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linux-user: add strace support for openat2

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This commit adds support for the `openat2()` to `QEMU_STRACE`. It
will use the `openat2.h` header if available to create user
readable flags for the `resolve` argument but does not require
the header otherwise.

It also makes `copy_struct_from_user()` available via `qemu.h`
and `open_how_ver0` via `syscall_defs.h` so that strace.c can use
them.

Signed-off-by: Michael Vogt <mvogt@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <f02d40c7751c03af885ced6dd94e4734d4be4d8f.1727795334.git.mvogt@redhat.com>
[rth: Add braces around the expanded how structure, like strace(3)]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Michael Vogt 2024-10-01 17:14:54 +02:00 • committed by Richard Henderson
parent 9651cead2f
commit 9729930344
6 changed files with 66 additions and 7 deletions
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3
linux-user/strace.list
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@ -715,6 +715,9 @@
#ifdef TARGET_NR_openat
{ TARGET_NR_openat, "openat" , NULL, print_openat, NULL },
#endif
#ifdef TARGET_NR_openat2
{ TARGET_NR_openat2, "openat2" , NULL, print_openat2, NULL },
#endif
#ifdef TARGET_NR_osf_adjtime
{ TARGET_NR_osf_adjtime, "osf_adjtime" , NULL, NULL, NULL },
#endif