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Add dmesg command that can be used to dump the syslog

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4382 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-02-11 15:27:44 +00:00
parent 96abf2590b
commit 3ef447cf6e
5 changed files with 150 additions and 104 deletions
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2
ChangeLog.txt
View File

@ -184,4 +184,6 @@
checkin).
* apps/examples/ftpd: Add a test for the FTPD server (untest on initial
check-in).
* apps/nshlib/nsh_fscmds.c: Add support for a 'dmesg' command that will
dump the system log if CONFIG_SYSLOG is selected.

28
nshlib/nsh.h
View File

@ -218,6 +218,25 @@
# define nsh_freefullpath(p)
#endif
/* The size of the I/O buffer may be specified in the
* configs/<board-name>defconfig file -- provided that it is at least as
* large as PATH_MAX.
*/
#if CONFIG_NFILE_DESCRIPTORS > 0
# ifdef CONFIG_NSH_FILEIOSIZE
# if CONFIG_NSH_FILEIOSIZE > (PATH_MAX + 1)
# define IOBUFFERSIZE CONFIG_NSH_FILEIOSIZE
# else
# define IOBUFFERSIZE (PATH_MAX + 1)
# endif
# else
# define IOBUFFERSIZE 1024
# endif
# else
# define IOBUFFERSIZE (PATH_MAX + 1)
#endif
/****************************************************************************
* Public Types
****************************************************************************/
@ -396,10 +415,13 @@ void nsh_dumpbuffer(FAR struct nsh_vtbl_s *vtbl, const char *msg,
# ifndef CONFIG_NSH_DISABLE_LS
int cmd_ls(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
# endif
# if CONFIG_NFILE_STREAMS > 0 && !defined(CONFIG_NSH_DISABLESCRIPT)
# ifndef CONFIG_NSH_DISABLE_SH
# if defined(CONFIG_SYSLOG) && !defined(CONFIG_NSH_DISABLE_DMESG)
int cmd_dmesg(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
# endif
# if 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);
# endif
# endif
# endif /* CONFIG_NFILE_STREAMS && !CONFIG_NSH_DISABLESCRIPT */
# ifndef CONFIG_DISABLE_MOUNTPOINT
# ifndef CONFIG_NSH_DISABLE_LOSETUP

1
nshlib/nsh_dbgcmds.c
View File

@ -353,4 +353,3 @@ int cmd_xd(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
return OK;
}
#endif

220
nshlib/nsh_fscmds.c
View File

@ -78,25 +78,6 @@
#define LSFLAGS_LONG 2
#define LSFLAGS_RECURSIVE 4
/* The size of the I/O buffer may be specified in the
* configs/<board-name>defconfig file -- provided that it is at least as
* large as PATH_MAX.
*/
#if CONFIG_NFILE_DESCRIPTORS > 0
# ifdef CONFIG_NSH_FILEIOSIZE
# if CONFIG_NSH_FILEIOSIZE > (PATH_MAX + 1)
# define IOBUFFERSIZE CONFIG_NSH_FILEIOSIZE
# else
# define IOBUFFERSIZE (PATH_MAX + 1)
# endif
# else
# define IOBUFFERSIZE 1024
# endif
# else
# define IOBUFFERSIZE (PATH_MAX + 1)
#endif
/****************************************************************************
* Private Types
****************************************************************************/
@ -387,6 +368,107 @@ static int ls_recursive(FAR struct nsh_vtbl_s *vtbl, const char *dirpath,
}
#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
****************************************************************************/
@ -399,9 +481,7 @@ static int ls_recursive(FAR struct nsh_vtbl_s *vtbl, const char *dirpath,
#ifndef CONFIG_NSH_DISABLE_CAT
int cmd_cat(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
char buffer[IOBUFFERSIZE];
char *fullpath;
int fd;
int i;
int ret = OK;
@ -412,98 +492,38 @@ int cmd_cat(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
/* Get the fullpath to the file */
fullpath = nsh_getfullpath(vtbl, argv[i]);
if (fullpath)
if (!fullpath)
{
/* Open the file for reading */
ret = ERROR;
}
else
{
/* Dump the file to the console */
fd = open(fullpath, O_RDONLY);
if (fd < 0)
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "open", NSH_ERRNO);
}
else
{
/* And just dump it byte for byte into stdout */
for (;;)
{
int nbytesread = read(fd, buffer, IOBUFFERSIZE);
/* Check for read errors */
if (nbytesread < 0)
{
/* EINTR is not an error (but will stop stop the cat) */
#ifndef CONFIG_DISABLE_SIGNALS
if (errno == EINTR)
{
nsh_output(vtbl, g_fmtsignalrecvd, argv[0]);
}
else
#endif
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "read", NSH_ERRNO);
}
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)
{
/* EINTR is not an error (but will stop stop the cat) */
#ifndef CONFIG_DISABLE_SIGNALS
if (errno == EINTR)
{
nsh_output(vtbl, g_fmtsignalrecvd, argv[0]);
}
else
#endif
{
nsh_output(vtbl, g_fmtcmdfailed, argv[0], "write", NSH_ERRNO);
}
ret = ERROR;
break;
}
else
{
nbyteswritten += n;
}
}
}
/* Otherwise, it is the end of file */
else
{
break;
}
}
(void)close(fd);
}
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_NSH_DISABLE_DMESG)
int cmd_dmesg(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
return cat_common(vtbl, argv[0], "/dev/syslog");
}
#endif
/****************************************************************************
* Name: cmd_cp
****************************************************************************/

3
nshlib/nsh_parse.c
View File

@ -167,6 +167,9 @@ static const struct cmdmap_s g_cmdmap[] =
# ifndef CONFIG_NSH_DISABLE_DD
{ "dd", cmd_dd, 3, 6, "if=<infile> of=<outfile> [bs=<sectsize>] [count=<sectors>] [skip=<sectors>]" },
# endif
# if defined(CONFIG_SYSLOG) && !defined(CONFIG_NSH_DISABLE_DMESG)
{ "dmesg", cmd_dmesg, 1, 1, NULL },
# endif
#endif
#ifndef CONFIG_NSH_DISABLE_ECHO