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-rw-r--r--fs/Makefile2
-rw-r--r--fs/autofs4/dev-ioctl.c5
-rw-r--r--fs/autofs4/expire.c19
-rw-r--r--fs/block_dev.c23
-rw-r--r--fs/cifs/CHANGES6
-rw-r--r--fs/cifs/cifsglob.h2
-rw-r--r--fs/cifs/cifsproto.h2
-rw-r--r--fs/cifs/cifssmb.c2
-rw-r--r--fs/cifs/connect.c50
-rw-r--r--fs/cifs/file.c2
-rw-r--r--fs/cifs/inode.c4
-rw-r--r--fs/cifs/transport.c48
-rw-r--r--fs/ext3/super.c11
-rw-r--r--fs/fat/Makefile6
-rw-r--r--fs/fat/cache.c25
-rw-r--r--fs/fat/dir.c20
-rw-r--r--fs/fat/fat.h329
-rw-r--r--fs/fat/fatent.c24
-rw-r--r--fs/fat/file.c49
-rw-r--r--fs/fat/inode.c131
-rw-r--r--fs/fat/misc.c155
-rw-r--r--fs/fat/namei_msdos.c (renamed from fs/msdos/namei.c)42
-rw-r--r--fs/fat/namei_vfat.c (renamed from fs/vfat/namei.c)161
-rw-r--r--fs/jffs2/background.c10
-rw-r--r--fs/jffs2/compr_lzo.c15
-rw-r--r--fs/jffs2/nodemgmt.c2
-rw-r--r--fs/msdos/Makefile7
-rw-r--r--fs/proc/uptime.c38
-rw-r--r--fs/vfat/Makefile7
29 files changed, 872 insertions, 325 deletions
diff --git a/fs/Makefile b/fs/Makefile
index 2168c902d5ca..d9f8afe6f0c4 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -81,8 +81,6 @@ obj-$(CONFIG_HUGETLBFS) += hugetlbfs/
81obj-$(CONFIG_CODA_FS) += coda/ 81obj-$(CONFIG_CODA_FS) += coda/
82obj-$(CONFIG_MINIX_FS) += minix/ 82obj-$(CONFIG_MINIX_FS) += minix/
83obj-$(CONFIG_FAT_FS) += fat/ 83obj-$(CONFIG_FAT_FS) += fat/
84obj-$(CONFIG_MSDOS_FS) += msdos/
85obj-$(CONFIG_VFAT_FS) += vfat/
86obj-$(CONFIG_BFS_FS) += bfs/ 84obj-$(CONFIG_BFS_FS) += bfs/
87obj-$(CONFIG_ISO9660_FS) += isofs/ 85obj-$(CONFIG_ISO9660_FS) += isofs/
88obj-$(CONFIG_HFSPLUS_FS) += hfsplus/ # Before hfs to find wrapped HFS+ 86obj-$(CONFIG_HFSPLUS_FS) += hfsplus/ # Before hfs to find wrapped HFS+
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 625abf5422e2..33bf8cbfd051 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -128,9 +128,10 @@ static inline void free_dev_ioctl(struct autofs_dev_ioctl *param)
128 */ 128 */
129static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param) 129static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param)
130{ 130{
131 int err = -EINVAL; 131 int err;
132 132
133 if (check_dev_ioctl_version(cmd, param)) { 133 err = check_dev_ioctl_version(cmd, param);
134 if (err) {
134 AUTOFS_WARN("invalid device control module version " 135 AUTOFS_WARN("invalid device control module version "
135 "supplied for cmd(0x%08x)", cmd); 136 "supplied for cmd(0x%08x)", cmd);
136 goto out; 137 goto out;
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index cde2f8e8935a..4b6fb3f628c0 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -56,12 +56,23 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
56 mntget(mnt); 56 mntget(mnt);
57 dget(dentry); 57 dget(dentry);
58 58
59 if (!autofs4_follow_mount(&mnt, &dentry)) 59 if (!follow_down(&mnt, &dentry))
60 goto done; 60 goto done;
61 61
62 /* This is an autofs submount, we can't expire it */ 62 if (is_autofs4_dentry(dentry)) {
63 if (is_autofs4_dentry(dentry)) 63 struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
64 goto done; 64
65 /* This is an autofs submount, we can't expire it */
66 if (sbi->type == AUTOFS_TYPE_INDIRECT)
67 goto done;
68
69 /*
70 * Otherwise it's an offset mount and we need to check
71 * if we can umount its mount, if there is one.
72 */
73 if (!d_mountpoint(dentry))
74 goto done;
75 }
65 76
66 /* Update the expiry counter if fs is busy */ 77 /* Update the expiry counter if fs is busy */
67 if (!may_umount_tree(mnt)) { 78 if (!may_umount_tree(mnt)) {
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 88a776fa0ef6..db831efbdbbd 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -986,7 +986,6 @@ static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part);
986static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) 986static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
987{ 987{
988 struct gendisk *disk; 988 struct gendisk *disk;
989 struct hd_struct *part = NULL;
990 int ret; 989 int ret;
991 int partno; 990 int partno;
992 int perm = 0; 991 int perm = 0;
@@ -1004,24 +1003,25 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
1004 return ret; 1003 return ret;
1005 } 1004 }
1006 1005
1007 ret = -ENXIO;
1008
1009 lock_kernel(); 1006 lock_kernel();
1010 1007
1008 ret = -ENXIO;
1011 disk = get_gendisk(bdev->bd_dev, &partno); 1009 disk = get_gendisk(bdev->bd_dev, &partno);
1012 if (!disk) 1010 if (!disk)
1013 goto out_unlock_kernel; 1011 goto out_unlock_kernel;
1014 part = disk_get_part(disk, partno);
1015 if (!part)
1016 goto out_unlock_kernel;
1017 1012
1018 mutex_lock_nested(&bdev->bd_mutex, for_part); 1013 mutex_lock_nested(&bdev->bd_mutex, for_part);
1019 if (!bdev->bd_openers) { 1014 if (!bdev->bd_openers) {
1020 bdev->bd_disk = disk; 1015 bdev->bd_disk = disk;
1021 bdev->bd_part = part;
1022 bdev->bd_contains = bdev; 1016 bdev->bd_contains = bdev;
1023 if (!partno) { 1017 if (!partno) {
1024 struct backing_dev_info *bdi; 1018 struct backing_dev_info *bdi;
1019
1020 ret = -ENXIO;
1021 bdev->bd_part = disk_get_part(disk, partno);
1022 if (!bdev->bd_part)
1023 goto out_clear;
1024
1025 if (disk->fops->open) { 1025 if (disk->fops->open) {
1026 ret = disk->fops->open(bdev, mode); 1026 ret = disk->fops->open(bdev, mode);
1027 if (ret) 1027 if (ret)
@@ -1049,18 +1049,17 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
1049 bdev->bd_contains = whole; 1049 bdev->bd_contains = whole;
1050 bdev->bd_inode->i_data.backing_dev_info = 1050 bdev->bd_inode->i_data.backing_dev_info =
1051 whole->bd_inode->i_data.backing_dev_info; 1051 whole->bd_inode->i_data.backing_dev_info;
1052 bdev->bd_part = disk_get_part(disk, partno);
1052 if (!(disk->flags & GENHD_FL_UP) || 1053 if (!(disk->flags & GENHD_FL_UP) ||
1053 !part || !part->nr_sects) { 1054 !bdev->bd_part || !bdev->bd_part->nr_sects) {
1054 ret = -ENXIO; 1055 ret = -ENXIO;
1055 goto out_clear; 1056 goto out_clear;
1056 } 1057 }
1057 bd_set_size(bdev, (loff_t)part->nr_sects << 9); 1058 bd_set_size(bdev, (loff_t)bdev->bd_part->nr_sects << 9);
1058 } 1059 }
1059 } else { 1060 } else {
1060 disk_put_part(part);
1061 put_disk(disk); 1061 put_disk(disk);
1062 module_put(disk->fops->owner); 1062 module_put(disk->fops->owner);
1063 part = NULL;
1064 disk = NULL; 1063 disk = NULL;
1065 if (bdev->bd_contains == bdev) { 1064 if (bdev->bd_contains == bdev) {
1066 if (bdev->bd_disk->fops->open) { 1065 if (bdev->bd_disk->fops->open) {
@@ -1080,6 +1079,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
1080 return 0; 1079 return 0;
1081 1080
1082 out_clear: 1081 out_clear:
1082 disk_put_part(bdev->bd_part);
1083 bdev->bd_disk = NULL; 1083 bdev->bd_disk = NULL;
1084 bdev->bd_part = NULL; 1084 bdev->bd_part = NULL;
1085 bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info; 1085 bdev->bd_inode->i_data.backing_dev_info = &default_backing_dev_info;
@@ -1091,7 +1091,6 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
1091 out_unlock_kernel: 1091 out_unlock_kernel:
1092 unlock_kernel(); 1092 unlock_kernel();
1093 1093
1094 disk_put_part(part);
1095 if (disk) 1094 if (disk)
1096 module_put(disk->fops->owner); 1095 module_put(disk->fops->owner);
1097 put_disk(disk); 1096 put_disk(disk);
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 8f528ea24c48..8855331b2fba 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -4,7 +4,11 @@ Various fixes to make delete of open files behavior more predictable
4(when delete of an open file fails we mark the file as "delete-on-close" 4(when delete of an open file fails we mark the file as "delete-on-close"
5in a way that more servers accept, but only if we can first rename the 5in a way that more servers accept, but only if we can first rename the
6file to a temporary name). Add experimental support for more safely 6file to a temporary name). Add experimental support for more safely
7handling fcntl(F_SETLEASE). 7handling fcntl(F_SETLEASE). Convert cifs to using blocking tcp
8sends, and also let tcp autotune the socket send and receive buffers.
9This reduces the number of EAGAIN errors returned by TCP/IP in
10high stress workloads (and the number of retries on socket writes
11when sending large SMBWriteX requests).
8 12
9Version 1.54 13Version 1.54
10------------ 14------------
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c791e5b5a914..1cb1189f24e0 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -141,6 +141,8 @@ struct TCP_Server_Info {
141 char versionMajor; 141 char versionMajor;
142 char versionMinor; 142 char versionMinor;
143 bool svlocal:1; /* local server or remote */ 143 bool svlocal:1; /* local server or remote */
144 bool noblocksnd; /* use blocking sendmsg */
145 bool noautotune; /* do not autotune send buf sizes */
144 atomic_t socketUseCount; /* number of open cifs sessions on socket */ 146 atomic_t socketUseCount; /* number of open cifs sessions on socket */
145 atomic_t inFlight; /* number of requests on the wire to server */ 147 atomic_t inFlight; /* number of requests on the wire to server */
146#ifdef CONFIG_CIFS_STATS2 148#ifdef CONFIG_CIFS_STATS2
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 0cff7fe986e8..6f21ecb85ce5 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -36,7 +36,7 @@ extern void cifs_buf_release(void *);
36extern struct smb_hdr *cifs_small_buf_get(void); 36extern struct smb_hdr *cifs_small_buf_get(void);
37extern void cifs_small_buf_release(void *); 37extern void cifs_small_buf_release(void *);
38extern int smb_send(struct socket *, struct smb_hdr *, 38extern int smb_send(struct socket *, struct smb_hdr *,
39 unsigned int /* length */ , struct sockaddr *); 39 unsigned int /* length */ , struct sockaddr *, bool);
40extern unsigned int _GetXid(void); 40extern unsigned int _GetXid(void);
41extern void _FreeXid(unsigned int); 41extern void _FreeXid(unsigned int);
42#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current->fsuid)); 42#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current->fsuid));
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 843a85fb8b9a..d5eac48fc415 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1536,7 +1536,7 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
1536 __u32 bytes_sent; 1536 __u32 bytes_sent;
1537 __u16 byte_count; 1537 __u16 byte_count;
1538 1538
1539 /* cFYI(1,("write at %lld %d bytes",offset,count));*/ 1539 /* cFYI(1, ("write at %lld %d bytes", offset, count));*/
1540 if (tcon->ses == NULL) 1540 if (tcon->ses == NULL)
1541 return -ECONNABORTED; 1541 return -ECONNABORTED;
1542 1542
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 71b7661e2260..e9f9248cb3fe 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -92,6 +92,8 @@ struct smb_vol {
92 bool seal:1; /* request transport encryption on share */ 92 bool seal:1; /* request transport encryption on share */
93 bool nodfs:1; /* Do not request DFS, even if available */ 93 bool nodfs:1; /* Do not request DFS, even if available */
94 bool local_lease:1; /* check leases only on local system, not remote */ 94 bool local_lease:1; /* check leases only on local system, not remote */
95 bool noblocksnd:1;
96 bool noautotune:1;
95 unsigned int rsize; 97 unsigned int rsize;
96 unsigned int wsize; 98 unsigned int wsize;
97 unsigned int sockopt; 99 unsigned int sockopt;
@@ -102,9 +104,11 @@ struct smb_vol {
102static int ipv4_connect(struct sockaddr_in *psin_server, 104static int ipv4_connect(struct sockaddr_in *psin_server,
103 struct socket **csocket, 105 struct socket **csocket,
104 char *netb_name, 106 char *netb_name,
105 char *server_netb_name); 107 char *server_netb_name,
108 bool noblocksnd,
109 bool nosndbuf); /* ipv6 never set sndbuf size */
106static int ipv6_connect(struct sockaddr_in6 *psin_server, 110static int ipv6_connect(struct sockaddr_in6 *psin_server,
107 struct socket **csocket); 111 struct socket **csocket, bool noblocksnd);
108 112
109 113
110 /* 114 /*
@@ -191,12 +195,13 @@ cifs_reconnect(struct TCP_Server_Info *server)
191 try_to_freeze(); 195 try_to_freeze();
192 if (server->protocolType == IPV6) { 196 if (server->protocolType == IPV6) {
193 rc = ipv6_connect(&server->addr.sockAddr6, 197 rc = ipv6_connect(&server->addr.sockAddr6,
194 &server->ssocket); 198 &server->ssocket, server->noautotune);
195 } else { 199 } else {
196 rc = ipv4_connect(&server->addr.sockAddr, 200 rc = ipv4_connect(&server->addr.sockAddr,
197 &server->ssocket, 201 &server->ssocket,
198 server->workstation_RFC1001_name, 202 server->workstation_RFC1001_name,
199 server->server_RFC1001_name); 203 server->server_RFC1001_name,
204 server->noblocksnd, server->noautotune);
200 } 205 }
201 if (rc) { 206 if (rc) {
202 cFYI(1, ("reconnect error %d", rc)); 207 cFYI(1, ("reconnect error %d", rc));
@@ -1192,6 +1197,10 @@ cifs_parse_mount_options(char *options, const char *devname,
1192 /* ignore */ 1197 /* ignore */
1193 } else if (strnicmp(data, "rw", 2) == 0) { 1198 } else if (strnicmp(data, "rw", 2) == 0) {
1194 vol->rw = true; 1199 vol->rw = true;
1200 } else if (strnicmp(data, "noblocksend", 11) == 0) {
1201 vol->noblocksnd = 1;
1202 } else if (strnicmp(data, "noautotune", 10) == 0) {
1203 vol->noautotune = 1;
1195 } else if ((strnicmp(data, "suid", 4) == 0) || 1204 } else if ((strnicmp(data, "suid", 4) == 0) ||
1196 (strnicmp(data, "nosuid", 6) == 0) || 1205 (strnicmp(data, "nosuid", 6) == 0) ||
1197 (strnicmp(data, "exec", 4) == 0) || 1206 (strnicmp(data, "exec", 4) == 0) ||
@@ -1518,7 +1527,8 @@ static void rfc1002mangle(char *target, char *source, unsigned int length)
1518 1527
1519static int 1528static int
1520ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, 1529ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
1521 char *netbios_name, char *target_name) 1530 char *netbios_name, char *target_name,
1531 bool noblocksnd, bool noautotune)
1522{ 1532{
1523 int rc = 0; 1533 int rc = 0;
1524 int connected = 0; 1534 int connected = 0;
@@ -1590,11 +1600,16 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
1590 (*csocket)->sk->sk_sndbuf, 1600 (*csocket)->sk->sk_sndbuf,
1591 (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); 1601 (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo));
1592 (*csocket)->sk->sk_rcvtimeo = 7 * HZ; 1602 (*csocket)->sk->sk_rcvtimeo = 7 * HZ;
1603 if (!noblocksnd)
1604 (*csocket)->sk->sk_sndtimeo = 3 * HZ;
1605
1593 /* make the bufsizes depend on wsize/rsize and max requests */ 1606 /* make the bufsizes depend on wsize/rsize and max requests */
1594 if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) 1607 if (noautotune) {
1595 (*csocket)->sk->sk_sndbuf = 200 * 1024; 1608 if ((*csocket)->sk->sk_sndbuf < (200 * 1024))
