author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 02:01:42 +0200 | |
changeset 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
0
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/*- |
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* © Portions copyright (c) 2006 Nokia Corporation. All rights reserved. |
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* Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan |
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* (Royal Institute of Technology, Stockholm, Sweden). |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* 3. Neither the name of the Institute nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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|
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#ifndef __SYMBIAN32__ |
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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RCSID("$Id: readv.c,v 1.1.2.1.2.4 2006/11/23 11:59:59 sivanand Exp $"); |
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#endif |
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#include "roken.h" |
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#endif |
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#include <sys/types.h> |
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#include <sys/uio.h> |
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#include <unistd.h> |
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#include <stdlib.h> |
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#include <errno.h> |
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#include <string.h> |
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#include <sys/syslimits.h> |
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#define min(X , Y) ((X) < (Y) ? (X) :(Y) ) |
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|
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EXPORT_C ssize_t |
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readv(int d, const struct iovec *iov, int iovcnt) |
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{ |
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ssize_t ret, nb; |
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size_t tot = 0; |
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int VecIter = 0 ; |
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char *buf, *p; |
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|
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if(iovcnt > IOV_MAX) |
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{ |
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errno = EINVAL ; |
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return -1 ; |
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} |
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if(iovcnt < 0 ) |
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{ |
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errno = EINVAL ; |
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return -1 ; |
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} |
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|
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for(VecIter = 0; VecIter < iovcnt ; ++VecIter) |
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{ |
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if(iov[VecIter].iov_base == NULL) |
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{ |
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if(VecIter != 0) |
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{ |
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break ; //Break from the for loop |
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} |
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errno = EFAULT ; |
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return -1 ; |
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} |
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if((int)iov[VecIter].iov_len >= 0 ) |
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{ |
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tot += iov[VecIter].iov_len; |
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} |
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|
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else |
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{ |
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errno = EINVAL ; |
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return -1 ; |
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} |
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|
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} |
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|
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buf = malloc(tot); |
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|
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if (tot != 0 && buf == NULL) { |
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errno = ENOMEM; |
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return -1; |
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} |
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Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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106 |
nb = ret = read (d, buf, tot); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
107 |
p = buf; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
108 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
109 |
while (nb > 0) { |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
110 |
ssize_t cnt = min(nb, iov->iov_len); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
111 |
memcpy (iov->iov_base, p, cnt); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
112 |
p += cnt; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
113 |
nb -= cnt; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
114 |
iov += 1 ; //Newly added |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
115 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
116 |
free(buf); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
117 |
return ret; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
118 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
119 |