191f37dcbSRobert Watson /*- 23c67c23bSRobert Watson * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 391f37dcbSRobert Watson * All rights reserved. 491f37dcbSRobert Watson * 56d878543SRobert Watson * This software was developed by Robert Watson for the TrustedBSD Project. 66d878543SRobert Watson * 791f37dcbSRobert Watson * Redistribution and use in source and binary forms, with or without 891f37dcbSRobert Watson * modification, are permitted provided that the following conditions 991f37dcbSRobert Watson * are met: 1091f37dcbSRobert Watson * 1. Redistributions of source code must retain the above copyright 1191f37dcbSRobert Watson * notice, this list of conditions and the following disclaimer. 1291f37dcbSRobert Watson * 2. Redistributions in binary form must reproduce the above copyright 1391f37dcbSRobert Watson * notice, this list of conditions and the following disclaimer in the 1491f37dcbSRobert Watson * documentation and/or other materials provided with the distribution. 1591f37dcbSRobert Watson * 1691f37dcbSRobert Watson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1791f37dcbSRobert Watson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1891f37dcbSRobert Watson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1991f37dcbSRobert Watson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2091f37dcbSRobert Watson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2191f37dcbSRobert Watson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2291f37dcbSRobert Watson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2391f37dcbSRobert Watson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2491f37dcbSRobert Watson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2591f37dcbSRobert Watson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2691f37dcbSRobert Watson * SUCH DAMAGE. 2791f37dcbSRobert Watson * 2891f37dcbSRobert Watson * $FreeBSD$ 2991f37dcbSRobert Watson */ 3091f37dcbSRobert Watson /* 315293465fSRobert Watson * Developed by the TrustedBSD Project. 325293465fSRobert Watson * Support for POSIX.1e access control lists. 3391f37dcbSRobert Watson */ 3491f37dcbSRobert Watson 35c86ca022SRobert Watson #include "opt_mac.h" 36c86ca022SRobert Watson 3791f37dcbSRobert Watson #include <sys/param.h> 3891f37dcbSRobert Watson #include <sys/systm.h> 3991f37dcbSRobert Watson #include <sys/sysproto.h> 4091f37dcbSRobert Watson #include <sys/kernel.h> 41c86ca022SRobert Watson #include <sys/mac.h> 4291f37dcbSRobert Watson #include <sys/malloc.h> 4391f37dcbSRobert Watson #include <sys/vnode.h> 4491f37dcbSRobert Watson #include <sys/lock.h> 45f708f4d1SMatthew Dillon #include <sys/mutex.h> 4691f37dcbSRobert Watson #include <sys/namei.h> 4791f37dcbSRobert Watson #include <sys/file.h> 4891f37dcbSRobert Watson #include <sys/proc.h> 4991f37dcbSRobert Watson #include <sys/sysent.h> 5091f37dcbSRobert Watson #include <sys/errno.h> 5191f37dcbSRobert Watson #include <sys/stat.h> 5291f37dcbSRobert Watson #include <sys/acl.h> 5391f37dcbSRobert Watson 545293465fSRobert Watson MALLOC_DEFINE(M_ACL, "acl", "access control list"); 5591f37dcbSRobert Watson 56cbeb8402SRobert Watson static int vacl_set_acl(struct thread *td, struct vnode *vp, 57cbeb8402SRobert Watson acl_type_t type, struct acl *aclp); 58cbeb8402SRobert Watson static int vacl_get_acl(struct thread *td, struct vnode *vp, 59cbeb8402SRobert Watson acl_type_t type, struct acl *aclp); 60b40ce416SJulian Elischer static int vacl_aclcheck(struct thread *td, struct vnode *vp, 61b114e127SRobert Watson acl_type_t type, struct acl *aclp); 6291f37dcbSRobert Watson 6391f37dcbSRobert Watson /* 645293465fSRobert Watson * Implement a version of vaccess() that understands POSIX.1e ACL semantics. 655293465fSRobert Watson * Return 0 on success, else an errno value. Should be merged into 665293465fSRobert Watson * vaccess() eventually. 675293465fSRobert Watson */ 685293465fSRobert Watson int 69b114e127SRobert Watson vaccess_acl_posix1e(enum vtype type, uid_t file_uid, gid_t file_gid, 70b114e127SRobert Watson struct acl *acl, mode_t acc_mode, struct ucred *cred, int *privused) 715293465fSRobert Watson { 725293465fSRobert Watson struct acl_entry *acl_other, *acl_mask; 735293465fSRobert Watson mode_t dac_granted; 745293465fSRobert Watson mode_t cap_granted; 755293465fSRobert Watson mode_t acl_mask_granted; 765293465fSRobert Watson int group_matched, i; 775293465fSRobert Watson 785293465fSRobert Watson /* 795293465fSRobert Watson * Look for a normal, non-privileged way to access the file/directory 805293465fSRobert Watson * as requested. If it exists, go with that. Otherwise, attempt 815293465fSRobert Watson * to use privileges granted via cap_granted. In some cases, 825293465fSRobert Watson * which privileges to use may be ambiguous due to "best match", 835293465fSRobert Watson * in which case fall back on first match for the time being. 845293465fSRobert Watson */ 855293465fSRobert Watson if (privused != NULL) 865293465fSRobert Watson *privused = 0; 875293465fSRobert Watson 885293465fSRobert Watson /* 895293465fSRobert Watson * Determine privileges now, but don't apply until we've found 90670f6b2fSRobert Watson * a DAC entry that matches but has failed to allow access. 