NAME    [Toc]    [Back]

     utrace -- insert user record in ktrace log

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <sys/types.h>
     #include <sys/param.h>
     #include <sys/time.h>
     #include <sys/uio.h>
     #include <sys/ktrace.h>

     int
     utrace(const void *addr, size_t len);

DESCRIPTION    [Toc]    [Back]

     Adds a record to the process trace with information supplied by user.
     The record contains len bytes from memory pointed to by addr.  This call
     only has an effect if the calling process is being traced.

RETURN VALUES    [Toc]    [Back]

     Upon successful completion, a value of 0 is returned.  Otherwise, a value
     of -1 is returned and errno is set to indicate the error.

ERRORS    [Toc]    [Back]

     [EINVAL]		Specified data length len was bigger than
			KTR_USER_MAXLEN.

     [ENOMEM]		Insufficient memory to honor the request.

     [ENOSYS]		Currently running kernel was compiled without
			ktrace(2) support (option KTRACE).

SEE ALSO    [Toc]    [Back]

     kdump(1), ktrace(1), ktrace(2)

HISTORY    [Toc]    [Back]

     The utrace() system call first appeared in FreeBSD 2.2.


FreeBSD 5.2.1		       December 28, 2000		 FreeBSD 5.2.1