jail: add jexec -d, to specify a working directory
PR: 283170
Submitted by: DtxdF at disroot.org

jail: only chdir to user's home directory when user is specified

jail(8) with the "exec.clean" parameter not only cleans the enviromnent
variables before running commands, but also changes to the us

jail: only chdir to user's home directory when user is specified

jail(8) with the "exec.clean" parameter not only cleans the enviromnent
variables before running commands, but also changes to the user's home
directory. While this makes sense when auser is specified (via one of
the exec.*_user parameters), it leads to all commands being run in the
jail's /root directory even in the absence of an explicitly specified
user. This can lead to problems when e.g. rc scripts are run from that
non-world-readable directory, and run counter to expectations that jail
startup is analogous to system startup.

Restrict this behvaiour to only users exlicitly specified, either via
the command line or jail parameters, but not the implicit root user.
While this changes long-stand practice, it's the more intuitive action.

jexec(8) has the same problem, and the same fix.

PR: 277210
Reported by: johannes.kunde at gmail
Differential Revision: https://reviews.freebsd.org/D46226

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jexec.8: Add examples section

MFC after: 3 days
Reviewed by: gbe, 0mp, danfe, pauamma_gundo.com
Differential Revision: https://reviews.freebsd.org/D40831

Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

jexec man: Explain how PATH is adjusted.

Add a sentence that explains that PATH is set to `/bin:/usr/bin`.
I had to dive into `jexec.c` to find this out.

Reviewed by: markj
Differential Revision: h

jexec man: Explain how PATH is adjusted.

Add a sentence that explains that PATH is set to `/bin:/usr/bin`.
I had to dive into `jexec.c` to find this out.

Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D35251

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Define which of the username options (-u/-U) to jexec(8) is the default.
Bump Dd.

PR: 207587
Submitted by: dewayne@heuristicsystems.com.au
MFC after: 3 days
Sponsored by: Essen Hackathon 2016

Merge from head

Catch up with head, primarily for the 1.14.4.0 firmware.

Merge ^/head r285341 through r285792.

Run a shell in the jail when no command is specified.
Add a new flag, -l, for a clean environment, same as jail(8) exec.clean.
Change the GET_USER_INFO macro into a function.

PR: 201300
Submitted b

Run a shell in the jail when no command is specified.
Add a new flag, -l, for a clean environment, same as jail(8) exec.clean.
Change the GET_USER_INFO macro into a function.

PR: 201300
Submitted by: Willem Jan Withagen
MFC after: 3 days

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Merge from head

- Merge from HEAD

Add support for the arbitrary named jail parameters used by jail_set(2)
and jail_get(2). Jail(8) can now create jails using a "name=value"
format instead of just specifying a limited set of fixed pa

Add support for the arbitrary named jail parameters used by jail_set(2)
and jail_get(2). Jail(8) can now create jails using a "name=value"
format instead of just specifying a limited set of fixed parameters; it
can also modify parameters of existing jails. Jls(8) can display all
parameters of jails, or a specified set of parameters. The available
parameters are gathered from the kernel, and not hard-coded into these
programs.

Small patches on killall(1) and jexec(8) to support jail names with
jail_get(2).

Approved by: bz (mentor)

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integrate from head@185615

MFp4:
Bring in updated jail support from bz_jail branch.

This enhances the current jail implementation to permit multiple
addresses per jail. In addtion to IPv4, IPv6 is supported as well.
Due to

MFp4:
Bring in updated jail support from bz_jail branch.

This enhances the current jail implementation to permit multiple
addresses per jail. In addtion to IPv4, IPv6 is supported as well.
Due to updated checks it is even possible to have jails without
an IP address at all, which basically gives one a chroot with
restricted process view, no networking,..

SCTP support was updated and supports IPv6 in jails as well.

Cpuset support permits jails to be bound to specific processor
sets after creation.

Jails can have an unrestricted (no duplicate protection, etc.) name
in addition to the hostname. The jail name cannot be changed from
within a jail and is considered to be used for management purposes
or as audit-token in the future.

DDB 'show jails' command was added to aid debugging.

Proper compat support permits 32bit jail binaries to be used on 64bit
systems to manage jails. Also backward compatibility was preserved where
possible: for jail v1 syscalls, as well as with user space management
utilities.

Both jail as well as prison version were updated for the new features.
A gap was intentionally left as the intermediate versions had been
used by various patches floating around the last years.

Bump __FreeBSD_version for the afore mentioned and in kernel changes.

