#define CONFIG_MEMORYSTATUS 1 // <rdar://problem/13604997>
#include <sys/types.h>
#include <spawn.h>
#include <spawn_private.h>
#include <sys/spawn_internal.h>
#include <sys/process_policy.h>
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
#include <string.h>
#include <strings.h>
#include <mach/port.h>
#include <mach/mach_param.h>
#include <mach/exception_types.h>
#include <mach/coalition.h>
#include <sys/kern_memorystatus.h>
int
posix_spawnattr_init(posix_spawnattr_t *attr)
{
_posix_spawnattr_t *psattrp = (_posix_spawnattr_t *)attr;
int err = 0;
if ((*psattrp = (_posix_spawnattr_t)malloc(sizeof(struct _posix_spawnattr))) == NULL) {
err = ENOMEM;
} else {
(*psattrp)->psa_flags = 0;
(*psattrp)->psa_sigdefault = 0;
(*psattrp)->psa_sigmask = 0;
(*psattrp)->psa_pgroup = 0;
memset((*psattrp)->psa_binprefs, 0,
sizeof((*psattrp)->psa_binprefs));
(*psattrp)->psa_ports = NULL;
(*psattrp)->psa_pcontrol = 0;
(*psattrp)->short_padding = 0;
(*psattrp)->flags_padding = 0;
(*psattrp)->psa_apptype = POSIX_SPAWN_PROCESS_TYPE_DEFAULT;
(*psattrp)->psa_jetsam_flags = 0;
(*psattrp)->psa_priority = -1;
(*psattrp)->psa_memlimit_active = -1;
(*psattrp)->psa_memlimit_inactive = -1;
(*psattrp)->psa_thread_limit = 0;
(*psattrp)->psa_cpumonitor_percent = 0;
(*psattrp)->psa_cpumonitor_interval = 0;
(*psattrp)->psa_mac_extensions = NULL;
(*psattrp)->psa_coalition_info = NULL;
(*psattrp)->psa_persona_info = NULL;
(*psattrp)->psa_posix_cred_info = NULL;
(*psattrp)->psa_reserved = 1;
(*psattrp)->psa_qos_clamp = POSIX_SPAWN_PROC_CLAMP_NONE;
(*psattrp)->psa_darwin_role = POSIX_SPAWN_DARWIN_ROLE_NONE;
(*psattrp)->psa_max_addr = 0;
}
return err;
}
static int posix_spawn_destroyportactions_np(posix_spawnattr_t *);
static int posix_spawn_destroycoalition_info_np(posix_spawnattr_t *);
static int posix_spawn_destroypersona_info_np(posix_spawnattr_t *);
static int posix_spawn_destroyposix_cred_info_np(posix_spawnattr_t *);
static int posix_spawn_destroymacpolicy_info_np(posix_spawnattr_t *);
int
posix_spawnattr_destroy(posix_spawnattr_t *attr)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
posix_spawn_destroyportactions_np(attr);
posix_spawn_destroycoalition_info_np(attr);
posix_spawn_destroypersona_info_np(attr);
posix_spawn_destroyposix_cred_info_np(attr);
posix_spawn_destroymacpolicy_info_np(attr);
free(psattr);
*attr = NULL;
return 0;
}
int
posix_spawnattr_setflags(posix_spawnattr_t *attr, short flags)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_flags = flags;
return 0;
}
int
posix_spawnattr_getflags(const posix_spawnattr_t * __restrict attr,
short * __restrict flagsp)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
*flagsp = psattr->psa_flags;
return 0;
}
int
posix_spawnattr_getsigdefault(const posix_spawnattr_t * __restrict attr,
sigset_t * __restrict sigdefault)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
*sigdefault = psattr->psa_sigdefault;
return 0;
}
int
posix_spawnattr_getpgroup(const posix_spawnattr_t * __restrict attr,
pid_t * __restrict pgroup)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
*pgroup = psattr->psa_pgroup;
return 0;
}
int
posix_spawnattr_getsigmask(const posix_spawnattr_t * __restrict attr,
sigset_t * __restrict sigmask)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
*sigmask = psattr->psa_sigmask;
return 0;
}
int
posix_spawnattr_getbinpref_np(const posix_spawnattr_t * __restrict attr,
size_t count, cpu_type_t *pref, size_t * __restrict ocount)
{
_posix_spawnattr_t psattr;
int i = 0;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
for (i = 0; i < count && i < 4; i++) {
pref[i] = psattr->psa_binprefs[i];
}
if (ocount) {
*ocount = i;
}
return 0;
}
int
posix_spawnattr_getpcontrol_np(const posix_spawnattr_t * __restrict attr,
int * __restrict pcontrol)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
*pcontrol = psattr->psa_pcontrol;
return 0;
}
int
