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/**
* @file
*
* File system mount functions.
*/
/*===============================================================*\
| Project: RTEMS fsmount |
+-----------------------------------------------------------------+
| File: fsmount.c |
+-----------------------------------------------------------------+
| Copyright (c) 2003 IMD |
| Ingenieurbuero fuer Microcomputertechnik Th. Doerfler |
| <Thomas.Doerfler@imd-systems.de> |
| all rights reserved |
+-----------------------------------------------------------------+
| this file contains the fsmount functions. These functions |
| are used to mount a list of filesystems (and create their mount |
| points before) |
| |
| The license and distribution terms for this file may be |
| found in the file LICENSE in this distribution or at |
| http://www.rtems.com/license/LICENSE. |
| |
+-----------------------------------------------------------------+
| date history ID |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 02.07.03 creation doe |
\*===============================================================*/
#ifndef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems.h>
#include <rtems/fsmount.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <rtems/imfs.h>
#include <sys/stat.h>
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
int rtems_fsmount_create_mount_point
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| This function will create the mount point given |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
const char *mount_point
)
/*-------------------------------------------------------------------------*\
| Return Value: |
| 0, if success, -1 and errno if failed |
\*=========================================================================*/
{
int rc = 0;
char *tok_buffer = NULL;
char *token = NULL;
int token_len;
size_t total_len;
IMFS_token_types token_type;
struct stat file_info;
/*
* allocate temp memory to rebuild path name
*/
tok_buffer = calloc(strlen(mount_point)+1,sizeof(char));
token = tok_buffer;
total_len = 0;
do {
/*
* scan through given string, one segment at a time
*/
token_type = IMFS_get_token(mount_point+total_len,token,&token_len);
total_len += token_len;
strncpy(tok_buffer,mount_point,total_len);
tok_buffer[total_len] = '\0';
if ((token_type != IMFS_NO_MORE_PATH) &&
(token_type != IMFS_CURRENT_DIR) &&
(token_type != IMFS_INVALID_TOKEN)) {
/*
* check, whether segment exists
*/
if (0 != stat(tok_buffer,&file_info)) {
/*
* if not, create directory
*/
rc = mknod(tok_buffer,S_IRWXU | S_IRWXG | S_IRWXO | S_IFDIR,0);
}
}
} while ((rc == 0) &&
(token_type != IMFS_NO_MORE_PATH) &&
(token_type != IMFS_INVALID_TOKEN));
/*
* return token buffer to heap
*/
if (tok_buffer != NULL) {
free(tok_buffer);
}
return rc;
}
/*=========================================================================*\
| Function: |
\*-------------------------------------------------------------------------*/
int rtems_fsmount
(
/*-------------------------------------------------------------------------*\
| Purpose: |
| This function will create the mount points listed and mount the file |
| systems listed in the calling parameters |
+---------------------------------------------------------------------------+
| Input Parameters: |
\*-------------------------------------------------------------------------*/
const rtems_fstab_entry *fstab_ptr,
size_t fstab_count,
size_t *fail_idx
)
/*-------------------------------------------------------------------------*\
| Return Value: |
| 0, if success, -1 and errno if failed |
\*=========================================================================*/
{
int rc = 0;
int tmp_rc;
size_t fstab_idx = 0;
rtems_filesystem_mount_table_entry_t *tmp_mt_entry;
bool terminate = false;
/*
* scan through all fstab entries;
*/
while (!terminate &&
(fstab_idx < fstab_count)) {
tmp_rc = 0;
/*
* create mount point
*/
if (tmp_rc == 0) {
tmp_rc = rtems_fsmount_create_mount_point(fstab_ptr->mount_point);
if (tmp_rc != 0) {
if (0 != (fstab_ptr->report_reasons & FSMOUNT_MNTPNT_CRTERR)) {
fprintf(stdout,"fsmount: creation of mount point \"%s\" failed: %s\n",
fstab_ptr->mount_point,
strerror(errno));
}
if (0 != (fstab_ptr->abort_reasons & FSMOUNT_MNTPNT_CRTERR)) {
terminate = true;
rc = tmp_rc;
}
}
}
/*
* mount device to given mount point
*/
if (tmp_rc == 0) {
tmp_rc = mount(&tmp_mt_entry,
fstab_ptr->fs_ops,
fstab_ptr->mount_options,
fstab_ptr->dev,
fstab_ptr->mount_point);
if (tmp_rc != 0) {
if (0 != (fstab_ptr->report_reasons & FSMOUNT_MNT_FAILED)) {
fprintf(stdout,"fsmount: mounting of \"%s\" to"
" \"%s\" failed: %s\n",
fstab_ptr->dev,
fstab_ptr->mount_point,
strerror(errno));
}
if (0 != (fstab_ptr->abort_reasons & FSMOUNT_MNT_FAILED)) {
terminate = true;
rc = tmp_rc;
}
}
else {
if (0 != (fstab_ptr->report_reasons & FSMOUNT_MNT_OK)) {
fprintf(stdout,"fsmount: mounting of \"%s\" to"
" \"%s\" succeeded\n",
fstab_ptr->dev,
fstab_ptr->mount_point);
}
if (0 != (fstab_ptr->abort_reasons & FSMOUNT_MNT_OK)) {
terminate = true;
}
}
}
/*
* proceed to next entry
*/
if (!terminate) {
fstab_ptr++;
fstab_idx++;
}
}
if (fail_idx != NULL) {
*fail_idx = fstab_idx;
}
return rc;
}
|
