Mercurial > cpython-lru_cache-weakref

annotate Python/getcwd.c @ 56121:ea697cde6882 3.1

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Merged revisions 74881-74885,74888,74891-74895,74900,74905-74906,74931-74932,74934,74941-74942,74944,74956 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ........ r74881 | r.david.murray | 2009-09-17 15:12:49 -0400 (Thu, 17 Sep 2009) | 2 lines Check in first draft of maintainers.rst. ........ r74882 | eric.smith | 2009-09-17 15:22:30 -0400 (Thu, 17 Sep 2009) | 1 line Typo. ........ r74883 | mark.dickinson | 2009-09-17 15:37:28 -0400 (Thu, 17 Sep 2009) | 1 line Add some more module maintainers. ........ r74884 | mark.dickinson | 2009-09-17 15:39:12 -0400 (Thu, 17 Sep 2009) | 1 line Revert accidental changes to Objects/longobject.c ........ r74885 | mark.dickinson | 2009-09-17 16:20:01 -0400 (Thu, 17 Sep 2009) | 1 line Add decimal maintainers ........ r74888 | r.david.murray | 2009-09-17 18:10:48 -0400 (Thu, 17 Sep 2009) | 2 lines Maintainer additions from MAL. ........ r74891 | georg.brandl | 2009-09-17 18:18:01 -0400 (Thu, 17 Sep 2009) | 1 line Some more maintainers. ........ r74892 | r.david.murray | 2009-09-17 19:23:56 -0400 (Thu, 17 Sep 2009) | 2 lines Add a couple interest areas for Nick per his request. ........ r74893 | r.david.murray | 2009-09-17 19:43:20 -0400 (Thu, 17 Sep 2009) | 2 lines Benajmin is also compiler-knowledgeable. ........ r74894 | alexandre.vassalotti | 2009-09-17 20:59:05 -0400 (Thu, 17 Sep 2009) | 2 lines Added myself to my areas of interest. ........ r74895 | brett.cannon | 2009-09-17 21:03:35 -0400 (Thu, 17 Sep 2009) | 1 line Add myself to a couple places as maintainer. ........ r74900 | georg.brandl | 2009-09-18 05:06:37 -0400 (Fri, 18 Sep 2009) | 1 line Add myself in interest areas. ........ r74905 | ezio.melotti | 2009-09-18 05:58:43 -0400 (Fri, 18 Sep 2009) | 1 line Add myself in interest areas and mark effbot as inactive in winsound ........ r74906 | antoine.pitrou | 2009-09-18 09:15:23 -0400 (Fri, 18 Sep 2009) | 3 lines Add myself in a couple of places ........ r74931 | r.david.murray | 2009-09-18 17:25:36 -0400 (Fri, 18 Sep 2009) | 5 lines Add some names gleaned from the "Tracker Archeology" thread on python-dev from back in February. Also consolidate the autoconf and makefiles topics into one, and add tracker and svn/hg topics. ........ r74932 | r.david.murray | 2009-09-18 17:32:16 -0400 (Fri, 18 Sep 2009) | 2 lines Remove non-committer mistakenly added. ........ r74934 | r.david.murray | 2009-09-18 17:40:30 -0400 (Fri, 18 Sep 2009) | 2 lines More descriptive/generic name for the svn/hg entry (version control) ........ r74941 | benjamin.peterson | 2009-09-18 18:45:59 -0400 (Fri, 18 Sep 2009) | 1 line add a new category for myself ........ r74942 | benjamin.peterson | 2009-09-18 18:50:55 -0400 (Fri, 18 Sep 2009) | 1 line add myself for symtable ........ r74944 | georg.brandl | 2009-09-19 03:39:05 -0400 (Sat, 19 Sep 2009) | 1 line I would like to maintain the token module! ........ r74956 | r.david.murray | 2009-09-19 14:40:08 -0400 (Sat, 19 Sep 2009) | 3 lines Add everyone who we know has been a release manager as a resource for the 'release management' topic. ........
author R. David Murray <rdmurray@bitdance.com>
date Sat, 19 Sep 2009 19:04:37 +0000
parents 29ae5e0fc348
children e38335d4df91 5cea27275af1
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1
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2 /* Two PD getcwd() implementations.
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3 Author: Guido van Rossum, CWI Amsterdam, Jan 1991, <guido@cwi.nl>. */
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4
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5 #include <stdio.h>
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6 #include <errno.h>
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7
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8 #ifdef HAVE_GETWD
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9
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10 /* Version for BSD systems -- use getwd() */
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12 #ifdef HAVE_SYS_PARAM_H
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13 #include <sys/param.h>
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14 #endif
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16 #ifndef MAXPATHLEN
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17 #if defined(PATH_MAX) && PATH_MAX > 1024
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18 #define MAXPATHLEN PATH_MAX
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19 #else
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20 #define MAXPATHLEN 1024
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21 #endif
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22 #endif
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24 extern char *getwd(char *);
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26 char *
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27 getcwd(char *buf, int size)
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28 {
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29 char localbuf[MAXPATHLEN+1];
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30 char *ret;
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31
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32 if (size <= 0) {
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33 errno = EINVAL;
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34 return NULL;
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35 }
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36 ret = getwd(localbuf);
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37 if (ret != NULL && strlen(localbuf) >= (size_t)size) {
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38 errno = ERANGE;
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39 return NULL;
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40 }
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41 if (ret == NULL) {
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42 errno = EACCES; /* Most likely error */
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43 return NULL;
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44 }
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45 strncpy(buf, localbuf, size);
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46 return buf;
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47 }
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48
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49 #else /* !HAVE_GETWD */
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50
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51 /* Version for really old UNIX systems -- use pipe from pwd */
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52
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53 #ifndef PWD_CMD
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54 #define PWD_CMD "/bin/pwd"
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55 #endif
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57 char *
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58 getcwd(char *buf, int size)
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59 {
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60 FILE *fp;
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61 char *p;
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62 int sts;
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63 if (size <= 0) {
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64 errno = EINVAL;
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65 return NULL;
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66 }
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67 if ((fp = popen(PWD_CMD, "r")) == NULL)
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68 return NULL;
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69 if (fgets(buf, size, fp) == NULL || (sts = pclose(fp)) != 0) {
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70 errno = EACCES; /* Most likely error */
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71 return NULL;
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72 }
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73 for (p = buf; *p != '\n'; p++) {
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74 if (*p == '\0') {
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75 errno = ERANGE;
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76 return NULL;
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77 }
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78 }
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79 *p = '\0';
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80 return buf;
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81 }
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82
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83 #endif /* !HAVE_GETWD */