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explain_g...ist_or_die(3) Library Functions Manual explain_g...ist_or_die(3) NAME explain_getgrouplist_or_die - get list of groups and report errors SYNOPSIS #include <libexplain/getgrouplist.h> void explain_getgrouplist_or_die(const char *user, gid_t group, gid_t *groups, int *ngroups); int explain_getgrouplist_on_error(const char *user, gid_t group, gid_t *groups, int *ngroups); DESCRIPTION The explain_getgrouplist_or_die function is used to call the getgrou- plist(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_getgrouplist(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_getgrouplist_on_error function is used to call the getgrou- plist(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_getgrouplist(3) function, but still returns to the caller. user The user, exactly as to be passed to the getgrouplist(3) system call. group The group, exactly as to be passed to the getgrouplist(3) sys- tem call. groups The groups, exactly as to be passed to the getgrouplist(3) sys- tem call. ngroups The ngroups, exactly as to be passed to the getgrouplist(3) system call. RETURN VALUE The explain_getgrouplist_or_die function only returns on success, see getgrouplist(3) for more information. On failure, prints an explanation and exits, it does not return. The explain_getgrouplist_on_error function always returns the value re- turn by the wrapped getgrouplist(3) system call. EXAMPLE The explain_getgrouplist_or_die function is intended to be used in a fashion similar to the following example: explain_getgrouplist_or_die(user, group, groups, ngroups); SEE ALSO getgrouplist(3) get list of groups to which a user belongs explain_getgrouplist(3) explain getgrouplist(3) errors exit(2) terminate the calling process COPYRIGHT libexplain version 1.3 Copyright (C) 2013 Peter Miller explain_g...ist_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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