aboutsummaryrefslogtreecommitdiff
path: root/fs/proc
diff options
context:
space:
mode:
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/array.c160
-rw-r--r--fs/proc/base.c71
-rw-r--r--fs/proc/generic.c74
-rw-r--r--fs/proc/inode.c1
-rw-r--r--fs/proc/internal.h15
-rw-r--r--fs/proc/kcore.c1
-rw-r--r--fs/proc/nommu.c2
-rw-r--r--fs/proc/proc_misc.c22
-rw-r--r--fs/proc/proc_net.c7
-rw-r--r--fs/proc/proc_sysctl.c4
-rw-r--r--fs/proc/proc_tty.c5
-rw-r--r--fs/proc/root.c1
-rw-r--r--fs/proc/task_mmu.c14
-rw-r--r--fs/proc/task_nommu.c7
-rw-r--r--fs/proc/vmcore.c1
15 files changed, 233 insertions, 152 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 6ba2746e451..07d6c4853fe 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -77,6 +77,7 @@
#include <linux/cpuset.h>
#include <linux/rcupdate.h>
#include <linux/delayacct.h>
+#include <linux/seq_file.h>
#include <linux/pid_namespace.h>
#include <asm/pgtable.h>
@@ -88,18 +89,21 @@
do { memcpy(buffer, string, strlen(string)); \
buffer += strlen(string); } while (0)
-static inline char *task_name(struct task_struct *p, char *buf)
+static inline void task_name(struct seq_file *m, struct task_struct *p)
{
int i;
+ char *buf, *end;
char *name;
char tcomm[sizeof(p->comm)];
get_task_comm(tcomm, p);
- ADDBUF(buf, "Name:\t");
+ seq_printf(m, "Name:\t");
+ end = m->buf + m->size;
+ buf = m->buf + m->count;
name = tcomm;
i = sizeof(tcomm);
- do {
+ while (i && (buf < end)) {
unsigned char c = *name;
name++;
i--;
@@ -107,20 +111,21 @@ static inline char *task_name(struct task_struct *p, char *buf)
if (!c)
break;
if (c == '\\') {
- buf[1] = c;
- buf += 2;
+ buf++;
+ if (buf < end)
+ *buf++ = c;
continue;
}
if (c == '\n') {
- buf[0] = '\\';
- buf[1] = 'n';
- buf += 2;
+ *buf++ = '\\';
+ if (buf < end)
+ *buf++ = 'n';
continue;
}
buf++;
- } while (i);
- *buf = '\n';
- return buf+1;
+ }
+ m->count = buf - m->buf;
+ seq_printf(m, "\n");
}
/*
@@ -151,21 +156,20 @@ static inline const char *get_task_state(struct task_struct *tsk)
return *p;
}
-static inline char *task_state(struct task_struct *p, char *buffer)
+static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *p)
{
struct group_info *group_info;
int g;
struct fdtable *fdt = NULL;
- struct pid_namespace *ns;
pid_t ppid, tpid;
- ns = current->nsproxy->pid_ns;
rcu_read_lock();
ppid = pid_alive(p) ?
task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
tpid = pid_alive(p) && p->ptrace ?
