/*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
#include <sys/systm.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
-#include <sys/vnode.h>
-#include <sys/proc.h>
-#include <sys/file.h>
+#include <sys/vnode_internal.h>
+#include <sys/proc_internal.h>
+#include <sys/kauth.h>
+#include <sys/file_internal.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
+#include <sys/mman.h>
#include <sys/syslog.h>
#include <sys/unistd.h>
#include <sys/resourcevar.h>
-
-#include <sys/mount.h>
-
+#include <sys/aio_kern.h>
+#include <sys/ev.h>
+#include <kern/lock.h>
+
+#include <bsm/audit_kernel.h>
+
+#include <sys/mount_internal.h>
+#include <sys/kdebug.h>
+#include <sys/sysproto.h>
+#include <sys/pipe.h>
+#include <kern/kern_types.h>
+#include <kern/kalloc.h>
+#include <libkern/OSAtomic.h>
+
+struct psemnode;
+struct pshmnode;
+
+int fdopen(dev_t dev, int mode, int type, struct proc *p);
+int ogetdtablesize(struct proc *p, void *uap, register_t *retval);
+int finishdup(struct proc * p, struct filedesc *fdp, int old, int new, register_t *retval);
+
+int closef(struct fileglob *fg, struct proc *p);
+int falloc_locked(struct proc *p, struct fileproc **resultfp, int *resultfd, int locked);
+void fddrop(struct proc *p, int fd);
+int fdgetf_noref(struct proc *p, int fd, struct fileproc **resultfp);
+void fg_drop(struct fileproc * fp);
+void fg_free(struct fileglob *fg);
+void fg_ref(struct fileproc * fp);
+int fp_getfpshm(struct proc *p, int fd, struct fileproc **resultfp, struct pshmnode **resultpshm);
+
+static int closef_finish(struct fileproc *fp, struct fileglob *fg, struct proc *p);
+
+extern void file_lock_init(void);
+extern int is_suser(void);
+extern int kqueue_stat(struct fileproc *fp, struct stat *st, struct proc *p);
+extern int soo_stat(struct socket *so, struct stat *ub);
+extern int vn_path_package_check(vnode_t vp, char *path, int pathlen, int *component);
+
+extern kauth_scope_t kauth_scope_fileop;
+
+#define f_flag f_fglob->fg_flag
+#define f_type f_fglob->fg_type
+#define f_msgcount f_fglob->fg_msgcount
+#define f_cred f_fglob->fg_cred
+#define f_ops f_fglob->fg_ops
+#define f_offset f_fglob->fg_offset
+#define f_data f_fglob->fg_data
/*
* Descriptor management.
*/
struct filelist filehead; /* head of list of open files */
+struct fmsglist fmsghead; /* head of list of open files */
+struct fmsglist fmsg_ithead; /* head of list of open files */
int nfiles; /* actual number of open files */
-static int frele_internal(struct file *);
+
+lck_grp_attr_t * file_lck_grp_attr;
+lck_grp_t * file_lck_grp;
+lck_attr_t * file_lck_attr;
+
+lck_mtx_t * uipc_lock;
+lck_mtx_t * file_iterate_lcok;
+lck_mtx_t * file_flist_lock;
+
+
+void
+file_lock_init(void)
+{
+
+ /* allocate file lock group attribute and group */
+ file_lck_grp_attr= lck_grp_attr_alloc_init();
+ lck_grp_attr_setstat(file_lck_grp_attr);
+
+ file_lck_grp = lck_grp_alloc_init("file", file_lck_grp_attr);
+
+ /* Allocate file lock attribute */
+ file_lck_attr = lck_attr_alloc_init();
+ //lck_attr_setdebug(file_lck_attr);
+
+ uipc_lock = lck_mtx_alloc_init(file_lck_grp, file_lck_attr);
+ file_iterate_lcok = lck_mtx_alloc_init(file_lck_grp, file_lck_attr);
+ file_flist_lock = lck_mtx_alloc_init(file_lck_grp, file_lck_attr);
+
+
+
+}
+
+
+void
+proc_fdlock(struct proc *p)
+{
+ lck_mtx_lock(&p->p_fdmlock);
+}
+
+void
+proc_fdunlock(struct proc *p)
+{
+ lck_mtx_unlock(&p->p_fdmlock);
+}
/*
* System calls on descriptors.
*/
-/* ARGSUSED */
+
int
-getdtablesize(p, uap, retval)
- struct proc *p;
- void *uap;
- register_t *retval;
+getdtablesize(struct proc *p, __unused struct getdtablesize_args *uap, register_t *retval)
{
+ proc_fdlock(p);
*retval = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles);
+ proc_fdunlock(p);
+
return (0);
}
-/* ARGSUSED */
int
-ogetdtablesize(p, uap, retval)
- struct proc *p;
- void *uap;
- register_t *retval;
+ogetdtablesize(struct proc *p, __unused void *uap, register_t *retval)
{
+ proc_fdlock(p);
*retval = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, NOFILE);
+ proc_fdunlock(p);
+
return (0);
}
-static __inline__
-void _fdrelse(fdp, fd)
- register struct filedesc *fdp;
- register int fd;
+static __inline__ void
+_fdrelse(struct filedesc *fdp, int fd)
{
if (fd < fdp->fd_freefile)
fdp->fd_freefile = fd;
#endif
fdp->fd_ofiles[fd] = NULL;
fdp->fd_ofileflags[fd] = 0;
+
while ((fd = fdp->fd_lastfile) > 0 &&
fdp->fd_ofiles[fd] == NULL &&
!(fdp->fd_ofileflags[fd] & UF_RESERVED))
/*
* Duplicate a file descriptor.
*/
-struct dup_args {
- u_int fd;
-};
/* ARGSUSED */
int
dup(p, uap, retval)
register struct filedesc *fdp = p->p_fd;
register int old = uap->fd;
int new, error;
+ struct fileproc *fp;
- if ((u_int)old >= fdp->fd_nfiles ||
- fdp->fd_ofiles[old] == NULL ||
- (fdp->fd_ofileflags[old] & UF_RESERVED))
- return (EBADF);
- if (error = fdalloc(p, 0, &new))
+ proc_fdlock(p);
+ if ( (error = fp_lookup(p, old, &fp, 1)) ) {
+ proc_fdunlock(p);
+ return(error);
+ }
+ if ( (error = fdalloc(p, 0, &new)) ) {
+ fp_drop(p, old, fp, 1);
+ proc_fdunlock(p);
return (error);
- return (finishdup(fdp, old, new, retval));
+ }
+ error = finishdup(p, fdp, old, new, retval);
+ fp_drop(p, old, fp, 1);
+ proc_fdunlock(p);
+
+ return (error);
}
/*
* Duplicate a file descriptor to a particular value.
*/
-struct dup2_args {
- u_int from;
- u_int to;
-};
/* ARGSUSED */
int
dup2(p, uap, retval)
register struct filedesc *fdp = p->p_fd;
register int old = uap->from, new = uap->to;
int i, error;
+ struct fileproc *fp;
- if ((u_int)old >= fdp->fd_nfiles ||
- fdp->fd_ofiles[old] == NULL ||
- (fdp->fd_ofileflags[old] & UF_RESERVED) ||
- (u_int)new >= p->p_rlimit[RLIMIT_NOFILE].rlim_cur ||
- (u_int)new >= maxfiles)
+ proc_fdlock(p);
+
+ if ( (error = fp_lookup(p, old, &fp, 1)) ) {
+ proc_fdunlock(p);
+ return(error);
+ }
+ if (new < 0 ||
+ new >= p->p_rlimit[RLIMIT_NOFILE].rlim_cur ||
+ new >= maxfiles) {
+ fp_drop(p, old, fp, 1);
+ proc_fdunlock(p);
return (EBADF);
+ }
if (old == new) {
+ fp_drop(p, old, fp, 1);
*retval = new;
+ proc_fdunlock(p);
return (0);
}
- if ((u_int)new >= fdp->fd_nfiles) {
- if (error = fdalloc(p, new, &i))
+ if (new < 0 || new >= fdp->fd_nfiles) {
+ if ( (error = fdalloc(p, new, &i)) ) {
+ fp_drop(p, old, fp, 1);
+ proc_fdunlock(p);
return (error);
+ }
if (new != i) {
_fdrelse(fdp, i);
goto closeit;
}
} else {
- struct file **fpp;
+ struct fileproc **fpp;
char flags;
closeit:
- if ((flags = fdp->fd_ofileflags[new]) & UF_RESERVED)
+ flags = fdp->fd_ofileflags[new];
+ if ((flags & (UF_RESERVED | UF_CLOSING)) == UF_RESERVED) {
+ fp_drop(p, old, fp, 1);
+ proc_fdunlock(p);
return (EBADF);
- fdp->fd_ofileflags[new] = (flags & ~UF_MAPPED) | UF_RESERVED;
+ }
+
/*
* dup2() must succeed even if the close has an error.
*/
if (*(fpp = &fdp->fd_ofiles[new])) {
- struct file *fp = *fpp;
+ struct fileproc *nfp = *fpp;
+ close_internal(p, new, nfp, (CLOSEINT_LOCKED | CLOSEINT_WAITONCLOSE | CLOSEINT_NOFDRELSE | CLOSEINT_NOFDNOREF));
*fpp = NULL;
- (void) closef(fp, p);
}
}
- return (finishdup(fdp, old, new, retval));
+ error = finishdup(p, fdp, old, new, retval);
+ fp_drop(p, old, fp, 1);
+ proc_fdunlock(p);
+
+ return(error);
}
/*
* The file control system call.