1596 if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) 1609 (*csocket)->sk->sk_sndbuf = 200 * 1024;
1597 (*csocket)->sk->sk_rcvbuf = 140 * 1024; 1610 if ((*csocket)->sk->sk_rcvbuf < (140 * 1024))
1611 (*csocket)->sk->sk_rcvbuf = 140 * 1024;
1612 }
1598 1613
1599 /* send RFC1001 sessinit */ 1614 /* send RFC1001 sessinit */
1600 if (psin_server->sin_port == htons(RFC1001_PORT)) { 1615 if (psin_server->sin_port == htons(RFC1001_PORT)) {
@@ -1631,7 +1646,7 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
1631 /* sizeof RFC1002_SESSION_REQUEST with no scope */ 1646 /* sizeof RFC1002_SESSION_REQUEST with no scope */
1632 smb_buf->smb_buf_length = 0x81000044; 1647 smb_buf->smb_buf_length = 0x81000044;
1633 rc = smb_send(*csocket, smb_buf, 0x44, 1648 rc = smb_send(*csocket, smb_buf, 0x44,
1634 (struct sockaddr *)psin_server); 1649 (struct sockaddr *)psin_server, noblocksnd);
1635 kfree(ses_init_buf); 1650 kfree(ses_init_buf);
1636 msleep(1); /* RFC1001 layer in at least one server 1651 msleep(1); /* RFC1001 layer in at least one server
1637 requires very short break before negprot 1652 requires very short break before negprot
@@ -1651,7 +1666,8 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
1651} 1666}
1652 1667
1653static int 1668static int
1654ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) 1669ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket,
1670 bool noblocksnd)
1655{ 1671{
1656 int rc = 0; 1672 int rc = 0;
1657 int connected = 0; 1673 int connected = 0;
@@ -1720,6 +1736,9 @@ ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
1720 the default. sock_setsockopt not used because it expects 1736 the default. sock_setsockopt not used because it expects
1721 user space buffer */ 1737 user space buffer */
1722 (*csocket)->sk->sk_rcvtimeo = 7 * HZ; 1738 (*csocket)->sk->sk_rcvtimeo = 7 * HZ;
1739 if (!noblocksnd)
1740 (*csocket)->sk->sk_sndtimeo = 3 * HZ;
1741
1723 1742
1724 return rc; 1743 return rc;
1725} 1744}
@@ -1983,11 +2002,14 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
1983 cFYI(1, ("attempting ipv6 connect")); 2002 cFYI(1, ("attempting ipv6 connect"));
1984 /* BB should we allow ipv6 on port 139? */ 2003 /* BB should we allow ipv6 on port 139? */
1985 /* other OS never observed in Wild doing 139 with v6 */ 2004 /* other OS never observed in Wild doing 139 with v6 */
1986 rc = ipv6_connect(&sin_server6, &csocket); 2005 rc = ipv6_connect(&sin_server6, &csocket,
2006 volume_info.noblocksnd);
1987 } else 2007 } else
1988 rc = ipv4_connect(&sin_server, &csocket, 2008 rc = ipv4_connect(&sin_server, &csocket,
1989 volume_info.source_rfc1001_name, 2009 volume_info.source_rfc1001_name,
1990 volume_info.target_rfc1001_name); 2010 volume_info.target_rfc1001_name,
2011 volume_info.noblocksnd,
2012 volume_info.noautotune);
1991 if (rc < 0) { 2013 if (rc < 0) {
1992 cERROR(1, ("Error connecting to IPv4 socket. " 2014 cERROR(1, ("Error connecting to IPv4 socket. "
1993 "Aborting operation")); 2015 "Aborting operation"));
@@ -2002,6 +2024,8 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
2002 sock_release(csocket); 2024 sock_release(csocket);
2003 goto out; 2025 goto out;
2004 } else { 2026 } else {
2027 srvTcp->noblocksnd = volume_info.noblocksnd;
2028 srvTcp->noautotune = volume_info.noautotune;
2005 memcpy(&srvTcp->addr.sockAddr, &sin_server, 2029 memcpy(&srvTcp->addr.sockAddr, &sin_server,
2006 sizeof(struct sockaddr_in)); 2030 sizeof(struct sockaddr_in));
2007 atomic_set(&srvTcp->inFlight, 0); 2031 atomic_set(&srvTcp->inFlight, 0);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 62d8bd8f14c0..ead1a3bb0256 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1824,7 +1824,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
1824 pTcon = cifs_sb->tcon; 1824 pTcon = cifs_sb->tcon;
1825 1825
1826 pagevec_init(&lru_pvec, 0); 1826 pagevec_init(&lru_pvec, 0);
1827 cFYI(DBG2, ("rpages: num pages %d", num_pages)); 1827 cFYI(DBG2, ("rpages: num pages %d", num_pages));
1828 for (i = 0; i < num_pages; ) { 1828 for (i = 0; i < num_pages; ) {
1829 unsigned contig_pages; 1829 unsigned contig_pages;
1830 struct page *tmp_page; 1830 struct page *tmp_page;
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index d54fa8aeaea9..ff8c68de4a92 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1361,9 +1361,11 @@ int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
1361 CIFS_MOUNT_MAP_SPECIAL_CHR); 1361 CIFS_MOUNT_MAP_SPECIAL_CHR);
1362 1362
1363 if (tmprc == 0 && (info_buf_source->UniqueId == 1363 if (tmprc == 0 && (info_buf_source->UniqueId ==
1364 info_buf_target->UniqueId)) 1364 info_buf_target->UniqueId)) {
1365 /* same file, POSIX says that this is a noop */ 1365 /* same file, POSIX says that this is a noop */
1366 rc = 0;
1366 goto cifs_rename_exit; 1367 goto cifs_rename_exit;
1368 }
1367 } /* else ... BB we could add the same check for Windows by 1369 } /* else ... BB we could add the same check for Windows by
1368 checking the UniqueId via FILE_INTERNAL_INFO */ 1370 checking the UniqueId via FILE_INTERNAL_INFO */
1369 1371
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index bf0e6d8e382a..ff8243a8fe3e 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -161,7 +161,7 @@ void DeleteTconOplockQEntries(struct cifsTconInfo *tcon)
161 161
162int 162int
163smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer, 163smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
164 unsigned int smb_buf_length, struct sockaddr *sin) 164 unsigned int smb_buf_length, struct sockaddr *sin, bool noblocksnd)
165{ 165{
166 int rc = 0; 166 int rc = 0;
167 int i = 0; 167 int i = 0;
@@ -178,7 +178,10 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
178 smb_msg.msg_namelen = sizeof(struct sockaddr); 178 smb_msg.msg_namelen = sizeof(struct sockaddr);
179 smb_msg.msg_control = NULL; 179 smb_msg.msg_control = NULL;
180 smb_msg.msg_controllen = 0; 180 smb_msg.msg_controllen = 0;
181 smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL; /* BB add more flags?*/ 181 if (noblocksnd)
182 smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
183 else
184 smb_msg.msg_flags = MSG_NOSIGNAL;
182 185
183 /* smb header is converted in header_assemble. bcc and rest of SMB word 186 /* smb header is converted in header_assemble. bcc and rest of SMB word
184 area, and byte area if necessary, is converted to littleendian in 187 area, and byte area if necessary, is converted to littleendian in
@@ -229,8 +232,8 @@ smb_send(struct socket *ssocket, struct smb_hdr *smb_buffer,
229} 232}
230 233
231static int 234static int
232smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec, 235smb_send2(struct TCP_Server_Info *server, struct kvec *iov, int n_vec,
233 struct sockaddr *sin) 236 struct sockaddr *sin, bool noblocksnd)
234{ 237{
235 int rc = 0; 238 int rc = 0;
236 int i = 0; 239 int i = 0;
@@ -240,6 +243,7 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
240 unsigned int total_len; 243 unsigned int total_len;
241 int first_vec = 0; 244 int first_vec = 0;
242 unsigned int smb_buf_length = smb_buffer->smb_buf_length; 245 unsigned int smb_buf_length = smb_buffer->smb_buf_length;
246 struct socket *ssocket = server->ssocket;
243 247
244 if (ssocket == NULL) 248 if (ssocket == NULL)
245 return -ENOTSOCK; /* BB eventually add reconnect code here */ 249 return -ENOTSOCK; /* BB eventually add reconnect code here */
@@ -248,7 +252,10 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
248 smb_msg.msg_namelen = sizeof(struct sockaddr); 252 smb_msg.msg_namelen = sizeof(struct sockaddr);
249 smb_msg.msg_control = NULL; 253 smb_msg.msg_control = NULL;
250 smb_msg.msg_controllen = 0; 254 smb_msg.msg_controllen = 0;
251 smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL; /* BB add more flags?*/ 255 if (noblocksnd)
256 smb_msg.msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL;
257 else
258 smb_msg.msg_flags = MSG_NOSIGNAL;
252 259
253 /* smb header is converted in header_assemble. bcc and rest of SMB word 260 /* smb header is converted in header_assemble. bcc and rest of SMB word
254 area, and byte area if necessary, is converted to littleendian in 261 area, and byte area if necessary, is converted to littleendian in
@@ -283,8 +290,11 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
283 if (rc < 0) 290 if (rc < 0)
284 break; 291 break;
285 292
286 if (rc >= total_len) { 293 if (rc == total_len) {
287 WARN_ON(rc > total_len); 294 total_len = 0;
295 break;
296 } else if (rc > total_len) {
297 cERROR(1, ("sent %d requested %d", rc, total_len));
288 break; 298 break;
289 } 299 }
290 if (rc == 0) { 300 if (rc == 0) {
@@ -312,6 +322,16 @@ smb_send2(struct socket *ssocket, struct kvec *iov, int n_vec,
312 i = 0; /* in case we get ENOSPC on the next send */ 322 i = 0; /* in case we get ENOSPC on the next send */
313 } 323 }
314 324
325 if ((total_len > 0) && (total_len != smb_buf_length + 4)) {
326 cFYI(1, ("partial send (%d remaining), terminating session",
327 total_len));
328 /* If we have only sent part of an SMB then the next SMB
329 could be taken as the remainder of this one. We need
330 to kill the socket so the server throws away the partial
331 SMB */
332 server->tcpStatus = CifsNeedReconnect;
333 }
334
315 if (rc < 0) { 335 if (rc < 0) {
316 cERROR(1, ("Error %d sending data on socket to server", rc)); 336 cERROR(1, ("Error %d sending data on socket to server", rc));
317 } else 337 } else
@@ -518,8 +538,9 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
518#ifdef CONFIG_CIFS_STATS2 538#ifdef CONFIG_CIFS_STATS2
519 atomic_inc(&ses->server->inSend); 539 atomic_inc(&ses->server->inSend);
520#endif 540#endif
521 rc = smb_send2(ses->server->ssocket, iov, n_vec, 541 rc = smb_send2(ses->server, iov, n_vec,
522 (struct sockaddr *) &(ses->server->addr.sockAddr)); 542 (struct sockaddr *) &(ses->server->addr.sockAddr),
543 ses->server->noblocksnd);
523#ifdef CONFIG_CIFS_STATS2 544#ifdef CONFIG_CIFS_STATS2
524 atomic_dec(&ses->server->inSend); 545 atomic_dec(&ses->server->inSend);
525 midQ->when_sent = jiffies; 546 midQ->when_sent = jiffies;
@@ -711,7 +732,8 @@ SendReceive(const unsigned int xid, struct cifsSesInfo *ses,
711 atomic_inc(&ses->server->inSend); 732 atomic_inc(&ses->server->inSend);
712#endif 733#endif
713 rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length, 734 rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
714 (struct sockaddr *) &(ses->server->addr.sockAddr)); 735 (struct sockaddr *) &(ses->server->addr.sockAddr),
736 ses->server->noblocksnd);
715#ifdef CONFIG_CIFS_STATS2 737#ifdef CONFIG_CIFS_STATS2
716 atomic_dec(&ses->server->inSend); 738 atomic_dec(&ses->server->inSend);
717 midQ->when_sent = jiffies; 739 midQ->when_sent = jiffies;
@@ -851,7 +873,8 @@ send_nt_cancel(struct cifsTconInfo *tcon, struct smb_hdr *in_buf,
851 return rc; 873 return rc;
852 } 874 }
853 rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length, 875 rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
854 (struct sockaddr *) &(ses->server->addr.sockAddr)); 876 (struct sockaddr *) &(ses->server->addr.sockAddr),
877 ses->server->noblocksnd);
855 up(&ses->server->tcpSem); 878 up(&ses->server->tcpSem);
856 return rc; 879 return rc;
857} 880}
@@ -941,7 +964,8 @@ SendReceiveBlockingLock(const unsigned int xid, struct cifsTconInfo *tcon,
941 atomic_inc(&ses->server->inSend); 964 atomic_inc(&ses->server->inSend);
942#endif 965#endif
943 rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length, 966 rc = smb_send(ses->server->ssocket, in_buf, in_buf->smb_buf_length,
944 (struct sockaddr *) &(ses->server->addr.sockAddr)); 967 (struct sockaddr *) &(ses->server->addr.sockAddr),
968 ses->server->noblocksnd);
945#ifdef CONFIG_CIFS_STATS2 969#ifdef CONFIG_CIFS_STATS2
946 atomic_dec(&ses->server->inSend); 970 atomic_dec(&ses->server->inSend);
947 midQ->when_sent = jiffies; 971 midQ->when_sent = jiffies;
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index e5717a4fae67..5dec6d1356c4 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -2390,13 +2390,12 @@ static void ext3_write_super (struct super_block * sb)
2390 2390
2391static int ext3_sync_fs(struct super_block *sb, int wait) 2391static int ext3_sync_fs(struct super_block *sb, int wait)
2392{ 2392{
2393 tid_t target;
2394
2395 sb->s_dirt = 0; 2393 sb->s_dirt = 0;
2396 if (journal_start_commit(EXT3_SB(sb)->s_journal, &target)) { 2394 if (wait)
2397 if (wait) 2395 ext3_force_commit(sb);
2398 log_wait_commit(EXT3_SB(sb)->s_journal, target); 2396 else
2399 } 2397 journal_start_commit(EXT3_SB(sb)->s_journal, NULL);
2398
2400 return 0; 2399 return 0;
2401} 2400}
2402 2401
diff --git a/fs/fat/Makefile b/fs/fat/Makefile
index bfb5f06cf2c8..e06190322c1c 100644
--- a/fs/fat/Makefile
+++ b/fs/fat/Makefile
@@ -3,5 +3,9 @@
3# 3#
4 4
5obj-$(CONFIG_FAT_FS) += fat.o 5obj-$(CONFIG_FAT_FS) += fat.o
6obj-$(CONFIG_VFAT_FS) += vfat.o
7obj-$(CONFIG_MSDOS_FS) += msdos.o
6 8
7fat-objs := cache.o dir.o fatent.o file.o inode.o misc.o 9fat-y := cache.o dir.o fatent.o file.o inode.o misc.o
10vfat-y := namei_vfat.o
11msdos-y := namei_msdos.o
diff --git a/fs/fat/cache.c b/fs/fat/cache.c
index 3222f51c41cf..b42602298087 100644
--- a/fs/fat/cache.c
+++ b/fs/fat/cache.c
@@ -9,8 +9,8 @@
9 */ 9 */
10 10
11#include <linux/fs.h> 11#include <linux/fs.h>
12#include <linux/msdos_fs.h>
13#include <linux/buffer_head.h> 12#include <linux/buffer_head.h>
13#include "fat.h"
14 14
15/* this must be > 0. */ 15/* this must be > 0. */
16#define FAT_MAX_CACHE 8 16#define FAT_MAX_CACHE 8
@@ -293,10 +293,12 @@ static int fat_bmap_cluster(struct inode *inode, int cluster)
293} 293}
294 294
295int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys, 295int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
296 unsigned long *mapped_blocks) 296 unsigned long *mapped_blocks, int create)
297{ 297{
298 struct super_block *sb = inode->i_sb; 298 struct super_block *sb = inode->i_sb;
299 struct msdos_sb_info *sbi = MSDOS_SB(sb); 299 struct msdos_sb_info *sbi = MSDOS_SB(sb);
300 const unsigned long blocksize = sb->s_blocksize;
301 const unsigned char blocksize_bits = sb->s_blocksize_bits;
300 sector_t last_block; 302 sector_t last_block;
301 int cluster, offset; 303 int cluster, offset;
302 304
@@ -309,10 +311,21 @@ int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
309 } 311 }
310 return 0; 312 return 0;
311 } 313 }
312 last_block = (MSDOS_I(inode)->mmu_private + (sb->s_blocksize - 1)) 314
313 >> sb->s_blocksize_bits; 315 last_block = (i_size_read(inode) + (blocksize - 1)) >> blocksize_bits;
314 if (sector >= last_block) 316 if (sector >= last_block) {
315 return 0; 317 if (!create)
318 return 0;
319
320 /*
321 * ->mmu_private can access on only allocation path.
