/*
- * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2014 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <sys/cdefs.h>
#include <sys/lock.h>
#include <sys/file.h>
+#include <sys/filedesc.h>
struct proc;
struct uio;
#define FP_INCREATE 0x0001
#define FP_INCLOSE 0x0002
#define FP_INSELECT 0x0004
-#define FP_INCHRREAD 0x0000 /* disable FP_INCHRREAD <rdar://6986929> */
+#define FP_UNUSED 0x0008 /* unused (was FP_INCHRREAD) */
#define FP_WRITTEN 0x0010
#define FP_CLOSING 0x0020
#define FP_WAITCLOSE 0x0040
#define FP_AIOISSUED 0x0080
#define FP_WAITEVENT 0x0100
+#define FP_SELCONFLICT 0x0200 /* select conflict on an individual fp */
-#define FP_VALID_FLAGS (FP_INCREATE | FP_INCLOSE | FP_INSELECT | FP_INCHRREAD | FP_WRITTEN | FP_WRITTEN | FP_CLOSING | FP_WAITCLOSE | FP_AIOISSUED | FP_WAITEVENT)
+/* squeeze a "type" value into the upper flag bits */
+#define _FP_TYPESHIFT 24
+#define FP_TYPEMASK (0x7 << _FP_TYPESHIFT) /* 8 "types" of fileproc */
+
+#define FILEPROC_TYPE(fp) ((fp)->f_flags & FP_TYPEMASK)
+
+#define FP_ISGUARDED(fp, attribs) \
+ ((FILEPROC_TYPE(fp) == FTYPE_GUARDED) ? fp_isguarded(fp, attribs) : 0)
+
+typedef enum {
+ FTYPE_SIMPLE = 0,
+ FTYPE_GUARDED = (1 << _FP_TYPESHIFT)
+} fileproc_type_t;
+
+#define FP_VALID_FLAGS (FP_INCREATE | FP_INCLOSE | FP_INSELECT |\
+ FP_WRITTEN | FP_CLOSING | FP_WAITCLOSE |\
+ FP_AIOISSUED | FP_WAITEVENT | FP_SELCONFLICT | _FP_TYPEMASK)
#ifndef _KAUTH_CRED_T
#define _KAUTH_CRED_T
struct ucred;
typedef struct ucred *kauth_cred_t;
+struct posix_cred;
+typedef struct posix_cred *posix_cred_t;
#endif /* !_KAUTH_CRED_T */
/* file types */
DTYPE_PSXSEM, /* POSIX Semaphores */
DTYPE_KQUEUE, /* kqueue */
DTYPE_PIPE, /* pipe */
- DTYPE_FSEVENTS /* fsevents */
+ DTYPE_FSEVENTS, /* fsevents */
+ DTYPE_ATALK /* (obsolete) */
} file_type_t;
/* defines for fg_lflags */
#define FG_WINSMSGQ 0x04 /* wait for the fielglob is in msgque */
#define FG_RMMSGQ 0x08 /* the fileglob is being removed from msgqueue */
#define FG_WRMMSGQ 0x10 /* wait for the fileglob to be removed from msgqueue */
+#define FG_PORTMADE 0x20 /* a port was at some point created for this fileglob */
+#define FG_NOSIGPIPE 0x40 /* don't deliver SIGPIPE with EPIPE return */
+#define FG_OFF_LOCKED 0x80 /* Used as a mutex for offset changes (for vnodes) */
+#define FG_OFF_LOCKWANT 0x100 /* Somebody's wating for the lock */
struct fileglob {
- LIST_ENTRY(fileglob) f_list;/* list of active files */
LIST_ENTRY(fileglob) f_msglist;/* list of active files */
int32_t fg_flag; /* see fcntl.h */
- file_type_t fg_type; /* descriptor type */
int32_t fg_count; /* reference count */
int32_t fg_msgcount; /* references from message queue */
+ int32_t fg_lflags; /* file global flags */
kauth_cred_t fg_cred; /* credentials associated with descriptor */
- struct fileops {
+ const struct fileops {
+ file_type_t fo_type; /* descriptor type */
int (*fo_read) (struct fileproc *fp, struct uio *uio,
int flags, vfs_context_t ctx);
int (*fo_write) (struct fileproc *fp, struct uio *uio,
int (*fo_drain) (struct fileproc *fp, vfs_context_t ctx);
} *fg_ops;
off_t fg_offset;
- caddr_t fg_data; /* vnode or socket or SHM or semaphore */
+ void *fg_data; /* vnode or socket or SHM or semaphore */
+ void *fg_vn_data; /* Per fd vnode data, used for directories */
lck_mtx_t fg_lock;
- int32_t fg_lflags; /* file global flags */
- unsigned int fg_lockpc[4];
- unsigned int fg_unlockpc[4];
#if CONFIG_MACF
struct label *fg_label; /* JMM - use the one in the cred? */
#endif
};
#ifdef __APPLE_API_PRIVATE
-LIST_HEAD(filelist, fileglob);
LIST_HEAD(fmsglist, fileglob);
-extern struct filelist filehead; /* head of list of open files */
extern struct fmsglist fmsghead; /* head of list of open files */
extern int maxfiles; /* kernel limit on number of open files */
extern int nfiles; /* actual number of open files */
extern int maxfilesperproc;
+
+#define FILEGLOB_DTYPE(fg) ((const file_type_t)((fg)->fg_ops->fo_type))
#endif /* __APPLE_API_PRIVATE */
int fo_close(struct fileglob *fg, vfs_context_t ctx);
int fo_kqfilter(struct fileproc *fp, struct knote *kn, vfs_context_t ctx);
void fileproc_drain(proc_t, struct fileproc *);
+int fp_tryswap(proc_t, int fd, struct fileproc *nfp);
int fp_drop(struct proc *p, int fd, struct fileproc *fp, int locked);
int fp_drop_written(proc_t p, int fd, struct fileproc *fp);
int fp_drop_event(proc_t p, int fd, struct fileproc *fp);
struct socket;
int fp_getfsock(struct proc *p, int fd, struct fileproc **resultfp, struct socket **results);
int fp_lookup(struct proc *p, int fd, struct fileproc **resultfp, int locked);
+int fp_isguarded(struct fileproc *fp, u_int attribs);
+int fp_guard_exception(proc_t p, int fd, struct fileproc *fp, u_int attribs);
int closef_locked(struct fileproc *fp, struct fileglob *fg, struct proc *p);
+int close_internal_locked(proc_t p, int fd, struct fileproc *fp, int flags);
+struct nameidata;
+struct vnode_attr;
+int open1(vfs_context_t ctx, struct nameidata *ndp, int uflags,
+ struct vnode_attr *vap, fp_allocfn_t fp_zalloc, void *cra,
+ int32_t *retval);
+int kqueue_body(struct proc *p, fp_allocfn_t, void *cra, int32_t *retval);
void fg_insertuipc(struct fileglob * fg);
void fg_removeuipc(struct fileglob * fg);
void unp_gc_wait(void);
void procfdtbl_clearfd(struct proc * p, int fd);
boolean_t filetype_issendable(file_type_t type);
extern int fdgetf_noref(proc_t, int, struct fileproc **);
+extern struct fileproc *fileproc_alloc_init(void *crargs);
+extern void fileproc_free(struct fileproc *fp);
+extern void guarded_fileproc_free(struct fileproc *fp);
+extern void fg_vn_data_free(void *fgvndata);
+extern int nameiat(struct nameidata *ndp, int dirfd);
__END_DECLS
#endif /* __APPLE_API_UNSTABLE */
projects / apple / xnu.git / blobdiff