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-rw-r--r--fs/proc/Makefile1
-rw-r--r--fs/proc/array.c28
-rw-r--r--fs/proc/base.c177
-rw-r--r--fs/proc/consoles.c114
-rw-r--r--fs/proc/devices.c4
-rw-r--r--fs/proc/generic.c21
-rw-r--r--fs/proc/inode.c16
-rw-r--r--fs/proc/internal.h5
-rw-r--r--fs/proc/kcore.c2
-rw-r--r--fs/proc/page.c2
-rw-r--r--fs/proc/proc_sysctl.c31
-rw-r--r--fs/proc/proc_tty.c26
-rw-r--r--fs/proc/softirqs.c6
-rw-r--r--fs/proc/stat.c2
-rw-r--r--fs/proc/task_mmu.c5
-rw-r--r--fs/proc/task_nommu.c7
-rw-r--r--fs/proc/vmcore.c2
17 files changed, 322 insertions, 127 deletions
diff --git a/fs/proc/Makefile b/fs/proc/Makefile
index 2758e2afc518..df434c5f28fb 100644
--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -10,6 +10,7 @@ proc-$(CONFIG_MMU) := mmu.o task_mmu.o
proc-y += inode.o root.o base.o generic.o array.o \
proc_tty.o
proc-y += cmdline.o
+proc-y += consoles.o
proc-y += cpuinfo.o
proc-y += devices.o
proc-y += interrupts.o
diff --git a/fs/proc/array.c b/fs/proc/array.c
index fff6572676ae..df2b703b9d0f 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -95,7 +95,7 @@ static inline void task_name(struct seq_file *m, struct task_struct *p)
get_task_comm(tcomm, p);
- seq_printf(m, "Name:\t");
+ seq_puts(m, "Name:\t");
end = m->buf + m->size;
buf = m->buf + m->count;
name = tcomm;
@@ -122,7 +122,7 @@ static inline void task_name(struct seq_file *m, struct task_struct *p)
buf++;
}
m->count = buf - m->buf;
- seq_printf(m, "\n");
+ seq_putc(m, '\n');
}
/*
@@ -208,7 +208,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
seq_printf(m, "%d ", GROUP_AT(group_info, g));
put_cred(cred);
- seq_printf(m, "\n");
+ seq_putc(m, '\n');
}
static void render_sigset_t(struct seq_file *m, const char *header,
@@ -216,7 +216,7 @@ static void render_sigset_t(struct seq_file *m, const char *header,
{
int i;
- seq_printf(m, "%s", header);
+ seq_puts(m, header);
i = _NSIG;
do {
@@ -230,7 +230,7 @@ static void render_sigset_t(struct seq_file *m, const char *header,
seq_printf(m, "%x", x);
} while (i >= 4);
- seq_printf(m, "\n");
+ seq_putc(m, '\n');
}
static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
@@ -291,12 +291,12 @@ static void render_cap_t(struct seq_file *m, const char *header,
{
unsigned __capi;
- seq_printf(m, "%s", header);
+ seq_puts(m, header);
CAP_FOR_EACH_U32(__capi) {
seq_printf(m, "%08x",
a->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]);
}
- seq_printf(m, "\n");
+ seq_putc(m, '\n');
}
static inline void task_cap(struct seq_file *m, struct task_struct *p)
@@ -329,12 +329,12 @@ static inline void task_context_switch_counts(struct seq_file *m,
static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
{
- seq_printf(m, "Cpus_allowed:\t");
+ seq_puts(m, "Cpus_allowed:\t");
seq_cpumask(m, &task->cpus_allowed);
- seq_printf(m, "\n");
- seq_printf(m, "Cpus_allowed_list:\t");
+ seq_putc(m, '\n');
+ seq_puts(m, "Cpus_allowed_list:\t");
seq_cpumask_list(m, &task->cpus_allowed);
- seq_printf(m, "\n");
+ seq_putc(m, '\n');
}
int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
@@ -535,15 +535,15 @@ int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
struct pid *pid, struct task_struct *task)
{
- int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0;
