netbsd32_compat_20.c revision 1.36.10.2
1 /* $NetBSD: netbsd32_compat_20.c,v 1.36.10.2 2018/09/10 10:49:09 pgoyette 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 1.36.10.2 2018/09/10 10:49:09 pgoyette Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/module.h> 35 #include <sys/mount.h> 36 #include <sys/stat.h> 37 #include <sys/time.h> 38 #include <sys/ktrace.h> 39 #include <sys/vnode.h> 40 #include <sys/socket.h> 41 #include <sys/file.h> 42 #include <sys/filedesc.h> 43 #include <sys/namei.h> 44 #include <sys/syscallargs.h> 45 #include <sys/proc.h> 46 #include <sys/dirent.h> 47 48 #include <compat/netbsd32/netbsd32.h> 49 #include <compat/netbsd32/netbsd32_syscallvar.h> 50 #include <compat/netbsd32/netbsd32_syscallargs.h> 51 #include <compat/netbsd32/netbsd32_conv.h> 52 53 static inline void compat_20_netbsd32_from_statvfs(struct statvfs *, 54 struct netbsd32_statfs *); 55 56 static inline void 57 compat_20_netbsd32_from_statvfs(struct statvfs *sbp, struct netbsd32_statfs *sb32p) 58 { 59 sb32p->f_flags = sbp->f_flag; 60 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 61 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 62 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 63 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 64 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 65 sb32p->f_files = (netbsd32_long)sbp->f_files; 66 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 67 sb32p->f_fsid = sbp->f_fsidx; 68 sb32p->f_owner = sbp->f_owner; 69 sb32p->f_spare[0] = 0; 70 sb32p->f_spare[1] = 0; 71 sb32p->f_spare[2] = 0; 72 sb32p->f_spare[3] = 0; 73 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 74 sizeof(sb32p->f_fstypename)); 75 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 76 sizeof(sb32p->f_mntonname)); 77 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 78 sizeof(sb32p->f_mntfromname)); 79 } 80 81 int 82 compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval) 83 { 84 /* { 85 syscallarg(netbsd32_statfsp_t) buf; 86 syscallarg(netbsd32_long) bufsize; 87 syscallarg(int) flags; 88 } */ 89 int root = 0; 90 struct proc *p = l->l_proc; 91 mount_iterator_t *iter; 92 struct mount *mp; 93 struct statvfs *sb; 94 struct netbsd32_statfs sb32; 95 void *sfsp; 96 size_t count, maxcount; 97 int error = 0; 98 99 sb = STATVFSBUF_GET(); 100 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 101 sfsp = SCARG_P32(uap, buf); 102 mountlist_iterator_init(&iter); 103 count = 0; 104 while ((mp = mountlist_iterator_next(iter)) != NULL) { 105 if (sfsp && count < maxcount) { 106 error = dostatvfs(mp, sb, l, SCARG(uap, flags), 0); 107 if (error) { 108 error = 0; 109 continue; 110 } 111 compat_20_netbsd32_from_statvfs(sb, &sb32); 112 error = copyout(&sb32, sfsp, sizeof(sb32)); 113 if (error) 114 goto out; 115 sfsp = (char *)sfsp + sizeof(sb32); 116 root |= strcmp(sb->f_mntonname, "/") == 0; 117 } 118 count++; 119 } 120 121 if (root == 0 && p->p_cwdi->cwdi_rdir) { 122 /* 123 * fake a root entry 124 */ 125 error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, 126 sb, l, SCARG(uap, flags), 1); 127 if (error != 0) 128 goto out; 129 if (sfsp) { 130 compat_20_netbsd32_from_statvfs(sb, &sb32); 131 error = copyout(&sb32, sfsp, sizeof(sb32)); 132 if (error != 0) 133 goto out; 134 } 135 count++; 136 } 137 138 if (sfsp && count > maxcount) 139 *retval = maxcount; 140 else 141 *retval = count; 142 out: 143 mountlist_iterator_destroy(iter); 144 STATVFSBUF_PUT(sb); 145 return error; 146 } 147 148 int 149 compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval) 150 { 151 /* { 152 syscallarg(const netbsd32_charp) path; 153 syscallarg(netbsd32_statfsp_t) buf; 154 } */ 155 struct mount *mp; 156 struct statvfs *sb; 157 struct netbsd32_statfs s32; 158 int error; 159 struct vnode *vp; 160 161 error = namei_simple_user(SCARG_P32(uap, path), 162 NSM_FOLLOW_TRYEMULROOT, &vp); 163 if (error != 0) 164 return (error); 165 mp = vp->v_mount; 166 vrele(vp); 167 sb = STATVFSBUF_GET(); 168 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 169 goto out; 170 compat_20_netbsd32_from_statvfs(sb, &s32); 171 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 172 out: 173 STATVFSBUF_PUT(sb); 174 return error; 175 } 176 177 int 178 compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval) 179 { 180 /* { 181 syscallarg(int) fd; 182 syscallarg(netbsd32_statfsp_t) buf; 183 } */ 184 file_t *fp; 185 struct mount *mp; 186 struct statvfs *sb; 187 struct netbsd32_statfs s32; 188 int error; 189 190 /* fd_getvnode() will use the descriptor for us */ 191 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 192 return (error); 193 mp = fp->f_vnode->v_mount; 194 sb = STATVFSBUF_GET(); 195 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 196 goto out; 197 compat_20_netbsd32_from_statvfs(sb, &s32); 198 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 199 out: 200 STATVFSBUF_PUT(sb); 201 fd_putfile(SCARG(uap, fd)); 202 return (error); 203 } 204 205 int 206 compat_20_netbsd32_fhstatfs(struct lwp *l, const struct compat_20_netbsd32_fhstatfs_args *uap, register_t *retval) 207 { 208 /* { 209 syscallarg(const netbsd32_fhandlep_t) fhp; 210 syscallarg(struct statvfs *) buf; 211 } */ 212 struct compat_30_sys_fhstatvfs1_args ua; 213 214 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 215 NETBSD32TOP_UAP(buf, struct statvfs); 216 #ifdef notyet 217 NETBSD32TOP_UAP(flags, int); 218 #endif 219 return (compat_30_sys_fhstatvfs1(l, &ua, retval)); 220 } 221 222 static struct syscall_package compat_netbsd32_20_syscalls[] = { 223 { NETBSD32_SYS_getfsstat, 0, 224 (sy_call_t *)compat_20_netbsd32_getfsstat }, 225 { 0, 0, NULL } 226 }; 227 228 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_20, "compat_netbsd32,compat_20"); 229 230 static int 231 compat_netbsd32_20_modcmt(modcmd_t cmd, void *arg) 232 { 233 234 switch (cmd) { 235 case MODULE_CMD_INIT: 236 return syscall_establish(NULL, compat_netbsd32_20_syscalls); 237 238 case MODULE_CMD_FINI: 239 return syscall_disestablish(NULL, compat_netbsd32_20_syscalls); 240 241 default: 242 return ENOTTY; 243 } 244 } 245
Indexes created Thu Oct 02 07:10:07 GMT 2025