How to redirect console output into a file in VxWorks shell? - vxworks

Question

In Windows or Linux, it's very often we redirect console output to a file as below:
Windows:
dir > text
Linux:
ls -l > text
I wonder how to do the similar thing in VxWorks shell.

Answer 1

You can try something like this:
-> saveFd = open("myfile.txt",0x102, 0777 )
-> oldFd = ioGlobalStdGet(1)
-> ioGlobalStdSet(1, saveFd)
-> runmytest()
...
-> ioGlobalStdSet(1, oldFd)
This will redirect all code to the file that you have opened, this case myfile.txt

Answer 2

I changed "0x102" in "saveFd = open("myfile.txt",0x102, 0777 )" into "0x202", then it works. All console display was redirected into "myfile.txt".
In previous post, I got a mistake. I thought it hung after "ioGlobalStdSet(1, saveFd)". It's not hung, but redirecting all display into "myfile.txt" and I used "CTL-C" to stop the redirection.

Answer 3

The following code snippets show how to save all serial console output to a file.
Try -> tyco0_write_to_file 4096
#include <tyLib.h>
#include <private/iosLibP.h>
int tyco0_log_max_size = -1;
int tyco0_log_fd = -1;
int tyco0_write_hook(TY_DEV_ID pTyDev, char *buffer, int nbytes)
{
FD_ENTRY *p_fd_entry;
static int bytes_written = 0;
if ('0' == pTyDev->devHdr.name[6]) { /* /tyCo/0 */
if ((bytes_written+nbytes)<tyco0_log_max_size) {
(void)write(tyco0_log_fd,buffer,nbytes);
bytes_written += nbytes;
}
else {
(void)write(tyco0_log_fd,buffer,tyco0_log_max_size-bytes_written);
p_fd_entry = iosFdMap(1);
p_fd_entry->pDrvEntry->de_write = tyWrite;
close(tyco0_log_fd);
bytes_written = 0;
}
}
return tyWrite(pTyDev,buffer,nbytes);
}
int tyco0_write_to_file(int file_max_size)
{
FD_ENTRY *p_fd_entry;
p_fd_entry = iosFdMap(1); /* /tyCo/0 */
if (NULL==p_fd_entry) {
perror("iosFdMap");
return -1;
}
tyco0_log_fd = open("/ram/tyco0.log",O_CREAT|O_RDWR,0);
if (tyco0_log_fd == -1) {
perror("open");
return -1;
}
if (file_max_size <= 0) {
file_max_size = 1024;
}
tyco0_log_max_size = file_max_size;
if (p_fd_entry->pDrvEntry->de_write == tyWrite) {
p_fd_entry->pDrvEntry->de_write = tyco0_write_hook;
}
else {
printf("tyWrite not found\n");
close(tyco0_log_fd);
return -1;
}
return 0;
}