libc/pwd: Added stubbed implementations
Added stubbed implementations of getpwuid, getpwuid_r, getpwnam, and getpwnam_r. These functions are essentially stubs pretending that NuttX supported users and that the only configured user in the system was 'root' with uid 0. The intend is not to provide meaningful new features, but to ease porting of foreign source code to NuttX.
This commit is contained in:
Michael Jung
Gregory Nutt
parent
d27bd9e98e
commit
f3c85bd253
90
include/pwd.h
Normal file
90
include/pwd.h
Normal file
@ -0,0 +1,90 @@
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/****************************************************************************
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* include/pwd.h
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Michael Jung <mijung@gmx.net>
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
|
||||
* are met:
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||||
*
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||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
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||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
|
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* used to endorse or promote products derived from this software
|
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* without specific prior written permission.
|
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_PWD_H
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#define __INCLUDE_PWD_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include <sys/types.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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struct passwd
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{
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FAR char *pw_name;
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uid_t pw_uid;
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gid_t pw_gid;
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FAR char *pw_dir;
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FAR char *pw_shell;
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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FAR struct passwd *getpwnam(FAR const char *name);
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FAR struct passwd *getpwuid(uid_t uid);
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int getpwnam_r(FAR const char *name, FAR struct passwd *pwd, FAR char *buf,
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size_t buflen, FAR struct passwd **result);
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int getpwuid_r(uid_t uid, FAR struct passwd *pwd, FAR char *buf,
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size_t buflen, FAR struct passwd **result);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __INCLUDE_PWD_H */
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@ -72,6 +72,7 @@ include modlib/Make.defs
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include net/Make.defs
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include netdb/Make.defs
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include pthread/Make.defs
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include pwd/Make.defs
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include queue/Make.defs
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include sched/Make.defs
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include semaphore/Make.defs
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@ -43,6 +43,7 @@ we have:
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modlib - Part of module and shared library logic: nuttx/lib/modlib.h
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net - Various network-related header files: netinet/ether.h, arpa/inet.h
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pthread - pthread.h
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pwd - pwd.h
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queue - queue.h
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sched - sched.h
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semaphore - semaphore.h
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44
libs/libc/pwd/Make.defs
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44
libs/libc/pwd/Make.defs
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@ -0,0 +1,44 @@
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############################################################################
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# libs/libc/pwd/Make.defs
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#
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# Copyright (C) 2011-2012, 2019 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <gnutt@nuttx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
|
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# notice, this list of conditions and the following disclaimer.
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||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
|
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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# Add the pwd C files to the build
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CSRCS += lib_getpwnam.c lib_getpwnamr.c lib_getpwuid.c lib_getpwuidr.c
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CSRCS += lib_pwd.c
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# Add the pwd directory to the build
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DEPPATH += --dep-path pwd
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VPATH += :pwd
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78
libs/libc/pwd/lib_getpwnam.c
Normal file
78
libs/libc/pwd/lib_getpwnam.c
Normal file
@ -0,0 +1,78 @@
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/****************************************************************************
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* libs/libc/pwd/lib_getpwnam.c
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Michael Jung <mijung@gmx.net>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
|
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* are met:
|
||||
*
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||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
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* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
|
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* distribution.
|
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* 3. Neither the name NuttX nor the names of its contributors may be
|
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* used to endorse or promote products derived from this software
|
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* without specific prior written permission.
|
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*
|
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <string.h>
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#include <pwd.h>
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#include "pwd/lib_pwd.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: getpwnam
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*
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* Description:
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* The getpwnam() function searches the user database for an entry with a
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* matching name.
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*
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* Input Parameters:
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* name - The user name to return a passwd structure for.
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*
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* Returned Value:
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* A pointer to a statically allocated passwd structure, or NULL if no
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* matching entry is found or an error occurs. Applications wishing to
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* check for error situations should set errno to 0 before calling
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* getpwnam(). If getpwnam() returns a null pointer and errno is set to
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* non-zero, an error occurred.
