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px4_autopilot/apps/nshlib/nsh_fscmds.c

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/****************************************************************************
* apps/nshlib/nsh_fscmds.c
*
* Copyright (C) 2007-2009, 2011-2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#if CONFIG_NFILE_DESCRIPTORS > 0
# include <sys/stat.h>
# include <fcntl.h>
# if !defined(CONFIG_DISABLE_MOUNTPOINT)
# ifdef CONFIG_FS_READABLE /* Need at least one filesytem in configuration */
# include <sys/mount.h>
# include <nuttx/ramdisk.h>
# endif
# ifdef CONFIG_FS_FAT
# include <nuttx/fs/mkfatfs.h>
# endif
# ifdef CONFIG_NFS
# include <sys/socket.h>
# include <netinet/in.h>
# include <nuttx/fs/nfs.h>
# endif
# ifdef CONFIG_RAMLOG_SYSLOG
# include <nuttx/ramlog.h>
# endif
#endif
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <dirent.h>
#include <limits.h>
#include <libgen.h>
#include <errno.h>
#include <debug.h>
#include "nsh.h"
#include "nsh_console.h"
/****************************************************************************
* Definitions
****************************************************************************/
#define LSFLAGS_SIZE 1
#define LSFLAGS_LONG 2
#define LSFLAGS_RECURSIVE 4
/****************************************************************************
* Private Types
****************************************************************************/
typedef int (*direntry_handler_t)(FAR struct nsh_vtbl_s *, const char *,
struct dirent *, void *);
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/* Common buffer for file I/O. Note the use of this common buffer precludes
* multiple copies of NSH running concurrently. It should be allocated per
* NSH instance and retained in the "vtbl" as is done for the telnet
* connection.
*/
static char g_iobuffer[IOBUFFERSIZE];
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: trim_dir
****************************************************************************/
static void trim_dir(char *arg)
{
/* Skip any trailing '/' characters (unless it is also the leading '/') */
int len = strlen(arg) - 1;
while (len > 0 && arg[len] == '/')
{
arg[len] = '\0';
len--;
}
}
/****************************************************************************
* Name: nsh_getdirpath
****************************************************************************/
static char *nsh_getdirpath(const char *path, const char *file)
{
/* Handle the case where all that is left is '/' */
if (strcmp(path, "/") == 0)
{
sprintf(g_iobuffer, "/%s", file);
}
else
{
sprintf(g_iobuffer, "%s/%s", path, file);
}
g_iobuffer[PATH_MAX] = '\0';
return strdup(g_iobuffer);
}
/****************************************************************************
* Name: foreach_direntry
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0
static int foreach_direntry(FAR struct nsh_vtbl_s *vtbl, const char *cmd, const char *dirpath,
direntry_handler_t handler, void *pvarg)
{
DIR *dirp;
int ret = OK;
/* Trim trailing '/' from directory names */
#ifdef CONFIG_NSH_FULLPATH
trim_dir(arg);
#endif
/* Open the directory */
dirp = opendir(dirpath);
if (!dirp)
{
/* Failed to open the directory */
nsh_output(vtbl, g_fmtnosuch, cmd, "directory", dirpath);
return ERROR;
}
/* Read each directory entry */
for (;;)
{
struct dirent *entryp = readdir(dirp);
if (!entryp)
{
/* Finished with this directory */
break;
}
/* Call the handler with this directory entry */
if (handler(vtbl, dirpath, entryp, pvarg) < 0)
{
/* The handler reported a problem */
ret = ERROR;
break;
}
}
closedir(dirp);
return ret;
}
#endif
/****************************************************************************
* Name: ls_specialdir
****************************************************************************/
static inline int ls_specialdir(const char *dir)
{
