/*
* code for returning process's command line arguments
*/
int
procfs_docmdline(
struct lwp *curl,
struct proc *p,
struct pfsnode *pfs,
struct uio *uio
)
{
size_t len, start;
int error;
/* Don't allow writing. */
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
/*
* Zombies don't have a stack, so we can't read their psstrings.
* System processes also don't have a user stack. This is what
* ps(1) would display.
*/
if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) {
static char msg[] = "()";
error = 0;
if (0 == uio->uio_offset) {
error = uiomove(msg, 1, uio);
if (error)
return (error);
}
len = strlen(p->p_comm);
if (len >= uio->uio_offset) {
start = uio->uio_offset - 1;
error = uiomove(p->p_comm + start, len - start, uio);
if (error)
return (error);
}
if (len + 2 >= uio->uio_offset) {
start = uio->uio_offset - 1 - len;
error = uiomove(msg + 1 + start, 2 - start, uio);
}
return (error);
}
len = uio->uio_offset + uio->uio_resid;
error = copy_procargs(p, KERN_PROC_ARGV, &len,
procfs_docmdline_helper, uio);
return error;
}
void
db_proc_cmd(db_expr_t addr, bool have_addr, db_expr_t count, const char *modif)
{
struct lwp *l;
struct proc *p;
l = curlwp;
if (have_addr)
l = (struct lwp *) addr;
if (l == NULL) {
db_printf("no current process\n");
return;
}
p = l->l_proc;
db_printf("LWP %p: ", l);
db_printf("PID:%d.%d CPU:%d stat:%d vmspace:%p", p->p_pid,
l->l_lid, l->l_cpu->ci_cpuid, l->l_stat, p->p_vmspace);
if (!P_ZOMBIE(p))
db_printf(" ctx: %p cpuset %x",
p->p_vmspace->vm_map.pmap->pm_ctx,
p->p_vmspace->vm_map.pmap->pm_cpuset);
db_printf("\npmap:%p wchan:%p pri:%d epri:%d\n",
p->p_vmspace->vm_map.pmap,
l->l_wchan, l->l_priority, lwp_eprio(l));
db_printf("maxsaddr:%p ssiz:%d pg or %llxB\n",
p->p_vmspace->vm_maxsaddr, p->p_vmspace->vm_ssize,
(unsigned long long)ctob(p->p_vmspace->vm_ssize));
db_printf("profile timer: %lld sec %ld nsec\n",
p->p_stats->p_timer[ITIMER_PROF].it_value.tv_sec,
p->p_stats->p_timer[ITIMER_PROF].it_value.tv_nsec);
db_printf("pcb: %p\n", lwp_getpcb(l));
return;
}
struct kinfo_proc2 *
kvm_getproc2(kvm_t *kd, int op, int arg, size_t esize, int *cnt)
{
size_t size;
int mib[6], st, nprocs;
struct pstats pstats;
if (ISSYSCTL(kd)) {
size = 0;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC2;
mib[2] = op;
mib[3] = arg;
mib[4] = (int)esize;
again:
mib[5] = 0;
st = sysctl(mib, 6, NULL, &size, NULL, (size_t)0);
if (st == -1) {
_kvm_syserr(kd, kd->program, "kvm_getproc2");
return (NULL);
}
mib[5] = (int) (size / esize);
KVM_ALLOC(kd, procbase2, size);
st = sysctl(mib, 6, kd->procbase2, &size, NULL, (size_t)0);
if (st == -1) {
if (errno == ENOMEM) {
goto again;
}
_kvm_syserr(kd, kd->program, "kvm_getproc2");
return (NULL);
}
nprocs = (int) (size / esize);
} else {
char *kp2c;
struct kinfo_proc *kp;
