X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/21362eb3e66fd2c787aee132bce100a44d71a99c..fe8ab488e9161c46dd9885d58fc52996dc0249ff:/bsd/sys/file_internal.h diff --git a/bsd/sys/file_internal.h b/bsd/sys/file_internal.h index 814f0dba2..aaf248554 100644 --- a/bsd/sys/file_internal.h +++ b/bsd/sys/file_internal.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2014 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * @@ -74,6 +74,7 @@ #include #include #include +#include struct proc; struct uio; @@ -88,7 +89,7 @@ struct file; * One entry for each open kernel vnode and socket. */ struct fileproc { - int32_t f_flags; + unsigned int f_flags; int32_t f_iocount; struct fileglob * f_fglob; void * f_waddr; @@ -99,98 +100,118 @@ struct fileproc { #define FP_INCREATE 0x0001 #define FP_INCLOSE 0x0002 #define FP_INSELECT 0x0004 -#define FP_INCHRREAD 0x0008 +#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 */ +/* 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 */ -/* defns of close_internal */ -#define CLOSEINT_LOCKED 1 -#define CLOSEINT_WAITONCLOSE 2 -#define CLOSEINT_NOFDRELSE 4 -#define CLOSEINT_NOFDNOREF 8 - /* file types */ typedef enum { - DTYPE_VNODE = 1, /* file */ - DTYPE_SOCKET, /* communications endpoint */ - DTYPE_PSXSHM, /* POSIX Shared memory */ - DTYPE_PSXSEM, /* POSIX Semaphores */ - DTYPE_KQUEUE, /* kqueue */ - DTYPE_PIPE, /* pipe */ - DTYPE_FSEVENTS /* fsevents */ + DTYPE_VNODE = 1, /* file */ + DTYPE_SOCKET, /* communications endpoint */ + DTYPE_PSXSHM, /* POSIX Shared memory */ + DTYPE_PSXSEM, /* POSIX Semaphores */ + DTYPE_KQUEUE, /* kqueue */ + DTYPE_PIPE, /* pipe */ + DTYPE_FSEVENTS, /* fsevents */ + DTYPE_ATALK /* (obsolete) */ } file_type_t; /* defines for fg_lflags */ -#define FG_TERM 0x01 /* the fileglob is terminating .. */ -#define FG_INSMSGQ 0x02 /* insert to msgqueue pending .. */ -#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_TERM 0x01 /* the fileglob is terminating .. */ +#define FG_INSMSGQ 0x02 /* insert to msgqueue pending .. */ +#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 */ - struct ucred *fg_cred; /* credentials associated with descriptor */ - struct fileops { - int (*fo_read) __P((struct fileproc *fp, struct uio *uio, - struct ucred *cred, int flags, - struct proc *p)); - int (*fo_write) __P((struct fileproc *fp, struct uio *uio, - struct ucred *cred, int flags, - struct proc *p)); + int32_t fg_lflags; /* file global flags */ + kauth_cred_t fg_cred; /* credentials associated with descriptor */ + 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 flags, vfs_context_t ctx); #define FOF_OFFSET 0x00000001 /* offset supplied to vn_write */ #define FOF_PCRED 0x00000002 /* cred from proc, not current thread */ - int (*fo_ioctl) __P((struct fileproc *fp, u_long com, - caddr_t data, struct proc *p)); - int (*fo_select) __P((struct fileproc *fp, int which, - void *wql, struct proc *p)); - int (*fo_close) __P((struct fileglob *fg, struct proc *p)); - int (*fo_kqfilter) __P((struct fileproc *fp, struct knote *kn, - struct proc *p)); - int (*fo_drain) (struct fileproc *fp, struct proc *p); + int (*fo_ioctl) (struct fileproc *fp, u_long com, + caddr_t data, vfs_context_t ctx); + int (*fo_select) (struct fileproc *fp, int which, + void *wql, vfs_context_t ctx); + int (*fo_close) (struct fileglob *fg, vfs_context_t ctx); + int (*fo_kqfilter) (struct fileproc *fp, struct knote *kn, + vfs_context_t ctx); + 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 */ __BEGIN_DECLS -int fo_read(struct fileproc *fp, struct uio *uio, - struct ucred *cred, int flags, struct proc *p); -int fo_write(struct fileproc *fp, struct uio *uio, - struct ucred *cred, int flags, struct proc *p); -int fo_ioctl(struct fileproc *fp, u_long com, caddr_t data, - struct proc *p); -int fo_select(struct fileproc *fp, int which, void *wql, - struct proc *p); -int fo_close(struct fileglob *fg, struct proc *p); -int fo_kqfilter(struct fileproc *fp, struct knote *kn, - struct proc *p); +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 flags, + vfs_context_t ctx); +int fo_ioctl(struct fileproc *fp, u_long com, caddr_t data, vfs_context_t ctx); +int fo_select(struct fileproc *fp, int which, void *wql, vfs_context_t ctx); +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 *); -void fp_setflags(proc_t, struct fileproc *, int); -void fp_clearflags(proc_t, struct fileproc *, int); +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); @@ -199,15 +220,43 @@ struct kqueue; int fp_getfkq(struct proc *p, int fd, struct fileproc **resultfp, struct kqueue **resultkq); struct psemnode; int fp_getfpsem(struct proc *p, int fd, struct fileproc **resultfp, struct psemnode **resultpsem); +struct pshmnode; +int fp_getfpshm(struct proc *p, int fd, struct fileproc **resultfp, struct pshmnode **resultpshm); +struct pipe; +int fp_getfpipe(struct proc *p, int fd, struct fileproc **resultfp, struct pipe **resultpipe); +struct atalk; +int fp_getfatalk(struct proc *p, int fd, struct fileproc **resultfp, struct atalk **resultatalk); struct vnode; int fp_getfvp(struct proc *p, int fd, struct fileproc **resultfp, struct vnode **resultvp); +int fp_getfvpandvid(struct proc *p, int fd, struct fileproc **resultfp, struct vnode **resultvp, uint32_t * vidp); 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 close_internal(struct proc *p, int fd, struct fileproc *fp, int flags); +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_reservefd(struct proc * p, int fd); +void procfdtbl_markclosefd(struct proc * p, int fd); +void procfdtbl_releasefd(struct proc * p, int fd, struct fileproc * fp); +void procfdtbl_waitfd(struct proc * p, int fd); +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 */