/* '.' and '..' directories are not listed like normal directories */
return (strcmp(dir, ".") == 0 || strcmp(dir, "..") == 0);
}
/****************************************************************************
* Name: ls_handler
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0
static int ls_handler(FAR struct nsh_vtbl_s *vtbl, const char *dirpath, struct dirent *entryp, void *pvarg)
{
unsigned int lsflags = (unsigned int)pvarg;
int ret;
/* Check if any options will require that we stat the file */
if ((lsflags & (LSFLAGS_SIZE|LSFLAGS_LONG)) != 0)
{
struct stat buf;
char *fullpath = nsh_getdirpath(dirpath, entryp->d_name);
/* Yes, stat the file */
ret = stat(fullpath, &buf);
free(fullpath);
if (ret != 0)
{
nsh_output(vtbl, g_fmtcmdfailed, "ls", "stat", NSH_ERRNO);
return ERROR;
}
if ((lsflags & LSFLAGS_LONG) != 0)
{
char details[] = "----------";
if (S_ISDIR(buf.st_mode))
{
details[0]='d';
}
else if (S_ISCHR(buf.st_mode))
{
details[0]='c';
}
else if (S_ISBLK(buf.st_mode))
{
details[0]='b';
}
if ((buf.st_mode & S_IRUSR) != 0)
{
details[1]='r';
}
if ((buf.st_mode & S_IWUSR) != 0)
{
details[2]='w';
}
if ((buf.st_mode & S_IXUSR) != 0)
{
details[3]='x';
}
if ((buf.st_mode & S_IRGRP) != 0)
{
details[4]='r';
}
if ((buf.st_mode & S_IWGRP) != 0)
{
details[5]='w';
}
if ((buf.st_mode & S_IXGRP) != 0)
{
details[6]='x';
}
if ((buf.st_mode & S_IROTH) != 0)
{
details[7]='r';
}
if ((buf.st_mode & S_IWOTH) != 0)
{
details[8]='w';
}
if ((buf.st_mode & S_IXOTH) != 0)
{
details[9]='x';
}
nsh_output(vtbl, " %s", details);
}
if ((lsflags & LSFLAGS_SIZE) != 0)
{
nsh_output(vtbl, "%8d", buf.st_size);
}
}
/* then provide the filename that is common to normal and verbose output */
#ifdef CONFIG_NSH_FULLPATH
nsh_output(vtbl, " %s/%s", arg, entryp->d_name);
#else
nsh_output(vtbl, " %s", entryp->d_name);
#endif
if (DIRENT_ISDIRECTORY(entryp->d_type) && !ls_specialdir(entryp->d_name))
{
nsh_output(vtbl, "/\n");
}
else
{
nsh_output(vtbl, "\n");
}
return OK;
}
#endif
/****************************************************************************
* Name: ls_recursive
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0
static int ls_recursive(FAR struct nsh_vtbl_s *vtbl, const char *dirpath,
struct dirent *entryp, void *pvarg)
{
int ret = OK;
/* Is this entry a directory (and not one of the special directories, . and ..)? */
if (DIRENT_ISDIRECTORY(entryp->d_type) && !ls_specialdir(entryp->d_name))
{
/* Yes.. */
char *newpath;
newpath = nsh_getdirpath(dirpath, entryp->d_name);
/* List the directory contents */
nsh_output(vtbl, "%s:\n", newpath);
/* Traverse the directory */
ret = foreach_direntry(vtbl, "ls", newpath, ls_handler, pvarg);
if (ret == 0)
{
/* Then recurse to list each directory within the directory */
ret = foreach_direntry(vtbl, "ls", newpath, ls_recursive, pvarg);
free(newpath);
}
}
return ret;
}
#endif
/****************************************************************************
* Name: cat_common
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0
#ifndef CONFIG_NSH_DISABLE_CAT
static int cat_common(FAR struct nsh_vtbl_s *vtbl, FAR const char *cmd,
FAR const char *filename)
{
char buffer[IOBUFFERSIZE];
int fd;
int ret = OK;
/* Open the file for reading */
fd = open(filename, O_RDONLY);
if (fd < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, cmd, "open", NSH_ERRNO);
return ERROR;
}
/* And just dump it byte for byte into stdout */
for (;;)
{
int nbytesread = read(fd, buffer, IOBUFFERSIZE);
/* Check for read errors */
if (nbytesread < 0)
{
int errval = errno;
/* EINTR is not an error (but will stop stop the cat) */
#ifndef CONFIG_DISABLE_SIGNALS
if (errval == EINTR)
{
nsh_output(vtbl, g_fmtsignalrecvd, cmd);
}
else
#endif
{
nsh_output(vtbl, g_fmtcmdfailed, cmd, "read", NSH_ERRNO_OF(errval));
}
ret = ERROR;
break;
}
/* Check for data successfully read */