struct kinfo_proc2 kp2, *kp2p;
struct kinfo_lwp *kl;
int i, nlwps;
kp = kvm_getprocs(kd, op, arg, &nprocs);
if (kp == NULL)
return (NULL);
size = nprocs * esize;
KVM_ALLOC(kd, procbase2, size);
kp2c = (char *)(void *)kd->procbase2;
kp2p = &kp2;
for (i = 0; i < nprocs; i++, kp++) {
struct timeval tv;
kl = kvm_getlwps(kd, kp->kp_proc.p_pid,
(u_long)PTRTOUINT64(kp->kp_eproc.e_paddr),
sizeof(struct kinfo_lwp), &nlwps);
if (kl == NULL) {
_kvm_syserr(kd, NULL,
"kvm_getlwps() failed on process %u\n",
kp->kp_proc.p_pid);
if (nlwps == 0)
return NULL;
else
continue;
}
/* We use kl[0] as the "representative" LWP */
memset(kp2p, 0, sizeof(kp2));
kp2p->p_forw = kl[0].l_forw;
kp2p->p_back = kl[0].l_back;
kp2p->p_paddr = PTRTOUINT64(kp->kp_eproc.e_paddr);
kp2p->p_addr = kl[0].l_addr;
kp2p->p_fd = PTRTOUINT64(kp->kp_proc.p_fd);
kp2p->p_cwdi = PTRTOUINT64(kp->kp_proc.p_cwdi);
kp2p->p_stats = PTRTOUINT64(kp->kp_proc.p_stats);
kp2p->p_limit = PTRTOUINT64(kp->kp_proc.p_limit);
kp2p->p_vmspace = PTRTOUINT64(kp->kp_proc.p_vmspace);
kp2p->p_sigacts = PTRTOUINT64(kp->kp_proc.p_sigacts);
kp2p->p_sess = PTRTOUINT64(kp->kp_eproc.e_sess);
kp2p->p_tsess = 0;
#if 1 /* XXX: dsl - p_ru was only ever non-zero for zombies */
kp2p->p_ru = 0;
#else
kp2p->p_ru = PTRTOUINT64(pstats.p_ru);
#endif
kp2p->p_eflag = 0;
kp2p->p_exitsig = kp->kp_proc.p_exitsig;
kp2p->p_flag = kp->kp_proc.p_flag;
kp2p->p_pid = kp->kp_proc.p_pid;
kp2p->p_ppid = kp->kp_eproc.e_ppid;
kp2p->p_sid = kp->kp_eproc.e_sid;
kp2p->p__pgid = kp->kp_eproc.e_pgid;
kp2p->p_tpgid = -1 /* XXX NO_PGID! */;
kp2p->p_uid = kp->kp_eproc.e_ucred.cr_uid;
kp2p->p_ruid = kp->kp_eproc.e_pcred.p_ruid;
kp2p->p_svuid = kp->kp_eproc.e_pcred.p_svuid;
kp2p->p_gid = kp->kp_eproc.e_ucred.cr_gid;
kp2p->p_rgid = kp->kp_eproc.e_pcred.p_rgid;
kp2p->p_svgid = kp->kp_eproc.e_pcred.p_svgid;
/*CONSTCOND*/
memcpy(kp2p->p_groups, kp->kp_eproc.e_ucred.cr_groups,
MIN(sizeof(kp2p->p_groups),
sizeof(kp->kp_eproc.e_ucred.cr_groups)));
kp2p->p_ngroups = kp->kp_eproc.e_ucred.cr_ngroups;
kp2p->p_jobc = kp->kp_eproc.e_jobc;
kp2p->p_tdev = kp->kp_eproc.e_tdev;
kp2p->p_tpgid = kp->kp_eproc.e_tpgid;
kp2p->p_tsess = PTRTOUINT64(kp->kp_eproc.e_tsess);
kp2p->p_estcpu = 0;
bintime2timeval(&kp->kp_proc.p_rtime, &tv);
kp2p->p_rtime_sec = (uint32_t)tv.tv_sec;
kp2p->p_rtime_usec = (uint32_t)tv.tv_usec;
kp2p->p_cpticks = kl[0].l_cpticks;
kp2p->p_pctcpu = kp->kp_proc.p_pctcpu;
kp2p->p_swtime = kl[0].l_swtime;
kp2p->p_slptime = kl[0].l_slptime;
#if 0 /* XXX thorpej */
kp2p->p_schedflags = kp->kp_proc.p_schedflags;
#else
kp2p->p_schedflags = 0;
#endif
kp2p->p_uticks = kp->kp_proc.p_uticks;
kp2p->p_sticks = kp->kp_proc.p_sticks;
kp2p->p_iticks = kp->kp_proc.p_iticks;
kp2p->p_tracep = PTRTOUINT64(kp->kp_proc.p_tracep);