task_pid_nr_ns(rcu_dereference(p->parent), ns) : 0;
- buffer += sprintf(buffer,
+ seq_printf(m,
"State:\t%s\n"
"Tgid:\t%d\n"
"Pid:\t%d\n"
@@ -175,7 +179,7 @@ static inline char *task_state(struct task_struct *p, char *buffer)
"Gid:\t%d\t%d\t%d\t%d\n",
get_task_state(p),
task_tgid_nr_ns(p, ns),
- task_pid_nr_ns(p, ns),
+ pid_nr_ns(pid, ns),
ppid, tpid,
p->uid, p->euid, p->suid, p->fsuid,
p->gid, p->egid, p->sgid, p->fsgid);
@@ -183,7 +187,7 @@ static inline char *task_state(struct task_struct *p, char *buffer)
task_lock(p);
if (p->files)
fdt = files_fdtable(p->files);
- buffer += sprintf(buffer,
+ seq_printf(m,
"FDSize:\t%d\n"
"Groups:\t",
fdt ? fdt->max_fds : 0);
@@ -194,20 +198,18 @@ static inline char *task_state(struct task_struct *p, char *buffer)
task_unlock(p);
for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++)
- buffer += sprintf(buffer, "%d ", GROUP_AT(group_info, g));
+ seq_printf(m, "%d ", GROUP_AT(group_info, g));
put_group_info(group_info);
- buffer += sprintf(buffer, "\n");
- return buffer;
+ seq_printf(m, "\n");
}
-static char *render_sigset_t(const char *header, sigset_t *set, char *buffer)
+static void render_sigset_t(struct seq_file *m, const char *header,
+ sigset_t *set)
{
- int i, len;
+ int i;
- len = strlen(header);
- memcpy(buffer, header, len);
- buffer += len;
+ seq_printf(m, "%s", header);
i = _NSIG;
do {
@@ -218,12 +220,10 @@ static char *render_sigset_t(const char *header, sigset_t *set, char *buffer)
if (sigismember(set, i+2)) x |= 2;
if (sigismember(set, i+3)) x |= 4;
if (sigismember(set, i+4)) x |= 8;
- *buffer++ = (x < 10 ? '0' : 'a' - 10) + x;
+ seq_printf(m, "%x", x);
} while (i >= 4);
- *buffer++ = '\n';
- *buffer = 0;
- return buffer;
+ seq_printf(m, "\n");
}
static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
@@ -241,7 +241,7 @@ static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
}
}
-static inline char *task_sig(struct task_struct *p, char *buffer)
+static inline void task_sig(struct seq_file *m, struct task_struct *p)
{
unsigned long flags;
sigset_t pending, shpending, blocked, ignored, caught;
@@ -268,67 +268,66 @@ static inline char *task_sig(struct task_struct *p, char *buffer)
}
rcu_read_unlock();
- buffer += sprintf(buffer, "Threads:\t%d\n", num_threads);
- buffer += sprintf(buffer, "SigQ:\t%lu/%lu\n", qsize, qlim);
+ seq_printf(m, "Threads:\t%d\n", num_threads);
+ seq_printf(m, "SigQ:\t%lu/%lu\n", qsize, qlim);
/* render them all */
- buffer = render_sigset_t("SigPnd:\t", &pending, buffer);
- buffer = render_sigset_t("ShdPnd:\t", &shpending, buffer);
- buffer = render_sigset_t("SigBlk:\t", &blocked, buffer);
- buffer = render_sigset_t("SigIgn:\t", &ignored, buffer);
- buffer = render_sigset_t("SigCgt:\t", &caught, buffer);
-
- return buffer;
+ render_sigset_t(m, "SigPnd:\t", &pending);
+ render_sigset_t(m, "ShdPnd:\t", &shpending);
+ render_sigset_t(m, "SigBlk:\t", &blocked);
+ render_sigset_t(m, "SigIgn:\t", &ignored);
+ render_sigset_t(m, "SigCgt:\t", &caught);
}
-static char *render_cap_t(const char *header, kernel_cap_t *a, char *buffer)
+static void render_cap_t(struct seq_file *m, const char *header,
+ kernel_cap_t *a)
{
unsigned __capi;
- buffer += sprintf(buffer, "%s", header);
+ seq_printf(m, "%s", header);
CAP_FOR_EACH_U32(__capi) {
- buffer += sprintf(buffer, "%08x",
- a->cap[(_LINUX_CAPABILITY_U32S-1) - __capi]);
+ seq_printf(m, "%08x",
+ a->cap[(_LINUX_CAPABILITY_U32S-1) - __capi]);
}
- return buffer + sprintf(buffer, "\n");
+ seq_printf(m, "\n");
}
-static inline char *task_cap(struct task_struct *p, char *buffer)
+static inline void task_cap(struct seq_file *m, struct task_struct *p)
{
- buffer = render_cap_t("CapInh:\t", &p->cap_inheritable, buffer);
- buffer = render_cap_t("CapPrm:\t", &p->cap_permitted, buffer);
- return render_cap_t("CapEff:\t", &p->cap_effective, buffer);
