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-rw-r--r--fs/proc/Kconfig4
-rw-r--r--fs/proc/Makefile1
-rw-r--r--fs/proc/base.c104
-rw-r--r--fs/proc/bootconfig.c89
-rw-r--r--fs/proc/cpuinfo.c12
-rw-r--r--fs/proc/generic.c38
-rw-r--r--fs/proc/inode.c76
-rw-r--r--fs/proc/internal.h5
-rw-r--r--fs/proc/kcore.c13
-rw-r--r--fs/proc/kmsg.c14
-rw-r--r--fs/proc/namespaces.c24
-rw-r--r--fs/proc/page.c54
-rw-r--r--fs/proc/proc_net.c32
-rw-r--r--fs/proc/proc_sysctl.c2
-rw-r--r--fs/proc/root.c2
-rw-r--r--fs/proc/stat.c12
-rw-r--r--fs/proc/task_mmu.c4
-rw-r--r--fs/proc/uptime.c3
-rw-r--r--fs/proc/vmcore.c10
19 files changed, 365 insertions, 134 deletions
diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig
index 733881a6387b..27ef84d99f59 100644
--- a/fs/proc/Kconfig
+++ b/fs/proc/Kconfig
@@ -103,3 +103,7 @@ config PROC_CHILDREN
config PROC_PID_ARCH_STATUS
def_bool n
depends on PROC_FS
+
+config PROC_CPU_RESCTRL
+ def_bool n
+ depends on PROC_FS
diff --git a/fs/proc/Makefile b/fs/proc/Makefile
index ead487e80510..bd08616ed8ba 100644
--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -33,3 +33,4 @@ proc-$(CONFIG_PROC_KCORE) += kcore.o
proc-$(CONFIG_PROC_VMCORE) += vmcore.o
proc-$(CONFIG_PRINTK) += kmsg.o
proc-$(CONFIG_PROC_PAGE_MONITOR) += page.o
+proc-$(CONFIG_BOOT_CONFIG) += bootconfig.o
diff --git a/fs/proc/base.c b/fs/proc/base.c
index ebea9501afb8..c7c64272b0fa 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -94,6 +94,8 @@
#include <linux/sched/debug.h>
#include <linux/sched/stat.h>
#include <linux/posix-timers.h>
+#include <linux/time_namespace.h>
+#include <linux/resctrl.h>
#include <trace/events/oom.h>
#include "internal.h"
#include "fd.h"
@@ -1533,6 +1535,96 @@ static const struct file_operations proc_pid_sched_autogroup_operations = {
#endif /* CONFIG_SCHED_AUTOGROUP */
+#ifdef CONFIG_TIME_NS
+static int timens_offsets_show(struct seq_file *m, void *v)
+{
+ struct task_struct *p;
+
+ p = get_proc_task(file_inode(m->file));
+ if (!p)
+ return -ESRCH;
+ proc_timens_show_offsets(p, m);
+
+ put_task_struct(p);
+
+ return 0;
+}
+
+static ssize_t timens_offsets_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct inode *inode = file_inode(file);
+ struct proc_timens_offset offsets[2];
+ char *kbuf = NULL, *pos, *next_line;
+ struct task_struct *p;
+ int ret, noffsets;
+
+ /* Only allow < page size writes at the beginning of the file */
+ if ((*ppos != 0) || (count >= PAGE_SIZE))
+ return -EINVAL;
+
+ /* Slurp in the user data */
+ kbuf = memdup_user_nul(buf, count);
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
+
+ /* Parse the user data */
+ ret = -EINVAL;
+ noffsets = 0;
+ for (pos = kbuf; pos; pos = next_line) {
+ struct proc_timens_offset *off = &offsets[noffsets];
+ int err;
+
+ /* Find the end of line and ensure we don't look past it */
+ next_line = strchr(pos, '\n');
+ if (next_line) {
+ *next_line = '\0';
+ next_line++;
+ if (*next_line == '\0')
+ next_line = NULL;
+ }
+
+ err = sscanf(pos, "%u %lld %lu", &off->clockid,
+ &off->val.tv_sec, &off->val.tv_nsec);
+ if (err != 3 || off->val.tv_nsec >= NSEC_PER_SEC)
+ goto out;
+ noffsets++;
+ if (noffsets == ARRAY_SIZE(offsets)) {
+ if (next_line)
+ count = next_line - kbuf;
+ break;
+ }
+ }
+
+ ret = -ESRCH;
+ p = get_proc_task(inode);
+ if (!p)
+ goto out;
+ ret = proc_timens_set_offset(file, p, offsets, noffsets);
+ put_task_struct(p);
+ if (ret)
+ goto out;
+
+ ret = count;
+out:
+ kfree(kbuf);
+ return ret;
+}
+
+static int timens_offsets_open(struct inode *inode, struct file *filp)
+{