*/
-struct fcntl_args {
- int fd;
- int cmd;
- int arg;
-};
-/* ARGSUSED */
int
fcntl(p, uap, retval)
struct proc *p;
- register struct fcntl_args *uap;
+ struct fcntl_args *uap;
register_t *retval;
{
int fd = uap->fd;
- register struct filedesc *fdp = p->p_fd;
- register struct file *fp;
- register char *pop;
- struct vnode *vp, *devvp;
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc *fp;
+ char *pop;
+ struct vnode *vp;
int i, tmp, error, error2, flg = F_POSIX;
struct flock fl;
- fstore_t alloc_struct; /* structure for allocate command */
- u_int32_t alloc_flags = 0;
- off_t offset; /* used for F_SETSIZE */
+ struct vfs_context context;
+ off_t offset;
int newmin;
- struct radvisory ra_struct;
- fbootstraptransfer_t fbt_struct; /* for F_READBOOTSTRAP and F_WRITEBOOTSTRAP */
- struct log2phys l2p_struct; /* structure for allocate command */
- daddr_t lbn, bn;
+ daddr64_t lbn, bn;
int devBlockSize = 0;
+ unsigned int fflag;
+ user_addr_t argp;
+
+ AUDIT_ARG(fd, uap->fd);
+ AUDIT_ARG(cmd, uap->cmd);
+
+ proc_fdlock(p);
+ if ( (error = fp_lookup(p, fd, &fp, 1)) ) {
+ proc_fdunlock(p);
+ return(error);
+ }
+ context.vc_proc = p;
+ context.vc_ucred = fp->f_cred;
+ if (proc_is64bit(p)) {
+ argp = uap->arg;
+ }
+ else {
+ /* since the arg parameter is defined as a long but may be either
+ * a long or a pointer we must take care to handle sign extension
+ * issues. Our sys call munger will sign extend a long when we are
+ * called from a 32-bit process. Since we can never have an address
+ * greater than 32-bits from a 32-bit process we lop off the top
+ * 32-bits to avoid getting the wrong address
+ */
+ argp = CAST_USER_ADDR_T(uap->arg);
+ }
- if ((u_int)fd >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[fd]) == NULL ||
- (fdp->fd_ofileflags[fd] & UF_RESERVED))
- return (EBADF);
pop = &fdp->fd_ofileflags[fd];
+
switch (uap->cmd) {
case F_DUPFD:
- newmin = (long)uap->arg;
+ newmin = CAST_DOWN(int, uap->arg);
if ((u_int)newmin >= p->p_rlimit[RLIMIT_NOFILE].rlim_cur ||
- (u_int)newmin >= maxfiles)
- return (EINVAL);
- if (error = fdalloc(p, newmin, &i))
- return (error);
- return (finishdup(fdp, fd, i, retval));
+ newmin >= maxfiles) {
+ error = EINVAL;
+ goto out;
+ }
+ if ( (error = fdalloc(p, newmin, &i)) )
+ goto out;
+ error = finishdup(p, fdp, fd, i, retval);
+ goto out;
case F_GETFD:
*retval = (*pop & UF_EXCLOSE)? 1 : 0;
- return (0);
+ error = 0;
+ goto out;
case F_SETFD:
*pop = (*pop &~ UF_EXCLOSE) |
- ((long)(uap->arg) & 1)? UF_EXCLOSE : 0;
- return (0);
+ (uap->arg & 1)? UF_EXCLOSE : 0;
+ error = 0;
+ goto out;
case F_GETFL:
*retval = OFLAGS(fp->f_flag);
- return (0);
+ error = 0;
+ goto out;
case F_SETFL:
fp->f_flag &= ~FCNTLFLAGS;
- fp->f_flag |= FFLAGS((long)uap->arg) & FCNTLFLAGS;
+ tmp = CAST_DOWN(int, uap->arg);
+ fp->f_flag |= FFLAGS(tmp) & FCNTLFLAGS;
tmp = fp->f_flag & FNONBLOCK;
error = fo_ioctl(fp, FIONBIO, (caddr_t)&tmp, p);
if (error)
- return (error);
+ goto out;
tmp = fp->f_flag & FASYNC;
error = fo_ioctl(fp, FIOASYNC, (caddr_t)&tmp, p);
if (!error)
- return (0);
+ goto out;
fp->f_flag &= ~FNONBLOCK;
tmp = 0;
(void)fo_ioctl(fp, FIONBIO, (caddr_t)&tmp, p);
- return (error);
+ goto out;
case F_GETOWN:
if (fp->f_type == DTYPE_SOCKET) {
*retval = ((struct socket *)fp->f_data)->so_pgid;
- return (0);
+ error = 0;
+ goto out;
}
error = fo_ioctl(fp, (int)TIOCGPGRP, (caddr_t)retval, p);
*retval = -*retval;
- return (error);
+ goto out;
case F_SETOWN:
+ tmp = CAST_DOWN(pid_t, uap->arg);
if (fp->f_type == DTYPE_SOCKET) {
- ((struct socket *)fp->f_data)->so_pgid =
- (long)uap->arg;
- return (0);
+ ((struct socket *)fp->f_data)->so_pgid = tmp;
+ error =0;
+ goto out;
+ }
+ if (fp->f_type == DTYPE_PIPE) {
+ error = fo_ioctl(fp, (int)TIOCSPGRP, (caddr_t)&tmp, p);
+ goto out;
}
- if ((long)uap->arg <= 0) {
- uap->arg = (int)(-(long)(uap->arg));
+
+ if (tmp <= 0) {
+ tmp = -tmp;
} else {
- struct proc *p1 = pfind((long)uap->arg);
- if (p1 == 0)
- return (ESRCH);
- uap->arg = (int)p1->p_pgrp->pg_id;
+ struct proc *p1 = pfind(tmp);
+ if (p1 == 0) {
+ error = ESRCH;
+ goto out;
+ }
+ tmp = (int)p1->p_pgrp->pg_id;
}
- return (fo_ioctl(fp, (int)TIOCSPGRP, (caddr_t)&uap->arg, p));
+ error = fo_ioctl(fp, (int)TIOCSPGRP, (caddr_t)&tmp, p);
+ goto out;
case F_SETLKW:
flg |= F_WAIT;
/* Fall into F_SETLK */
case F_SETLK:
- if (fp->f_type != DTYPE_VNODE)
- return (EBADF);
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
vp = (struct vnode *)fp->f_data;
+
+ fflag = fp->f_flag;
+ offset = fp->f_offset;
+ proc_fdunlock(p);
+
/* Copy in the lock structure */
- error = copyin((caddr_t)uap->arg, (caddr_t)&fl,
- sizeof (fl));
- if (error)
- return (error);
+ error = copyin(argp, (caddr_t)&fl, sizeof (fl));
+ if (error) {
+ goto outdrop;
+ }
+ if ( (error = vnode_getwithref(vp)) ) {
+ goto outdrop;
+ }
if (fl.l_whence == SEEK_CUR)
- fl.l_start += fp->f_offset;
+ fl.l_start += offset;
+
switch (fl.l_type) {
case F_RDLCK:
- if ((fp->f_flag & FREAD) == 0)
- return (EBADF);
- p->p_flag |= P_ADVLOCK;
- return (VOP_ADVLOCK(vp, (caddr_t)p, F_SETLK, &fl, flg));
+ if ((fflag & FREAD) == 0) {
+ (void)vnode_put(vp);
+ error = EBADF;
+ goto outdrop;
+ }
+ OSBitOrAtomic(P_LADVLOCK, &p->p_ladvflag);
+ error = VNOP_ADVLOCK(vp, (caddr_t)p, F_SETLK, &fl, flg, &context);
+ (void)vnode_put(vp);
+ goto outdrop;
case F_WRLCK:
- if ((fp->f_flag & FWRITE) == 0)
- return (EBADF);
- p->p_flag |= P_ADVLOCK;
- return (VOP_ADVLOCK(vp, (caddr_t)p, F_SETLK, &fl, flg));
+ if ((fflag & FWRITE) == 0) {
+ (void)vnode_put(vp);
+ error = EBADF;
+ goto outdrop;
+ }
+ OSBitOrAtomic(P_LADVLOCK, &p->p_ladvflag);
+ error = VNOP_ADVLOCK(vp, (caddr_t)p, F_SETLK, &fl, flg, &context);
+ (void)vnode_put(vp);
+ goto outdrop;
case F_UNLCK:
- return (VOP_ADVLOCK(vp, (caddr_t)p, F_UNLCK, &fl,
- F_POSIX));
+ error = VNOP_ADVLOCK(vp, (caddr_t)p, F_UNLCK, &fl,
+ F_POSIX, &context);
+ (void)vnode_put(vp);
+ goto outdrop;
default:
- return (EINVAL);
+ (void)vnode_put(vp);
+ error = EINVAL;
+ goto outdrop;
}
case F_GETLK:
- if (fp->f_type != DTYPE_VNODE)
- return (EBADF);
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
vp = (struct vnode *)fp->f_data;
+
+ offset = fp->f_offset;
+ proc_fdunlock(p);
+
/* Copy in the lock structure */
- error = copyin((caddr_t)uap->arg, (caddr_t)&fl,
- sizeof (fl));
+ error = copyin(argp, (caddr_t)&fl, sizeof (fl));
if (error)
- return (error);
- if (fl.l_whence == SEEK_CUR)
- fl.l_start += fp->f_offset;
- if (error = VOP_ADVLOCK(vp, (caddr_t)p, F_GETLK, &fl, F_POSIX))
- return (error);
- return (copyout((caddr_t)&fl, (caddr_t)uap->arg,
- sizeof (fl)));
+ goto outdrop;
- case F_PREALLOCATE:
- if (fp->f_type != DTYPE_VNODE)
- return (EBADF);
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ if (fl.l_whence == SEEK_CUR)
+ fl.l_start += offset;
+
+ error = VNOP_ADVLOCK(vp, (caddr_t)p, F_GETLK, &fl, F_POSIX, &context);
+
+ (void)vnode_put(vp);
+
+ if (error == 0)
+ error = copyout((caddr_t)&fl, argp, sizeof (fl));
+ }
+ goto outdrop;
+
+ case F_PREALLOCATE: {
+ fstore_t alloc_struct; /* structure for allocate command */
+ u_int32_t alloc_flags = 0;
+
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
+
+ vp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
/* make sure that we have write permission */
- if ((fp->f_flag & FWRITE) == 0)
- return (EBADF);
+ if ((fp->f_flag & FWRITE) == 0) {
+ error = EBADF;
+ goto outdrop;
+ }
- error = copyin((caddr_t)uap->arg, (caddr_t)&alloc_struct,
- sizeof (alloc_struct));
+ error = copyin(argp, (caddr_t)&alloc_struct, sizeof (alloc_struct));
if (error)
- return (error);
+ goto outdrop;
/* now set the space allocated to 0 */
alloc_struct.fst_bytesalloc = 0;
switch (alloc_struct.fst_posmode) {
case F_PEOFPOSMODE:
- if (alloc_struct.fst_offset != 0)
- return (EINVAL);
+ if (alloc_struct.fst_offset != 0) {
+ error = EINVAL;
+ goto outdrop;
+ }
alloc_flags |= ALLOCATEFROMPEOF;
break;
case F_VOLPOSMODE:
- if (alloc_struct.fst_offset <= 0)
- return (EINVAL);
+ if (alloc_struct.fst_offset <= 0) {
+ error = EINVAL;
+ goto outdrop;
+ }
alloc_flags |= ALLOCATEFROMVOL;
break;
- default:
- return(EINVAL);
+ default: {
+ error = EINVAL;
+ goto outdrop;
+ }
}
-
- vp = (struct vnode *)fp->f_data;
-
- /* lock the vnode and call allocate to get the space */
- error = vn_lock(vp, LK_EXCLUSIVE|LK_RETRY, p);
- if (error)
- return (error);
- error = VOP_ALLOCATE(vp,alloc_struct.fst_length,alloc_flags,
- &alloc_struct.fst_bytesalloc, alloc_struct.fst_offset,
- fp->f_cred, p);
- VOP_UNLOCK(vp, 0, p);
-
- if (error2 = copyout((caddr_t)&alloc_struct,
- (caddr_t)uap->arg,
- sizeof (alloc_struct))) {
- if (error)
- return(error);
- else
- return(error2);
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ /*
+ * call allocate to get the space
+ */
+ error = VNOP_ALLOCATE(vp,alloc_struct.fst_length,alloc_flags,
+ &alloc_struct.fst_bytesalloc, alloc_struct.fst_offset,
+ &context);
+ (void)vnode_put(vp);
+
+ error2 = copyout((caddr_t)&alloc_struct, argp, sizeof (alloc_struct));
+
+ if (error == 0)
+ error = error2;
}
- return(error);
+ goto outdrop;
+ }
case F_SETSIZE:
- if (fp->f_type != DTYPE_VNODE)
- return (EBADF);
-
- error = copyin((caddr_t)uap->arg, (caddr_t)&offset,
- sizeof (off_t));
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
+ proc_fdunlock(p);
+
+ error = copyin(argp, (caddr_t)&offset, sizeof (off_t));
if (error)
- return (error);
+ goto outdrop;
/*
* Make sure that we are root. Growing a file
* root would have access anyway so we'll allow it
*/
- if (!is_suser())
- return (EACCES);
-
+ if (!is_suser()) {
+ error = EACCES;
+ goto outdrop;
+ }
vp = (struct vnode *)fp->f_data;
