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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 09:10:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 09:10:19 -0700
commit790eac5640abf7a57fa3a644386df330e18c11b0 (patch)
tree08de20bde44f59e51b91ff473a71047c2957e8c9 /drivers
parent0b0585c3e192967cb2ef0ac0816eb8a8c8d99840 (diff)
parent48bde8d3620f5f3c6ae9ff599eb404055ae51664 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull second set of VFS changes from Al Viro: "Assorted f_pos race fixes, making do_splice_direct() safe to call with i_mutex on parent, O_TMPFILE support, Jeff's locks.c series, ->d_hash/->d_compare calling conventions changes from Linus, misc stuff all over the place." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits) Document ->tmpfile() ext4: ->tmpfile() support vfs: export lseek_execute() to modules lseek_execute() doesn't need an inode passed to it block_dev: switch to fixed_size_llseek() cpqphp_sysfs: switch to fixed_size_llseek() tile-srom: switch to fixed_size_llseek() proc_powerpc: switch to fixed_size_llseek() ubi/cdev: switch to fixed_size_llseek() pci/proc: switch to fixed_size_llseek() isapnp: switch to fixed_size_llseek() lpfc: switch to fixed_size_llseek() locks: give the blocked_hash its own spinlock locks: add a new "lm_owner_key" lock operation locks: turn the blocked_list into a hashtable locks: convert fl_link to a hlist_node locks: avoid taking global lock if possible when waking up blocked waiters locks: protect most of the file_lock handling with i_lock locks: encapsulate the fl_link list handling locks: make "added" in __posix_lock_file a bool ...
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/ps3flash.c28
-rw-r--r--drivers/char/tile-srom.c28
-rw-r--r--drivers/mtd/mtdchar.c20
-rw-r--r--drivers/mtd/ubi/cdev.c26
-rw-r--r--drivers/net/ethernet/brocade/bna/bnad_debugfs.c22
-rw-r--r--drivers/net/wireless/ti/wlcore/debugfs.c4
-rw-r--r--drivers/parisc/eisa_eeprom.c15
-rw-r--r--drivers/pci/hotplug/cpqphp_sysfs.c22
-rw-r--r--drivers/pci/proc.c23
-rw-r--r--drivers/pnp/isapnp/proc.c22
-rw-r--r--drivers/scsi/bfa/bfad_debugfs.c28
-rw-r--r--drivers/scsi/fnic/fnic_debugfs.c16
-rw-r--r--drivers/scsi/lpfc/lpfc_debugfs.c18
-rw-r--r--drivers/staging/android/logger.c2
-rw-r--r--drivers/staging/comedi/comedi_fops.c3
-rw-r--r--drivers/tty/vt/vc_screen.c17
-rw-r--r--drivers/zorro/proc.c22
17 files changed, 27 insertions, 289 deletions
diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index 8cafa9ccd43f..0b311fa277ef 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -98,32 +98,8 @@ static int ps3flash_fetch(struct ps3_storage_device *dev, u64 start_sector)
static loff_t ps3flash_llseek(struct file *file, loff_t offset, int origin)
{
struct ps3_storage_device *dev = ps3flash_dev;
- loff_t res;
-
- mutex_lock(&file->f_mapping->host->i_mutex);
- switch (origin) {
- case 0:
- break;
- case 1:
- offset += file->f_pos;
- break;
- case 2:
- offset += dev->regions[dev->region_idx].size*dev->blk_size;
- break;
- default:
- offset = -1;
- }
- if (offset < 0) {
- res = -EINVAL;
- goto out;
- }
-
- file->f_pos = offset;
- res = file->f_pos;
-
-out:
- mutex_unlock(&file->f_mapping->host->i_mutex);
- return res;
+ return generic_file_llseek_size(file, offset, origin, MAX_LFS_FILESIZE,
+ dev->regions[dev->region_idx].size*dev->blk_size);
}
static ssize_t ps3flash_read(char __user *userbuf, void *kernelbuf,
diff --git a/drivers/char/tile-srom.c b/drivers/char/tile-srom.c
index 2e2036e940fc..7faeb1cde97d 100644
--- a/drivers/char/tile-srom.c
+++ b/drivers/char/tile-srom.c
@@ -273,32 +273,10 @@ static ssize_t srom_write(struct file *filp, const char __user *buf,
}
/* Provide our own implementation so we can use srom->total_size. */
-loff_t srom_llseek(struct file *filp, loff_t offset, int origin)
+loff_t srom_llseek(struct file *file, loff_t offset, int origin)
{
- struct srom_dev *srom = filp->private_data;
