Differential D52276 Diff 162242 sys/compat/linux/linux_misc.c

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sys/compat/linux/linux_misc.c

Show First 20 Lines • Show All 1,022 Lines • ▼ Show 20 Lines	linux_nice(struct thread td, struct linux_nice_args args)

return (kern_setpriority(td, PRIO_PROCESS, 0, args->inc));		return (kern_setpriority(td, PRIO_PROCESS, 0, args->inc));
}		}
#endif /* __i386__ \|\| (__amd64__ && COMPAT_LINUX32) */		#endif /* __i386__ \|\| (__amd64__ && COMPAT_LINUX32) */

int		int
linux_setgroups(struct thread td, struct linux_setgroups_args args)		linux_setgroups(struct thread td, struct linux_setgroups_args args)
{		{
		const int ngrp = args->gidsetsize;
struct ucred newcred, oldcred;		struct ucred newcred, oldcred;
l_gid_t *linux_gidset;		l_gid_t *linux_gidset;
int ngrp, error;		int error;
struct proc *p;		struct proc *p;

ngrp = args->gidsetsize;
if (ngrp < 0 \|\| ngrp >= ngroups_max)		if (ngrp < 0 \|\| ngrp >= ngroups_max)
return (EINVAL);		return (EINVAL);
linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_LINUX, M_WAITOK);		linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_LINUX, M_WAITOK);
error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t));		error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t));
if (error)		if (error)
goto out;		goto out;

newcred = crget();		newcred = crget();
crextend(newcred, ngrp);		crextend(newcred, ngrp);
p = td->td_proc;		p = td->td_proc;
PROC_LOCK(p);		PROC_LOCK(p);
oldcred = p->p_ucred;		oldcred = p->p_ucred;
crcopy(newcred, oldcred);		crcopy(newcred, oldcred);

if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS)) != 0) {		if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS)) != 0) {
Show All 15 Lines
out:		out:
free(linux_gidset, M_LINUX);		free(linux_gidset, M_LINUX);
return (error);		return (error);
}		}

int		int
linux_getgroups(struct thread td, struct linux_getgroups_args args)		linux_getgroups(struct thread td, struct linux_getgroups_args args)
{		{
struct ucred *cred;		const struct ucred *const cred = td->td_ucred;
l_gid_t *linux_gidset;		l_gid_t *linux_gidset;
gid_t *bsd_gidset;		int ngrp, error;
int bsd_gidsetsz, ngrp, error;

cred = td->td_ucred;		ngrp = args->gidsetsize;
bsd_gidset = cred->cr_groups;
bsd_gidsetsz = cred->cr_ngroups;

if ((ngrp = args->gidsetsize) == 0) {		if (ngrp == 0) {
td->td_retval[0] = bsd_gidsetsz;		td->td_retval[0] = cred->cr_ngroups;
return (0);		return (0);
}		}
		if (ngrp < cred->cr_ngroups)
if (ngrp < bsd_gidsetsz)
return (EINVAL);		return (EINVAL);

ngrp = 0;		ngrp = cred->cr_ngroups;
linux_gidset = malloc(bsd_gidsetsz * sizeof(*linux_gidset),
M_LINUX, M_WAITOK);
while (ngrp < bsd_gidsetsz) {
linux_gidset[ngrp] = bsd_gidset[ngrp];
ngrp++;
}

		linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_LINUX, M_WAITOK);
		for (int i = 0; i < ngrp; ++i)
		linux_gidset[i] = cred->cr_groups[i];

error = copyout(linux_gidset, args->grouplist, ngrp * sizeof(l_gid_t));		error = copyout(linux_gidset, args->grouplist, ngrp * sizeof(l_gid_t));
free(linux_gidset, M_LINUX);		free(linux_gidset, M_LINUX);
if (error)
		if (error != 0)
return (error);		return (error);

td->td_retval[0] = ngrp;		td->td_retval[0] = ngrp;
return (0);		return (0);
}		}

static bool		static bool
linux_get_dummy_limit(struct thread td, l_uint resource, struct rlimit rlim)		linux_get_dummy_limit(struct thread td, l_uint resource, struct rlimit rlim)
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