Special thanks to:
- Pawel Jakub Dawidek (pjd) for his multi-IPv4 patches
and Olivier Houchard (cognet) for initial single-IPv6 patches.
- Jeff Roberson (jeff) and Randall Stewart (rrs) for their
help, ideas and review on cpuset and SCTP support.
- Robert Watson (rwatson) for lots and lots of help, discussions,
suggestions and review of most of the patch at various stages.
- John Baldwin (jhb) for his help.
- Simon L. Nielsen (simon) as early adopter testing changes
on cluster machines as well as all the testers and people
who provided feedback the last months on freebsd-jail and
other channels.
- My employer, CK Software GmbH, for the support so I could work on this.

Reviewed by: (see above)
MFC after: 3 months (this is just so that I get the mail)
X-MFC Before: 7.2-RELEASE if possible

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Fix some bugs/complaints:
- make addr2jid static
- add -h Flag for hostname/ip-number search
- s,strncmp,strcmp, in addr2jid
- return jid only if found once

Requested by: some

Add CAUTIONS section to the manpage and update .Dd.
Spelling fix.

PR: bin/119305 (reminded by Frank Behrens)
Suggested by: rwatson, maxim
MFC after: 2 weeks

Extend jexec to accept hostname or ip-number besides jail-id.

MFC after: 2 weeks

Markup fixes.

Add -u and -U which functions like the jail(8) that allow
commands to be executed under a different credential.

PR: bin/95777
Submitted by: clsung

excute: typo; possible replacements: excite, excuse.

o Add jls(8) for listing active jails.
o Add jexec(8) to execute a command in an existing jail.
o Add -j option for killall(1) to kill all processes in a specified
jail.
o Add -i option to jail(8)

o Add jls(8) for listing active jails.
o Add jexec(8) to execute a command in an existing jail.
o Add -j option for killall(1) to kill all processes in a specified
jail.
o Add -i option to jail(8) to output jail ID of newly created jail.

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- Merge from HEAD

Add support for the arbitrary named jail parameters used by jail_set(2)
and jail_get(2). Jail(8) can now create jails using a "name=value"
format instead of just specifying a limited set of fixed pa

Add support for the arbitrary named jail parameters used by jail_set(2)
and jail_get(2). Jail(8) can now create jails using a "name=value"
format instead of just specifying a limited set of fixed parameters; it
can also modify parameters of existing jails. Jls(8) can display all
parameters of jails, or a specified set of parameters. The available
parameters are gathered from the kernel, and not hard-coded into these
programs.

Small patches on killall(1) and jexec(8) to support jail names with
jail_get(2).

Approved by: bz (mentor)

show more ...

MFp4:
Bring in updated jail support from bz_jail branch.

This enhances the current jail implementation to permit multiple
addresses per jail. In addtion to IPv4, IPv6 is supported as well.
Due to

MFp4:
Bring in updated jail support from bz_jail branch.

This enhances the current jail implementation to permit multiple
addresses per jail. In addtion to IPv4, IPv6 is supported as well.
Due to updated checks it is even possible to have jails without
an IP address at all, which basically gives one a chroot with
restricted process view, no networking,..

SCTP support was updated and supports IPv6 in jails as well.

Cpuset support permits jails to be bound to specific processor
sets after creation.

Jails can have an unrestricted (no duplicate protection, etc.) name
in addition to the hostname. The jail name cannot be changed from
within a jail and is considered to be used for management purposes
or as audit-token in the future.

DDB 'show jails' command was added to aid debugging.

Proper compat support permits 32bit jail binaries to be used on 64bit
systems to manage jails. Also backward compatibility was preserved where
possible: for jail v1 syscalls, as well as with user space management
utilities.

Both jail as well as prison version were updated for the new features.
A gap was intentionally left as the intermediate versions had been
used by various patches floating around the last years.

Bump __FreeBSD_version for the afore mentioned and in kernel changes.

Special thanks to:
- Pawel Jakub Dawidek (pjd) for his multi-IPv4 patches
and Olivier Houchard (cognet) for initial single-IPv6 patches.
- Jeff Roberson (jeff) and Randall Stewart (rrs) for their
help, ideas and review on cpuset and SCTP support.
- Robert Watson (rwatson) for lots and lots of help, discussions,
suggestions and review of most of the patch at various stages.
- John Baldwin (jhb) for his help.
- Simon L. Nielsen (simon) as early adopter testing changes
on cluster machines as well as all the testers and people
who provided feedback the last months on freebsd-jail and
other channels.
- My employer, CK Software GmbH, for the support so I could work on this.

Reviewed by: (see above)
MFC after: 3 months (this is just so that I get the mail)
X-MFC Before: 7.2-RELEASE if possible

show more ...