4 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
7 #include <linux/types.h>
8 #include <linux/sched.h>
9 #include <linux/sunrpc/svc.h>
10 #include <linux/sunrpc/svcauth.h>
11 #include <linux/nfsd/nfsd.h>
13 #define CAP_NFSD_MASK (CAP_FS_MASK|CAP_TO_MASK(CAP_SYS_RESOURCE))
15 nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
17 struct svc_cred *cred = &rqstp->rq_cred;
20 if (rqstp->rq_userset)
23 if (exp->ex_flags & NFSEXP_ALLSQUASH) {
24 cred->cr_uid = exp->ex_anon_uid;
25 cred->cr_gid = exp->ex_anon_gid;
26 cred->cr_groups[0] = NOGROUP;
27 } else if (exp->ex_flags & NFSEXP_ROOTSQUASH) {
29 cred->cr_uid = exp->ex_anon_uid;
31 cred->cr_gid = exp->ex_anon_gid;
32 for (i = 0; i < NGROUPS; i++)
33 if (!cred->cr_groups[i])
34 cred->cr_groups[i] = exp->ex_anon_gid;
37 if (cred->cr_uid != (uid_t) -1)
38 current->fsuid = cred->cr_uid;
40 current->fsuid = exp->ex_anon_uid;
41 if (cred->cr_gid != (gid_t) -1)
42 current->fsgid = cred->cr_gid;
44 current->fsgid = exp->ex_anon_gid;
45 for (i = 0; i < NGROUPS; i++) {
46 gid_t group = cred->cr_groups[i];
47 if (group == (gid_t) NOGROUP)
49 current->groups[i] = group;
54 cap_t(current->cap_effective) &= ~CAP_NFSD_MASK;
56 cap_t(current->cap_effective) |= (CAP_NFSD_MASK &
57 current->cap_permitted);
60 rqstp->rq_userset = 1;