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- #include <sys/param.h>
- #include <sys/acct.h>
- #include <sys/systm.h>
- #include <sys/ucred.h>
- #include <sys/proc.h>
- #include <sys/filedesc.h>
- #include <sys/pool.h>
- #include <sys/mount.h>
- #include <sys/syscallargs.h>
- #ifdef __HAVE_MD_TCB
- # include <machine/tcb.h>
- #endif
- inline void
- crset(struct ucred *newcr, const struct ucred *cr)
- {
- KASSERT(cr->cr_ref > 0);
- memcpy(
- (char *)newcr + offsetof(struct ucred, cr_startcopy),
- (const char *)cr + offsetof(struct ucred, cr_startcopy),
- sizeof(*cr) - offsetof(struct ucred, cr_startcopy));
- }
- int
- sys_getpid(struct proc *p, void *v, register_t *retval)
- {
- *retval = p->p_p->ps_pid;
- return (0);
- }
- int
- sys_getthrid(struct proc *p, void *v, register_t *retval)
- {
- *retval = p->p_pid + THREAD_PID_OFFSET;
- return (0);
- }
- int
- sys_getppid(struct proc *p, void *v, register_t *retval)
- {
- *retval = p->p_p->ps_pptr->ps_pid;
- return (0);
- }
- int
- sys_getpgrp(struct proc *p, void *v, register_t *retval)
- {
- *retval = p->p_p->ps_pgrp->pg_id;
- return (0);
- }
- int
- sys_getpgid(struct proc *curp, void *v, register_t *retval)
- {
- struct sys_getpgid_args
- *uap = v;
- struct process *targpr = curp->p_p;
- if (SCARG(uap, pid) == 0 || SCARG(uap, pid) == targpr->ps_pid)
- goto found;
- if ((targpr = prfind(SCARG(uap, pid))) == NULL)
- return (ESRCH);
- if (targpr->ps_session != curp->p_p->ps_session)
- return (EPERM);
- found:
- *retval = targpr->ps_pgid;
- return (0);
- }
- int
- sys_getsid(struct proc *curp, void *v, register_t *retval)
- {
- struct sys_getsid_args
- *uap = v;
- struct process *targpr = curp->p_p;
- if (SCARG(uap, pid) == 0 || SCARG(uap, pid) == targpr->ps_pid)
- goto found;
- if ((targpr = prfind(SCARG(uap, pid))) == NULL)
- return (ESRCH);
- if (targpr->ps_session != curp->p_p->ps_session)
- return (EPERM);
- found:
-
- if (targpr->ps_pgrp->pg_session->s_leader == NULL)
- return (ESRCH);
- *retval = targpr->ps_pgrp->pg_session->s_leader->ps_pid;
- return (0);
- }
- int
- sys_getuid(struct proc *p, void *v, register_t *retval)
- {
- *retval = p->p_ucred->cr_ruid;
- return (0);
- }
- int
- sys_geteuid(struct proc *p, void *v, register_t *retval)
- {
- *retval = p->p_ucred->cr_uid;
- return (0);
- }
- int
- sys_issetugid(struct proc *p, void *v, register_t *retval)
- {
- if (p->p_p->ps_flags & PS_SUGIDEXEC)
- *retval = 1;
- else
- *retval = 0;
- return (0);
- }
- int
- sys_getgid(struct proc *p, void *v, register_t *retval)
- {
- *retval = p->p_ucred->cr_rgid;
- return (0);
- }
- int
- sys_getegid(struct proc *p, void *v, register_t *retval)
- {
- *retval = p->p_ucred->cr_gid;
- return (0);
- }
- int
- sys_getgroups(struct proc *p, void *v, register_t *retval)
- {
- struct sys_getgroups_args
- *uap = v;
- struct ucred *uc = p->p_ucred;
- u_int ngrp;
- int error;
- if ((ngrp = SCARG(uap, gidsetsize)) == 0) {
- *retval = uc->cr_ngroups;
- return (0);