kp2p->p_traceflag = kp->kp_proc.p_traceflag;
kp2p->p_holdcnt = kl[0].l_holdcnt;
memcpy(&kp2p->p_siglist,
&kp->kp_proc.p_sigpend.sp_set,
sizeof(ki_sigset_t));
memset(&kp2p->p_sigmask, 0,
sizeof(ki_sigset_t));
memcpy(&kp2p->p_sigignore,
&kp->kp_proc.p_sigctx.ps_sigignore,
sizeof(ki_sigset_t));
memcpy(&kp2p->p_sigcatch,
&kp->kp_proc.p_sigctx.ps_sigcatch,
sizeof(ki_sigset_t));
kp2p->p_stat = kl[0].l_stat;
kp2p->p_priority = kl[0].l_priority;
kp2p->p_usrpri = kl[0].l_priority;
kp2p->p_nice = kp->kp_proc.p_nice;
kp2p->p_xstat = kp->kp_proc.p_xstat;
kp2p->p_acflag = kp->kp_proc.p_acflag;
/*CONSTCOND*/
strncpy(kp2p->p_comm, kp->kp_proc.p_comm,
MIN(sizeof(kp2p->p_comm),
sizeof(kp->kp_proc.p_comm)));
strncpy(kp2p->p_wmesg, kp->kp_eproc.e_wmesg,
sizeof(kp2p->p_wmesg));
kp2p->p_wchan = kl[0].l_wchan;
strncpy(kp2p->p_login, kp->kp_eproc.e_login,
sizeof(kp2p->p_login));
kp2p->p_vm_rssize = kp->kp_eproc.e_xrssize;
kp2p->p_vm_tsize = kp->kp_eproc.e_vm.vm_tsize;
kp2p->p_vm_dsize = kp->kp_eproc.e_vm.vm_dsize;
kp2p->p_vm_ssize = kp->kp_eproc.e_vm.vm_ssize;
kp2p->p_vm_vsize = kp->kp_eproc.e_vm.vm_map.size
/ kd->nbpg;
/* Adjust mapped size */
kp2p->p_vm_msize =
(kp->kp_eproc.e_vm.vm_map.size / kd->nbpg) -
kp->kp_eproc.e_vm.vm_issize +
kp->kp_eproc.e_vm.vm_ssize;
kp2p->p_eflag = (int32_t)kp->kp_eproc.e_flag;
kp2p->p_realflag = kp->kp_proc.p_flag;
kp2p->p_nlwps = kp->kp_proc.p_nlwps;
kp2p->p_nrlwps = kp->kp_proc.p_nrlwps;
kp2p->p_realstat = kp->kp_proc.p_stat;
if (P_ZOMBIE(&kp->kp_proc) ||
kp->kp_proc.p_stats == NULL ||
KREAD(kd, (u_long)kp->kp_proc.p_stats, &pstats)) {
kp2p->p_uvalid = 0;
} else {
kp2p->p_uvalid = 1;
kp2p->p_ustart_sec = (u_int32_t)
pstats.p_start.tv_sec;
kp2p->p_ustart_usec = (u_int32_t)
pstats.p_start.tv_usec;
kp2p->p_uutime_sec = (u_int32_t)
pstats.p_ru.ru_utime.tv_sec;
kp2p->p_uutime_usec = (u_int32_t)
pstats.p_ru.ru_utime.tv_usec;
kp2p->p_ustime_sec = (u_int32_t)
pstats.p_ru.ru_stime.tv_sec;
kp2p->p_ustime_usec = (u_int32_t)
pstats.p_ru.ru_stime.tv_usec;
kp2p->p_uru_maxrss = pstats.p_ru.ru_maxrss;
kp2p->p_uru_ixrss = pstats.p_ru.ru_ixrss;
kp2p->p_uru_idrss = pstats.p_ru.ru_idrss;
kp2p->p_uru_isrss = pstats.p_ru.ru_isrss;
kp2p->p_uru_minflt = pstats.p_ru.ru_minflt;
kp2p->p_uru_majflt = pstats.p_ru.ru_majflt;
kp2p->p_uru_nswap = pstats.p_ru.ru_nswap;
kp2p->p_uru_inblock = pstats.p_ru.ru_inblock;
kp2p->p_uru_oublock = pstats.p_ru.ru_oublock;
kp2p->p_uru_msgsnd = pstats.p_ru.ru_msgsnd;
kp2p->p_uru_msgrcv = pstats.p_ru.ru_msgrcv;
kp2p->p_uru_nsignals = pstats.p_ru.ru_nsignals;
kp2p->p_uru_nvcsw = pstats.p_ru.ru_nvcsw;
kp2p->p_uru_nivcsw = pstats.p_ru.ru_nivcsw;
kp2p->p_uctime_sec = (u_int32_t)
(pstats.p_cru.ru_utime.tv_sec +
pstats.p_cru.ru_stime.tv_sec);
kp2p->p_uctime_usec = (u_int32_t)
(pstats.p_cru.ru_utime.tv_usec +
