rt-thread/components/finsh/msh_file.c

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/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
* Change Logs:
* Date Author Notes
* 2015-09-25 Bernard the first verion for FinSH
*/
#include <rtthread.h>
#if defined(FINSH_USING_MSH) && defined(RT_USING_DFS)
#include <finsh.h>
#include "msh.h"
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#include <dfs_posix.h>
static int msh_readline(int fd, char *line_buf, int size)
{
char ch;
int index = 0;
do
{
if (read(fd, &ch, 1) != 1)
{
/* nothing in this file */
return 0;
}
}
while (ch == '\n' || ch == '\r');
/* set the first character */
line_buf[index ++] = ch;
while (index < size)
{
if (read(fd, &ch, 1) == 1)
{
if (ch == '\n' || ch == '\r')
{
line_buf[index] = '\0';
break;
}
line_buf[index++] = ch;
}
else
{
line_buf[index] = '\0';
break;
}
}
return index;
}
int msh_exec_script(const char *cmd_line, int size)
{
int ret;
int fd = -1;
char *pg_name;
int length, cmd_length = 0;
if (size == 0) return -RT_ERROR;
/* get the length of command0 */
while ((cmd_line[cmd_length] != ' ' && cmd_line[cmd_length] != '\t') && cmd_length < size)
cmd_length ++;
/* get name length */
length = cmd_length + 32;
/* allocate program name memory */
pg_name = (char *) rt_malloc(length);
if (pg_name == RT_NULL) return -RT_ENOMEM;
/* copy command0 */
memcpy(pg_name, cmd_line, cmd_length);
pg_name[cmd_length] = '\0';
if (strstr(pg_name, ".sh") != RT_NULL || strstr(pg_name, ".SH") != RT_NULL)
{
/* try to open program */
fd = open(pg_name, O_RDONLY, 0);
/* search in /bin path */
if (fd < 0)
{
rt_snprintf(pg_name, length - 1, "/bin/%.*s", cmd_length, cmd_line);
fd = open(pg_name, O_RDONLY, 0);
}
}
rt_free(pg_name);
if (fd >= 0)
{
/* found script */
char *line_buf;
int length;
line_buf = (char *) rt_malloc(RT_CONSOLEBUF_SIZE);
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if (line_buf == RT_NULL)
{
close(fd);
return -RT_ENOMEM;
}
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/* read line by line and then exec it */
do
{
length = msh_readline(fd, line_buf, RT_CONSOLEBUF_SIZE);
if (length > 0)
{
char ch = '\0';
int index;
for (index = 0; index < length; index ++)
{
ch = line_buf[index];
if (ch == ' ' || ch == '\t') continue;
else break;
}
if (ch != '#') /* not a comment */
msh_exec(line_buf, length);
}
}
while (length > 0);
close(fd);
rt_free(line_buf);
ret = 0;
}
else
{
ret = -1;
}
return ret;
}
#ifdef DFS_USING_WORKDIR
extern char working_directory[];
#endif
int cmd_ls(int argc, char **argv)
{
extern void ls(const char *pathname);
if (argc == 1)
{
#ifdef DFS_USING_WORKDIR
ls(working_directory);
#else
ls("/");
#endif
}
else
{
ls(argv[1]);
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_ls, __cmd_ls, List information about the FILEs.);
int cmd_cp(int argc, char **argv)
{
void copy(const char *src, const char *dst);
if (argc != 3)
{
rt_kprintf("Usage: cp SOURCE DEST\n");
rt_kprintf("Copy SOURCE to DEST.\n");
}
else
{
copy(argv[1], argv[2]);
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_cp, __cmd_cp, Copy SOURCE to DEST.);
int cmd_mv(int argc, char **argv)
{
if (argc != 3)
{
rt_kprintf("Usage: mv SOURCE DEST\n");
rt_kprintf("Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.\n");
}
else
{
int fd;
char *dest = RT_NULL;
rt_kprintf("%s => %s\n", argv[1], argv[2]);
fd = open(argv[2], O_DIRECTORY, 0);
if (fd >= 0)
{
char *src;
close(fd);
/* it's a directory */
dest = (char *)rt_malloc(DFS_PATH_MAX);
if (dest == RT_NULL)
{
rt_kprintf("out of memory\n");
return -RT_ENOMEM;
}
src = argv[1] + rt_strlen(argv[1]);
while (src != argv[1])
{
if (*src == '/') break;
src --;
}
rt_snprintf(dest, DFS_PATH_MAX - 1, "%s/%s", argv[2], src);
}
else
{
fd = open(argv[2], O_RDONLY, 0);
if (fd >= 0)
{
close(fd);
unlink(argv[2]);
}
dest = argv[2];
}
rename(argv[1], dest);
if (dest != RT_NULL && dest != argv[2]) rt_free(dest);
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_mv, __cmd_mv, Rename SOURCE to DEST.);
int cmd_cat(int argc, char **argv)
{
int index;
extern void cat(const char *filename);
if (argc == 1)
{
rt_kprintf("Usage: cat [FILE]...\n");
rt_kprintf("Concatenate FILE(s)\n");
return 0;
}
for (index = 1; index < argc; index ++)
{
cat(argv[index]);
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_cat, __cmd_cat, Concatenate FILE(s));