+ unsigned long size = 0, resident = 0, shared = 0, text = 0, data = 0;
struct mm_struct *mm = get_task_mm(task);
if (mm) {
size = task_statm(mm, &shared, &text, &data, &resident);
mmput(mm);
}
- seq_printf(m, "%d %d %d %d %d %d %d\n",
- size, resident, shared, text, lib, data, 0);
+ seq_printf(m, "%lu %lu %lu %lu 0 %lu 0\n",
+ size, resident, shared, text, data);
return 0;
}
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 182845147fe4..93f1cdd5d3d7 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -373,26 +373,20 @@ static int lstats_show_proc(struct seq_file *m, void *v)
return -ESRCH;
seq_puts(m, "Latency Top version : v0.1\n");
for (i = 0; i < 32; i++) {
- if (task->latency_record[i].backtrace[0]) {
+ struct latency_record *lr = &task->latency_record[i];
+ if (lr->backtrace[0]) {
int q;
- seq_printf(m, "%i %li %li ",
- task->latency_record[i].count,
- task->latency_record[i].time,
- task->latency_record[i].max);
+ seq_printf(m, "%i %li %li",
+ lr->count, lr->time, lr->max);
for (q = 0; q < LT_BACKTRACEDEPTH; q++) {
- char sym[KSYM_SYMBOL_LEN];
- char *c;
- if (!task->latency_record[i].backtrace[q])
+ unsigned long bt = lr->backtrace[q];
+ if (!bt)
break;
- if (task->latency_record[i].backtrace[q] == ULONG_MAX)
+ if (bt == ULONG_MAX)
break;
- sprint_symbol(sym, task->latency_record[i].backtrace[q]);
- c = strchr(sym, '+');
- if (c)
- *c = 0;
- seq_printf(m, "%s ", sym);
+ seq_printf(m, " %ps", (void *)bt);
}
- seq_printf(m, "\n");
+ seq_putc(m, '\n');
}
}
@@ -751,14 +745,7 @@ static int proc_single_show(struct seq_file *m, void *v)
static int proc_single_open(struct inode *inode, struct file *filp)
{
- int ret;
- ret = single_open(filp, proc_single_show, NULL);
- if (!ret) {
- struct seq_file *m = filp->private_data;
-
- m->private = inode;
- }
- return ret;
+ return single_open(filp, proc_single_show, inode);
}
static const struct file_operations proc_single_file_operations = {
@@ -1386,9 +1373,77 @@ sched_write(struct file *file, const char __user *buf,
static int sched_open(struct inode *inode, struct file *filp)
{
+ return single_open(filp, sched_show, inode);
+}
+
+static const struct file_operations proc_pid_sched_operations = {
+ .open = sched_open,
+ .read = seq_read,
+ .write = sched_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+#endif
+
+#ifdef CONFIG_SCHED_AUTOGROUP
+/*
+ * Print out autogroup related information:
+ */
+static int sched_autogroup_show(struct seq_file *m, void *v)
+{
+ struct inode *inode = m->private;
+ struct task_struct *p;
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+ proc_sched_autogroup_show_task(p, m);
+
+ put_task_struct(p);
+
+ return 0;
+}
+
+static ssize_t
+sched_autogroup_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ struct inode *inode = file->f_path.dentry->d_inode;
+ struct task_struct *p;
+ char buffer[PROC_NUMBUF];
+ long nice;
+ int err;
+
+ memset(buffer, 0, sizeof(buffer));
+ if (count > sizeof(buffer) - 1)
+ count = sizeof(buffer) - 1;
+ if (copy_from_user(buffer, buf, count))
+ return -EFAULT;
+
+ err = strict_strtol(strstrip(buffer), 0, &nice);
+ if (err)
+ return -EINVAL;
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+
+ err = nice;
+ err = proc_sched_autogroup_set_nice(p, &err);
+ if (err)
+ count = err;
+
+ put_task_struct(p);