- }
- if (ngrp < uc->cr_ngroups)
- return (EINVAL);
- ngrp = uc->cr_ngroups;
- error = copyout(uc->cr_groups, SCARG(uap, gidset),
- ngrp * sizeof(gid_t));
- if (error)
- return (error);
- *retval = ngrp;
- return (0);
- }
- int
- sys_setsid(struct proc *p, void *v, register_t *retval)
- {
- struct session *newsess;
- struct pgrp *newpgrp;
- struct process *pr = p->p_p;
- pid_t pid = pr->ps_pid;
- newsess = pool_get(&session_pool, PR_WAITOK);
- newpgrp = pool_get(&pgrp_pool, PR_WAITOK);
- if (pr->ps_pgid == pid || pgfind(pid)) {
- pool_put(&pgrp_pool, newpgrp);
- pool_put(&session_pool, newsess);
- return (EPERM);
- } else {
- (void) enterpgrp(pr, pid, newpgrp, newsess);
- *retval = pid;
- return (0);
- }
- }
- int
- sys_setpgid(struct proc *curp, void *v, register_t *retval)
- {
- struct sys_setpgid_args
- *uap = v;
- struct process *curpr = curp->p_p;
- struct process *targpr;
- struct pgrp *pgrp, *newpgrp;
- pid_t pid, pgid;
- int error;
- pid = SCARG(uap, pid);
- pgid = SCARG(uap, pgid);
- if (pgid < 0)
- return (EINVAL);
- newpgrp = pool_get(&pgrp_pool, PR_WAITOK);
- if (pid != 0 && pid != curpr->ps_pid) {
- if ((targpr = prfind(pid)) == 0 || !inferior(targpr, curpr)) {
- error = ESRCH;
- goto out;
- }
- if (targpr->ps_session != curpr->ps_session) {
- error = EPERM;
- goto out;
- }
- if (targpr->ps_flags & PS_EXEC) {
- error = EACCES;
- goto out;
- }
- } else
- targpr = curpr;
- if (SESS_LEADER(targpr)) {
- error = EPERM;
- goto out;
- }
- if (pgid == 0)
- pgid = targpr->ps_pid;
- else if (pgid != targpr->ps_pid)
- if ((pgrp = pgfind(pgid)) == 0 ||
- pgrp->pg_session != curpr->ps_session) {
- error = EPERM;
- goto out;
- }
- return (enterpgrp(targpr, pgid, newpgrp, NULL));
- out:
- pool_put(&pgrp_pool, newpgrp);
- return (error);
- }
- int
- sys_getresuid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_getresuid_args
- *uap = v;
- struct ucred *uc = p->p_ucred;
- uid_t *ruid, *euid, *suid;
- int error1 = 0, error2 = 0, error3 = 0;
- ruid = SCARG(uap, ruid);
- euid = SCARG(uap, euid);
- suid = SCARG(uap, suid);
- if (ruid != NULL)
- error1 = copyout(&uc->cr_ruid, ruid, sizeof(*ruid));
- if (euid != NULL)
- error2 = copyout(&uc->cr_uid, euid, sizeof(*euid));
- if (suid != NULL)
- error3 = copyout(&uc->cr_svuid, suid, sizeof(*suid));
- return (error1 ? error1 : error2 ? error2 : error3);
- }
- int
- sys_setresuid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_setresuid_args
- *uap = v;
- struct process *pr = p->p_p;
- struct ucred *pruc, *newcred, *uc = p->p_ucred;
- uid_t ruid, euid, suid;
- int error;
- ruid = SCARG(uap, ruid);
- euid = SCARG(uap, euid);
- suid = SCARG(uap, suid);
-
- pruc = pr->ps_ucred;
- if ((ruid == (uid_t)-1 || ruid == pruc->cr_ruid) &&
- (euid == (uid_t)-1 || euid == pruc->cr_uid) &&
- (suid == (uid_t)-1 || suid == pruc->cr_svuid))
- return (0);
-
- if (ruid != (uid_t)-1 &&
- ruid != uc->cr_ruid &&
- ruid != uc->cr_uid &&
- ruid != uc->cr_svuid &&
- (error = suser(p, 0)))
