| vfs_cache.c (84249) | vfs_cache.c (85287) |
|---|---|
| 1/* 2 * Copyright (c) 1989, 1993, 1995 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Poul-Henning Kamp of the FreeBSD Project. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)vfs_cache.c 8.5 (Berkeley) 3/22/95 | 1/* 2 * Copyright (c) 1989, 1993, 1995 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Poul-Henning Kamp of the FreeBSD Project. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)vfs_cache.c 8.5 (Berkeley) 3/22/95 |
| 37 * $FreeBSD: head/sys/kern/vfs_cache.c 84249 2001-10-01 04:33:35Z dillon $ | 37 * $FreeBSD: head/sys/kern/vfs_cache.c 85287 2001-10-21 15:52:51Z des $ |
| 38 */ 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/kernel.h> 43#include <sys/lock.h> 44#include <sys/sysctl.h> 45#include <sys/mount.h> --- 742 unchanged lines hidden (view full) --- 788STATNODE(numfullpathcalls); 789STATNODE(numfullpathfail1); 790STATNODE(numfullpathfail2); 791STATNODE(numfullpathfail3); 792STATNODE(numfullpathfail4); 793STATNODE(numfullpathfound); 794 795int | 38 */ 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/kernel.h> 43#include <sys/lock.h> 44#include <sys/sysctl.h> 45#include <sys/mount.h> --- 742 unchanged lines hidden (view full) --- 788STATNODE(numfullpathcalls); 789STATNODE(numfullpathfail1); 790STATNODE(numfullpathfail2); 791STATNODE(numfullpathfail3); 792STATNODE(numfullpathfail4); 793STATNODE(numfullpathfound); 794 795int |
| 796textvp_fullpath(struct proc *p, char **retbuf, char **retfreebuf) { | 796vn_fullpath(struct thread *td, struct vnode *vn, char **retbuf, char **freebuf) 797{ |
| 797 char *bp, *buf; 798 int i, slash_prefixed; 799 struct filedesc *fdp; 800 struct namecache *ncp; | 798 char *bp, *buf; 799 int i, slash_prefixed; 800 struct filedesc *fdp; 801 struct namecache *ncp; |
| 801 struct vnode *vp, *textvp; | 802 struct vnode *vp; |
| 802 803 numfullpathcalls++; 804 if (disablefullpath) 805 return (ENODEV); | 803 804 numfullpathcalls++; 805 if (disablefullpath) 806 return (ENODEV); |
| 806 textvp = p->p_textvp; 807 if (textvp == NULL) | 807 if (vn == NULL) |
| 808 return (EINVAL); 809 buf = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 810 bp = buf + MAXPATHLEN - 1; 811 *bp = '\0'; | 808 return (EINVAL); 809 buf = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); 810 bp = buf + MAXPATHLEN - 1; 811 *bp = '\0'; |
| 812 fdp = p->p_fd; | 812 fdp = td->td_proc->p_fd; |
| 813 slash_prefixed = 0; | 813 slash_prefixed = 0; |
| 814 for (vp = textvp; vp != fdp->fd_rdir && vp != rootvnode;) { | 814 for (vp = vn; vp != fdp->fd_rdir && vp != rootvnode;) { |
| 815 if (vp->v_flag & VROOT) { 816 if (vp->v_mount == NULL) { /* forced unmount */ 817 free(buf, M_TEMP); 818 return (EBADF); 819 } 820 vp = vp->v_mount->mnt_vnodecovered; 821 continue; 822 } | 815 if (vp->v_flag & VROOT) { 816 if (vp->v_mount == NULL) { /* forced unmount */ 817 free(buf, M_TEMP); 818 return (EBADF); 819 } 820 vp = vp->v_mount->mnt_vnodecovered; 821 continue; 822 } |
| 823 if (vp != textvp && vp->v_dd->v_id != vp->v_ddid) { | 823 if (vp != vn && vp->v_dd->v_id != vp->v_ddid) { |
| 824 numfullpathfail1++; 825 free(buf, M_TEMP); 826 return (ENOTDIR); 827 } 828 ncp = TAILQ_FIRST(&vp->v_cache_dst); 829 if (!ncp) { 830 numfullpathfail2++; 831 free(buf, M_TEMP); 832 return (ENOENT); 833 } | 824 numfullpathfail1++; 825 free(buf, M_TEMP); 826 return (ENOTDIR); 827 } 828 ncp = TAILQ_FIRST(&vp->v_cache_dst); 829 if (!ncp) { 830 numfullpathfail2++; 831 free(buf, M_TEMP); 832 return (ENOENT); 833 } |
| 834 if (vp != textvp && ncp->nc_dvp != vp->v_dd) { | 834 if (vp != vn && ncp->nc_dvp != vp->v_dd) { |
| 835 numfullpathfail3++; 836 free(buf, M_TEMP); 837 return (EBADF); 838 } 839 for (i = ncp->nc_nlen - 1; i >= 0; i--) { 840 if (bp == buf) { 841 numfullpathfail4++; 842 free(buf, M_TEMP); --- 15 unchanged lines hidden (view full) --- 858 numfullpathfail4++; 859 free(buf, M_TEMP); 860 return (ENOMEM); 861 } 862 *--bp = '/'; 863 } 864 numfullpathfound++; 865 *retbuf = bp; | 835 numfullpathfail3++; 836 free(buf, M_TEMP); 837 return (EBADF); 838 } 839 for (i = ncp->nc_nlen - 1; i >= 0; i--) { 840 if (bp == buf) { 841 numfullpathfail4++; 842 free(buf, M_TEMP); --- 15 unchanged lines hidden (view full) --- 858 numfullpathfail4++; 859 free(buf, M_TEMP); 860 return (ENOMEM); 861 } 862 *--bp = '/'; 863 } 864 numfullpathfound++; 865 *retbuf = bp; |
| 866 *retfreebuf = buf; | 866 *freebuf = buf; |
| 867 return (0); 868} | 867 return (0); 868} |