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linux-user: Add open_tree() syscall

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Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20230424153429.276788-2-thomas@t-8ch.de>
[lv: move declaration at the beginning of the block,
     define syscall]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Thomas Weißschuh 2023-04-24 17:34:29 +02:00 committed by Laurent Vivier
parent 4b2d2753e8
commit 7f696cddd9
1 changed files with 33 additions and 0 deletions
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33
linux-user/syscall.c
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@ -8776,6 +8776,12 @@ static int do_getdents64(abi_long dirfd, abi_long arg2, abi_long count)
_syscall2(int, pivot_root, const char *, new_root, const char *, put_old)
#endif
#if defined(TARGET_NR_open_tree) && defined(__NR_open_tree)
#define __NR_sys_open_tree __NR_open_tree
_syscall3(int, sys_open_tree, int, __dfd, const char *, __filename,
unsigned int, __flags)
#endif
#if defined(TARGET_NR_move_mount) && defined(__NR_move_mount)
#define __NR_sys_move_mount __NR_move_mount
_syscall5(int, sys_move_mount, int, __from_dfd, const char *, __from_pathname,
@ -9202,6 +9208,33 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
return ret;
}
#endif
#if defined(TARGET_NR_open_tree) && defined(__NR_open_tree)
case TARGET_NR_open_tree:
{
void *p2;
int host_flags;
if (!arg2) {
return -TARGET_EFAULT;
}
p2 = lock_user_string(arg2);
if (!p2) {
return -TARGET_EFAULT;
}
host_flags = arg3 & ~TARGET_O_CLOEXEC;
if (arg3 & TARGET_O_CLOEXEC) {
host_flags |= O_CLOEXEC;
}
ret = get_errno(sys_open_tree(arg1, p2, host_flags));
unlock_user(p2, arg2, 0);
return ret;
}
#endif
#ifdef TARGET_NR_stime /* not on alpha */
case TARGET_NR_stime:
{