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1899
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1 --- ccache.1.orig 2007-05-20 17:30:57.000000000 +1200
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2 +++ ccache.1 2007-05-20 17:31:27.000000000 +1200
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3 @@ -367,12 +367,6 @@
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4 .IP o
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5 ccache avoids a double call to cpp on a cache miss
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6 .PP
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7 -.SH "BUGS"
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8 -.PP
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9 -When the cache is stored on an NFS filesystem, the filesystem must be
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10 -exported with the \fBno_subtree_check\fP option to make renames between
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11 -directories reliable\&.
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12 -.PP
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13 .SH "CREDITS"
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14 .PP
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15 Thanks to the following people for their contributions to ccache
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16 --- util.c.patched 2007-05-20 18:19:11.000000000 +1200
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17 +++ util.c 2007-05-20 18:20:55.000000000 +1200
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18 @@ -58,9 +58,26 @@
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19 }
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20 }
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21
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22 +static int safe_rename(const char* oldpath, const char* newpath)
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23 +{
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24 + /* safe_rename is for creating entries in the cache.
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25 +
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26 + Works like rename(), but it never overwrites an existing
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27 + cache entry. This avoids corruption on NFS. */
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28 + int status = link( oldpath, newpath );
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29 + if( status == 0 || errno == EEXIST )
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30 + {
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31 + return unlink( oldpath );
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32 + }
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33 + else
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34 + {
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35 + return -1;
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36 + }
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37 +}
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38 +
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39 /* move a file using rename */
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40 int move_file(const char *src, const char *dest) {
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41 - return rename(src, dest);
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42 + return safe_rename(src, dest);
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43 }
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44
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45 /* copy a file - used when hard links don't work
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