posix_spawnattr_getprocesstype_np(const posix_spawnattr_t * __restrict attr,
int * __restrict proctype)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
*proctype = psattr->psa_apptype;
return 0;
}
int
posix_spawnattr_setsigdefault(posix_spawnattr_t * __restrict attr,
const sigset_t * __restrict sigdefault)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_sigdefault = *sigdefault;
return 0;
}
int
posix_spawnattr_setpgroup(posix_spawnattr_t * attr, pid_t pgroup)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_pgroup = pgroup;
return 0;
}
int
posix_spawnattr_setsigmask(posix_spawnattr_t * __restrict attr,
const sigset_t * __restrict sigmask)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_sigmask = *sigmask;
return 0;
}
int
posix_spawnattr_setbinpref_np(posix_spawnattr_t * __restrict attr,
size_t count, cpu_type_t *pref, size_t * __restrict ocount)
{
_posix_spawnattr_t psattr;
int i = 0;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
for (i = 0; i < count && i < 4; i++) {
psattr->psa_binprefs[i] = pref[i];
}
if (ocount) {
*ocount = i;
}
return 0;
}
int
posix_spawnattr_setpcontrol_np(posix_spawnattr_t * __restrict attr,
const int pcontrol)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_pcontrol = pcontrol;
return 0;
}
int
posix_spawnattr_setprocesstype_np(posix_spawnattr_t * __restrict attr,
const int proctype)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_apptype = proctype;
return 0;
}
static int
posix_spawn_createportactions_np(posix_spawnattr_t *attr)
{
_posix_spawnattr_t psattr;
_posix_spawn_port_actions_t acts;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
acts = (_posix_spawn_port_actions_t)malloc(PS_PORT_ACTIONS_SIZE(2));
if (acts == NULL) {
return ENOMEM;
}
acts->pspa_alloc = 2;
acts->pspa_count = 0;
psattr->psa_ports = acts;
return 0;
}
static int
posix_spawn_growportactions_np(posix_spawnattr_t *attr)
{
_posix_spawnattr_t psattr;
_posix_spawn_port_actions_t acts;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
acts = psattr->psa_ports;
if (acts == NULL) {
return EINVAL;
}
int newnum = 0;
if (os_mul_overflow(acts->pspa_alloc, 2, &newnum)) {
return ENOMEM;
}
size_t newsize = PS_PORT_ACTIONS_SIZE(newnum);
if (newsize == 0) {
return ENOMEM;
}
acts = realloc(acts, newsize);
if (acts == NULL) {
return ENOMEM;
}
acts->pspa_alloc = newnum;
psattr->psa_ports = acts;
return 0;
}
static int
posix_spawn_destroyportactions_np(posix_spawnattr_t *attr)
{
_posix_spawnattr_t psattr;
_posix_spawn_port_actions_t acts;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
acts = psattr->psa_ports;
if (acts == NULL) {
return EINVAL;
}
free(acts);
return 0;
}
static int
posix_spawn_destroycoalition_info_np(posix_spawnattr_t *attr)
{
_posix_spawnattr_t psattr;
struct _posix_spawn_coalition_info *coal_info;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
coal_info = psattr->psa_coalition_info;
if (coal_info == NULL) {
return EINVAL;
}
psattr->psa_coalition_info = NULL;
free(coal_info);
return 0;
}
static int
posix_spawn_destroypersona_info_np(posix_spawnattr_t *attr)
{
_posix_spawnattr_t psattr;
struct _posix_spawn_persona_info *persona;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
persona = psattr->psa_persona_info;
if (persona == NULL) {
return EINVAL;
}
psattr->psa_persona_info = NULL;
free(persona);
return 0;
}
static int
posix_spawn_destroyposix_cred_info_np(posix_spawnattr_t *attr)
{
_posix_spawnattr_t psattr;
struct _posix_spawn_posix_cred_info *pspci;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
pspci = psattr->psa_posix_cred_info;
if (pspci == NULL) {
return EINVAL;
}
psattr->psa_posix_cred_info = NULL;
free(pspci);
return 0;
}
static int
posix_spawn_appendportaction_np(posix_spawnattr_t *attr, _ps_port_action_t *act)
{
_posix_spawnattr_t psattr;
_posix_spawn_port_actions_t acts;
if (attr == NULL || *attr == NULL || act == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
