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| author | newton <newton@FreeBSD.org> | 1999-08-14 10:52:33 +0000 |
|---|---|---|
| committer | newton <newton@FreeBSD.org> | 1999-08-14 10:52:33 +0000 |
| commit | 5ff2615ae3524707b482556fcc6668d139f2cd67 (patch) | |
| tree | 4e6ba1388fecb004df1e2c3f8b48fe464cd90957 /sys/svr4 | |
| parent | 4437c70523fc9c569766ece2be5286fccb67b886 (diff) | |
| download | FreeBSD-src-5ff2615ae3524707b482556fcc6668d139f2cd67.zip FreeBSD-src-5ff2615ae3524707b482556fcc6668d139f2cd67.tar.gz | |
Avoid possible panic by checking for EFAULT from copyinstr() during
pathname translation.
Submitted by: green
Diffstat (limited to 'sys/svr4')
| -rw-r--r-- | sys/svr4/svr4_util.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/sys/svr4/svr4_util.h b/sys/svr4/svr4_util.h index abd7b0b..a2f28e3 100644 --- a/sys/svr4/svr4_util.h +++ b/sys/svr4/svr4_util.h @@ -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_ */ |
