--- /dev/null
+#include <../obd/linux/sym_obd.h>
+
+
+struct obdfs_sb_info {
+ struct obd_conn_info osi_conn_info;
+ struct super_block *osi_super;
+ int osi_obd_minor;
+};
+
+
+
+void obdfs_sysctl_init(void);
+void obdfs_sysctl_clean(void);
+
+struct obdfs_inode_info;
+
+#define OBDFS_SUPER_MAGIC 0x4711
#include <linux/fs.h>
#include <linux/ext2_fs.h>
+#include <linux/malloc.h>
+#include <linux/vmalloc.h>
#define SYM_OBD_DEBUG
} while (0)
+#define MAX_DEVICES 128
+struct obd_conn_info {
+ unsigned int conn_id;
+ unsigned long conn_ino;
+ unsigned long conn_blocksize;
+ unsigned char conn_blocksize_bits;
+};
+
+struct obd_device {
+ int refcnt;
+ struct super_block * sb;
+ unsigned int last_id;
+ unsigned long prealloc_quota;
+ struct list_head clients;
+};
+
+struct obd_client {
+ struct list_head cli_chain;
+ kdev_t minor;
+ unsigned int cli_id;
+ unsigned long cli_prealloc_quota;
+ struct list_head cli_prealloc_inodes;
+};
+
+struct obd_prealloc_inode {
+ struct list_head obd_prealloc_chain;
+ unsigned long inode;
+};
+
/*
* ioctl commands
*/
-struct ioc_prealloc {
- long alloc; /* user sets it to the number of inodes requesting to be
- * preallocated. kernel sets it to the actual number of
- * succesfully preallocate inodes */
+struct oic_prealloc_s {
+ unsigned long cli_id;
+ unsigned long alloc; /* user sets it to the number of inodes requesting
+ * to be preallocated. kernel sets it to the actual number
+ * of succesfully preallocated inodes */
long inodes[32]; /* actual inode numbers */
};
+struct oic_attr_s {
+ unsigned int conn_id;
+ unsigned long inode;
-#define OBD_IOC_CREATE _IOR('f', 3, long)
-#define OBD_IOC_SETUP _IOW('f', 4, long)
-#define OBD_IOC_SYNC _IOR('f', 5, long)
-#define OBD_IOC_DESTROY _IOW('f', 6, long)
+ struct iattr iattr;
+};
+struct oic_rw_s {
+ unsigned int conn_id;
+ unsigned long inode;
+ char * buf;
+ unsigned long count;
+ loff_t offset;
+};
-#define OBD_IOC_DEC_USE_COUNT _IO('f', 8)
-#define OBD_IOC_SETATTR _IOR('f', 9, long)
-#define OBD_IOC_READ _IOWR('f', 10, long)
+#define OBD_IOC_CREATE _IOR ('f', 3, long)
+#define OBD_IOC_SETUP _IOW ('f', 4, long)
+#define OBD_IOC_SYNC _IOR ('f', 5, long)
+#define OBD_IOC_DESTROY _IOW ('f', 6, long)
+#define OBD_IOC_PREALLOCATE _IOWR('f', 7, long)
+#define OBD_IOC_DEC_USE_COUNT _IO ('f', 8 )
+#define OBD_IOC_SETATTR _IOW ('f', 9, long)
+#define OBD_IOC_GETATTR _IOR ('f', 10, long)
+#define OBD_IOC_READ _IOWR('f', 11, long)
+#define OBD_IOC_WRITE _IOWR('f', 12, long)
+#define OBD_IOC_CONNECT _IOR ('f', 13, long)
+#define OBD_IOC_DISCONNECT _IOW ('f', 14, long)
+#define OBD_IOC_STATFS _IOWR('f', 15, long)
+#define OBD_IOC_DEC_FS_USE_COUNT _IO ('f', 16 )
/* balloc.c */
int ext2_new_block (const struct inode * inode, unsigned long goal,
int * err);
extern unsigned long ext2_count_free_inodes (struct super_block * sb);
extern void ext2_check_inodes_bitmap (struct super_block * sb);
+extern int load_inode_bitmap (struct super_block * sb,
+ unsigned int block_group);
/* inode.c */
void obd_read_inode (struct inode * inode);
/* interface.c */
extern int obd_create (struct super_block * sb, int inode_hint, int * err);
extern void obd_unlink (struct inode * inode);
+extern struct obd_client * obd_client(int cli_id);
+extern void obd_cleanup_client (struct obd_device * obddev,
+ struct obd_client * cli);
+void obd_cleanup_device(int dev);
+long obd_preallocate_inodes(unsigned int conn_id,
+ int req, long inodes[32], int * err);
+long obd_preallocate_quota(struct super_block * sb, struct obd_client * cli,