- /* lock the vnode and call allocate to get the space */
- error = vn_lock(vp, LK_EXCLUSIVE|LK_RETRY, p);
- if (error)
- return (error);
- error = VOP_TRUNCATE(vp,offset,IO_NOZEROFILL,fp->f_cred,p);
- VOP_UNLOCK(vp,0,p);
- return(error);
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ /*
+ * set the file size
+ */
+ error = vnode_setsize(vp, offset, IO_NOZEROFILL, &context);
+
+ (void)vnode_put(vp);
+ }
+ goto outdrop;
case F_RDAHEAD:
- if (fp->f_type != DTYPE_VNODE)
- return (EBADF);
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
vp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
- simple_lock(&vp->v_interlock);
- if (uap->arg)
- vp->v_flag &= ~VRAOFF;
- else
- vp->v_flag |= VRAOFF;
- simple_unlock(&vp->v_interlock);
- return (0);
+ if ( (error = vnode_getwithref(vp)) == 0) {
+ if (uap->arg)
+ vnode_clearnoreadahead(vp);
+ else
+ vnode_setnoreadahead(vp);
+
+ (void)vnode_put(vp);
+ }
+ goto outdrop;
case F_NOCACHE:
- if (fp->f_type != DTYPE_VNODE)
- return (EBADF);
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
vp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
- simple_lock(&vp->v_interlock);
- if (uap->arg)
- vp->v_flag |= VNOCACHE_DATA;
- else
- vp->v_flag &= ~VNOCACHE_DATA;
- simple_unlock(&vp->v_interlock);
- return (0);
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ if (uap->arg)
+ vnode_setnocache(vp);
+ else
+ vnode_clearnocache(vp);
- case F_RDADVISE:
- if (fp->f_type != DTYPE_VNODE)
- return (EBADF);
+ (void)vnode_put(vp);
+ }
+ goto outdrop;
+
+ case F_RDADVISE: {
+ struct radvisory ra_struct;
+
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
vp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
+
+ if ( (error = copyin(argp, (caddr_t)&ra_struct, sizeof (ra_struct))) )
+ goto outdrop;
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ error = VNOP_IOCTL(vp, F_RDADVISE, (caddr_t)&ra_struct, 0, &context);
- if (error = copyin((caddr_t)uap->arg,
- (caddr_t)&ra_struct, sizeof (ra_struct)))
- return(error);
- return (VOP_IOCTL(vp, 1, (caddr_t)&ra_struct, 0, fp->f_cred, p));
+ (void)vnode_put(vp);
+ }
+ goto outdrop;
+ }
case F_READBOOTSTRAP:
- case F_WRITEBOOTSTRAP:
- if (fp->f_type != DTYPE_VNODE)
- return (EBADF);
+ case F_WRITEBOOTSTRAP: {
+ fbootstraptransfer_t fbt_struct;
+ user_fbootstraptransfer_t user_fbt_struct;
+ int sizeof_struct;
+ caddr_t boot_structp;
+
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
+ vp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
- error = copyin((caddr_t)uap->arg, (caddr_t)&fbt_struct,
- sizeof (fbt_struct));
+ if (IS_64BIT_PROCESS(p)) {
+ sizeof_struct = sizeof(user_fbt_struct);
+ boot_structp = (caddr_t) &user_fbt_struct;
+ }
+ else {
+ sizeof_struct = sizeof(fbt_struct);
+ boot_structp = (caddr_t) &fbt_struct;
+ }
+ error = copyin(argp, boot_structp, sizeof_struct);
if (error)
- return (error);
-
+ goto outdrop;
+ if ( (error = vnode_getwithref(vp)) ) {
+ goto outdrop;
+ }
if (uap->cmd == F_WRITEBOOTSTRAP) {
- /*
- * Make sure that we are root. Updating the
- * bootstrap on a disk could be a security hole
- */
- if (!is_suser())
- return (EACCES);
+ /*
+ * Make sure that we are root. Updating the
+ * bootstrap on a disk could be a security hole
+ */
+ if (!is_suser()) {
+ (void)vnode_put(vp);
+ error = EACCES;
+ goto outdrop;
+ }
}
-
- vp = (struct vnode *)fp->f_data;
- if (vp->v_tag != VT_HFS) /* XXX */
+ if (strcmp(vnode_mount(vp)->mnt_vfsstat.f_fstypename, "hfs") != 0) {
error = EINVAL;
- else {
- /* lock the vnode and call VOP_IOCTL to handle the I/O */
- error = vn_lock(vp, LK_EXCLUSIVE|LK_RETRY, p);
- if (error)
- return (error);
- error = VOP_IOCTL(vp, (uap->cmd == F_WRITEBOOTSTRAP) ? 3 : 2,
- (caddr_t)&fbt_struct, 0, fp->f_cred, p);
- VOP_UNLOCK(vp,0,p);
+ } else {
+ /*
+ * call vnop_ioctl to handle the I/O
+ */
+ error = VNOP_IOCTL(vp, uap->cmd, boot_structp, 0, &context);
}
- return(error);
+ (void)vnode_put(vp);
+ goto outdrop;
+ }
+ case F_LOG2PHYS: {
+ struct log2phys l2p_struct; /* structure for allocate command */
- case F_LOG2PHYS:
- if (fp->f_type != DTYPE_VNODE)
- return (EBADF);
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
vp = (struct vnode *)fp->f_data;
- error = vn_lock(vp, LK_EXCLUSIVE|LK_RETRY, p);
- if (error)
- return (error);
- if (VOP_OFFTOBLK(vp, fp->f_offset, &lbn))
- panic("fcntl LOG2PHYS OFFTOBLK");
- if (VOP_BLKTOOFF(vp, lbn, &offset))
- panic("fcntl LOG2PHYS BLKTOOFF1");
- error = VOP_BMAP(vp, lbn, &devvp, &bn, 0);
- VOP_DEVBLOCKSIZE(devvp, &devBlockSize);
- VOP_UNLOCK(vp, 0, p);
+ proc_fdunlock(p);
+ if ( (error = vnode_getwithref(vp)) ) {
+ goto outdrop;
+ }
+ error = VNOP_OFFTOBLK(vp, fp->f_offset, &lbn);
+ if (error) {
+ (void)vnode_put(vp);
+ goto outdrop;
+ }
+ error = VNOP_BLKTOOFF(vp, lbn, &offset);
+ if (error) {
+ (void)vnode_put(vp);
+ goto outdrop;
+ }
+ devBlockSize = vfs_devblocksize(vnode_mount(vp));
+
+ error = VNOP_BLOCKMAP(vp, offset, devBlockSize, &bn, NULL, NULL, 0, &context);
+
+ (void)vnode_put(vp);
+
if (!error) {
l2p_struct.l2p_flags = 0; /* for now */
l2p_struct.l2p_contigbytes = 0; /* for now */
l2p_struct.l2p_devoffset = bn * devBlockSize;
l2p_struct.l2p_devoffset += fp->f_offset - offset;
- error = copyout((caddr_t)&l2p_struct,
- (caddr_t)uap->arg,
- sizeof (l2p_struct));
+ error = copyout((caddr_t)&l2p_struct, argp, sizeof (l2p_struct));
}
- return (error);
+ goto outdrop;
+ }
+ case F_GETPATH: {
+ char *pathbufp;
+ int pathlen;
+
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
+ vp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
+
+ pathlen = MAXPATHLEN;
+ MALLOC(pathbufp, char *, pathlen, M_TEMP, M_WAITOK);
+ if (pathbufp == NULL) {
+ error = ENOMEM;
+ goto outdrop;
+ }
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ error = vn_getpath(vp, pathbufp, &pathlen);
+ (void)vnode_put(vp);
+
+ if (error == 0)
+ error = copyout((caddr_t)pathbufp, argp, pathlen);
+ }
+ FREE(pathbufp, M_TEMP);
+ goto outdrop;
+ }
+
+ case F_PATHPKG_CHECK: {
+ char *pathbufp;
+ size_t pathlen;
+
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
+ vp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
+
+ pathlen = MAXPATHLEN;
+ pathbufp = kalloc(MAXPATHLEN);
+
+ if ( (error = copyinstr(argp, pathbufp, MAXPATHLEN, &pathlen)) == 0 ) {
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ error = vn_path_package_check(vp, pathbufp, pathlen, retval);
+
+ (void)vnode_put(vp);
+ }
+ }
+ kfree(pathbufp, MAXPATHLEN);
+ goto outdrop;
+ }
+
+ case F_CHKCLEAN: // used by regression tests to see if all dirty pages got cleaned by fsync()
+ case F_FULLFSYNC: // fsync + flush the journal + DKIOCSYNCHRONIZECACHE
+ case F_FREEZE_FS: // freeze all other fs operations for the fs of this fd
+ case F_THAW_FS: { // thaw all frozen fs operations for the fs of this fd
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
+ vp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
+
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ error = VNOP_IOCTL(vp, uap->cmd, (caddr_t)NULL, 0, &context);
+ (void)vnode_put(vp);
+ }
+ break;
+ }
+
default:
- return (EINVAL);
+ if (uap->cmd < FCNTL_FS_SPECIFIC_BASE) {
+ error = EINVAL;
+ goto out;
+ }
+
+ // if it's a fs-specific fcntl() then just pass it through
+
+ if (fp->f_type != DTYPE_VNODE) {
+ error = EBADF;
+ goto out;
+ }
+ vp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
+
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ error = VNOP_IOCTL(vp, uap->cmd, CAST_DOWN(caddr_t, argp), 0, &context);
+
+ (void)vnode_put(vp);
+ }
+ break;
+
}
- /* NOTREACHED */
+
+outdrop:
+ AUDIT_ARG(vnpath_withref, vp, ARG_VNODE1);
+ fp_drop(p, fd, fp, 0);
+ return(error);
+out:
+ fp_drop(p, fd, fp, 1);
+ proc_fdunlock(p);
+ return(error);
}
/*
* Common code for dup, dup2, and fcntl(F_DUPFD).
*/
int
-finishdup(fdp, old, new, retval)
- register struct filedesc *fdp;
- register int old, new;
- register_t *retval;
+finishdup(struct proc * p, struct filedesc *fdp, int old, int new, register_t *retval)
{
- register struct file *fp;
+ struct fileproc *nfp;
+ struct fileproc *ofp;
- if ((fp = fdp->fd_ofiles[old]) == NULL ||
+ if ((ofp = fdp->fd_ofiles[old]) == NULL ||
(fdp->fd_ofileflags[old] & UF_RESERVED)) {
_fdrelse(fdp, new);
return (EBADF);
}
- fdp->fd_ofiles[new] = fp;
+ fg_ref(ofp);
+ proc_fdunlock(p);
+
+ MALLOC_ZONE(nfp, struct fileproc *, sizeof(struct fileproc), M_FILEPROC, M_WAITOK);
+ bzero(nfp, sizeof(struct fileproc));
+
+ proc_fdlock(p);
+ nfp->f_flags = ofp->f_flags;
+ nfp->f_fglob = ofp->f_fglob;
+ nfp->f_iocount = 0;
+
+ fdp->fd_ofiles[new] = nfp;
fdp->fd_ofileflags[new] = fdp->fd_ofileflags[old] &~ UF_EXCLOSE;
- (void)fref(fp);
if (new > fdp->fd_lastfile)
fdp->fd_lastfile = new;
*retval = new;
return (0);
}
-/*
- * Close a file descriptor.
- */
-struct close_args {
- int fd;
-};
-/* ARGSUSED */
+
int
-close(p, uap, retval)
- struct proc *p;
- struct close_args *uap;
- register_t *retval;
+close(struct proc *p, struct close_args *uap, __unused register_t *retval)
{
+ struct fileproc *fp;
int fd = uap->fd;
- register struct filedesc *fdp = p->p_fd;
- register struct file *fp;
+ int error =0;
- if ((u_int)fd >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[fd]) == NULL ||
- (fdp->fd_ofileflags[fd] & UF_RESERVED))
- return (EBADF);
- _fdrelse(fdp, fd);
- return (closef(fp, p));
+ AUDIT_SYSCLOSE(p, fd);
+
+ proc_fdlock(p);
+
+ if ( (error = fp_lookup(p,fd,&fp, 1)) ) {
+ proc_fdunlock(p);
+ return(error);
+ }
+
+ error = close_internal(p, fd, fp, CLOSEINT_LOCKED | CLOSEINT_WAITONCLOSE);
+
+ proc_fdunlock(p);
+
+ return(error);
}
+
/*
- * Return status information about a file descriptor.
+ * Close a file descriptor.
