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errno: Stop using _impure_ptr->_errno completely 

We use errno AKA _REENT->_errno since the last century and only set
_impure_ptr->_errno for backward compat.  Stop that.  Also, remove
the last check for _impure_ptr->_errno in Cygwin code.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2017-03-10 20:21:09 +01:00
parent f2e6553c25
commit 44b1746a41
3 changed files with 5 additions and 6 deletions
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4
winsup/cygwin/cygerrno.h
View File

@ -30,7 +30,7 @@ extern inline int
__set_errno (const char *fn, int ln, int val)
{
debug_printf ("%s:%d setting errno %d", fn, ln, val);
return errno = _impure_ptr->_errno = val;
return errno = val;
}
#define set_errno(val) __set_errno (__PRETTY_FUNCTION__, __LINE__, (val))
@ -45,7 +45,7 @@ class save_errno
save_errno (int what) {saved = get_errno (); set_errno (what); }
void set (int what) {set_errno (what); saved = what;}
void reset () {saved = get_errno ();}
~save_errno () {errno = _impure_ptr->_errno = saved;}
~save_errno () {errno = saved;}
};
extern const char *__sp_fn;

3
winsup/cygwin/environ.cc
View File

@ -454,8 +454,7 @@ posify_maybe (char **here, const char *value, char *outenv)
memcpy (outenv, src, len);
char *newvalue = outenv + len;
if (!conv->toposix (value, newvalue, NT_MAX_PATH - len)
|| _impure_ptr->_errno != EIDRM)
if (!conv->toposix (value, newvalue, NT_MAX_PATH - len) || errno != EIDRM)
conv->add_cache (newvalue, *value != '/' ? value : NULL);
else
{

4
winsup/cygwin/errno.cc
View File

@ -339,7 +339,7 @@ void __reg3
seterrno_from_win_error (const char *file, int line, DWORD code)
{
syscall_printf ("%s:%d windows error %u", file, line, code);
errno = _impure_ptr->_errno = geterrno_from_win_error (code, EACCES);
errno = geterrno_from_win_error (code, EACCES);
}
int __reg2
@ -357,7 +357,7 @@ seterrno_from_nt_status (const char *file, int line, NTSTATUS status)
SetLastError (code);
syscall_printf ("%s:%d status %y -> windows error %u",
file, line, status, code);
errno = _impure_ptr->_errno = geterrno_from_win_error (code, EACCES);
errno = geterrno_from_win_error (code, EACCES);
}
static char *