+ unsigned long req, int * err);
+int obd_connect (int minor, struct obd_conn_info * conninfo);
+int obd_disconnect (unsigned int conn_id);
+int obd_setattr(unsigned int conn_id, unsigned long ino, struct iattr * iattr);
+int obd_getattr(unsigned int conn_id, unsigned long ino, struct iattr * iattr);
+int obd_destroy(unsigned int conn_id, unsigned long ino);
+int obd_statfs(unsigned int conn_id, struct statfs * statfs);
+unsigned long obd_read(unsigned int conn_id, unsigned long ino, char * buf,
+ unsigned long count, loff_t offset, int * err);
+unsigned long obd_write (unsigned int conn_id, unsigned long ino, char * buf,
+ unsigned long count, loff_t offset, int * err);
/* ioctl.c */
-struct oic_setattr_s {
- unsigned long inode;
- struct iattr iattr;
-};
-struct oic_read_s {
- unsigned long inode;
- char * buf;
- unsigned long count;
- loff_t offset;
-};
int obd_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
unsigned long arg);
extern struct file_operations ext2_file_operations;
extern struct inode_operations ext2_file_inode_operations;
+/* super.c */
+extern struct super_operations ext2_sops;
+
#endif /* __LINUX_SYM_OBD_H */
defined(&OBD_IOC_SYNC);
eval 'sub OBD_IOC_DESTROY () { &_IOC(1, ord(\'f\'), 6, 4);}' unless
defined(&OBD_IOC_DESTROY);
+eval 'sub OBD_IOC_PREALLOCATE () { &_IOC(3, ord(\'f\'), 7, 4);}' unless
+ defined(&OBD_IOC_PREALLOCATE);
eval 'sub OBD_IOC_DEC_USE_COUNT () { &_IOC(0, ord(\'f\'), 8, 0);}' unless
defined(&OBD_IOC_DEC_USE_COUNT);
-eval 'sub OBD_IOC_READ () { &_IOC(3, ord(\'f\'), 10, 4);}' unless
+eval 'sub OBD_IOC_SETATTR () { &_IOC(1, ord(\'f\'), 9, 4);}' unless
+ defined(&OBD_IOC_SETATTR);
+eval 'sub OBD_IOC_GETATTR () { &_IOC(2, ord(\'f\'), 10, 4);}' unless
+ defined(&OBD_IOC_GETATTR);
+eval 'sub OBD_IOC_READ () { &_IOC(3, ord(\'f\'), 11, 4);}' unless
defined(&OBD_IOC_READ);
+eval 'sub OBD_IOC_WRITE () { &_IOC(3, ord(\'f\'), 12, 4);}' unless
+ defined(&OBD_IOC_WRITE);
+eval 'sub OBD_IOC_CONNECT () { &_IOC(2, ord(\'f\'), 13, 4);}' unless
+ defined(&OBD_IOC_CONNECT);
+eval 'sub OBD_IOC_DISCONNECT () { &_IOC(1, ord(\'f\'), 14, 4);}' unless
+ defined(&OBD_IOC_DISCONNECT);
+eval 'sub OBD_IOC_STATFS () { &_IOC(3, ord(\'f\'), 15, 4);}' unless
+ defined(&OBD_IOC_STATFS);
+
+eval 'sub ATTR_MODE () {1;}' unless defined(&ATTR_MODE);
+eval 'sub ATTR_UID () {2;}' unless defined(&ATTR_UID);
+eval 'sub ATTR_GID () {4;}' unless defined(&ATTR_GID);
+eval 'sub ATTR_SIZE () {8;}' unless defined(&ATTR_SIZE);
+eval 'sub ATTR_ATIME () {16;}' unless defined(&ATTR_ATIME);
+eval 'sub ATTR_MTIME () {32;}' unless defined(&ATTR_MTIME);
+eval 'sub ATTR_CTIME () {64;}' unless defined(&ATTR_CTIME);
use Getopt::Long;
use File::stat;
my %commands =
('create' => {func => "Create", doc => "create: creates a new inode"},
'setup' => {func => "Setup", doc => "setup: initializes the environment"},
+ 'connect' => {func => "Connect", doc => "connect: allocates client ID for this session"},
+ 'disconnect' => {func => "Disconnect", doc => "disconnect [id]: frees client resources"},
'sync' => {func => "Sync", doc => "sync: flushes buffers to disk"},
'destroy' => {func => "Destroy", doc => "setup: destroys an inode"},
'dec_use_count' => {func => "Decusecount", doc => "decreases the module use count so that the module can be removed following an oops"},
'read' => {func => "Read", doc => "read <inode> <count> [offset]"},
+ 'write' => {func => "Write", doc => "write <inode> <offset> <text>"},
