NAME¶
explain_fstatfs_or_die - get file system statistics and report errors
SYNOPSIS¶
#include <libexplain/fstatfs.h>
void explain_fstatfs_or_die(int fildes, struct statfs *data);
int explain_fstatfs_on_error(int fildes, struct statfs *data);
DESCRIPTION¶
The
explain_fstatfs_or_die function is used to call the
fstatfs(2)
system call. On failure an explanation will be printed to
stderr,
obtained from the
explain_fstatfs(3) function, and then the process
terminates by calling exit(EXIT_FAILURE).
The
explain_fstatfs_on_error function is used to call the
fstatfs(2) system call. On failure an explanation will be printed to
stderr, obtained from the
explain_fstatfs(3) function, but still
returns to the caller.
- fildes
- The fildes, exactly as to be passed to the
fstatfs(2) system call.
- data
- The data, exactly as to be passed to the fstatfs(2)
system call.
RETURN VALUE¶
The
explain_fstatfs_or_die function only returns on success, see
fstatfs(2) for more information. On failure, prints an explanation and
exits, it does not return.
The
explain_fstatfs_on_error function always returns the value return by
the wrapped
fstatfs(2) system call.
EXAMPLE¶
The
explain_fstatfs_or_die function is intended to be used in a fashion
similar to the following example:
explain_fstatfs_or_die(fildes, data);
SEE ALSO¶
- fstatfs(2)
- get file system statistics
- explain_fstatfs(3)
- explain fstatfs(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT¶
libexplain version 0.52
Copyright (C) 2009 Peter Miller
