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/**
* @file
*
* @brief Block Device Partition Management
* @ingroup rtems_bdpart
*/
/*
* Copyright (c) 2009, 2010
* embedded brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rtems.h>
#include <rtems/bdpart.h>
#include <rtems/libio.h>
rtems_status_code rtems_bdpart_mount(
const char *disk_name,
const rtems_bdpart_partition *pt __attribute__((unused)),
size_t count,
const char *mount_base
)
{
rtems_status_code esc = RTEMS_SUCCESSFUL;
const char *disk_file_name = strrchr( disk_name, '/');
char *logical_disk_name = NULL;
char *logical_disk_marker = NULL;
char *mount_point = NULL;
char *mount_marker = NULL;
size_t disk_file_name_size = 0;
size_t disk_name_size = strlen( disk_name);
size_t mount_base_size = strlen( mount_base);
size_t i = 0;
/* Create logical disk name base */
logical_disk_name = malloc( disk_name_size + RTEMS_BDPART_NUMBER_SIZE);
if (logical_disk_name == NULL) {
return RTEMS_NO_MEMORY;
}
strncpy( logical_disk_name, disk_name, disk_name_size);
/* Get disk file name */
if (disk_file_name != NULL) {
disk_file_name += 1;
disk_file_name_size = strlen( disk_file_name);
} else {
disk_file_name = disk_name;
disk_file_name_size = disk_name_size;
}
/* Create mount point base */
mount_point = malloc( mount_base_size + 1 + disk_file_name_size + RTEMS_BDPART_NUMBER_SIZE);
if (mount_point == NULL) {
esc = RTEMS_NO_MEMORY;
goto cleanup;
}
strncpy( mount_point, mount_base, mount_base_size);
mount_point [mount_base_size] = '/';
strncpy( mount_point + mount_base_size + 1, disk_file_name, disk_file_name_size);
/* Markers */
logical_disk_marker = logical_disk_name + disk_name_size;
mount_marker = mount_point + mount_base_size + 1 + disk_file_name_size;
/* Mount supported file systems for each partition */
for (i = 0; i < count; ++i) {
/* Create logical disk name */
int rv = snprintf( logical_disk_marker, RTEMS_BDPART_NUMBER_SIZE, "%zu", i + 1);
if (rv >= RTEMS_BDPART_NUMBER_SIZE) {
esc = RTEMS_INVALID_NAME;
goto cleanup;
}
/* Create mount point */
strncpy( mount_marker, logical_disk_marker, RTEMS_BDPART_NUMBER_SIZE);
rv = rtems_mkdir( mount_point, S_IRWXU | S_IRWXG | S_IRWXO);
if (rv != 0) {
esc = RTEMS_IO_ERROR;
goto cleanup;
}
/* Mount */
rv = mount(
logical_disk_name,
mount_point,
"msdos",
0,
NULL
);
if (rv != 0) {
rmdir( mount_point);
}
}
cleanup:
free( logical_disk_name);
free( mount_point);
return esc;
}
rtems_status_code rtems_bdpart_unmount(
const char *disk_name,
const rtems_bdpart_partition *pt __attribute__((unused)),
size_t count,
const char *mount_base
)
{
rtems_status_code esc = RTEMS_SUCCESSFUL;
const char *disk_file_name = strrchr( disk_name, '/');
char *mount_point = NULL;
char *mount_marker = NULL;
size_t disk_file_name_size = 0;
size_t disk_name_size = strlen( disk_name);
size_t mount_base_size = strlen( mount_base);
size_t i = 0;
/* Get disk file name */
if (disk_file_name != NULL) {
disk_file_name += 1;
disk_file_name_size = strlen( disk_file_name);
} else {
disk_file_name = disk_name;
disk_file_name_size = disk_name_size;
}
/* Create mount point base */
mount_point = malloc( mount_base_size + 1 + disk_file_name_size + RTEMS_BDPART_NUMBER_SIZE);
if (mount_point == NULL) {
esc = RTEMS_NO_MEMORY;
goto cleanup;
}
strncpy( mount_point, mount_base, mount_base_size);
mount_point [mount_base_size] = '/';
strncpy( mount_point + mount_base_size + 1, disk_file_name, disk_file_name_size);
/* Marker */
mount_marker = mount_point + mount_base_size + 1 + disk_file_name_size;
/* Mount supported file systems for each partition */
for (i = 0; i < count; ++i) {
/* Create mount point */
int rv = snprintf( mount_marker, RTEMS_BDPART_NUMBER_SIZE, "%zu", i + 1);
if (rv >= RTEMS_BDPART_NUMBER_SIZE) {
esc = RTEMS_INVALID_NAME;
goto cleanup;
}
/* Unmount */
rv = unmount( mount_point);
if (rv == 0) {
/* Remove mount point */
rv = rmdir( mount_point);
if (rv != 0) {
esc = RTEMS_IO_ERROR;
goto cleanup;
}
}
}
cleanup:
free( mount_point);
return esc;
}
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