[JFFS2] Remove support for virtual blocks
[linux-2.6-microblaze.git] / fs / jffs2 / write.c
index 32c1efa..0a19475 100644 (file)
@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: write.c,v 1.88 2005/01/24 21:13:39 hammache Exp $
+ * $Id: write.c,v 1.95 2005/08/17 13:46:23 dedekind Exp $
  *
  */
 
@@ -35,13 +35,12 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint
        f->inocache = ic;
        f->inocache->nlink = 1;
        f->inocache->nodes = (struct jffs2_raw_node_ref *)f->inocache;
-       f->inocache->ino = ++c->highest_ino;
        f->inocache->state = INO_STATE_PRESENT;
 
-       ri->ino = cpu_to_je32(f->inocache->ino);
 
-       D1(printk(KERN_DEBUG "jffs2_do_new_inode(): Assigned ino# %d\n", f->inocache->ino));
        jffs2_add_ino_cache(c, f->inocache);
+       D1(printk(KERN_DEBUG "jffs2_do_new_inode(): Assigned ino# %d\n", f->inocache->ino));
+       ri->ino = cpu_to_je32(f->inocache->ino);
 
        ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
        ri->nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
@@ -55,34 +54,6 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint
        return 0;
 }
 
-#if CONFIG_JFFS2_FS_DEBUG > 0
-static void writecheck(struct jffs2_sb_info *c, uint32_t ofs)
-{
-       unsigned char buf[16];
-       size_t retlen;
-       int ret, i;
-
-       ret = jffs2_flash_read(c, ofs, 16, &retlen, buf);
-       if (ret || (retlen != 16)) {
-               D1(printk(KERN_DEBUG "read failed or short in writecheck(). ret %d, retlen %zd\n", ret, retlen));
-               return;
-       }
-       ret = 0;
-       for (i=0; i<16; i++) {
-               if (buf[i] != 0xff)
-                       ret = 1;
-       }
-       if (ret) {
-               printk(KERN_WARNING "ARGH. About to write node to 0x%08x on flash, but there are data already there:\n", ofs);
-               printk(KERN_WARNING "0x%08x: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", 
-                      ofs,
-                      buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7],
-                      buf[8], buf[9], buf[10], buf[11], buf[12], buf[13], buf[14], buf[15]);
-       }
-}
-#endif
-
-
 /* jffs2_write_dnode - given a raw_inode, allocate a full_dnode for it, 
    write it to the flash, link it into the existing inode/fragment list */
 
@@ -107,7 +78,7 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
        vecs[1].iov_base = (unsigned char *)data;
        vecs[1].iov_len = datalen;
 
-       D1(writecheck(c, flash_ofs));
+       jffs2_dbg_prewrite_paranoia_check(c, flash_ofs, vecs[0].iov_len + vecs[1].iov_len);
 
        if (je32_to_cpu(ri->totlen) != sizeof(*ri) + datalen) {
                printk(KERN_WARNING "jffs2_write_dnode: ri->totlen (0x%08x) != sizeof(*ri) (0x%08zx) + datalen (0x%08x)\n", je32_to_cpu(ri->totlen), sizeof(*ri), datalen);
@@ -136,19 +107,13 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
        raw->__totlen = PAD(sizeof(*ri)+datalen);
        raw->next_phys = NULL;
 
-       if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(ri->version) < f->highest_version))
-       {
-               if (! retried)
-               {
-                       BUG();
-               }
-               else
-               {
-                       D1(printk(KERN_DEBUG "jffs2_write_dnode : dnode_version %d,  highest version %d -> updating dnode\n", 
-                                            je32_to_cpu(ri->version), f->highest_version));
-                       ri->version = cpu_to_je32(++f->highest_version);
-                       ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
-               }
+       if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(ri->version) < f->highest_version)) {
+               BUG_ON(!retried);
+               D1(printk(KERN_DEBUG "jffs2_write_dnode : dnode_version %d, "
+                               "highest version %d -> updating dnode\n", 
+                               je32_to_cpu(ri->version), f->highest_version));
+               ri->version = cpu_to_je32(++f->highest_version);
+               ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
        }
 
        ret = jffs2_flash_writev(c, vecs, cnt, flash_ofs, &retlen,
@@ -184,8 +149,8 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 
                        D1(printk(KERN_DEBUG "Retrying failed write.\n"));
                        
