xnu-2422.90.20.tar.gz

[apple/xnu.git] / bsd / vfs / vfs_syscalls.c

diff --git a/bsd/vfs/vfs_syscalls.c b/bsd/vfs/vfs_syscalls.c
index efd4e324e2cf955d28c68614362d2e336dfe5777..4b9996834ddb0c98aaea56dc7ac0b6a9217c18cf 100644 (file)
--- a/bsd/vfs/vfs_syscalls.c
+++ b/bsd/vfs/vfs_syscalls.c
@@ -6904,7 +6904,7 @@ vnode_readdir64(struct vnode *vp, struct uio *uio, int flags, int *eofflag,
                size_t bufsize;
                void * bufptr;
                uio_t auio;
-               struct direntry entry64;
+               struct direntry *entry64;
                struct dirent *dep;
                int bytesread;
                int error;
@@ -6937,23 +6937,28 @@ vnode_readdir64(struct vnode *vp, struct uio *uio, int flags, int *eofflag,
                dep = (struct dirent *)bufptr;
                bytesread = bufsize - uio_resid(auio);
 
+               MALLOC(entry64, struct direntry *, sizeof(struct direntry),
+                      M_TEMP, M_WAITOK);
                /*
                 * Convert all the entries and copy them out to user's buffer.
                 */
                while (error == 0 && (char *)dep < ((char *)bufptr + bytesread)) {
+                       size_t  enbufsize = DIRENT64_LEN(dep->d_namlen);
+
+                       bzero(entry64, enbufsize);
                        /* Convert a dirent to a dirent64. */
-                       entry64.d_ino = dep->d_ino;
-                       entry64.d_seekoff = 0;
-                       entry64.d_reclen = DIRENT64_LEN(dep->d_namlen);
-                       entry64.d_namlen = dep->d_namlen;
-                       entry64.d_type = dep->d_type;
-                       bcopy(dep->d_name, entry64.d_name, dep->d_namlen + 1);
+                       entry64->d_ino = dep->d_ino;
+                       entry64->d_seekoff = 0;
+                       entry64->d_reclen = enbufsize;
+                       entry64->d_namlen = dep->d_namlen;
+                       entry64->d_type = dep->d_type;
+                       bcopy(dep->d_name, entry64->d_name, dep->d_namlen + 1);
 
                        /* Move to next entry. */
                        dep = (struct dirent *)((char *)dep + dep->d_reclen);
 
                        /* Copy entry64 to user's buffer. */
-                       error = uiomove((caddr_t)&entry64, entry64.d_reclen, uio);
+                       error = uiomove((caddr_t)entry64, entry64->d_reclen, uio);
                }
 
                /* Update the real offset using the offset we got from VNOP_READDIR. */
@@ -6962,6 +6967,7 @@ vnode_readdir64(struct vnode *vp, struct uio *uio, int flags, int *eofflag,
                }
                uio_free(auio);
                FREE(bufptr, M_TEMP);
+               FREE(entry64, M_TEMP);
                return (error);
        }
 }