+ render_cap_t(m, "CapInh:\t", &p->cap_inheritable);
+ render_cap_t(m, "CapPrm:\t", &p->cap_permitted);
+ render_cap_t(m, "CapEff:\t", &p->cap_effective);
}
-static inline char *task_context_switch_counts(struct task_struct *p,
- char *buffer)
+static inline void task_context_switch_counts(struct seq_file *m,
+ struct task_struct *p)
{
- return buffer + sprintf(buffer, "voluntary_ctxt_switches:\t%lu\n"
- "nonvoluntary_ctxt_switches:\t%lu\n",
- p->nvcsw,
- p->nivcsw);
+ seq_printf(m, "voluntary_ctxt_switches:\t%lu\n"
+ "nonvoluntary_ctxt_switches:\t%lu\n",
+ p->nvcsw,
+ p->nivcsw);
}
-int proc_pid_status(struct task_struct *task, char *buffer)
+int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
{
- char *orig = buffer;
struct mm_struct *mm = get_task_mm(task);
- buffer = task_name(task, buffer);
- buffer = task_state(task, buffer);
+ task_name(m, task);
+ task_state(m, ns, pid, task);
if (mm) {
- buffer = task_mem(mm, buffer);
+ task_mem(m, mm);
mmput(mm);
}
- buffer = task_sig(task, buffer);
- buffer = task_cap(task, buffer);
- buffer = cpuset_task_status_allowed(task, buffer);
+ task_sig(m, task);
+ task_cap(m, task);
+ cpuset_task_status_allowed(m, task);
#if defined(CONFIG_S390)
- buffer = task_show_regs(task, buffer);
+ task_show_regs(m, task);
#endif
- buffer = task_context_switch_counts(task, buffer);
- return buffer - orig;
+ task_context_switch_counts(m, task);
+ return 0;
}
/*
@@ -390,14 +389,14 @@ static cputime_t task_gtime(struct task_struct *p)
return p->gtime;
}
-static int do_task_stat(struct task_struct *task, char *buffer, int whole)
+static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task, int whole)
{
unsigned long vsize, eip, esp, wchan = ~0UL;
long priority, nice;
int tty_pgrp = -1, tty_nr = 0;
sigset_t sigign, sigcatch;
char state;
- int res;
pid_t ppid = 0, pgid = -1, sid = -1;
int num_threads = 0;
struct mm_struct *mm;
@@ -409,9 +408,6 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
unsigned long rsslim = 0;
char tcomm[sizeof(task->comm)];
unsigned long flags;
- struct pid_namespace *ns;
-
- ns = current->nsproxy->pid_ns;
state = *get_task_state(task);
vsize = eip = esp = 0;
@@ -498,10 +494,10 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
/* convert nsec -> ticks */
start_time = nsec_to_clock_t(start_time);
- res = sprintf(buffer, "%d (%s) %c %d %d %d %d %d %u %lu \
+ seq_printf(m, "%d (%s) %c %d %d %d %d %d %u %lu \
%lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \
%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld\n",
- task_pid_nr_ns(task, ns),
+ pid_nr_ns(pid, ns),
tcomm,
state,
ppid,
@@ -550,20 +546,23 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
cputime_to_clock_t(cgtime));
if (mm)
mmput(mm);
- return res;
+ return 0;
}
-int proc_tid_stat(struct task_struct *task, char *buffer)
+int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
{
- return do_task_stat(task, buffer, 0);
+ return do_task_stat(m, ns, pid, task, 0);
}
-int proc_tgid_stat(struct task_struct *task, char *buffer)
+int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
{
- return do_task_stat(task, buffer, 1);
+ return do_task_stat(m, ns, pid, task, 1);
}
-int proc_pid_statm(struct task_struct *task, char *buffer)
+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;
struct mm_struct *mm = get_task_mm(task);
@@ -572,7 +571,8 @@ int proc_pid_statm(struct task_struct *task, char *buffer)
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);
- return sprintf(buffer, "%d %d %d %d %d %d %d\n",
- size, resident, shared, text, lib, data, 0);
+ return 0;
}
diff --git a/fs/proc/base.c b/fs/proc/base.c
index c59852b3878..a0c4ba6c6e5 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -121,6 +121,10 @@ struct pid_entry {
NOD(NAME, (S_IFREG|(MODE)), \
NULL, &proc_info_file_operations, \
{ .proc_read = &proc_##OTYPE } )
