Fix depenency on common symbols in sbin.

fsck: Stop defining the same variable concurrently in bss and data

returntosingle was defined in multiple places:

- fsck_lfs/main.c
- fsck_ffs/main.c
- fsck_ext2fs/main.c
- fsck/fsutil.c

Keep the fsutil.c definition as the only one.

Detected during the build of telned with Address Sanitizer (MKSANITIZER).

branches: 1.39.2;
- add or adjust /* FALLTHROUGH */ where appropriate
- add __unreachable() after functions that can return but won't in
this case, and thus can't be marked __dead easily

Remove references to -c flag which was never included.

branches: 1.37.34; 1.37.40; 1.37.42;
share more code.

branches: 1.36.4;
make this compile again.

PR/42568: Pedro F. Giffuni: Better signal handling from OpenBSD, but simplified.

Remove closes 3 & 4 from my licence. Lots of thanks to Soren Jacobsen
for the booring work !

Ignore the "-P" option as intended to make this work with e.g.
"fsck_flags=-pP" in "/etc/rc.conf".

Patch supplied by Pierre Pronchery in PR bin/41490.

branches: 1.32.2; 1.32.6; 1.32.8;
Don't use unicode in usage.
Noted by Anon Ymous.

Sync usage with man page.

Disable userid to username lookups by default. Add a -U flag to perform them.
In single user mode lookups that involve the network might not work and they
slow down fsck.

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

branches: 1.28.4;
errexit() now provides the trailing \n (since fsck_ffs assumed that
from a conversion from err(3)), so "make it so".

Make sure that the exit values are always sane, and use symbolic instead
of magic constants. Reviewed by go@

branches: 1.26.4; 1.26.10; 1.26.12;
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).

include <signal.h> where signal(3) is used

branches: 1.23.4;
Apply the NFS exports list rototill patch:

- Remove all NFS related stuff from file system specific code.
- Drop the vfs_checkexp hook and generalize it in the new nfs_check_export
function, thus removing redundancy from all file systems.
- Move all NFS export-related stuff from kern/vfs_subr.c to the new
file sys/nfs/nfs_export.c. The former was becoming large and its code
is always compiled, regardless of the build options. Using the latter,
the code is only compiled in when NFSSERVER is enabled. While doing this,
also make some functions in nfs_subs.c conditional to NFSSERVER.
- Add a new command in nfssvc(2), called NFSSVC_SETEXPORTSLIST, that takes a
path and a set of export entries. At the moment it can only clear the
exports list or append entries, one by one, but it is done in a way that
allows setting the whole set of entries atomically in the future (see the
comment in mountd_set_exports_list or in doc/TODO).
- Change mountd(8) to use the nfssvc(2) system call instead of mount(2) so
that it becomes file system agnostic. In fact, all this whole thing was
done to remove a 'XXX' block from this utility!
- Change the mount*, newfs and fsck* userland utilities to not deal with NFS
exports initialization; done internally by the kernel when initializing
the NFS support for each file system.
- Implement an interface for VFS (called VFS hooks) so that several kernel
subsystems can run arbitrary code upon receipt of specific VFS events.
At the moment, this only provides support for unmount and is used to
destroy NFS exports lists from the file systems being unmounted, though it
has room for extension.

Thanks go to yamt@, chs@, thorpej@, wrstuden@ and others for their comments
and advice in the development of this patch.

64 bit inode changes

constify.

Kill __P(), ANSIfy, remove main() prototype; WARNS=2

Add a progress meter to fsck_ffs based on the work by thorpej presented
to the mailing lists last January. This is optional.

Remove option letter from getopt string, since it does not
have a case handler below. From aaron@openbsd.

Replace the statfs() family of system calls with statvfs().
Retain binary compatibility.

Fix disclaimer in my copyright. Pointed out by Thomas Klausner.

Homogenize usage messages: make the 'usage' word all lowercase, as this seems
to be the most common practice in our tree.

Add a -q (quiet) option to print nothing for clean filesystems.
Support in fsck_ffs and stub in fsck_xxx.
Push a few more messages through pwarn() instead of printf() to ensure
disk name is shown.

Remove references to University of California from my copyright notices.

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

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

Bump daddr_t to 64 bits. Replace it with int32_t in all places where
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.

convert to use getprogname()

fix nested extern and duplicate declarations

Correct bogons in filetype option support, and add support for the
sparse_super option.

First cut at ext2fs rev 1 support (as of mke2fs 1.18): supports the filetype
option read/write and the sparse option read-only.

const poisoning.

Need <time.h> for time() prototype.

Merge with Lite2 + local changes

Don't declare optind and optarg.

* cleanup for WARNS=1
* deprecate register
* cleanup manpage
* remove unused docheck()
* getopt returns -1 not EOF
* put a ) in the correct place in a printf, so that the argument gets
& 0xff, not the result of printf() itself...