+
+ return count;
+}
+
+static int sched_autogroup_open(struct inode *inode, struct file *filp)
+{
int ret;
- ret = single_open(filp, sched_show, NULL);
+ ret = single_open(filp, sched_autogroup_show, NULL);
if (!ret) {
struct seq_file *m = filp->private_data;
@@ -1397,15 +1452,15 @@ static int sched_open(struct inode *inode, struct file *filp)
return ret;
}
-static const struct file_operations proc_pid_sched_operations = {
- .open = sched_open,
+static const struct file_operations proc_pid_sched_autogroup_operations = {
+ .open = sched_autogroup_open,
.read = seq_read,
- .write = sched_write,
+ .write = sched_autogroup_write,
.llseek = seq_lseek,
.release = single_release,
};
-#endif
+#endif /* CONFIG_SCHED_AUTOGROUP */
static ssize_t comm_write(struct file *file, const char __user *buf,
size_t count, loff_t *offset)
@@ -1454,15 +1509,7 @@ static int comm_show(struct seq_file *m, void *v)
static int comm_open(struct inode *inode, struct file *filp)
{
- int ret;
-
- ret = single_open(filp, comm_show, NULL);
- if (!ret) {
- struct seq_file *m = filp->private_data;
-
- m->private = inode;
- }
- return ret;
+ return single_open(filp, comm_show, inode);
}
static const struct file_operations proc_pid_set_comm_operations = {
@@ -1719,10 +1766,16 @@ static int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat
*/
static int pid_revalidate(struct dentry *dentry, struct nameidata *nd)
{
- struct inode *inode = dentry->d_inode;
- struct task_struct *task = get_proc_task(inode);
+ struct inode *inode;
+ struct task_struct *task;
const struct cred *cred;
+ if (nd && nd->flags & LOOKUP_RCU)
+ return -ECHILD;
+
+ inode = dentry->d_inode;
+ task = get_proc_task(inode);
+
if (task) {
if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
task_dumpable(task)) {
@@ -1744,7 +1797,7 @@ static int pid_revalidate(struct dentry *dentry, struct nameidata *nd)
return 0;
}
-static int pid_delete_dentry(struct dentry * dentry)
+static int pid_delete_dentry(const struct dentry * dentry)
{
/* Is the task we represent dead?
* If so, then don't put the dentry on the lru list,
@@ -1888,12 +1941,19 @@ static int proc_fd_link(struct inode *inode, struct path *path)
static int tid_fd_revalidate(struct dentry *dentry, struct nameidata *nd)
{
- struct inode *inode = dentry->d_inode;
- struct task_struct *task = get_proc_task(inode);
- int fd = proc_fd(inode);
+ struct inode *inode;
+ struct task_struct *task;
+ int fd;
struct files_struct *files;
const struct cred *cred;
+ if (nd && nd->flags & LOOKUP_RCU)
+ return -ECHILD;
+
+ inode = dentry->d_inode;
+ task = get_proc_task(inode);
+ fd = proc_fd(inode);
+
if (task) {
files = get_files_struct(task);
if (files) {
@@ -1969,7 +2029,7 @@ static struct dentry *proc_fd_instantiate(struct inode *dir,
inode->i_op = &proc_pid_link_inode_operations;
inode->i_size = 64;
ei->op.proc_get_link = proc_fd_link;
- dentry->d_op = &tid_fd_dentry_operations;
+ d_set_d_op(dentry, &tid_fd_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */
if (tid_fd_revalidate(dentry, NULL))
@@ -2101,11 +2161,13 @@ static const struct file_operations proc_fd_operations = {
* /proc/pid/fd needs a special permission handler so that a process can still
* access /proc/self/fd after it has executed a setuid().