+#define ONE(NAME, MODE, OTYPE) \
+ NOD(NAME, (S_IFREG|(MODE)), \
+ NULL, &proc_single_file_operations, \
+ { .proc_show = &proc_##OTYPE } )
int maps_protect;
EXPORT_SYMBOL(maps_protect);
@@ -502,7 +506,7 @@ static const struct inode_operations proc_def_inode_operations = {
.setattr = proc_setattr,
};
-extern struct seq_operations mounts_op;
+extern const struct seq_operations mounts_op;
struct proc_mounts {
struct seq_file m;
int event;
@@ -581,7 +585,7 @@ static const struct file_operations proc_mounts_operations = {
.poll = mounts_poll,
};
-extern struct seq_operations mountstats_op;
+extern const struct seq_operations mountstats_op;
static int mountstats_open(struct inode *inode, struct file *file)
{
int ret = seq_open(file, &mountstats_op);
@@ -658,6 +662,45 @@ static const struct file_operations proc_info_file_operations = {
.read = proc_info_read,
};
+static int proc_single_show(struct seq_file *m, void *v)
+{
+ struct inode *inode = m->private;
+ struct pid_namespace *ns;
+ struct pid *pid;
+ struct task_struct *task;
+ int ret;
+
+ ns = inode->i_sb->s_fs_info;
+ pid = proc_pid(inode);
+ task = get_pid_task(pid, PIDTYPE_PID);
+ if (!task)
+ return -ESRCH;
+
+ ret = PROC_I(inode)->op.proc_show(m, ns, pid, task);
+
+ put_task_struct(task);
+ return ret;
+}
+
+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;
+}
+
+static const struct file_operations proc_single_file_operations = {
+ .open = proc_single_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static int mem_open(struct inode* inode, struct file* file)
{
file->private_data = (void*)((long)current->self_exec_id);
@@ -2058,15 +2101,23 @@ static const struct file_operations proc_coredump_filter_operations = {
static int proc_self_readlink(struct dentry *dentry, char __user *buffer,
int buflen)
{
+ struct pid_namespace *ns = dentry->d_sb->s_fs_info;
+ pid_t pid = task_pid_nr_ns(current, ns);
char tmp[PROC_NUMBUF];
- sprintf(tmp, "%d", task_tgid_vnr(current));
+ if (!pid)
+ return -ENOENT;
+ sprintf(tmp, "%d", pid);
return vfs_readlink(dentry,buffer,buflen,tmp);
}
static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
{
+ struct pid_namespace *ns = dentry->d_sb->s_fs_info;
+ pid_t pid = task_pid_nr_ns(current, ns);
char tmp[PROC_NUMBUF];
- sprintf(tmp, "%d", task_tgid_vnr(current));
+ if (!pid)
+ return ERR_PTR(-ENOENT);
+ sprintf(tmp, "%d", pid);
return ERR_PTR(vfs_follow_link(nd,tmp));
}
@@ -2231,14 +2282,14 @@ static const struct pid_entry tgid_base_stuff[] = {
DIR("fdinfo", S_IRUSR|S_IXUSR, fdinfo),
REG("environ", S_IRUSR, environ),
INF("auxv", S_IRUSR, pid_auxv),
- INF("status", S_IRUGO, pid_status),
+ ONE("status", S_IRUGO, pid_status),
INF("limits", S_IRUSR, pid_limits),
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, pid_sched),
#endif
INF("cmdline", S_IRUGO, pid_cmdline),
- INF("stat", S_IRUGO, tgid_stat),
- INF("statm", S_IRUGO, pid_statm),
+ ONE("stat", S_IRUGO, tgid_stat),
+ ONE("statm", S_IRUGO, pid_statm),
REG("maps", S_IRUGO, maps),
#ifdef CONFIG_NUMA
REG("numa_maps", S_IRUGO, numa_maps),
@@ -2562,14 +2613,14 @@ static const struct pid_entry tid_base_stuff[] = {
DIR("fdinfo", S_IRUSR|S_IXUSR, fdinfo),
REG("environ", S_IRUSR, environ),
INF("auxv", S_IRUSR, pid_auxv),
- INF("status", S_IRUGO, pid_status),
+ ONE("status", S_IRUGO, pid_status),
INF("limits", S_IRUSR, pid_limits),
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, pid_sched),
#endif
INF("cmdline", S_IRUGO, pid_cmdline),
- INF("stat", S_IRUGO, tid_stat),
- INF("statm", S_IRUGO, pid_statm),
+ ONE("stat", S_IRUGO, tid_stat),
+ ONE("statm", S_IRUGO, pid_statm),
REG("maps", S_IRUGO, maps),
#ifdef CONFIG_NUMA
REG("numa_maps", S_IRUGO, numa_maps),
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 6a2fe5187b6..68971e66cd4 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -25,12 +25,6 @@
