Movatterモバイル変換

shutdown(3p) — Linux manual page

SHUTDOWN(3P)            POSIX Programmer's ManualSHUTDOWN(3P)

PROLOG        top

       This manual page is part of the POSIX Programmer's Manual.  The       Linux implementation of this interface may differ (consult the       corresponding Linux manual page for details of Linux behavior), or       the interface may not be implemented on Linux.

NAME        top

       shutdown — shut down socket send and receive operations

SYNOPSIS        top

       #include <sys/socket.h>       int shutdown(intsocket, inthow);

DESCRIPTION        top

       Theshutdown() function shall cause all or part of a full-duplex       connection on the socket associated with the file descriptorsocket to be shut down.       Theshutdown() function takes the following arguments:socket      Specifies the file descriptor of the socket.how         Specifies the type of shutdown. The values are as                   follows:                   SHUT_RD     Disables further receive operations.                   SHUT_WR     Disables further send operations.                   SHUT_RDWR   Disables further send and receive                               operations.       Theshutdown() function disables subsequent send and/or receive       operations on a socket, depending on the value of thehow       argument.

RETURN VALUE        top

       Upon successful completion,shutdown() shall return 0; otherwise,       -1 shall be returned anderrno set to indicate the error.

ERRORS        top

       Theshutdown() function shall fail if:EBADFThesocket argument is not a valid file descriptor.EINVALThehow argument is invalid.ENOTCONN              The socket is not connected.ENOTSOCK              Thesocket argument does not refer to a socket.       Theshutdown() function may fail if:ENOBUFS              Insufficient resources were available in the system to              perform the operation.The following sections are informative.

EXAMPLES        top

       None.

APPLICATION USAGE        top

       None.

RATIONALE        top

       None.

FUTURE DIRECTIONS        top

       None.

SEE ALSO        top

getsockopt(3p),pselect(3p),read(3p),recv(3p),recvfrom(3p),recvmsg(3p),send(3p),sendto(3p),setsockopt(3p),socket(3p),write(3p)       The Base Definitions volume of POSIX.1‐2017,sys_socket.h(0p)

COPYRIGHT        top

       Portions of this text are reprinted and reproduced in electronic       form from IEEE Std 1003.1-2017, Standard for Information       Technology -- Portable Operating System Interface (POSIX), The       Open Group Base Specifications Issue 7, 2018 Edition, Copyright       (C) 2018 by the Institute of Electrical and Electronics Engineers,       Inc and The Open Group.  In the event of any discrepancy between       this version and the original IEEE and The Open Group Standard,       the original IEEE and The Open Group Standard is the referee       document. The original Standard can be obtained online athttp://www.opengroup.org/unix/online.html .       Any typographical or formatting errors that appear in this page       are most likely to have been introduced during the conversion of       the source files to man page format. To report such errors, seehttps://www.kernel.org/doc/man-pages/reporting_bugs.html .IEEE/The Open Group                2017SHUTDOWN(3P)

Pages that refer to this page:sys_socket.h(0p), connect(3p), recv(3p), recvfrom(3p), recvmsg(3p), send(3p), sendmsg(3p), sendto(3p), socket(3p)

HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH.