explain_getgrent_or_die(3) Library Functions Manual explain_getgrent_or_die(3) NAME explain_getgrent_or_die - get group file entry and report errors SYNOPSIS #include <libexplain/getgrent.h> struct group *explain_getgrent_or_die(void); struct group *explain_getgrent_on_error(void); DESCRIPTION The explain_getgrent_or_die function is used to call the getgrent(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_getgrent(3) function, and then the process terminates by call- ing exit(EXIT_FAILURE). The explain_getgrent_on_error function is used to call the getgrent(3) sys- tem call. On failure an explanation will be printed to stderr, obtained from the explain_getgrent(3) function, but still returns to the caller. RETURN VALUE The explain_getgrent_or_die function only returns on success, see get- grent(3) for more information. On failure, prints an explanation and exits, it does not return. The explain_getgrent_on_error function always returns the value return by the wrapped getgrent(3) system call. EXAMPLE The explain_getgrent_or_die function is intended to be used in a fashion similar to the following example: struct group *result = explain_getgrent_or_die(); SEE ALSO getgrent(3) get group file entry explain_getgrent(3) explain getgrent(3) errors exit(2) terminate the calling process COPYRIGHT libexplain version 1.3 Copyright (C) 2013 Peter Miller explain_getgrent_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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