| 1 | /* $Id: path2-posix.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Path Manipulation, POSIX, Part 2 - RTPathQueryInfo.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #define LOG_GROUP RTLOGGROUP_PATH
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| 42 | #include <stdlib.h>
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| 43 | #include <limits.h>
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| 44 | #include <errno.h>
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| 45 | #include <unistd.h>
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| 46 | #include <sys/stat.h>
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| 47 | #include <sys/time.h>
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| 48 | #include <stdio.h>
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| 49 | #include <sys/types.h>
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| 50 |
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| 51 | #include <iprt/path.h>
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| 52 | #include <iprt/env.h>
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| 53 | #include <iprt/assert.h>
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| 54 | #include <iprt/string.h>
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| 55 | #include <iprt/err.h>
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| 56 | #include <iprt/log.h>
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| 57 | #include "internal/path.h"
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| 58 | #include "internal/process.h"
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| 59 | #include "internal/fs.h"
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| 60 |
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| 61 |
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| 62 | RTR3DECL(int) RTPathQueryInfo(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs)
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| 63 | {
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| 64 | return RTPathQueryInfoEx(pszPath, pObjInfo, enmAdditionalAttribs, RTPATH_F_ON_LINK);
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| 65 | }
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| 66 |
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| 67 |
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| 68 | RTR3DECL(int) RTPathQueryInfoEx(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs, uint32_t fFlags)
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| 69 | {
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| 70 | /*
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| 71 | * Validate input.
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| 72 | */
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| 73 | AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
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| 74 | AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
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| 75 | AssertPtrReturn(pObjInfo, VERR_INVALID_POINTER);
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| 76 | AssertMsgReturn( enmAdditionalAttribs >= RTFSOBJATTRADD_NOTHING
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| 77 | && enmAdditionalAttribs <= RTFSOBJATTRADD_LAST,
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| 78 | ("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs),
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| 79 | VERR_INVALID_PARAMETER);
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| 80 | AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
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| 81 |
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| 82 | /*
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| 83 | * Convert the filename.
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| 84 | */
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| 85 | char const *pszNativePath;
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| 86 | int rc = rtPathToNative(&pszNativePath, pszPath, NULL);
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| 87 | if (RT_SUCCESS(rc))
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| 88 | {
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| 89 | struct stat Stat;
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| 90 | if (fFlags & RTPATH_F_FOLLOW_LINK)
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| 91 | rc = stat(pszNativePath, &Stat);
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| 92 | else
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| 93 | rc = lstat(pszNativePath, &Stat); /** @todo how doesn't have lstat again? */
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| 94 | if (!rc)
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| 95 | {
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| 96 | rtFsConvertStatToObjInfo(pObjInfo, &Stat, pszPath, 0);
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| 97 | switch (enmAdditionalAttribs)
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| 98 | {
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| 99 | case RTFSOBJATTRADD_NOTHING:
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| 100 | case RTFSOBJATTRADD_UNIX:
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| 101 | Assert(pObjInfo->Attr.enmAdditional == RTFSOBJATTRADD_UNIX);
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| 102 | break;
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| 103 |
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| 104 | case RTFSOBJATTRADD_UNIX_OWNER:
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| 105 | rtFsObjInfoAttrSetUnixOwner(pObjInfo, Stat.st_uid);
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| 106 | break;
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| 107 |
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| 108 | case RTFSOBJATTRADD_UNIX_GROUP:
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| 109 | rtFsObjInfoAttrSetUnixGroup(pObjInfo, Stat.st_gid);
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| 110 | break;
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| 111 |
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| 112 | case RTFSOBJATTRADD_EASIZE:
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| 113 | /** @todo Use SGI extended attribute interface to query EA info. */
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| 114 | pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_EASIZE;
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| 115 | pObjInfo->Attr.u.EASize.cb = 0;
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| 116 | break;
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| 117 |
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| 118 | default:
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| 119 | AssertMsgFailed(("Impossible!\n"));
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| 120 | return VERR_INTERNAL_ERROR;
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| 121 | }
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| 122 | }
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| 123 | else
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| 124 | rc = RTErrConvertFromErrno(errno);
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| 125 | rtPathFreeNative(pszNativePath, pszPath);
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| 126 | }
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| 127 |
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| 128 | LogFlow(("RTPathQueryInfoEx(%p:{%s}, pObjInfo=%p, %d): returns %Rrc\n",
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| 129 | pszPath, pszPath, pObjInfo, enmAdditionalAttribs, rc));
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| 130 | return rc;
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| 131 | }
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| 132 |
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| 133 |
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| 134 | RTR3DECL(int) RTPathSetTimes(const char *pszPath, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
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| 135 | PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
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| 136 | {
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| 137 | return RTPathSetTimesEx(pszPath, pAccessTime, pModificationTime, pChangeTime, pBirthTime, RTPATH_F_ON_LINK);
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| 138 | }
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| 139 |
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| 140 |
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| 141 | RTR3DECL(int) RTPathSetTimesEx(const char *pszPath, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
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| 142 | PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime, uint32_t fFlags)
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| 143 | {
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| 144 | /*
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| 145 | * Validate input.
