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linux-user: strace now handles unshare syscall args correctly

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Syscall unshare did not have custom print function for strace, but it's argument is same as flags in clone syscall, so it can be easily implemented.
Also updated missing flags from clone_flags.

Signed-off-by: Matus Kysel <mkysel@tachyum.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210406144203.1020598-1-mkysel@tachyum.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Matus Kysel 2021-04-06 14:42:03 +00:00 committed by Laurent Vivier
parent 48c8c5e886
commit 5847d3098d
2 changed files with 19 additions and 1 deletions
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18
linux-user/strace.c
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@ -1109,6 +1109,12 @@ UNUSED static struct flags clone_flags[] = {
#if defined(CLONE_NEWNET)
FLAG_GENERIC(CLONE_NEWNET),
#endif
#if defined(CLONE_NEWCGROUP)
FLAG_GENERIC(CLONE_NEWCGROUP),
#endif
#if defined(CLONE_NEWTIME)
FLAG_GENERIC(CLONE_NEWTIME),
#endif
#if defined(CLONE_IO)
FLAG_GENERIC(CLONE_IO),
#endif
@ -3467,6 +3473,18 @@ print_unlinkat(void *cpu_env, const struct syscallname *name,
}
#endif
#ifdef TARGET_NR_unshare
static void
print_unshare(void *cpu_env, const struct syscallname *name,
abi_long arg0, abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4, abi_long arg5)
{
print_syscall_prologue(name);
print_flags(clone_flags, arg0, 1);
print_syscall_epilogue(name);
}
#endif
#ifdef TARGET_NR_utime
static void
print_utime(void *cpu_env, const struct syscallname *name,

2
linux-user/strace.list
View File

@ -1573,7 +1573,7 @@
{ TARGET_NR_unlinkat, "unlinkat" , NULL, print_unlinkat, NULL },
#endif
#ifdef TARGET_NR_unshare
{ TARGET_NR_unshare, "unshare" , NULL, NULL, NULL },
{ TARGET_NR_unshare, "unshare" , NULL, print_unshare, NULL },
#endif
#ifdef TARGET_NR_userfaultfd
{ TARGET_NR_userfaultfd, "userfaultfd" , NULL, NULL, NULL },