diff options
| author | Matthew Dempsky <matthew@cvs.openbsd.org> | 2012-05-21 16:41:04 +0000 |
|---|---|---|
| committer | Matthew Dempsky <matthew@cvs.openbsd.org> | 2012-05-21 16:41:04 +0000 |
| commit | 3c1fa8e419a5e898b32c4ef37779f8fd20ee0d03 (patch) | |
| tree | 0f65ca68802374f5f70eecd3e784908032342add /sys | |
| parent | 1d6a8efae8419f4d0742c0677fc7181dec6e243a (diff) | |
Cleanup O_CLOEXEC handling and make sure UF_EXCLOSE is set correctly
when opening /dev/fd/* (i.e., UF_EXCLOSE is now set iff O_CLOEXEC is
set, rather than copying UF_EXCLOSE from the file descriptor being
dup'd).
Also, add support for O_CLOEXEC and O_DIRECTORY to fhopen().
ok krw, guenther; feedback from millert; testing and bug finding by krw
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/kern/kern_descrip.c | 5 | ||||
| -rw-r--r-- | sys/kern/vfs_syscalls.c | 14 |
2 files changed, 13 insertions, 6 deletions
diff --git a/sys/kern/kern_descrip.c b/sys/kern/kern_descrip.c index 9aa2f55b225..4e46b056e04 100644 --- a/sys/kern/kern_descrip.c +++ b/sys/kern/kern_descrip.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_descrip.c,v 1.95 2012/05/14 02:41:13 guenther Exp $ */ +/* $OpenBSD: kern_descrip.c,v 1.96 2012/05/21 16:41:03 matthew Exp $ */ /* $NetBSD: kern_descrip.c,v 1.42 1996/03/30 22:24:38 christos Exp $ */ /* @@ -1233,7 +1233,8 @@ dupfdopen(struct filedesc *fdp, int indx, int dfd, int mode) return (EDEADLK); fdp->fd_ofiles[indx] = wfp; - fdp->fd_ofileflags[indx] = fdp->fd_ofileflags[dfd]; + fdp->fd_ofileflags[indx] = (fdp->fd_ofileflags[indx] & UF_EXCLOSE) | + (fdp->fd_ofileflags[dfd] & ~UF_EXCLOSE); wfp->f_count++; fd_used(fdp, indx); return (0); diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c index 6ac0211eb36..adfd1684156 100644 --- a/sys/kern/vfs_syscalls.c +++ b/sys/kern/vfs_syscalls.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vfs_syscalls.c,v 1.183 2012/05/14 02:41:13 guenther Exp $ */ +/* $OpenBSD: vfs_syscalls.c,v 1.184 2012/05/21 16:41:03 matthew Exp $ */ /* $NetBSD: vfs_syscalls.c,v 1.71 1996/04/23 10:29:02 mycroft Exp $ */ /* @@ -859,8 +859,10 @@ doopenat(struct proc *p, int fd, const char *path, int oflags, mode_t mode, if ((error = falloc(p, &fp, &indx)) != 0) goto out; - flags = FFLAGS(oflags); + if (flags & O_CLOEXEC) + fdp->fd_ofileflags[indx] |= UF_EXCLOSE; + cmode = ((mode &~ fdp->fd_cmask) & ALLPERMS) &~ S_ISTXT; NDINITAT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, fd, path, p); p->p_dupfd = -1; /* XXX check for fdopen */ @@ -932,8 +934,6 @@ doopenat(struct proc *p, int fd, const char *path, int oflags, mode_t mode, } } VOP_UNLOCK(vp, 0, p); - if (flags & O_CLOEXEC) - fdp->fd_ofileflags[indx] |= UF_EXCLOSE; *retval = indx; FILE_SET_MATURE(fp, p); out: @@ -1019,6 +1019,8 @@ sys_fhopen(struct proc *p, void *v, register_t *retval) fp = NULL; goto bad; } + if (flags & O_CLOEXEC) + fdp->fd_ofileflags[indx] |= UF_EXCLOSE; if ((error = copyin(SCARG(uap, fhp), &fh, sizeof(fhandle_t))) != 0) goto bad; @@ -1039,6 +1041,10 @@ sys_fhopen(struct proc *p, void *v, register_t *retval) error = EOPNOTSUPP; goto bad; } + if ((flags & O_DIRECTORY) && vp->v_type != VDIR) { + error = ENOTDIR; + goto bad; + } if (flags & FREAD) { if ((error = VOP_ACCESS(vp, VREAD, cred, p)) != 0) goto bad; |