-
- if (mutex_lock_interruptible(&srom->lock))
- return -ERESTARTSYS;
-
- switch (origin) {
- case SEEK_END:
- offset += srom->total_size;
- break;
- case SEEK_CUR:
- offset += filp->f_pos;
- break;
- }
-
- if (offset < 0 || offset > srom->total_size) {
- offset = -EINVAL;
- } else {
- filp->f_pos = offset;
- filp->f_version = 0;
- }
-
- mutex_unlock(&srom->lock);
-
- return offset;
+ struct srom_dev *srom = file->private_data;
+ return fixed_size_llseek(file, offset, origin, srom->total_size);
}
static ssize_t total_show(struct device *dev,
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index c719879284bd..684bfa39e4ee 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -55,25 +55,7 @@ struct mtd_file_info {
static loff_t mtdchar_lseek(struct file *file, loff_t offset, int orig)
{
struct mtd_file_info *mfi = file->private_data;
- struct mtd_info *mtd = mfi->mtd;
-
- switch (orig) {
- case SEEK_SET:
- break;
- case SEEK_CUR:
- offset += file->f_pos;
- break;
- case SEEK_END:
- offset += mtd->size;
- break;
- default:
- return -EINVAL;
- }
-
- if (offset >= 0 && offset <= mtd->size)
- return file->f_pos = offset;
-
- return -EINVAL;
+ return fixed_size_llseek(file, offset, orig, mfi->mtd->size);
}
static int count;
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 4f02848bb2bc..8ca49f2043e4 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -155,7 +155,6 @@ static loff_t vol_cdev_llseek(struct file *file, loff_t offset, int origin)
{
struct ubi_volume_desc *desc = file->private_data;
struct ubi_volume *vol = desc->vol;
- loff_t new_offset;
if (vol->updating) {
/* Update is in progress, seeking is prohibited */
@@ -163,30 +162,7 @@ static loff_t vol_cdev_llseek(struct file *file, loff_t offset, int origin)
return -EBUSY;
}
- switch (origin) {
- case 0: /* SEEK_SET */
- new_offset = offset;
- break;
- case 1: /* SEEK_CUR */
- new_offset = file->f_pos + offset;
- break;
- case 2: /* SEEK_END */
- new_offset = vol->used_bytes + offset;
- break;
- default:
- return -EINVAL;
- }
-
- if (new_offset < 0 || new_offset > vol->used_bytes) {
- ubi_err("bad seek %lld", new_offset);
- return -EINVAL;
- }
-
- dbg_gen("seek volume %d, offset %lld, origin %d, new offset %lld",
- vol->vol_id, offset, origin, new_offset);
-
- file->f_pos = new_offset;
- return new_offset;
+ return fixed_size_llseek(file, offset, origin, vol->used_bytes);
}
static int vol_cdev_fsync(struct file *file, loff_t start, loff_t end,
diff --git a/drivers/net/ethernet/brocade/bna/bnad_debugfs.c b/drivers/net/ethernet/brocade/bna/bnad_debugfs.c
index 94d957d203a6..7d6aa8c87df8 100644
--- a/drivers/net/ethernet/brocade/bna/bnad_debugfs.c
+++ b/drivers/net/ethernet/brocade/bna/bnad_debugfs.c
@@ -230,32 +230,12 @@ bnad_debugfs_open_drvinfo(struct inode *inode, struct file *file)
static loff_t
bnad_debugfs_lseek(struct file *file, loff_t offset, int orig)
{
- loff_t pos = file->f_pos;
struct bnad_debug_info *debug = file->private_data;
if (!debug)
return -EINVAL;
- switch (orig) {
- case 0:
- file->f_pos = offset;
- break;
- case 1:
- file->f_pos += offset;
- break;
- case 2:
- file->f_pos = debug->buffer_len + offset;
- break;
- default:
- return -EINVAL;
- }
-
- if (file->f_pos < 0 || file->f_pos > debug->buffer_len) {
- file->f_pos = pos;
- return -EINVAL;
- }
-
- return file->f_pos;
+ return fixed_size_llseek(file, offset, orig, debug->buffer_len);
}
static ssize_t
diff --git a/drivers/net/wireless/ti/wlcore/debugfs.c b/drivers/net/wireless/ti/wlcore/debugfs.c
index c3e1f79c7856..e17630c2a849 100644
--- a/drivers/net/wireless/ti/wlcore/debugfs.c
+++ b/drivers/net/wireless/ti/wlcore/debugfs.c
@@ -1056,7 +1056,7 @@ static ssize_t dev_mem_read(struct file *file,
return -EINVAL;
memset(&part, 0, sizeof(part));
- part.mem.start = file->f_pos;
+ part.mem.start = *ppos;
part.mem.size = bytes;
buf = kmalloc(bytes, GFP_KERNEL);