+ return single_open(filp, timens_offsets_show, inode);
+}
+
+static const struct file_operations proc_timens_offsets_operations = {
+ .open = timens_offsets_open,
+ .read = seq_read,
+ .write = timens_offsets_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+#endif /* CONFIG_TIME_NS */
+
static ssize_t comm_write(struct file *file, const char __user *buf,
size_t count, loff_t *offset)
{
@@ -1626,8 +1718,7 @@ static const char *proc_pid_get_link(struct dentry *dentry,
if (error)
goto out;
- nd_jump_link(&path);
- return NULL;
+ error = nd_jump_link(&path);
out:
return ERR_PTR(error);
}
@@ -3016,6 +3107,9 @@ static const struct pid_entry tgid_base_stuff[] = {
#ifdef CONFIG_SCHED_AUTOGROUP
REG("autogroup", S_IRUGO|S_IWUSR, proc_pid_sched_autogroup_operations),
#endif
+#ifdef CONFIG_TIME_NS
+ REG("timens_offsets", S_IRUGO|S_IWUSR, proc_timens_offsets_operations),
+#endif
REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
ONE("syscall", S_IRUSR, proc_pid_syscall),
@@ -3061,6 +3155,9 @@ static const struct pid_entry tgid_base_stuff[] = {
#ifdef CONFIG_CGROUPS
ONE("cgroup", S_IRUGO, proc_cgroup_show),
#endif
+#ifdef CONFIG_PROC_CPU_RESCTRL
+ ONE("cpu_resctrl_groups", S_IRUGO, proc_resctrl_show),
+#endif
ONE("oom_score", S_IRUGO, proc_oom_score),
REG("oom_adj", S_IRUGO|S_IWUSR, proc_oom_adj_operations),
REG("oom_score_adj", S_IRUGO|S_IWUSR, proc_oom_score_adj_operations),
@@ -3461,6 +3558,9 @@ static const struct pid_entry tid_base_stuff[] = {
#ifdef CONFIG_CGROUPS
ONE("cgroup", S_IRUGO, proc_cgroup_show),
#endif
+#ifdef CONFIG_PROC_CPU_RESCTRL
+ ONE("cpu_resctrl_groups", S_IRUGO, proc_resctrl_show),
+#endif
ONE("oom_score", S_IRUGO, proc_oom_score),
REG("oom_adj", S_IRUGO|S_IWUSR, proc_oom_adj_operations),
REG("oom_score_adj", S_IRUGO|S_IWUSR, proc_oom_score_adj_operations),
diff --git a/fs/proc/bootconfig.c b/fs/proc/bootconfig.c
new file mode 100644
index 000000000000..9955d75c0585
--- /dev/null
+++ b/fs/proc/bootconfig.c
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * /proc/bootconfig - Extra boot configuration
+ */
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/printk.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/bootconfig.h>
+#include <linux/slab.h>
+
+static char *saved_boot_config;
+
+static int boot_config_proc_show(struct seq_file *m, void *v)
+{
+ if (saved_boot_config)
+ seq_puts(m, saved_boot_config);
+ return 0;
+}
+
+/* Rest size of buffer */
+#define rest(dst, end) ((end) > (dst) ? (end) - (dst) : 0)
+
+/* Return the needed total length if @size is 0 */
+static int __init copy_xbc_key_value_list(char *dst, size_t size)
+{
+ struct xbc_node *leaf, *vnode;
+ const char *val;
+ char *key, *end = dst + size;
+ int ret = 0;
+
+ key = kzalloc(XBC_KEYLEN_MAX, GFP_KERNEL);
+
+ xbc_for_each_key_value(leaf, val) {
+ ret = xbc_node_compose_key(leaf, key, XBC_KEYLEN_MAX);
+ if (ret < 0)
+ break;
+ ret = snprintf(dst, rest(dst, end), "%s = ", key);
+ if (ret < 0)
+ break;
+ dst += ret;
+ vnode = xbc_node_get_child(leaf);
+ if (vnode && xbc_node_is_array(vnode)) {
+ xbc_array_for_each_value(vnode, val) {
+ ret = snprintf(dst, rest(dst, end), "\"%s\"%s",
+ val, vnode->next ? ", " : "\n");
+ if (ret < 0)
+ goto out;
+ dst += ret;
+ }
+ } else {
+ ret = snprintf(dst, rest(dst, end), "\"%s\"\n", val);
+ if (ret < 0)
+ break;
+ dst += ret;
+ }
+ }
+out:
+ kfree(key);
+
+ return ret < 0 ? ret : dst - (end - size);
+}
+
+static int __init proc_boot_config_init(void)
+{
+ int len;
+
+ len = copy_xbc_key_value_list(NULL, 0);
+ if (len < 0)
+ return len;
+
+ if (len > 0) {