- return (error);
- if (euid != (uid_t)-1 &&
- euid != uc->cr_ruid &&
- euid != uc->cr_uid &&
- euid != uc->cr_svuid &&
- (error = suser(p, 0)))
- return (error);
- if (suid != (uid_t)-1 &&
- suid != uc->cr_ruid &&
- suid != uc->cr_uid &&
- suid != uc->cr_svuid &&
- (error = suser(p, 0)))
- return (error);
-
- newcred = crget();
- pruc = pr->ps_ucred;
- crset(newcred, pruc);
-
- if (ruid != (uid_t)-1)
- newcred->cr_ruid = ruid;
- if (euid != (uid_t)-1)
- newcred->cr_uid = euid;
- if (suid != (uid_t)-1)
- newcred->cr_svuid = suid;
- pr->ps_ucred = newcred;
- atomic_setbits_int(&p->p_p->ps_flags, PS_SUGID);
-
- if (ruid != (uid_t)-1 && ruid != pruc->cr_ruid) {
- chgproccnt(pruc->cr_ruid, -1);
- chgproccnt(ruid, 1);
- }
- crfree(pruc);
- return (0);
- }
- int
- sys_getresgid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_getresgid_args
- *uap = v;
- struct ucred *uc = p->p_ucred;
- gid_t *rgid, *egid, *sgid;
- int error1 = 0, error2 = 0, error3 = 0;
- rgid = SCARG(uap, rgid);
- egid = SCARG(uap, egid);
- sgid = SCARG(uap, sgid);
- if (rgid != NULL)
- error1 = copyout(&uc->cr_rgid, rgid, sizeof(*rgid));
- if (egid != NULL)
- error2 = copyout(&uc->cr_gid, egid, sizeof(*egid));
- if (sgid != NULL)
- error3 = copyout(&uc->cr_svgid, sgid, sizeof(*sgid));
- return (error1 ? error1 : error2 ? error2 : error3);
- }
- int
- sys_setresgid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_setresgid_args
- *uap = v;
- struct process *pr = p->p_p;
- struct ucred *pruc, *newcred, *uc = p->p_ucred;
- gid_t rgid, egid, sgid;
- int error;
- rgid = SCARG(uap, rgid);
- egid = SCARG(uap, egid);
- sgid = SCARG(uap, sgid);
-
- pruc = pr->ps_ucred;
- if ((rgid == (gid_t)-1 || rgid == pruc->cr_rgid) &&
- (egid == (gid_t)-1 || egid == pruc->cr_gid) &&
- (sgid == (gid_t)-1 || sgid == pruc->cr_svgid))
- return (0);
-
- if (rgid != (gid_t)-1 &&
- rgid != uc->cr_rgid &&
- rgid != uc->cr_gid &&
- rgid != uc->cr_svgid &&
- (error = suser(p, 0)))
- return (error);
- if (egid != (gid_t)-1 &&
- egid != uc->cr_rgid &&
- egid != uc->cr_gid &&
- egid != uc->cr_svgid &&
- (error = suser(p, 0)))
- return (error);
- if (sgid != (gid_t)-1 &&
- sgid != uc->cr_rgid &&
- sgid != uc->cr_gid &&
- sgid != uc->cr_svgid &&
- (error = suser(p, 0)))
- return (error);
-
- newcred = crget();
- pruc = pr->ps_ucred;
- crset(newcred, pruc);
-
- if (rgid != (gid_t)-1)
- newcred->cr_rgid = rgid;
- if (egid != (gid_t)-1)
- newcred->cr_gid = egid;
- if (sgid != (gid_t)-1)
- newcred->cr_svgid = sgid;
- pr->ps_ucred = newcred;
- atomic_setbits_int(&p->p_p->ps_flags, PS_SUGID);
- crfree(pruc);
- return (0);
- }
- int
- sys_setregid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_setregid_args
- *uap = v;
- struct process *pr = p->p_p;
- struct ucred *pruc, *newcred, *uc = p->p_ucred;
- gid_t rgid, egid;
- int error;
- rgid = SCARG(uap, rgid);
- egid = SCARG(uap, egid);
-
- pruc = pr->ps_ucred;
- if ((rgid == (gid_t)-1 || rgid == pruc->cr_rgid) &&