*/
-struct fstat_args {
- int fd;
- struct stat *sb;
-};
-/* ARGSUSED */
int
-fstat(p, uap, retval)
- struct proc *p;
- register struct fstat_args *uap;
- register_t *retval;
+close_internal(struct proc *p, int fd, struct fileproc *fp, int flags)
{
- int fd = uap->fd;
- register struct filedesc *fdp = p->p_fd;
- register struct file *fp;
- struct stat ub;
- int error;
-
- if ((u_int)fd >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[fd]) == NULL ||
- (fdp->fd_ofileflags[fd] & UF_RESERVED))
- return (EBADF);
- switch (fp->f_type) {
-
- case DTYPE_VNODE:
- error = vn_stat((struct vnode *)fp->f_data, &ub, p);
- break;
+ struct filedesc *fdp = p->p_fd;
+ int error =0;
+ int locked = flags & CLOSEINT_LOCKED;
+ int waitonclose = flags & CLOSEINT_WAITONCLOSE;
+ int norelse = flags & CLOSEINT_NOFDRELSE;
+ int nofdref = flags & CLOSEINT_NOFDNOREF;
+ int slpstate = PRIBIO;
+
+ if (!locked)
+ proc_fdlock(p);
+
+ /* Keep people from using the filedesc while we are closing it */
+ fdp->fd_ofileflags[fd] |= UF_RESERVED;
+
+ fdp->fd_ofileflags[fd] |= UF_CLOSING;
+
+
+ if ((waitonclose && ((fp->f_flags & FP_CLOSING) == FP_CLOSING))) {
+ if (nofdref == 0)
+ fp_drop(p, fd, fp, 1);
+ fp->f_flags |= FP_WAITCLOSE;
+ if (!locked)
+ slpstate |= PDROP;
+ msleep(&fp->f_flags, &p->p_fdmlock, slpstate, "close wait",0) ;
+ return(EBADF);
+ }
- case DTYPE_SOCKET:
- error = soo_stat((struct socket *)fp->f_data, &ub);
- break;
+ fp->f_flags |= FP_CLOSING;
+ if (nofdref)
+ fp->f_iocount++;
+
+ if ( (fp->f_flags & FP_AIOISSUED) || kauth_authorize_fileop_has_listeners() ) {
+
+ proc_fdunlock(p);
+
+ if ( (fp->f_type == DTYPE_VNODE) && kauth_authorize_fileop_has_listeners() ) {
+ /*
+ * call out to allow 3rd party notification of close.
+ * Ignore result of kauth_authorize_fileop call.
+ */
+ if (vnode_getwithref((vnode_t)fp->f_data) == 0) {
+ u_int fileop_flags = 0;
+ if ((fp->f_flags & FP_WRITTEN) != 0)
+ fileop_flags |= KAUTH_FILEOP_CLOSE_MODIFIED;
+ kauth_authorize_fileop(fp->f_fglob->fg_cred, KAUTH_FILEOP_CLOSE,
+ (uintptr_t)fp->f_data, (uintptr_t)fileop_flags);
+ vnode_put((vnode_t)fp->f_data);
+ }
+ }
+ if (fp->f_flags & FP_AIOISSUED)
+ /*
+ * cancel all async IO requests that can be cancelled.
+ */
+ _aio_close( p, fd );
- case DTYPE_PSXSHM:
- error = pshm_stat((void *)fp->f_data, &ub);
- break;
- default:
- panic("fstat");
- /*NOTREACHED*/
+ proc_fdlock(p);
}
- if (error == 0)
- error = copyout((caddr_t)&ub, (caddr_t)uap->sb,
- sizeof (ub));
- return (error);
+
+ if (fd < fdp->fd_knlistsize)
+ knote_fdclose(p, fd);
+
+ if (fp->f_flags & FP_WAITEVENT)
+ (void)waitevent_close(p, fp);
+
+ if ((fp->f_flags & FP_INCHRREAD) == 0)
+ fileproc_drain(p, fp);
+ if (norelse == 0)
+ _fdrelse(fdp, fd);
+ error = closef_locked(fp, fp->f_fglob, p);
+ if ((fp->f_flags & FP_WAITCLOSE) == FP_WAITCLOSE)
+ wakeup(&fp->f_flags);
+ fp->f_flags &= ~(FP_WAITCLOSE | FP_CLOSING);
+
+ if (!locked)
+ proc_fdunlock(p);
+
+ FREE_ZONE(fp, sizeof *fp, M_FILEPROC);
+ return(error);
}
-#if COMPAT_43
/*
* Return status information about a file descriptor.
+ *
+ * XXX switch on node type is bogus; need a stat in struct fileops instead.
*/
-struct ofstat_args {
- int fd;
- struct ostat *sb;
-};
-/* ARGSUSED */
-ofstat(p, uap, retval)
- struct proc *p;
- register struct ofstat_args *uap;
- register_t *retval;
+static int
+fstat1(struct proc *p, int fd, user_addr_t ub, user_addr_t xsecurity, user_addr_t xsecurity_size)
{
- int fd = uap->fd;
- register struct filedesc *fdp = p->p_fd;
- register struct file *fp;
- struct stat ub;
- struct ostat oub;
- int error;
+ struct fileproc *fp;
+ struct stat sb;
+ struct user_stat user_sb;
+ int error, my_size;
+ int funnel_state;
+ short type;
+ caddr_t data;
+ kauth_filesec_t fsec;
+ ssize_t xsecurity_bufsize;
+ int entrycount;
+ struct vfs_context context;
+
+
+ AUDIT_ARG(fd, fd);
+
+ if ((error = fp_lookup(p, fd, &fp, 0)) != 0)
+ return(error);
+ type = fp->f_type;
+ data = fp->f_data;
+ fsec = KAUTH_FILESEC_NONE;
- if ((u_int)fd >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[fd]) == NULL ||
- (fdp->fd_ofileflags[fd] & UF_RESERVED))
- return (EBADF);
- switch (fp->f_type) {
+ switch (type) {
case DTYPE_VNODE:
- error = vn_stat((struct vnode *)fp->f_data, &ub, p);
+ context.vc_proc = current_proc();
+ context.vc_ucred = kauth_cred_get();
+ if ((error = vnode_getwithref((vnode_t)data)) == 0) {
+ /*
+ * If the caller has the file open, and is not requesting extended security,
+ * we are going to let them get the basic stat information.
+ */
+ if (xsecurity == USER_ADDR_NULL) {
+ error = vn_stat_noauth((vnode_t)data, &sb, NULL, &context);
+ } else {
+ error = vn_stat((vnode_t)data, &sb, &fsec, &context);
+ }
+
+ AUDIT_ARG(vnpath, (struct vnode *)data, ARG_VNODE1);
+ (void)vnode_put((vnode_t)data);
+ }
break;
case DTYPE_SOCKET:
- error = soo_stat((struct socket *)fp->f_data, &ub);
+ error = soo_stat((struct socket *)data, &sb);
+ break;
+
+ case DTYPE_PIPE:
+ error = pipe_stat((void *)data, &sb);
+ break;
+
+ case DTYPE_PSXSHM:
+ error = pshm_stat((void *)data, &sb);
+ break;
+
+ case DTYPE_KQUEUE:
+ funnel_state = thread_funnel_set(kernel_flock, TRUE);
+ error = kqueue_stat(fp, &sb, p);
+ thread_funnel_set(kernel_flock, funnel_state);
break;
default:
- panic("ofstat");
- /*NOTREACHED*/
+ error = EBADF;
+ goto out;
+ }
+ /* Zap spare fields */
+ sb.st_lspare = 0;
+ sb.st_qspare[0] = 0LL;
+ sb.st_qspare[1] = 0LL;
+ if (error == 0) {
+ caddr_t sbp;
+ if (IS_64BIT_PROCESS(current_proc())) {
+ munge_stat(&sb, &user_sb);
+ my_size = sizeof(user_sb);
+ sbp = (caddr_t)&user_sb;
+ }
+ else {
+ my_size = sizeof(sb);
+ sbp = (caddr_t)&sb;
+ }
+ error = copyout(sbp, ub, my_size);
}
- cvtstat(&ub, &oub);
- if (error == 0)
- error = copyout((caddr_t)&oub, (caddr_t)uap->sb,
- sizeof (oub));
+
+ /* caller wants extended security information? */
+ if (xsecurity != USER_ADDR_NULL) {
+
+ /* did we get any? */
+ if (fsec == KAUTH_FILESEC_NONE) {
+ if (susize(xsecurity_size, 0) != 0) {
+ error = EFAULT;
+ goto out;
+ }
+ } else {
+ /* find the user buffer size */
+ xsecurity_bufsize = fusize(xsecurity_size);
+
+ /* copy out the actual data size */
+ if (susize(xsecurity_size, KAUTH_FILESEC_COPYSIZE(fsec)) != 0) {
+ error = EFAULT;
+ goto out;
+ }
+
+ /* if the caller supplied enough room, copy out to it */
+ if (xsecurity_bufsize >= KAUTH_FILESEC_COPYSIZE(fsec))
+ error = copyout(fsec, xsecurity, KAUTH_FILESEC_COPYSIZE(fsec));
+ }
+ }
+out:
+ fp_drop(p, fd, fp, 0);
+ if (fsec != NULL)
+ kauth_filesec_free(fsec);
return (error);
}
-#endif /* COMPAT_43 */
+
+int
+fstat_extended(struct proc *p, struct fstat_extended_args *uap, __unused register_t *retval)
+{
+ return(fstat1(p, uap->fd, uap->ub, uap->xsecurity, uap->xsecurity_size));
+}
+
+int
+fstat(struct proc *p, register struct fstat_args *uap, __unused register_t *retval)
+{
+ return(fstat1(p, uap->fd, uap->ub, 0, 0));
+}
/*
* Return pathconf information about a file descriptor.
*/
-struct fpathconf_args {
- int fd;
- int name;
-};
-/* ARGSUSED */
+int
fpathconf(p, uap, retval)
struct proc *p;
register struct fpathconf_args *uap;
register_t *retval;
{
int fd = uap->fd;
- struct filedesc *fdp = p->p_fd;
- struct file *fp;
+ struct fileproc *fp;
struct vnode *vp;
+ struct vfs_context context;
+ int error = 0;
+ short type;
+ caddr_t data;
- if ((u_int)fd >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[fd]) == NULL ||
- (fdp->fd_ofileflags[fd] & UF_RESERVED))
- return (EBADF);
- switch (fp->f_type) {
+
+ AUDIT_ARG(fd, uap->fd);
+ if ( (error = fp_lookup(p, fd, &fp, 0)) )
+ return(error);
+ type = fp->f_type;
+ data = fp->f_data;
+
+ switch (type) {
case DTYPE_SOCKET:
- if (uap->name != _PC_PIPE_BUF)
- return (EINVAL);
+ if (uap->name != _PC_PIPE_BUF) {
+ error = EINVAL;
+ goto out;
+ }
*retval = PIPE_BUF;
- return (0);
+ error = 0;
+ goto out;
+
+ case DTYPE_PIPE:
+ *retval = PIPE_BUF;
+ error = 0;
+ goto out;
case DTYPE_VNODE:
- vp = (struct vnode *)fp->f_data;
- return (VOP_PATHCONF(vp, uap->name, retval));
+ vp = (struct vnode *)data;
+
+ if ( (error = vnode_getwithref(vp)) == 0) {
+ AUDIT_ARG(vnpath, vp, ARG_VNODE1);
+
+ context.vc_proc = p;
+ context.vc_ucred = kauth_cred_get();
+
+ error = vn_pathconf(vp, uap->name, retval, &context);
+
+ (void)vnode_put(vp);
+ }
+ goto out;
+
+ case DTYPE_PSXSHM:
+ case DTYPE_KQUEUE:
+ error = EINVAL;
+ goto out;
default:
- panic("fpathconf");
+ panic("fpathconf (unrecognized - %d)", type);
}
/*NOTREACHED*/
+out:
+ fp_drop(p, fd, fp, 0);
+ return(error);
}
/*
{
register struct filedesc *fdp = p->p_fd;
register int i;
- int lim, last, nfiles, oldnfiles;
- struct file **newofiles, **ofiles;
+ int lim, last, numfiles, oldnfiles;
+ struct fileproc **newofiles, **ofiles;
char *newofileflags, *ofileflags;
/*
if (fdp->fd_nfiles >= lim)
return (EMFILE);
if (fdp->fd_nfiles < NDEXTENT)
- nfiles = NDEXTENT;
+ numfiles = NDEXTENT;
else
- nfiles = 2 * fdp->fd_nfiles;
+ numfiles = 2 * fdp->fd_nfiles;
/* Enforce lim */
- if (nfiles > lim)
- nfiles = lim;
- MALLOC_ZONE(newofiles, struct file **,
- nfiles * OFILESIZE, M_OFILETABL, M_WAITOK);
- if (fdp->fd_nfiles >= nfiles) {
- FREE_ZONE(newofiles, nfiles * OFILESIZE, M_OFILETABL);
+ if (numfiles > lim)
+ numfiles = lim;
+ proc_fdunlock(p);
+ MALLOC_ZONE(newofiles, struct fileproc **,
+ numfiles * OFILESIZE, M_OFILETABL, M_WAITOK);
+ proc_fdlock(p);
+ if (newofiles == NULL) {
+ return (ENOMEM);
+ }
+ if (fdp->fd_nfiles >= numfiles) {
+ FREE_ZONE(newofiles, numfiles * OFILESIZE, M_OFILETABL);
continue;
}
- newofileflags = (char *) &newofiles[nfiles];
+ newofileflags = (char *) &newofiles[numfiles];
/*
* Copy the existing ofile and ofileflags arrays
* and zero the new portion of each array.