+ saved_boot_config = kzalloc(len + 1, GFP_KERNEL);
+ if (!saved_boot_config)
+ return -ENOMEM;
+
+ len = copy_xbc_key_value_list(saved_boot_config, len + 1);
+ if (len < 0) {
+ kfree(saved_boot_config);
+ return len;
+ }
+ }
+
+ proc_create_single("bootconfig", 0, NULL, boot_config_proc_show);
+
+ return 0;
+}
+fs_initcall(proc_boot_config_init);
diff --git a/fs/proc/cpuinfo.c b/fs/proc/cpuinfo.c
index 96f1087e372c..c1dea9b8222e 100644
--- a/fs/proc/cpuinfo.c
+++ b/fs/proc/cpuinfo.c
@@ -16,16 +16,16 @@ static int cpuinfo_open(struct inode *inode, struct file *file)
return seq_open(file, &cpuinfo_op);
}
-static const struct file_operations proc_cpuinfo_operations = {
- .open = cpuinfo_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
+static const struct proc_ops cpuinfo_proc_ops = {
+ .proc_open = cpuinfo_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = seq_release,
};
static int __init proc_cpuinfo_init(void)
{
- proc_create("cpuinfo", 0, NULL, &proc_cpuinfo_operations);
+ proc_create("cpuinfo", 0, NULL, &cpuinfo_proc_ops);
return 0;
}
fs_initcall(proc_cpuinfo_init);
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 074e9585c699..3faed94e4b65 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -473,7 +473,7 @@ struct proc_dir_entry *proc_mkdir_data(const char *name, umode_t mode,
ent = __proc_create(&parent, name, S_IFDIR | mode, 2);
if (ent) {
ent->data = data;
- ent->proc_fops = &proc_dir_operations;
+ ent->proc_dir_ops = &proc_dir_operations;
ent->proc_iops = &proc_dir_inode_operations;
ent = proc_register(parent, ent);
}
@@ -503,7 +503,7 @@ struct proc_dir_entry *proc_create_mount_point(const char *name)
ent = __proc_create(&parent, name, mode, 2);
if (ent) {
ent->data = NULL;
- ent->proc_fops = NULL;
+ ent->proc_dir_ops = NULL;
ent->proc_iops = NULL;
ent = proc_register(parent, ent);
}
@@ -533,25 +533,23 @@ struct proc_dir_entry *proc_create_reg(const char *name, umode_t mode,
struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
struct proc_dir_entry *parent,
- const struct file_operations *proc_fops, void *data)
+ const struct proc_ops *proc_ops, void *data)
{
struct proc_dir_entry *p;
- BUG_ON(proc_fops == NULL);
-
p = proc_create_reg(name, mode, &parent, data);
if (!p)
return NULL;
- p->proc_fops = proc_fops;
+ p->proc_ops = proc_ops;
return proc_register(parent, p);
}
EXPORT_SYMBOL(proc_create_data);
struct proc_dir_entry *proc_create(const char *name, umode_t mode,
struct proc_dir_entry *parent,
- const struct file_operations *proc_fops)
+ const struct proc_ops *proc_ops)
{
- return proc_create_data(name, mode, parent, proc_fops, NULL);
+ return proc_create_data(name, mode, parent, proc_ops, NULL);
}
EXPORT_SYMBOL(proc_create);
@@ -573,11 +571,11 @@ static int proc_seq_release(struct inode *inode, struct file *file)
return seq_release(inode, file);
}
-static const struct file_operations proc_seq_fops = {
- .open = proc_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = proc_seq_release,
+static const struct proc_ops proc_seq_ops = {
+ .proc_open = proc_seq_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = proc_seq_release,
};
struct proc_dir_entry *proc_create_seq_private(const char *name, umode_t mode,
@@ -589,7 +587,7 @@ struct proc_dir_entry *proc_create_seq_private(const char *name, umode_t mode,
p = proc_create_reg(name, mode, &parent, data);
if (!p)
return NULL;
- p->proc_fops = &proc_seq_fops;
+ p->proc_ops = &proc_seq_ops;
p->seq_ops = ops;
p->state_size = state_size;
return proc_register(parent, p);
@@ -603,11 +601,11 @@ static int proc_single_open(struct inode *inode, struct file *file)
