5572819bb1
fixes for errors reported by nxstyle tool Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
144 lines
3.5 KiB
C
144 lines
3.5 KiB
C
/****************************************************************************
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* apps/netutils/webserver/httpd_mmap.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <limits.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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#include <debug.h>
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#include "netutils/httpd.h"
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#include "httpd.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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int httpd_mmap_open(const char *name, struct httpd_fs_file *file)
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{
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char path[PATH_MAX];
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struct stat st;
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if (sizeof path < snprintf(path, sizeof path, "%s%s",
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CONFIG_NETUTILS_HTTPD_PATH, name))
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{
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errno = ENAMETOOLONG;
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return ERROR;
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}
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/* XXX: awaiting fstat to avoid a race */
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if (-1 == stat(path, &st))
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{
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return ERROR;
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}
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if (S_ISDIR(st.st_mode))
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{
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errno = EISDIR;
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return ERROR;
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}
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if (!S_ISREG(st.st_mode))
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{
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errno = ENOENT;
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return ERROR;
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}
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if (st.st_size > INT_MAX)
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{
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errno = EFBIG;
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return ERROR;
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}
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file->len = (int) st.st_size;
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/* SUS3: "If len is zero, mmap() shall fail and no mapping shall
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* be established."
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*/
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if (st.st_size == 0)
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{
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return OK;
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}
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file->fd = open(path, O_RDONLY);
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if (file->fd == -1)
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{
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return ERROR;
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}
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file->data = mmap(NULL, st.st_size, PROT_READ,
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MAP_SHARED | MAP_FILE, file->fd, 0);
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if (file->data == MAP_FAILED)
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{
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close(file->fd);
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return ERROR;
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}
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return OK;
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}
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int httpd_mmap_close(struct httpd_fs_file *file)
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{
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if (file->len == 0)
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{
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return OK;
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}
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#ifdef CONFIG_FS_RAMMAP
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if (-1 == munmap(file->data, file->len))
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{
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return ERROR;
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}
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#endif
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if (-1 == close(file->fd))
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{
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return ERROR;
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}
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return OK;
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}
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