diff --git a/include/unistd.h b/include/unistd.h index 708917335b..41f163eaf2 100644 --- a/include/unistd.h +++ b/include/unistd.h @@ -1,7 +1,7 @@ /**************************************************************************** * include/unistd.h * - * Copyright (C) 2007-2009, 2013-2014, 2016-2018 Gregory Nutt. All rights + * Copyright (C) 2007-2009, 2013-2014, 2016-2019 Gregory Nutt. All rights * reserved. * Author: Gregory Nutt * @@ -375,6 +375,11 @@ uid_t getuid(void); int setgid(gid_t gid); gid_t getgid(void); +int seteuid(uid_t uid); +uid_t geteuid(void); +int setegid(gid_t gid); +gid_t getegid(void); + #undef EXTERN #if defined(__cplusplus) } diff --git a/libs/libc/unistd/Make.defs b/libs/libc/unistd/Make.defs index 2bd4b26d2b..5ed63e0761 100644 --- a/libs/libc/unistd/Make.defs +++ b/libs/libc/unistd/Make.defs @@ -38,6 +38,7 @@ CSRCS += lib_access.c lib_daemon.c lib_swab.c lib_sysconf.c CSRCS += lib_getopt.c lib_getoptargp.c lib_getoptindp.c lib_getoptoptp.c CSRCS += lib_sleep.c lib_usleep.c +CSRCS += lib_seteuid.c lib_setegid.c lib_geteuid.c lib_getegid.c ifneq ($(CONFIG_SCHED_USER_IDENTITY),y) CSRCS += lib_setuid.c lib_setgid.c lib_getuid.c lib_getgid.c diff --git a/libs/libc/unistd/lib_getegid.c b/libs/libc/unistd/lib_getegid.c new file mode 100644 index 0000000000..57df052e55 --- /dev/null +++ b/libs/libc/unistd/lib_getegid.c @@ -0,0 +1,77 @@ +/**************************************************************************** + * libs/libc/unistd/lib_getegid.c + * + * Copyright (C) 2019 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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 + +#include +#include + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: getegid + * + * Description: + * The getegid() function will the effective group ID of the calling task + * group. + * + * Input Parameters: + * None. + * + * Returned Value: + * The effective group ID of the calling task group. + * + ****************************************************************************/ + +gid_t getegid(void) +{ +#ifdef CONFIG_SCHED_USER_IDENTITY + /* If we have real UID/GID support, then treat the real group as the + * effective group ID. + */ + + return getgid(); +#else + /* Return group identity 'root' with a gid value of 0. */ + + return 0; +#endif +} diff --git a/libs/libc/unistd/lib_geteuid.c b/libs/libc/unistd/lib_geteuid.c new file mode 100644 index 0000000000..b9647ec1bd --- /dev/null +++ b/libs/libc/unistd/lib_geteuid.c @@ -0,0 +1,77 @@ +/**************************************************************************** + * libs/libc/unistd/lib_geteuid.c + * + * Copyright (C) 2019 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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 + +#include +#include + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: geteuid + * + * Description: + * The geteuid() function will return the effective user ID of the calling + * task group. + * + * Input Parameters: + * None + * + * Returned Value: + * The effective user ID of the calling task group. + * + ****************************************************************************/ + +uid_t geteuid(void) +{ +#ifdef CONFIG_SCHED_USER_IDENTITY + /* If we have real UID/GID support, then treat the real user ID as the + * effective user ID. + */ + + return getuid(); +#else + /* Return the user identity 'root' with a uid value of 0. */ + + return 0; +#endif +} diff --git a/libs/libc/unistd/lib_getgid.c b/libs/libc/unistd/lib_getgid.c index e25e78602e..595af281d4 100644 --- a/libs/libc/unistd/lib_getgid.c +++ b/libs/libc/unistd/lib_getgid.c @@ -50,7 +50,8 @@ * Name: getgid * * Description: - * The getgid() function will the real group ID of the calling task group. + * The getgid() function will return the real group ID of the calling + * task group. * * Input Parameters: * None. diff --git a/libs/libc/unistd/lib_setegid.c b/libs/libc/unistd/lib_setegid.c new file mode 100644 index 0000000000..ebed9dc25c --- /dev/null +++ b/libs/libc/unistd/lib_setegid.c @@ -0,0 +1,89 @@ +/**************************************************************************** + * libs/libc/unistd/lib_setegid.c + * + * Copyright (C) 2019 Gregory Nutt. All rights reserved. + * Author: Michael Jung + * + * 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 + +#include +#include +#include + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: setegid + * + * Description: + * The setegid() function sets the effect group ID of the calling task + * group to gid. + * + * Input Parameters: + * gid - Identity to set the various process' group ID attributes to. + * + * Returned Value: + * Zero if successful and -1 in case of failure, in which case errno is set + * appropriately. + * + ****************************************************************************/ + +int setegid(gid_t gid) +{ +#ifdef CONFIG_SCHED_USER_IDENTITY + /* If we have real UID/GID support, then treat the effective user ID as + * the real group ID. + */ + + return setgid(gid); +#else + /* NuttX only supports the group identity 'root' with a gid value of 0. */ + + if (gid == 0) + { + return 0; + } + + /* All other gid values are considered invalid and not supported by the + * implementation. + */ + + set_errno(EINVAL); + return -1; +#endif +} diff --git a/libs/libc/unistd/lib_seteuid.c b/libs/libc/unistd/lib_seteuid.c new file mode 100644 index 0000000000..ccc38ebbe7 --- /dev/null +++ b/libs/libc/unistd/lib_seteuid.c @@ -0,0 +1,88 @@ +/**************************************************************************** + * libs/libc/unistd/lib_seteuid.c + * + * Copyright (C) 2019 Gregory Nutt. All rights reserved. + * Author: Michael Jung + * + * 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 + +#include +#include + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: seteuid + * + * Description: + * The seteuid() function sets the effective user ID of the calling task + * group to uid. + * + * Input Parameters: + * uid - User identity to set the various process' user ID attributes to. + * + * Returned Value: + * Zero if successful and -1 in case of failure, in which case errno is set + * appropriately. + * + ****************************************************************************/ + +int seteuid(uid_t uid) +{ +#ifdef CONFIG_SCHED_USER_IDENTITY + /* If we have real UID/GID support, then treat the effective user ID as + * the real user ID. + */ + + return setuid(uid); +#else + /* NuttX only supports the user identity 'root' with a uid value of 0. */ + + if (uid == 0) + { + return 0; + } + + /* All other uid values are considered invalid and not supported by the + * implementation. + */ + + set_errno(EINVAL); + return -1; +#endif +}