+ 'setattr' => {func => "Setattr", doc => "setattr [mode [uid [gid [size [atime [mtime [ctime]]]]]]]"},
+ 'getattr' => {func => "Getattr", doc => "getattr [inode]: displays inode object attributes"},
+ 'preallocate' => {func => "Preallocate", doc => "preallocate [num]: requests preallocation of num inodes."},
+ 'statfs' => {func => "Statfs", doc => "statfs: filesystem status information"},
'help' => {func => \&Help, doc => "help: this message"},
'quit' => {func => \&Quit, doc => "see \"exit\""},
'exit' => {func => \&Quit, doc => "see \"quit\""}
}
}
+sub Connect {
+ my $id = 0;
+ my $ino = 0;
+ my $bs = 0;
+ my $bs_b = 0;
+ my $rc;
+
+ # unsigned int conn_id;
+ # unsigned long conn_ino;
+ # unsigned long conn_blocksize;
+ # unsigned char conn_blocksize_bits;
+
+ my $packed = pack("ILLC", $id, $ino, $bs, $bs_b);
+ $rc = ioctl(DEV_OBD, &OBD_IOC_CONNECT, $packed);
+ ($id, $ino, $bs, $bs_b) = unpack("ILLC", $packed);
+
+ if (!defined $rc) {
+ print STDERR "ioctl failed: $!\n";
+ } elsif ($rc eq "0 but true") {
+ $::client_id = $id;
+ print "Client ID : $id\n";
+ print "Root inode : $ino\n";
+ print "Blocksize : $bs\n";
+ print "Blocksize bits: $bs_b\n";
+ print "Finished (success)\n";
+ } else {
+ print "ioctl returned error code $rc.\n";
+ }
+}
+
+sub Disconnect {
+ my $id = shift;
+
+ if (!defined($id)) {
+ $id = $::client_id;
+ }
+
+ if (!defined($id)) {
+ print "syntax: disconnect [client ID]\n";
+ print "When client ID is not given, the last valid client ID to be returned by a\n";
+ print "connect command this session is used; there is no such ID.\n";
+ return;
+ }
+
+ my $packed = pack("L", $id);
+ my $rc = ioctl(DEV_OBD, &OBD_IOC_DISCONNECT, $packed);
+
+ if (!defined $rc) {
+ print STDERR "ioctl failed: $!\n";
+ } elsif ($rc eq "0 but true") {
+ $::client_id = undef;
+ print "Finished (success)\n";
+ } else {
+ print "ioctl returned error code $rc.\n";
+ }
+}
+
sub Create {
my $arg = shift;
my $quiet = shift;
- my $err = "0";
my $rc;
if (defined($quiet) && !($quiet eq "quiet")) {
return;
}
+ my $packed = pack("I", $::client_id);
if (!defined($arg) || scalar($arg) < 2) {
print "Creating 1 object...\n";
- $rc = ioctl(DEV_OBD, &OBD_IOC_CREATE, $err);
+ my $packed = pack("I", 0);
+ $rc = ioctl(DEV_OBD, &OBD_IOC_CREATE, $packed);
if (!defined($quiet)) {
- my $ino = unpack("L", $err);
+ my $ino = unpack("L", $packed);
print "Created object #$ino.\n";
}
} else {
print "Creating " . scalar($arg) . " objects...\n";
for ($i = 0; $i < scalar($arg); $i++) {
- $rc = ioctl(DEV_OBD, &OBD_IOC_CREATE, $err);
- if (!($rc eq "0 but true") || $err < 0) {
+ $rc = ioctl(DEV_OBD, &OBD_IOC_CREATE, $packed);
+ my $ino = unpack("L", $packed);
+ if (!($rc eq "0 but true") || $packed == 0) {
last;
} elsif (!defined($quiet)) {
- my $ino = unpack("L", $err);
print "Created object #$ino.\n";
}
}
}
sub Destroy {
+ if (!defined($id)) {
+ $id = $::client_id;
+ }
+
my $arg = shift;
if (!defined($arg) || scalar($arg) < 1) {
}
print "Destroying object $arg...\n";
- my $packed = pack("L", $arg);
+ my $packed = pack("IL", $::client_id, $arg);
my $rc = ioctl(DEV_OBD, &OBD_IOC_DESTROY, $packed);
if (!defined $rc) {
}
}
+sub Getattr {
+ if (!defined($::client_id)) {
+ print "You must first ``connect''.\n";
+ return;
+ }
+
+ my $inode = shift;
+
+ if (!defined($inode) || scalar($inode) < 1) {
+ print "invalid arguments; type \"help getattr\" for a synopsis\n";
+ return;
+ }
+
+ # see Setattr
+ my $packed = pack("ILsx2lLLLI", $::client_id, $inode, 0, 0, 0, 0, 0, 0, 0,
+ 0);
+ my $rc = ioctl(DEV_OBD, &OBD_IOC_GETATTR, $packed);
+