-                       ACCT_SANITY_CHECK(c,jeb);
-                       D1(ACCT_PARANOIA_CHECK(jeb));
+                       jffs2_dbg_acct_sanity_check(c,jeb);
+                       jffs2_dbg_acct_paranoia_check(c, jeb);
 
                        if (alloc_mode == ALLOC_GC) {
                                ret = jffs2_reserve_space_gc(c, sizeof(*ri) + datalen, &flash_ofs, &dummy);
@@ -201,8 +166,8 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
                        if (!ret) {
                                D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs));
 
-                               ACCT_SANITY_CHECK(c,jeb);
-                               D1(ACCT_PARANOIA_CHECK(jeb));
+                               jffs2_dbg_acct_sanity_check(c,jeb);
+                               jffs2_dbg_acct_paranoia_check(c, jeb);
 
                                goto retry;
                        }
@@ -239,7 +204,7 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
                  je32_to_cpu(ri->data_crc), je32_to_cpu(ri->totlen)));
 
        if (retried) {
-               ACCT_SANITY_CHECK(c,NULL);
+               jffs2_dbg_acct_sanity_check(c,NULL);
        }
 
        return fn;
@@ -257,7 +222,6 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
        D1(printk(KERN_DEBUG "jffs2_write_dirent(ino #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x)\n", 
                  je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino),
                  je32_to_cpu(rd->name_crc)));
-       D1(writecheck(c, flash_ofs));
 
        D1(if(je32_to_cpu(rd->hdr_crc) != crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)) {
                printk(KERN_CRIT "Eep. CRC not correct in jffs2_write_dirent()\n");
@@ -270,6 +234,8 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
        vecs[1].iov_base = (unsigned char *)name;
        vecs[1].iov_len = namelen;
        
+       jffs2_dbg_prewrite_paranoia_check(c, flash_ofs, vecs[0].iov_len + vecs[1].iov_len);
+
        raw = jffs2_alloc_raw_node_ref();
 
        if (!raw)
@@ -295,20 +261,14 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
        raw->__totlen = PAD(sizeof(*rd)+namelen);
        raw->next_phys = NULL;
 
-       if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(rd->version) < f->highest_version))
-       {
-               if (! retried)
-               {
-                       BUG();
-               }
-               else
-               {
-                       D1(printk(KERN_DEBUG "jffs2_write_dirent : dirent_version %d,  highest version %d -> updating dirent\n", 
-                                            je32_to_cpu(rd->version), f->highest_version));
-                       rd->version = cpu_to_je32(++f->highest_version);
-                       fd->version = je32_to_cpu(rd->version);
-                       rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
-               }
+       if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(rd->version) < f->highest_version)) {
+               BUG_ON(!retried);
+               D1(printk(KERN_DEBUG "jffs2_write_dirent : dirent_version %d, "
+                                    "highest version %d -> updating dirent\n",
+                                    je32_to_cpu(rd->version), f->highest_version));
+               rd->version = cpu_to_je32(++f->highest_version);
+               fd->version = je32_to_cpu(rd->version);
+               rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
        }
 
        ret = jffs2_flash_writev(c, vecs, 2, flash_ofs, &retlen,
@@ -335,8 +295,8 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 
                        D1(printk(KERN_DEBUG "Retrying failed write.\n"));
 
