[444] | 1 | /* open.c -- Implementation of the low-level open() routine |
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| 2 | * |
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| 3 | * Copyright (c) 2004 National Semiconductor Corporation |
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| 4 | * |
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| 5 | * The authors hereby grant permission to use, copy, modify, distribute, |
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| 6 | * and license this software and its documentation for any purpose, provided |
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| 7 | * that existing copyright notices are retained in all copies and that this |
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| 8 | * notice is included verbatim in any distributions. No written agreement, |
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| 9 | * license, or royalty fee is required for any of the authorized uses. |
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| 10 | * Modifications to this software may be copyrighted by their authors |
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| 11 | * and need not follow the licensing terms described here, provided that |
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| 12 | * the new terms are clearly indicated on the first page of each file where |
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| 13 | * they apply. |
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| 14 | */ |
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| 15 | |
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| 16 | #include <sys/syscall.h> |
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| 17 | #include <stdarg.h> |
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| 18 | |
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| 19 | int open_aux (char *, int, int); |
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| 20 | |
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| 21 | /* The prototype in <fcntl.h> for open() uses ..., meaning function |
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| 22 | * parameters reside on stack, but the debugger expects the parameters |
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| 23 | * to reside in registers, thus we call an auxiliary function with |
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| 24 | * bounded number of parameters. |
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| 25 | */ |
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| 26 | int _open (char *path, int flags, ...) |
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| 27 | { |
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| 28 | int mode; |
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| 29 | va_list ap; |
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| 30 | |
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| 31 | va_start(ap, flags); |
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| 32 | mode = va_arg(ap, int); |
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| 33 | open_aux (path, flags, mode); |
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| 34 | va_end(ap); |
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| 35 | } |
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| 36 | |
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| 37 | int open_aux (char *path, int flags, int mode) |
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| 38 | { |
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| 39 | HOST_SERVICE (SVC_OPEN); |
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| 40 | } |
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| 41 | |
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