HCoop / hcoop / debian / openafs.git / blame
| Commit | Line | Data |
|---|---|---|
| 805e021f CE |
1 | /* |
| 2 | * Copyright 2000, International Business Machines Corporation and others. | |
| 3 | * All Rights Reserved. | |
| 4 | * | |
| 5 | * This software has been released under the terms of the IBM Public | |
| 6 | * License. For details, see the LICENSE file in the top-level source | |
| 7 | * directory or online at http://www.openafs.org/dl/license10.html | |
| 8 | */ | |
| 9 | ||
| 10 | /* | |
| 11 | * afs_xsetgroups (asserts FALSE) | |
| 12 | * setpag (aliased to use_setpag in sysincludes.h) | |
| 13 | */ | |
| 14 | #include <afsconfig.h> | |
| 15 | #include "afs/param.h" | |
| 16 | ||
| 17 | ||
| 18 | #include "afs/sysincludes.h" | |
| 19 | #include "afsincludes.h" | |
| 20 | #include "afs/afs_stats.h" /* statistics */ | |
| 21 | #include "afs/afs_prototypes.h" | |
| 22 | ||
| 23 | int | |
| 24 | afs_xsetgroups(void) | |
| 25 | { | |
| 26 | usr_assert(0); | |
| 27 | return 0; | |
| 28 | } | |
| 29 | ||
| 30 | static int | |
| 31 | afs_getgroups(afs_ucred_t *cred, gid_t * gidset) | |
| 32 | { | |
| 33 | int ngrps, savengrps; | |
| 34 | gid_t *gp; | |
| 35 | ||
| 36 | AFS_STATCNT(afs_getgroups); | |
| 37 | ||
| 38 | gidset[0] = gidset[1] = 0; | |
| 39 | savengrps = ngrps = cred->cr_ngroups; | |
| 40 | gp = cred->cr_groups; | |
| 41 | while (ngrps--) | |
| 42 | *gidset++ = *gp++; | |
| 43 | return savengrps; | |
| 44 | } | |
| 45 | ||
| 46 | ||
| 47 | ||
| 48 | static int | |
| 49 | afs_setgroups(afs_ucred_t **cred, int ngroups, gid_t * gidset, | |
| 50 | int change_parent) | |
| 51 | { | |
| 52 | gid_t *gp; | |
| 53 | ||
| 54 | AFS_STATCNT(afs_setgroups); | |
| 55 | ||
| 56 | if (ngroups > NGROUPS_MAX) | |
| 57 | return EINVAL; | |
| 58 | if (!change_parent) | |
| 59 | *cred = (afs_ucred_t *)crcopy(*cred); | |
| 60 | (*cred)->cr_ngroups = ngroups; | |
| 61 | gp = (*cred)->cr_groups; | |
| 62 | while (ngroups--) | |
| 63 | *gp++ = *gidset++; | |
| 64 | return (0); | |
| 65 | } | |
| 66 | ||
| 67 | int | |
| 68 | usr_setpag(struct usr_ucred **cred, afs_uint32 pagvalue, afs_uint32 * newpag, | |
| 69 | int change_parent) | |
| 70 | { | |
| 71 | gid_t *gidset; | |
| 72 | int ngroups, code; | |
| 73 | int j; | |
| 74 | ||
| 75 | AFS_STATCNT(setpag); | |
| 76 | ||
| 77 | gidset = osi_AllocSmallSpace(AFS_SMALLOCSIZ); | |
| 78 | ngroups = afs_getgroups(*cred, gidset); | |
| 79 | ||
| 80 | if (afs_get_pag_from_groups(gidset[0], gidset[1]) == NOPAG) { | |
| 81 | /* We will have to shift grouplist to make room for pag */ | |
| 82 | if ((sizeof gidset[0]) * (ngroups + 2) > AFS_SMALLOCSIZ) { | |
| 83 | osi_FreeSmallSpace((char *)gidset); | |
| 84 | return (E2BIG); | |
| 85 | } | |
| 86 | for (j = ngroups - 1; j >= 0; j--) { | |
| 87 | gidset[j + 2] = gidset[j]; | |
| 88 | } | |
| 89 | ngroups += 2; | |
| 90 | } | |
| 91 | *newpag = (pagvalue == -1 ? genpag() : pagvalue); | |
| 92 | afs_get_groups_from_pag(*newpag, &gidset[0], &gidset[1]); | |
| 93 | if ((code = afs_setgroups(cred, ngroups, gidset, change_parent))) { | |
| 94 | osi_FreeSmallSpace((char *)gidset); | |
| 95 | return (code); | |
| 96 | } | |
| 97 | osi_FreeSmallSpace((char *)gidset); | |
| 98 | ||
| 99 | return 0; | |
| 100 | } |