rtl_printf

Name

rtl_printf -- print formatted output

Synopsis

       #include <rtl_printf.h>

       int rtl_printf(const char *format, ...);

DESCRIPTION

This function is a non-portable RTLinux extension.

The rtl_printf function converts and formats its arguments similarly to printf(3) and places output to the kernel message buffer. Unlike the Linux kernel printk output facility, rtl_printf is safe to use from RTLinux threads and interrupt handlers.

RETURN VALUE

This function returns the number of bytes output on success, and a negative value on error.

ERRORS

No errors are defined.

NOTES

Generally, if at the Linux console, the kernel messages that rtl_printf produces are visible on the screen. You can also use the dmesg(1) command to view the kernel messages buffer. This is particularly useful when working in X. In addition, the syslogd(8) daemon is often configured to place the kernel messages to /var/log/messages.

AUTHOR

Michael Barabanov (baraban@fsmlabs.com)

SEE ALSO

printf(3), fprintf(3)

2001 FSMLabs Inc.

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