+ if (!defined $rc) {
+ print STDERR "ioctl failed: $!\n";
+ } elsif ($rc eq "0 but true") {
+ my ($valid, $mode, $uid, $gid, $size, $atime, $mtime, $ctime, $flags);
+ ($valid, $mode, $uid, $gid, $size, $atime, $mtime, $ctime, $flags) =
+ unpack("ISssx2lLLLI", $packed);
+
+ printf("Inode: %d Mode: %04d\n", $inode, $mode);
+ printf("User: %6d Group: %6d Size: %d\n", $uid, $gid, $size);
+ printf("ctime: %08lx -- %s\n", $ctime, scalar(gmtime($ctime)));
+ printf("atime: %08lx -- %s\n", $atime, scalar(gmtime($atime)));
+ printf("mtime: %08lx -- %s\n", $mtime, scalar(gmtime($mtime)));
+ printf("flags: %08x\n", $flags);
+ print "Finished (success)\n";
+ } else {
+ print "ioctl returned error code $rc.\n";
+ }
+}
+
+sub Setattr {
+ if (!defined($::client_id)) {
+ print "You must first ``connect''.\n";
+ return;
+ }
+
+ my $inode = shift;
+ my $valid = 0;
+ my $mode = shift;
+ my $uid = shift;
+ my $gid = shift;
+ my $size = shift;
+ my $atime = shift;
+ my $mtime = shift;
+ my $ctime = shift;
+
+ if (defined($uid)) {
+ $valid |= &ATTR_UID;
+ }
+ if (defined($gid)) {
+ $valid |= &ATTR_GID;
+ }
+ if (defined($size)) {
+ $valid |= &ATTR_SIZE;
+ }
+ if (defined($atime)) {
+ $valid |= &ATTR_ATIME;
+ }
+ if (defined($mtime)) {
+ $valid |= &ATTR_MTIME;
+ }
+ if (defined($ctime)) {
+ $valid |= &ATTR_CTIME;
+ }
+ if (defined($mode)) {
+ $valid |= &ATTR_MODE;
+ }
+
+ if (!defined($inode) || scalar($inode) < 1) {
+ print "invalid arguments; type \"help setattr\" for a synopsis\n";
+ return;
+ }
+
+ #struct iattr {
+ # unsigned int ia_valid; (32)
+ # umode_t ia_mode; (16)
+ # uid_t ia_uid; (16)
+ # gid_t ia_gid; (16)
+ # -- 16 bit alignment here! --
+ # off_t ia_size; (32)
+ # time_t ia_atime; (32)
+ # time_t ia_mtime; (32)
+ # time_t ia_ctime; (32)
+ # unsigned int ia_attr_flags; (32)
+ #};
+ my $packed = pack("ILLSssx2ILLLL", $::client_id, $inode, $valid, $mode,
+ $uid, $gid, $size, $atime, $mtime, $ctime, 0);
+ my $rc = ioctl(DEV_OBD, &OBD_IOC_SETATTR, $packed);
+
+ if (!defined $rc) {
+ print STDERR "ioctl failed: $!\n";
+ } elsif ($rc eq "0 but true") {
+ print "Finished (success)\n";
+ } else {
+ print "ioctl returned error code $rc.\n";
+ }
+}
+
sub Read {
+ if (!defined($::client_id)) {
+ print "You must first ``connect''.\n";
+ return;
+ }
+
my $inode = shift;
my $count = shift;
my $offset = shift;
-
+
if (!defined($inode) || scalar($inode) < 1 || !defined($count) ||
$count < 1 || (defined($offset) && $offset < 0)) {
print "invalid arguments; type \"help read\" for a synopsis\n";
my $buf = sprintf("%${count}s", " ");
die "suck" if (length($buf) != $count);
- my $packed = pack("LpLLL", $inode, $buf, $count, 0, $offset);
+ # the perl we're using doesn't support pack type Q, and offset is 64 bits
+ my $packed = pack("ILpLLL", $::client_id, $inode, $buf, $count, 0, $offset);
+
my $rc = ioctl(DEV_OBD, &OBD_IOC_READ, $packed);
- $retval = unpack("x4x4L", $packed);
+ $retval = unpack("L", $packed);
if (!defined $rc) {
print STDERR "ioctl failed: $!\n";
}
}
-# Unused for now
+sub Write {
+ if (!defined($::client_id)) {
+ print "You must first ``connect''.\n";
+ return;
+ }
+
+ my $inode = shift;
+ my $offset = shift;
+ my $text = join(' ', @_);
+ my $count = length($text);
+
+ if (!defined($inode) || scalar($inode) < 1 || !defined($offset) ||
+ scalar($offset) < 0) {
+ print "invalid arguments; type \"help write\" for a synopsis\n";
+ return;
+ }
+
+ if (!defined($text)) {
+ $text = "";
+ $count = 0;
+ }
+
+ print("Writing $count bytes starting at byte $offset to object " .