322 * (caller must hold ->i_mutex)
323 */
324 last_block = (MSDOS_I(inode)->mmu_private + (blocksize - 1))
325 >> blocksize_bits;
326 if (sector >= last_block)
327 return 0;
328 }
316 329
317 cluster = sector >> (sbi->cluster_bits - sb->s_blocksize_bits); 330 cluster = sector >> (sbi->cluster_bits - sb->s_blocksize_bits);
318 offset = sector & (sbi->sec_per_clus - 1); 331 offset = sector & (sbi->sec_per_clus - 1);
diff --git a/fs/fat/dir.c b/fs/fat/dir.c
index bae1c3292522..67e058357098 100644
--- a/fs/fat/dir.c
+++ b/fs/fat/dir.c
@@ -16,11 +16,11 @@
16#include <linux/module.h> 16#include <linux/module.h>
17#include <linux/slab.h> 17#include <linux/slab.h>
18#include <linux/time.h> 18#include <linux/time.h>
19#include <linux/msdos_fs.h>
20#include <linux/smp_lock.h> 19#include <linux/smp_lock.h>
21#include <linux/buffer_head.h> 20#include <linux/buffer_head.h>
22#include <linux/compat.h> 21#include <linux/compat.h>
23#include <asm/uaccess.h> 22#include <asm/uaccess.h>
23#include "fat.h"
24 24
25static inline loff_t fat_make_i_pos(struct super_block *sb, 25static inline loff_t fat_make_i_pos(struct super_block *sb,
26 struct buffer_head *bh, 26 struct buffer_head *bh,
@@ -77,7 +77,7 @@ next:
77 77
78 *bh = NULL; 78 *bh = NULL;
79 iblock = *pos >> sb->s_blocksize_bits; 79 iblock = *pos >> sb->s_blocksize_bits;
80 err = fat_bmap(dir, iblock, &phys, &mapped_blocks); 80 err = fat_bmap(dir, iblock, &phys, &mapped_blocks, 0);
81 if (err || !phys) 81 if (err || !phys)
82 return -1; /* beyond EOF or error */ 82 return -1; /* beyond EOF or error */
83 83
@@ -86,7 +86,7 @@ next:
86 *bh = sb_bread(sb, phys); 86 *bh = sb_bread(sb, phys);
87 if (*bh == NULL) { 87 if (*bh == NULL) {
88 printk(KERN_ERR "FAT: Directory bread(block %llu) failed\n", 88 printk(KERN_ERR "FAT: Directory bread(block %llu) failed\n",
89 (unsigned long long)phys); 89 (llu)phys);
90 /* skip this block */ 90 /* skip this block */
91 *pos = (iblock + 1) << sb->s_blocksize_bits; 91 *pos = (iblock + 1) << sb->s_blocksize_bits;
92 goto next; 92 goto next;
@@ -373,9 +373,10 @@ parse_record:
373 if (de->attr == ATTR_EXT) { 373 if (de->attr == ATTR_EXT) {
374 int status = fat_parse_long(inode, &cpos, &bh, &de, 374 int status = fat_parse_long(inode, &cpos, &bh, &de,
375 &unicode, &nr_slots); 375 &unicode, &nr_slots);
376 if (status < 0) 376 if (status < 0) {
377 return status; 377 err = status;
378 else if (status == PARSE_INVALID) 378 goto end_of_dir;
379 } else if (status == PARSE_INVALID)
379 continue; 380 continue;
380 else if (status == PARSE_NOT_LONGNAME) 381 else if (status == PARSE_NOT_LONGNAME)
381 goto parse_record; 382 goto parse_record;
@@ -832,6 +833,7 @@ static long fat_compat_dir_ioctl(struct file *filp, unsigned cmd,
832#endif /* CONFIG_COMPAT */ 833#endif /* CONFIG_COMPAT */
833 834
834const struct file_operations fat_dir_operations = { 835const struct file_operations fat_dir_operations = {
836 .llseek = generic_file_llseek,
835 .read = generic_read_dir, 837 .read = generic_read_dir,
836 .readdir = fat_readdir, 838 .readdir = fat_readdir,
837 .ioctl = fat_dir_ioctl, 839 .ioctl = fat_dir_ioctl,
@@ -1089,6 +1091,7 @@ int fat_alloc_new_dir(struct inode *dir, struct timespec *ts)
1089 struct msdos_dir_entry *de; 1091 struct msdos_dir_entry *de;
1090 sector_t blknr; 1092 sector_t blknr;
1091 __le16 date, time; 1093 __le16 date, time;
1094 u8 time_cs;
1092 int err, cluster; 1095 int err, cluster;
1093 1096
1094 err = fat_alloc_clusters(dir, &cluster, 1); 1097 err = fat_alloc_clusters(dir, &cluster, 1);
@@ -1102,7 +1105,7 @@ int fat_alloc_new_dir(struct inode *dir, struct timespec *ts)
1102 goto error_free; 1105 goto error_free;
1103 } 1106 }
1104 1107
1105 fat_date_unix2dos(ts->tv_sec, &time, &date, sbi->options.tz_utc); 1108 fat_time_unix2fat(sbi, ts, &time, &date, &time_cs);
1106 1109
1107 de = (struct msdos_dir_entry *)bhs[0]->b_data; 1110 de = (struct msdos_dir_entry *)bhs[0]->b_data;
1108 /* filling the new directory slots ("." and ".." entries) */ 1111 /* filling the new directory slots ("." and ".." entries) */
@@ -1112,13 +1115,14 @@ int fat_alloc_new_dir(struct inode *dir, struct timespec *ts)
1112 de[0].lcase = de[1].lcase = 0; 1115 de[0].lcase = de[1].lcase = 0;
1113 de[0].time = de[1].time = time; 1116 de[0].time = de[1].time = time;
1114 de[0].date = de[1].date = date; 1117 de[0].date = de[1].date = date;
1115 de[0].ctime_cs = de[1].ctime_cs = 0;
1116 if (sbi->options.isvfat) { 1118 if (sbi->options.isvfat) {
1117 /* extra timestamps */ 1119 /* extra timestamps */
1118 de[0].ctime = de[1].ctime = time; 1120 de[0].ctime = de[1].ctime = time;
1121 de[0].ctime_cs = de[1].ctime_cs = time_cs;
1119 de[0].adate = de[0].cdate = de[1].adate = de[1].cdate = date; 1122 de[0].adate = de[0].cdate = de[1].adate = de[1].cdate = date;
1120 } else { 1123 } else {
1121 de[0].ctime = de[1].ctime = 0; 1124 de[0].ctime = de[1].ctime = 0;
1125 de[0].ctime_cs = de[1].ctime_cs = 0;
1122 de[0].adate = de[0].cdate = de[1].adate = de[1].cdate = 0; 1126 de[0].adate = de[0].cdate = de[1].adate = de[1].cdate = 0;
1123 } 1127 }
1124 de[0].start = cpu_to_le16(cluster); 1128 de[0].start = cpu_to_le16(cluster);
diff --git a/fs/fat/fat.h b/fs/fat/fat.h
new file mode 100644
index 000000000000..ea440d65819c
--- /dev/null
+++ b/fs/fat/fat.h
@@ -0,0 +1,329 @@
1#ifndef _FAT_H
2#define _FAT_H
3
4#include <linux/buffer_head.h>
5#include <linux/string.h>
6#include <linux/nls.h>
7#include <linux/fs.h>
8#include <linux/mutex.h>
9#include <linux/msdos_fs.h>
10
11/*
12 * vfat shortname flags
13 */
14#define VFAT_SFN_DISPLAY_LOWER 0x0001 /* convert to lowercase for display */
15#define VFAT_SFN_DISPLAY_WIN95 0x0002 /* emulate win95 rule for display */
16#define VFAT_SFN_DISPLAY_WINNT 0x0004 /* emulate winnt rule for display */
17#define VFAT_SFN_CREATE_WIN95 0x0100 /* emulate win95 rule for create */
18#define VFAT_SFN_CREATE_WINNT 0x0200 /* emulate winnt rule for create */
19
20struct fat_mount_options {
21 uid_t fs_uid;
22 gid_t fs_gid;
23 unsigned short fs_fmask;
24 unsigned short fs_dmask;
25 unsigned short codepage; /* Codepage for shortname conversions */
26 char *iocharset; /* Charset used for filename input/display */
27 unsigned short shortname; /* flags for shortname display/create rule */
28 unsigned char name_check; /* r = relaxed, n = normal, s = strict */
29 unsigned short allow_utime;/* permission for setting the [am]time */
30 unsigned quiet:1, /* set = fake successful chmods and chowns */
31 showexec:1, /* set = only set x bit for com/exe/bat */
32 sys_immutable:1, /* set = system files are immutable */
33 dotsOK:1, /* set = hidden and system files are named '.filename' */
34 isvfat:1, /* 0=no vfat long filename support, 1=vfat support */
35 utf8:1, /* Use of UTF-8 character set (Default) */
36 unicode_xlate:1, /* create escape sequences for unhandled Unicode */
37 numtail:1, /* Does first alias have a numeric '~1' type tail? */
38 flush:1, /* write things quickly */
39 nocase:1, /* Does this need case conversion? 0=need case conversion*/
40 usefree:1, /* Use free_clusters for FAT32 */
41 tz_utc:1, /* Filesystem timestamps are in UTC */
42 rodir:1; /* allow ATTR_RO for directory */
43};
44
45#define FAT_HASH_BITS 8
46#define FAT_HASH_SIZE (1UL << FAT_HASH_BITS)
47
48/*
49 * MS-DOS file system in-core superblock data
50 */
51struct msdos_sb_info {
52 unsigned short sec_per_clus; /* sectors/cluster */
53 unsigned short cluster_bits; /* log2(cluster_size) */
54 unsigned int cluster_size; /* cluster size */
55 unsigned char fats,fat_bits; /* number of FATs, FAT bits (12 or 16) */
56 unsigned short fat_start;
57 unsigned long fat_length; /* FAT start & length (sec.) */
58 unsigned long dir_start;
59 unsigned short dir_entries; /* root dir start & entries */
60 unsigned long data_start; /* first data sector */
61 unsigned long max_cluster; /* maximum cluster number */
62 unsigned long root_cluster; /* first cluster of the root directory */
63 unsigned long fsinfo_sector; /* sector number of FAT32 fsinfo */
64 struct mutex fat_lock;
65 unsigned int prev_free; /* previously allocated cluster number */
66 unsigned int free_clusters; /* -1 if undefined */
67 unsigned int free_clus_valid; /* is free_clusters valid? */
68 struct fat_mount_options options;
69 struct nls_table *nls_disk; /* Codepage used on disk */
70 struct nls_table *nls_io; /* Charset used for input and display */
71 const void *dir_ops; /* Opaque; default directory operations */
72 int dir_per_block; /* dir entries per block */
73 int dir_per_block_bits; /* log2(dir_per_block) */
74
75 int fatent_shift;
76 struct fatent_operations *fatent_ops;
77
78 spinlock_t inode_hash_lock;
79 struct hlist_head inode_hashtable[FAT_HASH_SIZE];
80};
81
82#define FAT_CACHE_VALID 0 /* special case for valid cache */
83
84/*
85 * MS-DOS file system inode data in memory
86 */
87struct msdos_inode_info {
88 spinlock_t cache_lru_lock;
89 struct list_head cache_lru;
90 int nr_caches;
91 /* for avoiding the race between fat_free() and fat_get_cluster() */
92 unsigned int cache_valid_id;
93
94 /* NOTE: mmu_private is 64bits, so must hold ->i_mutex to access */
95 loff_t mmu_private; /* physically allocated size */
96
97 int i_start; /* first cluster or 0 */
98 int i_logstart; /* logical first cluster */
99 int i_attrs; /* unused attribute bits */
100 loff_t i_pos; /* on-disk position of directory entry or 0 */
101 struct hlist_node i_fat_hash; /* hash by i_location */
102 struct inode vfs_inode;
103};
104
105struct fat_slot_info {
106 loff_t i_pos; /* on-disk position of directory entry */
107 loff_t slot_off; /* offset for slot or de start */
108 int nr_slots; /* number of slots + 1(de) in filename */
109 struct msdos_dir_entry *de;
110 struct buffer_head *bh;
111};
112
113static inline struct msdos_sb_info *MSDOS_SB(struct super_block *sb)
114{
115 return sb->s_fs_info;
116}
117
118static inline struct msdos_inode_info *MSDOS_I(struct inode *inode)
119{
120 return container_of(inode, struct msdos_inode_info, vfs_inode);
121}
122
123/*
124 * If ->i_mode can't hold S_IWUGO (i.e. ATTR_RO), we use ->i_attrs to
125 * save ATTR_RO instead of ->i_mode.