*/
-static int proc_fd_permission(struct inode *inode, int mask)
+static int proc_fd_permission(struct inode *inode, int mask, unsigned int flags)
{
int rv;
- rv = generic_permission(inode, mask, NULL);
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
+ rv = generic_permission(inode, mask, flags, NULL);
if (rv == 0)
return 0;
if (task_pid(current) == proc_pid(inode))
@@ -2137,7 +2199,7 @@ static struct dentry *proc_fdinfo_instantiate(struct inode *dir,
ei->fd = fd;
inode->i_mode = S_IFREG | S_IRUSR;
inode->i_fop = &proc_fdinfo_file_operations;
- dentry->d_op = &tid_fd_dentry_operations;
+ d_set_d_op(dentry, &tid_fd_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */
if (tid_fd_revalidate(dentry, NULL))
@@ -2196,7 +2258,7 @@ static struct dentry *proc_pident_instantiate(struct inode *dir,
if (p->fop)
inode->i_fop = p->fop;
ei->op = p->op;
- dentry->d_op = &pid_dentry_operations;
+ d_set_d_op(dentry, &pid_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */
if (pid_revalidate(dentry, NULL))
@@ -2563,8 +2625,14 @@ static const struct pid_entry proc_base_stuff[] = {
*/
static int proc_base_revalidate(struct dentry *dentry, struct nameidata *nd)
{
- struct inode *inode = dentry->d_inode;
- struct task_struct *task = get_proc_task(inode);
+ struct inode *inode;
+ struct task_struct *task;
+
+ if (nd->flags & LOOKUP_RCU)
+ return -ECHILD;
+
+ inode = dentry->d_inode;
+ task = get_proc_task(inode);
if (task) {
put_task_struct(task);
return 1;
@@ -2615,7 +2683,7 @@ static struct dentry *proc_base_instantiate(struct inode *dir,
if (p->fop)
inode->i_fop = p->fop;
ei->op = p->op;
- dentry->d_op = &proc_base_dentry_operations;
+ d_set_d_op(dentry, &proc_base_dentry_operations);
d_add(dentry, inode);
error = NULL;
out:
@@ -2733,6 +2801,9 @@ static const struct pid_entry tgid_base_stuff[] = {
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations),
#endif
+#ifdef CONFIG_SCHED_AUTOGROUP
+ REG("autogroup", S_IRUGO|S_IWUSR, proc_pid_sched_autogroup_operations),
+#endif
REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
INF("syscall", S_IRUSR, proc_pid_syscall),
@@ -2926,7 +2997,7 @@ static struct dentry *proc_pid_instantiate(struct inode *dir,
inode->i_nlink = 2 + pid_entry_count_dirs(tgid_base_stuff,
ARRAY_SIZE(tgid_base_stuff));
- dentry->d_op = &pid_dentry_operations;
+ d_set_d_op(dentry, &pid_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */
@@ -3169,7 +3240,7 @@ static struct dentry *proc_task_instantiate(struct inode *dir,
inode->i_nlink = 2 + pid_entry_count_dirs(tid_base_stuff,
ARRAY_SIZE(tid_base_stuff));
- dentry->d_op = &pid_dentry_operations;
+ d_set_d_op(dentry, &pid_dentry_operations);
d_add(dentry, inode);
/* Close the race of the process dying before we return the dentry */
diff --git a/fs/proc/consoles.c b/fs/proc/consoles.c
new file mode 100644
index 000000000000..eafc22ab1fdd
--- /dev/null
+++ b/fs/proc/consoles.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2010 Werner Fink, Jiri Slaby
+ *
+ * Licensed under GPLv2
+ */
+
+#include <linux/console.h>
+#include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/tty_driver.h>
+
+/*
+ * This is handler for /proc/consoles
+ */
+static int show_console_dev(struct seq_file *m, void *v)
+{
+ static const struct {
+ short flag;
+ char name;
+ } con_flags[] = {
+ { CON_ENABLED, 'E' },
+ { CON_CONSDEV, 'C' },
+ { CON_BOOT, 'B' },
+ { CON_PRINTBUFFER, 'p' },
+ { CON_BRL, 'b' },
+ { CON_ANYTIME, 'a' },
+ };
+ char flags[ARRAY_SIZE(con_flags) + 1];
+ struct console *con = v;
+ unsigned int a;
+ int len;
+ dev_t dev = 0;
+
+ if (con->device) {
+ const struct tty_driver *driver;
+ int index;
+ driver = con->device(con, &index);
+ if (driver) {
+ dev = MKDEV(driver->major, driver->minor_start);
+ dev += index;
+ }
+ }
+
+ for (a = 0; a < ARRAY_SIZE(con_flags); a++)
+ flags[a] = (con->flags & con_flags[a].flag) ?