(void) memcpy(newofiles, fdp->fd_ofiles,
oldnfiles * sizeof *fdp->fd_ofiles);
(void) memset(&newofiles[oldnfiles], 0,
- (nfiles - oldnfiles) * sizeof *fdp->fd_ofiles);
+ (numfiles - oldnfiles) * sizeof *fdp->fd_ofiles);
(void) memcpy(newofileflags, fdp->fd_ofileflags,
oldnfiles * sizeof *fdp->fd_ofileflags);
(void) memset(&newofileflags[oldnfiles], 0,
- (nfiles - oldnfiles) *
+ (numfiles - oldnfiles) *
sizeof *fdp->fd_ofileflags);
ofiles = fdp->fd_ofiles;
fdp->fd_ofiles = newofiles;
fdp->fd_ofileflags = newofileflags;
- fdp->fd_nfiles = nfiles;
+ fdp->fd_nfiles = numfiles;
FREE_ZONE(ofiles, oldnfiles * OFILESIZE, M_OFILETABL);
fdexpand++;
}
}
-/*
- * Check to see whether n user file descriptors
- * are available to the process p.
- */
+/*
+ * Check to see whether n user file descriptors
+ * are available to the process p.
+ */
+int
+fdavail(p, n)
+ struct proc *p;
+ int n;
+{
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc **fpp;
+ char *flags;
+ int i, lim;
+
+ lim = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles);
+ if ((i = lim - fdp->fd_nfiles) > 0 && (n -= i) <= 0)
+ return (1);
+ fpp = &fdp->fd_ofiles[fdp->fd_freefile];
+ flags = &fdp->fd_ofileflags[fdp->fd_freefile];
+ for (i = fdp->fd_nfiles - fdp->fd_freefile; --i >= 0; fpp++, flags++)
+ if (*fpp == NULL && !(*flags & UF_RESERVED) && --n <= 0)
+ return (1);
+ return (0);
+}
+
+void
+fdrelse(p, fd)
+ struct proc *p;
+ int fd;
+{
+ _fdrelse(p->p_fd, fd);
+}
+
+void
+fddrop(p, fd)
+ struct proc *p;
+ int fd;
+{
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc *fp;
+
+ if (fd < fdp->fd_freefile)
+ fdp->fd_freefile = fd;
+#if DIAGNOSTIC
+ if (fd > fdp->fd_lastfile)
+ panic("fdrelse: fd_lastfile inconsistent");
+#endif
+ fp = fdp->fd_ofiles[fd];
+ fdp->fd_ofiles[fd] = NULL;
+ fdp->fd_ofileflags[fd] = 0;
+
+ while ((fd = fdp->fd_lastfile) > 0 &&
+ fdp->fd_ofiles[fd] == NULL &&
+ !(fdp->fd_ofileflags[fd] & UF_RESERVED))
+ fdp->fd_lastfile--;
+ FREE_ZONE(fp, sizeof *fp, M_FILEPROC);
+}
+
+
+int
+fdgetf_noref(p, fd, resultfp)
+ struct proc *p;
+ int fd;
+ struct fileproc **resultfp;
+{
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc *fp;
+
+ if (fd < 0 || fd >= fdp->fd_nfiles ||
+ (fp = fdp->fd_ofiles[fd]) == NULL ||
+ (fdp->fd_ofileflags[fd] & UF_RESERVED)) {
+ return (EBADF);
+ }
+ if (resultfp)
+ *resultfp = fp;
+ return (0);
+}
+
+
+/* should be called only when proc_fdlock is held */
+void
+fp_setflags(proc_t p, struct fileproc * fp, int flags)
+{
+ proc_fdlock(p);
+ fp->f_flags |= flags;
+ proc_fdunlock(p);
+}
+
+void
+fp_clearflags(proc_t p, struct fileproc * fp, int flags)
+{
+
+ proc_fdlock(p);
+ if (fp)
+ fp->f_flags &= ~flags;
+ proc_fdunlock(p);
+}
+
+int
+fp_getfvp(p, fd, resultfp, resultvp)
+ struct proc *p;
+ int fd;
+ struct fileproc **resultfp;
+ struct vnode **resultvp;
+{
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc *fp;
+
+ proc_fdlock(p);
+ if (fd < 0 || fd >= fdp->fd_nfiles ||
+ (fp = fdp->fd_ofiles[fd]) == NULL ||
+ (fdp->fd_ofileflags[fd] & UF_RESERVED)) {
+ proc_fdunlock(p);
+ return (EBADF);
+ }
+ if (fp->f_type != DTYPE_VNODE) {
+ proc_fdunlock(p);
+ return(ENOTSUP);
+ }
+ fp->f_iocount++;
+
+ if (resultfp)
+ *resultfp = fp;
+ if (resultvp)
+ *resultvp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
+
+ return (0);
+}
+
+
+/*
+ * Returns: EBADF The file descriptor is invalid
+ * EOPNOTSUPP The file descriptor is not a socket
+ * 0 Success
+ *
+ * Notes: EOPNOTSUPP should probably be ENOTSOCK; this function is only
+ * ever called from accept1().
+ */
+int
+fp_getfsock(p, fd, resultfp, results)
+ struct proc *p;
+ int fd;
+ struct fileproc **resultfp;
+ struct socket **results;
+{
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc *fp;
+
+ proc_fdlock(p);
+ if (fd < 0 || fd >= fdp->fd_nfiles ||
+ (fp = fdp->fd_ofiles[fd]) == NULL ||
+ (fdp->fd_ofileflags[fd] & UF_RESERVED)) {
+ proc_fdunlock(p);
+ return (EBADF);
+ }
+ if (fp->f_type != DTYPE_SOCKET) {
+ proc_fdunlock(p);
+ return(EOPNOTSUPP);
+ }
+ fp->f_iocount++;
+
+ if (resultfp)
+ *resultfp = fp;
+ if (results)
+ *results = (struct socket *)fp->f_data;
+ proc_fdunlock(p);
+
+ return (0);
+}
+
+
+int
+fp_getfkq(p, fd, resultfp, resultkq)
+ struct proc *p;
+ int fd;
+ struct fileproc **resultfp;
+ struct kqueue **resultkq;
+{
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc *fp;
+
+ proc_fdlock(p);
+ if ( fd < 0 || fd >= fdp->fd_nfiles ||
+ (fp = fdp->fd_ofiles[fd]) == NULL ||
+ (fdp->fd_ofileflags[fd] & UF_RESERVED)) {
+ proc_fdunlock(p);
+ return (EBADF);
+ }
+ if (fp->f_type != DTYPE_KQUEUE) {
+ proc_fdunlock(p);
+ return(EBADF);
+ }
+ fp->f_iocount++;
+
+ if (resultfp)
+ *resultfp = fp;
+ if (resultkq)
+ *resultkq = (struct kqueue *)fp->f_data;
+ proc_fdunlock(p);
+
+ return (0);
+}
+
+int
+fp_getfpshm(p, fd, resultfp, resultpshm)
+ struct proc *p;
+ int fd;
+ struct fileproc **resultfp;
+ struct pshmnode **resultpshm;
+{
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc *fp;
+
+ proc_fdlock(p);
+ if (fd < 0 || fd >= fdp->fd_nfiles ||
+ (fp = fdp->fd_ofiles[fd]) == NULL ||
+ (fdp->fd_ofileflags[fd] & UF_RESERVED)) {
+ proc_fdunlock(p);
+ return (EBADF);
+ }
+ if (fp->f_type != DTYPE_PSXSHM) {
+
+ proc_fdunlock(p);
+ return(EBADF);
+ }
+ fp->f_iocount++;
+
+ if (resultfp)
+ *resultfp = fp;
+ if (resultpshm)
+ *resultpshm = (struct pshmnode *)fp->f_data;
+ proc_fdunlock(p);
+
+ return (0);
+}
+
+
+int
+fp_getfpsem(p, fd, resultfp, resultpsem)
+ struct proc *p;
+ int fd;
+ struct fileproc **resultfp;
+ struct psemnode **resultpsem;
+{
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc *fp;
+
+ proc_fdlock(p);
+ if (fd < 0 || fd >= fdp->fd_nfiles ||
+ (fp = fdp->fd_ofiles[fd]) == NULL ||
+ (fdp->fd_ofileflags[fd] & UF_RESERVED)) {
+ proc_fdunlock(p);
+ return (EBADF);
+ }
+ if (fp->f_type != DTYPE_PSXSEM) {
+ proc_fdunlock(p);
+ return(EBADF);
+ }
+ fp->f_iocount++;
+
+ if (resultfp)
+ *resultfp = fp;
+ if (resultpsem)
+ *resultpsem = (struct psemnode *)fp->f_data;
+ proc_fdunlock(p);
+
+ return (0);
+}
+int
+fp_lookup(p, fd, resultfp, locked)
+ struct proc *p;
+ int fd;
+ struct fileproc **resultfp;
+ int locked;
+{
+ struct filedesc *fdp = p->p_fd;
+ struct fileproc *fp;
+
+ if (!locked)
+ proc_fdlock(p);
+ if (fd < 0 || fd >= fdp->fd_nfiles ||
+ (fp = fdp->fd_ofiles[fd]) == NULL ||
+ (fdp->fd_ofileflags[fd] & UF_RESERVED)) {
+ if (!locked)
+ proc_fdunlock(p);
+ return (EBADF);
+ }
+ fp->f_iocount++;
+
+ if (resultfp)
+ *resultfp = fp;
+ if (!locked)
+ proc_fdunlock(p);
+
+ return (0);
+}
+
+int
+fp_drop_written(proc_t p, int fd, struct fileproc *fp)
+{
+ int error;
+
+ proc_fdlock(p);
+
+ fp->f_flags |= FP_WRITTEN;
+
+ error = fp_drop(p, fd, fp, 1);
+
+ proc_fdunlock(p);
+
+ return (error);
+}
+
+
+int
+fp_drop_event(proc_t p, int fd, struct fileproc *fp)
+{
+ int error;
+
+ proc_fdlock(p);
+
+ fp->f_flags |= FP_WAITEVENT;
+
+ error = fp_drop(p, fd, fp, 1);
+
+ proc_fdunlock(p);
+
+ return (error);
+}
+
int
-fdavail(p, n)
+fp_drop(p, fd, fp, locked)
struct proc *p;
- register int n;
+ int fd;
+ struct fileproc *fp;
+ int locked;
{
- register struct filedesc *fdp = p->p_fd;
- register struct file **fpp;
- register char *flags;
- register int i, lim;
+ struct filedesc *fdp = p->p_fd;
- lim = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles);
- if ((i = lim - fdp->fd_nfiles) > 0 && (n -= i) <= 0)
- return (1);
- fpp = &fdp->fd_ofiles[fdp->fd_freefile];
- flags = &fdp->fd_ofileflags[fdp->fd_freefile];
- for (i = fdp->fd_nfiles - fdp->fd_freefile; --i >= 0; fpp++, flags++)
- if (*fpp == NULL && !(*flags & UF_RESERVED) && --n <= 0)
- return (1);
+ if (!locked)
+ proc_fdlock(p);
+ if ((fp == FILEPROC_NULL) && (fd < 0 || fd >= fdp->fd_nfiles ||
+ (fp = fdp->fd_ofiles[fd]) == NULL ||
+ ((fdp->fd_ofileflags[fd] & UF_RESERVED) &&
+ !(fdp->fd_ofileflags[fd] & UF_CLOSING)))) {
+ if (!locked)
+ proc_fdunlock(p);
+ return (EBADF);
+ }
+ fp->f_iocount--;
+
+ if (p->p_fpdrainwait && fp->f_iocount == 0) {
+ p->p_fpdrainwait = 0;
+ wakeup(&p->p_fpdrainwait);
+ }
+ if (!locked)
+ proc_fdunlock(p);
+
return (0);
}
-void
-fdrelse(p, fd)
- struct proc *p;
- int fd;
+int
+file_vnode(int fd, struct vnode **vpp)
{
- _fdrelse(p->p_fd, fd);
+ struct proc * p = current_proc();
+ struct fileproc *fp;
+ int error;
+
+ proc_fdlock(p);
+ if ( (error = fp_lookup(p, fd, &fp, 1)) ) {
+ proc_fdunlock(p);
+ return(error);
+ }
+ if (fp->f_type != DTYPE_VNODE) {
