xnu-4903.241.1.tar.gz

[apple/xnu.git] / bsd / sys / filedesc.h

diff --git a/bsd/sys/filedesc.h b/bsd/sys/filedesc.h
index b5b80a6bc6814d8de000decc4c6b2580343701b1..16e33533aee0757efbd01808abec2f200f2eee17 100644 (file)
--- a/bsd/sys/filedesc.h
+++ b/bsd/sys/filedesc.h
@@ -85,10 +85,17 @@
 
 #ifdef BSD_KERNEL_PRIVATE
 
+#include <kern/locks.h>
+
 struct klist;
+struct kqlist;
 
 struct filedesc {
        struct  fileproc **fd_ofiles;   /* file structures for open files */
+       lck_mtx_t fd_kqhashlock;        /* lock for dynamic kqueue hash */
+       u_long  fd_kqhashmask;          /* size of dynamic kqueue hash */
+       struct  kqlist *fd_kqhash;      /* hash table for dynamic kqueues */
+       struct  kqueue *fd_wqkqueue;    /* the workq kqueue */
        char    *fd_ofileflags;         /* per-process open file flags */
        struct  vnode *fd_cdir;         /* current directory */
        struct  vnode *fd_rdir;         /* root directory */
@@ -96,11 +103,12 @@ struct filedesc {
        int     fd_lastfile;            /* high-water mark of fd_ofiles */
        int     fd_freefile;            /* approx. next free file */
        u_short fd_cmask;               /* mask for file creation */
+        int    fd_flags;
        int     fd_knlistsize;          /* size of knlist */
        struct  klist *fd_knlist;       /* list of attached knotes */
        u_long  fd_knhashmask;          /* size of knhash */
        struct  klist *fd_knhash;       /* hash table for attached knotes */
-        int    fd_flags;
+       lck_mtx_t fd_knhashlock;        /* lock for hash table for attached knotes */
 };
 
 /*
@@ -110,6 +118,9 @@ struct filedesc {
                                 /* if we're force unmounted and unable to */
                                 /* take a vnode_ref on fd_rdir during a fork */
 
+#define FD_WORKLOOP    0x02    /* process has created a kqworkloop that */
+                                /* requires manual cleanup on exit */
+
 /*
  * Per-process open flags.
  */
@@ -145,6 +156,16 @@ extern int fdavail(proc_t p, int n);
                        (&(p)->p_fd->fd_ofiles[(fd)])
 #define                fdflags(p, fd)                                  \
                        (&(p)->p_fd->fd_ofileflags[(fd)])
+
+/*
+ * Accesor macros for fd flags
+ */
+#define FDFLAGS_GET(p, fd) (*fdflags(p, fd) & (UF_EXCLOSE|UF_FORKCLOSE))
+#define FDFLAGS_SET(p, fd, bits) \
+          (*fdflags(p, fd) |= ((bits) & (UF_EXCLOSE|UF_FORKCLOSE)))
+#define FDFLAGS_CLR(p, fd, bits) \
+          (*fdflags(p, fd) &= ~((bits) & (UF_EXCLOSE|UF_FORKCLOSE)))
+
 extern int     falloc(proc_t p, struct fileproc **resultfp, int *resultfd, vfs_context_t ctx);
 
 #ifdef __APPLE_API_PRIVATE
@@ -155,7 +176,7 @@ extern int  falloc_withalloc(proc_t p, struct fileproc **resultfp,
 
 extern struct  filedesc *fdcopy(proc_t p, struct vnode *uth_cdir);
 extern void    fdfree(proc_t p);
-extern void    fdexec(proc_t p, short flags);
+extern void    fdexec(proc_t p, short flags, int self_exec);
 #endif /* __APPLE_API_PRIVATE */
 
 #endif /* KERNEL */