acts = psattr->psa_ports;
if (acts == NULL) {
int err = posix_spawn_createportactions_np(attr);
if (err) {
return err;
}
acts = psattr->psa_ports;
}
if (acts->pspa_alloc == acts->pspa_count) {
int err = posix_spawn_growportactions_np(attr);
if (err) {
return err;
}
acts = psattr->psa_ports;
}
acts->pspa_actions[acts->pspa_count] = *act;
acts->pspa_count++;
return 0;
}
int
posix_spawnattr_setspecialport_np(
posix_spawnattr_t *attr,
mach_port_t new_port,
int which)
{
_ps_port_action_t action = {
.port_type = PSPA_SPECIAL,
.new_port = new_port,
.which = which,
};
return posix_spawn_appendportaction_np(attr, &action);
}
int
posix_spawnattr_setexceptionports_np(
posix_spawnattr_t *attr,
exception_mask_t mask,
mach_port_t new_port,
exception_behavior_t behavior,
thread_state_flavor_t flavor)
{
_ps_port_action_t action = {
.port_type = PSPA_EXCEPTION,
.mask = mask,
.new_port = new_port,
.behavior = behavior,
.flavor = flavor,
};
return posix_spawn_appendportaction_np(attr, &action);
}
int
posix_spawnattr_setauditsessionport_np(
posix_spawnattr_t *attr,
mach_port_t au_sessionport)
{
_ps_port_action_t action = {
.port_type = PSPA_AU_SESSION,
.new_port = au_sessionport,
};
return posix_spawn_appendportaction_np(attr, &action);
}
int
posix_spawn_file_actions_init(posix_spawn_file_actions_t *file_actions)
{
_posix_spawn_file_actions_t *psactsp = (_posix_spawn_file_actions_t *)file_actions;
int err = 0;
if ((*psactsp = (_posix_spawn_file_actions_t)malloc(PSF_ACTIONS_SIZE(PSF_ACTIONS_INIT_COUNT))) == NULL) {
err = ENOMEM;
} else {
(*psactsp)->psfa_act_alloc = PSF_ACTIONS_INIT_COUNT;
(*psactsp)->psfa_act_count = 0;
}
return err;
}
int
posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *file_actions)
{
_posix_spawn_file_actions_t psacts;
if (file_actions == NULL || *file_actions == NULL) {
return EINVAL;
}
psacts = *(_posix_spawn_file_actions_t *)file_actions;
free(psacts);
*file_actions = NULL;
return 0;
}
static int
_posix_spawn_file_actions_grow(_posix_spawn_file_actions_t *psactsp)
{
int newnum = 0;
if (os_mul_overflow((*psactsp)->psfa_act_alloc, 2, &newnum)) {
return ENOMEM;
}
size_t newsize = PSF_ACTIONS_SIZE(newnum);
if (newsize == 0) {
return ENOMEM;
}
_posix_spawn_file_actions_t new_psacts;
if ((new_psacts = (_posix_spawn_file_actions_t)realloc((*psactsp), newsize)) == NULL) {
return ENOMEM;
}
new_psacts->psfa_act_alloc = newnum;
*psactsp = new_psacts;
return 0;
}
int
posix_spawn_file_actions_addopen(
posix_spawn_file_actions_t * __restrict file_actions,
int filedes, const char * __restrict path, int oflag,
mode_t mode)
{
_posix_spawn_file_actions_t *psactsp;
_psfa_action_t *psfileact;
if (file_actions == NULL || *file_actions == NULL) {
return EINVAL;
}
psactsp = (_posix_spawn_file_actions_t *)file_actions;
if (filedes < 0 || filedes >= OPEN_MAX) {
return EBADF;
}
if ((*psactsp)->psfa_act_count == (*psactsp)->psfa_act_alloc) {
if (_posix_spawn_file_actions_grow(psactsp)) {
return ENOMEM;
}
}
psfileact = &(*psactsp)->psfa_act_acts[(*psactsp)->psfa_act_count++];
psfileact->psfaa_type = PSFA_OPEN;
psfileact->psfaa_filedes = filedes;
psfileact->psfaa_openargs.psfao_oflag = oflag;
psfileact->psfaa_openargs.psfao_mode = mode;
strlcpy(psfileact->psfaa_openargs.psfao_path, path, PATH_MAX);
return 0;
}
int
posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *file_actions,
int filedes)
{
_posix_spawn_file_actions_t *psactsp;
_psfa_action_t *psfileact;
if (file_actions == NULL || *file_actions == NULL) {
return EINVAL;
}
psactsp = (_posix_spawn_file_actions_t *)file_actions;
if (filedes < 0 || filedes >= OPEN_MAX) {
return EBADF;
}
if ((*psactsp)->psfa_act_count == (*psactsp)->psfa_act_alloc) {
if (_posix_spawn_file_actions_grow(psactsp)) {
return ENOMEM;
}
}
psfileact = &(*psactsp)->psfa_act_acts[(*psactsp)->psfa_act_count++];
psfileact->psfaa_type = PSFA_CLOSE;
