1 /* $NetBSD: linux32_wait.c,v 1.13 2023/08/18 19:41:20 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Emmanuel Dreyfus
17 * 4. The name of the author may not be used to endorse or promote
18 * products derived from this software without specific prior written
19 * permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35
36 __KERNEL_RCSID(0, "$NetBSD: linux32_wait.c,v 1.13 2023/08/18 19:41:20 christos Exp $");
37
38 #include <sys/types.h>
39 #include <sys/param.h>
40 #include <sys/fstypes.h>
41 #include <sys/signal.h>
42 #include <sys/dirent.h>
43 #include <sys/kernel.h>
44 #include <sys/fcntl.h>
45 #include <sys/select.h>
46 #include <sys/proc.h>
47 #include <sys/ucred.h>
48 #include <sys/swap.h>
49 #include <sys/wait.h>
50
51 #include <machine/types.h>
52
53 #include <sys/syscallargs.h>
54
55 #include <compat/netbsd32/netbsd32.h>
56 #include <compat/netbsd32/netbsd32_conv.h>
57 #include <compat/netbsd32/netbsd32_syscallargs.h>
58
59 #include <compat/linux/common/linux_types.h>
60 #include <compat/linux/common/linux_signal.h>
61 #include <compat/linux/common/linux_machdep.h>
62 #include <compat/linux/common/linux_misc.h>
63 #include <compat/linux/common/linux_oldolduname.h>
64 #include <compat/linux/common/linux_ipc.h>
65 #include <compat/linux/common/linux_sem.h>
66 #include <compat/linux/linux_syscallargs.h>
67
68 #include <compat/linux32/common/linux32_types.h>
69 #include <compat/linux32/common/linux32_signal.h>
70 #include <compat/linux32/common/linux32_machdep.h>
71 #include <compat/linux32/common/linux32_sysctl.h>
72 #include <compat/linux32/common/linux32_socketcall.h>
73 #include <compat/linux32/linux32_syscallargs.h>
74
75 int
linux32_sys_waitpid(struct lwp * l,const struct linux32_sys_waitpid_args * uap,register_t * retval)76 linux32_sys_waitpid(struct lwp *l, const struct linux32_sys_waitpid_args *uap, register_t *retval)
77 {
78 /* {
79 syscallarg(int) pid;
80 syscallarg(netbsd32_intp) status;
81 syscallarg(int) options;
82 } */
83 struct linux32_sys_wait4_args ua;
84
85 SCARG(&ua, pid) = SCARG(uap, pid);
86 SCARG(&ua, status) = SCARG(uap, status);
87 SCARG(&ua, options) = SCARG(uap, options);
88 NETBSD32PTR32(SCARG(&ua, rusage), NULL);
89
90 return linux32_sys_wait4(l, &ua, retval);
91 }
92
93 int
linux32_sys_wait4(struct lwp * l,const struct linux32_sys_wait4_args * uap,register_t * retval)94 linux32_sys_wait4(struct lwp *l, const struct linux32_sys_wait4_args *uap, register_t *retval)
95 {
96 /* {
97 syscallarg(int) pid;
98 syscallarg(netbsd32_intp) status;
99 syscallarg(int) options;
100 syscallarg(netbsd32_rusage50p_t) rusage;
101 } */
102 int error, status, linux_options, options, pid;
103 struct netbsd32_rusage50 ru32;
104 struct rusage ru;
105 proc_t *p;
106
107 linux_options = SCARG(uap, options);
108 if (linux_options & ~(LINUX_WAIT4_KNOWNFLAGS))
109 return EINVAL;
110
111 options = 0;
112 if (linux_options & LINUX_WNOHANG)
113 options |= WNOHANG;
114 if (linux_options & LINUX_WUNTRACED)
115 options |= WUNTRACED;
116 if (linux_options & LINUX_WALL)
117 options |= WALLSIG;
118 if (linux_options & LINUX_WCLONE)
119 options |= WALTSIG;
120
121 pid = SCARG(uap, pid);
122 error = do_sys_wait(&pid, &status, options,
123 SCARG_P32(uap, rusage) != NULL ? &ru : NULL);
124 retval[0] = pid;
125 if (pid == 0)
126 return error;
127
128 p = curproc;
129 mutex_enter(p->p_lock);
130 sigdelset(&p->p_sigpend.sp_set, SIGCHLD); /* XXXAD ksiginfo leak */
131 mutex_exit(p->p_lock);
132
133 if (SCARG_P32(uap, rusage) != NULL) {
134 netbsd32_from_rusage50(&ru, &ru32);
135 error = copyout(&ru32, SCARG_P32(uap, rusage), sizeof(ru32));
136 }
137
138 if (error == 0 && SCARG_P32(uap, status) != NULL) {
139 status = bsd_to_linux_wstat(status);
140 error = copyout(&status, SCARG_P32(uap, status), sizeof(status));
141 }
142
143 return error;
144 }
145