#include "internal.h"
-static ssize_t proc_file_read(struct file *file, char __user *buf,
- size_t nbytes, loff_t *ppos);
-static ssize_t proc_file_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos);
-static loff_t proc_file_lseek(struct file *, loff_t, int);
-
DEFINE_SPINLOCK(proc_subdir_lock);
static int proc_match(int len, const char *name, struct proc_dir_entry *de)
@@ -40,12 +34,6 @@ static int proc_match(int len, const char *name, struct proc_dir_entry *de)
return !memcmp(name, de->name, len);
}
-static const struct file_operations proc_file_operations = {
- .llseek = proc_file_lseek,
- .read = proc_file_read,
- .write = proc_file_write,
-};
-
/* buffer size is one page but our output routines use some slack for overruns */
#define PROC_BLOCK_SIZE (PAGE_SIZE - 1024)
@@ -233,6 +221,12 @@ proc_file_lseek(struct file *file, loff_t offset, int orig)
return retval;
}
+static const struct file_operations proc_file_operations = {
+ .llseek = proc_file_lseek,
+ .read = proc_file_read,
+ .write = proc_file_write,
+};
+
static int proc_notify_change(struct dentry *dentry, struct iattr *iattr)
{
struct inode *inode = dentry->d_inode;
@@ -406,12 +400,12 @@ struct dentry *proc_lookup(struct inode * dir, struct dentry *dentry, struct nam
spin_unlock(&proc_subdir_lock);
error = -EINVAL;
inode = proc_get_inode(dir->i_sb, ino, de);
- spin_lock(&proc_subdir_lock);
- break;
+ goto out_unlock;
}
}
}
spin_unlock(&proc_subdir_lock);
+out_unlock:
unlock_kernel();
if (inode) {
@@ -527,6 +521,7 @@ static const struct inode_operations proc_dir_inode_operations = {
static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp)
{
unsigned int i;
+ struct proc_dir_entry *tmp;
i = get_inode_number();
if (i == 0)
@@ -550,6 +545,15 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp
}
spin_lock(&proc_subdir_lock);
+
+ for (tmp = dir->subdir; tmp; tmp = tmp->next)
+ if (strcmp(tmp->name, dp->name) == 0) {
+ printk(KERN_WARNING "proc_dir_entry '%s' already "
+ "registered\n", dp->name);
+ dump_stack();
+ break;
+ }
+
dp->next = dir->subdir;
dp->parent = dir;
dir->subdir = dp;
@@ -558,7 +562,7 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp
return 0;
}
-static struct proc_dir_entry *proc_create(struct proc_dir_entry **parent,
+static struct proc_dir_entry *__proc_create(struct proc_dir_entry **parent,
const char *name,
mode_t mode,
nlink_t nlink)
@@ -601,7 +605,7 @@ struct proc_dir_entry *proc_symlink(const char *name,
{
struct proc_dir_entry *ent;
- ent = proc_create(&parent,name,
+ ent = __proc_create(&parent, name,
(S_IFLNK | S_IRUGO | S_IWUGO | S_IXUGO),1);
if (ent) {
@@ -626,7 +630,7 @@ struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode,
{
struct proc_dir_entry *ent;
- ent = proc_create(&parent, name, S_IFDIR | mode, 2);
+ ent = __proc_create(&parent, name, S_IFDIR | mode, 2);
if (ent) {
if (proc_register(parent, ent) < 0) {
kfree(ent);
@@ -660,7 +664,7 @@ struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
nlink = 1;
}
- ent = proc_create(&parent,name,mode,nlink);
+ ent = __proc_create(&parent, name, mode, nlink);
if (ent) {
if (proc_register(parent, ent) < 0) {
kfree(ent);
@@ -670,6 +674,38 @@ struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
return ent;
}
+struct proc_dir_entry *proc_create(const char *name, mode_t mode,
+ struct proc_dir_entry *parent,
+ const struct file_operations *proc_fops)
+{
+ struct proc_dir_entry *pde;
+ nlink_t nlink;
+
+ if (S_ISDIR(mode)) {
+ if ((mode & S_IALLUGO) == 0)
+ mode |= S_IRUGO | S_IXUGO;
+ nlink = 2;
+ } else {
+ if ((mode & S_IFMT) == 0)
+ mode |= S_IFREG;
+ if ((mode & S_IALLUGO) == 0)
+ mode |= S_IRUGO;
+ nlink = 1;
+ }
+
+ pde = __proc_create(&parent, name, mode, nlink);
+ if (!pde)
+ goto out;
+ pde->proc_fops = proc_fops;
+ if (proc_register(parent, pde) < 0)
+ goto out_free;
+ return pde;
