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annotate lib/getcwd.c @ 5491:b3d5c90efc81

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Merge from coreutils for getcwd and HP-UX 11.
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 26 Nov 2004 08:35:29 +0000
parents 3d7c80bdf362
children 41fd04e6a198
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1 /* Copyright (C) 1991,92,93,94,95,96,97,98,99,2004 Free Software Foundation,
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2 Inc.
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3 This file is part of the GNU C Library.
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 2, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License along
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16 with this program; if not, write to the Free Software Foundation,
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17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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18
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19 #ifdef HAVE_CONFIG_H
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20 # include "config.h"
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21 #endif
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22
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23 #if !_LIBC
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24 # include "getcwd.h"
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25 #endif
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26
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27 #include <errno.h>
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28 #include <sys/types.h>
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29 #include <sys/stat.h>
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30 #include <stdbool.h>
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31 #include <stddef.h>
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32
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33 #if HAVE_FCNTL_H
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34 # include <fcntl.h> /* For AT_FDCWD on Solaris 9. */
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35 #endif
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36
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37 #ifndef __set_errno
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38 # define __set_errno(val) (errno = (val))
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39 #endif
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40
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41 #if HAVE_DIRENT_H || _LIBC
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42 # include <dirent.h>
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43 # ifndef _D_EXACT_NAMLEN
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44 # define _D_EXACT_NAMLEN(d) strlen ((d)->d_name)
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45 # endif
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46 #else
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47 # define dirent direct
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48 # if HAVE_SYS_NDIR_H
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49 # include <sys/ndir.h>
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50 # endif
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51 # if HAVE_SYS_DIR_H
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52 # include <sys/dir.h>
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53 # endif
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54 # if HAVE_NDIR_H
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55 # include <ndir.h>
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56 # endif
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57 #endif
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58 #ifndef _D_EXACT_NAMLEN
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59 # define _D_EXACT_NAMLEN(d) ((d)->d_namlen)
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60 #endif
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61 #ifndef _D_ALLOC_NAMLEN
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62 # define _D_ALLOC_NAMLEN(d) (_D_EXACT_NAMLEN (d) + 1)
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63 #endif
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64
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65 #if HAVE_UNISTD_H || _LIBC
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66 # include <unistd.h>
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67 #endif
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68
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69 #include <stdlib.h>
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70 #include <string.h>
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71
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72 #if _LIBC
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73 # ifndef mempcpy
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74 # define mempcpy __mempcpy
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75 # endif
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76 #else
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77 # include "mempcpy.h"
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78 #endif
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79
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80 #include <limits.h>
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81
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82 #ifndef MAX
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83 # define MAX(a, b) ((a) < (b) ? (b) : (a))
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84 #endif
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85 #ifndef MIN
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86 # define MIN(a, b) ((a) < (b) ? (a) : (b))
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87 #endif
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88
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89 #ifndef PATH_MAX
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90 # ifdef MAXPATHLEN
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91 # define PATH_MAX MAXPATHLEN
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92 # else
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93 # define PATH_MAX 1024
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94 # endif
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95 #endif
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96
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97 #if D_INO_IN_DIRENT
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98 # define MATCHING_INO(dp, ino) ((dp)->d_ino == (ino))
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99 #else
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100 # define MATCHING_INO(dp, ino) true
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101 #endif
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102
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103 #if !_LIBC
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104 # define __getcwd getcwd
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105 # define __lstat lstat
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106 # define __closedir closedir
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107 # define __opendir opendir
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108 # define __readdir readdir
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109 #endif
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110
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111 /* Get the pathname of the current working directory, and put it in SIZE
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112 bytes of BUF. Returns NULL if the directory couldn't be determined or
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113 SIZE was too small. If successful, returns BUF. In GNU, if BUF is
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114 NULL, an array is allocated with `malloc'; the array is SIZE bytes long,
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115 unless SIZE == 0, in which case it is as big as necessary. */
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116
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117 char *
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118 __getcwd (char *buf, size_t size)
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119 {
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120 /* Lengths of big file name components and entire file names, and a
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121 deep level of file name nesting. These numbers are not upper
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122 bounds; they are merely large values suitable for initial
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123 allocations, designed to be large enough for most real-world
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124 uses. */
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125 enum