else if (nbytesread > 0)
{
int nbyteswritten = 0;
while (nbyteswritten < nbytesread)
{
ssize_t n = nsh_write(vtbl, buffer, nbytesread);
if (n < 0)
{
int errval = errno;
/* EINTR is not an error (but will stop stop the cat) */
#ifndef CONFIG_DISABLE_SIGNALS
if (errval == EINTR)
{
nsh_output(vtbl, g_fmtsignalrecvd, cmd);
}
else
#endif
{
nsh_output(vtbl, g_fmtcmdfailed, cmd, "write", NSH_ERRNO);
}
ret = ERROR;
break;
}
else
{
nbyteswritten += n;
}
}
}
/* Otherwise, it is the end of file */
else
{
break;
}
}
(void)close(fd);
return ret;
}
#endif
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: cmd_cat
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0
#ifndef CONFIG_NSH_DISABLE_CAT
int cmd_cat(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char *fullpath;
int i;
int ret = OK;
/* Loop for each file name on the command line */
for (i = 1; i < argc && ret == OK; i++)
{
/* Get the fullpath to the file */
fullpath = nsh_getfullpath(vtbl, argv[i]);
if (!fullpath)
{
ret = ERROR;
}
else
{
/* Dump the file to the console */
ret = cat_common(vtbl, argv[0], fullpath);
/* Free the allocated full path */
nsh_freefullpath(fullpath);
}
}
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_dmesg
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_SYSLOG) && \
defined(CONFIG_RAMLOG_SYSLOG) && !defined(CONFIG_NSH_DISABLE_DMESG)
int cmd_dmesg(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
return cat_common(vtbl, argv[0], CONFIG_SYSLOG_DEVPATH);
}
#endif
/****************************************************************************
* Name: cmd_cp
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0
#ifndef CONFIG_NSH_DISABLE_CP
int cmd_cp(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
struct stat buf;
char *srcpath = NULL;
char *destpath = NULL;
char *allocpath = NULL;
int oflags = O_WRONLY|O_CREAT|O_TRUNC;
int rdfd;
int wrfd;
int ret = ERROR;
/* Get the full path to the source file */
srcpath = nsh_getfullpath(vtbl, argv[1]);
if (!srcpath)
{
goto errout;
}
/* Open the source file for reading */
rdfd = open(srcpath, O_RDONLY);
if (rdfd < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "open", NSH_ERRNO);
goto errout_with_srcpath;
}
/* Get the full path to the destination file or directory */
destpath = nsh_getfullpath(vtbl, argv[2]);
if (!destpath)
{
goto errout_with_rdfd;
}
/* Check if the destination is a directory */
ret = stat(destpath, &buf);
if (ret == 0)
{
/* Something exists here... is it a directory? */
if (S_ISDIR(buf.st_mode))
{
/* Yes, it is a directory. Remove any trailing '/' characters from the path */
trim_dir(argv[2]);
/* Construct the full path to the new file */
allocpath = nsh_getdirpath(argv[2], basename(argv[1]) );
if (!allocpath)
{
nsh_output(vtbl, g_fmtcmdoutofmemory, argv[0]);
goto errout_with_destpath;
}
/* Open then dest for writing */
nsh_freefullpath(destpath);
destpath = allocpath;
}
else if (!S_ISREG(buf.st_mode))
{
/* Maybe it is a driver? */
oflags = O_WRONLY;
}
}
/* Now open the destination */
wrfd = open(destpath, oflags, 0666);
if (wrfd < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "open", NSH_ERRNO);
goto errout_with_allocpath;
}
/* Now copy the file */
for (;;)
{
int nbytesread;
int nbyteswritten;
do
{
nbytesread = read(rdfd, g_iobuffer, IOBUFFERSIZE);
if (nbytesread == 0)
{
/* End of file */
ret = OK;
goto errout_with_wrfd;
}
else if (nbytesread < 0)
{
/* EINTR is not an error (but will still stop the copy) */
#ifndef CONFIG_DISABLE_SIGNALS
if (errno == EINTR)
{
nsh_output(vtbl, g_fmtsignalrecvd, argv[0]);
}
else
#endif
{
/* Read error */
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "read", NSH_ERRNO);
}
goto errout_with_wrfd;
}
}
while (nbytesread <= 0);
do
{
nbyteswritten = write(wrfd, g_iobuffer, nbytesread);
if (nbyteswritten >= 0)
{
nbytesread -= nbyteswritten;
}
else
{