915293465fSRobert Watson */ 925293465fSRobert Watson #ifndef CAPABILITIES 9344731cabSJohn Baldwin if (suser_cred(cred, PRISON_ROOT) == 0) 94b02aac46SRobert Watson cap_granted = VALLPERM; 955293465fSRobert Watson else 965293465fSRobert Watson cap_granted = 0; 975293465fSRobert Watson #else 985293465fSRobert Watson cap_granted = 0; 995293465fSRobert Watson 1005293465fSRobert Watson if (type == VDIR) { 1015293465fSRobert Watson if ((acc_mode & VEXEC) && !cap_check(cred, NULL, 1025293465fSRobert Watson CAP_DAC_READ_SEARCH, PRISON_ROOT)) 1035293465fSRobert Watson cap_granted |= VEXEC; 1045293465fSRobert Watson } else { 1055293465fSRobert Watson if ((acc_mode & VEXEC) && !cap_check(cred, NULL, 1065293465fSRobert Watson CAP_DAC_EXECUTE, PRISON_ROOT)) 1075293465fSRobert Watson cap_granted |= VEXEC; 1085293465fSRobert Watson } 1095293465fSRobert Watson 1105293465fSRobert Watson if ((acc_mode & VREAD) && !cap_check(cred, NULL, CAP_DAC_READ_SEARCH, 1115293465fSRobert Watson PRISON_ROOT)) 1125293465fSRobert Watson cap_granted |= VREAD; 1135293465fSRobert Watson 114b02aac46SRobert Watson if (((acc_mode & VWRITE) || (acc_mode & VAPPEND)) && 115b02aac46SRobert Watson !cap_check(cred, NULL, CAP_DAC_WRITE, PRISON_ROOT)) 116b02aac46SRobert Watson cap_granted |= (VWRITE | VAPPEND); 1175293465fSRobert Watson 1185293465fSRobert Watson if ((acc_mode & VADMIN) && !cap_check(cred, NULL, CAP_FOWNER, 1195293465fSRobert Watson PRISON_ROOT)) 1205293465fSRobert Watson cap_granted |= VADMIN; 1215293465fSRobert Watson #endif /* CAPABILITIES */ 1225293465fSRobert Watson 1235293465fSRobert Watson /* 124670f6b2fSRobert Watson * The owner matches if the effective uid associated with the 125670f6b2fSRobert Watson * credential matches that of the ACL_USER_OBJ entry. While we're 126670f6b2fSRobert Watson * doing the first scan, also cache the location of the ACL_MASK 127670f6b2fSRobert Watson * and ACL_OTHER entries, preventing some future iterations. 1285293465fSRobert Watson */ 1295293465fSRobert Watson acl_mask = acl_other = NULL; 1305293465fSRobert Watson for (i = 0; i < acl->acl_cnt; i++) { 1315293465fSRobert Watson switch (acl->acl_entry[i].ae_tag) { 1325293465fSRobert Watson case ACL_USER_OBJ: 133b114e127SRobert Watson if (file_uid != cred->cr_uid) 1345293465fSRobert Watson break; 1355293465fSRobert Watson dac_granted = 0; 1365293465fSRobert Watson dac_granted |= VADMIN; 137fb1af1f2SChris D. Faulhaber if (acl->acl_entry[i].ae_perm & ACL_EXECUTE) 1385293465fSRobert Watson dac_granted |= VEXEC; 139fb1af1f2SChris D. Faulhaber if (acl->acl_entry[i].ae_perm & ACL_READ) 1405293465fSRobert Watson dac_granted |= VREAD; 141fb1af1f2SChris D. Faulhaber if (acl->acl_entry[i].ae_perm & ACL_WRITE) 142b02aac46SRobert Watson dac_granted |= (VWRITE | VAPPEND); 1435293465fSRobert Watson if ((acc_mode & dac_granted) == acc_mode) 1445293465fSRobert Watson return (0); 1455293465fSRobert Watson if ((acc_mode & (dac_granted | cap_granted)) == 1465293465fSRobert Watson acc_mode) { 1475293465fSRobert Watson if (privused != NULL) 1485293465fSRobert Watson *privused = 1; 1495293465fSRobert Watson return (0); 1505293465fSRobert Watson } 1515293465fSRobert Watson goto error; 1525293465fSRobert Watson 1535293465fSRobert Watson case ACL_MASK: 1545293465fSRobert Watson acl_mask = &acl->acl_entry[i]; 1555293465fSRobert Watson break; 1565293465fSRobert Watson 1575293465fSRobert Watson case ACL_OTHER: 1585293465fSRobert Watson acl_other = &acl->acl_entry[i]; 1595293465fSRobert Watson break; 1605293465fSRobert Watson 1615293465fSRobert Watson default: 16230171114SPeter Wemm break; 1635293465fSRobert Watson } 1645293465fSRobert Watson } 1655293465fSRobert Watson 1665293465fSRobert Watson /* 167670f6b2fSRobert Watson * An ACL_OTHER entry should always exist in a valid access 168670f6b2fSRobert Watson * ACL. If it doesn't, then generate a serious failure. For now, 169670f6b2fSRobert Watson * this means a debugging message and EPERM, but in the future 170670f6b2fSRobert Watson * should probably be a panic. 171670f6b2fSRobert Watson */ 172670f6b2fSRobert Watson if (acl_other == NULL) { 173670f6b2fSRobert Watson /* 174670f6b2fSRobert Watson * XXX This should never happen 175670f6b2fSRobert Watson */ 176670f6b2fSRobert Watson printf("vaccess_acl_posix1e: ACL_OTHER missing\n"); 177670f6b2fSRobert Watson return (EPERM); 178670f6b2fSRobert Watson } 179670f6b2fSRobert Watson 180670f6b2fSRobert Watson /* 1815293465fSRobert Watson * Checks against ACL_USER, ACL_GROUP_OBJ, and ACL_GROUP fields 1825293465fSRobert Watson * are masked by an ACL_MASK entry, if any. As such, first identify 1835293465fSRobert Watson * the ACL_MASK field, then iterate through identifying potential 1845293465fSRobert Watson * user matches, then group matches. If there is no ACL_MASK, 1855293465fSRobert Watson * assume that the mask allows all requests to succeed. 1865293465fSRobert Watson */ 1875293465fSRobert Watson if (acl_mask != NULL) { 1885293465fSRobert Watson acl_mask_granted = 0; 189fb1af1f2SChris D. Faulhaber if (acl_mask->ae_perm & ACL_EXECUTE) 1905293465fSRobert Watson acl_mask_granted |= VEXEC; 191fb1af1f2SChris D. Faulhaber if (acl_mask->ae_perm & ACL_READ) 1925293465fSRobert Watson acl_mask_granted |= VREAD; 193fb1af1f2SChris D. Faulhaber if (acl_mask->ae_perm & ACL_WRITE) 194b02aac46SRobert Watson acl_mask_granted |= (VWRITE | VAPPEND); 1955293465fSRobert Watson } else 196b02aac46SRobert Watson acl_mask_granted = VEXEC | VREAD | VWRITE | VAPPEND; 1975293465fSRobert Watson 1985293465fSRobert Watson /* 199670f6b2fSRobert Watson * Iterate through user ACL entries. Do checks twice, first 200670f6b2fSRobert Watson * without privilege, and then if a match is found but failed, 201670f6b2fSRobert Watson * a second time with privilege. 2025293465fSRobert Watson */ 2035293465fSRobert Watson 2045293465fSRobert Watson /* 2055293465fSRobert Watson * Check ACL_USER ACL entries. 