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| 146 | */
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| 147 | AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
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| 148 | AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
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| 149 | AssertPtrNullReturn(pAccessTime, VERR_INVALID_POINTER);
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| 150 | AssertPtrNullReturn(pModificationTime, VERR_INVALID_POINTER);
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| 151 | AssertPtrNullReturn(pChangeTime, VERR_INVALID_POINTER);
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| 152 | AssertPtrNullReturn(pBirthTime, VERR_INVALID_POINTER);
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| 153 | AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
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| 154 |
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| 155 | /*
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| 156 | * Convert the paths.
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| 157 | */
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| 158 | char const *pszNativePath;
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| 159 | int rc = rtPathToNative(&pszNativePath, pszPath, NULL);
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| 160 | if (RT_SUCCESS(rc))
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| 161 | {
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| 162 | RTFSOBJINFO ObjInfo;
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| 163 |
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| 164 | /*
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| 165 | * If it's a no-op, we'll only verify the existance of the file.
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| 166 | */
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| 167 | if (!pAccessTime && !pModificationTime)
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| 168 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_NOTHING, fFlags);
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| 169 | else
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| 170 | {
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| 171 | /*
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| 172 | * Convert the input to timeval, getting the missing one if necessary,
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| 173 | * and call the API which does the change.
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| 174 | */
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| 175 | struct timeval aTimevals[2];
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| 176 | if (pAccessTime && pModificationTime)
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| 177 | {
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| 178 | RTTimeSpecGetTimeval(pAccessTime, &aTimevals[0]);
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| 179 | RTTimeSpecGetTimeval(pModificationTime, &aTimevals[1]);
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| 180 | }
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| 181 | else
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| 182 | {
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| 183 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_UNIX, fFlags);
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| 184 | if (RT_SUCCESS(rc))
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| 185 | {
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| 186 | RTTimeSpecGetTimeval(pAccessTime ? pAccessTime : &ObjInfo.AccessTime, &aTimevals[0]);
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| 187 | RTTimeSpecGetTimeval(pModificationTime ? pModificationTime : &ObjInfo.ModificationTime, &aTimevals[1]);
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| 188 | }
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| 189 | else
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| 190 | Log(("RTPathSetTimes('%s',%p,%p,,): RTPathQueryInfo failed with %Rrc\n",
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| 191 | pszPath, pAccessTime, pModificationTime, rc));
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| 192 | }
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| 193 | if (RT_SUCCESS(rc))
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| 194 | {
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| 195 | if (fFlags & RTPATH_F_FOLLOW_LINK)
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| 196 | {
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| 197 | if (utimes(pszNativePath, aTimevals))
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| 198 | rc = RTErrConvertFromErrno(errno);
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| 199 | }
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| 200 | #if (defined(RT_OS_DARWIN) && MAC_OS_X_VERSION_MIN_REQUIRED >= 1050) \
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| 201 | || defined(RT_OS_FREEBSD) \
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| 202 | || defined(RT_OS_LINUX) \
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| 203 | || defined(RT_OS_OS2) /** @todo who really has lutimes? */
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| 204 | else
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| 205 | {
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| 206 | if (lutimes(pszNativePath, aTimevals))
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| 207 | {
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| 208 | /* If lutimes is not supported (e.g. linux < 2.6.22), try fall back on utimes: */
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| 209 | if (errno != ENOSYS)
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| 210 | rc = RTErrConvertFromErrno(errno);
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| 211 | else
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| 212 | {
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| 213 | if (pAccessTime && pModificationTime)
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| 214 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_UNIX, fFlags);
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| 215 | if (RT_SUCCESS(rc) && !RTFS_IS_SYMLINK(ObjInfo.Attr.fMode))
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| 216 | {
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| 217 | if (utimes(pszNativePath, aTimevals))
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| 218 | rc = RTErrConvertFromErrno(errno);
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| 219 | }
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| 220 | else
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| 221 | rc = VERR_NOT_SUPPORTED;
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| 222 | }
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| 223 | }
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| 224 | }
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| 225 | #else
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| 226 | else
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| 227 | {
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| 228 | if (pAccessTime && pModificationTime)
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| 229 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_UNIX, fFlags);
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| 230 | if (RT_SUCCESS(rc) && RTFS_IS_SYMLINK(ObjInfo.Attr.fMode))
