utrace(2) [debian man page]

UTRACE(2)						      BSD System Calls Manual							 UTRACE(2)

NAME

     utrace -- insert user record in ktrace log

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #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

     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

     Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the
     error.

ERRORS

     [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 (options KTRACE).

SEE ALSO

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

HISTORY

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

BSD
								 December 28, 2000							       BSD

UTRACE(2)						      BSD System Calls Manual							 UTRACE(2)

NAME

     utrace -- insert user record in ktrace log

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

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

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

DESCRIPTION

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

RETURN VALUES

     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

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

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

SEE ALSO

     kdump(1), ktrace(1), ktruss(1), fktrace(2), ktrace(2), options(4)

HISTORY

     The utrace() system call first appeared in FreeBSD 2.2.  It was added to NetBSD in NetBSD 1.6.  The label argument is a NetBSD extension.

BSD
								 December 28, 2000							       BSD