return single_open(file, de->single_show, de->data);
}
-static const struct file_operations proc_single_fops = {
- .open = proc_single_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
+static const struct proc_ops proc_single_ops = {
+ .proc_open = proc_single_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
};
struct proc_dir_entry *proc_create_single_data(const char *name, umode_t mode,
@@ -619,7 +617,7 @@ struct proc_dir_entry *proc_create_single_data(const char *name, umode_t mode,
p = proc_create_reg(name, mode, &parent, data);
if (!p)
return NULL;
- p->proc_fops = &proc_single_fops;
+ p->proc_ops = &proc_single_ops;
p->single_show = show;
return proc_register(parent, p);
}
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index dbe43a50caf2..6da18316d209 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -163,7 +163,7 @@ static void close_pdeo(struct proc_dir_entry *pde, struct pde_opener *pdeo)
pdeo->closing = true;
spin_unlock(&pde->pde_unload_lock);
file = pdeo->file;
- pde->proc_fops->release(file_inode(file), file);
+ pde->proc_ops->proc_release(file_inode(file), file);
spin_lock(&pde->pde_unload_lock);
/* After ->release. */
list_del(&pdeo->lh);
@@ -200,12 +200,12 @@ static loff_t proc_reg_llseek(struct file *file, loff_t offset, int whence)
struct proc_dir_entry *pde = PDE(file_inode(file));
loff_t rv = -EINVAL;
if (use_pde(pde)) {
- typeof_member(struct file_operations, llseek) llseek;
+ typeof_member(struct proc_ops, proc_lseek) lseek;
- llseek = pde->proc_fops->llseek;
- if (!llseek)
- llseek = default_llseek;
- rv = llseek(file, offset, whence);
+ lseek = pde->proc_ops->proc_lseek;
+ if (!lseek)
+ lseek = default_llseek;
+ rv = lseek(file, offset, whence);
unuse_pde(pde);
}
return rv;
@@ -216,9 +216,9 @@ static ssize_t proc_reg_read(struct file *file, char __user *buf, size_t count,
struct proc_dir_entry *pde = PDE(file_inode(file));
ssize_t rv = -EIO;
if (use_pde(pde)) {
- typeof_member(struct file_operations, read) read;
+ typeof_member(struct proc_ops, proc_read) read;
- read = pde->proc_fops->read;
+ read = pde->proc_ops->proc_read;
if (read)
rv = read(file, buf, count, ppos);
unuse_pde(pde);
@@ -231,9 +231,9 @@ static ssize_t proc_reg_write(struct file *file, const char __user *buf, size_t
struct proc_dir_entry *pde = PDE(file_inode(file));
ssize_t rv = -EIO;
if (use_pde(pde)) {
- typeof_member(struct file_operations, write) write;
+ typeof_member(struct proc_ops, proc_write) write;
- write = pde->proc_fops->write;
+ write = pde->proc_ops->proc_write;
if (write)
rv = write(file, buf, count, ppos);
unuse_pde(pde);
@@ -246,9 +246,9 @@ static __poll_t proc_reg_poll(struct file *file, struct poll_table_struct *pts)
struct proc_dir_entry *pde = PDE(file_inode(file));
__poll_t rv = DEFAULT_POLLMASK;
if (use_pde(pde)) {
- typeof_member(struct file_operations, poll) poll;
+ typeof_member(struct proc_ops, proc_poll) poll;
- poll = pde->proc_fops->poll;
+ poll = pde->proc_ops->proc_poll;
if (poll)
rv = poll(file, pts);
unuse_pde(pde);
@@ -261,9 +261,9 @@ static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigne
struct proc_dir_entry *pde = PDE(file_inode(file));
long rv = -ENOTTY;
if (use_pde(pde)) {
- typeof_member(struct file_operations, unlocked_ioctl) ioctl;
+ typeof_member(struct proc_ops, proc_ioctl) ioctl;
- ioctl = pde->proc_fops->unlocked_ioctl;
+ ioctl = pde->proc_ops->proc_ioctl;
if (ioctl)
rv = ioctl(file, cmd, arg);
unuse_pde(pde);
@@ -277,9 +277,9 @@ static long proc_reg_compat_ioctl(struct file *file, unsigned int cmd, unsigned