psfileact->psfaa_filedes = filedes;
return 0;
}
int
posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *file_actions,
int filedes, int newfiledes)
{
_posix_spawn_file_actions_t *psactsp;
_psfa_action_t *psfileact;
if (file_actions == NULL || *file_actions == NULL) {
return EINVAL;
}
psactsp = (_posix_spawn_file_actions_t *)file_actions;
if (filedes < 0 || filedes >= OPEN_MAX ||
newfiledes < 0 || newfiledes >= OPEN_MAX) {
return EBADF;
}
if ((*psactsp)->psfa_act_count == (*psactsp)->psfa_act_alloc) {
if (_posix_spawn_file_actions_grow(psactsp)) {
return ENOMEM;
}
}
psfileact = &(*psactsp)->psfa_act_acts[(*psactsp)->psfa_act_count++];
psfileact->psfaa_type = PSFA_DUP2;
psfileact->psfaa_filedes = filedes;
psfileact->psfaa_dup2args.psfad_newfiledes = newfiledes;
return 0;
}
int
posix_spawn_file_actions_add_fileportdup2_np(
posix_spawn_file_actions_t *file_actions,
mach_port_t fileport, int newfiledes)
{
_posix_spawn_file_actions_t *psactsp;
_psfa_action_t *psfileact;
if (file_actions == NULL || *file_actions == NULL) {
return EINVAL;
}
psactsp = (_posix_spawn_file_actions_t *)file_actions;
if (!MACH_PORT_VALID(fileport) ||
newfiledes < 0 || newfiledes >= OPEN_MAX) {
return EBADF;
}
if ((*psactsp)->psfa_act_count == (*psactsp)->psfa_act_alloc) {
if (_posix_spawn_file_actions_grow(psactsp)) {
return ENOMEM;
}
}
psfileact = &(*psactsp)->psfa_act_acts[(*psactsp)->psfa_act_count++];
psfileact->psfaa_type = PSFA_FILEPORT_DUP2;
psfileact->psfaa_fileport = fileport;
psfileact->psfaa_dup2args.psfad_newfiledes = newfiledes;
return 0;
}
int
posix_spawn_file_actions_addinherit_np(posix_spawn_file_actions_t *file_actions,
int filedes)
{
_posix_spawn_file_actions_t *psactsp;
_psfa_action_t *psfileact;
if (file_actions == NULL || *file_actions == NULL) {
return EINVAL;
}
psactsp = (_posix_spawn_file_actions_t *)file_actions;
if (filedes < 0 || filedes >= OPEN_MAX) {
return EBADF;
}
#if defined(POSIX_SPAWN_CLOEXEC_DEFAULT) // TODO: delete this check
if ((*psactsp)->psfa_act_count == (*psactsp)->psfa_act_alloc) {
if (_posix_spawn_file_actions_grow(psactsp)) {
return ENOMEM;
}
}
psfileact = &(*psactsp)->psfa_act_acts[(*psactsp)->psfa_act_count++];
psfileact->psfaa_type = PSFA_INHERIT;
psfileact->psfaa_filedes = filedes;
#endif
return 0;
}
int
posix_spawn_file_actions_addchdir_np(
posix_spawn_file_actions_t * __restrict file_actions,
const char * __restrict path)
{
_posix_spawn_file_actions_t *psactsp;
_psfa_action_t *psfileact;
if (file_actions == NULL || *file_actions == NULL) {
return EINVAL;
}
psactsp = (_posix_spawn_file_actions_t *)file_actions;
if ((*psactsp)->psfa_act_count == (*psactsp)->psfa_act_alloc) {
if (_posix_spawn_file_actions_grow(psactsp)) {
return ENOMEM;
}
}
psfileact = &(*psactsp)->psfa_act_acts[(*psactsp)->psfa_act_count++];
psfileact->psfaa_type = PSFA_CHDIR;
if (strlcpy(psfileact->psfaa_chdirargs.psfac_path, path, PATH_MAX) >= PATH_MAX) {
(*psactsp)->psfa_act_count--;
return ENAMETOOLONG;
}
return 0;
}
int
posix_spawn_file_actions_addfchdir_np(posix_spawn_file_actions_t *file_actions,
int filedes)
{
_posix_spawn_file_actions_t *psactsp;
_psfa_action_t *psfileact;
if (file_actions == NULL || *file_actions == NULL) {
return EINVAL;
}
psactsp = (_posix_spawn_file_actions_t *)file_actions;
if (filedes < 0 || filedes >= OPEN_MAX) {
return EBADF;
}
if ((*psactsp)->psfa_act_count == (*psactsp)->psfa_act_alloc) {
if (_posix_spawn_file_actions_grow(psactsp)) {
return ENOMEM;
}
}
psfileact = &(*psactsp)->psfa_act_acts[(*psactsp)->psfa_act_count++];
psfileact->psfaa_type = PSFA_FCHDIR;
psfileact->psfaa_filedes = filedes;
return 0;
}
int
posix_spawnattr_setcpumonitor_default(posix_spawnattr_t * __restrict attr)
{
return posix_spawnattr_setcpumonitor(attr, PROC_POLICY_CPUMON_DEFAULTS, 0);
}
int
posix_spawnattr_setcpumonitor(posix_spawnattr_t * __restrict attr,