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*
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****************************************************************************/
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FAR struct passwd *getpwnam(FAR const char *name)
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{
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if (strcmp(name, ROOT_NAME))
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{
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return NULL;
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}
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return getpwbuf(ROOT_UID, ROOT_GID, ROOT_NAME, ROOT_DIR, ROOT_SHELL);
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}
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88
libs/libc/pwd/lib_getpwnamr.c
Normal file
88
libs/libc/pwd/lib_getpwnamr.c
Normal file
@ -0,0 +1,88 @@
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/****************************************************************************
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* libs/libc/pwd/lib_getpwnamr.c
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Michael Jung <mijung@gmx.net>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
|
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* are met:
|
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*
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* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
|
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* distribution.
|
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* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
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* without specific prior written permission.
|
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <pwd.h>
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#include <string.h>
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#include "pwd/lib_pwd.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: getpwnam_r
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*
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* Description:
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* The getpwnam_r() function searches the user database for an entry with a
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* matching name and stores the retrieved passwd structure in the space
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* pointed to by pwd.
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*
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* Input Parameters:
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* name - The name to return a passwd structure for.
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* pwd - Pointer to the space to store the retrieved passwd structure in.
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* buf - The string fields pointed to by the passwd struct are stored here.
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* buflen - The length of buf in bytes.
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* result - Pointer to the resulting passwd struct, or NULL in case of fail.
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*
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* Returned Value:
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* On success getpwnam_r returns 0 and sets *result to pwd. If no match
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* is found, 0 is returned and *result is set to NULL. In case of failure
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* an error number is returned.
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*
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****************************************************************************/
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int getpwnam_r(FAR const char *name, FAR struct passwd *pwd, FAR char *buf,
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size_t buflen, FAR struct passwd **result)
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{
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if (strcmp(name, ROOT_NAME))
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{
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/* The only known user is 'root', which has a uid of 0. Thus, report
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* back that no match was found.
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*/
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*result = NULL;
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return 0;
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}
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return getpwbuf_r(ROOT_UID, ROOT_GID, ROOT_NAME, ROOT_DIR, ROOT_SHELL, pwd,
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buf, buflen, result);
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}
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77
libs/libc/pwd/lib_getpwuid.c
Normal file
77
libs/libc/pwd/lib_getpwuid.c
Normal file
@ -0,0 +1,77 @@
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/****************************************************************************
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* libs/libc/pwd/lib_getpwuid.c
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Michael Jung <mijung@gmx.net>
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*
|
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
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/****************************************************************************
|
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* Included Files
|
||||
****************************************************************************/
|
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#include <nuttx/config.h>
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#include <pwd.h>
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#include "pwd/lib_pwd.h"
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/****************************************************************************
|
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* Public Functions
|
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****************************************************************************/
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|
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/****************************************************************************
|
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* Name: getpwuid
|
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*
|
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* Description:
|
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* The getpwuid() function searches the user database for an entry with a
|
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* matching uid.
|
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*
|
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* Input Parameters:
|
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* uid - The uid to return a passwd structure for.
|
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*
|
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* Returned Value:
|
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* A pointer to a statically allocated passwd structure, or NULL if no
|
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* matching entry is found or an error occurs. Applications wishing to
|
||||
* check for error situations should set errno to 0 before calling
|
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* getpwuid(). If getpwuid() returns a null pointer and errno is set to
|
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* non-zero, an error occurred.
|
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*
|
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****************************************************************************/
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FAR struct passwd *getpwuid(uid_t uid)
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{
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if (uid != ROOT_UID)
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{
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return NULL;
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}
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return getpwbuf(ROOT_UID, ROOT_GID, ROOT_NAME, ROOT_DIR, ROOT_SHELL);
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}
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87
libs/libc/pwd/lib_getpwuidr.c
Normal file
87
libs/libc/pwd/lib_getpwuidr.c
Normal file
@ -0,0 +1,87 @@
|
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/****************************************************************************
|
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* libs/libc/pwd/lib_getpwuidr.c
|
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*
|
||||
* Copyright (C) 2019 Gregory Nutt. All rights reserved.
|
||||
* Author: Michael Jung <mijung@gmx.net>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
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#include <nuttx/config.h>
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|
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#include <pwd.h>
|
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|
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#include "pwd/lib_pwd.h"
|
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|
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/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: getpwuid_r
|
||||
*
|
||||
* Description:
|
||||
* The getpwuid_r() function searches the user database for an entry with a
|
||||
* matching uid and stores the retrieved passwd structure in the space
|
||||
* pointed to by pwd.
