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Add losetup to NSH

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1243 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2008-11-15 17:42:49 +00:00
parent d6aa80bbd0
commit c8f205d2c5
7 changed files with 239 additions and 54 deletions
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examples/nsh/README.txt
+23 -9
View File
@@ -328,6 +328,19 @@ o ifconfig
if uIP statistics are enabled (CONFIG_NET_STATISTICS), then
this command will also show the detailed state of uIP.
o losetup [-d <dev-path>] | [[-o <offset>] [-r] <ldev-path> <file-path>]
Setup or teardown the loop device:
1. Teardown the setup for the loop device at <dev-path>:
losetup d <dev-path>
2. Setup the loop device at <dev-path> to access the file at <file-path>
as a block device:
losetup [-o <offset>] [-r] <dev-path> <file-path>
o ls [-lRs] <dir-path>
Show the contents of the directory at <dir-path>. NOTE:
@@ -721,6 +734,7 @@ Command Dependencies on Configuration Settings
get CONFIG_NET && CONFIG_NET_UDP && CONFIG_NFILE_DESCRIPTORS > 0 && CONFIG_NET_BUFSIZE >= 558 (see note 1)
help --
ifconfig CONFIG_NET
losetup !CONFIG_DISABLE_MOUNTPOINT && CONFIG_NFILE_DESCRIPTORS > 0
ls CONFIG_NFILE_DESCRIPTORS > 0
mb,mh,mw ---
mem ---
@@ -762,15 +776,15 @@ also allow it to squeeze into very small memory footprints.
CONFIG_EXAMPLES_NSH_DISABLE_CAT, CONFIG_EXAMPLES_NSH_DISABLE_CD, CONFIG_EXAMPLES_NSH_DISABLE_CP,
CONFIG_EXAMPLES_NSH_DISABLE_DD, CONFIG_EXAMPLES_NSH_DISABLE_ECHO, CONFIG_EXAMPLES_NSH_DISABLE_EXEC,
CONFIG_EXAMPLES_NSH_DISABLE_EXIT, CONFIG_EXAMPLES_NSH_DISABLE_GET, CONFIG_EXAMPLES_NSH_DISABLE_HELP,
CONFIG_EXAMPLES_NSH_DISABLE_IFCONFIG, CONFIG_EXAMPLES_NSH_DISABLE_LS, CONFIG_EXAMPLES_NSH_DISABLE_MB,
CONFIG_EXAMPLES_NSH_DISABLE_MEM, CONFIG_EXAMPLES_NSH_DISABLE_MKDIR, CONFIG_EXAMPLES_NSH_DISABLE_MKFATFS,
CONFIG_EXAMPLES_NSH_DISABLE_MKFIFO, CONFIG_EXAMPLES_NSH_DISABLE_MKRD, CONFIG_EXAMPLES_NSH_DISABLE_MH,
CONFIG_EXAMPLES_NSH_DISABLE_MOUNT, CONFIG_EXAMPLES_NSH_DISABLE_MW, CONFIG_EXAMPLES_NSH_DISABLE_PS,
CONFIG_EXAMPLES_NSH_DISABLE_PING, CONFIG_EXAMPLES_NSH_DISABLE_PUT, CONFIG_EXAMPLES_NSH_DISABLE_PWD,
CONFIG_EXAMPLES_NSH_DISABLE_RM, CONFIG_EXAMPLES_NSH_DISABLE_RMDIR, CONFIG_EXAMPLES_NSH_DISABLE_SET,
CONFIG_EXAMPLES_NSH_DISABLE_SH, CONFIG_EXAMPLES_NSH_DISABLE_SLEEP, CONFIG_EXAMPLES_NSH_DISABLE_TEST,
CONFIG_EXAMPLES_NSH_DISABLE_UMOUNT, CONFIG_EXAMPLES_NSH_DISABLE_UNSET, CONFIG_EXAMPLES_NSH_DISABLE_USLEEP,
CONFIG_EXAMPLES_NSH_DISABLE_XD
CONFIG_EXAMPLES_NSH_DISABLE_IFCONFIG, CONFIG_EXAMPLES_NSH_DISABLE_LOSETUP, CONFIG_EXAMPLES_NSH_DISABLE_LS,
CONFIG_EXAMPLES_NSH_DISABLE_MB, CONFIG_EXAMPLES_NSH_DISABLE_MEM, CONFIG_EXAMPLES_NSH_DISABLE_MKDIR,
CONFIG_EXAMPLES_NSH_DISABLE_MKFATFS, CONFIG_EXAMPLES_NSH_DISABLE_MKFIFO, CONFIG_EXAMPLES_NSH_DISABLE_MKRD,
CONFIG_EXAMPLES_NSH_DISABLE_MH, CONFIG_EXAMPLES_NSH_DISABLE_MOUNT, CONFIG_EXAMPLES_NSH_DISABLE_MW,
CONFIG_EXAMPLES_NSH_DISABLE_PS, CONFIG_EXAMPLES_NSH_DISABLE_PING, CONFIG_EXAMPLES_NSH_DISABLE_PUT,
CONFIG_EXAMPLES_NSH_DISABLE_PWD, CONFIG_EXAMPLES_NSH_DISABLE_RM, CONFIG_EXAMPLES_NSH_DISABLE_RMDIR,
CONFIG_EXAMPLES_NSH_DISABLE_SET, CONFIG_EXAMPLES_NSH_DISABLE_SH, CONFIG_EXAMPLES_NSH_DISABLE_SLEEP,
CONFIG_EXAMPLES_NSH_DISABLE_TEST, CONFIG_EXAMPLES_NSH_DISABLE_UMOUNT, CONFIG_EXAMPLES_NSH_DISABLE_UNSET,
CONFIG_EXAMPLES_NSH_DISABLE_USLEEP, CONFIG_EXAMPLES_NSH_DISABLE_XD
NSH-Specific Configuration Settings
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
examples/nsh/nsh.h
+3
View File
@@ -378,6 +378,9 @@ extern int cmd_lbracket(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
# endif
# endif /* CONFIG_NFILE_STREAMS && !CONFIG_EXAMPLES_NSH_DISABLESCRIPT */
# ifndef CONFIG_DISABLE_MOUNTPOINT
# ifndef CONFIG_EXAMPLES_NSH_DISABLE_LOSETUP
extern int cmd_losetup(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
# endif
# ifndef CONFIG_EXAMPLES_NSH_DISABLE_MKFIFO
extern int cmd_mkfifo(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
# endif
examples/nsh/nsh_fscmds.c
+122
View File
@@ -647,6 +647,128 @@ errout:
#endif
#endif
/****************************************************************************
* Name: cmd_losetup
****************************************************************************/
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT)
#ifndef CONFIG_EXAMPLES_NSH_DISABLE_LOSETUP
int cmd_losetup(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char *loopdev = NULL;
char *filepath = NULL;
boolean teardown = FALSE;
boolean readonly = FALSE;
off_t offset = 0;
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]);
return ERROR;
}
}
/* 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
****************************************************************************/
examples/nsh/nsh_main.c
+6
View File
@@ -188,6 +188,12 @@ static const struct cmdmap_s g_cmdmap[] =
# endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT)
# ifndef CONFIG_EXAMPLES_NSH_DISABLE_LOSETUP
{ "losetup", cmd_losetup, 3, 6, "[-d <dev-path>] | [[-o <offset>] [-r] <dev-path> <file-path>]" },
# endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0
# ifndef CONFIG_EXAMPLES_NSH_DISABLE_LS
{ "ls", cmd_ls, 1, 5, "[-lRs] <dir-path>" },