1 /* $NetBSD: pathfs.c,v 1.1 2012/01/18 23:12:21 nonaka Exp $ */ 2 3 /*- 4 * Copyright (C) 2012 NONAKA Kimihiro <nonaka@netbsd.org> 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, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "boot.h" 29 #include "pathfs.h" 30 #include "unixdev.h" 31 #include "compat_linux.h" 32 33 __compactcall int 34 pathfs_open(const char *path, struct open_file *fd) 35 { 36 37 if (strcmp(fd->f_dev->dv_name, "path")) 38 return EINVAL; 39 40 (void) ulseek((int)fd->f_devdata, 0L, SEEK_SET); 41 return 0; 42 } 43 44 __compactcall int 45 pathfs_read(struct open_file *fd, void *vbuf, size_t nbyte, size_t *resid) 46 { 47 char *buf = vbuf; 48 size_t off = 0; 49 ssize_t rsz; 50 51 while (off < nbyte) { 52 rsz = uread((int)fd->f_devdata, buf + off, nbyte - off); 53 if (rsz < 0) 54 return errno; 55 if (rsz == 0) 56 break; 57 off += rsz; 58 } 59 60 *resid -= off; 61 return 0; 62 } 63 64 __compactcall int 65 pathfs_write(struct open_file *fd, void *vbuf, size_t size, size_t *resid) 66 { 67 68 return EROFS; 69 } 70 71 __compactcall off_t 72 pathfs_seek(struct open_file *fd, off_t offset, int whence) 73 { 74 75 return ulseek((int)fd->f_devdata, offset, whence); 76 } 77 78 __compactcall int 79 pathfs_close(struct open_file *fd) 80 { 81 82 return 0; 83 } 84 85 __compactcall int 86 pathfs_stat(struct open_file *fd, struct stat *sb) 87 { 88 struct linux_stat lsb; 89 int rv; 90 91 rv = ufstat((int)fd->f_devdata, &lsb); 92 if (rv < 0) 93 return errno; 94 95 sb->st_ino = lsb.lst_ino; 96 sb->st_mode = lsb.lst_mode; 97 sb->st_nlink = lsb.lst_nlink; 98 sb->st_uid = lsb.lst_uid; 99 sb->st_gid = lsb.lst_gid; 100 sb->st_size = lsb.lst_size; 101 sb->st_blksize = lsb.lst_blksize; 102 sb->st_blocks = lsb.lst_blocks; 103 sb->st_atime = lsb.lst_atime; 104 sb->st_mtime = lsb.lst_mtime; 105 sb->st_ctime = lsb.lst_ctime; 106 return 0; 107 } 108 109 __compactcall void 110 pathfs_ls(struct open_file *f, const char *pattern) 111 { 112 113 printf("Currently ls command is unsupported by pathfs.\n"); 114 } 115