SIMPLE SOLUTIONS

EXPLAIN_GETGROUPLIST_OR_DIE - reference manual online

Get list of groups and report errors.

Chapter
explain_getgrouplist_or_die(3)       Library Functions Manual      explain_getgrouplist_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 getgrouplist(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_getgrou‐ plist(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_getgrouplist_on_error function is used to call the getgrouplist(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_get‐ grouplist(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) system call. groups The groups, exactly as to be passed to the getgrouplist(3) system 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 return 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
explain_getgrouplist_or_die(3)
This manual Reference Other manuals
explain_getgrouplist_or_die(3) referred by explain(3) | explain_getgrouplist(3)
refer to _exit(2) | explain_getgrouplist(3) | getgrouplist(3)