projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/fs/nfsd/auth.c | |
| 3 | * | |
| 4 | * Copyright (C) 1995, 1996 Olaf Kirch <[email protected]> | |
| 5 | */ | |
| 6 | ||
| 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> | |
| c7d51402 | 12 | #include <linux/nfsd/export.h> |
| 1da177e4 | 13 | |
| c7d51402 | 14 | int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp) |
| 1269bc69 BF |
15 | { |
| 16 | struct exp_flavor_info *f; | |
| 17 | struct exp_flavor_info *end = exp->ex_flavors + exp->ex_nflavors; | |
| 18 | ||
| 19 | for (f = exp->ex_flavors; f < end; f++) { | |
| 20 | if (f->pseudoflavor == rqstp->rq_flavor) | |
| 21 | return f->flags; | |
| 22 | } | |
| 23 | return exp->ex_flags; | |
| 24 | ||
| 25 | } | |
| 26 | ||
| 1da177e4 LT |
27 | int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp) |
| 28 | { | |
| 54cceebb | 29 | struct svc_cred cred = rqstp->rq_cred; |
| 1da177e4 | 30 | int i; |
| 1269bc69 | 31 | int flags = nfsexp_flags(rqstp, exp); |
| 1da177e4 LT |
32 | int ret; |
| 33 | ||
| 1269bc69 | 34 | if (flags & NFSEXP_ALLSQUASH) { |
| 54cceebb N |
35 | cred.cr_uid = exp->ex_anon_uid; |
| 36 | cred.cr_gid = exp->ex_anon_gid; | |
| 37 | cred.cr_group_info = groups_alloc(0); | |
| 1269bc69 | 38 | } else if (flags & NFSEXP_ROOTSQUASH) { |
| 1da177e4 | 39 | struct group_info *gi; |
| 54cceebb N |
40 | if (!cred.cr_uid) |
| 41 | cred.cr_uid = exp->ex_anon_uid; | |
| 42 | if (!cred.cr_gid) | |
| 43 | cred.cr_gid = exp->ex_anon_gid; | |
| 44 | gi = groups_alloc(cred.cr_group_info->ngroups); | |
| 1da177e4 | 45 | if (gi) |
| 54cceebb N |
46 | for (i = 0; i < cred.cr_group_info->ngroups; i++) { |
| 47 | if (!GROUP_AT(cred.cr_group_info, i)) | |
| 1da177e4 LT |
48 | GROUP_AT(gi, i) = exp->ex_anon_gid; |
| 49 | else | |
| 54cceebb | 50 | GROUP_AT(gi, i) = GROUP_AT(cred.cr_group_info, i); |
| 1da177e4 | 51 | } |
| 54cceebb N |
52 | cred.cr_group_info = gi; |
| 53 | } else | |
| 54 | get_group_info(cred.cr_group_info); | |
| 1da177e4 | 55 | |
| 54cceebb N |
56 | if (cred.cr_uid != (uid_t) -1) |
| 57 | current->fsuid = cred.cr_uid; | |
| 1da177e4 LT |
58 | else |
| 59 | current->fsuid = exp->ex_anon_uid; | |
| 54cceebb N |
60 | if (cred.cr_gid != (gid_t) -1) |
| 61 | current->fsgid = cred.cr_gid; | |
| 1da177e4 LT |
62 | else |
| 63 | current->fsgid = exp->ex_anon_gid; | |
| 64 | ||
| 54cceebb | 65 | if (!cred.cr_group_info) |
| 1da177e4 | 66 | return -ENOMEM; |
| 54cceebb N |
67 | ret = set_current_groups(cred.cr_group_info); |
| 68 | put_group_info(cred.cr_group_info); | |
| 69 | if ((cred.cr_uid)) { | |
| e338d263 AM |
70 | current->cap_effective = |
| 71 | cap_drop_nfsd_set(current->cap_effective); | |
| 1da177e4 | 72 | } else { |
| e338d263 AM |
73 | current->cap_effective = |
| 74 | cap_raise_nfsd_set(current->cap_effective, | |
| 75 | current->cap_permitted); | |
| 1da177e4 LT |
76 | } |
| 77 | return ret; | |
| 78 | } |