+ fp_drop(p, fd, fp,1);
+ proc_fdunlock(p);
+ return(EINVAL);
+ }
+ *vpp = (struct vnode *)fp->f_data;
+ proc_fdunlock(p);
+
+ return(0);
}
+
int
-fdgetf(p, fd, resultfp)
- register struct proc *p;
- register int fd;
- struct file **resultfp;
+file_socket(int fd, struct socket **sp)
{
- register struct filedesc *fdp = p->p_fd;
- struct file *fp;
+ struct proc * p = current_proc();
+ struct fileproc *fp;
+ int error;
+
+ proc_fdlock(p);
+ if ( (error = fp_lookup(p, fd, &fp, 1)) ) {
+ proc_fdunlock(p);
+ return(error);
+ }
+ if (fp->f_type != DTYPE_SOCKET) {
+ fp_drop(p, fd, fp,1);
+ proc_fdunlock(p);
+ return(ENOTSOCK);
+ }
+ *sp = (struct socket *)fp->f_data;
+ proc_fdunlock(p);
- if ((u_int)fd >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[fd]) == NULL ||
- (fdp->fd_ofileflags[fd] & UF_RESERVED))
+ return(0);
+}
+
+int
+file_flags(int fd, int * flags)
+{
+
+ struct proc * p = current_proc();
+ struct fileproc *fp;
+ int error;
+
+ proc_fdlock(p);
+ if ( (error = fp_lookup(p, fd, &fp, 1)) ) {
+ proc_fdunlock(p);
+ return(error);
+ }
+ *flags = (int)fp->f_flag;
+ fp_drop(p, fd, fp,1);
+ proc_fdunlock(p);
+
+ return(0);
+}
+
+
+int
+file_drop(int fd)
+{
+ struct fileproc *fp;
+ struct proc *p = current_proc();
+
+ proc_fdlock(p);
+ if (fd < 0 || fd >= p->p_fd->fd_nfiles ||
+ (fp = p->p_fd->fd_ofiles[fd]) == NULL ||
+ ((p->p_fd->fd_ofileflags[fd] & UF_RESERVED) &&
+ !(p->p_fd->fd_ofileflags[fd] & UF_CLOSING))) {
+ proc_fdunlock(p);
return (EBADF);
+ }
+ fp->f_iocount --;
+
+ if (p->p_fpdrainwait && fp->f_iocount == 0) {
+ p->p_fpdrainwait = 0;
+ wakeup(&p->p_fpdrainwait);
+ }
+ proc_fdunlock(p);
+ return(0);
+
- if (resultfp)
- *resultfp = fp;
- return (0);
}
+int
+falloc(p, resultfp, resultfd )
+ struct proc *p;
+ struct fileproc **resultfp;
+ int *resultfd;
+{
+ int error;
+
+ proc_fdlock(p);
+ error = falloc_locked(p, resultfp, resultfd, 1);
+ proc_fdunlock(p);
+
+ return(error);
+}
/*
* Create a new open file structure and allocate
* a file decriptor for the process that refers to it.
*/
int
-falloc(p, resultfp, resultfd)
- register struct proc *p;
- struct file **resultfp;
+falloc_locked(p, resultfp, resultfd, locked)
+ struct proc *p;
+ struct fileproc **resultfp;
int *resultfd;
+ int locked;
{
- register struct file *fp, *fq;
- int error, i;
-
- if (error = fdalloc(p, 0, &i))
+ struct fileproc *fp, *fq;
+ struct fileglob *fg;
+ int error, nfd;
+
+ if (!locked)
+ proc_fdlock(p);
+ if ( (error = fdalloc(p, 0, &nfd)) ) {
+ if (!locked)
+ proc_fdunlock(p);
return (error);
+ }
if (nfiles >= maxfiles) {
+ if (!locked)
+ proc_fdunlock(p);
tablefull("file");
return (ENFILE);
}
* of open files at that point, otherwise put it at the front of
* the list of open files.
*/
+ proc_fdunlock(p);
+
+ MALLOC_ZONE(fp, struct fileproc *, sizeof(struct fileproc), M_FILEPROC, M_WAITOK);
+ MALLOC_ZONE(fg, struct fileglob *, sizeof(struct fileglob), M_FILEGLOB, M_WAITOK);
+ bzero(fp, sizeof(struct fileproc));
+ bzero(fg, sizeof(struct fileglob));
+ lck_mtx_init(&fg->fg_lock, file_lck_grp, file_lck_attr);
+
+ fp->f_iocount = 1;
+ fg->fg_count = 1;
+ fp->f_fglob = fg;
+
+ proc_fdlock(p);
+
+ fp->f_cred = kauth_cred_proc_ref(p);
+
+ lck_mtx_lock(file_flist_lock);
+
nfiles++;
- MALLOC_ZONE(fp, struct file *, sizeof(struct file), M_FILE, M_WAITOK);
- bzero(fp, sizeof(struct file));
- if (fq = p->p_fd->fd_ofiles[0]) {
- LIST_INSERT_AFTER(fq, fp, f_list);
+
+ if ( (fq = p->p_fd->fd_ofiles[0]) ) {
+ LIST_INSERT_AFTER(fq->f_fglob, fg, f_list);
} else {
- LIST_INSERT_HEAD(&filehead, fp, f_list);
+ LIST_INSERT_HEAD(&filehead, fg, f_list);
}
- p->p_fd->fd_ofiles[i] = fp;
- fp->f_count = 1;
- fp->f_cred = p->p_ucred;
- crhold(fp->f_cred);
+ lck_mtx_unlock(file_flist_lock);
+
+ p->p_fd->fd_ofiles[nfd] = fp;
+
+ if (!locked)
+ proc_fdunlock(p);
+
if (resultfp)
*resultfp = fp;
if (resultfd)
- *resultfd = i;
+ *resultfd = nfd;
+
return (0);
}
* Free a file structure.
*/
void
-ffree(fp)
- register struct file *fp;
+fg_free(fg)
+ struct fileglob *fg;
{
- register struct file *fq;
- struct ucred *cred;
+ kauth_cred_t cred;
+
+ lck_mtx_lock(file_flist_lock);
+ LIST_REMOVE(fg, f_list);
+ nfiles--;
+ lck_mtx_unlock(file_flist_lock);
- LIST_REMOVE(fp, f_list);
- cred = fp->f_cred;
+ cred = fg->fg_cred;
if (cred != NOCRED) {
- fp->f_cred = NOCRED;
- crfree(cred);
+ fg->fg_cred = NOCRED;
+ kauth_cred_rele(cred);
}
+ lck_mtx_destroy(&fg->fg_lock, file_lck_grp);
- nfiles--;
- memset(fp, 0xff, sizeof *fp);
- fp->f_count = (short)0xffff;
-
- FREE_ZONE(fp, sizeof *fp, M_FILE);
+ FREE_ZONE(fg, sizeof *fg, M_FILEGLOB);
}
void
fdexec(p)
struct proc *p;
{
- register struct filedesc *fdp = p->p_fd;
- register int i = fdp->fd_lastfile;
- register struct file **fpp = &fdp->fd_ofiles[i];
- register char *flags = &fdp->fd_ofileflags[i];
+ struct filedesc *fdp = p->p_fd;
+ int i = fdp->fd_lastfile;
+ struct fileproc **fpp = &fdp->fd_ofiles[i];
+ char *flags = &fdp->fd_ofileflags[i];
+ int funnel_state;
+
+ funnel_state = thread_funnel_set(kernel_flock, FALSE);
+ proc_fdlock(p);
while (i >= 0) {
if ((*flags & (UF_RESERVED|UF_EXCLOSE)) == UF_EXCLOSE) {
- register struct file *fp = *fpp;
+ struct fileproc *fp = *fpp;
+
+ if (i < fdp->fd_knlistsize)
+ knote_fdclose(p, i);
*fpp = NULL; *flags = 0;
if (i == fdp->fd_lastfile && i > 0)
fdp->fd_lastfile--;
- closef(fp, p);
+ closef_locked(fp, fp->f_fglob, p);
+ FREE_ZONE(fp, sizeof *fp, M_FILEPROC);
}
- else
- *flags &= ~UF_MAPPED;
i--; fpp--; flags--;
}
+ proc_fdunlock(p);
+ thread_funnel_set(kernel_flock, funnel_state);
}
/*
fdcopy(p)
struct proc *p;
{
- register struct filedesc *newfdp, *fdp = p->p_fd;
- register int i;
+ struct filedesc *newfdp, *fdp = p->p_fd;
+ int i;
+ struct fileproc *ofp, *fp;
+ vnode_t v_dir;
MALLOC_ZONE(newfdp, struct filedesc *,
sizeof *newfdp, M_FILEDESC, M_WAITOK);
+ if (newfdp == NULL)
+ return(NULL);
+
+ proc_fdlock(p);
+
+ /*
+ * the FD_CHROOT flag will be inherited via this copy
+ */
(void) memcpy(newfdp, fdp, sizeof *newfdp);
- VREF(newfdp->fd_cdir);
- if (newfdp->fd_rdir)
- VREF(newfdp->fd_rdir);
+
+ /*
+ * for both fd_cdir and fd_rdir make sure we get
+ * a valid reference... if we can't, than set
+ * set the pointer(s) to NULL in the child... this
+ * will keep us from using a non-referenced vp
+ * and allows us to do the vnode_rele only on
+ * a properly referenced vp
+ */
+ if ( (v_dir = newfdp->fd_cdir) ) {
+ if (vnode_getwithref(v_dir) == 0) {
+ if ( (vnode_ref(v_dir)) )
+ newfdp->fd_cdir = NULL;
+ vnode_put(v_dir);
+ } else
+ newfdp->fd_cdir = NULL;
+ }
+ if (newfdp->fd_cdir == NULL && fdp->fd_cdir) {
+ /*
+ * we couldn't get a new reference on
+ * the current working directory being
+ * inherited... we might as well drop
+ * our reference from the parent also
+ * since the vnode has gone DEAD making
+ * it useless... by dropping it we'll
+ * be that much closer to recyling it
+ */
+ vnode_rele(fdp->fd_cdir);
+ fdp->fd_cdir = NULL;
+ }
+
+ if ( (v_dir = newfdp->fd_rdir) ) {
+ if (vnode_getwithref(v_dir) == 0) {
+ if ( (vnode_ref(v_dir)) )
+ newfdp->fd_rdir = NULL;
+ vnode_put(v_dir);
+ } else
+ newfdp->fd_rdir = NULL;
+ }
+ if (newfdp->fd_rdir == NULL && fdp->fd_rdir) {
+ /*
+ * we couldn't get a new reference on
+ * the root directory being
+ * inherited... we might as well drop
+ * our reference from the parent also
+ * since the vnode has gone DEAD making
+ * it useless... by dropping it we'll
+ * be that much closer to recyling it
+ */
+ vnode_rele(fdp->fd_rdir);
+ fdp->fd_rdir = NULL;
+ }
newfdp->fd_refcnt = 1;
/*
while (i > 2 * NDEXTENT && i > newfdp->fd_lastfile * 2)
i /= 2;
}
- MALLOC_ZONE(newfdp->fd_ofiles, struct file **,
+ proc_fdunlock(p);
+
+ MALLOC_ZONE(newfdp->fd_ofiles, struct fileproc **,
i * OFILESIZE, M_OFILETABL, M_WAITOK);
+ if (newfdp->fd_ofiles == NULL) {
+ if (newfdp->fd_cdir)
+ vnode_rele(newfdp->fd_cdir);
+ if (newfdp->fd_rdir)
+ vnode_rele(newfdp->fd_rdir);
+
+ FREE_ZONE(newfdp, sizeof *newfdp, M_FILEDESC);
+ return(NULL);
+ }
+ proc_fdlock(p);
+
newfdp->fd_ofileflags = (char *) &newfdp->fd_ofiles[i];
newfdp->fd_nfiles = i;
+
if (fdp->fd_nfiles > 0) {
- register struct file **fpp;
- register char *flags;
+ struct fileproc **fpp;
+ char *flags;
(void) memcpy(newfdp->fd_ofiles, fdp->fd_ofiles,
i * sizeof *fdp->fd_ofiles);
(void) memcpy(newfdp->fd_ofileflags, fdp->fd_ofileflags,
i * sizeof *fdp->fd_ofileflags);
+ /*
+ * kq descriptors cannot be copied.
