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UTRACE(2) System Calls Manual UTRACE(2) NAME utrace -- insert user record in ktrace log LIBRARY Standard C Library (libc, -lc) SYNOPSIS #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), truss(1), ktrace(2), sysdecode_utrace(3) HISTORY The utrace() system call first appeared in FreeBSD 2.2. FreeBSD 13.2 December 11, 2015 UTRACE(2)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | HISTORY
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