BSD 4_3_Tahoe development

[unix-history] / usr / man / cat2 / sigsetmask.0

SIGSETMASK(2)       UNIX Programmer's Manual        SIGSETMASK(2)



N\bNA\bAM\bME\bE
    sigsetmask - set current signal mask

S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
    #\b#i\bin\bnc\bcl\blu\bud\bde\be <\b<s\bsi\big\bgn\bna\bal\bl.\b.h\bh>\b>

    s\bsi\big\bgs\bse\bet\btm\bma\bas\bsk\bk(\b(m\bma\bas\bsk\bk)\b);\b;
    i\bin\bnt\bt m\bma\bas\bsk\bk;\b;

    m\bma\bas\bsk\bk =\b= s\bsi\big\bgm\bma\bas\bsk\bk(\b(s\bsi\big\bgn\bnu\bum\bm)\b)

D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
    _\bS_\bi_\bg_\bs_\be_\bt_\bm_\ba_\bs_\bk sets the current signal mask (those signals that
    are blocked from delivery).  Signals are blocked if the
    corresponding bit in _\bm_\ba_\bs_\bk is a 1; the macro _\bs_\bi_\bg_\bm_\ba_\bs_\bk is pro-
    vided to construct the mask for a given _\bs_\bi_\bg_\bn_\bu_\bm.

    The system quietly disallows SIGKILL, SIGSTOP, or SIGCONT to
    be blocked.

R\bRE\bET\bTU\bUR\bRN\bN V\bVA\bAL\bLU\bUE\bE
    The previous set of masked signals is returned.

S\bSE\bEE\bE A\bAL\bLS\bSO\bO
    kill(2), sigvec(2), sigblock(2), sigpause(2)






























Printed 7/9/88            May 14, 1986                          1