Differential D52276 Diff 162242 sys/compat/linux/linux_uid16.c

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sys/compat/linux/linux_uid16.c

Show First 20 Lines • Show All 79 Lines • ▼ Show 20 Lines	linux_lchown16(struct thread td, struct linux_lchown16_args args)

return (kern_fchownat(td, AT_FDCWD, args->path, UIO_USERSPACE,		return (kern_fchownat(td, AT_FDCWD, args->path, UIO_USERSPACE,
CAST_NOCHG(args->uid), CAST_NOCHG(args->gid), AT_SYMLINK_NOFOLLOW));		CAST_NOCHG(args->uid), CAST_NOCHG(args->gid), AT_SYMLINK_NOFOLLOW));
}		}

int		int
linux_setgroups16(struct thread td, struct linux_setgroups16_args args)		linux_setgroups16(struct thread td, struct linux_setgroups16_args args)
{		{
		const int ngrp = args->gidsetsize;
struct ucred newcred, oldcred;		struct ucred newcred, oldcred;
l_gid16_t *linux_gidset;		l_gid16_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->gidset, linux_gidset, ngrp * sizeof(l_gid16_t));		error = copyin(args->gidset, linux_gidset, ngrp * sizeof(l_gid16_t));
if (error) {		if (error) {
LIN_SDT_PROBE1(uid16, linux_setgroups16, copyin_error, error);		LIN_SDT_PROBE1(uid16, linux_setgroups16, copyin_error, error);
free(linux_gidset, M_LINUX);		free(linux_gidset, M_LINUX);
return (error);		return (error);
}		}

newcred = crget();		newcred = crget();
p = td->td_proc;		p = td->td_proc;
PROC_LOCK(p);		PROC_LOCK(p);
oldcred = crcopysafe(p, newcred);		oldcred = crcopysafe(p, newcred);

if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS)) != 0) {		if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS)) != 0) {
PROC_UNLOCK(p);		PROC_UNLOCK(p);
crfree(newcred);		crfree(newcred);
Show All 17 Lines	out:
free(linux_gidset, M_LINUX);		free(linux_gidset, M_LINUX);

return (error);		return (error);
}		}

int		int
linux_getgroups16(struct thread td, struct linux_getgroups16_args args)		linux_getgroups16(struct thread td, struct linux_getgroups16_args args)
{		{
struct ucred *cred;		const struct ucred *const cred = td->td_ucred;
l_gid16_t *linux_gidset;		l_gid16_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->gidset, ngrp * sizeof(l_gid16_t));		error = copyout(linux_gidset, args->gidset, ngrp * sizeof(l_gid16_t));
free(linux_gidset, M_LINUX);		free(linux_gidset, M_LINUX);
if (error) {
		if (error != 0) {
LIN_SDT_PROBE1(uid16, linux_getgroups16, copyout_error, error);		LIN_SDT_PROBE1(uid16, linux_getgroups16, copyout_error, error);
return (error);		return (error);
}		}

td->td_retval[0] = ngrp;		td->td_retval[0] = ngrp;

return (0);		return (0);
}		}
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