Commit Graph

63 Commits

Author SHA1 Message Date
Stacey Son
6765e988e1 bsd-user: Introduce bsd-mem.h to the source tree
Preserve the copyright notice and help with the 'Author' info for
subsequent changes to the file.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230925182709.4834-12-kariem.taha2.7@gmail.com>
2023-10-03 17:14:07 -06:00
Stacey Son
c9cdf0a5ec bsd-user: Implement target_set_brk function in bsd-mem.c instead of os-syscall.c
The definitions and variables names matches the corresponding ones in
linux-user/syscall.c, for making later implementation of do_obreak easier

Co-authored-by: Mikaël Urankar <mikael.urankar@gmail.com>
Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230925182709.4834-9-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Kyle Evans
182ea728e0 bsd-user: Implement shm_rename(2) system call
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182709.4834-7-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Karim Taha
0c3529888a bsd-user: Implement shm_open2(2) system call
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230925182709.4834-6-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
6756ae283a bsd-user: Implement pdfork(2) system call.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-29-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
510eecbc86 bsd-user: Implement rfork(2) system call.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-28-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
831a5a7fcb bsd-user: Implement fork(2) and vfork(2) system calls.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-27-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
0571e3f5e2 bsd-user: Implement pdgetpid(2) and the undocumented setugid.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-26-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
159e5b0c4b bsd-user: Implement setloginclass(2) and getloginclass(2) system calls.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-25-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
ae502887cb bsd-user: Implement wait4(2) and wait6(2) system calls.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-24-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Karim Taha
36999e6a6b bsd-user: Implement execve(2) and fexecve(2) system calls.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-23-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
dcaa3dfda3 bsd-user: Implement procctl(2) along with necessary conversion functions.
Implement t2h_procctl_cmd, h2t_reaper_status, h2t_reaper_pidinfo and h2t/t2h reaper_kill conversion functions.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-22-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
ff26637260 bsd-user: Implement getpriority(2) and setpriority(2).
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-19-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
615ad41c61 bsd-user: Add stubs for profil(2), ktrace(2), utrace(2) and ptrace(2).
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-18-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
932683c3d4 bsd-user: Implement get/set[resuid/resgid/sid] and issetugid.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-17-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
e4446e0a2c bsd-user: Implement several get/set system calls:
getpid(2), getppid(2), getpgrp(2)
setreuid(2), setregid(2)
getuid(2), geteuid(2), getgid(2), getegid(2), getpgid(2)
setuid(2), seteuid(2), setgid(2), setegid(2), setpgid(2)

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-16-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
faba8e123f bsd-user: Implement getrlimit(2) and setrlimit(2)
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-15-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
59e801efdf bsd-user: Implement getrusage(2).
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-14-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
82fe5f3a34 bsd-user: Implement umask(2), setlogin(2) and getlogin(2)
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-13-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Stacey Son
a478416dc8 bsd-user: Implement getgroups(2) and setgroups(2) system calls.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-12-kariem.taha2.7@gmail.com>
2023-10-03 17:14:06 -06:00
Warner Losh
f51e7c41ac bsd-user: Add missing break after do_bsd_preadv
Without it, we'd call preadv, then write with weird parameters, which is
clearly not ideal...

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Fixes: 770d8abae7 ("bsd-user/bsd-file.h: Meat of the write system calls")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230820045419.89691-1-imp@bsdimp.com>
2023-08-28 12:16:18 -06:00
Warner Losh
97a3c57114 bsd-user: Add getdents and fcntl related system calls
Add glue to call the following syscalls to the freebsd_syscall:

freebsd11_getdents
getdirentries
freebsd11_getdirentries
fcntl

Signed-off-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
2023-08-28 12:16:18 -06:00
Warner Losh
d7e9a54508 bsd-user: Add glue for statfs related system calls
Add glue to call the following syscalls to the freebsd_syscall:

freebsd11_statfs
statfs
freebsd11_fstatfs
fstatfs
freebsd11_getfsstat
getfsstat

Signed-off-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-28 12:16:18 -06:00
Warner Losh
6fe97c6cf7 bsd-user: Add glue for getfh and related syscalls
Add glue to call the following syscalls to the freebsd_syscall:

getfh
lgetfh
fhopen
freebsd11_fhstat
freebsd11_fhstatfs
fhstat
fhstatfs

Signed-off-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-28 12:16:18 -06:00
Warner Losh
e800e6c541 bsd-user: Add glue for the freebsd11_stat syscalls
Add glue to call the freebsd11_stat syscalls to the freebsd_syscall:

freebsd11_stat
freebsd11_lstat
freebsd11_fstat
freebsd11_fstatat
freebsd11_nstat, freebsd11_nfstat, freebsd11_nlstat
fstatat
fstat

Signed-off-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
2023-08-28 12:16:18 -06:00
Warner Losh
25e2cfbb8e bsd-user: Move _WANT_FREEBSD macros to include/qemu/osdep.h
move _WANT_FREEBSD macros from bsd-user/freebsd/os-syscall.c to
include/qemu/osdep.h in order to pull some struct defintions needed
later in the build.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-28 12:16:18 -06:00
Alex Bennée
2e2097b495 *-user: remove the guest_user_syscall tracepoints
This is pure duplication now. Both bsd-user and linux-user have
builtin strace support and we can also track syscalls via the plugins
system.

Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20230526165401.574474-2-alex.bennee@linaro.org
Message-Id: <20230524133952.3971948-2-alex.bennee@linaro.org>
[Remove unused variable in do_freebsd_syscall() reported by Richard
Henderson.
--Stefan]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-06-01 11:03:55 -04:00
Alex Bennée
c566080cd3 gdbstub: move syscall handling to new file
Our GDB syscall support is the last chunk of code that needs target
specific support so move it to a new file. We take the opportunity to
move the syscall state into its own singleton instance and add in a
few helpers for the main gdbstub to interact with the module.

I also moved the gdb_exit() declaration into syscalls.h as it feels
pretty related and most of the callers of it treat it as such.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

Message-Id: <20230302190846.2593720-22-alex.bennee@linaro.org>
Message-Id: <20230303025805.625589-22-richard.henderson@linaro.org>
2023-03-07 20:44:08 +00:00
Kyle Evans
6da777e212 bsd-user: implement sysctlbyname(2)
do_freebsd_sysctlbyname needs to translate the 'name' back down to a OID
so we can intercept the special ones. Do that and call the common wrapper
do_freebsd_sysctl_oid.

Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-01 11:09:19 -07:00
Kyle Evans
7adda6de6d bsd-user: do_freebsd_sysctl helper for sysctl(2)
Implement the wrapper function for sysctl(2). This puts the oid
arguments into a standard form and calls the common
do_freebsd_sysctl_oid.

Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Co-Authored-by: Juergen Lock <nox@jelal.kn-bremen.de>
Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de>
Co-Authored-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-01 11:09:19 -07:00
Stacey Son
fb96f5dfed bsd-user: Add sysarch syscall
Connect up the sysarch system call.

Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de>
Co-authored-by: Juergen Lock <nox@jelal.kn-bremen.de>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-01 11:09:18 -07:00
Doug Rabson
4cf41e8084 bsd-user: Don't truncate the return value from freebsd_syscall
System call return values on FreeBSD are in a register (which is spelled
abi_long in qemu). This was being assigned into an int variable which
causes problems for 64bit targets.

Resolves: https://github.com/qemu-bsd-user/qemu-bsd-user/issues/40
Signed-off-by: Doug Rabson <dfr@rabson.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
[ Edited commit message for upstreaming into qemu-project ]
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2023-03-01 11:09:18 -07:00
Warner Losh
952d5d30d6 bsd-user: Implement undelete
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:52:48 -06:00
Warner Losh
d3f29ddacd bsd-user: Implement pathconf, lpathconf and fpathconf
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:52:48 -06:00
Warner Losh
5fbd8011ff bsd-user: Implement mkfifo and mkfifoat
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:52:48 -06:00
Warner Losh
17a4d13cea bsd-user: Implement chroot and flock
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:52:48 -06:00
Warner Losh
c6f0a7d91a bsd-user: Implement chflags, lchflags and fchflags
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:52:48 -06:00
Warner Losh
58af3e295c bsd-user: Implement chown, fchown, lchown and fchownat
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:52:48 -06:00
Warner Losh
79cfae0c1b bsd-user: Implement freebsd11_mknod, freebsd11_mknodat and mknodat
These implement both the old-pre INO64 mknod variations, as well as the
now current INO64 variant. Make direct syscall calls for these older
syscalls to avloid too many dependencies.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Michal Meloun <mmel@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:52:48 -06:00
Warner Losh
0db0db8f23 bsd-user: implement chmod, fchmod, lchmod and fchmodat
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:52:48 -06:00
Warner Losh
c7b62b4a87 bsd-user: Implement symlink, symlinkat, readlink and readlinkat
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:52:42 -06:00
Warner Losh
af2ae2e8ac bsd-user: Implement mount, umount and nmount
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-02 07:51:03 -06:00
Warner Losh
d35020ed00 bsd-user: Implement acct and sync
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-14 08:17:44 -06:00
Warner Losh
4b795b147b bsd-user: Implement trunctate and ftruncate
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-14 08:17:44 -06:00
Warner Losh
a15699acaf bsd-user: Implement dup and dup2
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-14 08:17:44 -06:00
Warner Losh
6af8f76a9f bsd-user: Implement rmdir and undocumented __getcwd
Implemenet rmdir and __getcwd. __getcwd is the undocumented
back end to getcwd(3).

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-14 08:17:37 -06:00
Warner Losh
1ffbd5e7fe bsd-user: Implement mkdir and mkdirat
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-14 08:17:31 -06:00
Warner Losh
2d3b7e01d6 bsd-user: Implement link, linkat, unlink and unlinkat
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-13 15:51:29 -06:00
Warner Losh
ab5fd2d969 bsd-user: Implement rename and renameat
Plus the helper LOCK_PATH2 and UNLOCK_PATH2 macros.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-13 15:50:50 -06:00
Warner Losh
390f547ea8 bsd-user: Implement chdir and fchdir
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-06-13 15:50:22 -06:00