2065293465fSRobert Watson */ 2075293465fSRobert Watson for (i = 0; i < acl->acl_cnt; i++) { 2085293465fSRobert Watson switch (acl->acl_entry[i].ae_tag) { 2095293465fSRobert Watson case ACL_USER: 2105293465fSRobert Watson if (acl->acl_entry[i].ae_id != cred->cr_uid) 2115293465fSRobert Watson break; 2125293465fSRobert Watson dac_granted = 0; 213fb1af1f2SChris D. Faulhaber if (acl->acl_entry[i].ae_perm & ACL_EXECUTE) 2145293465fSRobert Watson dac_granted |= VEXEC; 215fb1af1f2SChris D. Faulhaber if (acl->acl_entry[i].ae_perm & ACL_READ) 2165293465fSRobert Watson dac_granted |= VREAD; 217fb1af1f2SChris D. Faulhaber if (acl->acl_entry[i].ae_perm & ACL_WRITE) 218b02aac46SRobert Watson dac_granted |= (VWRITE | VAPPEND); 2195293465fSRobert Watson dac_granted &= acl_mask_granted; 2205293465fSRobert Watson if ((acc_mode & dac_granted) == acc_mode) 2215293465fSRobert Watson return (0); 222b114e127SRobert Watson if ((acc_mode & (dac_granted | cap_granted)) != 223b114e127SRobert Watson acc_mode) 224b114e127SRobert Watson goto error; 225b114e127SRobert Watson 2265293465fSRobert Watson if (privused != NULL) 2275293465fSRobert Watson *privused = 1; 2285293465fSRobert Watson return (0); 2295293465fSRobert Watson } 2305293465fSRobert Watson } 2315293465fSRobert Watson 2325293465fSRobert Watson /* 2335293465fSRobert Watson * Group match is best-match, not first-match, so find a 2345293465fSRobert Watson * "best" match. Iterate across, testing each potential group 2355293465fSRobert Watson * match. Make sure we keep track of whether we found a match 236670f6b2fSRobert Watson * or not, so that we know if we should try again with any 237670f6b2fSRobert Watson * available privilege, or if we should move on to ACL_OTHER. 2385293465fSRobert Watson */ 2395293465fSRobert Watson group_matched = 0; 2405293465fSRobert Watson for (i = 0; i < acl->acl_cnt; i++) { 2415293465fSRobert Watson switch (acl->acl_entry[i].ae_tag) { 2425293465fSRobert Watson case ACL_GROUP_OBJ: 243e15480f8SThomas Moestl if (!groupmember(file_gid, cred)) 244b114e127SRobert Watson break; 2455293465fSRobert Watson dac_granted = 0; 246fb1af1f2SChris D. Faulhaber if (acl->acl_entry[i].ae_perm & ACL_EXECUTE) 2475293465fSRobert Watson dac_granted |= VEXEC; 248fb1af1f2SChris D. Faulhaber if (acl->acl_entry[i].ae_perm & ACL_READ) 2495293465fSRobert Watson dac_granted |= VREAD; 250fb1af1f2SChris D. Faulhaber if (acl->acl_entry[i].ae_perm & ACL_WRITE) 251b02aac46SRobert Watson dac_granted |= (VWRITE | VAPPEND); 2525293465fSRobert Watson dac_granted &= acl_mask_granted; 2535293465fSRobert Watson 2545293465fSRobert Watson if ((acc_mode & dac_granted) == acc_mode) 2555293465fSRobert Watson return (0); 2565293465fSRobert Watson 2575293465fSRobert Watson group_matched = 1; 258b114e127SRobert Watson break; 259b114e127SRobert Watson 260b114e127SRobert Watson case ACL_GROUP: 261b114e127SRobert Watson if (!groupmember(acl->acl_entry[i].ae_id, cred)) 262b114e127SRobert Watson break; 263b114e127SRobert Watson dac_granted = 0; 264b114e127SRobert Watson if (acl->acl_entry[i].ae_perm & ACL_EXECUTE) 265b114e127SRobert Watson dac_granted |= VEXEC; 266b114e127SRobert Watson if (acl->acl_entry[i].ae_perm & ACL_READ) 267b114e127SRobert Watson dac_granted |= VREAD; 268b114e127SRobert Watson if (acl->acl_entry[i].ae_perm & ACL_WRITE) 269b02aac46SRobert Watson dac_granted |= (VWRITE | VAPPEND); 270b114e127SRobert Watson dac_granted &= acl_mask_granted; 271b114e127SRobert Watson 272b114e127SRobert Watson if ((acc_mode & dac_granted) == acc_mode) 273b114e127SRobert Watson return (0); 274b114e127SRobert Watson 275b114e127SRobert Watson group_matched = 1; 276b114e127SRobert Watson break; 277b114e127SRobert Watson 2785293465fSRobert Watson default: 27930171114SPeter Wemm break; 2805293465fSRobert Watson } 2815293465fSRobert Watson } 2825293465fSRobert Watson 2835293465fSRobert Watson if (group_matched == 1) { 2845293465fSRobert Watson /* 2855293465fSRobert Watson * There was a match, but it did not grant rights via 2865293465fSRobert Watson * pure DAC. Try again, this time with privilege. 2875293465fSRobert Watson */ 2885293465fSRobert Watson for (i = 0; i < acl->acl_cnt; i++) { 2895293465fSRobert Watson switch (acl->acl_entry[i].ae_tag) { 2905293465fSRobert Watson case ACL_GROUP_OBJ: 29146157a65SRobert Watson if (!groupmember(file_gid, cred)) 292b114e127SRobert Watson break; 2935293465fSRobert Watson dac_granted = 0; 294b114e127SRobert Watson if (acl->acl_entry[i].ae_perm & ACL_EXECUTE) 2955293465fSRobert Watson dac_granted |= VEXEC; 296b114e127SRobert Watson if (acl->acl_entry[i].ae_perm & ACL_READ) 2975293465fSRobert Watson dac_granted |= VREAD; 298b114e127SRobert Watson if (acl->acl_entry[i].ae_perm & ACL_WRITE) 299b02aac46SRobert Watson dac_granted |= (VWRITE | VAPPEND); 3005293465fSRobert Watson dac_granted &= acl_mask_granted; 301b114e127SRobert Watson 302b114e127SRobert Watson if ((acc_mode & (dac_granted | cap_granted)) != 303b114e127SRobert Watson acc_mode) 304b114e127SRobert Watson break; 305b114e127SRobert Watson 3065293465fSRobert Watson if (privused != NULL) 3075293465fSRobert Watson *privused = 1; 3085293465fSRobert Watson return (0); 309b114e127SRobert Watson 310b114e127SRobert Watson case ACL_GROUP: 311b114e127SRobert Watson if (!groupmember(acl->acl_entry[i].ae_id, 312b114e127SRobert Watson cred)) 313b114e127SRobert Watson break; 314b114e127SRobert Watson dac_granted = 0; 315b114e127SRobert Watson if (acl->acl_entry[i].ae_perm & ACL_EXECUTE) 316b114e127SRobert Watson dac_granted |= VEXEC; 317b114e127SRobert Watson if (acl->acl_entry[i].ae_perm & ACL_READ) 318b114e127SRobert Watson dac_granted |= VREAD; 319b114e127SRobert Watson if (acl->acl_entry[i].ae_perm & ACL_WRITE) 320b02aac46SRobert Watson dac_granted |= (VWRITE | VAPPEND); 321b114e127SRobert Watson dac_granted &= acl_mask_granted; 322b114e127SRobert Watson 323b114e127SRobert Watson if ((acc_mode & (dac_granted | cap_granted)) != 324b114e127SRobert Watson acc_mode) 325b114e127SRobert Watson break; 326b114e127SRobert Watson 327b114e127SRobert Watson if (privused != NULL) 328b114e127SRobert Watson *privused = 1; 329b114e127SRobert Watson return (0); 330b114e127SRobert Watson 3315293465fSRobert Watson default: 33230171114SPeter Wemm break; 3335293465fSRobert Watson } 3345293465fSRobert Watson } 3355293465fSRobert Watson /* 3365293465fSRobert Watson * Even with privilege, group membership was not sufficient. 