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