pstats.p_cru.ru_stime.tv_usec);
}
memcpy(kp2c, &kp2, esize);
kp2c += esize;
}
}
*cnt = nprocs;
return (kd->procbase2);
}
struct kinfo_proc2 *
kvm_getproc2(kvm_t *kd, int op, int arg, size_t esize, int *cnt)
{
int mib[6], st, nprocs;
struct user user;
size_t size;
if ((ssize_t)esize < 0)
return (NULL);
if (kd->procbase2 != NULL) {
free(kd->procbase2);
/*
* Clear this pointer in case this call fails. Otherwise,
* kvm_close() will free it again.
*/
kd->procbase2 = 0;
}
if (ISALIVE(kd)) {
size = 0;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC2;
mib[2] = op;
mib[3] = arg;
mib[4] = esize;
mib[5] = 0;
st = sysctl(mib, 6, NULL, &size, NULL, 0);
if (st == -1) {
_kvm_syserr(kd, kd->program, "kvm_getproc2");
return (NULL);
}
mib[5] = size / esize;
kd->procbase2 = _kvm_malloc(kd, size);
if (kd->procbase2 == 0)
return (NULL);
st = sysctl(mib, 6, kd->procbase2, &size, NULL, 0);
if (st == -1) {
_kvm_syserr(kd, kd->program, "kvm_getproc2");
return (NULL);
}
nprocs = size / esize;
} else {
struct kinfo_proc2 kp2, *kp2p;
struct kinfo_proc *kp;
char *kp2c;
int i;
kp = kvm_getprocs(kd, op, arg, &nprocs);
if (kp == NULL)
return (NULL);
kd->procbase2 = _kvm_malloc(kd, nprocs * esize);
kp2c = (char *)kd->procbase2;
kp2p = &kp2;
for (i = 0; i < nprocs; i++, kp++) {
memset(kp2p, 0, sizeof(kp2));
kp2p->p_paddr = PTRTOINT64(kp->kp_eproc.e_paddr);
kp2p->p_addr = PTRTOINT64(kp->kp_proc.p_addr);
kp2p->p_fd = PTRTOINT64(kp->kp_proc.p_fd);
kp2p->p_stats = PTRTOINT64(kp->kp_proc.p_stats);
kp2p->p_limit = PTRTOINT64(kp->kp_eproc.e_limit);
kp2p->p_vmspace = PTRTOINT64(kp->kp_proc.p_vmspace);
kp2p->p_sigacts = PTRTOINT64(kp->kp_proc.p_sigacts);
kp2p->p_sess = PTRTOINT64(kp->kp_eproc.e_sess);
kp2p->p_tsess = 0;
kp2p->p_ru = PTRTOINT64(kp->kp_proc.p_ru);
kp2p->p_eflag = 0;
kp2p->p_exitsig = kp->kp_proc.p_exitsig;
kp2p->p_flag = kp->kp_proc.p_flag;
kp2p->p_pid = kp->kp_proc.p_pid;
kp2p->p_ppid = kp->kp_eproc.e_ppid;
#if 0
kp2p->p_sid = kp->kp_eproc.e_sid;
#else
kp2p->p_sid = -1; /* XXX */
#endif
kp2p->p__pgid = kp->kp_eproc.e_pgid;
kp2p->p_tpgid = -1;
kp2p->p_uid = kp->kp_eproc.e_ucred.cr_uid;
kp2p->p_ruid = kp->kp_eproc.e_pcred.p_ruid;
kp2p->p_gid = kp->kp_eproc.e_ucred.cr_gid;
kp2p->p_rgid = kp->kp_eproc.e_pcred.p_rgid;
memcpy(kp2p->p_groups, kp->kp_eproc.e_ucred.cr_groups,
MIN(sizeof(kp2p->p_groups),
sizeof(kp->kp_eproc.e_ucred.cr_groups)));
kp2p->p_ngroups = kp->kp_eproc.e_ucred.cr_ngroups;
kp2p->p_jobc = kp->kp_eproc.e_jobc;
kp2p->p_tdev = kp->kp_eproc.e_tdev;
kp2p->p_tpgid = kp->kp_eproc.e_tpgid;
kp2p->p_tsess = PTRTOINT64(kp->kp_eproc.e_tsess);
kp2p->p_estcpu = kp->kp_proc.p_estcpu;
kp2p->p_rtime_sec = kp->kp_proc.p_estcpu;
kp2p->p_rtime_usec = kp->kp_proc.p_estcpu;
kp2p->p_cpticks = kp->kp_proc.p_cpticks;
kp2p->p_pctcpu = kp->kp_proc.p_pctcpu;
