forked from Imagelibrary/rtems
87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/**
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* @file
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*
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* @ingroup RTEMSMedia
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*
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* @brief Media implementation.
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*/
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/*
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* Copyright (c) 2009, 2010 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Obere Lagerstr. 30
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <assert.h>
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#include <rtems/media.h>
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char *rtems_media_create_path(
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const char *prefix,
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const char *name,
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rtems_device_major_number major
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)
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{
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size_t const size = strlen(prefix) + 1 + strlen(name) + 1 + 10 + 1;
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char *const s = malloc(size);
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if (s != NULL) {
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#ifndef NDEBUG
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int rv =
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#endif
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snprintf(s, size, "%s/%s-%" PRIu32, prefix, name, major);
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assert(rv < (int) size);
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}
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return s;
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}
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char *rtems_media_replace_prefix(const char *new_prefix, const char *path)
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{
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const char *const name_try = strrchr(path, '/');
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const char *const name = (name_try == NULL) ? path : name_try + 1;
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size_t const new_prefix_len = strlen(new_prefix);
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size_t const name_size = strlen(name) + 1;
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size_t const size = new_prefix_len + 1 + name_size;
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char *const s = malloc(size);
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if (s != NULL) {
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memcpy(s, new_prefix, new_prefix_len);
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s [new_prefix_len] = '/';
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memcpy(s + new_prefix_len + 1, name, name_size);
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}
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return s;
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}
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char *rtems_media_append_minor(
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const char *path,
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rtems_device_minor_number minor
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)
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{
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size_t const size = strlen(path) + 1 + 10 + 1;
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char *const s = malloc(size);
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if (s != NULL) {
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#ifndef NDEBUG
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int rv =
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#endif
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snprintf(s, size, "%s-%" PRIu32, path, minor);
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assert(rv < (int) size);
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}
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return s;
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}
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