- (egid == (gid_t)-1 || egid == pruc->cr_gid) &&
- (rgid == (gid_t)-1 || (rgid == pruc->cr_rgid &&
- pruc->cr_svgid == (egid != (gid_t)-1 ? egid : pruc->cr_gid))))
- return (0);
-
- if (rgid != (gid_t)-1 &&
- rgid != uc->cr_rgid &&
- rgid != uc->cr_gid &&
- rgid != uc->cr_svgid &&
- (error = suser(p, 0)))
- return (error);
- if (egid != (gid_t)-1 &&
- egid != uc->cr_rgid &&
- egid != uc->cr_gid &&
- egid != uc->cr_svgid &&
- (error = suser(p, 0)))
- return (error);
-
- newcred = crget();
- pruc = pr->ps_ucred;
- crset(newcred, pruc);
- if (rgid != (gid_t)-1)
- newcred->cr_rgid = rgid;
- if (egid != (gid_t)-1)
- newcred->cr_gid = egid;
-
- if (rgid != (gid_t)-1 && (rgid != pruc->cr_rgid ||
- pruc->cr_svgid != (egid != (gid_t)-1 ? egid : pruc->cr_gid)))
- newcred->cr_svgid = rgid;
- pr->ps_ucred = newcred;
- atomic_setbits_int(&p->p_p->ps_flags, PS_SUGID);
- crfree(pruc);
- return (0);
- }
- int
- sys_setreuid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_setreuid_args
- *uap = v;
- struct process *pr = p->p_p;
- struct ucred *pruc, *newcred, *uc = p->p_ucred;
- uid_t ruid, euid;
- int error;
- ruid = SCARG(uap, ruid);
- euid = SCARG(uap, euid);
-
- pruc = pr->ps_ucred;
- if ((ruid == (uid_t)-1 || ruid == pruc->cr_ruid) &&
- (euid == (uid_t)-1 || euid == pruc->cr_uid) &&
- (ruid == (uid_t)-1 || (ruid == pruc->cr_ruid &&
- pruc->cr_svuid == (euid != (uid_t)-1 ? euid : pruc->cr_uid))))
- return (0);
-
- if (ruid != (uid_t)-1 &&
- ruid != uc->cr_ruid &&
- ruid != uc->cr_uid &&
- ruid != uc->cr_svuid &&
- (error = suser(p, 0)))
- return (error);
- if (euid != (uid_t)-1 &&
- euid != uc->cr_ruid &&
- euid != uc->cr_uid &&
- euid != uc->cr_svuid &&
- (error = suser(p, 0)))
- return (error);
-
- newcred = crget();
- pruc = pr->ps_ucred;
- crset(newcred, pruc);
- if (ruid != (uid_t)-1)
- newcred->cr_ruid = ruid;
- if (euid != (uid_t)-1)
- newcred->cr_uid = euid;
-
- if (ruid != (uid_t)-1 && (ruid != pruc->cr_ruid ||
- pruc->cr_svuid != (euid != (uid_t)-1 ? euid : pruc->cr_uid)))
- newcred->cr_svuid = ruid;
- pr->ps_ucred = newcred;
- atomic_setbits_int(&p->p_p->ps_flags, PS_SUGID);
-
- if (ruid != (uid_t)-1 && ruid != pruc->cr_ruid) {
- chgproccnt(pruc->cr_ruid, -1);
- chgproccnt(ruid, 1);
- }
- crfree(pruc);
- return (0);
- }
- int
- sys_setuid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_setuid_args
- *uap = v;
- struct process *pr = p->p_p;
- struct ucred *pruc, *newcred, *uc = p->p_ucred;
- uid_t uid;
- int did_real, error;
- uid = SCARG(uap, uid);
- pruc = pr->ps_ucred;
- if (pruc->cr_uid == uid &&
- pruc->cr_ruid == uid &&
- pruc->cr_svuid == uid)
- return (0);
- if (uid != uc->cr_ruid &&
- uid != uc->cr_svuid &&
- uid != uc->cr_uid &&
- (error = suser(p, 0)))
- return (error);
-
- newcred = crget();
- pruc = pr->ps_ucred;
- crset(newcred, pruc);
-
- if (uid == pruc->cr_uid || suser(p, 0) == 0) {
- did_real = 1;
- newcred->cr_ruid = uid;
- newcred->cr_svuid = uid;
- } else
- did_real = 0;
- newcred->cr_uid = uid;
