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1 To: vim-dev@vim.org
2 Subject: Patch 7.2.077
3 Fcc: outbox
4 From: Bram Moolenaar <Bram@moolenaar.net>
5 Mime-Version: 1.0
6 Content-Type: text/plain; charset=ISO-8859-1
7 Content-Transfer-Encoding: 8bit
8 ------------
9
10 Patch 7.2.077 (after 7.2.076)
11 Problem:    rename(from, to) doesn't work if "from" and "to" differ only in
12             case on a system that ignores case in file names.
13 Solution:   Go through another file name.
14 Files:      src/fileio.c
15
16
17 *** ../vim-7.2.076/src/fileio.c Tue Dec 30 16:15:16 2008
18 --- src/fileio.c        Wed Dec 31 14:59:59 2008
19 ***************
20 *** 6106,6117 ****
21   #ifdef HAVE_ACL
22       vim_acl_T acl;            /* ACL from original file */
23   #endif
24   
25       /*
26 !      * When the names are identical, there is nothing to do.
27        */
28       if (fnamecmp(from, to) == 0)
29 !       return 0;
30   
31       /*
32        * Fail if the "from" file doesn't exist.  Avoids that "to" is deleted.
33 --- 6106,6129 ----
34   #ifdef HAVE_ACL
35       vim_acl_T acl;            /* ACL from original file */
36   #endif
37 + #if defined(UNIX) || defined(CASE_INSENSITIVE_FILENAME)
38 +     int               use_tmp_file = FALSE;
39 + #endif
40   
41       /*
42 !      * When the names are identical, there is nothing to do.  When they refer
43 !      * to the same file (ignoring case and slash/backslash differences) but
44 !      * the file name differs we need to go through a temp file.
45        */
46       if (fnamecmp(from, to) == 0)
47 !     {
48 ! #ifdef CASE_INSENSITIVE_FILENAME
49 !       if (STRCMP(gettail(from), gettail(to)) != 0)
50 !           use_tmp_file = TRUE;
51 !       else
52 ! #endif
53 !           return 0;
54 !     }
55   
56       /*
57        * Fail if the "from" file doesn't exist.  Avoids that "to" is deleted.
58 ***************
59 *** 6122,6128 ****
60   #ifdef UNIX
61       {
62         struct stat     st_to;
63 -       char            tempname[MAXPATHL + 1];
64   
65         /* It's possible for the source and destination to be the same file.
66          * This happens when "from" and "to" differ in case and are on a FAT32
67 --- 6134,6139 ----
68 ***************
69 *** 6130,6162 ****
70         if (mch_stat((char *)to, &st_to) >= 0
71                 && st.st_dev == st_to.st_dev
72                 && st.st_ino == st_to.st_ino)
73         {
74 !           /* Find a name that doesn't exist and is in the same directory.
75 !            * Move "from" to "tempname" and then to "to". */
76 !           if (STRLEN(from) >= MAXPATHL - 5)
77 !               return -1;
78 !           STRCPY(tempname, from);
79 !           for (n = 123; n < 99999; ++n)
80             {
81 !               sprintf(gettail(tempname), "%d", n);
82 !               if (mch_stat(tempname, &st_to) < 0)
83                 {
84 !                   if (mch_rename((char *)from, tempname) == 0)
85 !                   {
86 !                       if (mch_rename(tempname, (char *)to) == 0)
87 !                           return 0;
88 !                       /* Strange, the second step failed.  Try moving the
89 !                        * file back and return failure. */
90 !                       mch_rename(tempname, (char *)from);
91 !                       return -1;
92 !                   }
93 !                   /* If it fails for one temp name it will most likely fail
94 !                    * for any temp name, give up. */
95                     return -1;
96                 }
97             }
98 -           return -1;
99         }
100       }
101   #endif
102   
103 --- 6141,6182 ----
104         if (mch_stat((char *)to, &st_to) >= 0
105                 && st.st_dev == st_to.st_dev
106                 && st.st_ino == st_to.st_ino)
107 +           use_tmp_file = TRUE;
108 +     }
109 + #endif
110
111 + #if defined(UNIX) || defined(CASE_INSENSITIVE_FILENAME)
112 +     if (use_tmp_file)
113 +     {
114 +       char    tempname[MAXPATHL + 1];
115
116 +       /*
117 +        * Find a name that doesn't exist and is in the same directory.
118 +        * Rename "from" to "tempname" and then rename "tempname" to "to".
119 +        */
120 +       if (STRLEN(from) >= MAXPATHL - 5)
121 +           return -1;
122 +       STRCPY(tempname, from);
123 +       for (n = 123; n < 99999; ++n)
124         {
125 !           sprintf((char *)gettail((char_u *)tempname), "%d", n);
126 !           if (mch_stat(tempname, &st) < 0)
127             {
128 !               if (mch_rename((char *)from, tempname) == 0)
129                 {
130 !                   if (mch_rename(tempname, (char *)to) == 0)
131 !                       return 0;
132 !                   /* Strange, the second step failed.  Try moving the
133 !                    * file back and return failure. */
134 !                   mch_rename(tempname, (char *)from);
135                     return -1;
136                 }
137 +               /* If it fails for one temp name it will most likely fail
138 +                * for any temp name, give up. */
139 +               return -1;
140             }
141         }
142 +       return -1;
143       }
144   #endif
145   
146 *** ../vim-7.2.076/src/version.c        Tue Dec 30 16:15:16 2008
147 --- src/version.c       Wed Dec 31 16:19:29 2008
148 ***************
149 *** 678,679 ****
150 --- 678,681 ----
151   {   /* Add new patch number below this line */
152 + /**/
153 +     77,
154   /**/
155
156 -- 
157 We apologise again for the fault in the subtitles.  Those responsible for
158 sacking the people who have just been sacked have been sacked.
159                  "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD
160
161  /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
162 ///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
163 \\\        download, build and distribute -- http://www.A-A-P.org        ///
164  \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///
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