/* EINTR is not an error (but will still stop the copy) */
#ifndef CONFIG_DISABLE_SIGNALS
if (errno == EINTR)
{
nsh_output(vtbl, g_fmtsignalrecvd, argv[0]);
}
else
#endif
{
/* Read error */
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "write", NSH_ERRNO);
}
goto errout_with_wrfd;
}
}
while (nbytesread > 0);
}
errout_with_wrfd:
close(wrfd);
errout_with_allocpath:
if (allocpath)
{
free(allocpath);
}
errout_with_destpath:
if (destpath && !allocpath)
{
nsh_freefullpath(destpath);
}
errout_with_rdfd:
close(rdfd);
errout_with_srcpath:
if (srcpath)
{
nsh_freefullpath(srcpath);
}
errout:
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_losetup
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT)
#ifndef CONFIG_NSH_DISABLE_LOSETUP
int cmd_losetup(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char *loopdev = NULL;
char *filepath = NULL;
bool teardown = false;
bool readonly = false;
off_t offset = 0;
bool badarg = false;
int ret = ERROR;
int option;
/* Get the losetup options: Two forms are supported:
*
* losetup -d <loop-device>
* losetup [-o <offset>] [-r] <loop-device> <filename>
*
* NOTE that the -o and -r options are accepted with the -d option, but
* will be ignored.
*/
while ((option = getopt(argc, argv, "d:o:r")) != ERROR)
{
switch (option)
{
case 'd':
loopdev = nsh_getfullpath(vtbl, optarg);
teardown = true;
break;
case 'o':
offset = atoi(optarg);
break;
case 'r':
readonly = true;
break;
case '?':
default:
nsh_output(vtbl, g_fmtarginvalid, argv[0]);
badarg = true;
break;
}
}
/* If a bad argument was encountered, then return without processing the command */
if (badarg)
{
goto errout_with_paths;
}
/* If this is not a tear down operation, then additional command line
* parameters are required.
*/
if (!teardown)
{
/* There must be two arguments on the command line after the options */
if (optind + 1 < argc)
{
loopdev = nsh_getfullpath(vtbl, argv[optind]);
optind++;
filepath = nsh_getfullpath(vtbl, argv[optind]);
optind++;
}
else
{
nsh_output(vtbl, g_fmtargrequired, argv[0]);
goto errout_with_paths;
}
}
/* There should be nothing else on the command line */
if (optind < argc)
{
nsh_output(vtbl, g_fmttoomanyargs, argv[0]);
goto errout_with_paths;
}
/* Perform the teardown operation */
if (teardown)
{
/* Tear down the loop device. */
ret = loteardown(loopdev);
if (ret < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "loteardown", NSH_ERRNO_OF(-ret));
goto errout_with_paths;
}
}
else
{
/* Set up the loop device */
ret = losetup(loopdev, filepath, 512, offset, readonly);
if (ret < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "losetup", NSH_ERRNO_OF(-ret));
goto errout_with_paths;
}
}
/* Free memory */
errout_with_paths:
if (loopdev)
{
free(loopdev);
}
if (filepath)
{
free(filepath);
}
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_ls
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0
#ifndef CONFIG_NSH_DISABLE_LS
int cmd_ls(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
const char *relpath;
unsigned int lsflags = 0;
char *fullpath;
bool badarg = false;
int ret;
/* Get the ls options */
int option;
while ((option = getopt(argc, argv, "lRs")) != ERROR)
{
switch (option)
{
case 'l':
lsflags |= (LSFLAGS_SIZE|LSFLAGS_LONG);
break;
case 'R':
lsflags |= LSFLAGS_RECURSIVE;
break;
case 's':
lsflags |= LSFLAGS_SIZE;
break;
case '?':
default:
nsh_output(vtbl, g_fmtarginvalid, argv[0]);
badarg = true;
break;
}
}
/* If a bad argument was encountered, then return without processing the command */
if (badarg)
{
return ERROR;
}
/* There may be one argument after the options */
if (optind + 1 < argc)
{
nsh_output(vtbl, g_fmttoomanyargs, argv[0]);
return ERROR;
}
else if (optind >= argc)
{
#ifndef CONFIG_DISABLE_ENVIRON
relpath = nsh_getcwd();
#else
nsh_output(vtbl, g_fmtargrequired, argv[0]);
return ERROR;
#endif
}
else
{
relpath = argv[optind];
}
