diff options
Diffstat (limited to 'bsd-user/freebsd')
| -rw-r--r-- | bsd-user/freebsd/meson.build | 1 | ||||
| -rw-r--r-- | bsd-user/freebsd/os-misc.h | 98 | ||||
| -rw-r--r-- | bsd-user/freebsd/os-proc.c | 480 | ||||
| -rw-r--r-- | bsd-user/freebsd/os-proc.h | 293 | ||||
| -rw-r--r-- | bsd-user/freebsd/os-syscall.c | 313 |
5 files changed, 1181 insertions, 4 deletions
diff --git a/bsd-user/freebsd/meson.build b/bsd-user/freebsd/meson.build index f2f047cca3..8fd6c7cfb8 100644 --- a/bsd-user/freebsd/meson.build +++ b/bsd-user/freebsd/meson.build @@ -1,5 +1,6 @@ bsd_user_ss.add(files( 'os-stat.c', + 'os-proc.c', 'os-sys.c', 'os-syscall.c', )) diff --git a/bsd-user/freebsd/os-misc.h b/bsd-user/freebsd/os-misc.h new file mode 100644 index 0000000000..71145764a4 --- /dev/null +++ b/bsd-user/freebsd/os-misc.h @@ -0,0 +1,98 @@ +/* + * miscellaneous FreeBSD system call shims + * + * 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/>. + */ + +#ifndef OS_MISC_H +#define OS_MISC_H + +#include <sys/cpuset.h> +#include <sys/random.h> +#include <sched.h> + +/* + * shm_open2 isn't exported, but the __sys_ alias is. We can use either for the + * static version, but to dynamically link we have to use the sys version. + */ +int __sys_shm_open2(const char *path, int flags, mode_t mode, int shmflags, + const char *); + +#if defined(__FreeBSD_version) && __FreeBSD_version >= 1300048 +/* shm_open2(2) */ +static inline abi_long do_freebsd_shm_open2(abi_ulong pathptr, abi_ulong flags, + abi_long mode, abi_ulong shmflags, abi_ulong nameptr) +{ + int ret; + void *uname, *upath; + + if (pathptr == (uintptr_t)SHM_ANON) { + upath = SHM_ANON; + } else { + upath = lock_user_string(pathptr); + if (upath == NULL) { + return -TARGET_EFAULT; + } + } + + uname = NULL; + if (nameptr != 0) { + uname = lock_user_string(nameptr); + if (uname == NULL) { + unlock_user(upath, pathptr, 0); + return -TARGET_EFAULT; + } + } + ret = get_errno(__sys_shm_open2(upath, + target_to_host_bitmask(flags, fcntl_flags_tbl), mode, + target_to_host_bitmask(shmflags, shmflag_flags_tbl), uname)); + + if (upath != SHM_ANON) { + unlock_user(upath, pathptr, 0); + } + if (uname != NULL) { + unlock_user(uname, nameptr, 0); + } + return ret; +} +#endif /* __FreeBSD_version >= 1300048 */ + +#if defined(__FreeBSD_version) && __FreeBSD_version >= 1300049 +/* shm_rename(2) */ +static inline abi_long do_freebsd_shm_rename(abi_ulong fromptr, abi_ulong toptr, + abi_ulong flags) +{ + int ret; + void *ufrom, *uto; + + ufrom = lock_user_string(fromptr); + if (ufrom == NULL) { + return -TARGET_EFAULT; + } + uto = lock_user_string(toptr); + if (uto == NULL) { + unlock_user(ufrom, fromptr, 0); + return -TARGET_EFAULT; + } + ret = get_errno(shm_rename(ufrom, uto, flags)); + unlock_user(ufrom, fromptr, 0); + unlock_user(uto, toptr, 0); + + return ret; +} +#endif /* __FreeBSD_version >= 1300049 */ + +#endif /* OS_MISC_H */ diff --git a/bsd-user/freebsd/os-proc.c b/bsd-user/freebsd/os-proc.c new file mode 100644 index 0000000000..4e67ae4d56 --- /dev/null +++ b/bsd-user/freebsd/os-proc.c @@ -0,0 +1,480 @@ +/* + * FreeBSD process related emulation code + * + * Copyright (c) 2013-15 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/queue.h> +#include <sys/sysctl.h> +struct kinfo_proc; +#include <libprocstat.h> + +#include "qemu.h" + +/* + * Get the filename for the given file descriptor. + * Note that this may return NULL (fail) if no longer cached in the kernel. + */ +static char * +get_filename_from_fd(pid_t pid, int fd, char *filename, size_t len) +{ + char *ret = NULL; + unsigned int cnt; + struct procstat *procstat = NULL; + struct kinfo_proc *kp = NULL; + struct