126 *
127 * If it's directory and !sbi->options.rodir, ATTR_RO isn't read-only
128 * bit, it's just used as flag for app.
129 */
130static inline int fat_mode_can_hold_ro(struct inode *inode)
131{
132 struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
133 mode_t mask;
134
135 if (S_ISDIR(inode->i_mode)) {
136 if (!sbi->options.rodir)
137 return 0;
138 mask = ~sbi->options.fs_dmask;
139 } else
140 mask = ~sbi->options.fs_fmask;
141
142 if (!(mask & S_IWUGO))
143 return 0;
144 return 1;
145}
146
147/* Convert attribute bits and a mask to the UNIX mode. */
148static inline mode_t fat_make_mode(struct msdos_sb_info *sbi,
149 u8 attrs, mode_t mode)
150{
151 if (attrs & ATTR_RO && !((attrs & ATTR_DIR) && !sbi->options.rodir))
152 mode &= ~S_IWUGO;
153
154 if (attrs & ATTR_DIR)
155 return (mode & ~sbi->options.fs_dmask) | S_IFDIR;
156 else
157 return (mode & ~sbi->options.fs_fmask) | S_IFREG;
158}
159
160/* Return the FAT attribute byte for this inode */
161static inline u8 fat_make_attrs(struct inode *inode)
162{
163 u8 attrs = MSDOS_I(inode)->i_attrs;
164 if (S_ISDIR(inode->i_mode))
165 attrs |= ATTR_DIR;
166 if (fat_mode_can_hold_ro(inode) && !(inode->i_mode & S_IWUGO))
167 attrs |= ATTR_RO;
168 return attrs;
169}
170
171static inline void fat_save_attrs(struct inode *inode, u8 attrs)
172{
173 if (fat_mode_can_hold_ro(inode))
174 MSDOS_I(inode)->i_attrs = attrs & ATTR_UNUSED;
175 else
176 MSDOS_I(inode)->i_attrs = attrs & (ATTR_UNUSED | ATTR_RO);
177}
178
179static inline unsigned char fat_checksum(const __u8 *name)
180{
181 unsigned char s = name[0];
182 s = (s<<7) + (s>>1) + name[1]; s = (s<<7) + (s>>1) + name[2];
183 s = (s<<7) + (s>>1) + name[3]; s = (s<<7) + (s>>1) + name[4];
184 s = (s<<7) + (s>>1) + name[5]; s = (s<<7) + (s>>1) + name[6];
185 s = (s<<7) + (s>>1) + name[7]; s = (s<<7) + (s>>1) + name[8];
186 s = (s<<7) + (s>>1) + name[9]; s = (s<<7) + (s>>1) + name[10];
187 return s;
188}
189
190static inline sector_t fat_clus_to_blknr(struct msdos_sb_info *sbi, int clus)
191{
192 return ((sector_t)clus - FAT_START_ENT) * sbi->sec_per_clus
193 + sbi->data_start;
194}
195
196static inline void fat16_towchar(wchar_t *dst, const __u8 *src, size_t len)
197{
198#ifdef __BIG_ENDIAN
199 while (len--) {
200 *dst++ = src[0] | (src[1] << 8);
201 src += 2;
202 }
203#else
204 memcpy(dst, src, len * 2);
205#endif
206}
207
208static inline void fatwchar_to16(__u8 *dst, const wchar_t *src, size_t len)
209{
210#ifdef __BIG_ENDIAN
211 while (len--) {
212 dst[0] = *src & 0x00FF;
213 dst[1] = (*src & 0xFF00) >> 8;
214 dst += 2;
215 src++;
216 }
217#else
218 memcpy(dst, src, len * 2);
219#endif
220}
221
222/* fat/cache.c */
223extern void fat_cache_inval_inode(struct inode *inode);
224extern int fat_get_cluster(struct inode *inode, int cluster,
225 int *fclus, int *dclus);
226extern int fat_bmap(struct inode *inode, sector_t sector, sector_t *phys,
227 unsigned long *mapped_blocks, int create);
228
229/* fat/dir.c */
230extern const struct file_operations fat_dir_operations;
231extern int fat_search_long(struct inode *inode, const unsigned char *name,
232 int name_len, struct fat_slot_info *sinfo);
233extern int fat_dir_empty(struct inode *dir);
234extern int fat_subdirs(struct inode *dir);
235extern int fat_scan(struct inode *dir, const unsigned char *name,
236 struct fat_slot_info *sinfo);
237extern int fat_get_dotdot_entry(struct inode *dir, struct buffer_head **bh,
238 struct msdos_dir_entry **de, loff_t *i_pos);
239extern int fat_alloc_new_dir(struct inode *dir, struct timespec *ts);
240extern int fat_add_entries(struct inode *dir, void *slots, int nr_slots,
241 struct fat_slot_info *sinfo);
242extern int fat_remove_entries(struct inode *dir, struct fat_slot_info *sinfo);
243
244/* fat/fatent.c */
245struct fat_entry {
246 int entry;
247 union {
248 u8 *ent12_p[2];
249 __le16 *ent16_p;
250 __le32 *ent32_p;
251 } u;
252 int nr_bhs;
253 struct buffer_head *bhs[2];
254};
255
256static inline void fatent_init(struct fat_entry *fatent)
257{
258 fatent->nr_bhs = 0;
259 fatent->entry = 0;
260 fatent->u.ent32_p = NULL;
261 fatent->bhs[0] = fatent->bhs[1] = NULL;
262}
263
264static inline void fatent_set_entry(struct fat_entry *fatent, int entry)
265{
266 fatent->entry = entry;
267 fatent->u.ent32_p = NULL;
268}
269
270static inline void fatent_brelse(struct fat_entry *fatent)
271{
272 int i;
273 fatent->u.ent32_p = NULL;
274 for (i = 0; i < fatent->nr_bhs; i++)
275 brelse(fatent->bhs[i]);
276 fatent->nr_bhs = 0;
277 fatent->bhs[0] = fatent->bhs[1] = NULL;
278}
279
280extern void fat_ent_access_init(struct super_block *sb);
281extern int fat_ent_read(struct inode *inode, struct fat_entry *fatent,
282 int entry);
283extern int fat_ent_write(struct inode *inode, struct fat_entry *fatent,
284 int new, int wait);
285extern int fat_alloc_clusters(struct inode *inode, int *cluster,
286 int nr_cluster);
287extern int fat_free_clusters(struct inode *inode, int cluster);
288extern int fat_count_free_clusters(struct super_block *sb);
289
290/* fat/file.c */
291extern int fat_generic_ioctl(struct inode *inode, struct file *filp,
292 unsigned int cmd, unsigned long arg);
293extern const struct file_operations fat_file_operations;
294extern const struct inode_operations fat_file_inode_operations;
295extern int fat_setattr(struct dentry * dentry, struct iattr * attr);
296extern void fat_truncate(struct inode *inode);
297extern int fat_getattr(struct vfsmount *mnt, struct dentry *dentry,
298 struct kstat *stat);
299
300/* fat/inode.c */
301extern void fat_attach(struct inode *inode, loff_t i_pos);
302extern void fat_detach(struct inode *inode);
303extern struct inode *fat_iget(struct super_block *sb, loff_t i_pos);
304extern struct inode *fat_build_inode(struct super_block *sb,
305 struct msdos_dir_entry *de, loff_t i_pos);
306extern int fat_sync_inode(struct inode *inode);
307extern int fat_fill_super(struct super_block *sb, void *data, int silent,
308 const struct inode_operations *fs_dir_inode_ops, int isvfat);
309
310extern int fat_flush_inodes(struct super_block *sb, struct inode *i1,
311 struct inode *i2);
312/* fat/misc.c */
313extern void fat_fs_panic(struct super_block *s, const char *fmt, ...)
314 __attribute__ ((format (printf, 2, 3))) __cold;
315extern void fat_clusters_flush(struct super_block *sb);
316extern int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster);
317extern void fat_time_fat2unix(struct msdos_sb_info *sbi, struct timespec *ts,
318 __le16 __time, __le16 __date, u8 time_cs);
319extern void fat_time_unix2fat(struct msdos_sb_info *sbi, struct timespec *ts,
320 __le16 *time, __le16 *date, u8 *time_cs);
321extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs);
322
323int fat_cache_init(void);
324void fat_cache_destroy(void);
325
326/* helper for printk */
327typedef unsigned long long llu;
328
329#endif /* !_FAT_H */
diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c
index fb98b3d847ed..da6eea47872f 100644
--- a/fs/fat/fatent.c
+++ b/fs/fat/fatent.c
@@ -7,6 +7,7 @@
7#include <linux/fs.h> 7#include <linux/fs.h>
8#include <linux/msdos_fs.h> 8#include <linux/msdos_fs.h>
9#include <linux/blkdev.h> 9#include <linux/blkdev.h>
10#include "fat.h"
10 11
11struct fatent_operations { 12struct fatent_operations {
12 void (*ent_blocknr)(struct super_block *, int, int *, sector_t *); 13 void (*ent_blocknr)(struct super_block *, int, int *, sector_t *);
@@ -92,8 +93,7 @@ static int fat12_ent_bread(struct super_block *sb, struct fat_entry *fatent,
92err_brelse: 93err_brelse:
93 brelse(bhs[0]); 94 brelse(bhs[0]);
94err: 95err:
95 printk(KERN_ERR "FAT: FAT read failed (blocknr %llu)\n", 96 printk(KERN_ERR "FAT: FAT read failed (blocknr %llu)\n", (llu)blocknr);
96 (unsigned long long)blocknr);
97 return -EIO; 97 return -EIO;
98} 98}
99 99
@@ -106,7 +106,7 @@ static int fat_ent_bread(struct super_block *sb, struct fat_entry *fatent,
106 fatent->bhs[0] = sb_bread(sb, blocknr); 106 fatent->bhs[0] = sb_bread(sb, blocknr);
107 if (!fatent->bhs[0]) { 107 if (!fatent->bhs[0]) {
108 printk(KERN_ERR "FAT: FAT read failed (blocknr %llu)\n", 108 printk(KERN_ERR "FAT: FAT read failed (blocknr %llu)\n",
109 (unsigned long long)blocknr); 109 (llu)blocknr);
110 return -EIO; 110 return -EIO;
111 } 111 }
112 fatent->nr_bhs = 1; 112 fatent->nr_bhs = 1;
@@ -316,10 +316,20 @@ static inline int fat_ent_update_ptr(struct super_block *sb,
316 /* Is this fatent's blocks including this entry? */ 316 /* Is this fatent's blocks including this entry? */
317 if (!fatent->nr_bhs || bhs[0]->b_blocknr != blocknr) 317 if (!fatent->nr_bhs || bhs[0]->b_blocknr != blocknr)
318 return 0; 318 return 0;
319 /* Does this entry need the next block? */ 319 if (sbi->fat_bits == 12) {
320 if (sbi->fat_bits == 12 && (offset + 1) >= sb->s_blocksize) { 320 if ((offset + 1) < sb->s_blocksize) {
321 if (fatent->nr_bhs != 2 || bhs[1]->b_blocknr != (blocknr + 1)) 321 /* This entry is on bhs[0]. */
322 return 0; 322 if (fatent->nr_bhs == 2) {
323 brelse(bhs[1]);
324 fatent->nr_bhs = 1;
325 }
326 } else {
327 /* This entry needs the next block. */
328 if (fatent->nr_bhs != 2)
329 return 0;
330 if (bhs[1]->b_blocknr != (blocknr + 1))
331 return 0;
332 }
323 } 333 }
324 ops->ent_set_ptr(fatent, offset); 334 ops->ent_set_ptr(fatent, offset);
325 return 1; 335 return 1;
diff --git a/fs/fat/file.c b/fs/fat/file.c
index ddde37025ca6..f06a4e525ece 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -10,13 +10,13 @@
10#include <linux/module.h> 10#include <linux/module.h>
11#include <linux/mount.h> 11#include <linux/mount.h>
12#include <linux/time.h> 12#include <linux/time.h>
13#include <linux/msdos_fs.h>
14#include <linux/buffer_head.h> 13#include <linux/buffer_head.h>
15#include <linux/writeback.h> 14#include <linux/writeback.h>
16#include <linux/backing-dev.h> 15#include <linux/backing-dev.h>
17#include <linux/blkdev.h> 16#include <linux/blkdev.h>
18#include <linux/fsnotify.h> 17#include <linux/fsnotify.h>
19#include <linux/security.h> 18#include <linux/security.h>
19#include "fat.h"
20 20
21int fat_generic_ioctl(struct inode *inode, struct file *filp, 21int fat_generic_ioctl(struct inode *inode, struct file *filp,
22 unsigned int cmd, unsigned long arg) 22 unsigned int cmd, unsigned long arg)
@@ -29,10 +29,9 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
29 { 29 {
30 u32 attr; 30 u32 attr;
31 31
32 if (inode->i_ino == MSDOS_ROOT_INO) 32 mutex_lock(&inode->i_mutex);
33 attr = ATTR_DIR; 33 attr = fat_make_attrs(inode);
34 else 34 mutex_unlock(&inode->i_mutex);
35 attr = fat_attr(inode);
36 35
37 return put_user(attr, user_attr); 36 return put_user(attr, user_attr);
38 } 37 }
@@ -62,20 +61,16 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
62 /* Merge in ATTR_VOLUME and ATTR_DIR */ 61 /* Merge in ATTR_VOLUME and ATTR_DIR */
63 attr |= (MSDOS_I(inode)->i_attrs & ATTR_VOLUME) | 62 attr |= (MSDOS_I(inode)->i_attrs & ATTR_VOLUME) |
64 (is_dir ? ATTR_DIR : 0); 63 (is_dir ? ATTR_DIR : 0);
65 oldattr = fat_attr(inode); 64 oldattr = fat_make_attrs(inode);
66 65
67 /* Equivalent to a chmod() */ 66 /* Equivalent to a chmod() */
68 ia.ia_valid = ATTR_MODE | ATTR_CTIME; 67 ia.ia_valid = ATTR_MODE | ATTR_CTIME;
69 ia.ia_ctime = current_fs_time(inode->i_sb); 68 ia.ia_ctime = current_fs_time(inode->i_sb);
70 if (is_dir) { 69 if (is_dir)
71 ia.ia_mode = MSDOS_MKMODE(attr, 70 ia.ia_mode = fat_make_mode(sbi, attr, S_IRWXUGO);
72 S_IRWXUGO & ~sbi->options.fs_dmask) 71 else {
73 | S_IFDIR; 72 ia.ia_mode = fat_make_mode(sbi, attr,
74 } else { 73 S_IRUGO | S_IWUGO | (inode->i_mode & S_IXUGO));
75 ia.ia_mode = MSDOS_MKMODE(attr,
76 (S_IRUGO | S_IWUGO | (inode->i_mode & S_IXUGO))
77 & ~sbi->options.fs_fmask)
78 | S_IFREG;
79 } 74 }
80 75
81 /* The root directory has no attributes */ 76 /* The root directory has no attributes */
@@ -115,7 +110,7 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
115 inode->i_flags &= S_IMMUTABLE; 110 inode->i_flags &= S_IMMUTABLE;
116 } 111 }
117 112
118 MSDOS_I(inode)->i_attrs = attr & ATTR_UNUSED; 113 fat_save_attrs(inode, attr);
119 mark_inode_dirty(inode); 114 mark_inode_dirty(inode);
120up: 115up:
121 mnt_drop_write(filp->f_path.mnt); 116 mnt_drop_write(filp->f_path.mnt);
@@ -274,7 +269,7 @@ static int fat_sanitize_mode(const struct msdos_sb_info *sbi,
274 269
275 /* 270 /*
276 * Note, the basic check is already done by a caller of 271 * Note, the basic check is already done by a caller of
277 * (attr->ia_mode & ~MSDOS_VALID_MODE) 272 * (attr->ia_mode & ~FAT_VALID_MODE)
278 */ 273 */
279 274
280 if (S_ISREG(inode->i_mode)) 275 if (S_ISREG(inode->i_mode))
@@ -287,11 +282,18 @@ static int fat_sanitize_mode(const struct msdos_sb_info *sbi,
287 /* 282 /*
288 * Of the r and x bits, all (subject to umask) must be present. Of the 283 * Of the r and x bits, all (subject to umask) must be present. Of the
289 * w bits, either all (subject to umask) or none must be present. 284 * w bits, either all (subject to umask) or none must be present.