/* Get the fullpath to the directory */
fullpath = nsh_getfullpath(vtbl, relpath);
if (!fullpath)
{
return ERROR;
}
/* List the directory contents */
nsh_output(vtbl, "%s:\n", fullpath);
ret = foreach_direntry(vtbl, "ls", fullpath, ls_handler, (void*)lsflags);
if (ret == OK && (lsflags & LSFLAGS_RECURSIVE) != 0)
{
/* Then recurse to list each directory within the directory */
ret = foreach_direntry(vtbl, "ls", fullpath, ls_recursive, (void*)lsflags);
}
nsh_freefullpath(fullpath);
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_mkdir
****************************************************************************/
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_FS_WRITABLE)
#ifndef CONFIG_NSH_DISABLE_MKDIR
int cmd_mkdir(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char *fullpath = nsh_getfullpath(vtbl, argv[1]);
int ret = ERROR;
if (fullpath)
{
ret = mkdir(fullpath, 0777);
if (ret < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "mkdir", NSH_ERRNO);
}
nsh_freefullpath(fullpath);
}
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_mkfatfs
****************************************************************************/
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_FS_FAT)
#ifndef CONFIG_NSH_DISABLE_MKFATFS
int cmd_mkfatfs(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
struct fat_format_s fmt = FAT_FORMAT_INITIALIZER;
char *fullpath = nsh_getfullpath(vtbl, argv[1]);
int ret = ERROR;
if (fullpath)
{
ret = mkfatfs(fullpath, &fmt);
if (ret < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "mkfatfs", NSH_ERRNO);
}
nsh_freefullpath(fullpath);
}
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_mkfifo
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0
#ifndef CONFIG_NSH_DISABLE_MKFIFO
int cmd_mkfifo(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char *fullpath = nsh_getfullpath(vtbl, argv[1]);
int ret = ERROR;
if (fullpath)
{
ret = mkfifo(fullpath, 0777);
if (ret < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "mkfifo", NSH_ERRNO);
}
nsh_freefullpath(fullpath);
}
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_mkrd
****************************************************************************/
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_FS_WRITABLE)
#ifndef CONFIG_NSH_DISABLE_MKRD
int cmd_mkrd(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
const char *fmt;
uint8_t *buffer;
uint32_t nsectors;
bool badarg = false;
int sectsize = 512;
int minor = 0;
int ret;
/* Get the mkrd options */
int option;
while ((option = getopt(argc, argv, ":m:s:")) != ERROR)
{
switch (option)
{
case 'm':
minor = atoi(optarg);
if (minor < 0 || minor > 255)
{
nsh_output(vtbl, g_fmtargrange, argv[0]);
badarg = true;
}
break;
case 's':
sectsize = atoi(optarg);
if (minor < 0 || minor > 16384)
{
nsh_output(vtbl, g_fmtargrange, argv[0]);
badarg = true;
}
break;
case ':':
nsh_output(vtbl, g_fmtargrequired, argv[0]);
badarg = true;
break;
case '?':
default:
nsh_output(vtbl, g_fmtarginvalid, argv[0]);
badarg = true;
break;
}
}
/* If a bad argument was encountered, then return without processing the command */
if (badarg)
{
return ERROR;
}
/* There should be exactly on parameter left on the command-line */
if (optind == argc-1)
{
nsectors = (uint32_t)atoi(argv[optind]);
}
else if (optind >= argc)
{
fmt = g_fmttoomanyargs;
goto errout_with_fmt;
}
else
{
fmt = g_fmtargrequired;
goto errout_with_fmt;
}
/* Allocate the memory backing up the ramdisk */
buffer = (uint8_t*)malloc(sectsize * nsectors);
if (!buffer)
{
fmt = g_fmtcmdoutofmemory;
goto errout_with_fmt;
}
#ifdef CONFIG_DEBUG_VERBOSE
memset(buffer, 0, sectsize * nsectors);
#endif
dbg("RAMDISK at %p\n", buffer);
/* Then register the ramdisk */
ret = ramdisk_register(minor, buffer, nsectors, sectsize, true);
if (ret < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "ramdisk_register", NSH_ERRNO_OF(-ret));