kp2p->p_swtime = kp->kp_proc.p_swtime;
kp2p->p_slptime = kp->kp_proc.p_slptime;
kp2p->p_schedflags = 0;
kp2p->p_uticks = kp->kp_proc.p_uticks;
kp2p->p_sticks = kp->kp_proc.p_sticks;
kp2p->p_iticks = kp->kp_proc.p_iticks;
kp2p->p_tracep = PTRTOINT64(kp->kp_proc.p_tracep);
kp2p->p_traceflag = kp->kp_proc.p_traceflag;
kp2p->p_holdcnt = 1;
kp2p->p_siglist = kp->kp_proc.p_siglist;
kp2p->p_sigmask = kp->kp_proc.p_sigmask;
kp2p->p_sigignore = kp->kp_proc.p_sigignore;
kp2p->p_sigcatch = kp->kp_proc.p_sigcatch;
kp2p->p_stat = kp->kp_proc.p_stat;
kp2p->p_priority = kp->kp_proc.p_priority;
kp2p->p_usrpri = kp->kp_proc.p_usrpri;
kp2p->p_nice = kp->kp_proc.p_nice;
kp2p->p_xstat = kp->kp_proc.p_xstat;
kp2p->p_acflag = kp->kp_proc.p_acflag;
strncpy(kp2p->p_comm, kp->kp_proc.p_comm,
MIN(sizeof(kp2p->p_comm), sizeof(kp->kp_proc.p_comm)));
strncpy(kp2p->p_wmesg, kp->kp_eproc.e_wmesg,
sizeof(kp2p->p_wmesg));
kp2p->p_wchan = PTRTOINT64(kp->kp_proc.p_wchan);
strncpy(kp2p->p_login, kp->kp_eproc.e_login,
sizeof(kp2p->p_login));
kp2p->p_vm_rssize = kp->kp_eproc.e_xrssize;
kp2p->p_vm_tsize = kp->kp_eproc.e_vm.vm_tsize;
kp2p->p_vm_dsize = kp->kp_eproc.e_vm.vm_dsize;
kp2p->p_vm_ssize = kp->kp_eproc.e_vm.vm_ssize;
kp2p->p_eflag = kp->kp_eproc.e_flag;
if (P_ZOMBIE(&kp->kp_proc) || kp->kp_proc.p_addr == NULL ||
KREAD(kd, (u_long)kp->kp_proc.p_addr, &user)) {
kp2p->p_uvalid = 0;
} else {
kp2p->p_uvalid = 1;
kp2p->p_ustart_sec = user.u_stats.p_start.tv_sec;
kp2p->p_ustart_usec = user.u_stats.p_start.tv_usec;
kp2p->p_uutime_sec = user.u_stats.p_ru.ru_utime.tv_sec;
kp2p->p_uutime_usec = user.u_stats.p_ru.ru_utime.tv_usec;
kp2p->p_ustime_sec = user.u_stats.p_ru.ru_stime.tv_sec;
kp2p->p_ustime_usec = user.u_stats.p_ru.ru_stime.tv_usec;
kp2p->p_uru_maxrss = user.u_stats.p_ru.ru_maxrss;
kp2p->p_uru_ixrss = user.u_stats.p_ru.ru_ixrss;
kp2p->p_uru_idrss = user.u_stats.p_ru.ru_idrss;
kp2p->p_uru_isrss = user.u_stats.p_ru.ru_isrss;
kp2p->p_uru_minflt = user.u_stats.p_ru.ru_minflt;
kp2p->p_uru_majflt = user.u_stats.p_ru.ru_majflt;
kp2p->p_uru_nswap = user.u_stats.p_ru.ru_nswap;
kp2p->p_uru_inblock = user.u_stats.p_ru.ru_inblock;
kp2p->p_uru_oublock = user.u_stats.p_ru.ru_oublock;
kp2p->p_uru_msgsnd = user.u_stats.p_ru.ru_msgsnd;
kp2p->p_uru_msgrcv = user.u_stats.p_ru.ru_msgrcv;
kp2p->p_uru_nsignals = user.u_stats.p_ru.ru_nsignals;
kp2p->p_uru_nvcsw = user.u_stats.p_ru.ru_nvcsw;
kp2p->p_uru_nivcsw = user.u_stats.p_ru.ru_nivcsw;
kp2p->p_uctime_sec =
user.u_stats.p_cru.ru_utime.tv_sec +
user.u_stats.p_cru.ru_stime.tv_sec;
kp2p->p_uctime_usec =
user.u_stats.p_cru.ru_utime.tv_usec +
user.u_stats.p_cru.ru_stime.tv_usec;
}
memcpy(kp2c, &kp2, esize);
kp2c += esize;
}
free(kd->procbase);
}
*cnt = nprocs;
return (kd->procbase2);
}
/*
