1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/*
* $Id: pread.c,v 1.1 2005/03/31 13:13:01 baud Exp $
*/
/*
* Copyright (C) 1993-2002 by CERN/IT/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: pread.c,v $ $Revision: 1.1 $ $Date: 2005/03/31 13:13:01 $ CERN/IT/PDP/DM Felix Hassine";
#endif /* not lint */
/* pread.c Remote command I/O - read from a popened command */
#define RFIO_KERNEL 1 /* KERNEL part of the routines */
#include "rfio.h" /* Remote File I/O general definitions */
#include "rfio_rfilefdt.h"
int DLL_DECL rfio_pread(ptr, size, items, fp) /* Remote file read */
char *ptr; /* buffer pointer */
int size, items; /* .. size items */
RFILE *fp; /* remote file pointer */
{
int status ;
int rcode;
char *p ;
char buf[256]; /* General input/output buffer */
INIT_TRACE("RFIO_TRACE");
TRACE(1, "rfio", "rfio_pread(%x, %d, %d, %x)", ptr, size, items, fp);
if (rfio_rfilefdt_findptr(fp,FINDRFILE_WITH_SCAN) == -1) {
TRACE(3,"rfio","local pread(%x,%d,%d,%x)",ptr, size, items, &(fp->fp));
status = fread(ptr, size, items, fp->fp_save) ;
END_TRACE();
rfio_errno = 0;
if ( status > 0) ptr[status]= '\0' ;
else serrno = 0;
return status ;
}
p = buf ;
marshall_WORD(p, RFIO_MAGIC);
marshall_WORD(p, RQST_FREAD);
marshall_LONG(p, size);
marshall_LONG(p, items);
TRACE(3, "rfio", "rfio_pread: sending %d bytes", 2*WORDSIZE+2*LONGSIZE);
if (netwrite_timeout(fp->s, buf, RQSTSIZE, RFIO_CTRL_TIMEOUT) != RQSTSIZE ) {
TRACE(2, "rfio", "rfio_pread: write(): ERROR occured (errno=%d)", errno);
END_TRACE();
return -1 ;
}
p = buf;
TRACE(3, "rfio", "rfio_pread: reading %d bytes", 2*LONGSIZE);
if (netread_timeout(fp->s, buf, 2*LONGSIZE, -1) != (2*LONGSIZE)) {
TRACE(2, "rfio", "rfio_pread: read(): ERROR occured (errno=%d)", errno);
END_TRACE();
return -1 ;
}
unmarshall_LONG(p, status);
unmarshall_LONG(p, rcode);
rfio_errno = rcode ;
TRACE(1, "rfio", "rfio_pread: status %d, rfio_errno %d", status, rfio_errno);
if ( status > 0 ) {
TRACE(2, "rfio", "rfio_pread: reading %d bytes", status*size);
if (netread_timeout(fp->s, ptr, status*size, RFIO_DATA_TIMEOUT) != (status*size)) {
TRACE(2, "rfio", "rfio_pread: read(): ERROR occured (errno=%d)", errno);
END_TRACE();
return -1 ;
}
}
END_TRACE();
return(status);
}
|
