bsd-user: Implement rfork(2) system call.

[mirror_qemu.git] / bsd-user / bsd-proc.c

diff --git a/bsd-user/bsd-proc.c b/bsd-user/bsd-proc.c
index 68410a0aa9dd776eafb4f08127425932a0aeca83..ca3c1bf94f4a9a790c8af3358877d44f295e9946 100644 (file)
--- a/bsd-user/bsd-proc.c
+++ b/bsd-user/bsd-proc.c
@@ -38,3 +38,108 @@ int target_to_host_resource(int code)
     return code;
 }
 
+rlim_t target_to_host_rlim(abi_llong target_rlim)
+{
+    return tswap64(target_rlim);
+}
+
+abi_llong host_to_target_rlim(rlim_t rlim)
+{
+    return tswap64(rlim);
+}
+
+void h2g_rusage(const struct rusage *rusage,
+                struct target_freebsd_rusage *target_rusage)
+{
+    __put_user(rusage->ru_utime.tv_sec, &target_rusage->ru_utime.tv_sec);
+    __put_user(rusage->ru_utime.tv_usec, &target_rusage->ru_utime.tv_usec);
+
+    __put_user(rusage->ru_stime.tv_sec, &target_rusage->ru_stime.tv_sec);
+    __put_user(rusage->ru_stime.tv_usec, &target_rusage->ru_stime.tv_usec);
+
+    __put_user(rusage->ru_maxrss, &target_rusage->ru_maxrss);
+    __put_user(rusage->ru_idrss, &target_rusage->ru_idrss);
+    __put_user(rusage->ru_idrss, &target_rusage->ru_idrss);
+    __put_user(rusage->ru_isrss, &target_rusage->ru_isrss);
+    __put_user(rusage->ru_minflt, &target_rusage->ru_minflt);
+    __put_user(rusage->ru_majflt, &target_rusage->ru_majflt);
+    __put_user(rusage->ru_nswap, &target_rusage->ru_nswap);
+    __put_user(rusage->ru_inblock, &target_rusage->ru_inblock);
+    __put_user(rusage->ru_oublock, &target_rusage->ru_oublock);
+    __put_user(rusage->ru_msgsnd, &target_rusage->ru_msgsnd);
+    __put_user(rusage->ru_msgrcv, &target_rusage->ru_msgrcv);
+    __put_user(rusage->ru_nsignals, &target_rusage->ru_nsignals);
+    __put_user(rusage->ru_nvcsw, &target_rusage->ru_nvcsw);
+    __put_user(rusage->ru_nivcsw, &target_rusage->ru_nivcsw);
+}
+
+abi_long host_to_target_rusage(abi_ulong target_addr,
+        const struct rusage *rusage)
+{
+    struct target_freebsd_rusage *target_rusage;
+
+    if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) {
+        return -TARGET_EFAULT;
+    }
+    h2g_rusage(rusage, target_rusage);
+    unlock_user_struct(target_rusage, target_addr, 1);
+
+    return 0;
+}
+
+abi_long host_to_target_wrusage(abi_ulong target_addr,
+                                const struct __wrusage *wrusage)
+{
+    struct target_freebsd__wrusage *target_wrusage;
+
+    if (!lock_user_struct(VERIFY_WRITE, target_wrusage, target_addr, 0)) {
+        return -TARGET_EFAULT;
+    }
+    h2g_rusage(&wrusage->wru_self, &target_wrusage->wru_self);
+    h2g_rusage(&wrusage->wru_children, &target_wrusage->wru_children);
+    unlock_user_struct(target_wrusage, target_addr, 1);
+
+    return 0;
+}
+
+/*
+ * wait status conversion.
+ *
+ * Map host to target signal numbers for the wait family of syscalls.
+ * Assume all other status bits are the same.
+ */
+int host_to_target_waitstatus(int status)
+{
+    if (WIFSIGNALED(status)) {
+        return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f);
+    }
+    if (WIFSTOPPED(status)) {
+        return (host_to_target_signal(WSTOPSIG(status)) << 8) | (status & 0xff);
+    }
+    return status;
+}
+
+int bsd_get_ncpu(void)
+{
+    int ncpu = -1;
+    cpuset_t mask;
+
+    CPU_ZERO(&mask);
+
+    if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1, sizeof(mask),
+                           &mask) == 0) {
+        ncpu = CPU_COUNT(&mask);
+    }
+
+    if (ncpu == -1) {
+        ncpu = sysconf(_SC_NPROCESSORS_ONLN);
+    }
+
+    if (ncpu == -1) {
+        gemu_log("XXX Missing bsd_get_ncpu() implementation\n");
+        ncpu = 1;
+    }
+
+    return ncpu;
+}
+