* Read proc's from memory file into buffer bp, which has space to hold
* at most maxcnt procs.
*/
static int
kvm_proclist(kvm_t *kd, int op, int arg, struct proc *p,
char *bp, int maxcnt, size_t esize)
{
struct kinfo_proc kp;
struct session sess;
struct pcred pcred;
struct ucred ucred;
struct proc proc, proc2;
struct process process, process2;
struct pgrp pgrp;
struct tty tty;
struct sigacts sa, *sap;
struct vmspace vm, *vmp;
struct plimit limits, *limp;
pid_t process_pid, parent_pid, leader_pid;
int cnt = 0;
int dothreads = 0;
dothreads = op & KERN_PROC_SHOW_THREADS;
op &= ~KERN_PROC_SHOW_THREADS;
for (; cnt < maxcnt && p != NULL; p = LIST_NEXT(&proc, p_list)) {
if (KREAD(kd, (u_long)p, &proc)) {
_kvm_err(kd, kd->program, "can't read proc at %x", p);
return (-1);
}
if (KREAD(kd, (u_long)proc.p_p, &process)) {
_kvm_err(kd, kd->program, "can't read process at %x",
proc.p_p);
return (-1);
}
if (KREAD(kd, (u_long)process.ps_cred, &pcred)) {
_kvm_err(kd, kd->program, "can't read pcred at %x",
process.ps_cred);
return (-1);
}
if ((proc.p_flag & P_THREAD) == 0)
process_pid = proc.p_pid;
else {
if (KREAD(kd, (u_long)process.ps_mainproc, &proc2)) {
_kvm_err(kd, kd->program,
"can't read proc at %x",
process.ps_mainproc);
return (-1);
}
process_pid = proc2.p_pid;
}
if (KREAD(kd, (u_long)pcred.pc_ucred, &ucred)) {
_kvm_err(kd, kd->program, "can't read ucred at %x",
pcred.pc_ucred);
return (-1);
}
if (KREAD(kd, (u_long)process.ps_pgrp, &pgrp)) {
_kvm_err(kd, kd->program, "can't read pgrp at %x",
process.ps_pgrp);
return (-1);
}
if (KREAD(kd, (u_long)pgrp.pg_session, &sess)) {
_kvm_err(kd, kd->program, "can't read session at %x",
pgrp.pg_session);
return (-1);
}
if ((process.ps_flags & PS_CONTROLT) && sess.s_ttyp != NULL &&
KREAD(kd, (u_long)sess.s_ttyp, &tty)) {
_kvm_err(kd, kd->program,
"can't read tty at %x", sess.s_ttyp);
return (-1);
}
if (process.ps_pptr) {
if (KREAD(kd, (u_long)process.ps_pptr, &process2)) {
_kvm_err(kd, kd->program,
"can't read process at %x",
process.ps_pptr);
return (-1);
}
if (KREAD(kd, (u_long)process2.ps_mainproc, &proc2)) {
_kvm_err(kd, kd->program,
"can't read proc at %x",
process2.ps_mainproc);
return (-1);
}
parent_pid = proc2.p_pid;
}
else
parent_pid = 0;
if (sess.s_leader) {
if (KREAD(kd, (u_long)sess.s_leader, &process2)) {
_kvm_err(kd, kd->program,
"can't read proc at %x", sess.s_leader);
return (-1);
}
if (KREAD(kd, (u_long)process2.ps_mainproc, &proc2)) {
_kvm_err(kd, kd->program,
"can't read proc at %x",
process2.ps_mainproc);
return (-1);
}
leader_pid = proc2.p_pid;
}
else
leader_pid = 0;
if (proc.p_sigacts) {
if (KREAD(kd, (u_long)proc.p_sigacts, &sa)) {
_kvm_err(kd, kd->program, "can't read sigacts at %x",
proc.p_sigacts);
return (-1);
}
sap = &sa;
}
else
sap = NULL;
switch (op) {