3375293465fSRobert Watson * Return failure. 3385293465fSRobert Watson */ 3395293465fSRobert Watson goto error; 3405293465fSRobert Watson } 3415293465fSRobert Watson 3425293465fSRobert Watson /* 3435293465fSRobert Watson * Fall back on ACL_OTHER. ACL_MASK is not applied to ACL_OTHER. 3445293465fSRobert Watson */ 3455293465fSRobert Watson dac_granted = 0; 346fb1af1f2SChris D. Faulhaber if (acl_other->ae_perm & ACL_EXECUTE) 3475293465fSRobert Watson dac_granted |= VEXEC; 348fb1af1f2SChris D. Faulhaber if (acl_other->ae_perm & ACL_READ) 3495293465fSRobert Watson dac_granted |= VREAD; 350fb1af1f2SChris D. Faulhaber if (acl_other->ae_perm & ACL_WRITE) 351b02aac46SRobert Watson dac_granted |= (VWRITE | VAPPEND); 3525293465fSRobert Watson 3535293465fSRobert Watson if ((acc_mode & dac_granted) == acc_mode) 3545293465fSRobert Watson return (0); 3555293465fSRobert Watson if ((acc_mode & (dac_granted | cap_granted)) == acc_mode) { 3565293465fSRobert Watson if (privused != NULL) 3575293465fSRobert Watson *privused = 1; 3585293465fSRobert Watson return (0); 3595293465fSRobert Watson } 3605293465fSRobert Watson 3615293465fSRobert Watson error: 3625293465fSRobert Watson return ((acc_mode & VADMIN) ? EPERM : EACCES); 3635293465fSRobert Watson } 3645293465fSRobert Watson 3655293465fSRobert Watson /* 3665293465fSRobert Watson * For the purposes of filesystems maintaining the _OBJ entries in an 3675293465fSRobert Watson * inode with a mode_t field, this routine converts a mode_t entry 3685293465fSRobert Watson * to an acl_perm_t. 3695293465fSRobert Watson */ 3705293465fSRobert Watson acl_perm_t 3715293465fSRobert Watson acl_posix1e_mode_to_perm(acl_tag_t tag, mode_t mode) 3725293465fSRobert Watson { 3735293465fSRobert Watson acl_perm_t perm = 0; 3745293465fSRobert Watson 3755293465fSRobert Watson switch(tag) { 3765293465fSRobert Watson case ACL_USER_OBJ: 3775293465fSRobert Watson if (mode & S_IXUSR) 378fb1af1f2SChris D. Faulhaber perm |= ACL_EXECUTE; 3795293465fSRobert Watson if (mode & S_IRUSR) 380fb1af1f2SChris D. Faulhaber perm |= ACL_READ; 3815293465fSRobert Watson if (mode & S_IWUSR) 382fb1af1f2SChris D. Faulhaber perm |= ACL_WRITE; 3835293465fSRobert Watson return (perm); 3845293465fSRobert Watson 3855293465fSRobert Watson case ACL_GROUP_OBJ: 3865293465fSRobert Watson if (mode & S_IXGRP) 387fb1af1f2SChris D. Faulhaber perm |= ACL_EXECUTE; 3885293465fSRobert Watson if (mode & S_IRGRP) 389fb1af1f2SChris D. Faulhaber perm |= ACL_READ; 3905293465fSRobert Watson if (mode & S_IWGRP) 391fb1af1f2SChris D. Faulhaber perm |= ACL_WRITE; 3925293465fSRobert Watson return (perm); 3935293465fSRobert Watson 3945293465fSRobert Watson case ACL_OTHER: 3955293465fSRobert Watson if (mode & S_IXOTH) 396fb1af1f2SChris D. Faulhaber perm |= ACL_EXECUTE; 3975293465fSRobert Watson if (mode & S_IROTH) 398fb1af1f2SChris D. Faulhaber perm |= ACL_READ; 3995293465fSRobert Watson if (mode & S_IWOTH) 400fb1af1f2SChris D. Faulhaber perm |= ACL_WRITE; 4015293465fSRobert Watson return (perm); 4025293465fSRobert Watson 4035293465fSRobert Watson default: 4045293465fSRobert Watson printf("acl_posix1e_mode_to_perm: invalid tag (%d)\n", tag); 4055293465fSRobert Watson return (0); 4065293465fSRobert Watson } 4075293465fSRobert Watson } 4085293465fSRobert Watson 4095293465fSRobert Watson /* 4105293465fSRobert Watson * Given inode information (uid, gid, mode), return an acl entry of the 4115293465fSRobert Watson * appropriate type. 4125293465fSRobert Watson */ 4135293465fSRobert Watson struct acl_entry 4145293465fSRobert Watson acl_posix1e_mode_to_entry(acl_tag_t tag, uid_t uid, gid_t gid, mode_t mode) 4155293465fSRobert Watson { 4165293465fSRobert Watson struct acl_entry acl_entry; 4175293465fSRobert Watson 4185293465fSRobert Watson acl_entry.ae_tag = tag; 4195293465fSRobert Watson acl_entry.ae_perm = acl_posix1e_mode_to_perm(tag, mode); 4205293465fSRobert Watson switch(tag) { 4215293465fSRobert Watson case ACL_USER_OBJ: 4225293465fSRobert Watson acl_entry.ae_id = uid; 4235293465fSRobert Watson break; 4245293465fSRobert Watson 4255293465fSRobert Watson case ACL_GROUP_OBJ: 4265293465fSRobert Watson acl_entry.ae_id = gid; 4275293465fSRobert Watson break; 4285293465fSRobert Watson 4295293465fSRobert Watson case ACL_OTHER: 430dbb14f98SChris D. Faulhaber acl_entry.ae_id = ACL_UNDEFINED_ID; 4315293465fSRobert Watson break; 4325293465fSRobert Watson 4335293465fSRobert Watson default: 434dbb14f98SChris D. Faulhaber acl_entry.ae_id = ACL_UNDEFINED_ID; 4355293465fSRobert Watson printf("acl_posix1e_mode_to_entry: invalid tag (%d)\n", tag); 4365293465fSRobert Watson } 4375293465fSRobert Watson 4385293465fSRobert Watson return (acl_entry); 4395293465fSRobert Watson } 4405293465fSRobert Watson 4415293465fSRobert Watson /* 4425293465fSRobert Watson * Utility function to generate a file mode given appropriate ACL entries. 