+ "$inode...\n");
+
+ # the perl we're using doesn't support pack type Q
+ my $packed = pack("ILpLLL", $::client_id, $inode, $text, $count, 0, $offset);
+ my $rc = ioctl(DEV_OBD, &OBD_IOC_WRITE, $packed);
+
+ $retval = unpack("L", $packed);
+
+ if (!defined $rc) {
+ print STDERR "ioctl failed: $!\n";
+ } elsif ($rc eq "0 but true") {
+ if ($retval >= 0) {
+ print "\nWrote $retval of an attempted $count bytes.\n";
+ print "Finished (success)\n";
+ } else {
+ print "Finished (error $retval)\n";
+ }
+ } else {
+ print "ioctl returned error code $rc.\n";
+ }
+}
+
sub Preallocate {
my $arg = shift;
+ if (!defined($::client_id)) {
+ print "You must first ``connect''.\n";
+ return;
+ }
+
if (!defined($arg) || scalar($arg) < 1 || scalar($arg) > 32) {
$arg = 32;
}
print "Preallocating $arg inodes...\n";
- my $packed = pack("Lx128", $arg); # alloc, inodes[32]
+ my $packed = pack("LLx128", $::client_id, $arg);
+ # client id, alloc, inodes[32]
+
my $rc = ioctl(DEV_OBD, &OBD_IOC_PREALLOCATE, $packed);
if (!defined $rc) {
print STDERR "ioctl failed: $!\n";
} elsif ($rc eq "0 but true") {
- my $alloc = unpack("L", $packed);
- my @inodes = unpack("L32", $packed);
+ my $alloc = unpack("x4L", $packed);
+ my @inodes = unpack("x8L32", $packed);
my $i;
print "Got $alloc inodes: ";
- for ($i = 1; $i <= $alloc; ++$i) {
- print $inodes[$i] . " ";
+ foreach $i (@inodes) {
+ print $i . " ";
}
print "\nFinished (success)\n";
} else {
}
}
+sub Statfs {
+ if (!defined($::client_id)) {
+ print "You must first ``connect''.\n";
+ return;
+ }
+
+ # struct statfs {
+ # long f_type;
+ # long f_bsize;
+ # long f_blocks;
+ # long f_bfree;
+ # long f_bavail;
+ # long f_files;
+ # long f_ffree;
+ # __kernel_fsid_t f_fsid; (64 bits)
+ # long f_namelen;
+ # long f_spare[6];
+ # };
+
+ my $packed = pack("LLLLLLLIILL6", $::client_id, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0);
+
+ my $rc = ioctl(DEV_OBD, &OBD_IOC_STATFS, $packed);
+
+ if (!defined $rc) {
+ print STDERR "ioctl failed: $!\n";
+ } elsif ($rc eq "0 but true") {
+ my ($bsize, $blocks, $bfree, $bavail, $files, $ffree) =
+ unpack("x4LLLLLL", $packed);
+ print("$bsize byte blocks: $blocks, " . ($blocks - $bfree) . " used, " .
+ "$bfree free ($bavail available).\n");
+ print "$files files, " . ($files - $ffree) . " used, $ffree free.\n";
+ print "Finished (success)\n";
+ } else {
+ print "ioctl returned error code $rc.\n";
+ }
+}
+
sub Help {
my $arg = shift;
}
sub Quit {
+ if ($::client_id) {
+ print "Disconnecting active session ($::client_id)...";
+ Disconnect($::client_id);
+ }
exit;
}
--- /dev/null
+#
+# Makefile 1.00 Peter Braam <braam@cs.cmu.edu>
+#
+
+include ../config.mk
+
+MODDIR = $(PREFIX)/lib/modules/$(UTS_RELEASE)
+
+ifndef CFLAGS
+# Don't remove "-O2" or bad things will happen!
