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Implement setre[ug]id() compatibly with 4.3BSD, SunOS, and Linux.

This commit is contained in:
mycroft 1996-06-23 11:04:11 +00:00
parent c9e514192e
commit 351bdbd445
2 changed files with 92 additions and 4 deletions
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90
sys/kern/kern_prot.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: kern_prot.c,v 1.34 1996/05/22 02:22:47 mycroft Exp $ */
/* $NetBSD: kern_prot.c,v 1.35 1996/06/23 11:04:11 mycroft Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1990, 1991, 1993
@ -323,6 +323,51 @@ sys_seteuid(p, v, retval)
return (0);
}
int
sys_setreuid(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct sys_setreuid_args /* {
syscallarg(uid_t) ruid;
syscallarg(uid_t) euid;
} */ *uap = v;
register struct pcred *pc = p->p_cred;
register uid_t ruid, euid;
int error;
ruid = SCARG(uap, ruid);
euid = SCARG(uap, euid);
if (ruid != (uid_t)-1 &&
ruid != pc->p_ruid && ruid != pc->pc_ucred->cr_uid &&
(error = suser(pc->pc_ucred, &p->p_acflag)))
return (error);
if (euid != (uid_t)-1 &&
euid != pc->p_ruid && euid != pc->pc_ucred->cr_uid &&
euid != pc->p_svuid &&
(error = suser(pc->pc_ucred, &p->p_acflag)))
return (error);
if (euid != (uid_t)-1) {
pc->pc_ucred = crcopy(pc->pc_ucred);
pc->pc_ucred->cr_uid = euid;
}
if (ruid != (uid_t)-1) {
(void)chgproccnt(pc->p_ruid, -1);
(void)chgproccnt(ruid, 1);
pc->p_ruid = ruid;
pc->p_svuid = pc->pc_ucred->cr_uid;
}
if (euid != (uid_t)-1 && ruid != (uid_t)-1)
p->p_flag |= P_SUGID;
return (0);
}
/* ARGSUSED */
int
sys_setgid(p, v, retval)
@ -381,6 +426,49 @@ sys_setegid(p, v, retval)
return (0);
}
int
sys_setregid(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct sys_setregid_args /* {
syscallarg(gid_t) rgid;
syscallarg(gid_t) egid;
} */ *uap = v;
register struct pcred *pc = p->p_cred;
register gid_t rgid, egid;
int error;
rgid = SCARG(uap, rgid);
egid = SCARG(uap, egid);
if (rgid != (gid_t)-1 &&
rgid != pc->p_rgid && rgid != pc->pc_ucred->cr_gid &&
(error = suser(pc->pc_ucred, &p->p_acflag)))
return (error);
if (egid != (gid_t)-1 &&
egid != pc->p_rgid && egid != pc->pc_ucred->cr_gid &&
egid != pc->p_svgid &&
(error = suser(pc->pc_ucred, &p->p_acflag)))
return (error);
if (egid != (gid_t)-1) {
pc->pc_ucred = crcopy(pc->pc_ucred);
pc->pc_ucred->cr_gid = egid;
}
if (rgid != (gid_t)-1) {
pc->p_rgid = rgid;
pc->p_svgid = pc->pc_ucred->cr_gid;
}
if (egid != (gid_t)-1 && rgid != (gid_t)-1)
p->p_flag |= P_SUGID;
return (0);
}
/* ARGSUSED */
int
sys_setgroups(p, v, retval)

6
sys/kern/syscalls.master
View File

@ -1,4 +1,4 @@
$NetBSD: syscalls.master,v 1.32 1996/04/23 10:24:21 mycroft Exp $
$NetBSD: syscalls.master,v 1.33 1996/06/23 11:06:54 mycroft Exp $
; @(#)syscalls.master 8.2 (Berkeley) 1/13/94
@ -216,8 +216,8 @@
125 COMPAT_43 { int sys_recvfrom(int s, caddr_t buf, size_t len, \
int flags, caddr_t from, int *fromlenaddr); } \
orecvfrom
126 COMPAT_43 { int sys_setreuid(int ruid, int euid); } osetreuid
127 COMPAT_43 { int sys_setregid(int rgid, int egid); } osetregid
126 STD { int sys_setreuid(int ruid, int euid); }
127 STD { int sys_setregid(int rgid, int egid); }
128 STD { int sys_rename(char *from, char *to); }
129 COMPAT_43 { int sys_truncate(char *path, long length); } \
otruncate