Add support programs for ext2fs. fsck_ext2fs is derived from fsck_ffs.

fsck: Stop defining the same variable concurrently in bss and data

returntosingle was defined in multiple places:

- fsck_lfs/main.c
- fsck_ffs/main.c
- fsck_ext2fs/main.c
- fsck/fsutil.c

Keep the fsutil.c definition as the only one.

Detected during the build of telned with Address Sanitizer (MKSANITIZER).

- add or adjust /* FALLTHROUGH */ where appropriate
- add __unreachable() after functions that can return but won't in
this case, and thus can't be marked __dead easily

Remove references to -c flag which was never included.

branches: 1.37.34; 1.37.40; 1.37.42;
share more code.

branches: 1.36.4;
make this compile again.

PR/42568: Pedro F. Giffuni: Better signal handling from OpenBSD, but simplified.

Remove closes 3 & 4 from my licence. Lots of thanks to Soren Jacobsen
for the booring work !

Ignore the "-P" option as intended to make this work with e.g.
"fsck_flags=-pP" in "/etc/rc.conf".

Patch supplied by Pierre Pronchery in PR bin/41490.

branches: 1.32.2; 1.32.6; 1.32.8;
Don't use unicode in usage.
Noted by Anon Ymous.

Sync usage with man page.

Disable userid to username lookups by default. Add a -U flag to perform them.
In single user mode lookups that involve the network might not work and they
slow down fsck.

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

branches: 1.28.4;
errexit() now provides the trailing \n (since fsck_ffs assumed that
from a conversion from err(3)), so "make it so".

Make sure that the exit values are always sane, and use symbolic instead
of magic constants. Reviewed by go@

branches: 1.26.4; 1.26.10; 1.26.12;
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).

include <signal.h> where signal(3) is used

branches: 1.23.4;
Apply the NFS exports list rototill patch:

- Remove all NFS related stuff from file system specific code.
- Drop the vfs_checkexp hook and generalize it in the new nfs_check_export
function, thus removing redundancy from all file systems.
- Move all NFS export-related stuff from kern/vfs_subr.c to the new
file sys/nfs/nfs_export.c. The former was becoming large and its code
is always compiled, regardless of the build options. Using the latter,
the code is only compiled in when NFSSERVER is enabled. While doing this,
also make some functions in nfs_subs.c conditional to NFSSERVER.
- Add a new command in nfssvc(2), called NFSSVC_SETEXPORTSLIST, that takes a
path and a set of export entries. At the moment it can only clear the
exports list or append entries, one by one, but it is done in a way that
allows setting the whole set of entries atomically in the future (see the
comment in mountd_set_exports_list or in doc/TODO).
- Change mountd(8) to use the nfssvc(2) system call instead of mount(2) so
that it becomes file system agnostic. In fact, all this whole thing was
done to remove a 'XXX' block from this utility!
- Change the mount*, newfs and fsck* userland utilities to not deal with NFS
exports initialization; done internally by the kernel when initializing
the NFS support for each file system.
- Implement an interface for VFS (called VFS hooks) so that several kernel
subsystems can run arbitrary code upon receipt of specific VFS events.
At the moment, this only provides support for unmount and is used to
destroy NFS exports lists from the file systems being unmounted, though it
has room for extension.

Thanks go to yamt@, chs@, thorpej@, wrstuden@ and others for their comments
and advice in the development of this patch.

64 bit inode changes

constify.

Kill __P(), ANSIfy, remove main() prototype; WARNS=2

Add a progress meter to fsck_ffs based on the work by thorpej presented
to the mailing lists last January. This is optional.

Remove option letter from getopt string, since it does not
have a case handler below. From aaron@openbsd.

Replace the statfs() family of system calls with statvfs().
Retain binary compatibility.

Fix disclaimer in my copyright. Pointed out by Thomas Klausner.

Homogenize usage messages: make the 'usage' word all lowercase, as this seems
to be the most common practice in our tree.

Add a -q (quiet) option to print nothing for clean filesystems.
Support in fsck_ffs and stub in fsck_xxx.
Push a few more messages through pwarn() instead of printf() to ensure
disk name is shown.

Remove references to University of California from my copyright notices.

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

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

Bump daddr_t to 64 bits. Replace it with int32_t in all places where
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.

convert to use getprogname()

fix nested extern and duplicate declarations

Correct bogons in filetype option support, and add support for the
sparse_super option.

First cut at ext2fs rev 1 support (as of mke2fs 1.18): supports the filetype
option read/write and the sparse option read-only.

const poisoning.

Need <time.h> for time() prototype.

Merge with Lite2 + local changes

Don't declare optind and optarg.