+out_free:
+ kfree(pde);
+out:
+ return NULL;
+}
+
void free_proc_entry(struct proc_dir_entry *de)
{
unsigned int ino = de->low_ino;
@@ -679,7 +715,7 @@ void free_proc_entry(struct proc_dir_entry *de)
release_inode_number(ino);
- if (S_ISLNK(de->mode) && de->data)
+ if (S_ISLNK(de->mode))
kfree(de->data);
kfree(de);
}
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 6ecf6396f07..82b3a1b5a70 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -467,4 +467,3 @@ out_no_root:
de_put(&proc_root);
return -ENOMEM;
}
-MODULE_LICENSE("GPL");
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 7d57e806992..ea496ffeabe 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -46,12 +46,17 @@ extern int nommu_vma_show(struct seq_file *, struct vm_area_struct *);
extern int maps_protect;
-extern void create_seq_entry(char *name, mode_t mode, const struct file_operations *f);
+extern void create_seq_entry(char *name, mode_t mode,
+ const struct file_operations *f);
extern int proc_exe_link(struct inode *, struct dentry **, struct vfsmount **);
-extern int proc_tid_stat(struct task_struct *, char *);
-extern int proc_tgid_stat(struct task_struct *, char *);
-extern int proc_pid_status(struct task_struct *, char *);
-extern int proc_pid_statm(struct task_struct *, char *);
+extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task);
+extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task);
+extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task);
+extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task);
extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
extern const struct file_operations proc_maps_operations;
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 7dd26e18cbf..e78c81fcf54 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -12,7 +12,6 @@
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/user.h>
-#include <linux/a.out.h>
#include <linux/capability.h>
#include <linux/elf.h>
#include <linux/elfcore.h>
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index 22f789de390..5d9147b9d73 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -116,7 +116,7 @@ static void *nommu_vma_list_next(struct seq_file *m, void *v, loff_t *pos)
return rb_next((struct rb_node *) v);
}
-static struct seq_operations proc_nommu_vma_list_seqop = {
+static const struct seq_operations proc_nommu_vma_list_seqop = {
.start = nommu_vma_list_start,
.next = nommu_vma_list_next,
.stop = nommu_vma_list_stop,
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 2686592dbcb..468805d40e2 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -222,7 +222,7 @@ static int meminfo_read_proc(char *page, char **start, off_t off,
#undef K
}
-extern struct seq_operations fragmentation_op;
+extern const struct seq_operations fragmentation_op;
static int fragmentation_open(struct inode *inode, struct file *file)
{
(void)inode;
@@ -236,7 +236,7 @@ static const struct file_operations fragmentation_file_operations = {
.release = seq_release,
};
-extern struct seq_operations pagetypeinfo_op;
+extern const struct seq_operations pagetypeinfo_op;
static int pagetypeinfo_open(struct inode *inode, struct file *file)
{
return seq_open(file, &pagetypeinfo_op);
@@ -249,7 +249,7 @@ static const struct file_operations pagetypeinfo_file_ops = {
.release = seq_release,
};
-extern struct seq_operations zoneinfo_op;
+extern const struct seq_operations zoneinfo_op;
static int zoneinfo_open(struct inode *inode, struct file *file)
{
return seq_open(file, &zoneinfo_op);
@@ -274,7 +274,7 @@ static int version_read_proc(char *page, char **start, off_t off,
return proc_calc_metrics(page, start, off, count, eof, len);
}
-extern struct seq_operations cpuinfo_op;
+extern const struct seq_operations cpuinfo_op;
static int cpuinfo_open(struct inode *inode, struct file *file)
{
return seq_open(file, &cpuinfo_op);