case KERN_PROC_PID:
if (proc.p_pid != (pid_t)arg)
continue;
break;
case KERN_PROC_PGRP:
if (pgrp.pg_id != (pid_t)arg)
continue;
break;
case KERN_PROC_SESSION:
if (sess.s_leader == NULL ||
leader_pid != (pid_t)arg)
continue;
break;
case KERN_PROC_TTY:
if ((process.ps_flags & PS_CONTROLT) == 0 ||
sess.s_ttyp == NULL ||
tty.t_dev != (dev_t)arg)
continue;
break;
case KERN_PROC_UID:
if (ucred.cr_uid != (uid_t)arg)
continue;
break;
case KERN_PROC_RUID:
if (pcred.p_ruid != (uid_t)arg)
continue;
break;
case KERN_PROC_ALL:
if (proc.p_flag & P_SYSTEM)
continue;
break;
case KERN_PROC_KTHREAD:
/* no filtering */
break;
default:
_kvm_err(kd, kd->program, "invalid filter");
return (-1);
}
/*
* We're going to add another proc to the set. If this
* will overflow the buffer, assume the reason is because
* nthreads (or the proc list) is corrupt and declare an error.
*/
if (cnt >= maxcnt) {
_kvm_err(kd, kd->program, "nthreads corrupt");
return (-1);
}
/* set up stuff that might not always be there */
vmp = &vm;
if (proc.p_stat == SIDL ||
P_ZOMBIE(&proc) ||
KREAD(kd, (u_long)proc.p_vmspace, &vm))
vmp = NULL;
limp = &limits;
if (!process.ps_limit ||
KREAD(kd, (u_long)process.ps_limit, &limits))
limp = NULL;
#define do_copy_str(_d, _s, _l) kvm_read(kd, (u_long)(_s), (_d), (_l)-1)
if ((proc.p_flag & P_THREAD) == 0) {
FILL_KPROC(&kp, do_copy_str, &proc, &process, &pcred,
&ucred, &pgrp, p, proc.p_p, &sess, vmp, limp, sap,
0);
/* stuff that's too painful to generalize */
kp.p_pid = process_pid;
kp.p_ppid = parent_pid;
kp.p_sid = leader_pid;
if ((process.ps_flags & PS_CONTROLT) &&
sess.s_ttyp != NULL) {
kp.p_tdev = tty.t_dev;
if (tty.t_pgrp != NULL &&
tty.t_pgrp != process.ps_pgrp &&
KREAD(kd, (u_long)tty.t_pgrp, &pgrp)) {
_kvm_err(kd, kd->program,
"can't read tpgrp at &x",
tty.t_pgrp);
return (-1);
}
kp.p_tpgid = tty.t_pgrp ? pgrp.pg_id : -1;
kp.p_tsess = PTRTOINT64(tty.t_session);
} else {
kp.p_tpgid = -1;
kp.p_tdev = NODEV;
}
memcpy(bp, &kp, esize);
bp += esize;
++cnt;
}
if (!dothreads)
continue;
FILL_KPROC(&kp, do_copy_str, &proc, &process, &pcred, &ucred,
&pgrp, p, proc.p_p, &sess, vmp, limp, sap, 1);
/* stuff that's too painful to generalize into the macros */
kp.p_pid = process_pid;
kp.p_ppid = parent_pid;
kp.p_sid = leader_pid;
if ((process.ps_flags & PS_CONTROLT) && sess.s_ttyp != NULL) {
kp.p_tdev = tty.t_dev;
if (tty.t_pgrp != NULL &&
tty.t_pgrp != process.ps_pgrp &&
KREAD(kd, (u_long)tty.t_pgrp, &pgrp)) {
_kvm_err(kd, kd->program,
"can't read tpgrp at &x", tty.t_pgrp);
return (-1);
}
kp.p_tpgid = tty.t_pgrp ? pgrp.pg_id : -1;
kp.p_tsess = PTRTOINT64(tty.t_session);
} else {
kp.p_tpgid = -1;
kp.p_tdev = NODEV;
}
memcpy(bp, &kp, esize);
bp += esize;
++cnt;
#undef do_copy_str
}
return (cnt);
}
/*
* code for returning process's command line arguments