4435293465fSRobert Watson */ 4445293465fSRobert Watson mode_t 4455293465fSRobert Watson acl_posix1e_perms_to_mode(struct acl_entry *acl_user_obj_entry, 4465293465fSRobert Watson struct acl_entry *acl_group_obj_entry, struct acl_entry *acl_other_entry) 4475293465fSRobert Watson { 4485293465fSRobert Watson mode_t mode; 4495293465fSRobert Watson 4505293465fSRobert Watson mode = 0; 451fb1af1f2SChris D. Faulhaber if (acl_user_obj_entry->ae_perm & ACL_EXECUTE) 4525293465fSRobert Watson mode |= S_IXUSR; 453fb1af1f2SChris D. Faulhaber if (acl_user_obj_entry->ae_perm & ACL_READ) 4545293465fSRobert Watson mode |= S_IRUSR; 455fb1af1f2SChris D. Faulhaber if (acl_user_obj_entry->ae_perm & ACL_WRITE) 4565293465fSRobert Watson mode |= S_IWUSR; 457fb1af1f2SChris D. Faulhaber if (acl_group_obj_entry->ae_perm & ACL_EXECUTE) 4585293465fSRobert Watson mode |= S_IXGRP; 459fb1af1f2SChris D. Faulhaber if (acl_group_obj_entry->ae_perm & ACL_READ) 4605293465fSRobert Watson mode |= S_IRGRP; 461fb1af1f2SChris D. Faulhaber if (acl_group_obj_entry->ae_perm & ACL_WRITE) 4625293465fSRobert Watson mode |= S_IWGRP; 463fb1af1f2SChris D. Faulhaber if (acl_other_entry->ae_perm & ACL_EXECUTE) 4645293465fSRobert Watson mode |= S_IXOTH; 465fb1af1f2SChris D. Faulhaber if (acl_other_entry->ae_perm & ACL_READ) 4665293465fSRobert Watson mode |= S_IROTH; 467fb1af1f2SChris D. Faulhaber if (acl_other_entry->ae_perm & ACL_WRITE) 4685293465fSRobert Watson mode |= S_IWOTH; 4695293465fSRobert Watson 4705293465fSRobert Watson return (mode); 4715293465fSRobert Watson } 4725293465fSRobert Watson 4735293465fSRobert Watson /* 4745293465fSRobert Watson * Perform a syntactic check of the ACL, sufficient to allow an 4755293465fSRobert Watson * implementing filesystem to determine if it should accept this and 4765293465fSRobert Watson * rely on the POSIX.1e ACL properties. 4775293465fSRobert Watson */ 4785293465fSRobert Watson int 4795293465fSRobert Watson acl_posix1e_check(struct acl *acl) 4805293465fSRobert Watson { 4815293465fSRobert Watson int num_acl_user_obj, num_acl_user, num_acl_group_obj, num_acl_group; 4825293465fSRobert Watson int num_acl_mask, num_acl_other, i; 4835293465fSRobert Watson 4845293465fSRobert Watson /* 4855293465fSRobert Watson * Verify that the number of entries does not exceed the maximum 4865293465fSRobert Watson * defined for acl_t. 4875293465fSRobert Watson * Verify that the correct number of various sorts of ae_tags are 4885293465fSRobert Watson * present: 4895293465fSRobert Watson * Exactly one ACL_USER_OBJ 4905293465fSRobert Watson * Exactly one ACL_GROUP_OBJ 4915293465fSRobert Watson * Exactly one ACL_OTHER 4925293465fSRobert Watson * If any ACL_USER or ACL_GROUP entries appear, then exactly one 4935293465fSRobert Watson * ACL_MASK entry must also appear. 4945293465fSRobert Watson * Verify that all ae_perm entries are in ACL_PERM_BITS. 4955293465fSRobert Watson * Verify all ae_tag entries are understood by this implementation. 4965293465fSRobert Watson * Note: Does not check for uniqueness of qualifier (ae_id) field. 4975293465fSRobert Watson */ 4985293465fSRobert Watson num_acl_user_obj = num_acl_user = num_acl_group_obj = num_acl_group = 4995293465fSRobert Watson num_acl_mask = num_acl_other = 0; 5005293465fSRobert Watson if (acl->acl_cnt > ACL_MAX_ENTRIES || acl->acl_cnt < 0) 5015293465fSRobert Watson return (EINVAL); 5025293465fSRobert Watson for (i = 0; i < acl->acl_cnt; i++) { 5035293465fSRobert Watson /* 5045293465fSRobert Watson * Check for a valid tag. 5055293465fSRobert Watson */ 5065293465fSRobert Watson switch(acl->acl_entry[i].ae_tag) { 5075293465fSRobert Watson case ACL_USER_OBJ: 508b114e127SRobert Watson acl->acl_entry[i].ae_id = ACL_UNDEFINED_ID; /* XXX */ 509b114e127SRobert Watson if (acl->acl_entry[i].ae_id != ACL_UNDEFINED_ID) 510b114e127SRobert Watson return (EINVAL); 5115293465fSRobert Watson num_acl_user_obj++; 5125293465fSRobert Watson break; 5135293465fSRobert Watson case ACL_GROUP_OBJ: 514b114e127SRobert Watson acl->acl_entry[i].ae_id = ACL_UNDEFINED_ID; /* XXX */ 515b114e127SRobert Watson if (acl->acl_entry[i].ae_id != ACL_UNDEFINED_ID) 516b114e127SRobert Watson return (EINVAL); 5175293465fSRobert Watson num_acl_group_obj++; 5185293465fSRobert Watson break; 5195293465fSRobert Watson case ACL_USER: 520b114e127SRobert Watson if (acl->acl_entry[i].ae_id == ACL_UNDEFINED_ID) 521b114e127SRobert Watson return (EINVAL); 5225293465fSRobert Watson num_acl_user++; 5235293465fSRobert Watson break; 5245293465fSRobert Watson case ACL_GROUP: 525b114e127SRobert Watson if (acl->acl_entry[i].ae_id == ACL_UNDEFINED_ID) 526b114e127SRobert Watson return (EINVAL); 5275293465fSRobert Watson num_acl_group++; 5285293465fSRobert Watson break; 5295293465fSRobert Watson case ACL_OTHER: 530b114e127SRobert Watson acl->acl_entry[i].ae_id = ACL_UNDEFINED_ID; /* XXX */ 531b114e127SRobert Watson if (acl->acl_entry[i].ae_id != ACL_UNDEFINED_ID) 532b114e127SRobert Watson return (EINVAL); 5335293465fSRobert Watson num_acl_other++; 5345293465fSRobert Watson break; 5355293465fSRobert Watson case ACL_MASK: 536b114e127SRobert Watson acl->acl_entry[i].ae_id = ACL_UNDEFINED_ID; /* XXX */ 537b114e127SRobert Watson if (acl->acl_entry[i].ae_id != ACL_UNDEFINED_ID) 538b114e127SRobert Watson return (EINVAL); 5395293465fSRobert Watson num_acl_mask++; 5405293465fSRobert Watson break; 5415293465fSRobert Watson default: 5425293465fSRobert Watson return (EINVAL); 5435293465fSRobert Watson } 5445293465fSRobert Watson /* 5455293465fSRobert Watson * Check for valid perm entries. 5465293465fSRobert Watson */ 5475293465fSRobert Watson if ((acl->acl_entry[i].ae_perm | ACL_PERM_BITS) != 5485293465fSRobert Watson ACL_PERM_BITS) 5495293465fSRobert Watson return (EINVAL); 5505293465fSRobert Watson } 5515293465fSRobert Watson if ((num_acl_user_obj != 1) || (num_acl_group_obj != 1) || 5525293465fSRobert Watson (num_acl_other != 1) || (num_acl_mask != 0 && num_acl_mask != 1)) 5535293465fSRobert Watson return (EINVAL); 5545293465fSRobert Watson if (((num_acl_group != 0) || (num_acl_user != 0)) && 5555293465fSRobert Watson (num_acl_mask != 1)) 5565293465fSRobert Watson return (EINVAL); 5575293465fSRobert Watson return (0); 5585293465fSRobert Watson } 5595293465fSRobert Watson 5605293465fSRobert Watson /* 56191f37dcbSRobert Watson * These calls wrap the real vnode operations, and are called by the 56291f37dcbSRobert Watson * syscall code once the syscall has converted the path or file 56391f37dcbSRobert Watson * descriptor to a vnode (unlocked). The aclp pointer is assumed 56491f37dcbSRobert