- pr->ps_ucred = newcred;
- atomic_setbits_int(&p->p_p->ps_flags, PS_SUGID);
-
- if (did_real && uid != pruc->cr_ruid) {
- chgproccnt(pruc->cr_ruid, -1);
- chgproccnt(uid, 1);
- }
- crfree(pruc);
- return (0);
- }
- int
- sys_seteuid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_seteuid_args
- *uap = v;
- struct process *pr = p->p_p;
- struct ucred *pruc, *newcred, *uc = p->p_ucred;
- uid_t euid;
- int error;
- euid = SCARG(uap, euid);
- if (pr->ps_ucred->cr_uid == euid)
- return (0);
- if (euid != uc->cr_ruid && euid != uc->cr_svuid &&
- (error = suser(p, 0)))
- return (error);
-
- newcred = crget();
- pruc = pr->ps_ucred;
- crset(newcred, pruc);
- newcred->cr_uid = euid;
- pr->ps_ucred = newcred;
- atomic_setbits_int(&p->p_p->ps_flags, PS_SUGID);
- crfree(pruc);
- return (0);
- }
- int
- sys_setgid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_setgid_args
- *uap = v;
- struct process *pr = p->p_p;
- struct ucred *pruc, *newcred, *uc = p->p_ucred;
- gid_t gid;
- int error;
- gid = SCARG(uap, gid);
- pruc = pr->ps_ucred;
- if (pruc->cr_gid == gid &&
- pruc->cr_rgid == gid &&
- pruc->cr_svgid == gid)
- return (0);
- if (gid != uc->cr_rgid &&
- gid != uc->cr_svgid &&
- gid != uc->cr_gid &&
- (error = suser(p, 0)))
- return (error);
-
- newcred = crget();
- pruc = pr->ps_ucred;
- crset(newcred, pruc);
- if (gid == pruc->cr_gid || suser(p, 0) == 0) {
- newcred->cr_rgid = gid;
- newcred->cr_svgid = gid;
- }
- newcred->cr_gid = gid;
- pr->ps_ucred = newcred;
- atomic_setbits_int(&p->p_p->ps_flags, PS_SUGID);
- crfree(pruc);
- return (0);
- }
- int
- sys_setegid(struct proc *p, void *v, register_t *retval)
- {
- struct sys_setegid_args
- *uap = v;
- struct process *pr = p->p_p;
- struct ucred *pruc, *newcred, *uc = p->p_ucred;
- gid_t egid;
- int error;
- egid = SCARG(uap, egid);
- if (pr->ps_ucred->cr_gid == egid)
- return (0);
- if (egid != uc->cr_rgid && egid != uc->cr_svgid &&
- (error = suser(p, 0)))
- return (error);
-
- newcred = crget();
- pruc = pr->ps_ucred;
- crset(newcred, pruc);
- newcred->cr_gid = egid;
- pr->ps_ucred = newcred;
- atomic_setbits_int(&p->p_p->ps_flags, PS_SUGID);
- crfree(pruc);
- return (0);
- }
- int
- sys_setgroups(struct proc *p, void *v, register_t *retval)
- {
- struct sys_setgroups_args
- *uap = v;
- struct process *pr = p->p_p;
- struct ucred *pruc, *newcred;
- gid_t groups[NGROUPS_MAX];
- u_int ngrp;
- int error;
- if ((error = suser(p, 0)) != 0)
- return (error);
- ngrp = SCARG(uap, gidsetsize);
- if (ngrp > NGROUPS_MAX)
- return (EINVAL);
- error = copyin(SCARG(uap, gidset), groups, ngrp * sizeof(gid_t));
- if (error == 0) {
- newcred = crget();
- pruc = pr->ps_ucred;
- crset(newcred, pruc);
- memcpy(newcred->cr_groups, groups, ngrp * sizeof(gid_t));
- newcred->cr_ngroups = ngrp;
- pr->ps_ucred = newcred;
- atomic_setbits_int(&p->p_p->ps_flags, PS_SUGID);
- crfree(pruc);
- }
- return (error);
- }
- int
- groupmember(gid_t gid, struct ucred *cred)