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126 {
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127 BIG_FILE_NAME_COMPONENT_LENGTH = 255,
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128 BIG_FILE_NAME_LENGTH = MIN (4095, PATH_MAX - 1),
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
129 DEEP_NESTING = 100
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
130 };
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
131
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
132 #ifdef AT_FDCWD
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
133 int fd = AT_FDCWD;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
134 bool fd_needs_closing = false;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
135 #else
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
136 char dots[DEEP_NESTING * sizeof ".." + BIG_FILE_NAME_COMPONENT_LENGTH + 1];
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
137 char *dotlist = dots;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
138 size_t dotsize = sizeof dots;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
139 size_t dotlen = 0;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
140 #endif
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
141 DIR *dirstream = NULL;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
142 dev_t rootdev, thisdev;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
143 ino_t rootino, thisino;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
144 char *path;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
145 register char *pathp;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
146 struct stat st;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
147 int prev_errno = errno;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
148 size_t allocated = size;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
149
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
150 if (size == 0)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
151 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
152 if (buf != NULL)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
153 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
154 __set_errno (EINVAL);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
155 return NULL;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
156 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
157
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
158 allocated = BIG_FILE_NAME_LENGTH + 1;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
159 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
160
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
161 if (buf != NULL)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
162 path = buf;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
163 else
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
164 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
165 path = malloc (allocated);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
166 if (path == NULL)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
167 return NULL;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
168 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
169
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
170 pathp = path + allocated;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
171 *--pathp = '\0';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
172
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
173 if (__lstat (".", &st) < 0)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
174 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
175 thisdev = st.st_dev;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
176 thisino = st.st_ino;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
177
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
178 if (__lstat ("/", &st) < 0)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
179 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
180 rootdev = st.st_dev;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
181 rootino = st.st_ino;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
182
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
183 while (!(thisdev == rootdev && thisino == rootino))
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
184 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
185 struct dirent *d;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
186 dev_t dotdev;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
187 ino_t dotino;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
188 bool mount_point;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
189 int parent_status;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
190
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
191 /* Look at the parent directory. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
192 #ifdef AT_FDCWD
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
193 fd = openat (fd, "..", O_RDONLY);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
194 if (fd < 0)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
195 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
196 fd_needs_closing = true;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
197 parent_status = fstat (fd, &st);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
198 #else
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
199 dotlist[dotlen++] = '.';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
200 dotlist[dotlen++] = '.';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
201 dotlist[dotlen] = '\0';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
202 parent_status = __lstat (dotlist, &st);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
203 #endif
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
204 if (parent_status != 0)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
205 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
206
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
207 if (dirstream && __closedir (dirstream) != 0)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
208 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
209 dirstream = NULL;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
210 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
211 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
212
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
213 /* Figure out if this directory is a mount point. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
214 dotdev = st.st_dev;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
215 dotino = st.st_ino;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
216 mount_point = dotdev != thisdev;
5136
3d7c80bdf362 New getcwd module, imported from coreutils.
Paul Eggert <eggert@cs.ucla.edu>
parents:
diff changeset
217
5491
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
218 /* Search for the last directory. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
219 #ifdef AT_FDCWD
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
220 dirstream = fdopendir (fd);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
221 if (dirstream == NULL)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
222 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
223 fd_needs_closing = false;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
224 #else
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
225 dirstream = __opendir (dotlist);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
226 if (dirstream == NULL)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
227 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
228 dotlist[dotlen++] = '/';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
229 #endif
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
230 /* Clear errno to distinguish EOF from error if readdir returns
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
231 NULL. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
232 __set_errno (0);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
233 while ((d = __readdir (dirstream)) != NULL)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
234 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
235 if (d->d_name[0] == '.' &&
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
236 (d->d_name[1] == '\0' ||
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
237 (d->d_name[1] == '.' && d->d_name[2] == '\0')))
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
238 continue;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
239 if (MATCHING_INO (d, thisino) || mount_point)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
240 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
241 int entry_status;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
242 #ifdef AT_FDCWD
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
243 entry_status = fstatat (fd, d->d_name, &st, AT_SYMLINK_NOFOLLOW);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
244 #else
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
245 /* Compute size needed for this file name, or for the file
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
246 name ".." in the same directory, whichever is larger.