filestat_list *head = NULL; + struct filestat *fst; + + procstat = procstat_open_sysctl(); + if (procstat == NULL) { + goto out; + } + + kp = procstat_getprocs(procstat, KERN_PROC_PID, pid, &cnt); + if (kp == NULL) { + goto out; + } + + head = procstat_getfiles(procstat, kp, 0); + if (head == NULL) { + goto out; + } + + STAILQ_FOREACH(fst, head, next) { + if (fd == fst->fs_fd) { + if (fst->fs_path != NULL) { + (void)strlcpy(filename, fst->fs_path, len); + ret = filename; + } + break; + } + } + +out: + if (head != NULL) { + procstat_freefiles(procstat, head); + } + if (kp != NULL) { + procstat_freeprocs(procstat, kp); + } + if (procstat != NULL) { + procstat_close(procstat); + } + return ret; +} + +/* + * execve/fexecve + */ +abi_long freebsd_exec_common(abi_ulong path_or_fd, abi_ulong guest_argp, + abi_ulong guest_envp, int do_fexec) +{ + char **argp, **envp, **qargp, **qarg1, **qarg0, **qargend; + int argc, envc; + abi_ulong gp; + abi_ulong addr; + char **q; + int total_size = 0; + void *p; + abi_long ret; + + argc = 0; + for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { + if (get_user_ual(addr, gp)) { + return -TARGET_EFAULT; + } + if (!addr) { + break; + } + argc++; + } + envc = 0; + for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { + if (get_user_ual(addr, gp)) { + return -TARGET_EFAULT; + } + if (!addr) { + break; + } + envc++; + } + + qarg0 = argp = g_new0(char *, argc + 9); + /* save the first agrument for the emulator */ + *argp++ = (char *)getprogname(); + qargp = argp; + *argp++ = (char *)getprogname(); + qarg1 = argp; + envp = g_new0(char *, envc + 1); + for (gp = guest_argp, q = argp; gp; gp += sizeof(abi_ulong), q++) { + if (get_user_ual(addr, gp)) { + ret = -TARGET_EFAULT; + goto execve_end; + } + if (!addr) { + break; + } + *q = lock_user_string(addr); + if (*q == NULL) { + ret = -TARGET_EFAULT; + goto execve_end; + } + total_size += strlen(*q) + 1; + } + *q++ = NULL; + qargend = q; + + for (gp = guest_envp, q = envp; gp; gp += sizeof(abi_ulong), q++) { + if (get_user_ual(addr, gp)) { + ret = -TARGET_EFAULT; + goto execve_end; + } + if (!addr) { + break; + } + *q = lock_user_string(addr); + if (*q == NULL) { + ret = -TARGET_EFAULT; + goto execve_end; + } + total_size += strlen(*q) + 1; + } + *q = NULL; + + /* + * This case will not be caught by the host's execve() if its + * page size is bigger than the target's. + */ + if (total_size > MAX_ARG_PAGES * TARGET_PAGE_SIZE) { + ret = -TARGET_E2BIG; + goto execve_end; + } + + if (do_fexec) { + if (((int)path_or_fd > 0 && + is_target_elf_binary((int)path_or_fd)) == 1) { + char execpath[PATH_MAX]; + + /* + * The executable is an elf binary for the target + * arch. execve() it using the emulator if we can + * determine the filename path from the fd. + */ + if (get_filename_from_fd(getpid(), (int)path_or_fd, execpath, + sizeof(execpath)) != NULL) { + memmove(qarg1 + 2, qarg1, (qargend - qarg1) * sizeof(*qarg1)); + qarg1[1] = qarg1[0]; + qarg1[0] = (char *)"-0"; + qarg1 += 2; + qargend += 2; + *qarg1 = execpath; +#ifndef DONT_INHERIT_INTERP_PREFIX + memmove(qarg1 + 2, qarg1, (qargend - qarg1) * sizeof(*qarg1)); + *qarg1++ = (char *)"-L"; + *qarg1++ = (char *)interp_prefix; +#endif + ret = get_errno(execve(qemu_proc_pathname, qargp, envp)); + } else { + /* Getting the filename path failed. */ + ret = -TARGET_EBADF; + goto execve_end; + } + } else { + ret = get_errno(fexecve((int)path_or_fd, argp, envp)); + } + } else { + int fd; + + p = lock_user_string(path_or_fd); + if (p == NULL) { + ret = -TARGET_EFAULT; + goto execve_end; + } + + /* + * Check the header and see if it a target elf binary. If so + * then execute using