285 *
286 * If fat_mode_can_hold_ro(inode) is false, can't change w bits.
290 */ 287 */
291 if ((perm & (S_IRUGO | S_IXUGO)) != (inode->i_mode & (S_IRUGO|S_IXUGO))) 288 if ((perm & (S_IRUGO | S_IXUGO)) != (inode->i_mode & (S_IRUGO|S_IXUGO)))
292 return -EPERM; 289 return -EPERM;
293 if ((perm & S_IWUGO) && ((perm & S_IWUGO) != (S_IWUGO & ~mask))) 290 if (fat_mode_can_hold_ro(inode)) {
294 return -EPERM; 291 if ((perm & S_IWUGO) && ((perm & S_IWUGO) != (S_IWUGO & ~mask)))
292 return -EPERM;
293 } else {
294 if ((perm & S_IWUGO) != (S_IWUGO & ~mask))
295 return -EPERM;
296 }
295 297
296 *mode_ptr &= S_IFMT | perm; 298 *mode_ptr &= S_IFMT | perm;
297 299
@@ -314,13 +316,15 @@ static int fat_allow_set_time(struct msdos_sb_info *sbi, struct inode *inode)
314} 316}
315 317
316#define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET) 318#define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
319/* valid file mode bits */
320#define FAT_VALID_MODE (S_IFREG | S_IFDIR | S_IRWXUGO)
317 321
318int fat_setattr(struct dentry *dentry, struct iattr *attr) 322int fat_setattr(struct dentry *dentry, struct iattr *attr)
319{ 323{
320 struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb); 324 struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb);
321 struct inode *inode = dentry->d_inode; 325 struct inode *inode = dentry->d_inode;
322 int error = 0;
323 unsigned int ia_valid; 326 unsigned int ia_valid;
327 int error;
324 328
325 /* 329 /*
326 * Expand the file. Since inode_setattr() updates ->i_size 330 * Expand the file. Since inode_setattr() updates ->i_size
@@ -356,7 +360,7 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
356 ((attr->ia_valid & ATTR_GID) && 360 ((attr->ia_valid & ATTR_GID) &&
357 (attr->ia_gid != sbi->options.fs_gid)) || 361 (attr->ia_gid != sbi->options.fs_gid)) ||
358 ((attr->ia_valid & ATTR_MODE) && 362 ((attr->ia_valid & ATTR_MODE) &&
359 (attr->ia_mode & ~MSDOS_VALID_MODE))) 363 (attr->ia_mode & ~FAT_VALID_MODE)))
360 error = -EPERM; 364 error = -EPERM;
361 365
362 if (error) { 366 if (error) {
@@ -374,7 +378,8 @@ int fat_setattr(struct dentry *dentry, struct iattr *attr)
374 attr->ia_valid &= ~ATTR_MODE; 378 attr->ia_valid &= ~ATTR_MODE;
375 } 379 }
376 380
377 error = inode_setattr(inode, attr); 381 if (attr->ia_valid)
382 error = inode_setattr(inode, attr);
378out: 383out:
379 return error; 384 return error;
380} 385}
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 2b2eec1283bf..bdd8fb7be2ca 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -16,7 +16,6 @@
16#include <linux/slab.h> 16#include <linux/slab.h>
17#include <linux/smp_lock.h> 17#include <linux/smp_lock.h>
18#include <linux/seq_file.h> 18#include <linux/seq_file.h>
19#include <linux/msdos_fs.h>
20#include <linux/pagemap.h> 19#include <linux/pagemap.h>
21#include <linux/mpage.h> 20#include <linux/mpage.h>
22#include <linux/buffer_head.h> 21#include <linux/buffer_head.h>
@@ -27,7 +26,9 @@
27#include <linux/uio.h> 26#include <linux/uio.h>
28#include <linux/writeback.h> 27#include <linux/writeback.h>
29#include <linux/log2.h> 28#include <linux/log2.h>
29#include <linux/hash.h>
30#include <asm/unaligned.h> 30#include <asm/unaligned.h>
31#include "fat.h"
31 32
32#ifndef CONFIG_FAT_DEFAULT_IOCHARSET 33#ifndef CONFIG_FAT_DEFAULT_IOCHARSET
33/* if user don't select VFAT, this is undefined. */ 34/* if user don't select VFAT, this is undefined. */
@@ -63,7 +64,7 @@ static inline int __fat_get_block(struct inode *inode, sector_t iblock,
63 sector_t phys; 64 sector_t phys;
64 int err, offset; 65 int err, offset;
65 66
66 err = fat_bmap(inode, iblock, &phys, &mapped_blocks); 67 err = fat_bmap(inode, iblock, &phys, &mapped_blocks, create);
67 if (err) 68 if (err)
68 return err; 69 return err;
69 if (phys) { 70 if (phys) {
@@ -93,7 +94,7 @@ static inline int __fat_get_block(struct inode *inode, sector_t iblock,
93 *max_blocks = min(mapped_blocks, *max_blocks); 94 *max_blocks = min(mapped_blocks, *max_blocks);
94 MSDOS_I(inode)->mmu_private += *max_blocks << sb->s_blocksize_bits; 95 MSDOS_I(inode)->mmu_private += *max_blocks << sb->s_blocksize_bits;
95 96
96 err = fat_bmap(inode, iblock, &phys, &mapped_blocks); 97 err = fat_bmap(inode, iblock, &phys, &mapped_blocks, create);
97 if (err) 98 if (err)
98 return err; 99 return err;
99 100
@@ -198,7 +199,14 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
198 199
199static sector_t _fat_bmap(struct address_space *mapping, sector_t block) 200static sector_t _fat_bmap(struct address_space *mapping, sector_t block)
200{ 201{
201 return generic_block_bmap(mapping, block, fat_get_block); 202 sector_t blocknr;
203
204 /* fat_get_cluster() assumes the requested blocknr isn't truncated. */
205 mutex_lock(&mapping->host->i_mutex);
206 blocknr = generic_block_bmap(mapping, block, fat_get_block);
207 mutex_unlock(&mapping->host->i_mutex);
208
209 return blocknr;
202} 210}
203 211
204static const struct address_space_operations fat_aops = { 212static const struct address_space_operations fat_aops = {
@@ -247,25 +255,21 @@ static void fat_hash_init(struct super_block *sb)
247 INIT_HLIST_HEAD(&sbi->inode_hashtable[i]); 255 INIT_HLIST_HEAD(&sbi->inode_hashtable[i]);
248} 256}
249 257
250static inline unsigned long fat_hash(struct super_block *sb, loff_t i_pos) 258static inline unsigned long fat_hash(loff_t i_pos)
251{ 259{
252 unsigned long tmp = (unsigned long)i_pos | (unsigned long) sb; 260 return hash_32(i_pos, FAT_HASH_BITS);
253 tmp = tmp + (tmp >> FAT_HASH_BITS) + (tmp >> FAT_HASH_BITS * 2);
254 return tmp & FAT_HASH_MASK;
255} 261}
256 262
257void fat_attach(struct inode *inode, loff_t i_pos) 263void fat_attach(struct inode *inode, loff_t i_pos)
258{ 264{
259 struct super_block *sb = inode->i_sb; 265 struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
260 struct msdos_sb_info *sbi = MSDOS_SB(sb); 266 struct hlist_head *head = sbi->inode_hashtable + fat_hash(i_pos);
261 267
262 spin_lock(&sbi->inode_hash_lock); 268 spin_lock(&sbi->inode_hash_lock);
263 MSDOS_I(inode)->i_pos = i_pos; 269 MSDOS_I(inode)->i_pos = i_pos;
264 hlist_add_head(&MSDOS_I(inode)->i_fat_hash, 270 hlist_add_head(&MSDOS_I(inode)->i_fat_hash, head);
265 sbi->inode_hashtable + fat_hash(sb, i_pos));
266 spin_unlock(&sbi->inode_hash_lock); 271 spin_unlock(&sbi->inode_hash_lock);
267} 272}
268
269EXPORT_SYMBOL_GPL(fat_attach); 273EXPORT_SYMBOL_GPL(fat_attach);
270 274
271void fat_detach(struct inode *inode) 275void fat_detach(struct inode *inode)
@@ -276,13 +280,12 @@ void fat_detach(struct inode *inode)
276 hlist_del_init(&MSDOS_I(inode)->i_fat_hash); 280 hlist_del_init(&MSDOS_I(inode)->i_fat_hash);
277 spin_unlock(&sbi->inode_hash_lock); 281 spin_unlock(&sbi->inode_hash_lock);
278} 282}
279
280EXPORT_SYMBOL_GPL(fat_detach); 283EXPORT_SYMBOL_GPL(fat_detach);
281 284
282struct inode *fat_iget(struct super_block *sb, loff_t i_pos) 285struct inode *fat_iget(struct super_block *sb, loff_t i_pos)
283{ 286{
284 struct msdos_sb_info *sbi = MSDOS_SB(sb); 287 struct msdos_sb_info *sbi = MSDOS_SB(sb);
285 struct hlist_head *head = sbi->inode_hashtable + fat_hash(sb, i_pos); 288 struct hlist_head *head = sbi->inode_hashtable + fat_hash(i_pos);
286 struct hlist_node *_p; 289 struct hlist_node *_p;
287 struct msdos_inode_info *i; 290 struct msdos_inode_info *i;
288 struct inode *inode = NULL; 291 struct inode *inode = NULL;
@@ -341,8 +344,7 @@ static int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de)
341 344
342 if ((de->attr & ATTR_DIR) && !IS_FREE(de->name)) { 345 if ((de->attr & ATTR_DIR) && !IS_FREE(de->name)) {
343 inode->i_generation &= ~1; 346 inode->i_generation &= ~1;
344 inode->i_mode = MSDOS_MKMODE(de->attr, 347 inode->i_mode = fat_make_mode(sbi, de->attr, S_IRWXUGO);
345 S_IRWXUGO & ~sbi->options.fs_dmask) | S_IFDIR;
346 inode->i_op = sbi->dir_ops; 348 inode->i_op = sbi->dir_ops;
347 inode->i_fop = &fat_dir_operations; 349 inode->i_fop = &fat_dir_operations;
348 350
@@ -359,10 +361,9 @@ static int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de)
359 inode->i_nlink = fat_subdirs(inode); 361 inode->i_nlink = fat_subdirs(inode);
360 } else { /* not a directory */ 362 } else { /* not a directory */
361 inode->i_generation |= 1; 363 inode->i_generation |= 1;
362 inode->i_mode = MSDOS_MKMODE(de->attr, 364 inode->i_mode = fat_make_mode(sbi, de->attr,
363 ((sbi->options.showexec && !is_exec(de->name + 8)) 365 ((sbi->options.showexec && !is_exec(de->name + 8))
364 ? S_IRUGO|S_IWUGO : S_IRWXUGO) 366 ? S_IRUGO|S_IWUGO : S_IRWXUGO));
365 & ~sbi->options.fs_fmask) | S_IFREG;
366 MSDOS_I(inode)->i_start = le16_to_cpu(de->start); 367 MSDOS_I(inode)->i_start = le16_to_cpu(de->start);
367 if (sbi->fat_bits == 32) 368 if (sbi->fat_bits == 32)
368 MSDOS_I(inode)->i_start |= (le16_to_cpu(de->starthi) << 16); 369 MSDOS_I(inode)->i_start |= (le16_to_cpu(de->starthi) << 16);
@@ -378,25 +379,16 @@ static int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de)
378 if (sbi->options.sys_immutable) 379 if (sbi->options.sys_immutable)
379 inode->i_flags |= S_IMMUTABLE; 380 inode->i_flags |= S_IMMUTABLE;
380 } 381 }
381 MSDOS_I(inode)->i_attrs = de->attr & ATTR_UNUSED; 382 fat_save_attrs(inode, de->attr);
383
382 inode->i_blocks = ((inode->i_size + (sbi->cluster_size - 1)) 384 inode->i_blocks = ((inode->i_size + (sbi->cluster_size - 1))
383 & ~((loff_t)sbi->cluster_size - 1)) >> 9; 385 & ~((loff_t)sbi->cluster_size - 1)) >> 9;
384 inode->i_mtime.tv_sec = 386
385 date_dos2unix(le16_to_cpu(de->time), le16_to_cpu(de->date), 387 fat_time_fat2unix(sbi, &inode->i_mtime, de->time, de->date, 0);
386 sbi->options.tz_utc);
387 inode->i_mtime.tv_nsec = 0;
388 if (sbi->options.isvfat) { 388 if (sbi->options.isvfat) {
389 int secs = de->ctime_cs / 100; 389 fat_time_fat2unix(sbi, &inode->i_ctime, de->ctime,