+ con_flags[a].name : ' ';
+ flags[a] = 0;
+
+ seq_printf(m, "%s%d%n", con->name, con->index, &len);
+ len = 21 - len;
+ if (len < 1)
+ len = 1;
+ seq_printf(m, "%*c%c%c%c (%s)", len, ' ', con->read ? 'R' : '-',
+ con->write ? 'W' : '-', con->unblank ? 'U' : '-',
+ flags);
+ if (dev)
+ seq_printf(m, " %4d:%d", MAJOR(dev), MINOR(dev));
+
+ seq_printf(m, "\n");
+
+ return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+ struct console *con;
+ loff_t off = 0;
+
+ acquire_console_sem();
+ for_each_console(con)
+ if (off++ == *pos)
+ break;
+
+ return con;
+}
+
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ struct console *con = v;
+ ++*pos;
+ return con->next;
+}
+
+static void c_stop(struct seq_file *m, void *v)
+{
+ release_console_sem();
+}
+
+static const struct seq_operations consoles_op = {
+ .start = c_start,
+ .next = c_next,
+ .stop = c_stop,
+ .show = show_console_dev
+};
+
+static int consoles_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &consoles_op);
+}
+
+static const struct file_operations proc_consoles_operations = {
+ .open = consoles_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int __init proc_consoles_init(void)
+{
+ proc_create("consoles", 0, NULL, &proc_consoles_operations);
+ return 0;
+}
+module_init(proc_consoles_init);
diff --git a/fs/proc/devices.c b/fs/proc/devices.c
index 59ee7da959c9..b14347167c35 100644
--- a/fs/proc/devices.c
+++ b/fs/proc/devices.c
@@ -9,14 +9,14 @@ static int devinfo_show(struct seq_file *f, void *v)
if (i < CHRDEV_MAJOR_HASH_SIZE) {
if (i == 0)
- seq_printf(f, "Character devices:\n");
+ seq_puts(f, "Character devices:\n");
chrdev_show(f, i);
}
#ifdef CONFIG_BLOCK
else {
i -= CHRDEV_MAJOR_HASH_SIZE;
if (i == 0)
- seq_printf(f, "\nBlock devices:\n");
+ seq_puts(f, "\nBlock devices:\n");
blkdev_show(f, i);
}
#endif
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index dd29f0337661..01e07f2a188f 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -400,7 +400,7 @@ static const struct inode_operations proc_link_inode_operations = {
* smarter: we could keep a "volatile" flag in the
* inode to indicate which ones to keep.
*/
-static int proc_delete_dentry(struct dentry * dentry)
+static int proc_delete_dentry(const struct dentry * dentry)
{
return 1;
}
@@ -425,13 +425,10 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir,
if (de->namelen != dentry->d_name.len)
continue;
if (!memcmp(dentry->d_name.name, de->name, de->namelen)) {
- unsigned int ino;
-
- ino = de->low_ino;
pde_get(de);
spin_unlock(&proc_subdir_lock);
error = -EINVAL;
- inode = proc_get_inode(dir->i_sb, ino, de);
+ inode = proc_get_inode(dir->i_sb, de);
goto out_unlock;
}
}
@@ -439,7 +436,7 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir,
out_unlock:
if (inode) {
- dentry->d_op = &proc_dentry_operations;
+ d_set_d_op(dentry, &proc_dentry_operations);
d_add(dentry, inode);
return NULL;
}
@@ -768,12 +765,7 @@ EXPORT_SYMBOL(proc_create_data);
static void free_proc_entry(struct proc_dir_entry *de)
{
- unsigned int ino = de->low_ino;
-
- if (ino < PROC_DYNAMIC_FIRST)
- return;
-
- release_inode_number(ino);
+ release_inode_number(de->low_ino);
if (S_ISLNK(de->mode))
kfree(de->data);
@@ -834,12 +826,9 @@ void remove_proc_entry(const char *name, struct proc_dir_entry *parent)
wait_for_completion(de->pde_unload_completion);
- goto continue_removing;
+ spin_lock(&de->pde_unload_lock);
}
- spin_unlock(&de->pde_unload_lock);
-continue_removing:
- spin_lock(&de->pde_unload_lock);
