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win32.c: rb_w32_reparse

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* win32/win32.c (rb_w32_reparse): read reparse point in a dynamic
  buffer.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51676 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-08-25 05:11:19 +00:00
parent b4b848e6a0
commit 2f6fdd3aeb
4 changed files with 119 additions and 71 deletions
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40
win32/file.h Normal file
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#ifndef RUBY_WIN32_FILE_H
#define RUBY_WIN32_FILE_H
#define MAX_REPARSE_PATH_LEN 4092
enum {
MINIMUM_REPARSE_BUFFER_PATH_LEN = 4
};
/* License: Ruby's */
typedef struct {
ULONG ReparseTag;
USHORT ReparseDataLength;
USHORT Reserved;
union {
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
ULONG Flags;
WCHAR PathBuffer[4];
} SymbolicLinkReparseBuffer;
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
WCHAR PathBuffer[4];
} MountPointReparseBuffer;
};
} rb_w32_reparse_buffer_t;
#define rb_w32_reparse_buffer_size(n) \
(sizeof(rb_w32_reparse_buffer_t) + \
sizeof(WCHAR)*((n)-MINIMUM_REPARSE_BUFFER_PATH_LEN))
int rb_w32_read_reparse_point(const WCHAR *path, rb_w32_reparse_buffer_t *rp,
size_t bufsize, WCHAR **result, DWORD *len);
#endif /* RUBY_WIN32_FILE_H */