[Libsysio-commit] RedStorm: libsysio/drivers/incore fs_incore.c

[Lee W. <lw...@us...>]

Update of /cvsroot/libsysio/libsysio/drivers/incore
In directory sc8-pr-cvs1:/tmp/cvs-serv15049/drivers/incore

Modified Files:
      Tag: RedStorm
	fs_incore.c 
Log Message:


Updated with recent changes in HEAD branch.


Index: fs_incore.c
===================================================================
RCS file: /cvsroot/libsysio/libsysio/drivers/incore/fs_incore.c,v
retrieving revision 1.4.4.3
retrieving revision 1.4.4.4
diff -u -w -b -B -p -r1.4.4.3 -r1.4.4.4
--- fs_incore.c	26 Sep 2003 21:28:33 -0000	1.4.4.3
+++ fs_incore.c	27 Sep 2003 20:20:40 -0000	1.4.4.4
@@ -139,7 +139,9 @@ static int _sysio_incore_dirop_mkdir(str
 static int _sysio_incore_dirop_rmdir(struct pnode *pno);
 static int _sysio_incore_inop_open(struct pnode *pno, int flags, mode_t mode);
 static int _sysio_incore_inop_close(struct inode *ino);
+static int _sysio_incore_dirop_link(struct pnode *old, struct pnode *new);
 static int _sysio_incore_dirop_unlink(struct pnode *pno);
+static int _sysio_incore_dirop_rename(struct pnode *old, struct pnode *new);
 static int _sysio_incore_filop_ipreadv(struct inode *ino,
 				      struct io_arguments *ioargs,
 				      struct ioctx **ioctxp);
@@ -160,7 +162,6 @@ static int _sysio_incore_inop_statvfs(st
 #endif
 static void _sysio_incore_inop_gone(struct inode *ino);
 static int _sysio_incore_e_isdir(void);
-static int _sysio_incore_e_notdir(void);
 static int _sysio_incore_e_inval(void);
 static int _sysio_incore_e_nosys(void);
 static void _sysio_incore_illop(void);
@@ -197,7 +198,9 @@ static struct inode_ops _sysio_incore_di
 	_sysio_incore_dirop_readlink,
 	_sysio_incore_inop_open,
 	_sysio_incore_inop_close,
+	_sysio_incore_dirop_link,
 	_sysio_incore_dirop_unlink,
+	_sysio_incore_dirop_rename,
 	_sysio_incore_dirop_ipreadv,
 	_sysio_incore_dirop_ipwritev,
 	_sysio_incore_dirop_iodone,
@@ -216,24 +219,28 @@ static struct inode_ops _sysio_incore_di
 	(int (*)(struct pnode *, \
 		 struct inode **, \
 		 struct intent *, \
-		 const char *))_sysio_incore_e_notdir
+		 const char *))_sysio_incore_illop
 #define _sysio_incore_filop_getdirentries \
 	(ssize_t (*)(struct inode *, \
 		 char *, \
 		 size_t, \
-		 _SYSIO_OFF_T *))_sysio_incore_e_notdir
+		 _SYSIO_OFF_T *))_sysio_incore_illop
 #define _sysio_incore_filop_mkdir \
-	(int (*)(struct pnode *, mode_t))_sysio_incore_e_notdir
+	(int (*)(struct pnode *, mode_t))_sysio_incore_illop
 #define _sysio_incore_filop_rmdir \
-	(int (*)(struct pnode *))_sysio_incore_e_notdir
+	(int (*)(struct pnode *))_sysio_incore_illop
 #define _sysio_incore_filop_symlink \
 	(int (*)(struct pnode *, const char *))_sysio_incore_illop
 #define _sysio_incore_symlinkop_readlink \
 	(int (*)(struct pnode *, char *, size_t))_sysio_incore_illop
+#define _sysio_incore_filop_link \
+	(int (*)(struct pnode *old, struct pnode *new))_sysio_incore_illop
 #define _sysio_incore_filop_unlink \
-	(int (*)(struct pnode *pno))_sysio_incore_e_notdir
+	(int (*)(struct pnode *pno))_sysio_incore_illop
+#define _sysio_incore_filop_rename \
+	(int (*)(struct pnode *old, struct pnode *new))_sysio_incore_illop
 #define _sysio_incore_filop_mknod \
-	(int (*)(struct pnode *pno, mode_t, dev_t))_sysio_incore_e_notdir
+	(int (*)(struct pnode *pno, mode_t, dev_t))_sysio_incore_illop
 