while (!list_empty(&de->pde_openers)) {
struct pde_opener *pdeo;
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 3ddb6068177c..176ce4cda68a 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -65,11 +65,18 @@ static struct inode *proc_alloc_inode(struct super_block *sb)
return inode;
}
-static void proc_destroy_inode(struct inode *inode)
+static void proc_i_callback(struct rcu_head *head)
{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+ INIT_LIST_HEAD(&inode->i_dentry);
kmem_cache_free(proc_inode_cachep, PROC_I(inode));
}
+static void proc_destroy_inode(struct inode *inode)
+{
+ call_rcu(&inode->i_rcu, proc_i_callback);
+}
+
static void init_once(void *foo)
{
struct proc_inode *ei = (struct proc_inode *) foo;
@@ -409,12 +416,11 @@ static const struct file_operations proc_reg_file_ops_no_compat = {
};
#endif
-struct inode *proc_get_inode(struct super_block *sb, unsigned int ino,
- struct proc_dir_entry *de)
+struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
{
struct inode * inode;
- inode = iget_locked(sb, ino);
+ inode = iget_locked(sb, de->low_ino);
if (!inode)
return NULL;
if (inode->i_state & I_NEW) {
@@ -464,7 +470,7 @@ int proc_fill_super(struct super_block *s)
s->s_time_gran = 1;
pde_get(&proc_root);
- root_inode = proc_get_inode(s, PROC_ROOT_INO, &proc_root);
+ root_inode = proc_get_inode(s, &proc_root);
if (!root_inode)
goto out_no_root;
root_inode->i_uid = 0;
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 1f24a3eddd12..9ad561ded409 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -96,7 +96,8 @@ extern spinlock_t proc_subdir_lock;
struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *);
int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
unsigned long task_vsize(struct mm_struct *);
-int task_statm(struct mm_struct *, int *, int *, int *, int *);
+unsigned long task_statm(struct mm_struct *,
+ unsigned long *, unsigned long *, unsigned long *, unsigned long *);
void task_mem(struct seq_file *, struct mm_struct *);
static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
@@ -108,7 +109,7 @@ void pde_put(struct proc_dir_entry *pde);
extern struct vfsmount *proc_mnt;
int proc_fill_super(struct super_block *);
-struct inode *proc_get_inode(struct super_block *, unsigned int, struct proc_dir_entry *);
+struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);
/*
* These are generic /proc routines that use the internal
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 6f37c391468d..d245cb23dd72 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -558,7 +558,7 @@ static int open_kcore(struct inode *inode, struct file *filp)
static const struct file_operations proc_kcore_operations = {
.read = read_kcore,
.open = open_kcore,
- .llseek = generic_file_llseek,
+ .llseek = default_llseek,
};
#ifdef CONFIG_MEMORY_HOTPLUG
diff --git a/fs/proc/page.c b/fs/proc/page.c
index 3b8b45660331..b06c674624e6 100644
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -40,7 +40,7 @@ static ssize_t kpagecount_read(struct file *file, char __user *buf,
ppage = pfn_to_page(pfn);
else
ppage = NULL;
- if (!ppage)
+ if (!ppage || PageSlab(ppage))
pcount = 0;
else
pcount = page_mapcount(ppage);
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index b652cb00906b..09a1f92a34ef 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -5,6 +5,7 @@
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include <linux/security.h>
+#include <linux/namei.h>
#include "internal.h"
static const struct dentry_operations proc_sys_dentry_operations;
