diff options
Diffstat (limited to 'sys/kern/kern_prot.c')
| -rw-r--r-- | sys/kern/kern_prot.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/sys/kern/kern_prot.c b/sys/kern/kern_prot.c index e2a4f44..2ac10da 100644 --- a/sys/kern/kern_prot.c +++ b/sys/kern/kern_prot.c @@ -716,6 +716,164 @@ setregid(p, uap) return (0); } +/* + * setresuid(ruid, euid, suid) is like setreuid except control over the + * saved uid is explicit. + */ + +#ifndef _SYS_SYSPROTO_H_ +struct setresuid_args { + uid_t ruid; + uid_t euid; + uid_t suid; +}; +#endif +/* ARGSUSED */ +int +setresuid(p, uap) + register struct proc *p; + struct setresuid_args *uap; +{ + register struct pcred *pc = p->p_cred; + register uid_t ruid, euid, suid; + int error; + + ruid = uap->ruid; + euid = uap->euid; + suid = uap->suid; + if (((ruid != (uid_t)-1 && ruid != pc->p_ruid && ruid != pc->p_svuid && + ruid != pc->pc_ucred->cr_uid) || + (euid != (uid_t)-1 && euid != pc->p_ruid && euid != pc->p_svuid && + euid != pc->pc_ucred->cr_uid) || + (suid != (uid_t)-1 && suid != pc->p_ruid && suid != pc->p_svuid && + suid != pc->pc_ucred->cr_uid)) && + (error = suser_xxx(0, p, PRISON_ROOT)) != 0) + return (error); + if (euid != (uid_t)-1 && pc->pc_ucred->cr_uid != euid) { + pc->pc_ucred = crcopy(pc->pc_ucred); + pc->pc_ucred->cr_uid = euid; + setsugid(p); + } + if (ruid != (uid_t)-1 && pc->p_ruid != ruid) { + (void)chgproccnt(pc->p_ruid, -1); + (void)chgproccnt(ruid, 1); + pc->p_ruid = ruid; + setsugid(p); + } + if (suid != (uid_t)-1 && pc->p_svuid != suid) { + pc->p_svuid = suid; + setsugid(p); + } + return (0); +} + +/* + * setresgid(rgid, egid, sgid) is like setregid except control over the + * saved gid is explicit. + */ + +#ifndef _SYS_SYSPROTO_H_ +struct setresgid_args { + gid_t rgid; + gid_t egid; + gid_t sgid; +}; +#endif +/* ARGSUSED */ +int +setresgid(p, uap) + register struct proc *p; + struct setresgid_args *uap; +{ + register struct pcred *pc = p->p_cred; + register gid_t rgid, egid, sgid; + int error; + + rgid = uap->rgid; + egid = uap->egid; + sgid = uap->sgid; + if (((rgid != (gid_t)-1 && rgid != pc->p_rgid && rgid != pc->p_svgid && + rgid != pc->pc_ucred->cr_groups[0]) || + (egid != (gid_t)-1 && egid != pc->p_rgid && egid != pc->p_svgid && + egid != pc->pc_ucred->cr_groups[0]) || + (sgid != (gid_t)-1 && sgid != pc->p_rgid && sgid != pc->p_svgid && + sgid != pc->pc_ucred->cr_groups[0])) && + (error = suser_xxx(0, p, PRISON_ROOT)) != 0) + return (error); + + if (egid != (gid_t)-1 && pc->pc_ucred->cr_groups[0] != egid) { + pc->pc_ucred = crcopy(pc->pc_ucred); + pc->pc_ucred->cr_groups[0] = egid; + setsugid(p); + } + if (rgid != (gid_t)-1 && pc->p_rgid != rgid) { + pc->p_rgid = rgid; + setsugid(p); + } + if (sgid != (gid_t)-1 && pc->p_svgid != sgid) { + pc->p_svgid = sgid; + setsugid(p); + } + return (0); +} + +#ifndef _SYS_SYSPROTO_H_ +struct getresuid_args { + uid_t *ruid; + uid_t *euid; + uid_t *suid; +}; +#endif +/* ARGSUSED */ +int +getresuid(p, uap) + register struct proc *p; + struct getresuid_args *uap; +{ + struct pcred *pc = p->p_cred; + int error1 = 0, error2 = 0, error3 = 0; + + if (uap->ruid) + error1 = copyout((caddr_t)&pc->p_ruid, + (caddr_t)uap->ruid, sizeof(pc->p_ruid)); + if (uap->euid) + error2 = copyout((caddr_t)&pc->pc_ucred->cr_uid, + (caddr_t)uap->euid, sizeof(pc->pc_ucred->cr_uid)); + if (uap->suid) + error3 = copyout((caddr_t)&pc->p_svuid, + (caddr_t)uap->suid, sizeof(pc->p_svuid)); + return error1 ? error1 : (error2 ? error2 : error3); +} + +#ifndef _SYS_SYSPROTO_H_ +struct getresgid_args { + gid_t *rgid; + gid_t *egid; + gid_t *sgid; +}; +#endif +/* ARGSUSED */ +int +getresgid(p, uap) + register struct proc *p; + struct getresgid_args *uap; +{ + struct pcred *pc = p->p_cred; + int error1 = 0, error2 = 0, error3 = 0; + + if (uap->rgid) + error1 = copyout((caddr_t)&pc->p_rgid, + (caddr_t)uap->rgid, sizeof(pc->p_rgid)); + if (uap->egid) + error2 = copyout((caddr_t)&pc->pc_ucred->cr_groups[0], + (caddr_t)uap->egid, sizeof(pc->pc_ucred->cr_groups[0])); + if (uap->sgid) + error3 = copyout((caddr_t)&pc->p_svgid, + (caddr_t)uap->sgid, sizeof(pc->p_svgid)); + return error1 ? error1 : (error2 ? error2 : error3); +} + + #ifndef _SYS_SYSPROTO_H_ struct issetugid_args { int dummy; |