- {
- gid_t *gp;
- gid_t *egp;
- if (cred->cr_gid == gid)
- return (1);
- egp = &(cred->cr_groups[cred->cr_ngroups]);
- for (gp = cred->cr_groups; gp < egp; gp++)
- if (*gp == gid)
- return (1);
- return (0);
- }
- int
- suser(struct proc *p, u_int flags)
- {
- struct ucred *cred = p->p_ucred;
- if (cred->cr_uid == 0) {
- if (!(flags & SUSER_NOACCT))
- p->p_p->ps_acflag |= ASU;
- return (0);
- }
- return (EPERM);
- }
- int
- suser_ucred(struct ucred *cred)
- {
- if (cred->cr_uid == 0)
- return (0);
- return (EPERM);
- }
- struct ucred *
- crget(void)
- {
- struct ucred *cr;
- cr = pool_get(&ucred_pool, PR_WAITOK|PR_ZERO);
- cr->cr_ref = 1;
- return (cr);
- }
- void
- crfree(struct ucred *cr)
- {
- if (--cr->cr_ref == 0)
- pool_put(&ucred_pool, cr);
- }
- struct ucred *
- crcopy(struct ucred *cr)
- {
- struct ucred *newcr;
- if (cr->cr_ref == 1)
- return (cr);
- newcr = crget();
- *newcr = *cr;
- crfree(cr);
- newcr->cr_ref = 1;
- return (newcr);
- }
- struct ucred *
- crdup(struct ucred *cr)
- {
- struct ucred *newcr;
- newcr = crget();
- *newcr = *cr;
- newcr->cr_ref = 1;
- return (newcr);
- }
- int
- crfromxucred(struct ucred *cr, const struct xucred *xcr)
- {
- if (xcr->cr_ngroups < 0 || xcr->cr_ngroups > NGROUPS_MAX)
- return (EINVAL);
- cr->cr_ref = 1;
- cr->cr_uid = xcr->cr_uid;
- cr->cr_gid = xcr->cr_gid;
- cr->cr_ngroups = xcr->cr_ngroups;
- memcpy(cr->cr_groups, xcr->cr_groups,
- sizeof(cr->cr_groups[0]) * xcr->cr_ngroups);
- return (0);
- }
- int
- sys_getlogin(struct proc *p, void *v, register_t *retval)
- {
- struct sys_getlogin_args
- *uap = v;
- struct session *s = p->p_p->ps_pgrp->pg_session;
- if (SCARG(uap, namelen) > sizeof(s->s_login))
- SCARG(uap, namelen) = sizeof(s->s_login);
- return (copyout((caddr_t)s->s_login,
- (caddr_t)SCARG(uap, namebuf), SCARG(uap, namelen)));
- }
- int
- sys_setlogin(struct proc *p, void *v, register_t *retval)
- {
- struct sys_setlogin_args
- *uap = v;
- struct session *s = p->p_p->ps_pgrp->pg_session;
- int error;
- if ((error = suser(p, 0)) != 0)
- return (error);
- error = copyinstr((caddr_t)SCARG(uap, namebuf), (caddr_t)s->s_login,
- sizeof(s->s_login), NULL);
- if (error == ENAMETOOLONG)
- error = EINVAL;
- return (error);
- }
- int
- proc_cansugid(struct proc *p)
- {
-
- if ((p->p_p->ps_flags & PS_TRACED) != 0)
- return (0);
-
- if (p->p_fd->fd_refcnt > 1)
- return (0);
-
- return (1);
- }
- int
- sys___set_tcb(struct proc *p, void *v, register_t *retval)
- {
- struct sys___set_tcb_args
- *uap = v;
- TCB_SET(p, SCARG(uap, tcb));
- return (0);
- }
- int
- sys___get_tcb(struct proc *p, void *v, register_t *retval)
- {
- *retval = (register_t)TCB_GET(p);
- return (0);
- }
- void
- dorefreshcreds(struct process *pr, struct proc *p)
- {
- struct ucred *uc = p->p_ucred;
- KERNEL_LOCK();
- if (uc != pr->ps_ucred) {
- p->p_ucred = pr->ps_ucred;
- crhold(p->p_ucred);
- crfree(uc);
- }
- KERNEL_UNLOCK();
- }
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