linuxolator: translate LINUX_RENAME_NOREPLACE into our AT_RENAME_NOREPLACE

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.or

linuxolator: translate LINUX_RENAME_NOREPLACE into our AT_RENAME_NOREPLACE

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D55539

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kern_renameat(9): add flags argument

Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D55539

kern/vfs_unmount.c: promote flags to uint64_t

to prevent sign-extension, causing unexpected flags to be passed to
dounmount(). The mnt_flags and MNT_* constants are 64bit wide.

Suggested and revie

kern/vfs_unmount.c: promote flags to uint64_t

to prevent sign-extension, causing unexpected flags to be passed to
dounmount(). The mnt_flags and MNT_* constants are 64bit wide.

Suggested and reviewed by: jah
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D55197

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linux_file.c: Fix handling of NFS getdents() emulation

Bugzilla PR#292282 reports a problem, where a Linux
binary running in the Linuxulator gets bogus entries
in a readdir()/getdents() reply when t

linux_file.c: Fix handling of NFS getdents() emulation

Bugzilla PR#292282 reports a problem, where a Linux
binary running in the Linuxulator gets bogus entries
in a readdir()/getdents() reply when the directory is
an NFS mount.

This appears to be caused by the NFS client including
entries with d_fileno == 0, which are always ignored by
BSD, but are not ignored by Linux.

This patch filters out the "d_fileno == 0" entries and
the reporter of the bugzilla PR notes that it fixes the
problem for him.

It could be argued that the NFS client should filter out
the "d_fileno == 0" entries, but the NFS client readdir
code is "fragile" and any change to it runs a significant
risk of causing regression type problems.

As such, since the LInuxulator is already broken for this
case, it seems safer to filter them out there.

PR: 292282
Tested by: Jerry Williams <jwillia3@proton.me>
Reviewed by: markj
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D54679

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linux: Implement F_DUPFD_QUERY fcntl with kcmp(2) KCMP_FILE

Signed-off-by: Ricardo Branco <rbranco@suse.de>
Reviewed by: kib
Pull Request: https://github.com/freebsd/freebsd-src/pull/1920

kern: allow kern_shm_open2 of an anonymous preconstructed shmfd

The motivation here is for future changes to the coredump code to be
able to build up a coredump into a shmfd instead of a vnode, whic

kern: allow kern_shm_open2 of an anonymous preconstructed shmfd

The motivation here is for future changes to the coredump code to be
able to build up a coredump into a shmfd instead of a vnode, which then
gets tapped out to userland via a character device. This also opens up
the possibility that it's useful for the kernel to be able to construct
a shmfd and pass it out to a process that shouldn't need to write to it.

Reviewed by: emaste, kib, markj
Differential Revision: https://reviews.freebsd.org/D51336

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linux: Add inotify support

Implement the Linux inotify system calls using the native implementation
in vfs_inotify.c.

PR: 240874
Reviewed by: brooks
MFC after: 3 months
Sponsored by: Klara, Inc.
D

linux: Add inotify support

Implement the Linux inotify system calls using the native implementation
in vfs_inotify.c.

PR: 240874
Reviewed by: brooks
MFC after: 3 months
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D50761

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faccessat(2): Honor AT_SYMLINK_NOFOLLOW

Make the system call honor `AT_SYMLINK_NOFOLLOW`.

Also enable this from `linux_faccessat2` where the issue arised the first time.
Update manual pages accordi

faccessat(2): Honor AT_SYMLINK_NOFOLLOW

Make the system call honor `AT_SYMLINK_NOFOLLOW`.

Also enable this from `linux_faccessat2` where the issue arised the first time.
Update manual pages accordingly.

PR: 275295
Reported by: kenrap@kennethraplee.com
Approved by: kib@
Differential Revision: https://reviews.freebsd.org/D46267

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linux: Export linux_common_openflags()

Reviewed by: imp, kib
Pull Request: https://github.com/freebsd/freebsd-src/pull/1248

Abstract UIO allocation and deallocation.

Introduce the allocuio() and freeuio() functions to allocate and
deallocate struct uio. This hides the actual allocator interface, so it
is easier to modify

Abstract UIO allocation and deallocation.

Introduce the allocuio() and freeuio() functions to allocate and
deallocate struct uio. This hides the actual allocator interface, so it
is easier to modify the sub-allocation layout of struct uio and the
corresponding iovec array.

Obtained from: CheriBSD
Reviewed by: kib, markj
MFC after: 2 weeks
Sponsored by: CHaOS, EPSRC grant EP/V000292/1
Differential Revision: https://reviews.freebsd.org/D43711

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linux(4): Replace linux32_copyinuio by freebsd32_copyinuio

MFC after: 1 month

linux(4): Return EAGAIN instead of ENOBUFS for non-blocking sockets in pwrite

MFC after: 1 month

linux(4): Return EAGAIN instead of ENOBUFS for non-blocking sockets in pwritev

MFC after: 1 month

linux(4): Add a dedicated writev syscall wrapper

Adding a writev syscall wrapper is needed due to Linux family of write
syscalls doesn't distinguish between in kernel blocking operations
and always

linux(4): Add a dedicated writev syscall wrapper

Adding a writev syscall wrapper is needed due to Linux family of write
syscalls doesn't distinguish between in kernel blocking operations
and always returns EAGAIN while FreeBSD can return ENOBUFS.

MFC after: 1 month

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linux(4): Add a write syscall wrapper

Adding a write syscall wrapper is needed due to Linux family of write
syscalls doesn't distinguish between in kernel blocking operations
and always returns EAGA

linux(4): Add a write syscall wrapper

Adding a write syscall wrapper is needed due to Linux family of write
syscalls doesn't distinguish between in kernel blocking operations
and always returns EAGAIN while FreeBSD can return ENOBUFS.

MFC after: 1 month

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linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743

sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

linux(4): Use M_LINUX for malloc type in getdents

MFC after: 2 weeks

linux(4): Use M_LINUX for malloc type in getdents64

MFC after: 2 weeks

linux(4): Delete a useless variable in getdents64

MFC after: 2 weeks

linux(4): Use M_LINUX for malloc type in readdir

MFC after: 2 weeks

linux(4): Delete a useless variable in readdir

MFC after: 2 weeks

linux(4): Properly allocate buffer for kern_getdirentries in readdir

Looks like prior to ino64 project the size of the struct linux_dirent
was greater (or equal) to the size of the native struct dir

linux(4): Properly allocate buffer for kern_getdirentries in readdir

Looks like prior to ino64 project the size of the struct linux_dirent
was greater (or equal) to the size of the native struct dirent so the
native dirent fit into the buffer. After ino64 project the size of the
native struct dirent has increased.

Spotted by gcc12.
MFC after: 2 weeks

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linux(4): Use pwd_altroot() to tell namei() about ABI root path

PR: 72920
Differential Revision: https://reviews.freebsd.org/D40090
MFC after: 2 month

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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