|
||||
*
|
||||
* Input Parameters:
|
||||
* uid - The uid to return a passwd structure for.
|
||||
* pwd - Pointer to the space to store the retrieved passwd structure in.
|
||||
* buf - The string fields pointed to by the passwd struct are stored here.
|
||||
* buflen - The length of buf in bytes.
|
||||
* result - Pointer to the resulting passwd struct, or NULL in case of fail.
|
||||
*
|
||||
* Returned Value:
|
||||
* On success getpwuid_r returns 0 and sets *result to pwd. If no match
|
||||
* is found, 0 is returned and *result is set to NULL. In case of failure
|
||||
* an error number is returned.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int getpwuid_r(uid_t uid, FAR struct passwd *pwd, FAR char *buf,
|
||||
size_t buflen, FAR struct passwd **result)
|
||||
{
|
||||
if (uid != ROOT_UID)
|
||||
{
|
||||
/* The only known user is 'root', which has a uid of 0. Thus, report
|
||||
* back that no match was found.
|
||||
*/
|
||||
|
||||
*result = NULL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
return getpwbuf_r(ROOT_UID, ROOT_GID, ROOT_NAME, ROOT_DIR, ROOT_SHELL, pwd,
|
||||
buf, buflen, result);
|
||||
}
|
||||
184
libs/libc/pwd/lib_pwd.c
Normal file
184
libs/libc/pwd/lib_pwd.c
Normal file
@ -0,0 +1,184 @@
|
||||
/****************************************************************************
|
||||
* libs/libc/pwd/lib_pwd.c
|
||||
*
|
||||
* Copyright (C) 2019 Gregory Nutt. All rights reserved.
|
||||
* Author: Michael Jung <mijung@gmx.net>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
#include <pwd.h>
|
||||
|
||||
#include "pwd/lib_pwd.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Private Data
|
||||
****************************************************************************/
|
||||
|
||||
static FAR char *g_buf;
|
||||
static FAR struct passwd *g_pwd;
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: getpwbuf
|
||||
*
|
||||
* Description:
|
||||
* libc/grp internal helper function for getpwgid and getpwnam to allocate
|
||||
* and setup a passwd structure once a matching entry has been found.
|
||||
*
|
||||
* Input Parameters:
|
||||
* uid - Value to set the passwd structure's pw_uid field to.
|
||||
* gid - Value to set the passwd structure's pw_gid field to.
|
||||
* name - Value to set the passwd structure's pw_name field to.
|
||||
* dir - Value to set the passwd structure's pw_dir field to.
|
||||
* shell - Value to set the passwd structure's pw_shell field to.
|
||||
*
|
||||
* Returned Value:
|
||||
* A pointer to a statically allocated passwd structure, or NULL if an
|
||||
* error occurs, in which case errno is set appropriately.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct passwd *getpwbuf(uid_t uid, gid_t gid, FAR const char *name,
|
||||
FAR const char *dir, FAR const char *shell)
|
||||
{
|
||||
FAR struct passwd *result;
|
||||
FAR char *newbuf;
|
||||
size_t buflen;
|
||||
int err;
|
||||
|
||||
buflen = strlen(name) + 1 + strlen(dir) + 1 + strlen(shell) + 1;
|
||||
|
||||
newbuf = (FAR char *)realloc(g_buf, buflen);
|
||||
|
||||
if (!newbuf)
|
||||
{
|
||||
err = ENOMEM;
|
||||
goto error;
|
||||
}
|
||||
|
||||
g_buf = newbuf;
|
||||
|
||||
if (!g_pwd)
|
||||
{
|
||||
g_pwd = (FAR struct passwd *)malloc(sizeof(struct passwd));
|
||||
}
|
||||
|
||||
if (!g_pwd)
|
||||
{
|
||||
err = ENOMEM;
|
||||
goto error;
|
||||
}
|
||||
|
||||
err = getpwbuf_r(uid, gid, name, dir, shell, g_pwd, g_buf, buflen, &result);
|
||||
|
||||
if (err)
|
||||
{
|
||||
goto error;
|
||||
}
|
||||
|
||||
return result;
|
||||
|
||||
error:
|
||||
free(g_pwd);
|
||||
free(g_buf);
|
||||
g_pwd = NULL;
|
||||
g_buf = NULL;
|
||||
set_errno(err);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: getpwbuf_r
|
||||
*
|
||||
* Description:
|
||||
* libc/grp internal helper function for getpwuid_r and getpwnam_r to setup
|
||||
* the caller supplied 'pwd' and 'buf' buffers once a matching entry has
|
||||
* been found.