+KFLAGS = -O2 -Wall -Wstrict-prototypes -Winline -pipe -I../obd
+endif
+
+CPPFLAGS = $(PCDEBUG) -D__KERNEL__ -DMODULE -I../include \
+ -I. -I$(LINUX)/include $(SMPFLAG)
+COFLAGS = -kv
+
+CFLAGS= $(KFLAGS) $(MFLAG)
+
+SRCS=sysctl.c super.c
+OBJS=$(SRCS:%.c=%.o)
+
+MODULES = obdfs.o
+
+all: ../.prereq.ok kcheck $(MODULES)
+
+showvar:
+ @echo CFLAGS $(CFLAGS)
+ @echo CPPFLAGS $(CPPFLAGS)
+ @echo MODDIR $(MODDIR)
+ @echo UTS_RELEASE $(UTS_RELEASE)
+ @echo SRCS $(SRCS)
+ @echo OBJS $(OBJS)
+
+clean:
+ rm -f core core.* *.o *.d .*.o *.s *.a *~ .depend .depfiles/*.d
+
+MODDIR = $(PREFIX)/lib/modules/$(UTS_RELEASE)
+
+install: $(MODULES) ../.prereq.ok kcheck
+ -mkdir -p $(MODDIR)/fs
+ install -o root -g root -m 644 $(MODULES) $(MODDIR)/fs/
+
+# Stuff to automatically maintain dependency files
+
+.c.o:
+ $(CC) -MD $(CFLAGS) $(CPPFLAGS) -c $<
+ @mkdir -p .depfiles ; mv $*.d .depfiles
+
+kcheck:
+ @. ../config.out ; \
+ if [ "$$CHECK" != "" ] ; then \
+ if [ "`cksum < $$CHECK`" != "$$CKSUM" ] ; then \
+ /bin/echo -n "Kernel configuration has changed." ; \
+ /bin/echo " Please re-run 'make config'." ; \
+ exit 1 ; \
+ fi ; \
+ fi
+
+obdfs.o: $(OBJS)
+ $(LD) -m "`ld --help | awk '/supported emulations/ {print $$4}'`" -r -o $@ $(OBJS)
+
+-include $(SRCS:%.c=.depfiles/%.d)
--- /dev/null
+/*
+ * OBDFS Super operations
+ *
+ * Copryright (C) 1996 Peter J. Braam <braam@stelias.com>
+ */
+
+#define EXPORT_SYMTAB
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/errno.h>
+#include <linux/locks.h>
+#include <linux/unistd.h>
+
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <asm/uaccess.h>
+#include <linux/vmalloc.h>
+#include <asm/segment.h>
+
+#include <../obd/linux/sym_obd.h>
+#include <obdfs.h>
+
+/* DEBUGGING! */
+#undef MOD_INC_USE_COUNT
+#define MOD_INC_USE_COUNT
+#undef MOD_DEC_USE_COUNT
+#define MOD_DEC_USE_COUNT
+
+/* VFS super_block ops */
+static struct super_block *obdfs_read_super(struct super_block *, void *, int);
+static void obdfs_read_inode(struct inode *);
+static int obdfs_notify_change(struct dentry *dentry, struct iattr *attr);
+static void obdfs_write_inode(struct inode *);
+static void obdfs_delete_inode(struct inode *);
+static void obdfs_put_super(struct super_block *);
+static int obdfs_statfs(struct super_block *sb, struct statfs *buf,
+ int bufsiz);
+
+/* exported operations */
+struct super_operations obdfs_super_operations =
+{
+ obdfs_read_inode, /* read_inode */
+ obdfs_write_inode, /* write_inode */
+ NULL, /* put_inode */
+ obdfs_delete_inode, /* delete_inode */
+ obdfs_notify_change, /* notify_change */
+ obdfs_put_super, /* put_super */
+ NULL, /* write_super */
+ obdfs_statfs, /* statfs */
+ NULL /* remount_fs */
+};
+
+struct obdfs_sb_info obdfs_super_info;
+int obd_minor = 0;
+int obd_root_ino = 2;
+
+static struct super_block * obdfs_read_super(struct super_block *sb,
+ void *data, int silent)
+{
+ struct inode *root = 0;
+ struct obdfs_sb_info *sbi = NULL;
+ int error = 0;
+
+ ENTRY;
+ MOD_INC_USE_COUNT;
+
