inode.c revision 4a66af9eaa9531372cfcb9e20103ed147c729ff9
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/fs/minix/inode.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1991, 1992 Linus Torvalds 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1996 Gertjan van Wingerde (gertjan@cs.vu.nl) 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Minix V2 fs support. 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modified for 680x0 by Andreas Schwab 10939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer * Updated to filesystem version 3 by Daniel Aragones 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "minix.h" 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/buffer_head.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/highuid.h> 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/vfs.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void minix_read_inode(struct inode * inode); 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int minix_write_inode(struct inode * inode, int wait); 23726c334223180e3c0197cc980a432681370d4bafDavid Howellsstatic int minix_statfs(struct dentry *dentry, struct kstatfs *buf); 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int minix_remount (struct super_block * sb, int * flags, char * data); 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void minix_delete_inode(struct inode *inode) 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 28fef266580e5cf897a1b63528fc6b1185e2d6bb87Mark Fasheh truncate_inode_pages(&inode->i_data, 0); 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_size = 0; 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds minix_truncate(inode); 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds minix_free_inode(inode); 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void minix_put_super(struct super_block *sb) 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_sb_info *sbi = minix_sb(sb); 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 40939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */ 41939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_ms->s_state = sbi->s_mount_state; 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mark_buffer_dirty(sbi->s_sbh); 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < sbi->s_imap_blocks; i++) 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse(sbi->s_imap[i]); 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < sbi->s_zmap_blocks; i++) 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse(sbi->s_zmap[i]); 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse (sbi->s_sbh); 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(sbi->s_imap); 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sb->s_fs_info = NULL; 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(sbi); 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 56e18b890bb0881bbab6f4f1a6cd20d9c60d66b003Christoph Lameterstatic struct kmem_cache * minix_inode_cachep; 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct inode *minix_alloc_inode(struct super_block *sb) 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_inode_info *ei; 61e94b1766097d53e6f3ccfb36c8baa562ffeda3fcChristoph Lameter ei = (struct minix_inode_info *)kmem_cache_alloc(minix_inode_cachep, GFP_KERNEL); 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ei) 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &ei->vfs_inode; 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void minix_destroy_inode(struct inode *inode) 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kmem_cache_free(minix_inode_cachep, minix_i(inode)); 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 72e18b890bb0881bbab6f4f1a6cd20d9c60d66b003Christoph Lameterstatic void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags) 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_inode_info *ei = (struct minix_inode_info *) foo; 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 76a35afb830f8d71ec211531aeb9a621b09a2efb39Christoph Lameter inode_init_once(&ei->vfs_inode); 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7820c2df83d25c6a95affe6157a4c9cac4cf5ffaacPaul Mundt 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int init_inodecache(void) 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds minix_inode_cachep = kmem_cache_create("minix_inode_cache", 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sizeof(struct minix_inode_info), 83fffb60f93ce5880aade88e01d7133b52a4879710Paul Jackson 0, (SLAB_RECLAIM_ACCOUNT| 84fffb60f93ce5880aade88e01d7133b52a4879710Paul Jackson SLAB_MEM_SPREAD), 8520c2df83d25c6a95affe6157a4c9cac4cf5ffaacPaul Mundt init_once); 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (minix_inode_cachep == NULL) 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void destroy_inodecache(void) 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 931a1d92c10dd24bbdc28b3d6e2d03ec199dd3a65bAlexey Dobriyan kmem_cache_destroy(minix_inode_cachep); 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 96ee9b6d61a2a43c5952eb43283f8db284a4e70b8aJosef 'Jeff' Sipekstatic const struct super_operations minix_sops = { 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .alloc_inode = minix_alloc_inode, 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .destroy_inode = minix_destroy_inode, 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .read_inode = minix_read_inode, 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_inode = minix_write_inode, 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .delete_inode = minix_delete_inode, 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .put_super = minix_put_super, 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .statfs = minix_statfs, 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .remount_fs = minix_remount, 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int minix_remount (struct super_block * sb, int * flags, char * data) 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_sb_info * sbi = minix_sb(sb); 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_super_block * ms; 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ms = sbi->s_ms; 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (*flags & MS_RDONLY) { 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ms->s_state & MINIX_VALID_FS || 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !(sbi->s_mount_state & MINIX_VALID_FS)) 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Mounting a rw partition read-only. */ 120939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer if (sbi->s_version != MINIX_V3) 121939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer ms->s_state = sbi->s_mount_state; 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mark_buffer_dirty(sbi->s_sbh); 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Mount a partition which is read-only, read-write. */ 125939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer if (sbi->s_version != MINIX_V3) { 126939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_mount_state = ms->s_state; 127939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer ms->s_state &= ~MINIX_VALID_FS; 128939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer } else { 129939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_mount_state = MINIX_VALID_FS; 130939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer } 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mark_buffer_dirty(sbi->s_sbh); 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(sbi->s_mount_state & MINIX_VALID_FS)) 13411b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko printk("MINIX-fs warning: remounting unchecked fs, " 13511b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko "running fsck is recommended\n"); 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if ((sbi->s_mount_state & MINIX_ERROR_FS)) 13711b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko printk("MINIX-fs warning: remounting fs with errors, " 13811b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko "running fsck is recommended\n"); 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int minix_fill_super(struct super_block *s, void *data, int silent) 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct buffer_head *bh; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct buffer_head **map; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_super_block *ms; 148939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer struct minix3_super_block *m3s = NULL; 149939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer unsigned long i, block; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inode *root_inode; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_sb_info *sbi; 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 153f8314dc60ccba7e41f425048c4160dc7f63377d5Panagiotis Issaris sbi = kzalloc(sizeof(struct minix_sb_info), GFP_KERNEL); 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sbi) 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->s_fs_info = sbi; 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1582ecd05ae68a903761e736e9e0aca40d6ace4319eAlexey Dobriyan BUILD_BUG_ON(32 != sizeof (struct minix_inode)); 1592ecd05ae68a903761e736e9e0aca40d6ace4319eAlexey Dobriyan BUILD_BUG_ON(64 != sizeof(struct minix2_inode)); 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!sb_set_blocksize(s, BLOCK_SIZE)) 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_bad_hblock; 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(bh = sb_bread(s, 1))) 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_bad_sb; 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ms = (struct minix_super_block *) bh->b_data; 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_ms = ms; 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_sbh = bh; 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_mount_state = ms->s_state; 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_ninodes = ms->s_ninodes; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_nzones = ms->s_nzones; 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_imap_blocks = ms->s_imap_blocks; 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_zmap_blocks = ms->s_zmap_blocks; 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_firstdatazone = ms->s_firstdatazone; 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_log_zone_size = ms->s_log_zone_size; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_max_size = ms->s_max_size; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->s_magic = ms->s_magic; 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (s->s_magic == MINIX_SUPER_MAGIC) { 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_version = MINIX_V1; 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_dirsize = 16; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_namelen = 14; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_link_max = MINIX_LINK_MAX; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (s->s_magic == MINIX_SUPER_MAGIC2) { 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_version = MINIX_V1; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_dirsize = 32; 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_namelen = 30; 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_link_max = MINIX_LINK_MAX; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (s->s_magic == MINIX2_SUPER_MAGIC) { 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_version = MINIX_V2; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_nzones = ms->s_zones; 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_dirsize = 16; 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_namelen = 14; 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_link_max = MINIX2_LINK_MAX; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (s->s_magic == MINIX2_SUPER_MAGIC2) { 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_version = MINIX_V2; 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_nzones = ms->s_zones; 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_dirsize = 32; 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_namelen = 30; 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_link_max = MINIX2_LINK_MAX; 201939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer } else if ( *(__u16 *)(bh->b_data + 24) == MINIX3_SUPER_MAGIC) { 202939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer m3s = (struct minix3_super_block *) bh->b_data; 203939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer s->s_magic = m3s->s_magic; 204939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_imap_blocks = m3s->s_imap_blocks; 205939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_zmap_blocks = m3s->s_zmap_blocks; 206939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_firstdatazone = m3s->s_firstdatazone; 207939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_log_zone_size = m3s->s_log_zone_size; 208939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_max_size = m3s->s_max_size; 209939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_ninodes = m3s->s_ninodes; 210939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_nzones = m3s->s_zones; 211939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_dirsize = 64; 212939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_namelen = 60; 213939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_version = MINIX_V3; 214939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_link_max = MINIX2_LINK_MAX; 215939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sbi->s_mount_state = MINIX_VALID_FS; 216939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer sb_set_blocksize(s, m3s->s_blocksize); 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_no_fs; 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Allocate the buffer map to keep the superblock small. 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 223f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwer if (sbi->s_imap_blocks == 0 || sbi->s_zmap_blocks == 0) 224f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwer goto out_illegal_sb; 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i = (sbi->s_imap_blocks + sbi->s_zmap_blocks) * sizeof(bh); 226f8314dc60ccba7e41f425048c4160dc7f63377d5Panagiotis Issaris map = kzalloc(i, GFP_KERNEL); 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!map) 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_no_map; 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_imap = &map[0]; 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sbi->s_zmap = &map[sbi->s_imap_blocks]; 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block=2; 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i=0 ; i < sbi->s_imap_blocks ; i++) { 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(sbi->s_imap[i]=sb_bread(s, block))) 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_no_bitmap; 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block++; 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i=0 ; i < sbi->s_zmap_blocks ; i++) { 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(sbi->s_zmap[i]=sb_bread(s, block))) 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_no_bitmap; 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block++; 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds minix_set_bit(0,sbi->s_imap[0]->b_data); 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds minix_set_bit(0,sbi->s_zmap[0]->b_data); 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set up enough so that it can read an inode */ 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->s_op = &minix_sops; 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds root_inode = iget(s, MINIX_ROOT_INO); 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!root_inode || is_bad_inode(root_inode)) 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_no_root; 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->s_root = d_alloc_root(root_inode); 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!s->s_root) 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_iput; 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!NO_TRUNCATE) 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->s_root->d_op = &minix_dentry_operations; 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(s->s_flags & MS_RDONLY)) { 261939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */ 262939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer ms->s_state &= ~MINIX_VALID_FS; 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mark_buffer_dirty(bh); 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(sbi->s_mount_state & MINIX_VALID_FS)) 26611b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko printk("MINIX-fs: mounting unchecked file system, " 26711b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko "running fsck is recommended\n"); 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (sbi->s_mount_state & MINIX_ERROR_FS) 26911b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko printk("MINIX-fs: mounting file system with errors, " 27011b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko "running fsck is recommended\n"); 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_iput: 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iput(root_inode); 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_freemap; 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_no_root: 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!silent) 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("MINIX-fs: get root inode failed\n"); 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_freemap; 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_no_bitmap: 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("MINIX-fs: bad superblock or unable to read bitmaps\n"); 284f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwerout_freemap: 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < sbi->s_imap_blocks; i++) 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse(sbi->s_imap[i]); 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < sbi->s_zmap_blocks; i++) 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse(sbi->s_zmap[i]); 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(sbi->s_imap); 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_release; 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_no_map: 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!silent) 29411b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko printk("MINIX-fs: can't allocate map\n"); 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_release; 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 297f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwerout_illegal_sb: 298f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwer if (!silent) 299f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwer printk("MINIX-fs: bad superblock\n"); 300f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwer goto out_release; 301f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwer 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_no_fs: 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!silent) 304939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer printk("VFS: Can't find a Minix filesystem V1 | V2 | V3 " 305939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer "on device %s.\n", s->s_id); 306f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwerout_release: 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse(bh); 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_bad_hblock: 31111b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko printk("MINIX-fs: blocksize too small for device\n"); 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_bad_sb: 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("MINIX-fs: unable to read superblock\n"); 316f5fb09fa3392ad43fbcfc2f4580752f383ab5996Andries Brouwerout: 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->s_fs_info = NULL; 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(sbi); 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 322726c334223180e3c0197cc980a432681370d4bafDavid Howellsstatic int minix_statfs(struct dentry *dentry, struct kstatfs *buf) 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 324726c334223180e3c0197cc980a432681370d4bafDavid Howells struct minix_sb_info *sbi = minix_sb(dentry->d_sb); 325726c334223180e3c0197cc980a432681370d4bafDavid Howells buf->f_type = dentry->d_sb->s_magic; 326726c334223180e3c0197cc980a432681370d4bafDavid Howells buf->f_bsize = dentry->d_sb->s_blocksize; 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->f_blocks = (sbi->s_nzones - sbi->s_firstdatazone) << sbi->s_log_zone_size; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->f_bfree = minix_count_free_blocks(sbi); 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->f_bavail = buf->f_bfree; 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->f_files = sbi->s_ninodes; 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->f_ffree = minix_count_free_inodes(sbi); 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf->f_namelen = sbi->s_namelen; 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int minix_get_block(struct inode *inode, sector_t block, 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct buffer_head *bh_result, int create) 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (INODE_VERSION(inode) == MINIX_V1) 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return V1_minix_get_block(inode, block, bh_result, create); 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return V2_minix_get_block(inode, block, bh_result, create); 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int minix_writepage(struct page *page, struct writeback_control *wbc) 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return block_write_full_page(page, minix_get_block, wbc); 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3494a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int minix_readpage(struct file *file, struct page *page) 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return block_read_full_page(page,minix_get_block); 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3544a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin 3554a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Pigginint __minix_write_begin(struct file *file, struct address_space *mapping, 3564a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin loff_t pos, unsigned len, unsigned flags, 3574a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin struct page **pagep, void **fsdata) 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3594a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata, 3604a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin minix_get_block); 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3624a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin 3634a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Pigginstatic int minix_write_begin(struct file *file, struct address_space *mapping, 