* cleanup for WARNS=1
* deprecate register
* cleanup manpage
* remove unused docheck()
* getopt returns -1 not EOF
* put a ) in the correct place in a printf, so that the argument gets
& 0xff, not the result of printf() itself...

Add support programs for ext2fs. fsck_ext2fs is derived from fsck_ffs.

- add or adjust /* FALLTHROUGH */ where appropriate
- add __unreachable() after functions that can return but won't in
this case, and thus can't be marked __dead easily

Remove references to -c flag which was never included.

branches: 1.37.34; 1.37.40;
share more code.

branches: 1.36.4;
make this compile again.

PR/42568: Pedro F. Giffuni: Better signal handling from OpenBSD, but simplified.

Remove closes 3 & 4 from my licence. Lots of thanks to Soren Jacobsen
for the booring work !

Ignore the "-P" option as intended to make this work with e.g.
"fsck_flags=-pP" in "/etc/rc.conf".

Patch supplied by Pierre Pronchery in PR bin/41490.

branches: 1.32.2; 1.32.6; 1.32.8;
Don't use unicode in usage.
Noted by Anon Ymous.

Sync usage with man page.

Disable userid to username lookups by default. Add a -U flag to perform them.
In single user mode lookups that involve the network might not work and they
slow down fsck.

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

branches: 1.28.4;
errexit() now provides the trailing \n (since fsck_ffs assumed that
from a conversion from err(3)), so "make it so".

Make sure that the exit values are always sane, and use symbolic instead
of magic constants. Reviewed by go@

branches: 1.26.4; 1.26.10; 1.26.12;
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).

include <signal.h> where signal(3) is used

branches: 1.23.4;
Apply the NFS exports list rototill patch:

- Remove all NFS related stuff from file system specific code.
- Drop the vfs_checkexp hook and generalize it in the new nfs_check_export
function, thus removing redundancy from all file systems.
- Move all NFS export-related stuff from kern/vfs_subr.c to the new
file sys/nfs/nfs_export.c. The former was becoming large and its code
is always compiled, regardless of the build options. Using the latter,
the code is only compiled in when NFSSERVER is enabled. While doing this,
also make some functions in nfs_subs.c conditional to NFSSERVER.
- Add a new command in nfssvc(2), called NFSSVC_SETEXPORTSLIST, that takes a
path and a set of export entries. At the moment it can only clear the
exports list or append entries, one by one, but it is done in a way that
allows setting the whole set of entries atomically in the future (see the
comment in mountd_set_exports_list or in doc/TODO).
- Change mountd(8) to use the nfssvc(2) system call instead of mount(2) so
that it becomes file system agnostic. In fact, all this whole thing was
done to remove a 'XXX' block from this utility!
- Change the mount*, newfs and fsck* userland utilities to not deal with NFS
exports initialization; done internally by the kernel when initializing
the NFS support for each file system.
- Implement an interface for VFS (called VFS hooks) so that several kernel
subsystems can run arbitrary code upon receipt of specific VFS events.
At the moment, this only provides support for unmount and is used to
destroy NFS exports lists from the file systems being unmounted, though it
has room for extension.

Thanks go to yamt@, chs@, thorpej@, wrstuden@ and others for their comments
and advice in the development of this patch.

64 bit inode changes

constify.

Kill __P(), ANSIfy, remove main() prototype; WARNS=2

Add a progress meter to fsck_ffs based on the work by thorpej presented
to the mailing lists last January. This is optional.

Remove option letter from getopt string, since it does not
have a case handler below. From aaron@openbsd.

Replace the statfs() family of system calls with statvfs().
Retain binary compatibility.

Fix disclaimer in my copyright. Pointed out by Thomas Klausner.

Homogenize usage messages: make the 'usage' word all lowercase, as this seems
to be the most common practice in our tree.

Add a -q (quiet) option to print nothing for clean filesystems.
Support in fsck_ffs and stub in fsck_xxx.
Push a few more messages through pwarn() instead of printf() to ensure
disk name is shown.

Remove references to University of California from my copyright notices.

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

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

Bump daddr_t to 64 bits. Replace it with int32_t in all places where
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.

convert to use getprogname()

fix nested extern and duplicate declarations

Correct bogons in filetype option support, and add support for the
sparse_super option.

First cut at ext2fs rev 1 support (as of mke2fs 1.18): supports the filetype
option read/write and the sparse option read-only.

const poisoning.

Need <time.h> for time() prototype.

Merge with Lite2 + local changes

Don't declare optind and optarg.

* cleanup for WARNS=1
* deprecate register
* cleanup manpage
* remove unused docheck()
* getopt returns -1 not EOF
* put a ) in the correct place in a printf, so that the argument gets
& 0xff, not the result of printf() itself...

Add support programs for ext2fs. fsck_ext2fs is derived from fsck_ffs.