@samitouri / QOSamiQemu
Code Commits Issues Pulls Sessions CI/CD
master
master
c 133 lines 3.57 KB
Raw
1 /*
2 * BSD process related system call helpers
3 *
4 * Copyright (c) 2013-2014 Stacey D. Son
5 *
6 * SPDX-License-Identifier: GPL-2.0-or-later
7 */
8 #include "qemu/osdep.h"
9
10 #include <sys/param.h>
11 #include <sys/cpuset.h>
12 #include <sys/resource.h>
13 #include <sys/wait.h>
14
15 #include "qemu.h"
16 #include "qemu-bsd.h"
17 #include "signal-common.h"
18
19 #include "bsd-proc.h"
20
21 /*
22 * resource/rusage conversion
23 */
24 int target_to_host_resource(int code)
25 {
26 return code;
27 }
28
29 rlim_t target_to_host_rlim(abi_llong target_rlim)
30 {
31 return tswap64(target_rlim);
32 }
33
34 abi_llong host_to_target_rlim(rlim_t rlim)
35 {
36 return tswap64(rlim);
37 }
38
39 void h2g_rusage(const struct rusage *rusage,
40 struct target_freebsd_rusage *target_rusage)
41 {
42 __put_user(rusage->ru_utime.tv_sec, &target_rusage->ru_utime.tv_sec);
43 __put_user(rusage->ru_utime.tv_usec, &target_rusage->ru_utime.tv_usec);
44
45 __put_user(rusage->ru_stime.tv_sec, &target_rusage->ru_stime.tv_sec);
46 __put_user(rusage->ru_stime.tv_usec, &target_rusage->ru_stime.tv_usec);
47
48 __put_user(rusage->ru_maxrss, &target_rusage->ru_maxrss);
49 __put_user(rusage->ru_idrss, &target_rusage->ru_idrss);
50 __put_user(rusage->ru_idrss, &target_rusage->ru_idrss);
51 __put_user(rusage->ru_isrss, &target_rusage->ru_isrss);
52 __put_user(rusage->ru_minflt, &target_rusage->ru_minflt);
53 __put_user(rusage->ru_majflt, &target_rusage->ru_majflt);
54 __put_user(rusage->ru_nswap, &target_rusage->ru_nswap);
55 __put_user(rusage->ru_inblock, &target_rusage->ru_inblock);
56 __put_user(rusage->ru_oublock, &target_rusage->ru_oublock);
57 __put_user(rusage->ru_msgsnd, &target_rusage->ru_msgsnd);
58 __put_user(rusage->ru_msgrcv, &target_rusage->ru_msgrcv);
59 __put_user(rusage->ru_nsignals, &target_rusage->ru_nsignals);
60 __put_user(rusage->ru_nvcsw, &target_rusage->ru_nvcsw);
61 __put_user(rusage->ru_nivcsw, &target_rusage->ru_nivcsw);
62 }
63
64 abi_long host_to_target_rusage(abi_ulong target_addr,
65 const struct rusage *rusage)
66 {
67 struct target_freebsd_rusage *target_rusage;
68
69 if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) {
70 return -TARGET_EFAULT;
71 }
72 h2g_rusage(rusage, target_rusage);
73 unlock_user_struct(target_rusage, target_addr, 1);
74
75 return 0;
76 }
77
78 abi_long host_to_target_wrusage(abi_ulong target_addr,
79 const struct __wrusage *wrusage)
80 {
81 struct target_freebsd__wrusage *target_wrusage;
82
83 if (!lock_user_struct(VERIFY_WRITE, target_wrusage, target_addr, 0)) {
84 return -TARGET_EFAULT;
85 }
86 h2g_rusage(&wrusage->wru_self, &target_wrusage->wru_self);
87 h2g_rusage(&wrusage->wru_children, &target_wrusage->wru_children);
88 unlock_user_struct(target_wrusage, target_addr, 1);
89
90 return 0;
91 }
92
93 /*
94 * wait status conversion.
95 *
96 * Map host to target signal numbers for the wait family of syscalls.
97 * Assume all other status bits are the same.
98 */
99 int host_to_target_waitstatus(int status)
100 {
101 if (WIFSIGNALED(status)) {
102 return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
103 }
104 if (WIFSTOPPED(status)) {
105 return (host_to_target_signal(WSTOPSIG(status)) << 8) | (status & 0xff);
106 }
107 return status;
108 }
109
110 int bsd_get_ncpu(void)
111 {
112 int ncpu = -1;
113 cpuset_t mask;
114
115 CPU_ZERO(&mask);
116
117 if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1, sizeof(mask),
118 &mask) == 0) {
119 ncpu = CPU_COUNT(&mask);
120 }
121
122 if (ncpu == -1) {
123 ncpu = sysconf(_SC_NPROCESSORS_ONLN);
124 }
125
126 if (ncpu == -1) {
127 gemu_log("XXX Missing bsd_get_ncpu() implementation\n");
128 ncpu = 1;
129 }
130
131 return ncpu;
132 }
133