.\" Hey Emacs! This file is -*- nroff -*- source.
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.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
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.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date.  The author(s) assume no
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.\" the use of the information contained herein.  The author(s) may not
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.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
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.\" Modified by Michael Haardt <michael@moria.de>
.\" Modified Sat Jul 24 12:02:47 1993 by Rik Faith <faith@cs.unc.edu>
.\" Modified 15 Apr 1995 by Michael Chastain <mec@shell.portal.com>:
.\"   Added reference to `bdflush(2)'.
.\" Modified 960414 by Andries Brouwer <aeb@cwi.nl>:
.\"   Added the fact that since 1.3.20 sync actually waits.
.\" Modified Tue Oct 22 22:27:07 1996 by Eric S. Raymond <esr@thyrsus.com>
.\" Translated into Spanish Wed Feb 4 1998 by Gerardo Aburruzaga
.\" García <gerardo.aburruzaga@uca.es>
.\"
.TH SYNC 2 "27 octubre 1996" "Linux 1.3.88" "Manual del Programador de Linux"
.SH NOMBRE
sync \- entrega el búfer caché al disco
.SH SINOPSIS
.B #include <unistd.h>
.sp
.B int sync(void);
.SH DESCRIPCIÓN
.B sync
primero entrega los nodos-í a los búferes, y luego éstos al disco.
.SH "VALOR DEVUELTO"
.B sync
siempre devuelve 0.
.SH "CONFORME A"
SVr4, SVID, X/OPEN, BSD 4.3
.SH FALLOS
De acuerdo con la especificación del estándar (p. ej., SVID),
\fBsync()\fP planifica las escrituras, pero puede regresar antes de
que la escritura real tenga lugar.
Sin embargo, desde la versión 1.3.20, Linux sí espera realmente.
(Esto aún no garantiza la integridad de los datos: los discos modernos
tienen grandes cachés.)
.SH "VÉASE TAMBIÉN"
.BR bdflush (2),
.BR fsync (2),
.BR fdatasync (2),
.BR update (8),
.BR sync (8)