Watson * still to point to userland, so this should not be consumed within 56591f37dcbSRobert Watson * the kernel except by syscall code. Other code should directly 56691f37dcbSRobert Watson * invoke VOP_{SET,GET}ACL. 56791f37dcbSRobert Watson */ 56891f37dcbSRobert Watson 56991f37dcbSRobert Watson /* 57091f37dcbSRobert Watson * Given a vnode, set its ACL. 57191f37dcbSRobert Watson */ 57291f37dcbSRobert Watson static int 573b40ce416SJulian Elischer vacl_set_acl(struct thread *td, struct vnode *vp, acl_type_t type, 57491f37dcbSRobert Watson struct acl *aclp) 57591f37dcbSRobert Watson { 57691f37dcbSRobert Watson struct acl inkernacl; 5774e1123c7SRobert Watson struct mount *mp; 57891f37dcbSRobert Watson int error; 57991f37dcbSRobert Watson 58091f37dcbSRobert Watson error = copyin(aclp, &inkernacl, sizeof(struct acl)); 58191f37dcbSRobert Watson if (error) 58291f37dcbSRobert Watson return(error); 5834e1123c7SRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 5844e1123c7SRobert Watson if (error != 0) 5854e1123c7SRobert Watson return (error); 586a854ed98SJohn Baldwin VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE); 587b40ce416SJulian Elischer vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 588c86ca022SRobert Watson #ifdef MAC 589c86ca022SRobert Watson error = mac_check_vnode_setacl(td->td_ucred, vp, type, &inkernacl); 590c86ca022SRobert Watson if (error != 0) 591c86ca022SRobert Watson goto out; 592c86ca022SRobert Watson #endif 593a854ed98SJohn Baldwin error = VOP_SETACL(vp, type, &inkernacl, td->td_ucred, td); 594c86ca022SRobert Watson #ifdef MAC 595c86ca022SRobert Watson out: 596c86ca022SRobert Watson #endif 597b40ce416SJulian Elischer VOP_UNLOCK(vp, 0, td); 5984e1123c7SRobert Watson vn_finished_write(mp); 59991f37dcbSRobert Watson return(error); 60091f37dcbSRobert Watson } 60191f37dcbSRobert Watson 60291f37dcbSRobert Watson /* 60391f37dcbSRobert Watson * Given a vnode, get its ACL. 60491f37dcbSRobert Watson */ 60591f37dcbSRobert Watson static int 606b40ce416SJulian Elischer vacl_get_acl(struct thread *td, struct vnode *vp, acl_type_t type, 60791f37dcbSRobert Watson struct acl *aclp) 60891f37dcbSRobert Watson { 60991f37dcbSRobert Watson struct acl inkernelacl; 61091f37dcbSRobert Watson int error; 61191f37dcbSRobert Watson 612a854ed98SJohn Baldwin VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE); 613b40ce416SJulian Elischer vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 614c86ca022SRobert Watson #ifdef MAC 615c86ca022SRobert Watson error = mac_check_vnode_getacl(td->td_ucred, vp, type); 616c86ca022SRobert Watson if (error != 0) 617c86ca022SRobert Watson goto out; 618c86ca022SRobert Watson #endif 619a854ed98SJohn Baldwin error = VOP_GETACL(vp, type, &inkernelacl, td->td_ucred, td); 620c86ca022SRobert Watson #ifdef MAC 621c86ca022SRobert Watson out: 622c86ca022SRobert Watson #endif 623b40ce416SJulian Elischer VOP_UNLOCK(vp, 0, td); 62491f37dcbSRobert Watson if (error == 0) 62591f37dcbSRobert Watson error = copyout(&inkernelacl, aclp, sizeof(struct acl)); 62691f37dcbSRobert Watson return (error); 62791f37dcbSRobert Watson } 62891f37dcbSRobert Watson 62991f37dcbSRobert Watson /* 63091f37dcbSRobert Watson * Given a vnode, delete its ACL. 63191f37dcbSRobert Watson */ 63291f37dcbSRobert Watson static int 633b40ce416SJulian Elischer vacl_delete(struct thread *td, struct vnode *vp, acl_type_t type) 63491f37dcbSRobert Watson { 6354e1123c7SRobert Watson struct mount *mp; 63691f37dcbSRobert Watson int error; 63791f37dcbSRobert Watson 6384e1123c7SRobert Watson error = vn_start_write(vp, &mp, V_WAIT | PCATCH); 6394e1123c7SRobert Watson if (error) 6404e1123c7SRobert Watson return (error); 641a854ed98SJohn Baldwin VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE); 642b40ce416SJulian Elischer vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 643c86ca022SRobert Watson #ifdef MAC 644c86ca022SRobert Watson error = mac_check_vnode_deleteacl(td->td_ucred, vp, type); 645c86ca022SRobert Watson if (error) 646c86ca022SRobert Watson goto out; 647c86ca022SRobert Watson #endif 648c86ca022SRobert Watson error = VOP_SETACL(vp, type, 0, td->td_ucred, td); 649c86ca022SRobert Watson #ifdef MAC 650c86ca022SRobert Watson out: 651c86ca022SRobert Watson #endif 652b40ce416SJulian Elischer VOP_UNLOCK(vp, 0, td); 6534e1123c7SRobert Watson vn_finished_write(mp); 65491f37dcbSRobert Watson return (error); 65591f37dcbSRobert Watson } 65691f37dcbSRobert Watson 65791f37dcbSRobert Watson /* 65891f37dcbSRobert Watson * Given a vnode, check whether an ACL is appropriate for it 65991f37dcbSRobert Watson */ 66091f37dcbSRobert Watson static int 661b40ce416SJulian Elischer vacl_aclcheck(struct thread *td, struct vnode *vp, acl_type_t type, 66291f37dcbSRobert Watson struct acl *aclp) 66391f37dcbSRobert Watson { 66491f37dcbSRobert Watson struct acl inkernelacl; 66591f37dcbSRobert Watson int error; 66691f37dcbSRobert Watson 66791f37dcbSRobert Watson error = copyin(aclp, &inkernelacl, sizeof(struct acl)); 66891f37dcbSRobert Watson if (error) 66991f37dcbSRobert Watson return(error); 670a854ed98SJohn Baldwin error = VOP_ACLCHECK(vp, type, &inkernelacl, td->td_ucred, td); 67191f37dcbSRobert Watson return (error); 67291f37dcbSRobert Watson } 67391f37dcbSRobert Watson 67491f37dcbSRobert Watson /* 67591f37dcbSRobert Watson * syscalls -- convert the path/fd to a vnode, and call vacl_whatever. 67691f37dcbSRobert Watson * Don't need to lock, as the vacl_ code will get/release any locks 67791f37dcbSRobert Watson * required. 