uint64_t percent, uint64_t interval)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_cpumonitor_percent = percent;
psattr->psa_cpumonitor_interval = interval;
return 0;
}
int
posix_spawnattr_getcpumonitor(posix_spawnattr_t * __restrict attr,
uint64_t *percent, uint64_t *interval)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
*percent = psattr->psa_cpumonitor_percent;
*interval = psattr->psa_cpumonitor_interval;
return 0;
}
#if (TARGET_OS_IPHONE && !TARGET_OS_SIMULATOR)
int
posix_spawnattr_setjetsam(posix_spawnattr_t * __restrict attr,
short flags, int priority, int memlimit)
{
short flags_ext = flags;
if (flags & POSIX_SPAWN_JETSAM_MEMLIMIT_FATAL) {
flags_ext |= POSIX_SPAWN_JETSAM_MEMLIMIT_ACTIVE_FATAL;
flags_ext |= POSIX_SPAWN_JETSAM_MEMLIMIT_INACTIVE_FATAL;
} else {
flags_ext &= ~POSIX_SPAWN_JETSAM_MEMLIMIT_ACTIVE_FATAL;
flags_ext &= ~POSIX_SPAWN_JETSAM_MEMLIMIT_INACTIVE_FATAL;
}
return posix_spawnattr_setjetsam_ext(attr, flags_ext, priority, memlimit, memlimit);
}
#endif
int
posix_spawnattr_setjetsam_ext(posix_spawnattr_t * __restrict attr,
short flags, int priority, int memlimit_active, int memlimit_inactive)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_jetsam_flags = flags;
psattr->psa_jetsam_flags |= POSIX_SPAWN_JETSAM_SET;
psattr->psa_priority = priority;
psattr->psa_memlimit_active = memlimit_active;
psattr->psa_memlimit_inactive = memlimit_inactive;
return 0;
}
int
posix_spawnattr_set_threadlimit_ext(posix_spawnattr_t * __restrict attr,
int thread_limit)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_thread_limit = thread_limit;
return 0;
}
int
posix_spawnattr_set_importancewatch_port_np(posix_spawnattr_t * __restrict attr,
int count, mach_port_t portarray[])
{
int err = 0, i;
if (count < 0 || count > POSIX_SPAWN_IMPORTANCE_PORT_COUNT) {
return EINVAL;
}
for (i = 0; i < count; i++) {
_ps_port_action_t action = {
.port_type = PSPA_IMP_WATCHPORTS,
.new_port = portarray[i],
};
err = posix_spawn_appendportaction_np(attr, &action);
if (err) {
break;
}
}
return err;
}
int
posix_spawnattr_set_registered_ports_np(posix_spawnattr_t * __restrict attr,
mach_port_t portarray[], uint32_t count)
{
int err = 0;
if (count > TASK_PORT_REGISTER_MAX) {
return EINVAL;
}
for (uint32_t i = 0; i < count; i++) {
_ps_port_action_t action = {
.port_type = PSPA_REGISTERED_PORTS,
.new_port = portarray[i],
};
err = posix_spawn_appendportaction_np(attr, &action);
if (err) {
break;
}
}
return err;
}
static
_ps_mac_policy_extension_t *
posix_spawnattr_macpolicyinfo_lookup(_posix_spawn_mac_policy_extensions_t psmx, const char *policyname)
{
int i;
if (psmx == NULL) {
return NULL;
}
for (i = 0; i < psmx->psmx_count; i++) {
_ps_mac_policy_extension_t *extension = &psmx->psmx_extensions[i];
if (strcmp(extension->policyname, policyname) == 0) {
return extension;
}
}
return NULL;
}
int
posix_spawnattr_getmacpolicyinfo_np(const posix_spawnattr_t * __restrict attr,
const char *policyname, void **datap, size_t *datalenp)
{
_posix_spawnattr_t psattr;
_ps_mac_policy_extension_t *extension;
if (attr == NULL || *attr == NULL || policyname == NULL || datap == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
extension = posix_spawnattr_macpolicyinfo_lookup(psattr->psa_mac_extensions, policyname);
if (extension == NULL) {
return ESRCH;
}
*datap = (void *)(uintptr_t)extension->data;
if (datalenp != NULL) {
*datalenp = (size_t)extension->datalen;
}
return 0;
}
int
posix_spawnattr_setmacpolicyinfo_np(posix_spawnattr_t * __restrict attr,
const char *policyname, void *data, size_t datalen)
{
_posix_spawnattr_t psattr;
_posix_spawn_mac_policy_extensions_t psmx;
_ps_mac_policy_extension_t *extension;
if (attr == NULL || *attr == NULL || policyname == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psmx = psattr->psa_mac_extensions;
extension = posix_spawnattr_macpolicyinfo_lookup(psattr->psa_mac_extensions, policyname);