+ */
+ if (newfdp->fd_knlistsize != -1) {
+ fpp = &newfdp->fd_ofiles[newfdp->fd_lastfile];
+ for (i = newfdp->fd_lastfile; i >= 0; i--, fpp--) {
+ if (*fpp != NULL && (*fpp)->f_type == DTYPE_KQUEUE) {
+ *fpp = NULL;
+ if (i < newfdp->fd_freefile)
+ newfdp->fd_freefile = i;
+ }
+ if (*fpp == NULL && i == newfdp->fd_lastfile && i > 0)
+ newfdp->fd_lastfile--;
+ }
+ newfdp->fd_knlist = NULL;
+ newfdp->fd_knlistsize = -1;
+ newfdp->fd_knhash = NULL;
+ newfdp->fd_knhashmask = 0;
+ }
fpp = newfdp->fd_ofiles;
flags = newfdp->fd_ofileflags;
+
for (i = newfdp->fd_lastfile; i-- >= 0; fpp++, flags++)
- if (*fpp != NULL && !(*flags & UF_RESERVED)) {
- (void)fref(*fpp);
+ if ((ofp = *fpp) != NULL && !(*flags & UF_RESERVED)) {
+ MALLOC_ZONE(fp, struct fileproc *, sizeof(struct fileproc), M_FILEPROC, M_WAITOK);
+ bzero(fp, sizeof(struct fileproc));
+ fp->f_flags = ofp->f_flags;
+ //fp->f_iocount = ofp->f_iocount;
+ fp->f_iocount = 0;
+ fp->f_fglob = ofp->f_fglob;
+ (void)fg_ref(fp);
+ *fpp = fp;
} else {
*fpp = NULL;
*flags = 0;
} else
(void) memset(newfdp->fd_ofiles, 0, i * OFILESIZE);
+ proc_fdunlock(p);
return (newfdp);
}
struct proc *p;
{
struct filedesc *fdp;
- struct file **fpp;
+ struct fileproc *fp;
int i;
- struct vnode *tvp;
- if ((fdp = p->p_fd) == NULL)
- return;
- if (--fdp->fd_refcnt > 0)
+ proc_fdlock(p);
+
+ /* Certain daemons might not have file descriptors */
+ fdp = p->p_fd;
+
+ if ((fdp == NULL) || (--fdp->fd_refcnt > 0)) {
+ proc_fdunlock(p);
return;
- p->p_fd = NULL;
- if (fdp->fd_nfiles > 0) {
- fpp = fdp->fd_ofiles;
- for (i = fdp->fd_lastfile; i-- >= 0; fpp++)
- if (*fpp)
- (void) closef(*fpp, p);
- FREE_ZONE(fdp->fd_ofiles,
- fdp->fd_nfiles * OFILESIZE, M_OFILETABL);
- }
- tvp = fdp->fd_cdir;
- fdp->fd_cdir = NULL;
- vrele(tvp);
- if (fdp->fd_rdir) {
- tvp = fdp->fd_rdir;
- fdp->fd_rdir = NULL;
- vrele(tvp);
}
+ if (fdp->fd_refcnt == 0xffff)
+ panic("fdfree: bad fd_refcnt");
+
+ /* Last reference: the structure can't change out from under us */
+
+ if (fdp->fd_nfiles > 0 && fdp->fd_ofiles) {
+ for (i = fdp->fd_lastfile; i >= 0; i--) {
+ if ((fp = fdp->fd_ofiles[i]) != NULL) {
+
+ if (fdp->fd_ofileflags[i] & UF_RESERVED)
+ panic("fdfree: found fp with UF_RESERVED\n");
+
+ /* closef drops the iocount ... */
+ if ((fp->f_flags & FP_INCHRREAD) != 0)
+ fp->f_iocount++;
+ fdp->fd_ofiles[i] = NULL;
+ fdp->fd_ofileflags[i] |= UF_RESERVED;
+
+ if (i < fdp->fd_knlistsize)
+ knote_fdclose(p, i);
+ if (fp->f_flags & FP_WAITEVENT)
+ (void)waitevent_close(p, fp);
+ (void) closef_locked(fp, fp->f_fglob, p);
+ FREE_ZONE(fp, sizeof *fp, M_FILEPROC);
+ }
+ }
+ FREE_ZONE(fdp->fd_ofiles, fdp->fd_nfiles * OFILESIZE, M_OFILETABL);
+ fdp->fd_ofiles = NULL;
+ fdp->fd_nfiles = 0;
+ }
+
+ proc_fdunlock(p);
+
+ if (fdp->fd_cdir)
+ vnode_rele(fdp->fd_cdir);
+ if (fdp->fd_rdir)
+ vnode_rele(fdp->fd_rdir);
+
+ proc_fdlock(p);
+ p->p_fd = NULL;
+ proc_fdunlock(p);
+
+ if (fdp->fd_knlist)
+ FREE(fdp->fd_knlist, M_KQUEUE);
+ if (fdp->fd_knhash)
+ FREE(fdp->fd_knhash, M_KQUEUE);
+
FREE_ZONE(fdp, sizeof *fdp, M_FILEDESC);
}
static int
-closef_finish(fp, p)
- register struct file *fp;
- register struct proc *p;
+closef_finish(fp, fg, p)
+ struct fileproc *fp;
+ struct fileglob *fg;
+ struct proc *p;
{
struct vnode *vp;
struct flock lf;
int error;
+ struct vfs_context context;
- if ((fp->f_flag & FHASLOCK) && fp->f_type == DTYPE_VNODE) {
+ if ((fg->fg_flag & FHASLOCK) && fg->fg_type == DTYPE_VNODE) {
lf.l_whence = SEEK_SET;
lf.l_start = 0;
lf.l_len = 0;
lf.l_type = F_UNLCK;
- vp = (struct vnode *)fp->f_data;
- (void) VOP_ADVLOCK(vp, (caddr_t)fp, F_UNLCK, &lf, F_FLOCK);
+ vp = (struct vnode *)fg->fg_data;
+ context.vc_proc = p;
+ context.vc_ucred = fg->fg_cred;
+
+ (void) VNOP_ADVLOCK(vp, (caddr_t)fg, F_UNLCK, &lf, F_FLOCK, &context);
}
- if (fp->f_ops)
- error = fo_close(fp, p);
+ if (fg->fg_ops)
+ error = fo_close(fg, p);
else
error = 0;
- ffree(fp);
+
+ if (((fp != (struct fileproc *)0) && ((fp->f_flags & FP_INCHRREAD) != 0))) {
+ proc_fdlock(p);
+ if ( ((fp->f_flags & FP_INCHRREAD) != 0) ) {
+ fileproc_drain(p, fp);
+ }
+ proc_fdunlock(p);
+ }
+ fg_free(fg);
+
return (error);
}
+int
+closef(fg, p)
+ struct fileglob *fg;
+ struct proc *p;
+{
+ int error;
+
+ proc_fdlock(p);
+ error = closef_locked((struct fileproc *)0, fg, p);
+ proc_fdunlock(p);
+
+ return(error);
+}
/*
* Internal form of close.
* Decrement reference count on file structure.
* that was being passed in a message.
*/
int
-closef(fp, p)
- register struct file *fp;
- register struct proc *p;
+closef_locked(fp, fg, p)
+ struct fileproc *fp;
+ struct fileglob *fg;
+ struct proc *p;
{
struct vnode *vp;
struct flock lf;
+ struct vfs_context context;
int error;
- if (fp == NULL)
+ if (fg == NULL) {
return (0);
+ }
/*
* POSIX record locking dictates that any close releases ALL
* locks owned by this process. This is handled by setting
* If the descriptor was in a message, POSIX-style locks
* aren't passed with the descriptor.
*/
- if (p && (p->p_flag & P_ADVLOCK) && fp->f_type == DTYPE_VNODE) {
+ if (p && (p->p_ladvflag & P_LADVLOCK) && fg->fg_type == DTYPE_VNODE) {
+ proc_fdunlock(p);
+
lf.l_whence = SEEK_SET;
lf.l_start = 0;
lf.l_len = 0;
lf.l_type = F_UNLCK;
- vp = (struct vnode *)fp->f_data;
- (void) VOP_ADVLOCK(vp, (caddr_t)p, F_UNLCK, &lf, F_POSIX);
+ vp = (struct vnode *)fg->fg_data;
+
+ if ( (error = vnode_getwithref(vp)) == 0 ) {
+ context.vc_proc = p;
+ context.vc_ucred = fg->fg_cred;
+ (void) VNOP_ADVLOCK(vp, (caddr_t)p, F_UNLCK, &lf, F_POSIX, &context);
+
+ (void)vnode_put(vp);
+ }
+ proc_fdlock(p);
}
- if (frele_internal(fp) > 0)
+ lck_mtx_lock(&fg->fg_lock);
+ fg->fg_count--;
+
+ if (fg->fg_count > 0) {
+ lck_mtx_unlock(&fg->fg_lock);
return (0);
- return(closef_finish(fp, p));
+ }
+ if (fg->fg_count != 0)
+ panic("fg: being freed with bad fg_count (%d)", fg, fg->fg_count);
+
+ if (fp && (fp->f_flags & FP_WRITTEN))
+ fg->fg_flag |= FWASWRITTEN;
+
+ fg->fg_lflags |= FG_TERM;
+ lck_mtx_unlock(&fg->fg_lock);
+
+ proc_fdunlock(p);
+ error = closef_finish(fp, fg, p);
+ proc_fdlock(p);
+
+ return(error);
+}
+
+
+extern int selwait;
+void
+fileproc_drain(struct proc *p, struct fileproc * fp)
+{
+ fp->f_iocount-- ; /* (the one the close holds) */
+
+ while (fp->f_iocount) {
+ if (((fp->f_flags & FP_INSELECT)== FP_INSELECT)) {
+ wait_queue_wakeup_all((wait_queue_t)fp->f_waddr, &selwait, THREAD_INTERRUPTED);
+ } else {
+ if (fp->f_fglob->fg_ops->fo_drain) {
+ (*fp->f_fglob->fg_ops->fo_drain)(fp, p);
+ }
+ }
+ p->p_fpdrainwait = 1;
+
+ msleep(&p->p_fpdrainwait, &p->p_fdmlock, PRIBIO, "fpdrain",0);
+
+ //panic("successful wait after drain\n");
+ }
+}
+
+int
+fp_free(struct proc * p, int fd, struct fileproc * fp)
+{
+ proc_fdlock(p);
+ fdrelse(p, fd);
+ proc_fdunlock(p);
+
+ fg_free(fp->f_fglob);
+ FREE_ZONE(fp, sizeof *fp, M_FILEPROC);
}
+
/*
* Apply an advisory lock on a file descriptor.
