' is equal to `y'
update usage string
prompt only if source exist
ignore -i option if file descriptor stdin not refers to a valid
terminal type device
`mv foo/ ../..' to `mv foo/ ../../foo/', not to `mv foo/ ../../'. The
latter caused a panic. Before the trailing slash changes in the kernel,
the trailing slashes caused the rename() for this mv to fail earlier, so
there was no panic in 2.0.
Fixes part of PR 760.