struct proc_dir_entry *pde = PDE(file_inode(file));
long rv = -ENOTTY;
if (use_pde(pde)) {
- typeof_member(struct file_operations, compat_ioctl) compat_ioctl;
+ typeof_member(struct proc_ops, proc_compat_ioctl) compat_ioctl;
- compat_ioctl = pde->proc_fops->compat_ioctl;
+ compat_ioctl = pde->proc_ops->proc_compat_ioctl;
if (compat_ioctl)
rv = compat_ioctl(file, cmd, arg);
unuse_pde(pde);
@@ -293,9 +293,9 @@ static int proc_reg_mmap(struct file *file, struct vm_area_struct *vma)
struct proc_dir_entry *pde = PDE(file_inode(file));
int rv = -EIO;
if (use_pde(pde)) {
- typeof_member(struct file_operations, mmap) mmap;
+ typeof_member(struct proc_ops, proc_mmap) mmap;
- mmap = pde->proc_fops->mmap;
+ mmap = pde->proc_ops->proc_mmap;
if (mmap)
rv = mmap(file, vma);
unuse_pde(pde);
@@ -312,9 +312,9 @@ proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr,
unsigned long rv = -EIO;
if (use_pde(pde)) {
- typeof_member(struct file_operations, get_unmapped_area) get_area;
+ typeof_member(struct proc_ops, proc_get_unmapped_area) get_area;
- get_area = pde->proc_fops->get_unmapped_area;
+ get_area = pde->proc_ops->proc_get_unmapped_area;
#ifdef CONFIG_MMU
if (!get_area)
get_area = current->mm->get_unmapped_area;
@@ -333,8 +333,8 @@ static int proc_reg_open(struct inode *inode, struct file *file)
{
struct proc_dir_entry *pde = PDE(inode);
int rv = 0;
- typeof_member(struct file_operations, open) open;
- typeof_member(struct file_operations, release) release;
+ typeof_member(struct proc_ops, proc_open) open;
+ typeof_member(struct proc_ops, proc_release) release;
struct pde_opener *pdeo;
/*
@@ -351,7 +351,7 @@ static int proc_reg_open(struct inode *inode, struct file *file)
if (!use_pde(pde))
return -ENOENT;
- release = pde->proc_fops->release;
+ release = pde->proc_ops->proc_release;
if (release) {
pdeo = kmem_cache_alloc(pde_opener_cache, GFP_KERNEL);
if (!pdeo) {
@@ -360,7 +360,7 @@ static int proc_reg_open(struct inode *inode, struct file *file)
}
}
- open = pde->proc_fops->open;
+ open = pde->proc_ops->proc_open;
if (open)
rv = open(inode, file);
@@ -468,21 +468,23 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
inode->i_size = de->size;
if (de->nlink)
set_nlink(inode, de->nlink);
- WARN_ON(!de->proc_iops);
- inode->i_op = de->proc_iops;
- if (de->proc_fops) {
- if (S_ISREG(inode->i_mode)) {
+
+ if (S_ISREG(inode->i_mode)) {
+ inode->i_op = de->proc_iops;
+ inode->i_fop = &proc_reg_file_ops;
#ifdef CONFIG_COMPAT
- if (!de->proc_fops->compat_ioctl)
- inode->i_fop =
- &proc_reg_file_ops_no_compat;
- else
-#endif
- inode->i_fop = &proc_reg_file_ops;
- } else {
- inode->i_fop = de->proc_fops;
+ if (!de->proc_ops->proc_compat_ioctl) {
+ inode->i_fop = &proc_reg_file_ops_no_compat;
}
- }
+#endif
+ } else if (S_ISDIR(inode->i_mode)) {
+ inode->i_op = de->proc_iops;
+ inode->i_fop = de->proc_dir_ops;
+ } else if (S_ISLNK(inode->i_mode)) {
+ inode->i_op = de->proc_iops;
+ inode->i_fop = NULL;
+ } else
+ BUG();
} else
pde_put(de);
return inode;
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 0f3b557c9b77..41587276798e 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -39,7 +39,10 @@ struct proc_dir_entry {
spinlock_t pde_unload_lock;
struct completion *pde_unload_completion;
const struct inode_operations *proc_iops;
- const struct file_operations *proc_fops;
+ union {
+ const struct proc_ops *proc_ops;
+ const struct file_operations *proc_dir_ops;
+ };
const struct dentry_operations *proc_dops;
union {
const struct seq_operations *seq_ops;
