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Avoid possible panic by checking for EFAULT from copyinstr() during

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pathname translation.

Submitted by:	green
This commit is contained in:
Mark Newton 1999-08-14 10:52:33 +00:00
parent 86cfb28d8d
commit 5462f43fb0
2 changed files with 24 additions and 10 deletions
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17
sys/compat/svr4/svr4_util.h
View File

@ -25,7 +25,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
* $Id: svr4_util.h,v 1.2 1999/07/30 12:45:21 newton Exp $
*/
#ifndef _SVR4_UTIL_H_
@ -71,10 +71,17 @@ extern const char svr4_emul_path[];
int svr4_emul_find __P((struct proc *, caddr_t *, const char *, char *,
char **, int));
#define CHECKALTEXIST(p, sgp, path) \
svr4_emul_find(p, sgp, svr4_emul_path, path, &(path), 0)
#define CHECKALT(p, sgp, path, i) \
do { \
int _error; \
\
_error = svr4_emul_find(p, sgp, svr4_emul_path, path, \
&path, i); \
if (_error == EFAULT) \
return (_error); \
} while (0)
#define CHECKALTCREAT(p, sgp, path) \
svr4_emul_find(p, sgp, svr4_emul_path, path, &(path), 1)
#define CHECKALTEXIST(p, sgp, path) CHECKALT(p, sgp, path, 0)
#define CHECKALTCREAT(p, sgp, path) CHECKALT(p, sgp, path, 1)
#endif /* !_SVR4_UTIL_H_ */

17
sys/svr4/svr4_util.h
View File

@ -25,7 +25,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
* $Id: svr4_util.h,v 1.2 1999/07/30 12:45:21 newton Exp $
*/
#ifndef _SVR4_UTIL_H_
@ -71,10 +71,17 @@ extern const char svr4_emul_path[];
int svr4_emul_find __P((struct proc *, caddr_t *, const char *, char *,
char **, int));
#define CHECKALTEXIST(p, sgp, path) \
svr4_emul_find(p, sgp, svr4_emul_path, path, &(path), 0)
#define CHECKALT(p, sgp, path, i) \
do { \
int _error; \
\
_error = svr4_emul_find(p, sgp, svr4_emul_path, path, \
&path, i); \
if (_error == EFAULT) \
return (_error); \
} while (0)
#define CHECKALTCREAT(p, sgp, path) \
svr4_emul_find(p, sgp, svr4_emul_path, path, &(path), 1)
#define CHECKALTEXIST(p, sgp, path) CHECKALT(p, sgp, path, 0)
#define CHECKALTCREAT(p, sgp, path) CHECKALT(p, sgp, path, 1)
#endif /* !_SVR4_UTIL_H_ */