if (extension != NULL) {
extension->data = (uintptr_t)data;
extension->datalen = datalen;
return 0;
} else if (psmx == NULL) {
psmx = psattr->psa_mac_extensions = malloc(PS_MAC_EXTENSIONS_SIZE(PS_MAC_EXTENSIONS_INIT_COUNT));
if (psmx == NULL) {
return ENOMEM;
}
psmx->psmx_alloc = PS_MAC_EXTENSIONS_INIT_COUNT;
psmx->psmx_count = 0;
} else if (psmx->psmx_count == psmx->psmx_alloc) {
int newnum = 0;
if (os_mul_overflow(psmx->psmx_alloc, 2, &newnum)) {
return ENOMEM;
}
size_t extsize = PS_MAC_EXTENSIONS_SIZE(newnum);
if (extsize == 0) {
return ENOMEM;
}
psmx = psattr->psa_mac_extensions = reallocf(psmx, extsize);
if (psmx == NULL) {
return ENOMEM;
}
psmx->psmx_alloc = newnum;
}
extension = &psmx->psmx_extensions[psmx->psmx_count];
strlcpy(extension->policyname, policyname, sizeof(extension->policyname));
extension->data = (uintptr_t)data;
extension->datalen = datalen;
psmx->psmx_count += 1;
return 0;
}
static int
posix_spawn_destroymacpolicy_info_np(posix_spawnattr_t *attr)
{
_posix_spawnattr_t psattr;
_posix_spawn_mac_policy_extensions_t psmx;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psmx = psattr->psa_mac_extensions;
if (psmx == NULL) {
return EINVAL;
}
psattr->psa_mac_extensions = NULL;
free(psmx);
return 0;
}
int
posix_spawnattr_setcoalition_np(const posix_spawnattr_t * __restrict attr,
uint64_t coalitionid, int type, int role)
{
_posix_spawnattr_t psattr;
struct _posix_spawn_coalition_info *coal_info;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
if (type < 0 || type > COALITION_TYPE_MAX) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
coal_info = psattr->psa_coalition_info;
if (!coal_info) {
coal_info = (struct _posix_spawn_coalition_info *)malloc(sizeof(*coal_info));
if (!coal_info) {
return ENOMEM;
}
memset(coal_info, 0, sizeof(*coal_info));
psattr->psa_coalition_info = coal_info;
}
coal_info->psci_info[type].psci_id = coalitionid;
coal_info->psci_info[type].psci_role = role;
return 0;
}
int
posix_spawnattr_set_qos_clamp_np(const posix_spawnattr_t * __restrict attr, uint64_t qos_clamp)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
if (qos_clamp >= POSIX_SPAWN_PROC_CLAMP_LAST) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_qos_clamp = qos_clamp;
return 0;
}
int
posix_spawnattr_get_qos_clamp_np(const posix_spawnattr_t * __restrict attr, uint64_t * __restrict qos_clampp)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
*qos_clampp = psattr->psa_qos_clamp;
return 0;
}
int
posix_spawnattr_set_darwin_role_np(const posix_spawnattr_t * __restrict attr, uint64_t darwin_role)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_darwin_role = darwin_role;
return 0;
}
int
posix_spawnattr_get_darwin_role_np(const posix_spawnattr_t * __restrict attr, uint64_t * __restrict darwin_rolep)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
*darwin_rolep = psattr->psa_darwin_role;
return 0;
}
int
posix_spawnattr_set_persona_np(const posix_spawnattr_t * __restrict attr, uid_t persona_id, uint32_t flags)
{
_posix_spawnattr_t psattr;
struct _posix_spawn_persona_info *persona;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
if (flags & ~POSIX_SPAWN_PERSONA_ALL_FLAGS) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
persona = psattr->psa_persona_info;
if (!persona) {
persona = (struct _posix_spawn_persona_info *)malloc(sizeof(*persona));
if (!persona) {
return ENOMEM;
}
persona->pspi_uid = 0;
persona->pspi_gid = 0;
persona->pspi_ngroups = 0;
persona->pspi_groups[0] = 0;
persona->pspi_gmuid = 0;
psattr->psa_persona_info = persona;
}
persona->pspi_id = persona_id;
persona->pspi_flags = flags;
return 0;
}
int
posix_spawnattr_set_persona_uid_np(const posix_spawnattr_t * __restrict attr, uid_t uid)
{
_posix_spawnattr_t psattr;
struct _posix_spawn_persona_info *persona;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
persona = psattr->psa_persona_info;
if (!persona) {