390 int csecs = de->ctime_cs % 100; 390 de->cdate, de->ctime_cs);
391 inode->i_ctime.tv_sec = 391 fat_time_fat2unix(sbi, &inode->i_atime, 0, de->adate, 0);
392 date_dos2unix(le16_to_cpu(de->ctime),
393 le16_to_cpu(de->cdate),
394 sbi->options.tz_utc) + secs;
395 inode->i_ctime.tv_nsec = csecs * 10000000;
396 inode->i_atime.tv_sec =
397 date_dos2unix(0, le16_to_cpu(de->adate),
398 sbi->options.tz_utc);
399 inode->i_atime.tv_nsec = 0;
400 } else 392 } else
401 inode->i_ctime = inode->i_atime = inode->i_mtime; 393 inode->i_ctime = inode->i_atime = inode->i_mtime;
402 394
@@ -443,13 +435,8 @@ static void fat_delete_inode(struct inode *inode)
443 435
444static void fat_clear_inode(struct inode *inode) 436static void fat_clear_inode(struct inode *inode)
445{ 437{
446 struct super_block *sb = inode->i_sb;
447 struct msdos_sb_info *sbi = MSDOS_SB(sb);
448
449 spin_lock(&sbi->inode_hash_lock);
450 fat_cache_inval_inode(inode); 438 fat_cache_inval_inode(inode);
451 hlist_del_init(&MSDOS_I(inode)->i_fat_hash); 439 fat_detach(inode);
452 spin_unlock(&sbi->inode_hash_lock);
453} 440}
454 441
455static void fat_write_super(struct super_block *sb) 442static void fat_write_super(struct super_block *sb)
@@ -555,6 +542,20 @@ static int fat_statfs(struct dentry *dentry, struct kstatfs *buf)
555 return 0; 542 return 0;
556} 543}
557 544
545static inline loff_t fat_i_pos_read(struct msdos_sb_info *sbi,
546 struct inode *inode)
547{
548 loff_t i_pos;
549#if BITS_PER_LONG == 32
550 spin_lock(&sbi->inode_hash_lock);
551#endif
552 i_pos = MSDOS_I(inode)->i_pos;
553#if BITS_PER_LONG == 32
554 spin_unlock(&sbi->inode_hash_lock);
555#endif
556 return i_pos;
557}
558
558static int fat_write_inode(struct inode *inode, int wait) 559static int fat_write_inode(struct inode *inode, int wait)
559{ 560{
560 struct super_block *sb = inode->i_sb; 561 struct super_block *sb = inode->i_sb;
@@ -564,9 +565,12 @@ static int fat_write_inode(struct inode *inode, int wait)
564 loff_t i_pos; 565 loff_t i_pos;
565 int err; 566 int err;
566 567
568 if (inode->i_ino == MSDOS_ROOT_INO)
569 return 0;
570
567retry: 571retry:
568 i_pos = MSDOS_I(inode)->i_pos; 572 i_pos = fat_i_pos_read(sbi, inode);
569 if (inode->i_ino == MSDOS_ROOT_INO || !i_pos) 573 if (!i_pos)
570 return 0; 574 return 0;
571 575
572 bh = sb_bread(sb, i_pos >> sbi->dir_per_block_bits); 576 bh = sb_bread(sb, i_pos >> sbi->dir_per_block_bits);
@@ -588,19 +592,17 @@ retry:
588 raw_entry->size = 0; 592 raw_entry->size = 0;
589 else 593 else
590 raw_entry->size = cpu_to_le32(inode->i_size); 594 raw_entry->size = cpu_to_le32(inode->i_size);
591 raw_entry->attr = fat_attr(inode); 595 raw_entry->attr = fat_make_attrs(inode);
592 raw_entry->start = cpu_to_le16(MSDOS_I(inode)->i_logstart); 596 raw_entry->start = cpu_to_le16(MSDOS_I(inode)->i_logstart);
593 raw_entry->starthi = cpu_to_le16(MSDOS_I(inode)->i_logstart >> 16); 597 raw_entry->starthi = cpu_to_le16(MSDOS_I(inode)->i_logstart >> 16);
594 fat_date_unix2dos(inode->i_mtime.tv_sec, &raw_entry->time, 598 fat_time_unix2fat(sbi, &inode->i_mtime, &raw_entry->time,
595 &raw_entry->date, sbi->options.tz_utc); 599 &raw_entry->date, NULL);
596 if (sbi->options.isvfat) { 600 if (sbi->options.isvfat) {
597 __le16 atime; 601 __le16 atime;
598 fat_date_unix2dos(inode->i_ctime.tv_sec, &raw_entry->ctime, 602 fat_time_unix2fat(sbi, &inode->i_ctime, &raw_entry->ctime,
599 &raw_entry->cdate, sbi->options.tz_utc); 603 &raw_entry->cdate, &raw_entry->ctime_cs);
600 fat_date_unix2dos(inode->i_atime.tv_sec, &atime, 604 fat_time_unix2fat(sbi, &inode->i_atime, &atime,
601 &raw_entry->adate, sbi->options.tz_utc); 605 &raw_entry->adate, NULL);
602 raw_entry->ctime_cs = (inode->i_ctime.tv_sec & 1) * 100 +
603 inode->i_ctime.tv_nsec / 10000000;
604 } 606 }
605 spin_unlock(&sbi->inode_hash_lock); 607 spin_unlock(&sbi->inode_hash_lock);
606 mark_buffer_dirty(bh); 608 mark_buffer_dirty(bh);
@@ -819,8 +821,10 @@ static int fat_show_options(struct seq_file *m, struct vfsmount *mnt)
819 seq_puts(m, ",uni_xlate"); 821 seq_puts(m, ",uni_xlate");
820 if (!opts->numtail) 822 if (!opts->numtail)
821 seq_puts(m, ",nonumtail"); 823 seq_puts(m, ",nonumtail");
824 if (opts->rodir)
825 seq_puts(m, ",rodir");
822 } 826 }
823 if (sbi->options.flush) 827 if (opts->flush)
824 seq_puts(m, ",flush"); 828 seq_puts(m, ",flush");
825 if (opts->tz_utc) 829 if (opts->tz_utc)
826 seq_puts(m, ",tz=UTC"); 830 seq_puts(m, ",tz=UTC");
@@ -836,7 +840,7 @@ enum {
836 Opt_charset, Opt_shortname_lower, Opt_shortname_win95, 840 Opt_charset, Opt_shortname_lower, Opt_shortname_win95,
837 Opt_shortname_winnt, Opt_shortname_mixed, Opt_utf8_no, Opt_utf8_yes, 841 Opt_shortname_winnt, Opt_shortname_mixed, Opt_utf8_no, Opt_utf8_yes,
838 Opt_uni_xl_no, Opt_uni_xl_yes, Opt_nonumtail_no, Opt_nonumtail_yes, 842 Opt_uni_xl_no, Opt_uni_xl_yes, Opt_nonumtail_no, Opt_nonumtail_yes,
839 Opt_obsolate, Opt_flush, Opt_tz_utc, Opt_err, 843 Opt_obsolate, Opt_flush, Opt_tz_utc, Opt_rodir, Opt_err,
840}; 844};
841 845
842static const match_table_t fat_tokens = { 846static const match_table_t fat_tokens = {
@@ -908,6 +912,7 @@ static const match_table_t vfat_tokens = {
908 {Opt_nonumtail_yes, "nonumtail=yes"}, 912 {Opt_nonumtail_yes, "nonumtail=yes"},
909 {Opt_nonumtail_yes, "nonumtail=true"}, 913 {Opt_nonumtail_yes, "nonumtail=true"},
910 {Opt_nonumtail_yes, "nonumtail"}, 914 {Opt_nonumtail_yes, "nonumtail"},
915 {Opt_rodir, "rodir"},
911 {Opt_err, NULL} 916 {Opt_err, NULL}
912}; 917};
913 918
@@ -927,10 +932,13 @@ static int parse_options(char *options, int is_vfat, int silent, int *debug,
927 opts->allow_utime = -1; 932 opts->allow_utime = -1;
928 opts->codepage = fat_default_codepage; 933 opts->codepage = fat_default_codepage;
929 opts->iocharset = fat_default_iocharset; 934 opts->iocharset = fat_default_iocharset;
930 if (is_vfat) 935 if (is_vfat) {
931 opts->shortname = VFAT_SFN_DISPLAY_LOWER|VFAT_SFN_CREATE_WIN95; 936 opts->shortname = VFAT_SFN_DISPLAY_LOWER|VFAT_SFN_CREATE_WIN95;
932 else 937 opts->rodir = 0;
938 } else {
933 opts->shortname = 0; 939 opts->shortname = 0;
940 opts->rodir = 1;
941 }
934 opts->name_check = 'n'; 942 opts->name_check = 'n';
935 opts->quiet = opts->showexec = opts->sys_immutable = opts->dotsOK = 0; 943 opts->quiet = opts->showexec = opts->sys_immutable = opts->dotsOK = 0;
936 opts->utf8 = opts->unicode_xlate = 0; 944 opts->utf8 = opts->unicode_xlate = 0;
@@ -1081,6 +1089,9 @@ static int parse_options(char *options, int is_vfat, int silent, int *debug,
1081 case Opt_nonumtail_yes: /* empty or 1 or yes or true */ 1089 case Opt_nonumtail_yes: /* empty or 1 or yes or true */
1082 opts->numtail = 0; /* negated option */ 1090 opts->numtail = 0; /* negated option */
1083 break; 1091 break;
1092 case Opt_rodir:
1093 opts->rodir = 1;
1094 break;
1084 1095
1085 /* obsolete mount options */ 1096 /* obsolete mount options */
1086 case Opt_obsolate: 1097 case Opt_obsolate:
@@ -1126,7 +1137,7 @@ static int fat_read_root(struct inode *inode)
1126 inode->i_gid = sbi->options.fs_gid; 1137 inode->i_gid = sbi->options.fs_gid;
1127 inode->i_version++; 1138 inode->i_version++;
1128 inode->i_generation = 0; 1139 inode->i_generation = 0;
1129 inode->i_mode = (S_IRWXUGO & ~sbi->options.fs_dmask) | S_IFDIR; 1140 inode->i_mode = fat_make_mode(sbi, ATTR_DIR, S_IRWXUGO);
1130 inode->i_op = sbi->dir_ops; 1141 inode->i_op = sbi->dir_ops;
1131 inode->i_fop = &fat_dir_operations; 1142 inode->i_fop = &fat_dir_operations;
1132 if (sbi->fat_bits == 32) { 1143 if (sbi->fat_bits == 32) {
@@ -1143,7 +1154,7 @@ static int fat_read_root(struct inode *inode)
1143 MSDOS_I(inode)->i_logstart = 0; 1154 MSDOS_I(inode)->i_logstart = 0;
1144 MSDOS_I(inode)->mmu_private = inode->i_size; 1155 MSDOS_I(inode)->mmu_private = inode->i_size;
1145 1156
1146 MSDOS_I(inode)->i_attrs = ATTR_NONE; 1157 fat_save_attrs(inode, ATTR_DIR);
1147 inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec = 0; 1158 inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec = 0;
1148 inode->i_mtime.tv_nsec = inode->i_atime.tv_nsec = inode->i_ctime.tv_nsec = 0; 1159 inode->i_mtime.tv_nsec = inode->i_atime.tv_nsec = inode->i_ctime.tv_nsec = 0;
1149 inode->i_nlink = fat_subdirs(inode)+2; 1160 inode->i_nlink = fat_subdirs(inode)+2;
diff --git a/fs/fat/misc.c b/fs/fat/misc.c
index 79fb98ad36d4..ac39ebcc1496 100644
--- a/fs/fat/misc.c
+++ b/fs/fat/misc.c
@@ -8,8 +8,8 @@
8 8
9#include <linux/module.h> 9#include <linux/module.h>
10#include <linux/fs.h> 10#include <linux/fs.h>
11#include <linux/msdos_fs.h>
12#include <linux/buffer_head.h> 11#include <linux/buffer_head.h>
12#include "fat.h"
13 13
14/* 14/*
15 * fat_fs_panic reports a severe file system problem and sets the file system 15 * fat_fs_panic reports a severe file system problem and sets the file system
@@ -124,8 +124,9 @@ int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster)
124 mark_inode_dirty(inode); 124 mark_inode_dirty(inode);
125 } 125 }
126 if (new_fclus != (inode->i_blocks >> (sbi->cluster_bits - 9))) { 126 if (new_fclus != (inode->i_blocks >> (sbi->cluster_bits - 9))) {
127 fat_fs_panic(sb, "clusters badly computed (%d != %lu)", 127 fat_fs_panic(sb, "clusters badly computed (%d != %llu)",
128 new_fclus, inode->i_blocks >> (sbi->cluster_bits - 9)); 128 new_fclus,
129 (llu)(inode->i_blocks >> (sbi->cluster_bits - 9)));
129 fat_cache_inval_inode(inode); 130 fat_cache_inval_inode(inode);
130 } 131 }
131 inode->i_blocks += nr_cluster << (sbi->cluster_bits - 9); 132 inode->i_blocks += nr_cluster << (sbi->cluster_bits - 9);
@@ -135,65 +136,131 @@ int fat_chain_add(struct inode *inode, int new_dclus, int nr_cluster)
135 136
136extern struct timezone sys_tz; 137extern struct timezone sys_tz;
137 138
139/*
140 * The epoch of FAT timestamp is 1980.
