explain_getresgid_or_die(3) Library Functions Manual explain_getresgid_or_die(3) NAME explain_getresgid_or_die - get r/e/s group IDs and report errors SYNOPSIS #include <libexplain/getresgid.h> void explain_getresgid_or_die(gid_t *rgid, gid_t *egid, gid_t *sgid); int explain_getresgid_on_error(gid_t *rgid, gid_t *egid, gid_t *sgid); DESCRIPTION The explain_getresgid_or_die function is used to call the getresgid(2) sys- tem call. On failure an explanation will be printed to stderr, obtained from the explain_getresgid(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_getresgid_on_error function is used to call the getresgid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_getresgid(3) function, but still returns to the caller. rgid The rgid, exactly as to be passed to the getresgid(2) system call. egid The egid, exactly as to be passed to the getresgid(2) system call. sgid The sgid, exactly as to be passed to the getresgid(2) system call. RETURN VALUE The explain_getresgid_or_die function only returns on success, see getres- gid(2) for more information. On failure, prints an explanation and exits, it does not return. The explain_getresgid_on_error function always returns the value return by the wrapped getresgid(2) system call. EXAMPLE The explain_getresgid_or_die function is intended to be used in a fashion similar to the following example: explain_getresgid_or_die(rgid, egid, sgid); SEE ALSO getresgid(2) get real, effective and saved group IDs explain_getresgid(3) explain getresgid(2) errors exit(2) terminate the calling process COPYRIGHT libexplain version 1.3 Copyright (C) 2012 Peter Miller explain_getresgid_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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