qemu user mode emulator. + */ + fd = open(p, O_RDONLY | O_CLOEXEC); + if (fd > 0 && is_target_elf_binary(fd) == 1) { + close(fd); + /* execve() as a target binary using emulator. */ + memmove(qarg1 + 2, qarg1, (qargend - qarg1) * sizeof(*qarg1)); + qarg1[1] = qarg1[0]; + qarg1[0] = (char *)"-0"; + qarg1 += 2; + qargend += 2; + *qarg1 = (char *)p; +#ifndef DONT_INHERIT_INTERP_PREFIX + memmove(qarg1 + 2, qarg1, (qargend - qarg1) * sizeof(*qarg1)); + *qarg1++ = (char *)"-L"; + *qarg1++ = (char *)interp_prefix; +#endif + ret = get_errno(execve(qemu_proc_pathname, qargp, envp)); + } else { + close(fd); + /* Execve() as a host native binary. */ + ret = get_errno(execve(p, argp, envp)); + } + unlock_user(p, path_or_fd, 0); + } + +execve_end: + for (gp = guest_argp, q = argp; *q; gp += sizeof(abi_ulong), q++) { + if (get_user_ual(addr, gp) || !addr) { + break; + } + unlock_user(*q, addr, 0); + } + + for (gp = guest_envp, q = envp; *q; gp += sizeof(abi_ulong), q++) { + if (get_user_ual(addr, gp) || !addr) { + break; + } + unlock_user(*q, addr, 0); + } + + g_free(qarg0); + g_free(envp); + + return ret; +} + +#include <sys/procctl.h> + +static abi_long +t2h_procctl_cmd(int target_cmd, int *host_cmd) +{ + switch (target_cmd) { + case TARGET_PROC_SPROTECT: + *host_cmd = PROC_SPROTECT; + break; + + case TARGET_PROC_REAP_ACQUIRE: + *host_cmd = PROC_REAP_ACQUIRE; + break; + + case TARGET_PROC_REAP_RELEASE: + *host_cmd = PROC_REAP_RELEASE; + break; + + case TARGET_PROC_REAP_STATUS: + *host_cmd = PROC_REAP_STATUS; + break; + + case TARGET_PROC_REAP_KILL: + *host_cmd = PROC_REAP_KILL; + break; + + default: + return -TARGET_EINVAL; + } + + return 0; +} + +static abi_long +h2t_reaper_status(struct procctl_reaper_status *host_rs, + abi_ulong target_rs_addr) +{ + struct target_procctl_reaper_status *target_rs; + + if (!lock_user_struct(VERIFY_WRITE, target_rs, target_rs_addr, 0)) { + return -TARGET_EFAULT; + } + __put_user(host_rs->rs_flags, &target_rs->rs_flags); + __put_user(host_rs->rs_children, &target_rs->rs_children); + __put_user(host_rs->rs_descendants, &target_rs->rs_descendants); + __put_user(host_rs->rs_reaper, &target_rs->rs_reaper); + __put_user(host_rs->rs_pid, &target_rs->rs_pid); + unlock_user_struct(target_rs, target_rs_addr, 1); + + return 0; +} + +static abi_long +t2h_reaper_kill(abi_ulong target_rk_addr, struct procctl_reaper_kill *host_rk) +{ + struct target_procctl_reaper_kill *target_rk; + + if (!lock_user_struct(VERIFY_READ, target_rk, target_rk_addr, 1)) { + return -TARGET_EFAULT; + } + __get_user(host_rk->rk_sig, &target_rk->rk_sig); + __get_user(host_rk->rk_flags, &target_rk->rk_flags); + __get_user(host_rk->rk_subtree, &target_rk->rk_subtree); + __get_user(host_rk->rk_killed, &target_rk->rk_killed); + __get_user(host_rk->rk_fpid, &target_rk->rk_fpid); + unlock_user_struct(target_rk, target_rk_addr, 0); + + return 0; +} + +static abi_long +h2t_reaper_kill(struct procctl_reaper_kill *host_rk, abi_ulong target_rk_addr) +{ + struct target_procctl_reaper_kill *target_rk; + + if (!lock_user_struct(VERIFY_WRITE, target_rk, target_rk_addr, 0)) { + return -TARGET_EFAULT; + } + __put_user(host_rk->rk_sig, &target_rk->rk_sig); + __put_user(host_rk->rk_flags, &target_rk->rk_flags); + __put_user(host_rk->rk_subtree, &target_rk->rk_subtree); + __put_user(host_rk->rk_killed, &target_rk->rk_killed); + __put_user(host_rk->rk_fpid, &target_rk->rk_fpid); + unlock_user_struct(target_rk, target_rk_addr, 1); + + return 0; +} + +static abi_long +h2t_procctl_reaper_pidinfo(struct procctl_reaper_pidinfo *host_pi, + abi_ulong target_pi_addr) +{ + struct target_procctl_reaper_pidinfo *target_pi; + + if (!lock_user_struct(VERIFY_WRITE, target_pi, target_pi_addr, 0)) { + return -TARGET_EFAULT; + } + __put_user(host_pi->pi_pid, &target_pi->pi_pid); + __put_user(host_pi->pi_subtree, &target_pi->pi_subtree); + __put_user(host_pi->pi_flags, &target_pi->pi_flags); + unlock_user_struct(target_pi, target_pi_addr, 1); + + return 0; +} + +abi_long +do_freebsd_procctl(void *cpu_env, int idtype, abi_ulong arg2, abi_ulong arg3, + abi_ulong arg4, abi_ulong arg5, abi_ulong arg6) +{ + abi_long error = 0, target_rp_pids; + void *data; + int host_cmd, flags; + uint32_t u, target_rp_count; + g_autofree union { + struct procctl_reaper_status rs; + struct procctl_reaper_pids rp; + struct procctl_reaper_kill rk; + } host; + struct target_procctl_reaper_pids *target_rp; + id_t id; /* 64-bit */ + int target_cmd; + abi_ulong target_arg; + +#if TARGET_ABI_BITS == 32 + /* See if we need to align the register pairs. */ + if (regpairs_aligned(cpu_env)) { + id = (id_t)target_arg64(arg3, arg4); + target_cmd = (int)arg5; + target_arg = arg6; + } else { + id = (id_t)target_arg64(arg2, arg3); + target_cmd = (int)arg4; + target_arg = arg5; + } +#else + id = (id_t)arg2; + target_cmd = (int)arg3; + target_arg = arg4; +#endif + + error = t2h_procctl_cmd(target_cmd, &host_cmd); + if (error) { + return error; + } + switch (host_cmd) { + case PROC_SPROTECT: + data = &flags; + break; + + case PROC_REAP_ACQUIRE: + case PROC_REAP_RELEASE: + if (target_arg == 0) { + data = NULL; + } else { + error = -TARGET_EINVAL; + } + break; + + case PROC_REAP_STATUS: + data = &host.rs; + break; + + case PROC_REAP_GETPIDS: + if (!lock_user_struct(VERIFY_READ, target_rp, target_arg, 1)) { + return -TARGET_EFAULT; + } + __get_user(target_rp_count, &target_rp->rp_count); + __get_user(target_rp_pids, &target_rp->rp_pids); + unlock_user_struct(target_rp, target_arg, 0); + host.rp.rp_count = target_rp_count; + host.rp.rp_pids = g_try_new(struct procctl_reaper_pidinfo, + target_rp_count); + + if (host.rp.rp_pids == NULL) { + error = -TARGET_ENOMEM; + } else { + data = &host.rp; + } + break; + + case PROC_REAP_KILL: + error = t2h_reaper_kill(target_arg, &host.rk); + break; + } + + if (error) { + return error; + } + error = get_errno(procctl(idtype, id, host_cmd, data)); + + if (error) { + return error; + } + switch (host_cmd) { + case PROC_SPROTECT: + if (put_user_s32(flags, target_arg)) { + return -TARGET_EFAULT; + } + break; + + case PROC_REAP_STATUS: + error = h2t_reaper_status(&host.rs, target_arg); + break; + + case PROC_REAP_GETPIDS: + /* copyout reaper pidinfo */ + for (u = 0; u < target_rp_count; u++) { + error = h2t_procctl_reaper_pidinfo(&host.rp.rp_pids[u], + target_rp_pids + + (u * sizeof(struct target_procctl_reaper_pidinfo))); + if (error) { + break; + } + } + break; + + case PROC_REAP_KILL: + error = h2t_reaper_kill(&host.rk, target_arg); + break; + } + + return error; +} diff --git a/bsd-user/freebsd/os-proc.h b/bsd-user/freebsd/os-proc.h new file mode 100644 index 0000000000..d641878034 --- /dev/null +++ b/bsd-user/freebsd/os-proc.h @@ -0,0 +1,293 @@ +/* + * process related system call shims and definitions + * + * 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/>. + */ + +#ifndef BSD_USER_FREEBSD_OS_PROC_H +#define BSD_USER_FREEBSD_OS_PROC_H + +#include <sys/param.h> +#include <sys/procctl.h> +#include <sys/signal.h> +#include <sys/types.h> +#include <sys/procdesc.h> +#include <sys/wait.h> +#include <unistd.h> + +#include "target_arch_cpu.h" + +pid_t safe_wait4(pid_t wpid, int *status, int options, struct rusage *rusage); +pid_t safe_wait6(idtype_t idtype, id_t id, int *status, int options, + struct __wrusage *wrusage, siginfo_t *infop); + +extern