+ sbi = &obdfs_super_info;
+
+ if ( sbi->osi_super ) {
+ printk("Already mounted\n");
+ MOD_DEC_USE_COUNT;
+ return NULL;
+ }
+
+ error = obd_connect(obd_minor, &sbi->osi_conn_info);
+ if ( error ) {
+ printk("OBDFS: cannot connect to 0x%x.\n", obd_minor);
+ goto error;
+ }
+ sbi->osi_super = sb;
+
+ lock_super(sb);
+ sb->u.generic_sbp = sbi;
+ sb->s_blocksize = sbi->osi_conn_info.conn_blocksize;
+ sb->s_blocksize_bits = sbi->osi_conn_info.conn_blocksize_bits;
+ sb->s_magic = OBDFS_SUPER_MAGIC;
+ sb->s_op = &obdfs_super_operations;
+
+ /* make root inode */
+ root = iget(sb, sbi->osi_conn_info.conn_ino);
+ if (!root || is_bad_inode(root)) {
+ printk("OBDFS: bad iget for root\n");
+ sb->s_dev = 0;
+ error = ENOENT;
+ unlock_super(sb);
+ goto error;
+ }
+
+ printk("obdfs_read_super: rootinode is %ld dev %d\n",
+ root->i_ino, root->i_dev);
+ sb->s_root = d_alloc_root(root, NULL);
+ unlock_super(sb);
+ EXIT;
+ return sb;
+
+ error:
+ EXIT;
+ MOD_DEC_USE_COUNT;
+ if (sbi) {
+ sbi->osi_super = NULL;
+ }
+ if (root) {
+ iput(root);
+ }
+ sb->s_dev = 0;
+ return NULL;
+}
+
+static void obdfs_put_super(struct super_block *sb)
+{
+ struct obdfs_sb_info *sbi;
+
+ ENTRY;
+
+
+ sb->s_dev = 0;
+
+ /* XXX flush stuff */
+ sbi = sb->u.generic_sbp;
+ sb->u.generic_sbp = NULL;
+ obd_disconnect(sbi->osi_conn_info.conn_id);
+ sbi->osi_super = NULL;
+
+
+ printk("OBDFS: Bye bye.\n");
+ memset(sbi, 0, sizeof(* sbi));
+
+ MOD_DEC_USE_COUNT;
+ EXIT;
+}
+
+/* all filling in of inodes postponed until lookup */
+static void obdfs_read_inode(struct inode *inode)
+{
+ struct iattr attr;
+ int error;
+ struct obdfs_sb_info *sbi = inode->i_sb->u.generic_sbp;
+ ENTRY;
+
+ error = obd_getattr(sbi->osi_conn_info.conn_id, inode->i_ino, &attr);
+ if (error) {
+ printk("obdfs_read_inode: ibd_getattr fails (%d)\n", error);
+ return;
+ }
+
+ inode_setattr(inode, &attr);
+ inode->i_op = NULL;
+ return;
+}
+
+static void inode_to_iattr(struct inode *inode, struct iattr *tmp)
+{
+ tmp->ia_mode = inode->i_mode;
+ tmp->ia_uid = inode->i_uid;
+ tmp->ia_gid = inode->i_gid;
+ tmp->ia_size = inode->i_size;
+ tmp->ia_atime = inode->i_atime;
+ tmp->ia_mtime = inode->i_mtime;
+ tmp->ia_ctime = inode->i_ctime;
+ tmp->ia_attr_flags = inode->i_flags;
+
+ tmp->ia_valid = ~0;
+}
+
+static void obdfs_write_inode(struct inode *inode)
+{
+ struct obdfs_sb_info *sbi;
+ struct iattr attr;
+ int error;
+ ENTRY;
+
+ inode_to_iattr(inode, &attr);
+ sbi = inode->i_sb->u.generic_sbp;
+ error = obd_setattr(sbi->osi_conn_info.conn_id, inode->i_ino, &attr);
+ if (error) {
+ printk("obdfs_write_inode: ibd_setattr fails (%d)\n", error);
+ return;
+ }
+
+ return;
+}
+
+static void obdfs_delete_inode(struct inode *inode)
+{
+ struct obdfs_sb_info *sbi;
+ int error;
+ ENTRY;
+
+ sbi = inode->i_sb->u.generic_sbp;
+ error = obd_destroy(sbi->osi_conn_info.conn_id , inode->i_ino);
+ if (error) {
+ printk("obdfs_delete_node: ibd_destroy fails (%d)\n", error);
+ return;
+ }
+
+ EXIT;
+}
+
+static int obdfs_notify_change(struct dentry *de, struct iattr *iattr)
