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* file.c (rb_file_s_readlink): readlink(2) on AIX fails with ERANGE if

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buffer size is less than required.  fixed: [ruby-dev:27634]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9505 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2005-11-06 11:18:57 +00:00
parent 563ff31625
commit 556a7ac35f
2 changed files with 12 additions and 1 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Sun Nov 6 20:13:27 2005 Nobuyoshi Nakada <nobu@ruby-lang.org>
* file.c (rb_file_s_readlink): readlink(2) on AIX fails with ERANGE if
buffer size is less than required. fixed: [ruby-dev:27634]
Sat Nov 5 13:42:50 2005 Nobuyoshi Nakada <nobu@ruby-lang.org>
* configure.in, cygwin/GNUmakefile.in (mingw): use def file to alias

8
file.c
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@ -1982,7 +1982,13 @@ rb_file_s_readlink(VALUE klass, VALUE path)
rb_secure(2);
FilePathValue(path);
buf = xmalloc(size);
while ((rv = readlink(StringValueCStr(path), buf, size)) == size) {
for (;;) {
rv = readlink(RSTRING(path)->ptr, buf, size);
#ifndef _AIX
if (rv != size) break;
#else
if (rv > 0 || errno != ERANGE) break;
#endif
size *= 2;
buf = xrealloc(buf, size);
}