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
247 Room for ".." might be needed the next time through
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
248 the outer loop. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
249 size_t name_alloc = _D_ALLOC_NAMLEN (d);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
250 size_t filesize = dotlen + MAX (sizeof "..", name_alloc);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
251
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
252 if (filesize < dotlen)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
253 goto memory_exhausted;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
254
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
255 if (dotsize < filesize)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
256 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
257 /* My, what a deep directory tree you have, Grandma. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
258 size_t newsize = MAX (filesize, dotsize * 2);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
259 size_t i;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
260 if (newsize < dotsize)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
261 goto memory_exhausted;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
262 if (dotlist != dots)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
263 free (dotlist);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
264 dotlist = malloc (newsize);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
265 if (dotlist == NULL)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
266 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
267 dotsize = newsize;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
268
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
269 i = 0;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
270 do
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
271 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
272 dotlist[i++] = '.';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
273 dotlist[i++] = '.';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
274 dotlist[i++] = '/';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
275 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
276 while (i < dotlen);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
277 }
5136
3d7c80bdf362 New getcwd module, imported from coreutils.
Paul Eggert <eggert@cs.ucla.edu>
parents:
diff changeset
278
5491
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
279 strcpy (dotlist + dotlen, d->d_name);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
280 entry_status = __lstat (dotlist, &st);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
281 #endif
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
282 /* We don't fail here if we cannot stat() a directory entry.
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
283 This can happen when (network) file systems fail. If this
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
284 entry is in fact the one we are looking for we will find
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
285 out soon as we reach the end of the directory without
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
286 having found anything. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
287 if (entry_status == 0 && S_ISDIR (st.st_mode)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
288 && st.st_dev == thisdev && st.st_ino == thisino)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
289 break;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
290 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
291 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
292 if (d == NULL)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
293 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
294 if (errno == 0)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
295 /* EOF on dirstream, which means that the current directory
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
296 has been removed. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
297 __set_errno (ENOENT);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
298 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
299 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
300 else
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
301 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
302 size_t pathroom = pathp - path;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
303 size_t namlen = _D_EXACT_NAMLEN (d);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
304
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
305 if (pathroom <= namlen)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
306 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
307 if (size != 0)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
308 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
309 __set_errno (ERANGE);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
310 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
311 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
312 else
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
313 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
314 char *tmp;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
315 size_t oldsize = allocated;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
316
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
317 allocated += MAX (allocated, namlen);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
318 if (allocated < oldsize
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
319 || ! (tmp = realloc (path, allocated)))
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
320 goto memory_exhausted;
5136
3d7c80bdf362 New getcwd module, imported from coreutils.
Paul Eggert <eggert@cs.ucla.edu>
parents:
diff changeset
321
5491
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
322 /* Move current contents up to the end of the buffer.
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
323 This is guaranteed to be non-overlapping. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
324 pathp = memcpy (tmp + allocated - (oldsize - pathroom),
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
325 tmp + pathroom,
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
326 oldsize - pathroom);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
327 path = tmp;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
328 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
329 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
330 pathp -= namlen;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
331 memcpy (pathp, d->d_name, namlen);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
332 *--pathp = '/';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
333 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
334
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
335 thisdev = dotdev;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
336 thisino = dotino;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
337 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
338
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
339 if (dirstream && __closedir (dirstream) != 0)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
340 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
341 dirstream = NULL;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
342 goto lose;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
343 }
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
344
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
345 if (pathp == &path[allocated - 1])
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
346 *--pathp = '/';
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
347
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
348 #ifndef AT_FDCWD
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
349 if (dotlist != dots)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
350 free (dotlist);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
351 #endif
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
352
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
353 memmove (path, pathp, path + allocated - pathp);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
354
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
355 /* Restore errno on successful return. */
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
356 __set_errno (prev_errno);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
357
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
358 return path;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
359
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
360 memory_exhausted:
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
361 __set_errno (ENOMEM);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
362 lose:
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
363 {
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
364 int save = errno;
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
365 if (dirstream)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
366 __closedir (dirstream);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
367 #ifdef AT_FDCWD
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
368 if (fd_needs_closing)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
369 close (fd);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
370 #else
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
371 if (dotlist != dots)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
372 free (dotlist);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
373 #endif
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
374 if (buf == NULL)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
375 free (path);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
376 __set_errno (save);
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
377 }
5136
3d7c80bdf362 New getcwd module, imported from coreutils.
Paul Eggert <eggert@cs.ucla.edu>
parents:
diff changeset
378 return NULL;
3d7c80bdf362 New getcwd module, imported from coreutils.
Paul Eggert <eggert@cs.ucla.edu>
parents:
diff changeset
379 }
5491
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
380
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
381 #ifdef weak_alias
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
382 weak_alias (__getcwd, getcwd)
b3d5c90efc81 Merge from coreutils for getcwd and HP-UX 11.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5136
diff changeset
383 #endif