return EINVAL;
}
if (!(persona->pspi_flags & (POSIX_SPAWN_PERSONA_FLAGS_OVERRIDE | POSIX_SPAWN_PERSONA_FLAGS_VERIFY))) {
return EINVAL;
}
persona->pspi_uid = uid;
persona->pspi_flags |= POSIX_SPAWN_PERSONA_UID;
return 0;
}
int
posix_spawnattr_set_persona_gid_np(const posix_spawnattr_t * __restrict attr, gid_t gid)
{
_posix_spawnattr_t psattr;
struct _posix_spawn_persona_info *persona;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
persona = psattr->psa_persona_info;
if (!persona) {
return EINVAL;
}
if (!(persona->pspi_flags & (POSIX_SPAWN_PERSONA_FLAGS_OVERRIDE | POSIX_SPAWN_PERSONA_FLAGS_VERIFY))) {
return EINVAL;
}
persona->pspi_gid = gid;
persona->pspi_flags |= POSIX_SPAWN_PERSONA_GID;
return 0;
}
int
posix_spawnattr_set_persona_groups_np(const posix_spawnattr_t * __restrict attr, int ngroups, gid_t *gidarray, uid_t gmuid)
{
_posix_spawnattr_t psattr;
struct _posix_spawn_persona_info *persona;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
if (gidarray == NULL) {
return EINVAL;
}
if (ngroups > NGROUPS || ngroups < 0) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
persona = psattr->psa_persona_info;
if (!persona) {
return EINVAL;
}
if (!(persona->pspi_flags & (POSIX_SPAWN_PERSONA_FLAGS_OVERRIDE | POSIX_SPAWN_PERSONA_FLAGS_VERIFY))) {
return EINVAL;
}
persona->pspi_ngroups = ngroups;
for (int i = 0; i < ngroups; i++) {
persona->pspi_groups[i] = gidarray[i];
}
persona->pspi_gmuid = gmuid;
persona->pspi_flags |= POSIX_SPAWN_PERSONA_GROUPS;
return 0;
}
int
posix_spawnattr_set_max_addr_np(const posix_spawnattr_t * __restrict attr, uint64_t max_addr)
{
_posix_spawnattr_t psattr;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
psattr->psa_max_addr = max_addr;
return 0;
}
static struct _posix_spawn_posix_cred_info *
_posix_spawnattr_get_posix_creds_info(_posix_spawnattr_t psattr)
{
struct _posix_spawn_posix_cred_info *pspci = psattr->psa_posix_cred_info;
if (pspci == NULL) {
pspci = malloc(sizeof(struct _posix_spawn_posix_cred_info));
if (pspci != NULL) {
pspci->pspci_flags = 0;
pspci->pspci_uid = 0;
pspci->pspci_gid = 0;
pspci->pspci_ngroups = 0;
pspci->pspci_groups[0] = 0;
pspci->pspci_gmuid = 0;
pspci->pspci_login[0] = '\0';
psattr->psa_posix_cred_info = pspci;
}
}
return pspci;
}
int
posix_spawnattr_set_uid_np(const posix_spawnattr_t *attr, uid_t uid)
{
struct _posix_spawn_posix_cred_info *pspci;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
pspci = _posix_spawnattr_get_posix_creds_info(*(_posix_spawnattr_t *)attr);
if (pspci == NULL) {
return ENOMEM;
}
pspci->pspci_uid = uid;
pspci->pspci_flags |= POSIX_SPAWN_POSIX_CRED_UID;
return 0;
}
int
posix_spawnattr_set_gid_np(const posix_spawnattr_t *attr, gid_t gid)
{
struct _posix_spawn_posix_cred_info *pspci;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
pspci = _posix_spawnattr_get_posix_creds_info(*(_posix_spawnattr_t *)attr);
if (pspci == NULL) {
return ENOMEM;
}
pspci->pspci_gid = gid;
pspci->pspci_flags |= POSIX_SPAWN_POSIX_CRED_GID;
return 0;
}
int
posix_spawnattr_set_groups_np(const posix_spawnattr_t *attr,
int ngroups, gid_t *gidarray, uid_t gmuid)
{
struct _posix_spawn_posix_cred_info *pspci;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
if (gidarray == NULL) {
return EINVAL;
}
if (ngroups > NGROUPS || ngroups < 0) {
return EINVAL;
}
pspci = _posix_spawnattr_get_posix_creds_info(*(_posix_spawnattr_t *)attr);
if (pspci == NULL) {
return ENOMEM;
}
pspci->pspci_ngroups = ngroups;
for (int i = 0; i < ngroups; i++) {
pspci->pspci_groups[i] = gidarray[i];
}
pspci->pspci_gmuid = gmuid;
pspci->pspci_flags |= POSIX_SPAWN_POSIX_CRED_GROUPS;
return 0;
}
int
posix_spawnattr_set_login_np(const posix_spawnattr_t *attr, const char *login)
{
struct _posix_spawn_posix_cred_info *pspci;
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
if (strlen(login) > MAXLOGNAME) {
return ERANGE;
}