@@ -327,7 +327,7 @@ static void devinfo_stop(struct seq_file *f, void *v)
/* Nothing to do */
}
-static struct seq_operations devinfo_ops = {
+static const struct seq_operations devinfo_ops = {
.start = devinfo_start,
.next = devinfo_next,
.stop = devinfo_stop,
@@ -346,7 +346,7 @@ static const struct file_operations proc_devinfo_operations = {
.release = seq_release,
};
-extern struct seq_operations vmstat_op;
+extern const struct seq_operations vmstat_op;
static int vmstat_open(struct inode *inode, struct file *file)
{
return seq_open(file, &vmstat_op);
@@ -377,7 +377,7 @@ static int stram_read_proc(char *page, char **start, off_t off,
#endif
#ifdef CONFIG_BLOCK
-extern struct seq_operations partitions_op;
+extern const struct seq_operations partitions_op;
static int partitions_open(struct inode *inode, struct file *file)
{
return seq_open(file, &partitions_op);
@@ -389,7 +389,7 @@ static const struct file_operations proc_partitions_operations = {
.release = seq_release,
};
-extern struct seq_operations diskstats_op;
+extern const struct seq_operations diskstats_op;
static int diskstats_open(struct inode *inode, struct file *file)
{
return seq_open(file, &diskstats_op);
@@ -403,7 +403,7 @@ static const struct file_operations proc_diskstats_operations = {
#endif
#ifdef CONFIG_MODULES
-extern struct seq_operations modules_op;
+extern const struct seq_operations modules_op;
static int modules_open(struct inode *inode, struct file *file)
{
return seq_open(file, &modules_op);
@@ -430,7 +430,7 @@ static const struct file_operations proc_slabinfo_operations = {
};
#ifdef CONFIG_DEBUG_SLAB_LEAK
-extern struct seq_operations slabstats_op;
+extern const struct seq_operations slabstats_op;
static int slabstats_open(struct inode *inode, struct file *file)
{
unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
@@ -604,7 +604,7 @@ static void int_seq_stop(struct seq_file *f, void *v)
}
-static struct seq_operations int_seq_ops = {
+static const struct seq_operations int_seq_ops = {
.start = int_seq_start,
.next = int_seq_next,
.stop = int_seq_stop,
diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index 4823c9677fa..14e9b5aaf86 100644
--- a/fs/proc/proc_net.c
+++ b/fs/proc/proc_net.c
@@ -67,12 +67,7 @@ EXPORT_SYMBOL_GPL(seq_release_net);
struct proc_dir_entry *proc_net_fops_create(struct net *net,
const char *name, mode_t mode, const struct file_operations *fops)
{
- struct proc_dir_entry *res;
-
- res = create_proc_entry(name, mode, net->proc_net);
- if (res)
- res->proc_fops = fops;
- return res;
+ return proc_create(name, mode, net->proc_net, fops);
}
EXPORT_SYMBOL_GPL(proc_net_fops_create);
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 4e57fcf8598..b9cb23c08f6 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -9,7 +9,7 @@
static struct dentry_operations proc_sys_dentry_operations;
static const struct file_operations proc_sys_file_operations;
-static struct inode_operations proc_sys_inode_operations;
+static const struct inode_operations proc_sys_inode_operations;
static void proc_sys_refresh_inode(struct inode *inode, struct ctl_table *table)
{
@@ -446,7 +446,7 @@ static const struct file_operations proc_sys_file_operations = {
.readdir = proc_sys_readdir,
};
-static struct inode_operations proc_sys_inode_operations = {
+static const struct inode_operations proc_sys_inode_operations = {
.lookup = proc_sys_lookup,
.permission = proc_sys_permission,
.setattr = proc_sys_setattr,
diff --git a/fs/proc/proc_tty.c b/fs/proc/proc_tty.c
index 22846225acf..49816e00b51 100644
--- a/fs/proc/proc_tty.c
+++ b/fs/proc/proc_tty.c
@@ -15,9 +15,6 @@
#include <linux/seq_file.h>
#include <linux/bitops.h>
-static int tty_ldiscs_read_proc(char *page, char **start, off_t off,
- int count, int *eof, void *data);
-
/*
* The /proc/tty directory inodes...
*/
@@ -120,7 +117,7 @@ static void t_stop(struct seq_file *m, void *v)
mutex_unlock(&tty_mutex);
}
-static struct seq_operations tty_drivers_op = {
+static const struct seq_operations tty_drivers_op = {
.start = t_start,
.next = t_next,
.stop = t_stop,
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 81f99e691f9..ef0fb57fc9e 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -232,6 +232,7 @@ void pid_ns_release_proc(struct pid_namespace *ns)
EXPORT_SYMBOL(proc_symlink);
EXPORT_SYMBOL(proc_mkdir);
EXPORT_SYMBOL(create_proc_entry);
+EXPORT_SYMBOL(proc_create);
EXPORT_SYMBOL(remove_proc_entry);
EXPORT_SYMBOL(proc_root);
EXPORT_SYMBOL(proc_root_fs);
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 38338ed98cc..ae4d3f2c8cb 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -9,13 +9,14 @@
#include <linux/mempolicy.h>
#include <linux/swap.h>
#include <linux/swapops.h>
+#include <linux/seq_file.h>
#include <asm/elf.h>
#include <asm/uaccess.h>
#include <asm/tlbflush.h>
#include "internal.h"
-char *task_mem(struct mm_struct *mm, char *buffer)
+void task_mem(struct seq_file *m, struct mm_struct *mm)
{
unsigned long data, text, lib;
unsigned long hiwater_vm, total_vm, hiwater_rss, total_rss;
@@ -37,7 +38,7 @@ char *task_mem(struct mm_struct *mm, char *buffer)
data = mm->total_vm - mm->shared_vm - mm->stack_vm;
text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10;
lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text;
- buffer += sprintf(buffer,
+ seq_printf(m,
"VmPeak:\t%8lu kB\n"
"VmSize:\t%8lu kB\n"
"VmLck:\t%8lu kB\n"
@@ -56,7 +57,6 @@ char *task_mem(struct mm_struct *mm, char *buffer)
data << (PAGE_SHIFT-10),
mm->stack_vm << (PAGE_SHIFT-10), text, lib,
(PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10);
- return buffer;
}
unsigned long task_vsize(struct mm_struct *mm)
@@ -216,7 +216,7 @@ static void m_stop(struct seq_file *m, void *v)
}
static int do_maps_open(struct inode *inode, struct file *file,
- struct seq_operations *ops)
+ const struct seq_operations *ops)
{
struct proc_maps_private *priv;
int ret = -ENOMEM;
@@ -299,7 +299,7 @@ static int show_map(struct seq_file *m, void *v)
return 0;
}
-static struct seq_operations proc_pid_maps_op = {
+static const struct seq_operations proc_pid_maps_op = {
.start = m_start,
.next = m_next,
.stop = m_stop,
@@ -434,7 +434,7 @@ static int show_smap(struct seq_file *m, void *v)
return ret;
}
-static struct seq_operations proc_pid_smaps_op = {
+static const struct seq_operations proc_pid_smaps_op = {
.start = m_start,
.next = m_next,
.stop = m_stop,
@@ -734,7 +734,7 @@ static int show_numa_map_checked(struct seq_file *m, void *v)
return show_numa_map(m, v);
}
-static struct seq_operations proc_pid_numa_maps_op = {
+static const struct seq_operations proc_pid_numa_maps_op = {
.start = m_start,
.next = m_next,
.stop = m_stop,
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 1932c2ca345..abfc6f5e56c 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -12,7 +12,7 @@
* each process that owns it. Non-shared memory is counted
* accurately.
*/
-char *task_mem(struct mm_struct *mm, char *buffer)
+void task_mem(struct seq_file *m, struct mm_struct *mm)
{
struct vm_list_struct *vml;
unsigned long bytes = 0, sbytes = 0, slack = 0;
@@ -58,14 +58,13 @@ char *task_mem(struct mm_struct *mm, char *buffer)
bytes += kobjsize(current); /* includes kernel stack */
- buffer += sprintf(buffer,
+ seq_printf(m,
"Mem:\t%8lu bytes\n"
"Slack:\t%8lu bytes\n"
"Shared:\t%8lu bytes\n",
bytes, slack, sbytes);
up_read(&mm->mmap_sem);
- return buffer;
}
unsigned long task_vsize(struct mm_struct *mm)
@@ -199,7 +198,7 @@ static void *m_next(struct seq_file *m, void *_vml, loff_t *pos)
return vml ? vml->next : NULL;
}
-static struct seq_operations proc_pid_maps_ops = {
+static const struct seq_operations proc_pid_maps_ops = {
.start = m_start,
.next = m_next,
.stop = m_stop,
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 523e1098ae8..9ac0f5e064e 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -10,7 +10,6 @@
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/user.h>
-#include <linux/a.out.h>
#include <linux/elf.h>
#include <linux/elfcore.h>
#include <linux/highmem.h>
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-12 06:11:22 +0000