|
||||
*
|
||||
* Input Parameters:
|
||||
* uid - Value to set the passwd structure's pw_uid field to.
|
||||
* gid - Value to set the passwd structure's pw_gid field to.
|
||||
* name - Value to set the passwd structure's pw_name field to.
|
||||
* dir - Value to set the passwd structure's pw_dir field to.
|
||||
* shell - Value to set the passwd structure's pw_shell field to.
|
||||
* pwd - Pointer to the space to store the retrieved passwd structure in.
|
||||
* buf - String fields pointed to by the passwd struct are stored here.
|
||||
* buflen - The length of buf in bytes.
|
||||
* result - Pointer to the resulting passwd struct, or NULL in case of fail.
|
||||
*
|
||||
* Returned Value:
|
||||
* On success getpwgid_r returns 0 and sets *result to pwd. In case of
|
||||
* failure an error number is returned.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int getpwbuf_r(uid_t uid, gid_t gid, FAR const char *name,
|
||||
FAR const char *dir, FAR const char *shell,
|
||||
FAR struct passwd *pwd, FAR char *buf, size_t buflen,
|
||||
FAR struct passwd **result)
|
||||
{
|
||||
size_t reqdlen;
|
||||
|
||||
reqdlen = strlen(name) + 1 + strlen(dir) + 1 + strlen(shell) + 1;
|
||||
|
||||
if (buflen < reqdlen)
|
||||
{
|
||||
/* Insufficient buffer space supplied. */
|
||||
|
||||
*result = NULL;
|
||||
return ERANGE;
|
||||
}
|
||||
|
||||
pwd->pw_name = buf;
|
||||
pwd->pw_dir = &buf[strlen(name) + 1];
|
||||
pwd->pw_shell = &buf[strlen(name) + 1 + strlen(dir) + 1];
|
||||
|
||||
pwd->pw_uid = uid;
|
||||
pwd->pw_gid = gid;
|
||||
strcpy(pwd->pw_name, name);
|
||||
strcpy(pwd->pw_dir, dir);
|
||||
strcpy(pwd->pw_shell, shell);
|
||||
|
||||
*result = pwd;
|
||||
return 0;
|
||||
}
|
||||
85
libs/libc/pwd/lib_pwd.h
Normal file
85
libs/libc/pwd/lib_pwd.h
Normal file
@ -0,0 +1,85 @@
|
||||
/****************************************************************************
|
||||
* libs/libc/pwd/lib_pwd.h
|
||||
*
|
||||
* Copyright (C) 2019 Gregory Nutt. All rights reserved.
|
||||
* Author: Michael Jung <mijung@gmx.net>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __LIBS_LIBC_PWD_LIB_PWD_H
|
||||
#define __LIBS_LIBC_PWD_LIB_PWD_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <pwd.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
#define ROOT_NAME "root"
|
||||
#define ROOT_UID 0
|
||||
#define ROOT_GID 0
|
||||
#define ROOT_DIR "/root"
|
||||
#define ROOT_SHELL "/bin/nsh"
|
||||
|
||||
/****************************************************************************
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef __cplusplus
|
||||
#define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct passwd *getpwbuf(uid_t uid, gid_t gid, FAR const char *name,
|
||||
FAR const char *dir, FAR const char *shell);
|
||||
int getpwbuf_r(uid_t uid, gid_t gid, FAR const char *name,
|
||||
FAR const char *dir, FAR const char *shell,
|
||||
FAR struct passwd *pwd, FAR char *buf, size_t buflen,
|
||||
FAR struct passwd **result);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __LIBS_LIBC_PWD_LIB_PWD_H */
|
||||
Loading…
Reference in New Issue
Block a user