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| 231 | rc = VERR_NS_SYMLINK_SET_TIME;
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| 232 | else if (RT_SUCCESS(rc))
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| 233 | {
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| 234 | if (utimes(pszNativePath, aTimevals))
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| 235 | rc = RTErrConvertFromErrno(errno);
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| 236 | }
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| 237 | }
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| 238 | #endif
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| 239 | if (RT_FAILURE(rc))
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| 240 | Log(("RTPathSetTimes('%s',%p,%p,,): failed with %Rrc and errno=%d\n",
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| 241 | pszPath, pAccessTime, pModificationTime, rc, errno));
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| 242 | }
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| 243 | }
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| 244 | rtPathFreeNative(pszNativePath, pszPath);
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| 245 | }
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| 246 |
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| 247 | LogFlow(("RTPathSetTimes(%p:{%s}, %p:{%RDtimespec}, %p:{%RDtimespec}, %p:{%RDtimespec}, %p:{%RDtimespec}): return %Rrc\n",
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| 248 | pszPath, pszPath, pAccessTime, pAccessTime, pModificationTime, pModificationTime,
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| 249 | pChangeTime, pChangeTime, pBirthTime, pBirthTime, rc));
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| 250 | return rc;
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| 251 | }
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| 252 |
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| 253 |
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| 254 | RTR3DECL(int) RTPathSetOwner(const char *pszPath, uint32_t uid, uint32_t gid)
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| 255 | {
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| 256 | return RTPathSetOwnerEx(pszPath, uid, gid, RTPATH_F_ON_LINK);
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| 257 | }
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| 258 |
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| 259 |
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| 260 | RTR3DECL(int) RTPathSetOwnerEx(const char *pszPath, uint32_t uid, uint32_t gid, uint32_t fFlags)
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| 261 | {
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| 262 | /*
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| 263 | * Validate input.
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| 264 | */
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| 265 | AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
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| 266 | AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
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| 267 | AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
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| 268 | uid_t uidNative = uid != NIL_RTUID ? (uid_t)uid : (uid_t)-1;
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| 269 | AssertReturn(uid == uidNative, VERR_INVALID_PARAMETER);
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| 270 | gid_t gidNative = gid != NIL_RTGID ? (gid_t)gid : (uid_t)-1;
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| 271 | AssertReturn(gid == gidNative, VERR_INVALID_PARAMETER);
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| 272 |
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| 273 | /*
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| 274 | * Convert the path.
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| 275 | */
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| 276 | char const *pszNativePath;
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| 277 | int rc = rtPathToNative(&pszNativePath, pszPath, NULL);
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| 278 | if (RT_SUCCESS(rc))
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| 279 | {
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| 280 | if (fFlags & RTPATH_F_FOLLOW_LINK)
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| 281 | {
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| 282 | if (chown(pszNativePath, uidNative, gidNative))
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| 283 | rc = RTErrConvertFromErrno(errno);
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| 284 | }
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| 285 | #if 1
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| 286 | else
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| 287 | {
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| 288 | if (lchown(pszNativePath, uidNative, gidNative))
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| 289 | rc = RTErrConvertFromErrno(errno);
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| 290 | }
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| 291 | #else
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| 292 | else
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| 293 | {
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| 294 | RTFSOBJINFO ObjInfo;
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| 295 | rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_UNIX, fFlags);
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| 296 | if (RT_SUCCESS(rc) && RTFS_IS_SYMLINK(ObjInfo.Attr.fMode))
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| 297 | rc = VERR_NS_SYMLINK_CHANGE_OWNER;
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| 298 | else if (RT_SUCCESS(rc))
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| 299 | {
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| 300 | if (lchown(pszNativePath, uidNative, gidNative))
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| 301 | rc = RTErrConvertFromErrno(errno);
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| 302 | }
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| 303 | }
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| 304 | #endif
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| 305 | if (RT_FAILURE(rc))
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| 306 | Log(("RTPathSetOwnerEx('%s',%d,%d): failed with %Rrc and errno=%d\n",
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| 307 | pszPath, uid, gid, rc, errno));
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| 308 |
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| 309 | rtPathFreeNative(pszNativePath, pszPath);
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| 310 | }
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| 311 |
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| 312 | LogFlow(("RTPathSetOwnerEx(%p:{%s}, uid=%d, gid=%d): return %Rrc\n",
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| 313 | pszPath, pszPath, uid, gid, rc));
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| 314 | return rc;
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| 315 | }
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| 316 |
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