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Diffstat (limited to 'man3/siginterrupt.3')
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diff --git a/man3/siginterrupt.3 b/man3/siginterrupt.3 new file mode 100644 index 000000000..aa5b20e33 --- /dev/null +++ b/man3/siginterrupt.3 @@ -0,0 +1,63 @@ +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" Permission is granted to make and distribute verbatim copies of this +.\" manual provided the copyright notice and this permission notice are +.\" preserved on all copies. +.\" +.\" Permission is granted to copy and distribute modified versions of this +.\" manual under the conditions for verbatim copying, provided that the +.\" entire resulting derived work is distributed under the terms of a +.\" permission notice identical to this one. +.\" +.\" Since the Linux kernel and libraries are constantly changing, this +.\" manual page may be incorrect or out-of-date. The author(s) assume no +.\" responsibility for errors or omissions, or for damages resulting from +.\" the use of the information contained herein. The author(s) may not +.\" have taken the same level of care in the production of this manual, +.\" which is licensed free of charge, as they might when working +.\" professionally. +.\" +.\" Formatted or processed versions of this manual, if unaccompanied by +.\" the source, must acknowledge the copyright and authors of this work. +.\" +.\" References consulted: +.\" Linux libc source code +.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) +.\" 386BSD man pages +.\" Modified Sun Jul 25 10:40:51 1993 by Rik Faith (faith@cs.unc.edu) +.\" Modified Sun Apr 14 16:20:34 1996 by Andries Brouwer (aeb@cwi.nl) +.TH SIGINTERRUPT 3 1993-04-13 "" "Linux Programmer's Manual" +.SH NAME +siginterrupt \- allow signals to interrupt system calls +.SH SYNOPSIS +.nf +.B #include <signal.h> +.sp +.BI "int siginterrupt(int " sig ", int " flag ); +.fi +.SH DESCRIPTION +The \fBsiginterrupt()\fP function changes the restart behaviour when +a system call is interrupted by the signal \fIsig\fP. If the \fIflag\fP +argument is false (0), then system calls will be restarted if interrupted +by the specified signal \fIsig\fP. This is the default behaviour in +Linux. However, when a new signal handler is specified with the +\fBsignal\fP(2) function, the system call is interrupted by default. +.PP +If the \fIflags\fP argument is true (1) and no data has been transferred, +then a system call interrupted by the signal \fIsig\fP will return \-1 +and the global variable \fIerrno\fP will be set to \fBEINTR\fP. +.PP +If the \fIflags\fP argument is true (1) and data transfer has started, +then the system call will be interrupted and will return the actual +amount of data transferred. +.SH "RETURN VALUE" +The \fBsiginterrupt()\fP function returns 0 on success, or \-1 if the +signal number \fIsig\fP is invalid. +.SH ERRORS +.TP +.B EINVAL +The specified signal number is invalid. +.SH "CONFORMING TO" +BSD 4.3 +.SH "SEE ALSO" +.BR signal (2) |