netbsd32_compat_20.c revision 1.34.6.1
1 /* $NetBSD: netbsd32_compat_20.c,v 1.34.6.1 2017/04/21 16:53:43 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_20.c,v 1.34.6.1 2017/04/21 16:53:43 bouyer Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/mount.h> 35 #include <sys/stat.h> 36 #include <sys/time.h> 37 #include <sys/ktrace.h> 38 #include <sys/vnode.h> 39 #include <sys/file.h> 40 #include <sys/filedesc.h> 41 #include <sys/namei.h> 42 #include <sys/syscallargs.h> 43 #include <sys/proc.h> 44 #include <sys/dirent.h> 45 46 #include <compat/netbsd32/netbsd32.h> 47 #include <compat/netbsd32/netbsd32_syscallargs.h> 48 #include <compat/netbsd32/netbsd32_conv.h> 49 50 static inline void compat_20_netbsd32_from_statvfs(struct statvfs *, 51 struct netbsd32_statfs *); 52 53 static inline void 54 compat_20_netbsd32_from_statvfs(struct statvfs *sbp, struct netbsd32_statfs *sb32p) 55 { 56 sb32p->f_flags = sbp->f_flag; 57 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 58 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 59 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 60 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 61 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 62 sb32p->f_files = (netbsd32_long)sbp->f_files; 63 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 64 sb32p->f_fsid = sbp->f_fsidx; 65 sb32p->f_owner = sbp->f_owner; 66 sb32p->f_spare[0] = 0; 67 sb32p->f_spare[1] = 0; 68 sb32p->f_spare[2] = 0; 69 sb32p->f_spare[3] = 0; 70 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 71 sizeof(sb32p->f_fstypename)); 72 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 73 sizeof(sb32p->f_mntonname)); 74 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 75 sizeof(sb32p->f_mntfromname)); 76 } 77 78 int 79 compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval) 80 { 81 /* { 82 syscallarg(netbsd32_statfsp_t) buf; 83 syscallarg(netbsd32_long) bufsize; 84 syscallarg(int) flags; 85 } */ 86 int root = 0; 87 struct proc *p = l->l_proc; 88 mount_iterator_t *iter; 89 struct mount *mp; 90 struct statvfs *sb; 91 struct netbsd32_statfs sb32; 92 void *sfsp; 93 size_t count, maxcount; 94 int error = 0; 95 96 sb = STATVFSBUF_GET(); 97 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 98 sfsp = SCARG_P32(uap, buf); 99 mountlist_iterator_init(&iter); 100 count = 0; 101 while ((mp = mountlist_iterator_next(iter)) != NULL) { 102 if (sfsp && count < maxcount) { 103 error = dostatvfs(mp, sb, l, SCARG(uap, flags), 0); 104 if (error) { 105 error = 0; 106 continue; 107 } 108 compat_20_netbsd32_from_statvfs(sb, &sb32); 109 error = copyout(&sb32, sfsp, sizeof(sb32)); 110 if (error) 111 goto out; 112 sfsp = (char *)sfsp + sizeof(sb32); 113 root |= strcmp(sb->f_mntonname, "/") == 0; 114 } 115 count++; 116 } 117 118 if (root == 0 && p->p_cwdi->cwdi_rdir) { 119 /* 120 * fake a root entry 121 */ 122 error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, 123 sb, l, SCARG(uap, flags), 1); 124 if (error != 0) 125 goto out; 126 if (sfsp) { 127 compat_20_netbsd32_from_statvfs(sb, &sb32); 128 error = copyout(&sb32, sfsp, sizeof(sb32)); 129 if (error != 0) 130 goto out; 131 } 132 count++; 133 } 134 135 if (sfsp && count > maxcount) 136 *retval = maxcount; 137 else 138 *retval = count; 139 out: 140 mountlist_iterator_destroy(iter); 141 STATVFSBUF_PUT(sb); 142 return error; 143 } 144 145 int 146 compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval) 147 { 148 /* { 149 syscallarg(const netbsd32_charp) path; 150 syscallarg(netbsd32_statfsp_t) buf; 151 } */ 152 struct mount *mp; 153 struct statvfs *sb; 154 struct netbsd32_statfs s32; 155 int error; 156 struct vnode *vp; 157 158 error = namei_simple_user(SCARG_P32(uap, path), 159 NSM_FOLLOW_TRYEMULROOT, &vp); 160 if (error != 0) 161 return (error); 162 mp = vp->v_mount; 163 vrele(vp); 164 sb = STATVFSBUF_GET(); 165 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 166 goto out; 167 compat_20_netbsd32_from_statvfs(sb, &s32); 168 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 169 out: 170 STATVFSBUF_PUT(sb); 171 return error; 172 } 173 174 int 175 compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval) 176 { 177 /* { 178 syscallarg(int) fd; 179 syscallarg(netbsd32_statfsp_t) buf; 180 } */ 181 file_t *fp; 182 struct mount *mp; 183 struct statvfs *sb; 184 struct netbsd32_statfs s32; 185 int error; 186 187 /* fd_getvnode() will use the descriptor for us */ 188 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 189 return (error); 190 mp = fp->f_vnode->v_mount; 191 sb = STATVFSBUF_GET(); 192 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 193 goto out; 194 compat_20_netbsd32_from_statvfs(sb, &s32); 195 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 196 out: 197 STATVFSBUF_PUT(sb); 198 fd_putfile(SCARG(uap, fd)); 199 return (error); 200 } 201 202 int 203 compat_20_netbsd32_fhstatfs(struct lwp *l, const struct compat_20_netbsd32_fhstatfs_args *uap, register_t *retval) 204 { 205 /* { 206 syscallarg(const netbsd32_fhandlep_t) fhp; 207 syscallarg(struct statvfs *) buf; 208 } */ 209 struct compat_30_sys_fhstatvfs1_args ua; 210 211 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 212 NETBSD32TOP_UAP(buf, struct statvfs); 213 #ifdef notyet 214 NETBSD32TOP_UAP(flags, int); 215 #endif 216 return (compat_30_sys_fhstatvfs1(l, &ua, retval)); 217 } 218
Indexes created Thu Oct 02 07:10:07 GMT 2025