@@ -1137,7 +1137,7 @@ static ssize_t dev_mem_write(struct file *file, const char __user *user_buf,
return -EINVAL;
memset(&part, 0, sizeof(part));
- part.mem.start = file->f_pos;
+ part.mem.start = *ppos;
part.mem.size = bytes;
buf = kmalloc(bytes, GFP_KERNEL);
diff --git a/drivers/parisc/eisa_eeprom.c b/drivers/parisc/eisa_eeprom.c
index af212c6a6158..783906fe659a 100644
--- a/drivers/parisc/eisa_eeprom.c
+++ b/drivers/parisc/eisa_eeprom.c
@@ -31,20 +31,9 @@
#define EISA_EEPROM_MINOR 241
-static loff_t eisa_eeprom_llseek(struct file *file, loff_t offset, int origin )
+static loff_t eisa_eeprom_llseek(struct file *file, loff_t offset, int origin)
{
- switch (origin) {
- case 0:
- /* nothing to do */
- break;
- case 1:
- offset += file->f_pos;
- break;
- case 2:
- offset += HPEE_MAX_LENGTH;
- break;
- }
- return (offset >= 0 && offset < HPEE_MAX_LENGTH) ? (file->f_pos = offset) : -EINVAL;
+ return fixed_size_llseek(file, offset, origin, HPEE_MAX_LENGTH);
}
static ssize_t eisa_eeprom_read(struct file * file,
diff --git a/drivers/pci/hotplug/cpqphp_sysfs.c b/drivers/pci/hotplug/cpqphp_sysfs.c
index 4cb30447a486..17c1f36315d1 100644
--- a/drivers/pci/hotplug/cpqphp_sysfs.c
+++ b/drivers/pci/hotplug/cpqphp_sysfs.c
@@ -167,26 +167,8 @@ exit:
static loff_t lseek(struct file *file, loff_t off, int whence)
{
- struct ctrl_dbg *dbg;
- loff_t new = -1;
-
- mutex_lock(&cpqphp_mutex);
- dbg = file->private_data;
-
- switch (whence) {
- case 0:
- new = off;
- break;
- case 1:
- new = file->f_pos + off;
- break;
- }
- if (new < 0 || new > dbg->size) {
- mutex_unlock(&cpqphp_mutex);
- return -EINVAL;
- }
- mutex_unlock(&cpqphp_mutex);
- return (file->f_pos = new);
+ struct ctrl_dbg *dbg = file->private_data;
+ return fixed_size_llseek(file, off, whence, dbg->size);
}
static ssize_t read(struct file *file, char __user *buf,
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 08126087ec31..cdc7836d7e3d 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -20,27 +20,8 @@ static int proc_initialized; /* = 0 */
static loff_t
proc_bus_pci_lseek(struct file *file, loff_t off, int whence)
{
- loff_t new = -1;
- struct inode *inode = file_inode(file);
-
- mutex_lock(&inode->i_mutex);
- switch (whence) {
- case 0:
- new = off;
- break;
- case 1:
- new = file->f_pos + off;
- break;
- case 2:
- new = inode->i_size + off;
- break;
- }
- if (new < 0 || new > inode->i_size)
- new = -EINVAL;
- else
- file->f_pos = new;
- mutex_unlock(&inode->i_mutex);
- return new;
+ struct pci_dev *dev = PDE_DATA(file_inode(file));
+ return fixed_size_llseek(file, off, whence, dev->cfg_size);
}
static ssize_t
diff --git a/drivers/pnp/isapnp/proc.c b/drivers/pnp/isapnp/proc.c
index 2365ef37ae24..5edee645d890 100644
--- a/drivers/pnp/isapnp/proc.c
+++ b/drivers/pnp/isapnp/proc.c
@@ -29,27 +29,7 @@ static struct proc_dir_entry *isapnp_proc_bus_dir = NULL;
static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence)
{
- loff_t new = -1;
- struct inode *inode = file_inode(file);
-
- mutex_lock(&inode->i_mutex);
- switch (whence) {
- case 0:
- new = off;
- break;
- case 1:
- new = file->f_pos + off;
- break;
- case 2:
- new = 256 + off;
- break;
- }
- if (new < 0 || new > 256)
- new = -EINVAL;
- else
- file->f_pos = new;
- mutex_unlock(&inode->i_mutex);
- return new;
+ return fixed_size_llseek(file, off, whence, 256);
}
static ssize_t isapnp_proc_bus_read(struct file *file, char __user * buf,
diff --git a/drivers/scsi/bfa/bfad_debugfs.c b/drivers/scsi/bfa/bfad_debugfs.c
index b63d534192e3..8e83d0474fe7 100644
--- a/drivers/scsi/bfa/bfad_debugfs.c
+++ b/drivers/scsi/bfa/bfad_debugfs.c
@@ -173,31 +173,9 @@ bfad_debugfs_open_reg(struct inode *inode, struct file *file)
static loff_t
bfad_debugfs_lseek(struct file *file, loff_t offset, int orig)
{
- struct bfad_debug_info *debug;
- loff_t pos = file->f_pos;
-
- debug = file->private_data;
-
- switch (orig) {
- case 0:
- file->f_pos = offset;
- break;
- case 1:
