FreeRTOS-RISCV/FreeRTOSv10.2.1/FreeRTOS-Plus/Source/Reliance-Edge/toolcmn/toolcmn.c

100 lines
3.5 KiB
C

/* ----> DO NOT REMOVE THE FOLLOWING NOTICE <----
Copyright (c) 2014-2015 Datalight, Inc.
All Rights Reserved Worldwide.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; use version 2 of the License.
This program is distributed in the hope that it will be useful,
but "AS-IS," WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* Businesses and individuals that for commercial or other reasons cannot
comply with the terms of the GPLv2 license may obtain a commercial license
before incorporating Reliance Edge into proprietary software for
distribution in any form. Visit http://www.datalight.com/reliance-edge for
more information.
*/
/** @file
@brief Implements common-code utilities for tools and tests.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
#include <redfs.h>
#include <redcoreapi.h>
#include <redvolume.h>
#include <redtoolcmn.h>
/** @brief Convert a string into a volume number.
In a POSIX-like configuration, @p pszVolume can either be a volume number or
a volume path prefix. In case of ambiguity, the volume number of a matching
path prefix takes precedence.
In an FSE configuration, @p pszVolume can be a volume number.
@param pszVolume The volume string.
@return On success, returns the volume number; on failure, returns
#REDCONF_VOLUME_COUNT.
*/
uint8_t RedFindVolumeNumber(
const char *pszVolume)
{
unsigned long ulNumber;
const char *pszEndPtr;
uint8_t bVolNum = REDCONF_VOLUME_COUNT;
#if REDCONF_API_POSIX == 1
uint8_t bIndex;
#endif
/* Determine if pszVolume can be interpreted as a volume number.
*/
errno = 0;
ulNumber = strtoul(pszVolume, (char **)&pszEndPtr, 10);
if((errno == 0) && (ulNumber != ULONG_MAX) && (pszEndPtr[0U] == '\0') && (ulNumber < REDCONF_VOLUME_COUNT))
{
bVolNum = (uint8_t)ulNumber;
}
#if REDCONF_API_POSIX == 1
/* Determine if pszVolume is a valid path prefix.
*/
for(bIndex = 0U; bIndex < REDCONF_VOLUME_COUNT; bIndex++)
{
if(strcmp(gaRedVolConf[bIndex].pszPathPrefix, pszVolume) == 0)
{
break;
}
}
if(bIndex < REDCONF_VOLUME_COUNT)
{
/* Edge case: It is technically possible for pszVolume to be both a
valid volume number and a valid volume prefix, for different
volumes. For example, if pszVolume is "2", that would be recognized
as volume number 2 above. But if "2" is the (poorly chosen) path
prefix for volume number 4, that would also be matched. Since the
POSIX-like API is primarily name based, and the ability to use
volume numbers with this tool is just a convenience, the volume
prefix takes precedence.
*/
bVolNum = bIndex;
}
#endif
return bVolNum;
}