 static struct inode_ops _sysio_incore_file_ops = {
 	_sysio_incore_filop_lookup,
@@ -246,7 +253,9 @@ static struct inode_ops _sysio_incore_fi
 	_sysio_incore_symlinkop_readlink,
 	_sysio_incore_inop_open,
 	_sysio_incore_inop_close,
+	_sysio_incore_filop_link,
 	_sysio_incore_filop_unlink,
+	_sysio_incore_filop_rename,
 	_sysio_incore_filop_ipreadv,
 	_sysio_incore_filop_ipwritev,
 	_sysio_incore_filop_iodone,
@@ -272,7 +281,9 @@ static struct inode_ops _sysio_incore_de
 	_sysio_incore_symlinkop_readlink,
 	_sysio_nodev_inop_open,
 	_sysio_nodev_inop_close,
+	_sysio_incore_filop_link,
 	_sysio_incore_filop_unlink,
+	_sysio_incore_filop_rename,
 	_sysio_nodev_inop_ipreadv,
 	_sysio_nodev_inop_ipwritev,
 	_sysio_nodev_inop_iodone,
@@ -319,7 +330,7 @@ struct lookup_data {
  */
 #define INCORE_D_RECLEN(namlen) \
 	(((size_t )&((struct intnl_dirent *)0)->d_name + \
-	  (namlen) + sizeof(void *)) & \
+	  (namlen) + 1 + sizeof(void *)) & \
 	 ~(sizeof(void *) - 1))
 
 /*
@@ -369,17 +380,20 @@ _sysio_incore_init()
 #ifdef _DIRENT_HAVE_D_NAMLEN
 	de->d_namlen = 1;
 #endif
+	/*
+	 * Move to entry for `..'
+	 */
 	de = (void *)de + off;
 	de->d_reclen = INCORE_D_RECLEN(2);
+#ifdef _DIRENT_HAVE_D_NAMLEN
+	de->d_namlen = 2;
+#endif
 #ifdef _DIRENT_HAVE_D_OFF
 	de->d_off =
 #endif
 	    off += de->d_reclen;
 	de->d_type = INCORE_D_TYPEOF(S_IFDIR);
 	de->d_name[0] = de->d_name[1] = '.';
-#ifdef _DIRENT_HAVE_D_NAMLEN
-	de->d_namlen = 2;
-#endif
 
 	return _sysio_fssw_register("incore", &incore_fssw_ops);
 }
@@ -764,8 +778,7 @@ incore_directory_match(struct intnl_dire
 #ifdef _DIRENT_HAVE_D_NAMLEN
 	    ld->name->len == de->d_namlen &&
 #endif
-	    strncmp(de->d_name, ld->name->name, ld->name->len) == 0
-	   )
+	    strncmp(de->d_name, ld->name->name, ld->name->len) == 0)
 		return de;
 	ld->de = de;
 	return NULL;
@@ -1220,6 +1233,12 @@ incore_unlink_entry(struct incore_inode 
 	lookup_data.de->d_off = off;
 #endif
 
+	/*
+	 * Adjust link count.
+	 */
+	assert(icino->ici_st.st_nlink > 2);
+	icino->ici_st.st_nlink--;
+
 	return 0;
 }
 
@@ -1251,6 +1270,12 @@ _sysio_incore_dirop_rmdir(struct pnode *
 		return err;
 	I_RELE(ino);
 
+	/*
+	 * Adjust link count.
+	 */
+	assert(icino->ici_st.st_nlink > 2);
+	icino->ici_st.st_nlink--;
+
 	return 0;
 }
 