- file->f_pos += offset;
- break;
- case 2:
- file->f_pos = debug->buffer_len + offset;
- break;
- default:
- return -EINVAL;
- }
-
- if (file->f_pos < 0 || file->f_pos > debug->buffer_len) {
- file->f_pos = pos;
- return -EINVAL;
- }
-
- return file->f_pos;
+ struct bfad_debug_info *debug = file->private_data;
+ return fixed_size_llseek(file, offset, orig,
+ debug->buffer_len);
}
static ssize_t
diff --git a/drivers/scsi/fnic/fnic_debugfs.c b/drivers/scsi/fnic/fnic_debugfs.c
index 85e1ffd0e5c5..cbcb0121c84d 100644
--- a/drivers/scsi/fnic/fnic_debugfs.c
+++ b/drivers/scsi/fnic/fnic_debugfs.c
@@ -164,20 +164,8 @@ static loff_t fnic_trace_debugfs_lseek(struct file *file,
int howto)
{
fnic_dbgfs_t *fnic_dbg_prt = file->private_data;
- loff_t pos = -1;
-
- switch (howto) {
- case 0:
- pos = offset;
- break;
- case 1:
- pos = file->f_pos + offset;
- break;
- case 2:
- pos = fnic_dbg_prt->buffer_len + offset;
- }
- return (pos < 0 || pos > fnic_dbg_prt->buffer_len) ?
- -EINVAL : (file->f_pos = pos);
+ return fixed_size_llseek(file, offset, howto,
+ fnic_dbg_prt->buffer_len);
}
/*
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index f525ecb7a9c6..60084e6ad2f2 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -1165,22 +1165,8 @@ out:
static loff_t
lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
{
- struct lpfc_debug *debug;
- loff_t pos = -1;
-
- debug = file->private_data;
-
- switch (whence) {
- case 0:
- pos = off;
- break;
- case 1:
- pos = file->f_pos + off;
- break;
- case 2:
- pos = debug->len + off;
- }
- return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos);
+ struct lpfc_debug *debug = file->private_data;
+ return fixed_size_llseek(file, off, whence, debug->len);
}
/**
diff --git a/drivers/staging/android/logger.c b/drivers/staging/android/logger.c
index 9bd874789ce5..080abf2faf97 100644
--- a/drivers/staging/android/logger.c
+++ b/drivers/staging/android/logger.c
@@ -696,7 +696,7 @@ static long logger_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
ret = -EBADF;
break;
}
- if (!(in_egroup_p(file->f_dentry->d_inode->i_gid) ||
+ if (!(in_egroup_p(file_inode(file)->i_gid) ||
capable(CAP_SYSLOG))) {
ret = -EPERM;
break;
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index 0794aacc928a..8647518259f6 100644
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -2329,9 +2329,6 @@ static int comedi_close(struct inode *inode, struct file *file)
mutex_unlock(&dev->mutex);
- if (file->f_flags & FASYNC)
- comedi_fasync(-1, file, 0);
-
return 0;
}
diff --git a/drivers/tty/vt/vc_screen.c b/drivers/tty/vt/vc_screen.c
index d7799deacb21..14a2b5f11bca 100644
--- a/drivers/tty/vt/vc_screen.c
+++ b/drivers/tty/vt/vc_screen.c
@@ -188,22 +188,7 @@ static loff_t vcs_lseek(struct file *file, loff_t offset, int orig)
console_unlock();
if (size < 0)
return size;
- switch (orig) {
- default:
- return -EINVAL;
- case 2:
- offset += size;
- break;
- case 1:
- offset += file->f_pos;
- case 0:
- break;
- }
- if (offset < 0 || offset > size) {
- return -EINVAL;
- }
- file->f_pos = offset;
- return file->f_pos;
+ return fixed_size_llseek(file, offset, orig, size);
}
diff --git a/drivers/zorro/proc.c b/drivers/zorro/proc.c
index 1c15ee7456b6..ea1ce822a8e0 100644
--- a/drivers/zorro/proc.c
+++ b/drivers/zorro/proc.c
@@ -21,27 +21,7 @@
static loff_t
proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
{
- loff_t new = -1;
- struct inode *inode = file_inode(file);
-
- mutex_lock(&inode->i_mutex);
- switch (whence) {
- case 0:
- new = off;
- break;
- case 1:
- new = file->f_pos + off;
- break;
- case 2:
- new = sizeof(struct ConfigDev) + off;
- break;
- }
- if (new < 0 || new > sizeof(struct ConfigDev))
- new = -EINVAL;
- else
- file->f_pos = new;
- mutex_unlock(&inode->i_mutex);
- return new;
+ return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev));
}
static ssize_t

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