int __setugid(int flag); + +/* execve(2) */ +static inline abi_long do_freebsd_execve(abi_ulong path_or_fd, abi_ulong argp, + abi_ulong envp) +{ + + return freebsd_exec_common(path_or_fd, argp, envp, 0); +} + +/* fexecve(2) */ +static inline abi_long do_freebsd_fexecve(abi_ulong path_or_fd, abi_ulong argp, + abi_ulong envp) +{ + + return freebsd_exec_common(path_or_fd, argp, envp, 1); +} + +/* wait4(2) */ +static inline abi_long do_freebsd_wait4(abi_long arg1, abi_ulong target_status, + abi_long arg3, abi_ulong target_rusage) +{ + abi_long ret; + int status; + struct rusage rusage, *rusage_ptr = NULL; + + if (target_rusage) { + rusage_ptr = &rusage; + } + ret = get_errno(safe_wait4(arg1, &status, arg3, rusage_ptr)); + + if (ret < 0) { + return ret; + } + if (target_status != 0) { + status = host_to_target_waitstatus(status); + if (put_user_s32(status, target_status) != 0) { + return -TARGET_EFAULT; + } + } + if (target_rusage != 0) { + host_to_target_rusage(target_rusage, &rusage); + } + return ret; +} + +/* wait6(2) */ +static inline abi_long do_freebsd_wait6(void *cpu_env, abi_long idtype, + abi_long id1, abi_long id2, + abi_ulong target_status, abi_long options, abi_ulong target_wrusage, + abi_ulong target_infop, abi_ulong pad1) +{ + abi_long ret; + int status; + struct __wrusage wrusage, *wrusage_ptr = NULL; + siginfo_t info; + void *p; + + if (regpairs_aligned(cpu_env) != 0) { + /* printf("shifting args\n"); */ + /* 64-bit id is aligned, so shift all the arguments over by one */ + id1 = id2; + id2 = target_status; + target_status = options; + options = target_wrusage; + target_wrusage = target_infop; + target_infop = pad1; + } + + if (target_wrusage) { + wrusage_ptr = &wrusage; + } + ret = get_errno(safe_wait6(idtype, target_arg64(id1, id2), + &status, options, wrusage_ptr, &info)); + + if (ret < 0) { + return ret; + } + if (target_status != 0) { + status = host_to_target_waitstatus(status); + if (put_user_s32(status, target_status) != 0) { + return -TARGET_EFAULT; + } + } + if (target_wrusage != 0) { + host_to_target_wrusage(target_wrusage, &wrusage); + } + if (target_infop != 0) { + p = lock_user(VERIFY_WRITE, target_infop, sizeof(target_siginfo_t), 0); + if (p == NULL) { + return -TARGET_EFAULT; + } + host_to_target_siginfo(p, &info); + unlock_user(p, target_infop, sizeof(target_siginfo_t)); + } + return ret; +} + +/* setloginclass(2) */ +static inline abi_long do_freebsd_setloginclass(abi_ulong arg1) +{ + abi_long ret; + void *p; + + p = lock_user_string(arg1); + if (p == NULL) { + return -TARGET_EFAULT; + } + ret = get_errno(setloginclass(p)); + unlock_user(p, arg1, 0); + + return ret; +} + +/* getloginclass(2) */ +static inline abi_long do_freebsd_getloginclass(abi_ulong arg1, abi_ulong arg2) +{ + abi_long ret; + void *p; + + p = lock_user(VERIFY_WRITE, arg1, arg2, 0); + if (p == NULL) { + return -TARGET_EFAULT; + } + ret = get_errno(getloginclass(p, arg2)); + unlock_user(p, arg1, arg2); + + return ret; +} + +/* pdgetpid(2) */ +static inline abi_long do_freebsd_pdgetpid(abi_long fd, abi_ulong target_pidp) +{ + abi_long ret; + pid_t pid; + + ret = get_errno(pdgetpid(fd, &pid)); + if (!is_error(ret)) { + if (put_user_u32(pid, target_pidp)) { + return -TARGET_EFAULT; + } + } + return ret; +} + +/* undocumented __setugid */ +static inline abi_long do_freebsd___setugid(abi_long arg1) +{ + return -TARGET_ENOSYS; +} + +/* fork(2) */ +static inline abi_long do_freebsd_fork(void *cpu_env) +{ + abi_long ret; + abi_ulong child_flag; + + fork_start(); + ret = fork(); + if (ret == 0) { + /* child */ + child_flag = 1; + target_cpu_clone_regs(cpu_env, 0); + } else { + /* parent */ + child_flag = 0; + } + + /* + * The fork system call sets a child flag in the second return + * value: 0 for parent process, 1 for child process. + */ + set_second_rval(cpu_env, child_flag); + + fork_end(child_flag); + + return ret; +} + +/* vfork(2) */ +static inline abi_long do_freebsd_vfork(void *cpu_env) +{ + return do_freebsd_fork(cpu_env); +} + +/* rfork(2) */ +static inline abi_long do_freebsd_rfork(void *cpu_env, abi_long flags) +{ + abi_long ret; + abi_ulong child_flag; + + /* + * XXX We need to handle RFMEM here, as well. Neither are safe to execute + * as-is on x86 hosts because they'll split memory but not the stack, + * wreaking havoc on host architectures that use the stack to store the + * return address as both threads try to pop it off. Rejecting RFSPAWN + * entirely for now is ok, the only consumer at the moment is posix_spawn + * and it will fall back to classic vfork(2) if we return EINVAL. + */ + if ((flags & TARGET_RFSPAWN) != 0) { + return -TARGET_EINVAL; + } + fork_start(); + ret = rfork(flags); + if (ret == 0) { + /* child */ + child_flag = 1; + target_cpu_clone_regs(cpu_env, 0); + } else { + /* parent */ + child_flag = 0; + } + + /* + * The fork system call sets a child flag in the second return + * value: 0 for parent process, 1 for child process. + */ + set_second_rval(cpu_env, child_flag); + fork_end(child_flag); + + return ret; + +} + +/* pdfork(2) */ +static inline abi_long do_freebsd_pdfork(void *cpu_env, abi_ulong target_fdp, + abi_long flags) +{ + abi_long ret; + abi_ulong child_flag; + int fd; + + fork_start(); + ret = pdfork(&fd, flags); + if (ret == 0) { + /* child */ + child_flag = 1; + target_cpu_clone_regs(cpu_env, 0); + } else { + /* parent */ + child_flag = 0; + if (put_user_s32(fd, target_fdp)) { + return -TARGET_EFAULT; + } + } + + /* + * The fork system call sets a child flag in the second return + * value: 0 for parent process, 1 for child process. + */ + set_second_rval(cpu_env, child_flag); + fork_end(child_flag); + + return ret; +} + +#endif /* BSD_USER_FREEBSD_OS_PROC_H */ diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c index fa60df529e..ca2f6fdb66 100644 --- a/bsd-user/freebsd/os-syscall.c +++ b/bsd-user/freebsd/os-syscall.c @@ -33,11 +33,15 @@ #include "signal-common.h" #include "user/syscall-trace.h" +/* BSD independent syscall shims */ #include "bsd-file.h" +#include "bsd-mem.h" #include "bsd-proc.h" -/* *BSD dependent syscall shims */ +/* BSD dependent syscall shims */ #include "os-stat.h" +#include "os-proc.h" +#include "os-misc.h" /* I/O */ safe_syscall3(int, open, const char *, path, int, flags, mode_t, mode); @@ -58,9 +62,11 @@ safe_syscall3(ssize_t, writev, int, fd, const struct iovec *, iov, int, iovcnt); safe_syscall4(ssize_t, pwritev, int, fd, const struct iovec *, iov, int, iovcnt, off_t, offset); -void target_set_brk(abi_ulong new_brk) -{ -} +/* used in os-proc */ +safe_syscall4(pid_t, wait4, pid_t, wpid, int *, status, int, options, + struct rusage *, rusage); +safe_syscall6(pid_t, wait6, idtype_t, idtype, id_t, id, int *, status, int, + options, struct __wrusage *, wrusage, siginfo_t *, infop); /* * errno conversion. @@ -219,10 +225,207 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1, /* * process system calls */ + case TARGET_FREEBSD_NR_fork: /* fork(2) */ + ret = do_freebsd_fork(cpu_env); + break; + + case TARGET_FREEBSD_NR_vfork: /* vfork(2) */ + ret = do_freebsd_vfork(cpu_env); + break; + + case TARGET_FREEBSD_NR_rfork: /* rfork(2) */ + ret = do_freebsd_rfork(cpu_env, arg1); + break; + + case TARGET_FREEBSD_NR_pdfork: /* pdfork(2) */ + ret = do_freebsd_pdfork(cpu_env, arg1, arg2); + break; + + case TARGET_FREEBSD_NR_execve: /* execve(2) */ + ret = do_freebsd_execve(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_fexecve: /* fexecve(2) */ + ret = do_freebsd_fexecve(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_wait4: /* wait4(2) */ + ret = do_freebsd_wait4(arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_wait6: /* wait6(2) */ + ret = do_freebsd_wait6(cpu_env, arg1, arg2, arg3, + arg4, arg5, arg6, arg7, arg8); + break; + case TARGET_FREEBSD_NR_exit: /* exit(2) */ ret = do_bsd_exit(cpu_env, arg1); break; + case TARGET_FREEBSD_NR_getgroups: /* getgroups(2) */ + ret = do_bsd_getgroups(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_setgroups: /* setgroups(2) */ + ret = do_bsd_setgroups(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_umask: /* umask(2) */ + ret = do_bsd_umask(arg1); + break; + + case TARGET_FREEBSD_NR_setlogin: /* setlogin(2) */ + ret = do_bsd_setlogin(arg1); + break; + + case TARGET_FREEBSD_NR_getlogin: /* getlogin(2) */ + ret = do_bsd_getlogin(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_getrusage: /* getrusage(2) */ + ret = do_bsd_getrusage(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_getrlimit: /* getrlimit(2) */ + ret = do_bsd_getrlimit(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_setrlimit: /* setrlimit(2) */ + ret = do_bsd_setrlimit(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_getpid: /* getpid(2) */ + ret = do_bsd_getpid(); + break; + + case TARGET_FREEBSD_NR_getppid: /* getppid(2) */ + ret = do_bsd_getppid(); + break; + + case TARGET_FREEBSD_NR_getuid: /* getuid(2) */ + ret = do_bsd_getuid(); + break; + + case TARGET_FREEBSD_NR_geteuid: /* geteuid(2) */ + ret = do_bsd_geteuid(); + break; + + case TARGET_FREEBSD_NR_getgid: /* getgid(2) */ + ret = do_bsd_getgid(); + break; + + case TARGET_FREEBSD_NR_getegid: /* getegid(2) */ + ret = do_bsd_getegid(); + break; + + case TARGET_FREEBSD_NR_setuid: /* setuid(2) */ + ret = do_bsd_setuid(arg1); + break; + + case TARGET_FREEBSD_NR_seteuid: /* seteuid(2) */ + ret = do_bsd_seteuid(arg1); + break; + + case TARGET_FREEBSD_NR_setgid: /* setgid(2) */ + ret = do_bsd_setgid(arg1); + break; + + case TARGET_FREEBSD_NR_setegid: /* setegid(2) */ + ret = do_bsd_setegid(arg1); + break; + + case TARGET_FREEBSD_NR_getpgrp: /* getpgrp(2) */ + ret = do_bsd_getpgrp(); + break; + + case TARGET_FREEBSD_NR_getpgid: /* getpgid(2) */ + ret = do_bsd_getpgid(arg1); + break; + + case TARGET_FREEBSD_NR_setpgid: /* setpgid(2) */ + ret = do_bsd_setpgid(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_setreuid: /* setreuid(2) */ + ret = do_bsd_setreuid(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_setregid: /* setregid(2) */ + ret = do_bsd_setregid(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_getresuid: /* getresuid(2) */ + ret = do_bsd_getresuid(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_getresgid: /* getresgid(2) */ + ret = do_bsd_getresgid(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_setresuid: /* setresuid(2) */ + ret = do_bsd_setresuid(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_setresgid: /* setresgid(2) */ + ret = do_bsd_setresgid(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_getsid: /* getsid(2) */ + ret = do_bsd_getsid(arg1); + break; + + case TARGET_FREEBSD_NR_setsid: /* setsid(2) */ + ret = do_bsd_setsid(); + break; + + case TARGET_FREEBSD_NR_issetugid: /* issetugid(2) */ + ret = do_bsd_issetugid(); + break; + + case TARGET_FREEBSD_NR_profil: /* profil(2) */ + ret = do_bsd_profil(arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_ktrace: /* ktrace(2) */ + ret = do_bsd_ktrace(arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_setloginclass: /* setloginclass(2) */ + ret = do_freebsd_setloginclass(arg1); + break; + + case TARGET_FREEBSD_NR_getloginclass: /* getloginclass(2) */ + ret = do_freebsd_getloginclass(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_pdgetpid: /* pdgetpid(2) */ + ret = do_freebsd_pdgetpid(arg1, arg2); + break; + + case TARGET_FREEBSD_NR___setugid: /* undocumented */ + ret = do_freebsd___setugid(arg1); + break; + + case TARGET_FREEBSD_NR_utrace: /* utrace(2) */ + ret = do_bsd_utrace(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_ptrace: /* ptrace(2) */ + ret = do_bsd_ptrace(arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_getpriority: /* getpriority(2) */ + ret = do_bsd_getpriority(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_setpriority: /* setpriority(2) */ + ret = do_bsd_setpriority(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_procctl: /* procctl(2) */ + ret = do_freebsd_procctl(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); + break; + /* * File system calls. */ @@ -592,6 +795,108 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1, ret = do_freebsd_fcntl(arg1, arg2, arg3); break; + /* + * Memory management system calls. + */ + case TARGET_FREEBSD_NR_mmap: /* mmap(2) */ + ret = do_bsd_mmap(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6, arg7, + arg8); + break; + + case TARGET_FREEBSD_NR_munmap: /* munmap(2) */ + ret = do_bsd_munmap(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_mprotect: /* mprotect(2) */ + ret = do_bsd_mprotect(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_msync: /* msync(2) */ + ret = do_bsd_msync(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_mlock: /* mlock(2) */ + ret = do_bsd_mlock(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_munlock: /* munlock(2) */ + ret = do_bsd_munlock(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_mlockall: /* mlockall(2) */ + ret = do_bsd_mlockall(arg1); + break; + + case TARGET_FREEBSD_NR_munlockall: /* munlockall(2) */ + ret = do_bsd_munlockall(); + break; + + case TARGET_FREEBSD_NR_madvise: /* madvise(2) */ + ret = do_bsd_madvise(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_minherit: /* minherit(2) */ + ret = do_bsd_minherit(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_mincore: /* mincore(2) */ + ret = do_bsd_mincore(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_freebsd12_shm_open: /* shm_open(2) */ + ret = do_bsd_shm_open(arg1, arg2, arg3); + break; + +#if defined(__FreeBSD_version) && __FreeBSD_version >= 1300048 + case TARGET_FREEBSD_NR_shm_open2: /* shm_open2(2) */ + ret = do_freebsd_shm_open2(arg1, arg2, arg3, arg4, arg5); + break; +#endif + +#if defined(__FreeBSD_version) && __FreeBSD_version >= 1300049 + case TARGET_FREEBSD_NR_shm_rename: /* shm_rename(2) */ + ret = do_freebsd_shm_rename(arg1, arg2, arg3); + break; +#endif + + case TARGET_FREEBSD_NR_shm_unlink: /* shm_unlink(2) */ + ret = do_bsd_shm_unlink(arg1); + break; + + case TARGET_FREEBSD_NR_shmget: /* shmget(2) */ + ret = do_bsd_shmget(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_shmctl: /* shmctl(2) */ + ret = do_bsd_shmctl(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_shmat: /* shmat(2) */ + ret = do_bsd_shmat(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_shmdt: /* shmdt(2) */ + ret = do_bsd_shmdt(arg1); + break; + + case TARGET_FREEBSD_NR_freebsd11_vadvise: + ret = do_bsd_vadvise(); + break; + + case TARGET_FREEBSD_NR_sbrk: + ret = do_bsd_sbrk(); + break; + + case TARGET_FREEBSD_NR_sstk: + ret = do_bsd_sstk(); + break; + + /* + * Misc + */ + case TARGET_FREEBSD_NR_break: + ret = do_obreak(arg1); + break; /* * sys{ctl, arch, call} |