141 * : bits : value
142 * date: 0 - 4: day (1 - 31)
143 * date: 5 - 8: month (1 - 12)
144 * date: 9 - 15: year (0 - 127) from 1980
145 * time: 0 - 4: sec (0 - 29) 2sec counts
146 * time: 5 - 10: min (0 - 59)
147 * time: 11 - 15: hour (0 - 23)
148 */
149#define SECS_PER_MIN 60
150#define SECS_PER_HOUR (60 * 60)
151#define SECS_PER_DAY (SECS_PER_HOUR * 24)
152#define UNIX_SECS_1980 315532800L
153#if BITS_PER_LONG == 64
154#define UNIX_SECS_2108 4354819200L
155#endif
156/* days between 1.1.70 and 1.1.80 (2 leap days) */
157#define DAYS_DELTA (365 * 10 + 2)
158/* 120 (2100 - 1980) isn't leap year */
159#define YEAR_2100 120
160#define IS_LEAP_YEAR(y) (!((y) & 3) && (y) != YEAR_2100)
161
138/* Linear day numbers of the respective 1sts in non-leap years. */ 162/* Linear day numbers of the respective 1sts in non-leap years. */
139static int day_n[] = { 163static time_t days_in_year[] = {
140 /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */ 164 /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */
141 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0 165 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0,
142}; 166};
143 167
144/* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */ 168/* Convert a FAT time/date pair to a UNIX date (seconds since 1 1 70). */
145int date_dos2unix(unsigned short time, unsigned short date, int tz_utc) 169void fat_time_fat2unix(struct msdos_sb_info *sbi, struct timespec *ts,
170 __le16 __time, __le16 __date, u8 time_cs)
146{ 171{
147 int month, year, secs; 172 u16 time = le16_to_cpu(__time), date = le16_to_cpu(__date);
173 time_t second, day, leap_day, month, year;
148 174
149 /* 175 year = date >> 9;
150 * first subtract and mask after that... Otherwise, if 176 month = max(1, (date >> 5) & 0xf);
151 * date == 0, bad things happen 177 day = max(1, date & 0x1f) - 1;
152 */ 178
153 month = ((date >> 5) - 1) & 15; 179 leap_day = (year + 3) / 4;
154 year = date >> 9; 180 if (year > YEAR_2100) /* 2100 isn't leap year */
155 secs = (time & 31)*2+60*((time >> 5) & 63)+(time >> 11)*3600+86400* 181 leap_day--;
156 ((date & 31)-1+day_n[month]+(year/4)+year*365-((year & 3) == 0 && 182 if (IS_LEAP_YEAR(year) && month > 2)
157 month < 2 ? 1 : 0)+3653); 183 leap_day++;
158 /* days since 1.1.70 plus 80's leap day */ 184
159 if (!tz_utc) 185 second = (time & 0x1f) << 1;
160 secs += sys_tz.tz_minuteswest*60; 186 second += ((time >> 5) & 0x3f) * SECS_PER_MIN;
161 return secs; 187 second += (time >> 11) * SECS_PER_HOUR;
188 second += (year * 365 + leap_day
189 + days_in_year[month] + day
190 + DAYS_DELTA) * SECS_PER_DAY;
191
192 if (!sbi->options.tz_utc)
193 second += sys_tz.tz_minuteswest * SECS_PER_MIN;
194
195 if (time_cs) {
196 ts->tv_sec = second + (time_cs / 100);
197 ts->tv_nsec = (time_cs % 100) * 10000000;
198 } else {
199 ts->tv_sec = second;
200 ts->tv_nsec = 0;
201 }
162} 202}
163 203
164/* Convert linear UNIX date to a MS-DOS time/date pair. */ 204/* Convert linear UNIX date to a FAT time/date pair. */
165void fat_date_unix2dos(int unix_date, __le16 *time, __le16 *date, int tz_utc) 205void fat_time_unix2fat(struct msdos_sb_info *sbi, struct timespec *ts,
206 __le16 *time, __le16 *date, u8 *time_cs)
166{ 207{
167 int day, year, nl_day, month; 208 time_t second = ts->tv_sec;
209 time_t day, leap_day, month, year;
168 210
169 if (!tz_utc) 211 if (!sbi->options.tz_utc)
170 unix_date -= sys_tz.tz_minuteswest*60; 212 second -= sys_tz.tz_minuteswest * SECS_PER_MIN;
171 213
172 /* Jan 1 GMT 00:00:00 1980. But what about another time zone? */ 214 /* Jan 1 GMT 00:00:00 1980. But what about another time zone? */
173 if (unix_date < 315532800) 215 if (second < UNIX_SECS_1980) {
174 unix_date = 315532800; 216 *time = 0;
175 217 *date = cpu_to_le16((0 << 9) | (1 << 5) | 1);
176 *time = cpu_to_le16((unix_date % 60)/2+(((unix_date/60) % 60) << 5)+ 218 if (time_cs)
177 (((unix_date/3600) % 24) << 11)); 219 *time_cs = 0;
178 day = unix_date/86400-3652; 220 return;
179 year = day/365; 221 }
180 if ((year+3)/4+365*year > day) 222#if BITS_PER_LONG == 64
223 if (second >= UNIX_SECS_2108) {
224 *time = cpu_to_le16((23 << 11) | (59 << 5) | 29);
225 *date = cpu_to_le16((127 << 9) | (12 << 5) | 31);
226 if (time_cs)
227 *time_cs = 199;
228 return;
229 }
230#endif
231
232 day = second / SECS_PER_DAY - DAYS_DELTA;
233 year = day / 365;
234 leap_day = (year + 3) / 4;
235 if (year > YEAR_2100) /* 2100 isn't leap year */
236 leap_day--;
237 if (year * 365 + leap_day > day)
181 year--; 238 year--;
182 day -= (year+3)/4+365*year; 239 leap_day = (year + 3) / 4;
183 if (day == 59 && !(year & 3)) { 240 if (year > YEAR_2100) /* 2100 isn't leap year */
184 nl_day = day; 241 leap_day--;
242 day -= year * 365 + leap_day;
243
244 if (IS_LEAP_YEAR(year) && day == days_in_year[3]) {
185 month = 2; 245 month = 2;
186 } else { 246 } else {
187 nl_day = (year & 3) || day <= 59 ? day : day-1; 247 if (IS_LEAP_YEAR(year) && day > days_in_year[3])
188 for (month = 0; month < 12; month++) { 248 day--;
189 if (day_n[month] > nl_day) 249 for (month = 1; month < 12; month++) {
250 if (days_in_year[month + 1] > day)
190 break; 251 break;
191 } 252 }
192 } 253 }
193 *date = cpu_to_le16(nl_day-day_n[month-1]+1+(month << 5)+(year << 9)); 254 day -= days_in_year[month];
194}
195 255
196EXPORT_SYMBOL_GPL(fat_date_unix2dos); 256 *time = cpu_to_le16(((second / SECS_PER_HOUR) % 24) << 11
257 | ((second / SECS_PER_MIN) % 60) << 5
258 | (second % SECS_PER_MIN) >> 1);
259 *date = cpu_to_le16((year << 9) | (month << 5) | (day + 1));
260 if (time_cs)
261 *time_cs = (ts->tv_sec & 1) * 100 + ts->tv_nsec / 10000000;
262}
263EXPORT_SYMBOL_GPL(fat_time_unix2fat);
197 264
198int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs) 265int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs)
199{ 266{
diff --git a/fs/msdos/namei.c b/fs/fat/namei_msdos.c
index e844b9809d27..7ba03a4acbe0 100644
--- a/fs/msdos/namei.c
+++ b/fs/fat/namei_msdos.c
@@ -9,8 +9,8 @@
9#include <linux/module.h> 9#include <linux/module.h>
10#include <linux/time.h> 10#include <linux/time.h>
11#include <linux/buffer_head.h> 11#include <linux/buffer_head.h>
12#include <linux/msdos_fs.h>
13#include <linux/smp_lock.h> 12#include <linux/smp_lock.h>
13#include "fat.h"
14 14
15/* Characters that are undesirable in an MS-DOS file name */ 15/* Characters that are undesirable in an MS-DOS file name */
16static unsigned char bad_chars[] = "*?<>|\""; 16static unsigned char bad_chars[] = "*?<>|\"";
@@ -203,33 +203,37 @@ static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
203{ 203{
204 struct super_block *sb = dir->i_sb; 204 struct super_block *sb = dir->i_sb;
205 struct fat_slot_info sinfo; 205 struct fat_slot_info sinfo;
206 struct inode *inode = NULL; 206 struct inode *inode;
207 int res; 207 int err;
208
209 dentry->d_op = &msdos_dentry_operations;
210 208
211 lock_super(sb); 209 lock_super(sb);
212 res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo); 210
213 if (res == -ENOENT) 211 err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
214 goto add; 212 if (err) {
215 if (res < 0) 213 if (err == -ENOENT) {
216 goto out; 214 inode = NULL;
215 goto out;
216 }
217 goto error;
218 }
219
217 inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos); 220 inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
218 brelse(sinfo.bh); 221 brelse(sinfo.bh);
219 if (IS_ERR(inode)) { 222 if (IS_ERR(inode)) {
220 res = PTR_ERR(inode); 223 err = PTR_ERR(inode);
221 goto out; 224 goto error;
222 } 225 }
223add: 226out:
224 res = 0; 227 unlock_super(sb);
228 dentry->d_op = &msdos_dentry_operations;
225 dentry = d_splice_alias(inode, dentry); 229 dentry = d_splice_alias(inode, dentry);
226 if (dentry) 230 if (dentry)
227 dentry->d_op = &msdos_dentry_operations; 231 dentry->d_op = &msdos_dentry_operations;
228out: 232 return dentry;
233
234error:
229 unlock_super(sb); 235 unlock_super(sb);
230 if (!res) 236 return ERR_PTR(err);
231 return dentry;
232 return ERR_PTR(res);
233} 237}
234 238
235/***** Creates a directory entry (name is already formatted). */ 239/***** Creates a directory entry (name is already formatted). */
@@ -247,7 +251,7 @@ static int msdos_add_entry(struct inode *dir, const unsigned char *name,
247 if (is_hid) 251 if (is_hid)
248 de.attr |= ATTR_HIDDEN; 252 de.attr |= ATTR_HIDDEN;
249 de.lcase = 0; 253 de.lcase = 0;
250 fat_date_unix2dos(ts->tv_sec, &time, &date, sbi->options.tz_utc); 254 fat_time_unix2fat(sbi, ts, &time, &date, NULL);
251 de.cdate = de.adate = 0; 255 de.cdate = de.adate = 0;
252 de.ctime = 0; 256 de.ctime = 0;
253 de.ctime_cs = 0; 257 de.ctime_cs = 0;
diff --git a/fs/vfat/namei.c b/fs/fat/namei_vfat.c
index 155c10b4adbd..bf326d4356a3 100644
--- a/fs/vfat/namei.c
+++ b/fs/fat/namei_vfat.c
@@ -16,36 +16,75 @@
16 */ 16 */
17 17
18#include <linux/module.h> 18#include <linux/module.h>
19
20#include <linux/jiffies.h> 19#include <linux/jiffies.h>
21#include <linux/msdos_fs.h>
22#include <linux/ctype.h> 20#include <linux/ctype.h>
23#include <linux/slab.h> 21#include <linux/slab.h>
24#include <linux/smp_lock.h> 22#include <linux/smp_lock.h>
25#include <linux/buffer_head.h> 23#include <linux/buffer_head.h>
26#include <linux/namei.h> 24#include <linux/namei.h>
25#include "fat.h"
27 26
28static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd) 27/*
28 * If new entry was created in the parent, it could create the 8.3
29 * alias (the shortname of logname). So, the parent may have the
30 * negative-dentry which matches the created 8.3 alias.
31 *
32 * If it happened, the negative dentry isn't actually negative
33 * anymore. So, drop it.
34 */
35static int vfat_revalidate_shortname(struct dentry *dentry)
29{ 36{
30 int ret = 1; 37 int ret = 1;
31 38 spin_lock(&dentry->d_lock);
32 if (!dentry->d_inode && 39 if (dentry->d_time != dentry->d_parent->d_inode->i_version)
33 nd && !(nd->flags & LOOKUP_CONTINUE) && (nd->flags & LOOKUP_CREATE))
34 /*
35 * negative dentry is dropped, in order to make sure
36 * to use the name which a user desires if this is
37 * create path.
38 */
39 ret = 0; 40 ret = 0;
40 else { 41 spin_unlock(&dentry->d_lock);
41 spin_lock(&dentry->d_lock);
42 if (dentry->d_time != dentry->d_parent->d_inode->i_version)
43 ret = 0;
44 spin_unlock(&dentry->d_lock);
45 }
46 return ret; 42 return ret;
47} 43}
48 44
45static int vfat_revalidate(struct dentry *dentry, struct nameidata *nd)
46{
47 /* This is not negative dentry. Always valid. */
48 if (dentry->d_inode)
49 return 1;
50 return vfat_revalidate_shortname(dentry);
51}
52
53static int vfat_revalidate_ci(struct dentry *dentry, struct nameidata *nd)
54{
55 /*
56 * This is not negative dentry. Always valid.
57 *
58 * Note, rename() to existing directory entry will have ->d_inode,
59 * and will use existing name which isn't specified name by user.
60 *
61 * We may be able to drop this positive dentry here. But dropping
62 * positive dentry isn't good idea. So it's unsupported like
63 * rename("filename", "FILENAME") for now.
64 */
65 if (dentry->d_inode)
66 return 1;
67
68 /*
69 * This may be nfsd (or something), anyway, we can't see the
70 * intent of this. So, since this can be for creation, drop it.
71 */
72 if (!nd)
73 return 0;
74
75 /*
76 * Drop the negative dentry, in order to make sure to use the
77 * case sensitive name which is specified by user if this is
78 * for creation.