*/
int
procfs_docmdline(
struct lwp *curl,
struct proc *p,
struct pfsnode *pfs,
struct uio *uio
)
{
struct ps_strings pss;
int count, error;
size_t i, len, xlen, upper_bound;
struct uio auio;
struct iovec aiov;
struct vmspace *vm;
vaddr_t argv;
char *arg;
/* Don't allow writing. */
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
/*
* Allocate a temporary buffer to hold the arguments.
*/
arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK);
/*
* Zombies don't have a stack, so we can't read their psstrings.
* System processes also don't have a user stack. This is what
* ps(1) would display.
*/
if (P_ZOMBIE(p) || (p->p_flag & PK_SYSTEM) != 0) {
len = snprintf(arg, PAGE_SIZE, "(%s)", p->p_comm) + 1;
error = uiomove_frombuf(arg, len, uio);
free(arg, M_TEMP);
return (error);
}
/*
* NOTE: Don't bother doing a process_checkioperm() here
* because the psstrings info is available by using ps(1),
* so it's not like there's anything to protect here.
*/
/*
* Lock the process down in memory.
*/
if ((error = proc_vmspace_getref(p, &vm)) != 0) {
free(arg, M_TEMP);
return (error);
}
/*
* Read in the ps_strings structure.
*/
aiov.iov_base = &pss;
aiov.iov_len = sizeof(pss);
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = (vaddr_t)p->p_psstr;
auio.uio_resid = sizeof(pss);
auio.uio_rw = UIO_READ;
UIO_SETUP_SYSSPACE(&auio);
error = uvm_io(&vm->vm_map, &auio);
if (error)
goto bad;
/*
* Now read the address of the argument vector.
*/
aiov.iov_base = &argv;
aiov.iov_len = sizeof(argv);
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = (vaddr_t)pss.ps_argvstr;
auio.uio_resid = sizeof(argv);
auio.uio_rw = UIO_READ;
UIO_SETUP_SYSSPACE(&auio);
error = uvm_io(&vm->vm_map, &auio);
if (error)
goto bad;
/*
* Now copy in the actual argument vector, one page at a time,
* since we don't know how long the vector is (though, we do
* know how many NUL-terminated strings are in the vector).
*/
len = 0;
count = pss.ps_nargvstr;
upper_bound = round_page(uio->uio_offset + uio->uio_resid);
for (; count && len < upper_bound; len += xlen) {
aiov.iov_base = arg;
aiov.iov_len = PAGE_SIZE;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = argv + len;
xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK);
auio.uio_resid = xlen;
auio.uio_rw = UIO_READ;
UIO_SETUP_SYSSPACE(&auio);
error = uvm_io(&vm->vm_map, &auio);
if (error)
goto bad;
for (i = 0; i < xlen && count != 0; i++) {
if (arg[i] == '\0')
count--; /* one full string */
}
if (len + i > uio->uio_offset) {
/* Have data in this page, copy it out */
error = uiomove(arg + uio->uio_offset - len,
i + len - uio->uio_offset, uio);
if (error || uio->uio_resid <= 0)
break;
}
}
bad:
/*
* Release the process.
*/
uvmspace_free(vm);
free(arg, M_TEMP);
return (error);
}