@@ -120,7 +121,7 @@ static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry,
goto out;
err = NULL;
- dentry->d_op = &proc_sys_dentry_operations;
+ d_set_d_op(dentry, &proc_sys_dentry_operations);
d_add(dentry, inode);
out:
@@ -201,7 +202,7 @@ static int proc_sys_fill_cache(struct file *filp, void *dirent,
dput(child);
return -ENOMEM;
} else {
- child->d_op = &proc_sys_dentry_operations;
+ d_set_d_op(child, &proc_sys_dentry_operations);
d_add(child, inode);
}
} else {
@@ -294,7 +295,7 @@ out:
return ret;
}
-static int proc_sys_permission(struct inode *inode, int mask)
+static int proc_sys_permission(struct inode *inode, int mask,unsigned int flags)
{
/*
* sysctl entries that are not writeable,
@@ -304,6 +305,9 @@ static int proc_sys_permission(struct inode *inode, int mask)
struct ctl_table *table;
int error;
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
+
/* Executable files are not allowed under /proc/sys/ */
if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode))
return -EACCES;
@@ -389,23 +393,30 @@ static const struct inode_operations proc_sys_dir_operations = {
static int proc_sys_revalidate(struct dentry *dentry, struct nameidata *nd)
{
+ if (nd->flags & LOOKUP_RCU)
+ return -ECHILD;
return !PROC_I(dentry->d_inode)->sysctl->unregistering;
}
-static int proc_sys_delete(struct dentry *dentry)
+static int proc_sys_delete(const struct dentry *dentry)
{
return !!PROC_I(dentry->d_inode)->sysctl->unregistering;
}
-static int proc_sys_compare(struct dentry *dir, struct qstr *qstr,
- struct qstr *name)
+static int proc_sys_compare(const struct dentry *parent,
+ const struct inode *pinode,
+ const struct dentry *dentry, const struct inode *inode,
+ unsigned int len, const char *str, const struct qstr *name)
{
- struct dentry *dentry = container_of(qstr, struct dentry, d_name);
- if (qstr->len != name->len)
+ /* Although proc doesn't have negative dentries, rcu-walk means
+ * that inode here can be NULL */
+ if (!inode)
+ return 0;
+ if (name->len != len)
return 1;
- if (memcmp(qstr->name, name->name, name->len))
+ if (memcmp(name->name, str, len))
return 1;
- return !sysctl_is_seen(PROC_I(dentry->d_inode)->sysctl);
+ return !sysctl_is_seen(PROC_I(inode)->sysctl);
}
static const struct dentry_operations proc_sys_dentry_operations = {
diff --git a/fs/proc/proc_tty.c b/fs/proc/proc_tty.c
index 83adcc869437..cb761f010300 100644
--- a/fs/proc/proc_tty.c
+++ b/fs/proc/proc_tty.c
@@ -36,27 +36,27 @@ static void show_tty_range(struct seq_file *m, struct tty_driver *p,
}
switch (p->type) {
case TTY_DRIVER_TYPE_SYSTEM:
- seq_printf(m, "system");
+ seq_puts(m, "system");
if (p->subtype == SYSTEM_TYPE_TTY)
- seq_printf(m, ":/dev/tty");
+ seq_puts(m, ":/dev/tty");
else if (p->subtype == SYSTEM_TYPE_SYSCONS)
- seq_printf(m, ":console");
+ seq_puts(m, ":console");
else if (p->subtype == SYSTEM_TYPE_CONSOLE)
- seq_printf(m, ":vtmaster");
+ seq_puts(m, ":vtmaster");
break;
case TTY_DRIVER_TYPE_CONSOLE:
- seq_printf(m, "console");
+ seq_puts(m, "console");
break;
case TTY_DRIVER_TYPE_SERIAL:
- seq_printf(m, "serial");
+ seq_puts(m, "serial");
break;
case TTY_DRIVER_TYPE_PTY:
if (p->subtype == PTY_TYPE_MASTER)
- seq_printf(m, "pty:master");
+ seq_puts(m, "pty:master");
else if (p->subtype == PTY_TYPE_SLAVE)
- seq_printf(m, "pty:slave");
+ seq_puts(m, "pty:slave");
else
- seq_printf(m, "pty");
+ seq_puts(m, "pty");
break;
default:
seq_printf(m, "type:%d.%d", p->type, p->subtype);