static void directory_delete_for_msh(const char *pathname, char f, char v)
{
DIR *dir = NULL;
struct dirent *dirent = NULL;
char *full_path;
if (pathname == RT_NULL)
return;
full_path = (char *)rt_malloc(DFS_PATH_MAX);
if (full_path == RT_NULL)
return;
dir = opendir(pathname);
if (dir == RT_NULL)
{
if (f == 0)
{
rt_kprintf("cannot remove '%s'\n", pathname);
}
rt_free(full_path);
return;
}
while (1)
{
dirent = readdir(dir);
if (dirent == RT_NULL)
break;
if (rt_strcmp(".", dirent->d_name) != 0 &&
rt_strcmp("..", dirent->d_name) != 0)
{
rt_sprintf(full_path, "%s/%s", pathname, dirent->d_name);
if (dirent->d_type == DT_REG)
{
if (unlink(full_path) != 0)
{
if (f == 0)
rt_kprintf("cannot remove '%s'\n", full_path);
}
else if (v)
{
rt_kprintf("removed '%s'\n", full_path);
}
}
else if (dirent->d_type == DT_DIR)
{
directory_delete_for_msh(full_path, f, v);
}
}
}
closedir(dir);
rt_free(full_path);
if (unlink(pathname) != 0)
{
if (f == 0)
rt_kprintf("cannot remove '%s'\n", pathname);
}
else if (v)
{
rt_kprintf("removed directory '%s'\n", pathname);
}
}
int cmd_rm(int argc, char **argv)
{
int index, n;
char f = 0, r = 0, v = 0;
if (argc == 1)
{
rt_kprintf("Usage: rm option(s) FILE...\n");
rt_kprintf("Remove (unlink) the FILE(s).\n");
return 0;
}
if (argv[1][0] == '-')
{
for (n = 0; argv[1][n]; n++)
{
switch (argv[1][n])
{
case 'f': f = 1; break;
case 'r': r = 1; break;
case 'v': v = 1; break;
case '-': break;
default:
rt_kprintf("Error: Bad option: %c\n", argv[1][n]);
return 0;
}
}
argc -= 1;
argv = argv + 1;
}
for (index = 1; index < argc; index ++)
{
struct stat s;
if (stat (argv[index], &s) == 0)
{
if (s.st_mode & S_IFDIR)
{
if (r == 0)
rt_kprintf("cannot remove '%s': Is a directory\n", argv[index]);
else
directory_delete_for_msh(argv[index], f, v);
}
else if (s.st_mode & S_IFREG)
{
if (unlink(argv[index]) != 0)
{
if (f == 0)
rt_kprintf("cannot remove '%s'\n", argv[index]);
}
else if (v)
{
rt_kprintf("removed '%s'\n", argv[index]);
}
}
}
else if (f == 0)
{
rt_kprintf("cannot remove '%s': No such file or directory\n", argv[index]);
}
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_rm, __cmd_rm, Remove(unlink) the FILE(s).);
#ifdef DFS_USING_WORKDIR
int cmd_cd(int argc, char **argv)
{
if (argc == 1)
{
rt_kprintf("%s\n", working_directory);
}
else if (argc == 2)
{
if (chdir(argv[1]) != 0)
{
rt_kprintf("No such directory: %s\n", argv[1]);
}
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_cd, __cmd_cd, Change the shell working directory.);
int cmd_pwd(int argc, char **argv)
{
rt_kprintf("%s\n", working_directory);
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_pwd, __cmd_pwd, Print the name of the current working directory.);
#endif
int cmd_mkdir(int argc, char **argv)
{
if (argc == 1)
{
rt_kprintf("Usage: mkdir [OPTION] DIRECTORY\n");
rt_kprintf("Create the DIRECTORY, if they do not already exist.\n");
}
else
{
mkdir(argv[1], 0);
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_mkdir, __cmd_mkdir, Create the DIRECTORY.);
int cmd_mkfs(int argc, char **argv)
{
int result = 0;
char *type = "elm"; /* use the default file system type as 'fatfs' */
if (argc == 2)
{
result = dfs_mkfs(type, argv[1]);
}
else if (argc == 4)
{
if (strcmp(argv[1], "-t") == 0)
{
type = argv[2];
result = dfs_mkfs(type, argv[3]);
}
}
else
{
rt_kprintf("Usage: mkfs [-t type] device\n");
return 0;
}
if (result != RT_EOK)
{
rt_kprintf("mkfs failed, result=%d\n", result);
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_mkfs, __cmd_mkfs, format disk with file system);
extern int df(const char *path);
int cmd_df(int argc, char** argv)
{
if (argc != 2)
{
df("/");
}
else
{
if ((strcmp(argv[1], "--help") == 0) || (strcmp(argv[1], "-h") == 0))
{
rt_kprintf("df [path]\n");
}
else
{
df(argv[1]);
}
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_df, __cmd_df, disk free);
int cmd_echo(int argc, char** argv)
{
if (argc == 2)
{
rt_kprintf("%s\n", argv[1]);
}
else if (argc == 3)
{
int fd;
fd = open(argv[2], O_RDWR | O_APPEND | O_CREAT, 0);
if (fd >= 0)
{
write (fd, argv[1], strlen(argv[1]));
close(fd);
}
else
{
rt_kprintf("open file:%s failed!\n", argv[2]);
}
}
else
{
rt_kprintf("Usage: echo \"string\" [filename]\n");
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(cmd_echo, __cmd_echo, echo string to file);
#endif /* defined(FINSH_USING_MSH) && defined(RT_USING_DFS) */