3644a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin loff_t pos, unsigned len, unsigned flags, 3654a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin struct page **pagep, void **fsdata) 3664a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin{ 3674a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin *pagep = NULL; 3684a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin return __minix_write_begin(file, mapping, pos, len, flags, pagep, fsdata); 3694a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin} 3704a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic sector_t minix_bmap(struct address_space *mapping, sector_t block) 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return generic_block_bmap(mapping,block,minix_get_block); 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3754a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin 376f5e54d6e53a20cef45af7499e86164f0e0d16bb2Christoph Hellwigstatic const struct address_space_operations minix_aops = { 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .readpage = minix_readpage, 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .writepage = minix_writepage, 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .sync_page = block_sync_page, 3804a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin .write_begin = minix_write_begin, 3814a66af9eaa9531372cfcb9e20103ed147c729ff9Nick Piggin .write_end = generic_write_end, 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .bmap = minix_bmap 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38592e1d5be91a0e3ffa5c4697eeb09b2aa22792122Arjan van de Venstatic const struct inode_operations minix_symlink_inode_operations = { 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .readlink = generic_readlink, 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .follow_link = page_follow_link_light, 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .put_link = page_put_link, 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .getattr = minix_getattr, 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid minix_set_inode(struct inode *inode, dev_t rdev) 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (S_ISREG(inode->i_mode)) { 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_op = &minix_file_inode_operations; 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_fop = &minix_file_operations; 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_mapping->a_ops = &minix_aops; 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (S_ISDIR(inode->i_mode)) { 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_op = &minix_dir_inode_operations; 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_fop = &minix_dir_operations; 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_mapping->a_ops = &minix_aops; 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (S_ISLNK(inode->i_mode)) { 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_op = &minix_symlink_inode_operations; 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_mapping->a_ops = &minix_aops; 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_special_inode(inode, inode->i_mode, rdev); 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The minix V1 function to read an inode. 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void V1_minix_read_inode(struct inode * inode) 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct buffer_head * bh; 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_inode * raw_inode; 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_inode_info *minix_inode = minix_i(inode); 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode = minix_V1_raw_inode(inode->i_sb, inode->i_ino, &bh); 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!raw_inode) { 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds make_bad_inode(inode); 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_mode = raw_inode->i_mode; 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_uid = (uid_t)raw_inode->i_uid; 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_gid = (gid_t)raw_inode->i_gid; 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_nlink = raw_inode->i_nlinks; 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_size = raw_inode->i_size; 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec = raw_inode->i_time; 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_mtime.tv_nsec = 0; 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_atime.tv_nsec = 0; 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_ctime.tv_nsec = 0; 433ba52de123d454b57369f291348266d86f4b35070Theodore Ts'o inode->i_blocks = 0; 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 9; i++) 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds minix_inode->u.i1_data[i] = raw_inode->i_zone[i]; 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds minix_set_inode(inode, old_decode_dev(raw_inode->i_zone[0])); 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse(bh); 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The minix V2 function to read an inode. 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void V2_minix_read_inode(struct inode * inode) 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct buffer_head * bh; 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix2_inode * raw_inode; 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_inode_info *minix_inode = minix_i(inode); 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh); 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!raw_inode) { 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds make_bad_inode(inode); 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_mode = raw_inode->i_mode; 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_uid = (uid_t)raw_inode->i_uid; 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_gid = (gid_t)raw_inode->i_gid; 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_nlink = raw_inode->i_nlinks; 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_size = raw_inode->i_size; 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_mtime.tv_sec = raw_inode->i_mtime; 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_atime.tv_sec = raw_inode->i_atime; 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_ctime.tv_sec = raw_inode->i_ctime; 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_mtime.tv_nsec = 0; 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_atime.tv_nsec = 0; 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_ctime.tv_nsec = 0; 466ba52de123d454b57369f291348266d86f4b35070Theodore Ts'o inode->i_blocks = 0; 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 10; i++) 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds minix_inode->u.i2_data[i] = raw_inode->i_zone[i]; 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds minix_set_inode(inode, old_decode_dev(raw_inode->i_zone[0])); 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse(bh); 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The global function to read an inode. 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void minix_read_inode(struct inode * inode) 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (INODE_VERSION(inode) == MINIX_V1) 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds V1_minix_read_inode(inode); 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds V2_minix_read_inode(inode); 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The minix V1 function to synchronize an inode. 