*
* Just attempt to get a record lock of the requested type on
* the entire file (l_whence = SEEK_SET, l_start = 0, l_len = 0).
*/
-struct flock_args {
- int fd;
- int how;
-};
-/* ARGSUSED */
int
-flock(p, uap, retval)
- struct proc *p;
- register struct flock_args *uap;
- register_t *retval;
+flock(struct proc *p, register struct flock_args *uap, __unused register_t *retval)
{
int fd = uap->fd;
int how = uap->how;
- register struct filedesc *fdp = p->p_fd;
- register struct file *fp;
+ struct fileproc *fp;
struct vnode *vp;
struct flock lf;
+ struct vfs_context context;
+ int error=0;
+
+ AUDIT_ARG(fd, uap->fd);
+ if ( (error = fp_getfvp(p, fd, &fp, &vp)) ) {
+ return(error);
+ }
+ if ( (error = vnode_getwithref(vp)) ) {
+ goto out1;
+ }
+ AUDIT_ARG(vnpath, vp, ARG_VNODE1);
+
+ context.vc_proc = p;
+ context.vc_ucred = fp->f_cred;
- if ((u_int)fd >= fdp->fd_nfiles ||
- (fp = fdp->fd_ofiles[fd]) == NULL ||
- (fdp->fd_ofileflags[fd] & UF_RESERVED))
- return (EBADF);
- if (fp->f_type != DTYPE_VNODE)
- return (EOPNOTSUPP);
- vp = (struct vnode *)fp->f_data;
lf.l_whence = SEEK_SET;
lf.l_start = 0;
lf.l_len = 0;
if (how & LOCK_UN) {
lf.l_type = F_UNLCK;
fp->f_flag &= ~FHASLOCK;
- return (VOP_ADVLOCK(vp, (caddr_t)fp, F_UNLCK, &lf, F_FLOCK));
+ error = VNOP_ADVLOCK(vp, (caddr_t)fp->f_fglob, F_UNLCK, &lf, F_FLOCK, &context);
+ goto out;
}
if (how & LOCK_EX)
lf.l_type = F_WRLCK;
else if (how & LOCK_SH)
lf.l_type = F_RDLCK;
- else
- return (EBADF);
+ else {
+ error = EBADF;
+ goto out;
+ }
fp->f_flag |= FHASLOCK;
- if (how & LOCK_NB)
- return (VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, F_FLOCK));
- return (VOP_ADVLOCK(vp, (caddr_t)fp, F_SETLK, &lf, F_FLOCK|F_WAIT));
+ if (how & LOCK_NB) {
+ error = VNOP_ADVLOCK(vp, (caddr_t)fp->f_fglob, F_SETLK, &lf, F_FLOCK, &context);
+ goto out;
+ }
+ error = VNOP_ADVLOCK(vp, (caddr_t)fp->f_fglob, F_SETLK, &lf, F_FLOCK|F_WAIT, &context);
+out:
+ (void)vnode_put(vp);
+out1:
+ fp_drop(p, fd, fp, 0);
+ return(error);
+
}
/*
* consists of only the ``open()'' routine, because all subsequent
* references to this file will be direct to the other driver.
*/
-/* ARGSUSED */
int
-fdopen(dev, mode, type, p)
- dev_t dev;
- int mode, type;
- struct proc *p;
+fdopen(dev_t dev, __unused int mode, __unused int type, struct proc *p)
{
/*
* the file descriptor being sought for duplication. The error
* return ensures that the vnode for this device will be released
* by vn_open. Open will detect this special error and take the
- * actions in dupfdopen below. Other callers of vn_open or VOP_OPEN
+ * actions in dupfdopen below. Other callers of vn_open or vnop_open
* will simply report the error.
*/
p->p_dupfd = minor(dev);
int mode;
int error;
{
- register struct file *wfp;
- struct file *fp;
+ struct fileproc *wfp;
+ struct fileproc *fp;
+ struct proc * p = current_proc();
/*
* If the to-be-dup'd fd number is greater than the allowed number
* falloc could allocate an already closed to-be-dup'd descriptor
* as the new descriptor.
*/
+ proc_fdlock(p);
+
fp = fdp->fd_ofiles[indx];
- if ((u_int)dfd >= fdp->fd_nfiles ||
+ if (dfd < 0 || dfd >= fdp->fd_nfiles ||
(wfp = fdp->fd_ofiles[dfd]) == NULL || wfp == fp ||
- (fdp->fd_ofileflags[dfd] & UF_RESERVED))
- return (EBADF);
+ (fdp->fd_ofileflags[dfd] & UF_RESERVED)) {
+ proc_fdunlock(p);
+ return (EBADF);
+ }
/*
* There are two cases of interest here.
*
* Check that the mode the file is being opened for is a
* subset of the mode of the existing descriptor.
*/
- if (((mode & (FREAD|FWRITE)) | wfp->f_flag) != wfp->f_flag)
+ if (((mode & (FREAD|FWRITE)) | wfp->f_flag) != wfp->f_flag) {
+ proc_fdunlock(p);
return (EACCES);
- (void)fref(wfp);
+ }
if (indx > fdp->fd_lastfile)
- fdp->fd_lastfile = indx;;
- fdp->fd_ofiles[indx] = wfp;
+ fdp->fd_lastfile = indx;
+ (void)fg_ref(wfp);
+
+ if (fp->f_fglob)
+ fg_free(fp->f_fglob);
+ fp->f_fglob = wfp->f_fglob;
+
fdp->fd_ofileflags[indx] = fdp->fd_ofileflags[dfd];
+
+ proc_fdunlock(p);
return (0);
case ENXIO:
* Steal away the file pointer from dfd, and stuff it into indx.
*/
if (indx > fdp->fd_lastfile)
- fdp->fd_lastfile = indx;;
- fdp->fd_ofiles[indx] = fdp->fd_ofiles[dfd];
+ fdp->fd_lastfile = indx;
+
+ if (fp->f_fglob)
+ fg_free(fp->f_fglob);
+ fp->f_fglob = wfp->f_fglob;
+
fdp->fd_ofileflags[indx] = fdp->fd_ofileflags[dfd];
_fdrelse(fdp, dfd);
+
+ proc_fdunlock(p);
+
+ FREE_ZONE(wfp, sizeof *fp, M_FILEPROC);
+
return (0);
default:
+ proc_fdunlock(p);
return (error);
}
/* NOTREACHED */
}
-/* Reference manipulation routines for the file structure */
-
-int
-fref(struct file *fp)
+void
+fg_ref(struct fileproc * fp)
{
- if (fp->f_count == (short)0xffff)
- return (-1);
- if (++fp->f_count <= 0)
- panic("fref: f_count");
- return ((int)fp->f_count);
+ struct fileglob *fg;
+
+ fg = fp->f_fglob;
+
+ lck_mtx_lock(&fg->fg_lock);
+ fg->fg_count++;
+ lck_mtx_unlock(&fg->fg_lock);
}
-static int
-frele_internal(struct file *fp)
+void
+fg_drop(struct fileproc * fp)
{
- if (fp->f_count == (short)0xffff)
- panic("frele: stale");
- if (--fp->f_count < 0)
- panic("frele: count < 0");
- return ((int)fp->f_count);
+ struct fileglob *fg;
+
+ fg = fp->f_fglob;
+ lck_mtx_lock(&fg->fg_lock);
+ fg->fg_count--;
+ lck_mtx_unlock(&fg->fg_lock);
}
-int
-frele(struct file *fp)
+void
+fg_insertuipc(struct fileglob * fg)
{
- int count;
- funnel_t * fnl;
- extern int disable_funnel;
+int insertque = 0;
- fnl = thread_funnel_get();
- /*
- * If the funnels are merged then atleast a funnel should be held
- * else frele should come in with kernel funnel only
- */
- if (!disable_funnel && (fnl != kernel_flock)) {
- panic("frele: kernel funnel not held");
+ lck_mtx_lock(&fg->fg_lock);
+
+ while (fg->fg_lflags & FG_RMMSGQ) {
+ fg->fg_lflags |= FG_WRMMSGQ;
+ msleep(&fg->fg_lflags, &fg->fg_lock, 0, "fg_insertuipc", 0);
+ }
- } else if (fnl == THR_FUNNEL_NULL) {
- panic("frele: no funnel held");
+ fg->fg_count++;
+ fg->fg_msgcount++;
+ if (fg->fg_msgcount == 1) {
+ fg->fg_lflags |= FG_INSMSGQ;
+ insertque=1;
}
+ lck_mtx_unlock(&fg->fg_lock);
+
+ if (insertque) {
+ lck_mtx_lock(uipc_lock);
+ LIST_INSERT_HEAD(&fmsghead, fg, f_msglist);
+ lck_mtx_unlock(uipc_lock);
+ lck_mtx_lock(&fg->fg_lock);
+ fg->fg_lflags &= ~FG_INSMSGQ;
+ if (fg->fg_lflags & FG_WINSMSGQ) {
+ fg->fg_lflags &= ~FG_WINSMSGQ;
+ wakeup(&fg->fg_lflags);
+ }
+ lck_mtx_unlock(&fg->fg_lock);
+ }
+
+}
- if ((count = frele_internal(fp)) == 0) {
- /* some one closed the fd while we were blocked */
- (void)closef_finish(fp, current_proc());
+void
+fg_removeuipc(struct fileglob * fg)
+{
+int removeque = 0;
+
+ lck_mtx_lock(&fg->fg_lock);
+ while (fg->fg_lflags & FG_INSMSGQ) {
+ fg->fg_lflags |= FG_WINSMSGQ;
+ msleep(&fg->fg_lflags, &fg->fg_lock, 0, "fg_removeuipc", 0);
+ }
+ fg->fg_msgcount--;
+ if (fg->fg_msgcount == 0) {
+ fg->fg_lflags |= FG_RMMSGQ;
+ removeque=1;
}
- return(count);
+ lck_mtx_unlock(&fg->fg_lock);
+
+ if (removeque) {
+ lck_mtx_lock(uipc_lock);
+ LIST_REMOVE(fg, f_msglist);
+ lck_mtx_unlock(uipc_lock);
+ lck_mtx_lock(&fg->fg_lock);
+ fg->fg_lflags &= ~FG_RMMSGQ;
+ if (fg->fg_lflags & FG_WRMMSGQ) {
+ fg->fg_lflags &= ~FG_WRMMSGQ;
+ wakeup(&fg->fg_lflags);
+ }
+ lck_mtx_unlock(&fg->fg_lock);
+ }
+}
+
+
+int
+fo_read(struct fileproc *fp, struct uio *uio, kauth_cred_t cred, int flags, struct proc *p)
+{
+ return ((*fp->f_ops->fo_read)(fp, uio, cred, flags, p));
+}
+
+int
+fo_write(struct fileproc *fp, struct uio *uio, kauth_cred_t cred, int flags, struct proc *p)
+{
+ return((*fp->f_ops->fo_write)(fp, uio, cred, flags, p));
+}
+
+int
+fo_ioctl(struct fileproc *fp, u_long com, caddr_t data, struct proc *p)
+{
+int error;
+
+ proc_fdunlock(p);
+ error = (*fp->f_ops->fo_ioctl)(fp, com, data, p);
+ proc_fdlock(p);
+ return(error);
+}
+
+int
+fo_select(struct fileproc *fp, int which, void *wql, struct proc *p)
+{
+ return((*fp->f_ops->fo_select)(fp, which, wql, p));
+}
+
+int
+fo_close(struct fileglob *fg, struct proc *p)
+{
+ return((*fg->fg_ops->fo_close)(fg, p));
}
int
-fcount(struct file *fp)
+fo_kqfilter(struct fileproc *fp, struct knote *kn, struct proc *p)
{
- if (fp->f_count == (short)0xffff)
- panic("fcount: stale");
- return ((int)fp->f_count);
+ return ((*fp->f_ops->fo_kqfilter)(fp, kn, p));
}
projects / apple / xnu.git / blobdiff