67891f37dcbSRobert Watson */ 67991f37dcbSRobert Watson 68091f37dcbSRobert Watson /* 68191f37dcbSRobert Watson * Given a file path, get an ACL for it 682f708f4d1SMatthew Dillon * 683f708f4d1SMatthew Dillon * MPSAFE 68491f37dcbSRobert Watson */ 68591f37dcbSRobert Watson int 686b40ce416SJulian Elischer __acl_get_file(struct thread *td, struct __acl_get_file_args *uap) 68791f37dcbSRobert Watson { 68891f37dcbSRobert Watson struct nameidata nd; 68991f37dcbSRobert Watson int error; 69091f37dcbSRobert Watson 691f708f4d1SMatthew Dillon mtx_lock(&Giant); 692d1e405c5SAlfred Perlstein NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td); 69391f37dcbSRobert Watson error = namei(&nd); 694f708f4d1SMatthew Dillon if (error == 0) { 695f97182acSAlfred Perlstein error = vacl_get_acl(td, nd.ni_vp, uap->type, uap->aclp); 69691f37dcbSRobert Watson NDFREE(&nd, 0); 697f708f4d1SMatthew Dillon } 698f708f4d1SMatthew Dillon mtx_unlock(&Giant); 69991f37dcbSRobert Watson return (error); 70091f37dcbSRobert Watson } 70191f37dcbSRobert Watson 70291f37dcbSRobert Watson /* 7033c67c23bSRobert Watson * Given a file path, get an ACL for it; don't follow links. 7043c67c23bSRobert Watson * 7053c67c23bSRobert Watson * MPSAFE 7063c67c23bSRobert Watson */ 7073c67c23bSRobert Watson int 7083c67c23bSRobert Watson __acl_get_link(struct thread *td, struct __acl_get_link_args *uap) 7093c67c23bSRobert Watson { 7103c67c23bSRobert Watson struct nameidata nd; 7113c67c23bSRobert Watson int error; 7123c67c23bSRobert Watson 7133c67c23bSRobert Watson mtx_lock(&Giant); 7143c67c23bSRobert Watson NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td); 7153c67c23bSRobert Watson error = namei(&nd); 7163c67c23bSRobert Watson if (error == 0) { 7173c67c23bSRobert Watson error = vacl_get_acl(td, nd.ni_vp, uap->type, uap->aclp); 7183c67c23bSRobert Watson NDFREE(&nd, 0); 7193c67c23bSRobert Watson } 7203c67c23bSRobert Watson mtx_unlock(&Giant); 7213c67c23bSRobert Watson return (error); 7223c67c23bSRobert Watson } 7233c67c23bSRobert Watson 7243c67c23bSRobert Watson /* 72591f37dcbSRobert Watson * Given a file path, set an ACL for it 726f708f4d1SMatthew Dillon * 727f708f4d1SMatthew Dillon * MPSAFE 72891f37dcbSRobert Watson */ 72991f37dcbSRobert Watson int 730b40ce416SJulian Elischer __acl_set_file(struct thread *td, struct __acl_set_file_args *uap) 73191f37dcbSRobert Watson { 73291f37dcbSRobert Watson struct nameidata nd; 73391f37dcbSRobert Watson int error; 73491f37dcbSRobert Watson 735f708f4d1SMatthew Dillon mtx_lock(&Giant); 736d1e405c5SAlfred Perlstein NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td); 73791f37dcbSRobert Watson error = namei(&nd); 738f708f4d1SMatthew Dillon if (error == 0) { 739f97182acSAlfred Perlstein error = vacl_set_acl(td, nd.ni_vp, uap->type, uap->aclp); 74091f37dcbSRobert Watson NDFREE(&nd, 0); 741f708f4d1SMatthew Dillon } 742f708f4d1SMatthew Dillon mtx_unlock(&Giant); 74391f37dcbSRobert Watson return (error); 74491f37dcbSRobert Watson } 74591f37dcbSRobert Watson 74691f37dcbSRobert Watson /* 7473c67c23bSRobert Watson * Given a file path, set an ACL for it; don't follow links. 7483c67c23bSRobert Watson * 7493c67c23bSRobert Watson * MPSAFE 7503c67c23bSRobert Watson */ 7513c67c23bSRobert Watson int 7523c67c23bSRobert Watson __acl_set_link(struct thread *td, struct __acl_set_link_args *uap) 7533c67c23bSRobert Watson { 7543c67c23bSRobert Watson struct nameidata nd; 7553c67c23bSRobert Watson int error; 7563c67c23bSRobert Watson 7573c67c23bSRobert Watson mtx_lock(&Giant); 7583c67c23bSRobert Watson NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td); 7593c67c23bSRobert Watson error = namei(&nd); 7603c67c23bSRobert Watson if (error == 0) { 7613c67c23bSRobert Watson error = vacl_set_acl(td, nd.ni_vp, uap->type, uap->aclp); 7623c67c23bSRobert Watson NDFREE(&nd, 0); 7633c67c23bSRobert Watson } 7643c67c23bSRobert Watson mtx_unlock(&Giant); 7653c67c23bSRobert Watson return (error); 7663c67c23bSRobert Watson } 7673c67c23bSRobert Watson 7683c67c23bSRobert Watson /* 76991f37dcbSRobert Watson * Given a file descriptor, get an ACL for it 770f708f4d1SMatthew Dillon * 771f708f4d1SMatthew Dillon * MPSAFE 77291f37dcbSRobert Watson */ 77391f37dcbSRobert Watson int 774b40ce416SJulian Elischer __acl_get_fd(struct thread *td, struct __acl_get_fd_args *uap) 77591f37dcbSRobert Watson { 77691f37dcbSRobert Watson struct file *fp; 77791f37dcbSRobert Watson int error; 77891f37dcbSRobert Watson 779f708f4d1SMatthew Dillon mtx_lock(&Giant); 780d1e405c5SAlfred Perlstein error = getvnode(td->td_proc->p_fd, uap->filedes, &fp); 781f708f4d1SMatthew Dillon if (error == 0) { 782b40ce416SJulian Elischer error = vacl_get_acl(td, (struct vnode *)fp->f_data, 783d1e405c5SAlfred Perlstein uap->type, uap->aclp); 784426da3bcSAlfred Perlstein fdrop(fp, td); 785f708f4d1SMatthew Dillon } 786f708f4d1SMatthew Dillon mtx_unlock(&Giant); 78791f37dcbSRobert Watson return (error); 78891f37dcbSRobert Watson } 78991f37dcbSRobert Watson 79091f37dcbSRobert Watson /* 79191f37dcbSRobert Watson * Given a file descriptor, set an ACL for it 792f708f4d1SMatthew Dillon * 793f708f4d1SMatthew Dillon * MPSAFE 79491f37dcbSRobert Watson */ 79591f37dcbSRobert Watson int 796b40ce416SJulian Elischer __acl_set_fd(struct thread *td, struct __acl_set_fd_args *uap) 79791f37dcbSRobert Watson { 79891f37dcbSRobert Watson struct file *fp; 79991f37dcbSRobert Watson int error; 80091f37dcbSRobert Watson 801f708f4d1SMatthew Dillon mtx_lock(&Giant); 802d1e405c5SAlfred Perlstein error = getvnode(td->td_proc->p_fd, uap->filedes, &fp); 803f708f4d1SMatthew Dillon if (error == 0) { 804b40ce416SJulian Elischer error = vacl_set_acl(td, (struct vnode *)fp->f_data, 805d1e405c5SAlfred Perlstein uap->type, uap->aclp); 806426da3bcSAlfred Perlstein fdrop(fp, td); 807f708f4d1SMatthew Dillon } 808f708f4d1SMatthew Dillon mtx_unlock(&Giant); 80991f37dcbSRobert Watson return (error); 81091f37dcbSRobert Watson } 81191f37dcbSRobert Watson 81291f37dcbSRobert Watson /* 81391f37dcbSRobert Watson * Given a file path, delete an ACL from it. 814f708f4d1SMatthew Dillon * 