@@ -74,19 +74,19 @@ static int show_tty_driver(struct seq_file *m, void *v)
/* pseudo-drivers first */
seq_printf(m, "%-20s /dev/%-8s ", "/dev/tty", "tty");
seq_printf(m, "%3d %7d ", TTYAUX_MAJOR, 0);
- seq_printf(m, "system:/dev/tty\n");
+ seq_puts(m, "system:/dev/tty\n");
seq_printf(m, "%-20s /dev/%-8s ", "/dev/console", "console");
seq_printf(m, "%3d %7d ", TTYAUX_MAJOR, 1);
- seq_printf(m, "system:console\n");
+ seq_puts(m, "system:console\n");
#ifdef CONFIG_UNIX98_PTYS
seq_printf(m, "%-20s /dev/%-8s ", "/dev/ptmx", "ptmx");
seq_printf(m, "%3d %7d ", TTYAUX_MAJOR, 2);
- seq_printf(m, "system\n");
+ seq_puts(m, "system\n");
#endif
#ifdef CONFIG_VT
seq_printf(m, "%-20s /dev/%-8s ", "/dev/vc/0", "vc/0");
seq_printf(m, "%3d %7d ", TTY_MAJOR, 0);
- seq_printf(m, "system:vtmaster\n");
+ seq_puts(m, "system:vtmaster\n");
#endif
}
diff --git a/fs/proc/softirqs.c b/fs/proc/softirqs.c
index 37994737c983..62604be9f58d 100644
--- a/fs/proc/softirqs.c
+++ b/fs/proc/softirqs.c
@@ -10,16 +10,16 @@ static int show_softirqs(struct seq_file *p, void *v)
{
int i, j;
- seq_printf(p, " ");
+ seq_puts(p, " ");
for_each_possible_cpu(i)
seq_printf(p, "CPU%-8d", i);
- seq_printf(p, "\n");
+ seq_putc(p, '\n');
for (i = 0; i < NR_SOFTIRQS; i++) {
seq_printf(p, "%12s:", softirq_to_name[i]);
for_each_possible_cpu(j)
seq_printf(p, " %10u", kstat_softirqs_cpu(i, j));
- seq_printf(p, "\n");
+ seq_putc(p, '\n');
}
return 0;
}
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index e15a19c93bae..1cffa2b8a2fc 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -126,7 +126,7 @@ static int show_stat(struct seq_file *p, void *v)
for (i = 0; i < NR_SOFTIRQS; i++)
seq_printf(p, " %u", per_softirq_sums[i]);
- seq_printf(p, "\n");
+ seq_putc(p, '\n');
return 0;
}
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index c126c83b9a45..c3755bd8dd3e 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -66,8 +66,9 @@ unsigned long task_vsize(struct mm_struct *mm)
return PAGE_SIZE * mm->total_vm;
}
-int task_statm(struct mm_struct *mm, int *shared, int *text,
- int *data, int *resident)
+unsigned long task_statm(struct mm_struct *mm,
+ unsigned long *shared, unsigned long *text,
+ unsigned long *data, unsigned long *resident)
{
*shared = get_mm_counter(mm, MM_FILEPAGES);
*text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index cb6306e63843..b535d3e5d5f1 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -92,13 +92,14 @@ unsigned long task_vsize(struct mm_struct *mm)
return vsize;
}
-int task_statm(struct mm_struct *mm, int *shared, int *text,
- int *data, int *resident)
+unsigned long task_statm(struct mm_struct *mm,
+ unsigned long *shared, unsigned long *text,
+ unsigned long *data, unsigned long *resident)
{
struct vm_area_struct *vma;
struct vm_region *region;
struct rb_node *p;
- int size = kobjsize(mm);
+ unsigned long size = kobjsize(mm);
down_read(&mm->mmap_sem);
for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) {
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 2367fb3f70bc..74802bc5ded9 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -499,7 +499,7 @@ static int __init parse_crash_elf64_headers(void)
/* Do some basic Verification. */
if (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0 ||
(ehdr.e_type != ET_CORE) ||
- !vmcore_elf_check_arch(&ehdr) ||
+ !vmcore_elf64_check_arch(&ehdr) ||
ehdr.e_ident[EI_CLASS] != ELFCLASS64 ||
ehdr.e_ident[EI_VERSION] != EV_CURRENT ||
ehdr.e_version != EV_CURRENT ||
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