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct buffer_head * V1_minix_update_inode(struct inode * inode) 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct buffer_head * bh; 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_inode * raw_inode; 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_inode_info *minix_inode = minix_i(inode); 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode = minix_V1_raw_inode(inode->i_sb, inode->i_ino, &bh); 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!raw_inode) 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_mode = inode->i_mode; 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_uid = fs_high2lowuid(inode->i_uid); 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_gid = fs_high2lowgid(inode->i_gid); 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_nlinks = inode->i_nlink; 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_size = inode->i_size; 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_time = inode->i_mtime.tv_sec; 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_zone[0] = old_encode_dev(inode->i_rdev); 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else for (i = 0; i < 9; i++) 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_zone[i] = minix_inode->u.i1_data[i]; 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mark_buffer_dirty(bh); 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return bh; 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The minix V2 function to synchronize an inode. 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct buffer_head * V2_minix_update_inode(struct inode * inode) 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct buffer_head * bh; 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix2_inode * raw_inode; 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct minix_inode_info *minix_inode = minix_i(inode); 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh); 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!raw_inode) 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_mode = inode->i_mode; 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_uid = fs_high2lowuid(inode->i_uid); 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_gid = fs_high2lowgid(inode->i_gid); 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_nlinks = inode->i_nlink; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_size = inode->i_size; 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_mtime = inode->i_mtime.tv_sec; 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_atime = inode->i_atime.tv_sec; 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_ctime = inode->i_ctime.tv_sec; 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_zone[0] = old_encode_dev(inode->i_rdev); 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else for (i = 0; i < 10; i++) 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds raw_inode->i_zone[i] = minix_inode->u.i2_data[i]; 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mark_buffer_dirty(bh); 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return bh; 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct buffer_head *minix_update_inode(struct inode *inode) 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (INODE_VERSION(inode) == MINIX_V1) 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return V1_minix_update_inode(inode); 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return V2_minix_update_inode(inode); 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int minix_write_inode(struct inode * inode, int wait) 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse(minix_update_inode(inode)); 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint minix_sync_inode(struct inode * inode) 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = 0; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct buffer_head *bh; 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds bh = minix_update_inode(inode); 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bh && buffer_dirty(bh)) 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sync_dirty_buffer(bh); 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (buffer_req(bh) && !buffer_uptodate(bh)) 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 56511b8448751ba114416c63899638a8e473ebd21e7Denis Vlasenko printk("IO error syncing minix inode [%s:%08lx]\n", 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inode->i_sb->s_id, inode->i_ino); 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -1; 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (!bh) 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -1; 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds brelse (bh); 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint minix_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 578939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer struct inode *dir = dentry->d_parent->d_inode; 579939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer struct super_block *sb = dir->i_sb; 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds generic_fillattr(dentry->d_inode, stat); 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (INODE_VERSION(dentry->d_inode) == MINIX_V1) 582939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb); 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 584939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer stat->blocks = (sb->s_blocksize / 512) * V2_minix_blocks(stat->size, sb); 585939b00df0306bc4b5cd25c3c3c78e89b91e72fc8Andries Brouwer stat->blksize = sb->s_blocksize; 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The function that is called for file truncation. 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid minix_truncate(struct inode * inode) 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))) 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (INODE_VERSION(inode) == MINIX_V1) 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds V1_minix_truncate(inode); 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds V2_minix_truncate(inode); 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 602454e2398be9b9fa30433fccc548db34d19aa9958David Howellsstatic int minix_get_sb(struct file_system_type *fs_type, 603454e2398be9b9fa30433fccc548db34d19aa9958David Howells int flags, const char *dev_name, void *data, struct vfsmount *mnt) 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 605454e2398be9b9fa30433fccc548db34d19aa9958David Howells return get_sb_bdev(fs_type, flags, dev_name, data, minix_fill_super, 606454e2398be9b9fa30433fccc548db34d19aa9958David Howells mnt); 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct file_system_type minix_fs_type = { 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .owner = THIS_MODULE, 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "minix", 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_sb = minix_get_sb, 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .kill_sb = kill_block_super, 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .fs_flags = FS_REQUIRES_DEV, 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init_minix_fs(void) 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = init_inodecache(); 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out1; 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = register_filesystem(&minix_fs_type); 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds destroy_inodecache(); 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout1: 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit exit_minix_fs(void) 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unregister_filesystem(&minix_fs_type); 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds destroy_inodecache(); 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(init_minix_fs) 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(exit_minix_fs) 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 642