815f708f4d1SMatthew Dillon * MPSAFE 81691f37dcbSRobert Watson */ 81791f37dcbSRobert Watson int 818b40ce416SJulian Elischer __acl_delete_file(struct thread *td, struct __acl_delete_file_args *uap) 81991f37dcbSRobert Watson { 82091f37dcbSRobert Watson struct nameidata nd; 82191f37dcbSRobert Watson int error; 82291f37dcbSRobert Watson 823f708f4d1SMatthew Dillon mtx_lock(&Giant); 824d1e405c5SAlfred Perlstein NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td); 82591f37dcbSRobert Watson error = namei(&nd); 826f708f4d1SMatthew Dillon if (error == 0) { 827d1e405c5SAlfred Perlstein error = vacl_delete(td, nd.ni_vp, uap->type); 82891f37dcbSRobert Watson NDFREE(&nd, 0); 829f708f4d1SMatthew Dillon } 830f708f4d1SMatthew Dillon mtx_unlock(&Giant); 83191f37dcbSRobert Watson return (error); 83291f37dcbSRobert Watson } 83391f37dcbSRobert Watson 83491f37dcbSRobert Watson /* 8353c67c23bSRobert Watson * Given a file path, delete an ACL from it; don't follow links. 8363c67c23bSRobert Watson * 8373c67c23bSRobert Watson * MPSAFE 8383c67c23bSRobert Watson */ 8393c67c23bSRobert Watson int 8403c67c23bSRobert Watson __acl_delete_link(struct thread *td, struct __acl_delete_link_args *uap) 8413c67c23bSRobert Watson { 8423c67c23bSRobert Watson struct nameidata nd; 8433c67c23bSRobert Watson int error; 8443c67c23bSRobert Watson 8453c67c23bSRobert Watson mtx_lock(&Giant); 8463c67c23bSRobert Watson NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td); 8473c67c23bSRobert Watson error = namei(&nd); 8483c67c23bSRobert Watson if (error == 0) { 8493c67c23bSRobert Watson error = vacl_delete(td, nd.ni_vp, uap->type); 8503c67c23bSRobert Watson NDFREE(&nd, 0); 8513c67c23bSRobert Watson } 8523c67c23bSRobert Watson mtx_unlock(&Giant); 8533c67c23bSRobert Watson return (error); 8543c67c23bSRobert Watson } 8553c67c23bSRobert Watson 8563c67c23bSRobert Watson /* 85791f37dcbSRobert Watson * Given a file path, delete an ACL from it. 858f708f4d1SMatthew Dillon * 859f708f4d1SMatthew Dillon * MPSAFE 86091f37dcbSRobert Watson */ 86191f37dcbSRobert Watson int 862b40ce416SJulian Elischer __acl_delete_fd(struct thread *td, struct __acl_delete_fd_args *uap) 86391f37dcbSRobert Watson { 86491f37dcbSRobert Watson struct file *fp; 86591f37dcbSRobert Watson int error; 86691f37dcbSRobert Watson 867f708f4d1SMatthew Dillon mtx_lock(&Giant); 868d1e405c5SAlfred Perlstein error = getvnode(td->td_proc->p_fd, uap->filedes, &fp); 869f708f4d1SMatthew Dillon if (error == 0) { 870b40ce416SJulian Elischer error = vacl_delete(td, (struct vnode *)fp->f_data, 871d1e405c5SAlfred Perlstein uap->type); 872426da3bcSAlfred Perlstein fdrop(fp, td); 873f708f4d1SMatthew Dillon } 874f708f4d1SMatthew Dillon mtx_unlock(&Giant); 87591f37dcbSRobert Watson return (error); 87691f37dcbSRobert Watson } 87791f37dcbSRobert Watson 87891f37dcbSRobert Watson /* 87991f37dcbSRobert Watson * Given a file path, check an ACL for it 880f708f4d1SMatthew Dillon * 881f708f4d1SMatthew Dillon * MPSAFE 88291f37dcbSRobert Watson */ 88391f37dcbSRobert Watson int 884b40ce416SJulian Elischer __acl_aclcheck_file(struct thread *td, struct __acl_aclcheck_file_args *uap) 88591f37dcbSRobert Watson { 88691f37dcbSRobert Watson struct nameidata nd; 88791f37dcbSRobert Watson int error; 88891f37dcbSRobert Watson 889f708f4d1SMatthew Dillon mtx_lock(&Giant); 890d1e405c5SAlfred Perlstein NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, uap->path, td); 89191f37dcbSRobert Watson error = namei(&nd); 892f708f4d1SMatthew Dillon if (error == 0) { 893f97182acSAlfred Perlstein error = vacl_aclcheck(td, nd.ni_vp, uap->type, uap->aclp); 89491f37dcbSRobert Watson NDFREE(&nd, 0); 895f708f4d1SMatthew Dillon } 896f708f4d1SMatthew Dillon mtx_unlock(&Giant); 89791f37dcbSRobert Watson return (error); 89891f37dcbSRobert Watson } 89991f37dcbSRobert Watson 90091f37dcbSRobert Watson /* 9013c67c23bSRobert Watson * Given a file path, check an ACL for it; don't follow links. 9023c67c23bSRobert Watson * 9033c67c23bSRobert Watson * MPSAFE 9043c67c23bSRobert Watson */ 9053c67c23bSRobert Watson int 9063c67c23bSRobert Watson __acl_aclcheck_link(struct thread *td, struct __acl_aclcheck_link_args *uap) 9073c67c23bSRobert Watson { 9083c67c23bSRobert Watson struct nameidata nd; 9093c67c23bSRobert Watson int error; 9103c67c23bSRobert Watson 9113c67c23bSRobert Watson mtx_lock(&Giant); 9123c67c23bSRobert Watson NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_USERSPACE, uap->path, td); 9133c67c23bSRobert Watson error = namei(&nd); 9143c67c23bSRobert Watson if (error == 0) { 9153c67c23bSRobert Watson error = vacl_aclcheck(td, nd.ni_vp, uap->type, uap->aclp); 9163c67c23bSRobert Watson NDFREE(&nd, 0); 9173c67c23bSRobert Watson } 9183c67c23bSRobert Watson mtx_unlock(&Giant); 9193c67c23bSRobert Watson return (error); 9203c67c23bSRobert Watson } 9213c67c23bSRobert Watson 9223c67c23bSRobert Watson /* 92391f37dcbSRobert Watson * Given a file descriptor, check an ACL for it 924f708f4d1SMatthew Dillon * 925f708f4d1SMatthew Dillon * MPSAFE 92691f37dcbSRobert Watson */ 92791f37dcbSRobert Watson int 928b40ce416SJulian Elischer __acl_aclcheck_fd(struct thread *td, struct __acl_aclcheck_fd_args *uap) 92991f37dcbSRobert Watson { 93091f37dcbSRobert Watson struct file *fp; 93191f37dcbSRobert Watson int error; 93291f37dcbSRobert Watson 933f708f4d1SMatthew Dillon mtx_lock(&Giant); 934d1e405c5SAlfred Perlstein error = getvnode(td->td_proc->p_fd, uap->filedes, &fp); 935f708f4d1SMatthew Dillon if (error == 0) { 936b40ce416SJulian Elischer error = vacl_aclcheck(td, (struct vnode *)fp->f_data, 937d1e405c5SAlfred Perlstein uap->type, uap->aclp); 938426da3bcSAlfred Perlstein fdrop(fp, td); 939f708f4d1SMatthew Dillon } 940f708f4d1SMatthew Dillon mtx_unlock(&Giant); 94191f37dcbSRobert Watson return (error); 94291f37dcbSRobert Watson } 943