diff options
Diffstat (limited to 'bsd-user/bsd-proc.c')
| -rw-r--r-- | bsd-user/bsd-proc.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/bsd-user/bsd-proc.c b/bsd-user/bsd-proc.c new file mode 100644 index 0000000000..ca3c1bf94f --- /dev/null +++ b/bsd-user/bsd-proc.c @@ -0,0 +1,145 @@ +/* + * BSD process related system call helpers + * + * Copyright (c) 2013-14 Stacey D. Son + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ +#include "qemu/osdep.h" + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/cpuset.h> +#include <sys/resource.h> +#include <sys/wait.h> + +#include "qemu.h" +#include "qemu-bsd.h" +#include "signal-common.h" + +#include "bsd-proc.h" + +/* + * resource/rusage conversion + */ +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; +} + |