@@ -1348,6 +1373,94 @@ _sysio_incore_inop_close(struct inode *i
 }
 
 static int
+_sysio_incore_dirop_link(struct pnode *old, struct pnode *new)
+{
+	struct incore_inode *icino = I2IC(old->p_base->pb_ino);
+	int	err;
+
+	assert(!new->p_base->pb_ino);
+	assert(!S_ISDIR(old->p_base->pb_ino->i_mode));
+
+	/*
+	 * Can bump the link count?
+	 */
+	if (!(icino->ici_st.st_nlink + 1))
+		return -EMLINK;
+	/*
+	 * Insert into parent.
+	 */
+	err =
+	    incore_directory_insert(I2IC(new->p_parent->p_base->pb_ino),
+				    &new->p_base->pb_name,
+				    icino->ici_st.st_ino,
+				    INCORE_D_TYPEOF(icino->ici_st.st_mode));
+	if (err)
+		return err;
+	/*
+	 * Bump the link count.
+	 */
+	icino->ici_st.st_nlink++;
+
+	return 0;
+}
+
+static int
+_sysio_incore_dirop_rename(struct pnode *old, struct pnode *new)
+{
+	int	err;
+	struct incore_inode *icino = I2IC(old->p_base->pb_ino);
+
+	if (new->p_base->pb_ino) {
+		/*
+		 * Have to kill off the target first.
+		 */
+		if (S_ISDIR(I2IC(new->p_base->pb_ino)->ici_st.st_mode) &&
+		    I2IC(new->p_base->pb_ino)->ici_st.st_nlink > 2)
+			return -ENOTEMPTY;
+		err =
+		    incore_unlink_entry(I2IC(new->p_parent->p_base->pb_ino),
+					&new->p_base->pb_name);
+		if (err)
+			return err;
+		I_RELE(new->p_base->pb_ino);
+		_sysio_i_gone(new->p_base->pb_ino);
+		new->p_base->pb_ino = NULL;
+	}
+
+	/*
+	 * Insert into new parent.
+	 */
+	err =
+	    incore_directory_insert(I2IC(new->p_parent->p_base->pb_ino),
+				    &new->p_base->pb_name,
+				    icino->ici_st.st_ino,
+				    INCORE_D_TYPEOF(icino->ici_st.st_mode));
+	if (err)
+		abort();
+	/*
+	 * Remove from the old parent.
+	 */
+	err =
+	    incore_unlink_entry(I2IC(old->p_parent->p_base->pb_ino),
+				&old->p_base->pb_name);
+	if (err)
+		abort();
+
+	if (S_ISDIR(icino->ici_st.st_mode)) {
+		struct intnl_dirent *de;
+
+		/*
+		 * We moved a directory. The entry for `..' must be corrected.
+		 */
+		de = icino->ici_data;
+		de++;
+		assert(strcmp(de->d_name, "..") == 0);
+		de->d_ino = I2IC(new->p_parent->p_base->pb_ino)->ici_st.st_ino;
+	}
+	return 0;
+}
+
+static int
 _sysio_incore_dirop_unlink(struct pnode *pno)
 {
 	struct inode *ino = pno->p_base->pb_ino;
@@ -1357,7 +1470,6 @@ _sysio_incore_dirop_unlink(struct pnode 
 	if (S_ISDIR(icino->ici_st.st_mode))
 		return -EISDIR;
 
-	pno->p_base->pb_ino = NULL;
 	err =
 	    incore_unlink_entry(I2IC(pno->p_parent->p_base->pb_ino),
 				&pno->p_base->pb_name);
@@ -1579,7 +1691,8 @@ _sysio_incore_inop_statvfs(struct pnode 
 	 */
 	buf->f_bsize = fs->fs_bsize;
 	buf->f_frsize = buf->f_bsize;
-	buf->f_blocks = (0xffffffffffffffff - 1) / buf->f_bsize;
+	buf->f_blocks = ~0;
+	buf->f_blocks /= buf->f_bsize;
 	buf->f_bfree = buf->f_blocks - 1;
 	buf->f_bavail = buf->f_bfree;
 	buf->f_files = buf->f_blocks;
@@ -1606,13 +1719,6 @@ _sysio_incore_e_isdir(void)
 {
 
 	return -EISDIR;
-}
-
-static int
-_sysio_incore_e_notdir(void)
-{
-
-	return -ENOTDIR;
 }
 
 static int