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bsd-user: Implement freebsd11_mknod, freebsd11_mknodat and mknodat

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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>
This commit is contained in:
Warner Losh 2022-06-14 14:56:30 -06:00
parent 0db0db8f23
commit 79cfae0c1b
2 changed files with 60 additions and 0 deletions
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47
bsd-user/bsd-file.h
View file

@ -721,4 +721,51 @@ static abi_long do_bsd_fchmodat(abi_long arg1, abi_long arg2,
return ret;
}
/* pre-ino64 mknod(2) */
static abi_long do_bsd_freebsd11_mknod(abi_long arg1, abi_long arg2, abi_long arg3)
{
abi_long ret;
void *p;
LOCK_PATH(p, arg1);
ret = get_errno(syscall(SYS_freebsd11_mknod, p, arg2, arg3));
UNLOCK_PATH(p, arg1);
return ret;
}
/* pre-ino64 mknodat(2) */
static abi_long do_bsd_freebsd11_mknodat(abi_long arg1, abi_long arg2,
abi_long arg3, abi_long arg4)
{
abi_long ret;
void *p;
LOCK_PATH(p, arg2);
ret = get_errno(syscall(SYS_freebsd11_mknodat, arg1, p, arg3, arg4));
UNLOCK_PATH(p, arg2);
return ret;
}
/* post-ino64 mknodat(2) */
static abi_long do_bsd_mknodat(void *cpu_env, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5,
abi_long arg6)
{
abi_long ret;
void *p;
LOCK_PATH(p, arg2);
/* 32-bit arch's use two 32 registers for 64 bit return value */
if (regpairs_aligned(cpu_env) != 0) {
ret = get_errno(mknodat(arg1, p, arg3, target_arg64(arg5, arg6)));
} else {
ret = get_errno(mknodat(arg1, p, arg3, target_arg64(arg4, arg5)));
}
UNLOCK_PATH(p, arg2);
return ret;
}
#endif /* BSD_FILE_H */

13
bsd-user/freebsd/os-syscall.c
View file

@ -32,6 +32,7 @@
#include "qemu/cutils.h"
#include "qemu/path.h"
#include <sys/syscall.h>
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/sysctl.h>
@ -418,6 +419,18 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
ret = do_bsd_fchmodat(arg1, arg2, arg3, arg4);
break;
case TARGET_FREEBSD_NR_freebsd11_mknod: /* mknod(2) */
ret = do_bsd_freebsd11_mknod(arg1, arg2, arg3);
break;
case TARGET_FREEBSD_NR_freebsd11_mknodat: /* mknodat(2) */
ret = do_bsd_freebsd11_mknodat(arg1, arg2, arg3, arg4);
break;
case TARGET_FREEBSD_NR_mknodat: /* mknodat(2) */
ret = do_bsd_mknodat(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6);
break;
default:
qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
ret = -TARGET_ENOSYS;