GETBOOTFILE(3)         FreeBSD Library Functions Manual         GETBOOTFILE(3)

NAME
     getbootfile - get kernel boot file name

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <paths.h>

     const char *
     getbootfile(void);

DESCRIPTION
     The getbootfile() function retrieves the full pathname of the file from
     which the current kernel was loaded, and returns a static pointer to the
     name.  A read/write interface to this information is available via the
     sysctl(3) MIB variable "kern.bootfile".

RETURN VALUES
     If the call succeeds a string giving the pathname is returned.  If it
     fails, a null pointer is returned and an error code is placed in the
     global location errno.

SEE ALSO
     sysctl(3)

HISTORY
     The getbootfile() function appeared in FreeBSD 2.0.

BUGS
     If the boot blocks have not been modified to pass this information into
     the kernel at boot time, the static string "/boot/kernel/kernel" is
     returned instead of the real boot file.

FreeBSD 13.1-RELEASE-p6       September 23, 1994       FreeBSD 13.1-RELEASE-p6