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Cygwin: add transform_chars_af_unix helper

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This function is going to be used for transposing sun_path of
abstract sockets.  This also adds a transposition of the NUL
character to tfx_chars since NUL-bytes in abstract socket names
are perfectly valid.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2018-03-02 18:11:57 +01:00
parent 488221cf5c
commit 7d260cfac4
2 changed files with 13 additions and 2 deletions
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2
winsup/cygwin/miscfuncs.h
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@@ -96,6 +96,8 @@ transform_chars (PUNICODE_STRING upath, USHORT start_idx)
upath->Buffer + upath->Length / sizeof (WCHAR) - 1); upath->Buffer + upath->Length / sizeof (WCHAR) - 1);
} }
PWCHAR transform_chars_af_unix (PWCHAR, const char *, __socklen_t);
/* Memory checking */ /* Memory checking */
int __reg2 check_invalid_virtual_addr (const void *s, unsigned sz); int __reg2 check_invalid_virtual_addr (const void *s, unsigned sz);

13
winsup/cygwin/strfuncs.cc
View File

@@ -22,7 +22,7 @@ details. */
is affected as well, but we can't transform it as long as we accept Win32 is affected as well, but we can't transform it as long as we accept Win32
paths as input. */ paths as input. */
static const WCHAR tfx_chars[] = { static const WCHAR tfx_chars[] = {
0, 0xf000 | 1, 0xf000 | 2, 0xf000 | 3, 0xf000 | 0, 0xf000 | 1, 0xf000 | 2, 0xf000 | 3,
0xf000 | 4, 0xf000 | 5, 0xf000 | 6, 0xf000 | 7, 0xf000 | 4, 0xf000 | 5, 0xf000 | 6, 0xf000 | 7,
0xf000 | 8, 0xf000 | 9, 0xf000 | 10, 0xf000 | 11, 0xf000 | 8, 0xf000 | 9, 0xf000 | 10, 0xf000 | 11,
0xf000 | 12, 0xf000 | 13, 0xf000 | 14, 0xf000 | 15, 0xf000 | 12, 0xf000 | 13, 0xf000 | 14, 0xf000 | 15,
@@ -61,7 +61,7 @@ static const WCHAR tfx_chars[] = {
converting back space and dot on filesystems only supporting DOS converting back space and dot on filesystems only supporting DOS
filenames. */ filenames. */
static const WCHAR tfx_rev_chars[] = { static const WCHAR tfx_rev_chars[] = {
0, 0xf000 | 1, 0xf000 | 2, 0xf000 | 3, 0xf000 | 0, 0xf000 | 1, 0xf000 | 2, 0xf000 | 3,
0xf000 | 4, 0xf000 | 5, 0xf000 | 6, 0xf000 | 7, 0xf000 | 4, 0xf000 | 5, 0xf000 | 6, 0xf000 | 7,
0xf000 | 8, 0xf000 | 9, 0xf000 | 10, 0xf000 | 11, 0xf000 | 8, 0xf000 | 9, 0xf000 | 10, 0xf000 | 11,
0xf000 | 12, 0xf000 | 13, 0xf000 | 14, 0xf000 | 15, 0xf000 | 12, 0xf000 | 13, 0xf000 | 14, 0xf000 | 15,
@@ -103,6 +103,15 @@ transform_chars (PWCHAR path, PWCHAR path_end)
*path = tfx_chars[*path]; *path = tfx_chars[*path];
} }
PWCHAR
transform_chars_af_unix (PWCHAR out, const char *path, __socklen_t len)
{
len -= sizeof (__sa_family_t);
for (const unsigned char *p = (const unsigned char *) path; len-- > 0; ++p)
*out++ = (*p <= 0x7f) ? tfx_chars[*p] : *p;
return out;
}
/* The SJIS, JIS and eucJP conversion in newlib does not use UTF as /* The SJIS, JIS and eucJP conversion in newlib does not use UTF as
wchar_t character representation. That's unfortunate for us since wchar_t character representation. That's unfortunate for us since
we require UTF for the OS. What we do here is to have our own we require UTF for the OS. What we do here is to have our own