nuttx/libc/misc/lib_utsname.c
2015-10-04 15:04:00 -06:00

127 lines
4.7 KiB
C

/****************************************************************************
* include/sys/utsname.c
*
* Copyright (C) 2015 Stavros Polymenis. All rights reserved.
* Author: Stavros Polymenis <sp@orbitalfox.com>
*
* 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 <sys/utsname.h>
#include <string.h>
#include <nuttx/version.h>
/* In the protected and kernel build modes where kernel and application code
* are separated, some of these common system property must reside only in
* the kernel. In that case, uname() can only be called from user space via
* a kernel system call.
*/
#if (!defined(CONFIG_BUILD_PROTECTED) && !defined(CONFIG_BUILD_KERNEL)) || \
defined(__KERNEL__)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: uname
*
* Description:
* The uname() function will store information identifying the current
* system in the structure pointed to by name.
*
* The uname() function uses the utsname structure defined in
* <sys/utsname.h>.
*
* The uname() function will return a string naming the current system in
* the character array sysname. Similarly, nodename will contain the name
* of this node within an implementation-defined communications network.
* The arrays release and version will further identify the operating
* system. The array machine will contain a name that identifies the
* hardware that the system is running on.
*
* The format of each member is implementation-defined.
*
* Input Parameters:
* name - The user-provided buffer to receive the system information.
*
* Returned Value:
* Upon successful completion, a non-negative value will be returned.
* Otherwise, -1 will be returned and errno set to indicate the error.
*
****************************************************************************/
int uname(FAR struct utsname *name)
{
int ret = 1;
/* Copy the strings. Assure that each is NUL terminated. */
strncpy(name->sysname, "NuttX", SYS_NAMELEN);
#ifdef CONFIG_LIBC_NETDB
/* Get the hostname */
if (-1 == gethostname(name->nodename, HOST_NAME_MAX))
{
ret = -1;
}
name->nodename[HOST_NAME_MAX-1] = '\0';
#else
strncpy(name->nodename, "", HOST_NAME_MAX);
#endif
strncpy(name->release, CONFIG_VERSION_STRING, SYS_NAMELEN);
name->release[SYS_NAMELEN-1] = '\0';
strncpy(name->version, CONFIG_VERSION_BUILD, VERSION_NAMELEN);
name->version[VERSION_NAMELEN-1] = '\0';
strncpy(name->machine, CONFIG_ARCH, SYS_NAMELEN);
name->machine[SYS_NAMELEN-1] = '\0';
return ret;
}
#endif /* (!CONFIG_BUILD_PROTECTED) && !CONFIG_BUILD_KERNEL) || __KERNEL__ */