netbsd32_compat_20.c revision 1.37
1 /* $NetBSD: netbsd32_compat_20.c,v 1.37 2018/05/10 02:36:07 christos 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 1.37 2018/05/10 02:36:07 christos 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/socket.h> 40 #include <sys/file.h> 41 #include <sys/filedesc.h> 42 #include <sys/namei.h> 43 #include <sys/syscallargs.h> 44 #include <sys/proc.h> 45 #include <sys/dirent.h> 46 47 #include <compat/netbsd32/netbsd32.h> 48 #include <compat/netbsd32/netbsd32_syscallargs.h> 49 #include <compat/netbsd32/netbsd32_conv.h> 50 51 static inline void compat_20_netbsd32_from_statvfs(struct statvfs *, 52 struct netbsd32_statfs *); 53 54 static inline void 55 compat_20_netbsd32_from_statvfs(struct statvfs *sbp, struct netbsd32_statfs *sb32p) 56 { 57 sb32p->f_flags = sbp->f_flag; 58 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 59 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 60 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 61 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 62 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 63 sb32p->f_files = (netbsd32_long)sbp->f_files; 64 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 65 sb32p->f_fsid = sbp->f_fsidx; 66 sb32p->f_owner = sbp->f_owner; 67 sb32p->f_spare[0] = 0; 68 sb32p->f_spare[1] = 0; 69 sb32p->f_spare[2] = 0; 70 sb32p->f_spare[3] = 0; 71 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 72 sizeof(sb32p->f_fstypename)); 73 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 74 sizeof(sb32p->f_mntonname)); 75 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 76 sizeof(sb32p->f_mntfromname)); 77 } 78 79 int 80 compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval) 81 { 82 /* { 83 syscallarg(netbsd32_statfsp_t) buf; 84 syscallarg(netbsd32_long) bufsize; 85 syscallarg(int) flags; 86 } */ 87 int root = 0; 88 struct proc *p = l->l_proc; 89 mount_iterator_t *iter; 90 struct mount *mp; 91 struct statvfs *sb; 92 struct netbsd32_statfs sb32; 93 void *sfsp; 94 size_t count, maxcount; 95 int error = 0; 96 97 sb = STATVFSBUF_GET(); 98 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 99 sfsp = SCARG_P32(uap, buf); 100 mountlist_iterator_init(&iter); 101 count = 0; 102 while ((mp = mountlist_iterator_next(iter)) != NULL) { 103 if (sfsp && count < maxcount) { 104 error = dostatvfs(mp, sb, l, SCARG(uap, flags), 0); 105 if (error) { 106 error = 0; 107 continue; 108 } 109 compat_20_netbsd32_from_statvfs(sb, &sb32); 110 error = copyout(&sb32, sfsp, sizeof(sb32)); 111 if (error) 112 goto out; 113 sfsp = (char *)sfsp + sizeof(sb32); 114 root |= strcmp(sb->f_mntonname, "/") == 0; 115 } 116 count++; 117 } 118 119 if (root == 0 && p->p_cwdi->cwdi_rdir) { 120 /* 121 * fake a root entry 122 */ 123 error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, 124 sb, l, SCARG(uap, flags), 1); 125 if (error != 0) 126 goto out; 127 if (sfsp) { 128 compat_20_netbsd32_from_statvfs(sb, &sb32); 129 error = copyout(&sb32, sfsp, sizeof(sb32)); 130 if (error != 0) 131 goto out; 132 } 133 count++; 134 } 135 136 if (sfsp && count > maxcount) 137 *retval = maxcount; 138 else 139 *retval = count; 140 out: 141 mountlist_iterator_destroy(iter); 142 STATVFSBUF_PUT(sb); 143 return error; 144 } 145 146 int 147 compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval) 148 { 149 /* { 150 syscallarg(const netbsd32_charp) path; 151 syscallarg(netbsd32_statfsp_t) buf; 152 } */ 153 struct mount *mp; 154 struct statvfs *sb; 155 struct netbsd32_statfs s32; 156 int error; 157 struct vnode *vp; 158 159 error = namei_simple_user(SCARG_P32(uap, path), 160 NSM_FOLLOW_TRYEMULROOT, &vp); 161 if (error != 0) 162 return (error); 163 mp = vp->v_mount; 164 vrele(vp); 165 sb = STATVFSBUF_GET(); 166 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 167 goto out; 168 compat_20_netbsd32_from_statvfs(sb, &s32); 169 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 170 out: 171 STATVFSBUF_PUT(sb); 172 return error; 173 } 174 175 int 176 compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval) 177 { 178 /* { 179 syscallarg(int) fd; 180 syscallarg(netbsd32_statfsp_t) buf; 181 } */ 182 file_t *fp; 183 struct mount *mp; 184 struct statvfs *sb; 185 struct netbsd32_statfs s32; 186 int error; 187 188 /* fd_getvnode() will use the descriptor for us */ 189 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 190 return (error); 191 mp = fp->f_vnode->v_mount; 192 sb = STATVFSBUF_GET(); 193 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 194 goto out; 195 compat_20_netbsd32_from_statvfs(sb, &s32); 196 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 197 out: 198 STATVFSBUF_PUT(sb); 199 fd_putfile(SCARG(uap, fd)); 200 return (error); 201 } 202 203 int 204 compat_20_netbsd32_fhstatfs(struct lwp *l, const struct compat_20_netbsd32_fhstatfs_args *uap, register_t *retval) 205 { 206 /* { 207 syscallarg(const netbsd32_fhandlep_t) fhp; 208 syscallarg(struct statvfs *) buf; 209 } */ 210 struct compat_30_sys_fhstatvfs1_args ua; 211 212 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 213 NETBSD32TOP_UAP(buf, struct statvfs); 214 #ifdef notyet 215 NETBSD32TOP_UAP(flags, int); 216 #endif 217 return (compat_30_sys_fhstatvfs1(l, &ua, retval)); 218 } 219
Indexes created Wed Sep 24 15:09:51 GMT 2025