NAME¶
explain_munmap_or_die - unmap a file or device from memory and report errors
SYNOPSIS¶
#include <libexplain/munmap.h>
void explain_munmap_or_die(void *data, size_t data_size);
int explain_munmap_on_error(void *data, size_t data_size);
DESCRIPTION¶
The
explain_munmap_or_die function is used to call the
munmap(2)
system call. On failure an explanation will be printed to
stderr,
obtained from the
explain_munmap(3) function, and then the process
terminates by calling exit(EXIT_FAILURE).
The
explain_munmap_on_error function is used to call the
munmap(2)
system call. On failure an explanation will be printed to
stderr,
obtained from the
explain_munmap(3) function, but still returns to the
caller.
- data
- The data, exactly as to be passed to the munmap(2)
system call.
- data_size
- The data_size, exactly as to be passed to the
munmap(2) system call.
RETURN VALUE¶
The
explain_munmap_or_die function only returns on success, see
munmap(2) for more information. On failure, prints an explanation and
exits, it does not return.
The
explain_munmap_on_error function always returns the value return by
the wrapped
munmap(2) system call.
EXAMPLE¶
The
explain_munmap_or_die function is intended to be used in a fashion
similar to the following example:
explain_munmap_or_die(data, data_size);
SEE ALSO¶
- munmap(2)
- unmap a file or device from memory
- explain_munmap(3)
- explain munmap(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT¶
libexplain version 0.52
Copyright (C) 2010 Peter Miller