+{
+ struct inode *inode = de->d_inode;
+ struct obdfs_sb_info * sbi;
+ int error;
+
+ ENTRY;
+
+ sbi = inode->i_sb->u.generic_sbp;
+ error = obd_setattr(sbi->osi_conn_info.conn_id, inode->i_ino, iattr);
+ if ( error ) {
+ printk("obdfs_notify_change: obd_setattr fails (%d)\n", error);
+ return error;
+ } else {
+ inode_setattr(inode, iattr);
+ }
+ EXIT;
+ return error;
+}
+
+
+static int obdfs_statfs(struct super_block *sb, struct statfs *buf,
+ int bufsize)
+{
+ struct statfs tmp;
+ struct obdfs_sb_info * sbi;
+ int error;
+
+ ENTRY;
+
+ sbi = sb->u.generic_sbp;
+ error = obd_statfs(sbi->osi_conn_info.conn_id, &tmp);
+ if ( error ) {
+ printk("obdfs_notify_change: obd_statfs fails (%d)\n", error);
+ return error;
+ }
+ copy_to_user(buf, &tmp, (bufsize<sizeof(tmp)) ? bufsize : sizeof(tmp));
+
+ EXIT;
+
+ return error;
+}
+
+struct file_system_type obdfs_fs_type = {
+ "obdfs", 0, obdfs_read_super, NULL
+};
+
+int init_obdfs(void)
+{
+ printk(KERN_INFO "OBDFS v0.1, braam@stelias.com\n");
+
+ obdfs_sysctl_init();
+ return register_filesystem(&obdfs_fs_type);
+}
+
+
+#ifdef MODULE
+int init_module(void)
+{
+ return init_obdfs();
+}
+
+void cleanup_module(void)
+{
+ ENTRY;
+
+ obdfs_sysctl_clean();
+}
+void obdfs_psdev_dec_use_count(void)
+{
+ MOD_DEC_USE_COUNT;
+}
+
+EXPORT_SYMBOL(obdfs_psdev_dec_use_count);
+
+#endif
--- /dev/null
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/sysctl.h>
+#include <linux/swapctl.h>
+#include <linux/proc_fs.h>
+#include <linux/malloc.h>
+#include <linux/stat.h>
+#include <linux/ctype.h>
+#include <asm/bitops.h>
+#include <asm/segment.h>
+#include <asm/uaccess.h>
+#include <linux/utsname.h>
+
+#include <linux/sym_obd.h>
+#include <linux/presto.h>
+#include <linux/obd_psdev.h>
+#include <linux/presto_upcall.h>
+
+struct ctl_table_header *obdfs_table_header = NULL;
+
+int obdfs_debug_level = 4095;
+int obdfs_print_entry = 1;
+
+
+#define OBDFS_SYSCTL 1
+
+#define OBDFS_DEBUG 1 /* control debugging */
+#define OBDFS_ENTRY 2 /* control enter/leave pattern */
+#define OBDFS_TIMEOUT 3 /* timeout on upcalls to become intrble */
+#define OBDFS_HARD 4 /* mount type "hard" or "soft" */
+#define OBDFS_VARS 5
+#define OBDFS_INDEX 6
+#define OBDFS_RESET 7
+
+#define OBDFS_VARS_SLOT 2
+
+static ctl_table obdfs_table[] = {
+ {OBDFS_DEBUG, "debug", &obdfs_debug_level, sizeof(int), 0644, NULL, &proc_dointvec},
+ {OBDFS_ENTRY, "trace", &obdfs_print_entry, sizeof(int), 0644, NULL, &proc_dointvec},
+ { 0 }
+};
+
+static ctl_table jukebox_table[] = {
+ {OBDFS_SYSCTL, "obdfs", NULL, 0, 0555, obdfs_table},
+ {0}
+};
+
+void obdfs_sysctl_init (void)
+{
+#ifdef CONFIG_SYSCTL
+ if ( !obdfs_table_header )
+ obdfs_table_header = register_sysctl_table(jukebox_table, 0);
+#endif
+}
+
+void obdfs_sysctl_clean (void)
+{
+#ifdef CONFIG_SYSCTL
+ if ( obdfs_table_header )
+ unregister_sysctl_table(obdfs_table_header);
+ obdfs_table_header = NULL;
+#endif
+}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff