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Cygwin: convert sun_name_t into class 

Add constructors and new/delete operators to make sure sun_name_t
objects are allocated on the cygheap.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2018-03-01 18:14:23 +01:00
parent aa467e6e33
commit dc3928fc75
2 changed files with 22 additions and 13 deletions
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19
winsup/cygwin/fhandler.h
View File

@ -817,8 +817,9 @@ class fhandler_socket_local: public fhandler_socket_wsock
}
};
struct sun_name_t
class sun_name_t
{
public:
__socklen_t un_len;
union
{
@ -826,6 +827,22 @@ struct sun_name_t
/* Allows 108 bytes sun_path plus trailing NUL */
char _nul[sizeof (struct sockaddr_un) + 1];
};
sun_name_t ()
{
un_len = 0;
un.sun_family = 0;
_nul[sizeof (struct sockaddr_un)] = '\0';
}
sun_name_t (const struct sockaddr *name, __socklen_t namelen)
{
un_len = namelen < (__socklen_t) sizeof un ? namelen : sizeof un;
memcpy (&un, name, un_len);
_nul[sizeof (struct sockaddr_un)] = '\0';
}
void *operator new (size_t) __attribute__ ((nothrow))
{ return cmalloc_abort (HEAP_FHANDLER, sizeof (sun_name_t)); }
void operator delete (void *p) {cfree (p);}
};
class fhandler_socket_unix : public fhandler_socket

16
winsup/cygwin/fhandler_socket_unix.cc
View File

@ -158,9 +158,9 @@ fhandler_socket_unix::fhandler_socket_unix () :
fhandler_socket_unix::~fhandler_socket_unix ()
{
if (sun_path)
cfree (sun_path);
delete sun_path;
if (peer_sun_path)
cfree (peer_sun_path);
delete peer_sun_path;
}
void
@ -168,11 +168,7 @@ fhandler_socket_unix::set_sun_path (struct sockaddr_un *un, socklen_t unlen)
{
if (!un)
sun_path = NULL;
sun_path = (struct sun_name_t *) cmalloc_abort (HEAP_FHANDLER,
sizeof *sun_path);
sun_path->un_len = unlen;
memcpy (&sun_path->un, un, sizeof (*un));
sun_path->_nul[sizeof (struct sockaddr_un)] = '\0';
sun_path = new sun_name_t ((const struct sockaddr *) un, unlen);
}
void
@ -181,11 +177,7 @@ fhandler_socket_unix::set_peer_sun_path (struct sockaddr_un *un,
{
if (!un)
peer_sun_path = NULL;
peer_sun_path = (struct sun_name_t *) cmalloc_abort (HEAP_FHANDLER,
sizeof *peer_sun_path);
peer_sun_path->un_len = unlen;
memcpy (&peer_sun_path->un, un, sizeof (*un));
peer_sun_path->_nul[sizeof (struct sockaddr_un)] = '\0';
peer_sun_path = new sun_name_t ((const struct sockaddr *) un, unlen);
}
void