[07a3253d] | 1 | /* |
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| 2 | * rtems_filesystem_evaluate_path() |
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| 3 | * |
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| 4 | * Routine to seed the evaluate path routine. |
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| 5 | * |
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[08311cc3] | 6 | * COPYRIGHT (c) 1989-1999. |
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[07a3253d] | 7 | * On-Line Applications Research Corporation (OAR). |
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| 8 | * |
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| 9 | * The license and distribution terms for this file may be |
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| 10 | * found in the file LICENSE in this distribution or at |
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| 11 | * http://www.OARcorp.com/rtems/license.html. |
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| 12 | * |
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| 13 | * $Id$ |
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| 14 | */ |
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| 15 | |
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| 16 | #include <rtems.h> |
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| 17 | #include "libio_.h" |
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| 18 | |
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| 19 | int rtems_filesystem_evaluate_path( |
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| 20 | const char *pathname, |
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| 21 | int flags, |
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| 22 | rtems_filesystem_location_info_t *pathloc, |
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| 23 | int follow_link |
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| 24 | ) |
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| 25 | { |
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| 26 | int i; |
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| 27 | int result; |
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| 28 | rtems_filesystem_node_types_t type; |
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| 29 | |
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| 30 | /* |
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| 31 | * Verify Input parameters. |
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| 32 | */ |
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| 33 | |
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| 34 | if ( !pathname ) |
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| 35 | set_errno_and_return_minus_one( EFAULT ); |
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| 36 | |
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| 37 | if ( !pathloc ) |
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| 38 | set_errno_and_return_minus_one( EIO ); /* should never happen */ |
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| 39 | |
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| 40 | /* |
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| 41 | * Evaluate the path using the optable evalpath. |
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| 42 | */ |
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| 43 | |
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| 44 | rtems_filesystem_get_start_loc( pathname, &i, pathloc ); |
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| 45 | |
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[74835d7] | 46 | if ( !pathloc->ops->evalpath ) |
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| 47 | set_errno_and_return_minus_one( ENOTSUP ); |
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| 48 | |
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[07a3253d] | 49 | result = (*pathloc->ops->evalpath)( &pathname[i], flags, pathloc ); |
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| 50 | |
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| 51 | /* |
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| 52 | * Get the Node type and determine if you need to follow the link or |
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| 53 | * not. |
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| 54 | */ |
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| 55 | |
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[0139484] | 56 | if ( (result == 0) && follow_link ) { |
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[07a3253d] | 57 | |
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| 58 | if ( !pathloc->ops->node_type ) |
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| 59 | set_errno_and_return_minus_one( ENOTSUP ); |
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| 60 | |
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| 61 | type = (*pathloc->ops->node_type)( pathloc ); |
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| 62 | |
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| 63 | if ( ( type == RTEMS_FILESYSTEM_HARD_LINK ) || |
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| 64 | ( type == RTEMS_FILESYSTEM_SYM_LINK ) ) { |
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| 65 | |
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| 66 | if ( !pathloc->ops->eval_link ) |
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| 67 | set_errno_and_return_minus_one( ENOTSUP ); |
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| 68 | |
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| 69 | result = (*pathloc->ops->eval_link)( pathloc, flags ); |
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| 70 | |
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| 71 | } |
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| 72 | } |
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| 73 | |
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| 74 | return result; |
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| 75 | } |
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| 76 | |
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