167 lines
2.9 KiB
C
167 lines
2.9 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <misc/printk.h>
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#include <shell/shell.h>
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#include <init.h>
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#include <fs.h>
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#define MAX_PATH_LEN 128
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static char cwd[MAX_PATH_LEN] = "/";
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static int cmd_mkdir(int argc, char *argv[])
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{
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int res;
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char path[MAX_PATH_LEN];
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if (argc < 2) {
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printk("Missing argument\n");
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return 0;
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}
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if (argv[1][0] == '/') {
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strncpy(path, argv[1], sizeof(path) - 1);
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path[MAX_PATH_LEN - 1] = '\0';
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} else {
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if (strcmp(cwd, "/") == 0) {
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snprintf(path, sizeof(path), "/%s", argv[1]);
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} else {
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snprintf(path, sizeof(path), "%s/%s", cwd, argv[1]);
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}
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}
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res = fs_mkdir(path);
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if (res) {
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printk("Error creating dir[%d]\n", res);
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return res;
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}
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return 0;
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}
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static int cmd_ls(int argc, char *argv[])
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{
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char path[MAX_PATH_LEN];
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fs_dir_t dir;
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int err;
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if (argc < 2) {
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strcpy(path, cwd);
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} else if (argv[1][0] == '/') {
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strncpy(path, argv[1], sizeof(path) - 1);
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path[MAX_PATH_LEN - 1] = '\0';
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} else {
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if (strcmp(cwd, "/") == 0) {
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snprintf(path, sizeof(path), "/%s", argv[1]);
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} else {
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snprintf(path, sizeof(path), "%s/%s", cwd, argv[1]);
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}
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}
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err = fs_opendir(&dir, path);
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if (err) {
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printk("Unable to open %s (err %d)\n", path, err);
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return 0;
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}
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while (1) {
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struct fs_dirent entry;
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err = fs_readdir(&dir, &entry);
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if (err) {
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printk("Unable to read directory\n");
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break;
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}
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/* Check for end of directory listing */
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if (entry.name[0] == '\0') {
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break;
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}
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if (entry.type == FS_DIR_ENTRY_DIR) {
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printk("%s/\n", entry.name);
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} else {
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printk("%s\n", entry.name);
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}
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}
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fs_closedir(&dir);
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return 0;
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}
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static int cmd_pwd(int argc, char *argv[])
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{
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printk("%s\n", cwd);
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return 0;
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}
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static int cmd_cd(int argc, char *argv[])
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{
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char path[MAX_PATH_LEN];
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struct fs_dirent entry;
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int err;
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if (argc < 2) {
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strcpy(cwd, "/");
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return 0;
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}
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if (strcmp(argv[1], "..") == 0) {
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char *prev = strrchr(cwd, '/');
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if (!prev || prev == cwd) {
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strcpy(cwd, "/");
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} else {
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*prev = '\0';
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}
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/* No need to test that a parent exists */
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return 0;
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}
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if (argv[1][0] == '/') {
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strncpy(path, argv[1], sizeof(path) - 1);
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path[MAX_PATH_LEN - 1] = '\0';
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} else {
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if (strcmp(cwd, "/") == 0) {
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snprintf(path, sizeof(path), "/%s", argv[1]);
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} else {
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snprintf(path, sizeof(path), "%s/%s", cwd, argv[1]);
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}
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}
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err = fs_stat(path, &entry);
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if (err) {
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printk("%s doesn't exist\n", path);
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return 0;
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}
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if (entry.type != FS_DIR_ENTRY_DIR) {
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printk("%s is not a directory\n", path);
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return 0;
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}
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strcpy(cwd, path);
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return 0;
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}
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struct shell_cmd fs_commands[] = {
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{ "ls", cmd_ls, "List files in current directory" },
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{ "cd", cmd_cd, "Change working directory" },
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{ "pwd", cmd_pwd, "Print current working directory" },
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{ "mkdir", cmd_mkdir, "Create directory" },
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{ NULL, NULL }
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};
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SHELL_REGISTER("fs", fs_commands);
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