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Implement ISOBUS File Server (FS) Interface as a Personal Project

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Introduce the ISOBUS File Server (FS) interface, compatible with ISO
11783-13. The implementation utilizes the kernel's existing CAN J1939
socket support.

For testing following setup can be used:
ip link add type vcan
ip l s dev vcan0 up

j1939acd -r 64-95 -c /tmp/1122334455667788.jacd 1122334455667788 vcan0 &
j1939acd -r 96-127 -c /tmp/1122334455667789.jacd 1122334455667789 vcan0 &

sleep 1

isobusfs-srv -i vcan0 -n 1122334455667788 -v vol1:/path/to/export/
isobusfs-cli -i vcan0 -n 0x1122334455667789 -m 0x1122334455667788 -I

Interactive mode currently support following commands:
exit - exit interactive mode
quit - exit interactive mode
help - show this help
dmesg - show log buffer
selftest - run selftest
ls - list directory
ll - list directory with long listing format
cd - change directory
pwd - print name of current/working directory
get - get file

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
This commit is contained in:
Oleksij Rempel
2024-02-02 13:44:07 +01:00
committed by Oleksij Rempel
parent 6004c64f06
commit 42edaeaf52
30 changed files with 9750 additions and 0 deletions
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isobusfs/isobusfs_cmn_dh.c
+45
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// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: 2023 Oleksij Rempel <linux@rempel-privat.de>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "isobusfs_cmn.h"
#include <stdbool.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
int isobusfs_cmn_dh_validate_dir_path(const char *path, bool writable)
{
struct stat path_stat;
int mode = R_OK;
int ret;
mode |= writable ? W_OK : 0;
ret = access(path, mode);
if (ret == -1) {
ret = -errno;
pr_err("failed to acces path %s, for read %s. %s", path,
writable ? "and write" : "", strerror(ret));
return ret;
}
ret = stat(path, &path_stat);
if (ret == -1) {
ret = -errno;
pr_err("failed to get stat information on path %s. %s", path,
strerror(ret));
return ret;
}
if (!S_ISDIR(path_stat.st_mode)) {
pr_err("path %s is not a directory", path);
return -ENOTDIR;
}
return 0;
}