1 | /* |
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2 | * RTEMS Fake System Calls |
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3 | * |
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4 | * This file contains "fake" versions of the system call routines |
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5 | * which are reference by many libc implementations. Once a routine |
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6 | * has been implemented in terms of RTEMS services, it should be |
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7 | * taken out of this file. |
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8 | * |
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9 | * COPYRIGHT (c) 1989-1998. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * Copyright assigned to U.S. Government, 1994. |
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12 | * |
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13 | * The license and distribution terms for this file may be |
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14 | * found in the file LICENSE in this distribution or at |
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15 | * http://www.OARcorp.com/rtems/license.html. |
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16 | * |
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17 | * $Id$ |
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18 | * |
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19 | */ |
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20 | |
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21 | #include <sys/types.h> |
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22 | #include <sys/stat.h> |
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23 | #include <assert.h> |
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24 | #include <errno.h> |
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25 | #include <string.h> |
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26 | #include <stdio.h> /* only for puts */ |
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27 | |
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28 | #include <rtems.h> |
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29 | #include <rtems/libio.h> |
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30 | |
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31 | #ifdef RTEMS_NEWLIB |
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32 | /* |
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33 | * fstat, stat, and isatty must lie consistently and report that everything |
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34 | * is a tty or stdout will not be line buffered. |
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35 | */ |
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36 | |
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37 | int __rtems_fstat(int _fd, struct stat* _sbuf) |
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38 | { |
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39 | #ifdef HAVE_BLKSIZE |
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40 | _sbuf->st_blksize = 0; |
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41 | #endif |
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42 | |
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43 | /* |
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44 | * For now assume stdin/stdout/stderr are always a TTY line |
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45 | * |
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46 | * From Eric Norum: |
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47 | * |
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48 | * The `fix' is not complete. It still doesn't properly handle |
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49 | * file descriptors for any files/devices other than the console |
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50 | * serial lines..... |
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51 | */ |
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52 | if (_fd <= 2) { |
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53 | _sbuf->st_mode = S_IFCHR; |
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54 | } else { |
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55 | switch (rtems_file_descriptor_type (_fd)) { |
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56 | case RTEMS_FILE_DESCRIPTOR_TYPE_FILE: |
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57 | _sbuf->st_mode = S_IFREG; |
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58 | break; |
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59 | |
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60 | case RTEMS_FILE_DESCRIPTOR_TYPE_SOCKET: |
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61 | _sbuf->st_mode = S_IFSOCK; |
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62 | break; |
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63 | |
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64 | default: |
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65 | puts( "__rtems_fstat -- unknown file descriptor type" ); |
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66 | assert( 0 ); |
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67 | } |
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68 | } |
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69 | return 0; |
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70 | } |
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71 | |
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72 | int __rtems_isatty(int _fd) |
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73 | { |
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74 | struct stat st; |
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75 | |
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76 | if (__rtems_fstat(_fd, &st) < 0) |
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77 | return 0; |
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78 | return S_ISCHR (st.st_mode); |
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79 | } |
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80 | |
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81 | #if !defined(RTEMS_UNIX) |
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82 | int stat( const char *path, struct stat *buf ) |
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83 | { |
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84 | if ( strncmp( "/dev/", path, 5 ) ) { |
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85 | return -1; |
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86 | } |
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87 | return __rtems_fstat( 0, buf ); |
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88 | } |
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89 | |
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90 | int link( const char *existing, const char *new ) |
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91 | { |
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92 | /* always fail */ |
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93 | return -1; |
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94 | } |
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95 | |
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96 | int unlink( const char *path ) |
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97 | { |
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98 | /* always fail */ |
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99 | return -1; |
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100 | } |
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101 | |
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102 | char *getcwd( char *_buf, size_t _size) |
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103 | { |
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104 | |
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105 | /* assert( FALSE ); */ |
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106 | errno = ENOSYS; |
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107 | return 0; |
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108 | } |
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109 | int fork() { |
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110 | puts( "fork -- not supported!!!" ); |
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111 | assert( 0 ); |
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112 | errno = ENOSYS; |
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113 | return -1; |
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114 | } |
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115 | int execv(const char *_path, char * const _argv[] ) { |
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116 | puts( "execv -- not supported!!!" ); |
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117 | assert( 0 ); |
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118 | errno = ENOSYS; |
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119 | return -1; |
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120 | } |
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121 | int wait() { |
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122 | puts( "wait -- not supported!!!" ); |
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123 | assert( 0 ); |
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124 | errno = ENOSYS; |
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125 | return -1; |
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126 | } |
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127 | #endif |
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128 | |
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129 | #endif |
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