SIMPLE SOLUTIONS

EXPLAIN_GETGROUPS_OR_DIE - reference manual online

Get supplementary group IDs and report errors.

Chapter
explain_getgroups_or_die(3)          Library Functions Manual         explain_getgroups_or_die(3)

NAME explain_getgroups_or_die - get supplementary group IDs and report errors
SYNOPSIS #include <libexplain/getgroups.h> void explain_getgroups_or_die(int data_size, gid_t *data); int explain_getgroups_on_error(int data_size, gid_t *data);
DESCRIPTION The explain_getgroups_or_die function is used to call the getgroups(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_getgroups(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_getgroups_on_error function is used to call the getgroups(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_getgroups(3) function, but still returns to the caller. data_size The data_size, exactly as to be passed to the getgroups(2) system call. data The data, exactly as to be passed to the getgroups(2) system call.
RETURN VALUE The explain_getgroups_or_die function only returns on success, see getgroups(2) for more information. On failure, prints an explanation and exits, it does not return. The explain_getgroups_on_error function always returns the value return by the wrapped getgroups(2) system call.
EXAMPLE The explain_getgroups_or_die function is intended to be used in a fashion similar to the following example: explain_getgroups_or_die(data_size, data);
SEE ALSO getgroups(2) get/set list of supplementary group IDs explain_getgroups(3) explain getgroups(2) errors exit(2) terminate the calling process
explain_getgroups_or_die(3)
This manual Reference Other manuals
explain_getgroups_or_die(3) referred by explain(3) | explain_getgroups(3)
refer to _exit(2) | explain_getgroups(3) | getgroups(2)