pspci = _posix_spawnattr_get_posix_creds_info(*(_posix_spawnattr_t *)attr);
if (pspci == NULL) {
return ENOMEM;
}
strlcpy(pspci->pspci_login, login, sizeof(pspci->pspci_login));
pspci->pspci_flags |= POSIX_SPAWN_POSIX_CRED_LOGIN;
return 0;
}
int
posix_spawnattr_set_jetsam_ttr_np(const posix_spawnattr_t * __restrict attr, uint32_t count, uint32_t *ttrs_millis)
{
_posix_spawnattr_t psattr;
static const uint32_t relaunch_buckets_msecs[POSIX_SPAWN_JETSAM_RELAUNCH_BEHAVIOR_BUCKETS] = {
5000,
10000,
UINT32_MAX
};
static const uint32_t relaunch_jetsam_flags[POSIX_SPAWN_JETSAM_RELAUNCH_BEHAVIOR_BUCKETS] = {
POSIX_SPAWN_JETSAM_RELAUNCH_BEHAVIOR_HIGH,
POSIX_SPAWN_JETSAM_RELAUNCH_BEHAVIOR_MED,
POSIX_SPAWN_JETSAM_RELAUNCH_BEHAVIOR_LOW
};
if (attr == NULL || *attr == NULL) {
return EINVAL;
}
if (count == 0) {
return EINVAL;
}
psattr = *(_posix_spawnattr_t *)attr;
int relaunch_histogram[POSIX_SPAWN_JETSAM_RELAUNCH_BEHAVIOR_BUCKETS] = {0};
int max_frequency = -1;
int highest_frequency_bucket = -1;
for (uint32_t i = 0; i < count; i++) {
for (uint32_t bucket = 0; bucket < POSIX_SPAWN_JETSAM_RELAUNCH_BEHAVIOR_BUCKETS; bucket++) {
if (ttrs_millis[i] <= relaunch_buckets_msecs[bucket]) {
relaunch_histogram[bucket]++;
if (relaunch_histogram[bucket] > max_frequency) {
max_frequency = relaunch_histogram[bucket];
highest_frequency_bucket = bucket;
}
break;
}
}
}
psattr->psa_jetsam_flags |= relaunch_jetsam_flags[highest_frequency_bucket];
return 0;
}
extern int __posix_spawn(pid_t * __restrict, const char * __restrict,
struct _posix_spawn_args_desc *,
char *const argv[__restrict], char *const envp[__restrict]);
int
posix_spawn(pid_t * __restrict pid, const char * __restrict path,
const posix_spawn_file_actions_t *file_actions,
const posix_spawnattr_t * __restrict attrp,
char *const argv[__restrict], char *const envp[__restrict])
{
int saveerrno = errno;
int ret;
if ((file_actions != NULL && (*file_actions != NULL) && (*(_posix_spawn_file_actions_t *)file_actions)->psfa_act_count > 0) || attrp != NULL) {
struct _posix_spawn_args_desc ad;
memset(&ad, 0, sizeof(ad));
if (attrp != NULL && *attrp != NULL) {
_posix_spawnattr_t psattr = *(_posix_spawnattr_t *)attrp;
ad.attr_size = sizeof(struct _posix_spawnattr);
ad.attrp = psattr;
if (psattr->psa_ports != NULL) {
size_t psact_size = PS_PORT_ACTIONS_SIZE(psattr->psa_ports->pspa_count);
if (psact_size == 0 && psattr->psa_ports->pspa_count != 0) {
errno = EINVAL;
ret = -1;
goto out;
}
ad.port_actions = psattr->psa_ports;
ad.port_actions_size = psact_size;
}
if (psattr->psa_mac_extensions != NULL) {
size_t macext_size = PS_MAC_EXTENSIONS_SIZE(psattr->psa_mac_extensions->psmx_count);
if (macext_size == 0 && psattr->psa_mac_extensions->psmx_count != 0) {
errno = EINVAL;
ret = -1;
goto out;
}
ad.mac_extensions = psattr->psa_mac_extensions;
ad.mac_extensions_size = macext_size;
}
if (psattr->psa_coalition_info != NULL) {
ad.coal_info_size = sizeof(struct _posix_spawn_coalition_info);
ad.coal_info = psattr->psa_coalition_info;
}
if (psattr->psa_persona_info != NULL) {
ad.persona_info_size = sizeof(struct _posix_spawn_persona_info);
ad.persona_info = psattr->psa_persona_info;
}
if (psattr->psa_posix_cred_info != NULL) {
ad.posix_cred_info_size = sizeof(struct _posix_spawn_posix_cred_info);
ad.posix_cred_info = psattr->psa_posix_cred_info;
}
}
if (file_actions != NULL && *file_actions != NULL) {
_posix_spawn_file_actions_t psactsp =
*(_posix_spawn_file_actions_t *)file_actions;
if (psactsp->psfa_act_count > 0) {
size_t fa_size = PSF_ACTIONS_SIZE(psactsp->psfa_act_count);
if (fa_size == 0 && psactsp->psfa_act_count != 0) {
errno = EINVAL;
ret = -1;
goto out;
}
ad.file_actions_size = fa_size;
ad.file_actions = psactsp;
}
}
ret = __posix_spawn(pid, path, &ad, argv, envp);
} else {
ret = __posix_spawn(pid, path, NULL, argv, envp);
}
out:
if (ret < 0) {
ret = errno;
}
errno = saveerrno;
return ret;
}