source:
rtems/c/src/exec/libcsupport/src/eval.c
@
9c3fa30
Last change on this file since 9c3fa30 was 9c3fa30, checked in by Joel Sherrill <joel.sherrill@…>, on 09/28/00 at 20:19:23 | |
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File size: 1.8 KB |
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1 | /* |
2 | * rtems_filesystem_evaluate_path() |
3 | * |
4 | * Routine to seed the evaluate path routine. |
5 | * |
6 | * COPYRIGHT (c) 1989-1999. |
7 | * On-Line Applications Research Corporation (OAR). |
8 | * |
9 | * The license and distribution terms for this file may be |
10 | * found in the file LICENSE in this distribution or at |
11 | * http://www.OARcorp.com/rtems/license.html. |
12 | * |
13 | * $Id$ |
14 | */ |
15 | |
16 | #include <rtems.h> |
17 | #include "libio_.h" |
18 | |
19 | int rtems_filesystem_evaluate_path( |
20 | const char *pathname, |
21 | int flags, |
22 | rtems_filesystem_location_info_t *pathloc, |
23 | int follow_link |
24 | ) |
25 | { |
26 | int i; |
27 | int result; |
28 | rtems_filesystem_node_types_t type; |
29 | |
30 | /* |
31 | * Verify Input parameters. |
32 | */ |
33 | |
34 | if ( !pathname ) |
35 | set_errno_and_return_minus_one( EFAULT ); |
36 | |
37 | if ( !pathloc ) |
38 | set_errno_and_return_minus_one( EIO ); /* should never happen */ |
39 | |
40 | /* |
41 | * Evaluate the path using the optable evalpath. |
42 | */ |
43 | |
44 | rtems_filesystem_get_start_loc( pathname, &i, pathloc ); |
45 | |
46 | if ( !pathloc->ops->evalpath_h ) |
47 | set_errno_and_return_minus_one( ENOTSUP ); |
48 | |
49 | result = (*pathloc->ops->evalpath_h)( &pathname[i], flags, pathloc ); |
50 | |
51 | /* |
52 | * Get the Node type and determine if you need to follow the link or |
53 | * not. |
54 | */ |
55 | |
56 | if ( (result == 0) && follow_link ) { |
57 | |
58 | if ( !pathloc->ops->node_type_h ) |
59 | set_errno_and_return_minus_one( ENOTSUP ); |
60 | |
61 | type = (*pathloc->ops->node_type_h)( pathloc ); |
62 | |
63 | if ( ( type == RTEMS_FILESYSTEM_HARD_LINK ) || |
64 | ( type == RTEMS_FILESYSTEM_SYM_LINK ) ) { |
65 | |
66 | if ( !pathloc->ops->eval_link_h ) |
67 | set_errno_and_return_minus_one( ENOTSUP ); |
68 | |
69 | result = (*pathloc->ops->eval_link_h)( pathloc, flags ); |
70 | |
71 | } |
72 | } |
73 | |
74 | return result; |
75 | } |
76 |
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