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index e2ed8e08cc7a..8ba492d44e68 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -574,11 +574,11 @@ static int release_kcore(struct inode *inode, struct file *file)
return 0;
}
-static const struct file_operations proc_kcore_operations = {
- .read = read_kcore,
- .open = open_kcore,
- .release = release_kcore,
- .llseek = default_llseek,
+static const struct proc_ops kcore_proc_ops = {
+ .proc_read = read_kcore,
+ .proc_open = open_kcore,
+ .proc_release = release_kcore,
+ .proc_lseek = default_llseek,
};
/* just remember that we have to update kcore */
@@ -637,8 +637,7 @@ static void __init add_modules_range(void)
static int __init proc_kcore_init(void)
{
- proc_root_kcore = proc_create("kcore", S_IRUSR, NULL,
- &proc_kcore_operations);
+ proc_root_kcore = proc_create("kcore", S_IRUSR, NULL, &kcore_proc_ops);
if (!proc_root_kcore) {
pr_err("couldn't create /proc/kcore\n");
return 0; /* Always returns 0. */
diff --git a/fs/proc/kmsg.c b/fs/proc/kmsg.c
index 4f4a2abb225e..ec1b7d2fb773 100644
--- a/fs/proc/kmsg.c
+++ b/fs/proc/kmsg.c
@@ -49,17 +49,17 @@ static __poll_t kmsg_poll(struct file *file, poll_table *wait)
}
-static const struct file_operations proc_kmsg_operations = {
- .read = kmsg_read,
- .poll = kmsg_poll,
- .open = kmsg_open,
- .release = kmsg_release,
- .llseek = generic_file_llseek,
+static const struct proc_ops kmsg_proc_ops = {
+ .proc_read = kmsg_read,
+ .proc_poll = kmsg_poll,
+ .proc_open = kmsg_open,
+ .proc_release = kmsg_release,
+ .proc_lseek = generic_file_llseek,
};
static int __init proc_kmsg_init(void)
{
- proc_create("kmsg", S_IRUSR, NULL, &proc_kmsg_operations);
+ proc_create("kmsg", S_IRUSR, NULL, &kmsg_proc_ops);
return 0;
}
fs_initcall(proc_kmsg_init);
diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c
index dd2b35f78b09..8e159fc78c0a 100644
--- a/fs/proc/namespaces.c
+++ b/fs/proc/namespaces.c
@@ -33,6 +33,10 @@ static const struct proc_ns_operations *ns_entries[] = {
#ifdef CONFIG_CGROUPS
&cgroupns_operations,
#endif
+#ifdef CONFIG_TIME_NS
+ &timens_operations,
+ &timens_for_children_operations,
+#endif
};
static const char *proc_ns_get_link(struct dentry *dentry,
@@ -42,22 +46,26 @@ static const char *proc_ns_get_link(struct dentry *dentry,
const struct proc_ns_operations *ns_ops = PROC_I(inode)->ns_ops;
struct task_struct *task;
struct path ns_path;
- void *error = ERR_PTR(-EACCES);
+ int error = -EACCES;
if (!dentry)
return ERR_PTR(-ECHILD);
task = get_proc_task(inode);
if (!task)
- return error;
+ return ERR_PTR(-EACCES);
- if (ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) {
- error = ns_get_path(&ns_path, task, ns_ops);
- if (!error)
- nd_jump_link(&ns_path);
- }
+ if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS))
+ goto out;
+
+ error = ns_get_path(&ns_path, task, ns_ops);
+ if (error)
+ goto out;
+
+ error = nd_jump_link(&ns_path);
+out:
put_task_struct(task);
- return error;
+ return ERR_PTR(error);
}
static int proc_ns_readlink(struct dentry *dentry, char __user *buffer, int buflen)
diff --git a/fs/proc/page.c b/fs/proc/page.c
index 7c952ee732e6..f909243d4a66 100644
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -21,6 +21,21 @@
#define KPMMASK (KPMSIZE - 1)
#define KPMBITS (KPMSIZE * BITS_PER_BYTE)
+static inline unsigned long get_max_dump_pfn(void)
+{
+#ifdef CONFIG_SPARSEMEM
+ /*
+ * The memmap of early sections is completely populated and marked
+ * online even if max_pfn does not fall on a section boundary -
+ * pfn_to_online_page() will succeed on all pages. Allow inspecting
+ * these memmaps.
