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Annotation of cci/usr/src/man/man2/kill.2, revision 1.1

1.1     ! root        1: .TH KILL 2 "27 July 1983"
        !             2: .UC 4
        !             3: .SH NAME
        !             4: kill \- send signal to a process
        !             5: .SH SYNOPSIS
        !             6: .ft B
        !             7: kill(pid, sig)
        !             8: .br
        !             9: int pid, sig;
        !            10: .SH DESCRIPTION
        !            11: .I Kill
        !            12: sends the signal \fIsig\fP
        !            13: to a process, specified by the process number
        !            14: .IR pid .
        !            15: .I Sig
        !            16: may be one of the signals specified in
        !            17: .IR sigvec (2),
        !            18: or it may be 0, in which case
        !            19: error checking is performed but no
        !            20: signal is actually sent. 
        !            21: This can be used to check the validity of
        !            22: .IR pid .
        !            23: .PP
        !            24: The sending and receiving processes must
        !            25: have the same effective user ID, otherwise
        !            26: this call is restricted to the super-user.
        !            27: A single exception is the signal SIGCONT which may always be sent
        !            28: to any child or grandchild of the current process.
        !            29: .PP
        !            30: If the process number is 0,
        !            31: the signal is sent to all other processes in the
        !            32: sender's process group; this is a variant of
        !            33: .IR killpg (2).
        !            34: .PP
        !            35: If the process number is \-1, and the user is the super-user,
        !            36: the signal is broadcast universally
        !            37: except to system processes
        !            38: and the process sending the signal.
        !            39: .PP
        !            40: Processes may send signals to themselves.
        !            41: .SH "RETURN VALUE
        !            42: Upon successful completion, a value of 0 is returned.
        !            43: Otherwise, a value of \-1 is returned and
        !            44: .I errno
        !            45: is set to indicate the error.
        !            46: .SH "ERRORS
        !            47: .I Kill
        !            48: will fail and no signal will be sent if any of the following
        !            49: occur:
        !            50: .TP 15
        !            51: [EINVAL]
        !            52: \fISig\fP is not a valid signal number.
        !            53: .TP 15
        !            54: [ESRCH]
        !            55: No process can be found corresponding to that specified by \fIpid\fP.
        !            56: .TP 15
        !            57: [EPERM]
        !            58: The sending process is not the super-user and its effective
        !            59: user id does not match the effective user-id of the receiving process.
        !            60: .SH "SEE ALSO"
        !            61: getpid(2), getpgrp(2), killpg(2), sigvec(2)

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