-                       ACCT_SANITY_CHECK(c,jeb);
-                       D1(ACCT_PARANOIA_CHECK(jeb));
+                       jffs2_dbg_acct_sanity_check(c,jeb);
+                       jffs2_dbg_acct_paranoia_check(c, jeb);
 
                        if (alloc_mode == ALLOC_GC) {
                                ret = jffs2_reserve_space_gc(c, sizeof(*rd) + namelen, &flash_ofs, &dummy);
@@ -351,8 +311,8 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 
                        if (!ret) {
                                D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs));
-                               ACCT_SANITY_CHECK(c,jeb);
-                               D1(ACCT_PARANOIA_CHECK(jeb));
+                               jffs2_dbg_acct_sanity_check(c,jeb);
+                               jffs2_dbg_acct_paranoia_check(c, jeb);
                                goto retry;
                        }
                        D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret));
@@ -372,7 +332,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
        spin_unlock(&c->erase_completion_lock);
 
        if (retried) {
-               ACCT_SANITY_CHECK(c,NULL);
+               jffs2_dbg_acct_sanity_check(c,NULL);
        }
 
        return fd;
@@ -573,7 +533,8 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
 
 
 int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
-                   const char *name, int namelen, struct jffs2_inode_info *dead_f)
+                   const char *name, int namelen, struct jffs2_inode_info *dead_f,
+                   uint32_t time)
 {
        struct jffs2_raw_dirent *rd;
        struct jffs2_full_dirent *fd;
@@ -605,7 +566,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
                rd->pino = cpu_to_je32(dir_f->inocache->ino);
                rd->version = cpu_to_je32(++dir_f->highest_version);
                rd->ino = cpu_to_je32(0);
-               rd->mctime = cpu_to_je32(get_seconds());
+               rd->mctime = cpu_to_je32(time);
                rd->nsize = namelen;
                rd->type = DT_UNKNOWN;
                rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
@@ -656,20 +617,23 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 
                down(&dead_f->sem);
 
-               while (dead_f->dents) {
-                       /* There can be only deleted ones */
-                       fd = dead_f->dents;
-                       
-                       dead_f->dents = fd->next;
-                       
-                       if (fd->ino) {
-                               printk(KERN_WARNING "Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
-                                      dead_f->inocache->ino, fd->name, fd->ino);
-                       } else {
-                               D1(printk(KERN_DEBUG "Removing deletion dirent for \"%s\" from dir ino #%u\n", fd->name, dead_f->inocache->ino));
+               if (S_ISDIR(OFNI_EDONI_2SFFJ(dead_f)->i_mode)) {
+                       while (dead_f->dents) {
+                               /* There can be only deleted ones */
+                               fd = dead_f->dents;
+                               
+                               dead_f->dents = fd->next;
+                               
+                               if (fd->ino) {
+                                       printk(KERN_WARNING "Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
+                                              dead_f->inocache->ino, fd->name, fd->ino);
+                               } else {
+                                       D1(printk(KERN_DEBUG "Removing deletion dirent for \"%s\" from dir ino #%u\n",
+                                               fd->name, dead_f->inocache->ino));
+                               }
+                               jffs2_mark_node_obsolete(c, fd->raw);
+                               jffs2_free_full_dirent(fd);
                        }
-                       jffs2_mark_node_obsolete(c, fd->raw);
-                       jffs2_free_full_dirent(fd);
                }
 
                dead_f->inocache->nlink--;
@@ -683,7 +647,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 }
 
 
-int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen)
+int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen, uint32_t time)
 {
        struct jffs2_raw_dirent *rd;
        struct jffs2_full_dirent *fd;
@@ -711,7 +675,7 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
        rd->pino = cpu_to_je32(dir_f->inocache->ino);
        rd->version = cpu_to_je32(++dir_f->highest_version);
        rd->ino = cpu_to_je32(ino);
-       rd->mctime = cpu_to_je32(get_seconds());
+       rd->mctime = cpu_to_je32(time);
        rd->nsize = namelen;
 
        rd->type = type;