free(buffer);
return ERROR;
}
return ret;
errout_with_fmt:
nsh_output(vtbl, fmt, argv[0]);
return ERROR;
}
#endif
#endif
/****************************************************************************
* Name: cmd_mv
****************************************************************************/
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_FS_WRITABLE)
#ifndef CONFIG_NSH_DISABLE_MV
int cmd_mv(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char *oldpath;
char *newpath;
int ret;
/* Get the full path to the old and new file paths */
oldpath = nsh_getfullpath(vtbl, argv[1]);
if (!oldpath)
{
return ERROR;
}
newpath = nsh_getfullpath(vtbl, argv[2]);
if (!newpath)
{
nsh_freefullpath(newpath);
return ERROR;
}
/* Perform the mount */
ret = rename(oldpath, newpath);
if (ret < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "rename", NSH_ERRNO);
}
/* Free the file paths */
nsh_freefullpath(oldpath);
nsh_freefullpath(newpath);
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_rm
****************************************************************************/
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_FS_WRITABLE)
#ifndef CONFIG_NSH_DISABLE_RM
int cmd_rm(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char *fullpath = nsh_getfullpath(vtbl, argv[1]);
int ret = ERROR;
if (fullpath)
{
ret = unlink(fullpath);
if (ret < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "unlink", NSH_ERRNO);
}
nsh_freefullpath(fullpath);
}
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_rmdir
****************************************************************************/
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_FS_WRITABLE)
#ifndef CONFIG_NSH_DISABLE_RMDIR
int cmd_rmdir(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char *fullpath = nsh_getfullpath(vtbl, argv[1]);
int ret = ERROR;
if (fullpath)
{
ret = rmdir(fullpath);
if (ret < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "rmdir", NSH_ERRNO);
}
nsh_freefullpath(fullpath);
}
return ret;
}
#endif
#endif
/****************************************************************************
* Name: cmd_sh
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0 && CONFIG_NFILE_STREAMS > 0 && !defined(CONFIG_NSH_DISABLESCRIPT)
#ifndef CONFIG_NSH_DISABLE_SH
int cmd_sh(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
return nsh_script(vtbl, argv[0], argv[1]);
}
#endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0
#ifndef CONFIG_NSH_DISABLE_CMP
int cmd_cmp(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char *path1 = NULL;
char *path2 = NULL;
int fd1 = -1, fd2 = -1;
int ret = ERROR;
unsigned total_read = 0;
/* Get the full path to the two files */
path1 = nsh_getfullpath(vtbl, argv[1]);
if (!path1)
{
goto errout;
}
path2 = nsh_getfullpath(vtbl, argv[2]);
if (!path2)
{
goto errout;
}
/* Open the files for reading */
fd1 = open(path1, O_RDONLY);
if (fd1 < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "open", NSH_ERRNO);
goto errout;
}
fd2 = open(path2, O_RDONLY);
if (fd2 < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "open", NSH_ERRNO);
goto errout;
}
for (;;)
{
char buf1[128];
char buf2[128];
int nbytesread1 = read(fd1, buf1, sizeof(buf1));
int nbytesread2 = read(fd2, buf2, sizeof(buf2));
if (nbytesread1 < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "read", NSH_ERRNO);
goto errout;
}
if (nbytesread2 < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "read", NSH_ERRNO);
goto errout;
}
total_read += nbytesread1>nbytesread2?nbytesread2:nbytesread1;
if (nbytesread1 != nbytesread2 || memcmp(buf1, buf2, nbytesread1) != 0)
{
nsh_output(vtbl, "files differ: byte %u\n", total_read);
goto errout;
}
if (nbytesread1 < sizeof(buf1)) break;
}
ret = OK;
errout:
if (fd1 != -1) close(fd1);
if (fd2 != -1) close(fd2);
return ret;
}
#endif
#endif