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-rw-r--r--openbsd-compat/getcwd.c44
1 files changed, 22 insertions, 22 deletions
diff --git a/openbsd-compat/getcwd.c b/openbsd-compat/getcwd.c
index d58c03e0e..9354f7ae4 100644
--- a/openbsd-compat/getcwd.c
+++ b/openbsd-compat/getcwd.c
@@ -1,3 +1,4 @@
1/* $OpenBSD: getcwd.c,v 1.14 2005/08/08 08:05:34 espie Exp $ */
1/* 2/*
2 * Copyright (c) 1989, 1991, 1993 3 * Copyright (c) 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved. 4 * The Regents of the University of California. All rights reserved.
@@ -33,10 +34,6 @@
33 34
34#if !defined(HAVE_GETCWD) 35#if !defined(HAVE_GETCWD)
35 36
36#if defined(LIBC_SCCS) && !defined(lint)
37static char rcsid[] = "$OpenBSD: getcwd.c,v 1.9 2003/06/11 21:03:10 deraadt Exp $";
38#endif /* LIBC_SCCS and not lint */
39
40#include <sys/param.h> 37#include <sys/param.h>
41#include <sys/stat.h> 38#include <sys/stat.h>
42#include <errno.h> 39#include <errno.h>
@@ -54,12 +51,12 @@ static char rcsid[] = "$OpenBSD: getcwd.c,v 1.9 2003/06/11 21:03:10 deraadt Exp
54char * 51char *
55getcwd(char *pt, size_t size) 52getcwd(char *pt, size_t size)
56{ 53{
57 register struct dirent *dp; 54 struct dirent *dp;
58 register DIR *dir = NULL; 55 DIR *dir = NULL;
59 register dev_t dev; 56 dev_t dev;
60 register ino_t ino; 57 ino_t ino;
61 register int first; 58 int first;
62 register char *bpt, *bup; 59 char *bpt, *bup;
63 struct stat s; 60 struct stat s;
64 dev_t root_dev; 61 dev_t root_dev;
65 ino_t root_ino; 62 ino_t root_ino;
@@ -80,7 +77,7 @@ getcwd(char *pt, size_t size)
80 } 77 }
81 ept = pt + size; 78 ept = pt + size;
82 } else { 79 } else {
83 if ((pt = malloc(ptsize = 1024 - 4)) == NULL) 80 if ((pt = malloc(ptsize = MAXPATHLEN)) == NULL)
84 return (NULL); 81 return (NULL);
85 ept = pt + ptsize; 82 ept = pt + ptsize;
86 } 83 }
@@ -88,13 +85,13 @@ getcwd(char *pt, size_t size)
88 *bpt = '\0'; 85 *bpt = '\0';
89 86
90 /* 87 /*
91 * Allocate bytes (1024 - malloc space) for the string of "../"'s. 88 * Allocate bytes for the string of "../"'s.
92 * Should always be enough (it's 340 levels). If it's not, allocate 89 * Should always be enough (it's 340 levels). If it's not, allocate
93 * as necessary. Special * case the first stat, it's ".", not "..". 90 * as necessary. Special * case the first stat, it's ".", not "..".
94 */ 91 */
95 if ((up = malloc(upsize = 1024 - 4)) == NULL) 92 if ((up = malloc(upsize = MAXPATHLEN)) == NULL)
96 goto err; 93 goto err;
97 eup = up + MAXPATHLEN; 94 eup = up + upsize;
98 bup = up; 95 bup = up;
99 up[0] = '.'; 96 up[0] = '.';
100 up[1] = '\0'; 97 up[1] = '\0';
@@ -139,8 +136,8 @@ getcwd(char *pt, size_t size)
139 136
140 if ((nup = realloc(up, upsize *= 2)) == NULL) 137 if ((nup = realloc(up, upsize *= 2)) == NULL)
141 goto err; 138 goto err;
139 bup = nup + (bup - up);
142 up = nup; 140 up = nup;
143 bup = up;
144 eup = up + upsize; 141 eup = up + upsize;
145 } 142 }
146 *bup++ = '.'; 143 *bup++ = '.';
@@ -175,7 +172,7 @@ getcwd(char *pt, size_t size)
175 goto notfound; 172 goto notfound;
176 if (ISDOT(dp)) 173 if (ISDOT(dp))
177 continue; 174 continue;
178 memmove(bup, dp->d_name, dp->d_namlen + 1); 175 memcpy(bup, dp->d_name, dp->d_namlen + 1);
179 176
180 /* Save the first error for later. */ 177 /* Save the first error for later. */
181 if (lstat(up, &s)) { 178 if (lstat(up, &s)) {
@@ -193,19 +190,18 @@ getcwd(char *pt, size_t size)
193 * leading slash. 190 * leading slash.
194 */ 191 */
195 if (bpt - pt < dp->d_namlen + (first ? 1 : 2)) { 192 if (bpt - pt < dp->d_namlen + (first ? 1 : 2)) {
196 size_t len, off; 193 size_t len;
197 char *npt; 194 char *npt;
198 195
199 if (!ptsize) { 196 if (!ptsize) {
200 errno = ERANGE; 197 errno = ERANGE;
201 goto err; 198 goto err;
202 } 199 }
203 off = bpt - pt;
204 len = ept - bpt; 200 len = ept - bpt;
205 if ((npt = realloc(pt, ptsize *= 2)) == NULL) 201 if ((npt = realloc(pt, ptsize *= 2)) == NULL)
206 goto err; 202 goto err;
203 bpt = npt + (bpt - pt);
207 pt = npt; 204 pt = npt;
208 bpt = pt + off;
209 ept = pt + ptsize; 205 ept = pt + ptsize;
210 memmove(ept - len, bpt, len); 206 memmove(ept - len, bpt, len);
211 bpt = ept - len; 207 bpt = ept - len;
@@ -213,7 +209,7 @@ getcwd(char *pt, size_t size)
213 if (!first) 209 if (!first)
214 *--bpt = '/'; 210 *--bpt = '/';
215 bpt -= dp->d_namlen; 211 bpt -= dp->d_namlen;
216 memmove(bpt, dp->d_name, dp->d_namlen); 212 memcpy(bpt, dp->d_name, dp->d_namlen);
217 (void)closedir(dir); 213 (void)closedir(dir);
218 214
219 /* Truncate any file name. */ 215 /* Truncate any file name. */
@@ -230,12 +226,16 @@ notfound:
230 errno = save_errno ? save_errno : ENOENT; 226 errno = save_errno ? save_errno : ENOENT;
231 /* FALLTHROUGH */ 227 /* FALLTHROUGH */
232err: 228err:
229 save_errno = errno;
230
233 if (ptsize) 231 if (ptsize)
234 free(pt); 232 free(pt);
235 if (up) 233 free(up);
236 free(up);
237 if (dir) 234 if (dir)
238 (void)closedir(dir); 235 (void)closedir(dir);
236
237 errno = save_errno;
238
239 return (NULL); 239 return (NULL);
240} 240}
241 241