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| explain_setgrent_or_die(3) | FreeBSD Library Functions Manual | explain_setgrent_or_die(3) |
NAME
explain_setgrent_or_die - rewind group database and report errorsSYNOPSIS
#include <libexplain/setgrent.h>void explain_setgrent_or_die(void);
void explain_setgrent_on_error(void);
DESCRIPTION
The explain_setgrent_or_die function is used to call the setgrent(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_setgrent(3) function, and then the process terminates by calling exit(EXIT_FAILURE).The explain_setgrent_on_error function is used to call the setgrent(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_setgrent(3) function, but still returns to the caller.
RETURN VALUE
The explain_setgrent_or_die function only returns on success, see setgrent(3) for more information. On failure, prints an explanation and exits, it does not return.The explain_setgrent_on_error function always returns the value return by the wrapped setgrent(3) system call.
EXAMPLE
The explain_setgrent_or_die function is intended to be used in a fashion similar to the following example:explain_setgrent_or_die();
SEE ALSO
- setgrent(3)
- rewind to the start of the group database
- explain_setgrent(3)
- explain setgrent(3) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2013 Peter Miller
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