79 */
80 if (!(nd->flags & (LOOKUP_CONTINUE | LOOKUP_PARENT))) {
81 if (nd->flags & LOOKUP_CREATE)
82 return 0;
83 }
84
85 return vfat_revalidate_shortname(dentry);
86}
87
49/* returns the length of a struct qstr, ignoring trailing dots */ 88/* returns the length of a struct qstr, ignoring trailing dots */
50static unsigned int vfat_striptail_len(struct qstr *qstr) 89static unsigned int vfat_striptail_len(struct qstr *qstr)
51{ 90{
@@ -127,25 +166,16 @@ static int vfat_cmp(struct dentry *dentry, struct qstr *a, struct qstr *b)
127 return 1; 166 return 1;
128} 167}
129 168
130static struct dentry_operations vfat_dentry_ops[4] = { 169static struct dentry_operations vfat_ci_dentry_ops = {
131 { 170 .d_revalidate = vfat_revalidate_ci,
132 .d_hash = vfat_hashi, 171 .d_hash = vfat_hashi,
133 .d_compare = vfat_cmpi, 172 .d_compare = vfat_cmpi,
134 }, 173};
135 { 174
136 .d_revalidate = vfat_revalidate, 175static struct dentry_operations vfat_dentry_ops = {
137 .d_hash = vfat_hashi, 176 .d_revalidate = vfat_revalidate,
138 .d_compare = vfat_cmpi, 177 .d_hash = vfat_hash,
139 }, 178 .d_compare = vfat_cmp,
140 {
141 .d_hash = vfat_hash,
142 .d_compare = vfat_cmp,
143 },
144 {
145 .d_revalidate = vfat_revalidate,
146 .d_hash = vfat_hash,
147 .d_compare = vfat_cmp,
148 }
149}; 179};
150 180
151/* Characters that are undesirable in an MS-DOS file name */ 181/* Characters that are undesirable in an MS-DOS file name */
@@ -569,6 +599,7 @@ static int vfat_build_slots(struct inode *dir, const unsigned char *name,
569 unsigned char msdos_name[MSDOS_NAME]; 599 unsigned char msdos_name[MSDOS_NAME];
570 wchar_t *uname; 600 wchar_t *uname;
571 __le16 time, date; 601 __le16 time, date;
602 u8 time_cs;
572 int err, ulen, usize, i; 603 int err, ulen, usize, i;
573 loff_t offset; 604 loff_t offset;
574 605
@@ -621,10 +652,10 @@ shortname:
621 memcpy(de->name, msdos_name, MSDOS_NAME); 652 memcpy(de->name, msdos_name, MSDOS_NAME);
622 de->attr = is_dir ? ATTR_DIR : ATTR_ARCH; 653 de->attr = is_dir ? ATTR_DIR : ATTR_ARCH;
623 de->lcase = lcase; 654 de->lcase = lcase;
624 fat_date_unix2dos(ts->tv_sec, &time, &date, sbi->options.tz_utc); 655 fat_time_unix2fat(sbi, ts, &time, &date, &time_cs);
625 de->time = de->ctime = time; 656 de->time = de->ctime = time;
626 de->date = de->cdate = de->adate = date; 657 de->date = de->cdate = de->adate = date;
627 de->ctime_cs = 0; 658 de->ctime_cs = time_cs;
628 de->start = cpu_to_le16(cluster); 659 de->start = cpu_to_le16(cluster);
629 de->starthi = cpu_to_le16(cluster >> 16); 660 de->starthi = cpu_to_le16(cluster >> 16);
630 de->size = 0; 661 de->size = 0;
@@ -683,46 +714,58 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
683{ 714{
684 struct super_block *sb = dir->i_sb; 715 struct super_block *sb = dir->i_sb;
685 struct fat_slot_info sinfo; 716 struct fat_slot_info sinfo;
686 struct inode *inode = NULL; 717 struct inode *inode;
687 struct dentry *alias; 718 struct dentry *alias;
688 int err, table; 719 int err;
689 720
690 lock_super(sb); 721 lock_super(sb);
691 table = (MSDOS_SB(sb)->options.name_check == 's') ? 2 : 0;
692 dentry->d_op = &vfat_dentry_ops[table];
693 722
694 err = vfat_find(dir, &dentry->d_name, &sinfo); 723 err = vfat_find(dir, &dentry->d_name, &sinfo);
695 if (err) { 724 if (err) {
696 table++; 725 if (err == -ENOENT) {
726 inode = NULL;
727 goto out;
728 }
697 goto error; 729 goto error;
698 } 730 }
731
699 inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos); 732 inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
700 brelse(sinfo.bh); 733 brelse(sinfo.bh);
701 if (IS_ERR(inode)) { 734 if (IS_ERR(inode)) {
702 unlock_super(sb); 735 err = PTR_ERR(inode);
703 return ERR_CAST(inode); 736 goto error;
704 } 737 }
705 alias = d_find_alias(inode);
706 if (alias) {
707 if (d_invalidate(alias) == 0)
708 dput(alias);
709 else {
710 iput(inode);
711 unlock_super(sb);
712 return alias;
713 }
714 738
739 alias = d_find_alias(inode);
740 if (alias && !(alias->d_flags & DCACHE_DISCONNECTED)) {
741 /*
742 * This inode has non DCACHE_DISCONNECTED dentry. This
743 * means, the user did ->lookup() by an another name
744 * (longname vs 8.3 alias of it) in past.
745 *
746 * Switch to new one for reason of locality if possible.
747 */
748 BUG_ON(d_unhashed(alias));
749 if (!S_ISDIR(inode->i_mode))
750 d_move(alias, dentry);
751 iput(inode);
752 unlock_super(sb);
753 return alias;
715 } 754 }
716error: 755out:
717 unlock_super(sb); 756 unlock_super(sb);
718 dentry->d_op = &vfat_dentry_ops[table]; 757 dentry->d_op = sb->s_root->d_op;
719 dentry->d_time = dentry->d_parent->d_inode->i_version; 758 dentry->d_time = dentry->d_parent->d_inode->i_version;
720 dentry = d_splice_alias(inode, dentry); 759 dentry = d_splice_alias(inode, dentry);
721 if (dentry) { 760 if (dentry) {
722 dentry->d_op = &vfat_dentry_ops[table]; 761 dentry->d_op = sb->s_root->d_op;
723 dentry->d_time = dentry->d_parent->d_inode->i_version; 762 dentry->d_time = dentry->d_parent->d_inode->i_version;
724 } 763 }
725 return dentry; 764 return dentry;
765
766error:
767 unlock_super(sb);
768 return ERR_PTR(err);
726} 769}
727 770
728static int vfat_create(struct inode *dir, struct dentry *dentry, int mode, 771static int vfat_create(struct inode *dir, struct dentry *dentry, int mode,
@@ -1014,9 +1057,9 @@ static int vfat_fill_super(struct super_block *sb, void *data, int silent)
1014 return res; 1057 return res;
1015 1058
1016 if (MSDOS_SB(sb)->options.name_check != 's') 1059 if (MSDOS_SB(sb)->options.name_check != 's')
1017 sb->s_root->d_op = &vfat_dentry_ops[0]; 1060 sb->s_root->d_op = &vfat_ci_dentry_ops;
1018 else 1061 else
1019 sb->s_root->d_op = &vfat_dentry_ops[2]; 1062 sb->s_root->d_op = &vfat_dentry_ops;
1020 1063
1021 return 0; 1064 return 0;
1022} 1065}
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 8adebd3e43c6..3cceef4ad2b7 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -85,15 +85,15 @@ static int jffs2_garbage_collect_thread(void *_c)
85 for (;;) { 85 for (;;) {
86 allow_signal(SIGHUP); 86 allow_signal(SIGHUP);
87 again: 87 again:
88 spin_lock(&c->erase_completion_lock);
88 if (!jffs2_thread_should_wake(c)) { 89 if (!jffs2_thread_should_wake(c)) {
89 set_current_state (TASK_INTERRUPTIBLE); 90 set_current_state (TASK_INTERRUPTIBLE);
91 spin_unlock(&c->erase_completion_lock);
90 D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread sleeping...\n")); 92 D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread sleeping...\n"));
91 /* Yes, there's a race here; we checked jffs2_thread_should_wake()
92 before setting current->state to TASK_INTERRUPTIBLE. But it doesn't
93 matter - We don't care if we miss a wakeup, because the GC thread
94 is only an optimisation anyway. */
95 schedule(); 93 schedule();
96 } 94 } else
95 spin_unlock(&c->erase_completion_lock);
96
97 97
98 /* This thread is purely an optimisation. But if it runs when 98 /* This thread is purely an optimisation. But if it runs when
99 other things could be running, it actually makes things a 99 other things could be running, it actually makes things a
diff --git a/fs/jffs2/compr_lzo.c b/fs/jffs2/compr_lzo.c
index 47b045797e42..90cb60d09787 100644
--- a/fs/jffs2/compr_lzo.c
+++ b/fs/jffs2/compr_lzo.c
@@ -19,7 +19,7 @@
19 19
20static void *lzo_mem; 20static void *lzo_mem;
21static void *lzo_compress_buf; 21static void *lzo_compress_buf;
22static DEFINE_MUTEX(deflate_mutex); 22static DEFINE_MUTEX(deflate_mutex); /* for lzo_mem and lzo_compress_buf */
23 23
24static void free_workspace(void) 24static void free_workspace(void)
25{ 25{
@@ -49,18 +49,21 @@ static int jffs2_lzo_compress(unsigned char *data_in, unsigned char *cpage_out,
49 49
50 mutex_lock(&deflate_mutex); 50 mutex_lock(&deflate_mutex);
51 ret = lzo1x_1_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem); 51 ret = lzo1x_1_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem);
52 mutex_unlock(&deflate_mutex);
53
54 if (ret != LZO_E_OK) 52 if (ret != LZO_E_OK)
55 return -1; 53 goto fail;
56 54
57 if (compress_size > *dstlen) 55 if (compress_size > *dstlen)
58 return -1; 56 goto fail;
59 57
60 memcpy(cpage_out, lzo_compress_buf, compress_size); 58 memcpy(cpage_out, lzo_compress_buf, compress_size);
61 *dstlen = compress_size; 59 mutex_unlock(&deflate_mutex);
62 60
61 *dstlen = compress_size;
63 return 0; 62 return 0;
63
64 fail:
65 mutex_unlock(&deflate_mutex);
66 return -1;
64} 67}
65 68
66static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out, 69static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out,
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 0875b60b4bf7..21a052915aa9 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -261,9 +261,11 @@ static int jffs2_find_nextblock(struct jffs2_sb_info *c)
261 261
262 jffs2_sum_reset_collected(c->summary); /* reset collected summary */ 262 jffs2_sum_reset_collected(c->summary); /* reset collected summary */
263 263
264#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
264 /* adjust write buffer offset, else we get a non contiguous write bug */ 265 /* adjust write buffer offset, else we get a non contiguous write bug */
265 if (!(c->wbuf_ofs % c->sector_size) && !c->wbuf_len) 266 if (!(c->wbuf_ofs % c->sector_size) && !c->wbuf_len)
266 c->wbuf_ofs = 0xffffffff; 267 c->wbuf_ofs = 0xffffffff;
268#endif
267 269
268 D1(printk(KERN_DEBUG "jffs2_find_nextblock(): new nextblock = 0x%08x\n", c->nextblock->offset)); 270 D1(printk(KERN_DEBUG "jffs2_find_nextblock(): new nextblock = 0x%08x\n", c->nextblock->offset));
269 271
diff --git a/fs/msdos/Makefile b/fs/msdos/Makefile
deleted file mode 100644
index ea67646fcb95..000000000000
--- a/fs/msdos/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
1#
2# Makefile for the Linux msdos filesystem routines.
3#
4
5obj-$(CONFIG_MSDOS_FS) += msdos.o
6
7msdos-y := namei.o
diff --git a/fs/proc/uptime.c b/fs/proc/uptime.c
index 0c10a0b3f146..df26aa88fa47 100644
--- a/fs/proc/uptime.c
+++ b/fs/proc/uptime.c
@@ -1,43 +1,45 @@
1#include <linux/fs.h>
2#include <linux/init.h> 1#include <linux/init.h>
3#include <linux/proc_fs.h> 2#include <linux/proc_fs.h>
4#include <linux/sched.h> 3#include <linux/sched.h>
5#include <linux/seq_file.h>
6#include <linux/time.h> 4#include <linux/time.h>
7#include <asm/cputime.h> 5#include <asm/cputime.h>
8 6
9static int uptime_proc_show(struct seq_file *m, void *v) 7static int proc_calc_metrics(char *page, char **start, off_t off,
8 int count, int *eof, int len)
9{
10 if (len <= off + count)
11 *eof = 1;
12 *start = page + off;
13 len -= off;
14 if (len > count)
15 len = count;
16 if (len < 0)
17 len = 0;
18 return len;
19}
20
21static int uptime_read_proc(char *page, char **start, off_t off, int count,
22 int *eof, void *data)
10{ 23{
11 struct timespec uptime; 24 struct timespec uptime;
12 struct timespec idle; 25 struct timespec idle;
26 int len;
13 cputime_t idletime = cputime_add(init_task.utime, init_task.stime); 27 cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
14 28
15 do_posix_clock_monotonic_gettime(&uptime); 29 do_posix_clock_monotonic_gettime(&uptime);
16 monotonic_to_bootbased(&uptime); 30 monotonic_to_bootbased(&uptime);
17 cputime_to_timespec(idletime, &idle); 31 cputime_to_timespec(idletime, &idle);
18 seq_printf(m, "%lu.%02lu %lu.%02lu\n", 32 len = sprintf(page, "%lu.%02lu %lu.%02lu\n",
19 (unsigned long) uptime.tv_sec, 33 (unsigned long) uptime.tv_sec,
20 (uptime.tv_nsec / (NSEC_PER_SEC / 100)), 34 (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
21 (unsigned long) idle.tv_sec, 35 (unsigned long) idle.tv_sec,
22 (idle.tv_nsec / (NSEC_PER_SEC / 100))); 36 (idle.tv_nsec / (NSEC_PER_SEC / 100)));
23 return 0; 37 return proc_calc_metrics(page, start, off, count, eof, len);
24} 38}
25 39
26static int uptime_proc_open(struct inode *inode, struct file *file)
27{
28 return single_open(file, uptime_proc_show, NULL);
29}
30
31static const struct file_operations uptime_proc_fops = {
32 .open = uptime_proc_open,
33 .read = seq_read,
34 .llseek = seq_lseek,
35 .release = single_release,
36};
37
38static int __init proc_uptime_init(void) 40static int __init proc_uptime_init(void)
39{ 41{
40 proc_create("uptime", 0, NULL, &uptime_proc_fops); 42 create_proc_read_entry("uptime", 0, NULL, uptime_read_proc, NULL);
41 return 0; 43 return 0;
42} 44}
43module_init(proc_uptime_init); 45module_init(proc_uptime_init);
diff --git a/fs/vfat/Makefile b/fs/vfat/Makefile
deleted file mode 100644
index 40f2798a4f08..000000000000
--- a/fs/vfat/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
1#
2# Makefile for the linux vfat-filesystem routines.
3#
4
5obj-$(CONFIG_VFAT_FS) += vfat.o
6
7vfat-y := namei.o
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-19 01:08:55 -0500