+ */
+ return round_up(max_pfn, PAGES_PER_SECTION);
+#else
+ return max_pfn;
+#endif
+}
+
/* /proc/kpagecount - an array exposing page counts
*
* Each entry is a u64 representing the corresponding
@@ -29,6 +44,7 @@
static ssize_t kpagecount_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
+ const unsigned long max_dump_pfn = get_max_dump_pfn();
u64 __user *out = (u64 __user *)buf;
struct page *ppage;
unsigned long src = *ppos;
@@ -37,9 +53,11 @@ static ssize_t kpagecount_read(struct file *file, char __user *buf,
u64 pcount;
pfn = src / KPMSIZE;
- count = min_t(size_t, count, (max_pfn * KPMSIZE) - src);
if (src & KPMMASK || count & KPMMASK)
return -EINVAL;
+ if (src >= max_dump_pfn * KPMSIZE)
+ return 0;
+ count = min_t(unsigned long, count, (max_dump_pfn * KPMSIZE) - src);
while (count > 0) {
/*
@@ -71,9 +89,9 @@ static ssize_t kpagecount_read(struct file *file, char __user *buf,
return ret;
}
-static const struct file_operations proc_kpagecount_operations = {
- .llseek = mem_lseek,
- .read = kpagecount_read,
+static const struct proc_ops kpagecount_proc_ops = {
+ .proc_lseek = mem_lseek,
+ .proc_read = kpagecount_read,
};
/* /proc/kpageflags - an array exposing page flags
@@ -206,6 +224,7 @@ u64 stable_page_flags(struct page *page)
static ssize_t kpageflags_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
+ const unsigned long max_dump_pfn = get_max_dump_pfn();
u64 __user *out = (u64 __user *)buf;
struct page *ppage;
unsigned long src = *ppos;
@@ -213,9 +232,11 @@ static ssize_t kpageflags_read(struct file *file, char __user *buf,
ssize_t ret = 0;
pfn = src / KPMSIZE;
- count = min_t(unsigned long, count, (max_pfn * KPMSIZE) - src);
if (src & KPMMASK || count & KPMMASK)
return -EINVAL;
+ if (src >= max_dump_pfn * KPMSIZE)
+ return 0;
+ count = min_t(unsigned long, count, (max_dump_pfn * KPMSIZE) - src);
while (count > 0) {
/*
@@ -242,15 +263,16 @@ static ssize_t kpageflags_read(struct file *file, char __user *buf,
return ret;
}
-static const struct file_operations proc_kpageflags_operations = {
- .llseek = mem_lseek,
- .read = kpageflags_read,
+static const struct proc_ops kpageflags_proc_ops = {
+ .proc_lseek = mem_lseek,
+ .proc_read = kpageflags_read,
};
#ifdef CONFIG_MEMCG
static ssize_t kpagecgroup_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
+ const unsigned long max_dump_pfn = get_max_dump_pfn();
u64 __user *out = (u64 __user *)buf;
struct page *ppage;
unsigned long src = *ppos;
@@ -259,9 +281,11 @@ static ssize_t kpagecgroup_read(struct file *file, char __user *buf,
u64 ino;
pfn = src / KPMSIZE;
- count = min_t(unsigned long, count, (max_pfn * KPMSIZE) - src);
if (src & KPMMASK || count & KPMMASK)
return -EINVAL;
+ if (src >= max_dump_pfn * KPMSIZE)
+ return 0;
+ count = min_t(unsigned long, count, (max_dump_pfn * KPMSIZE) - src);
while (count > 0) {
/*
@@ -293,18 +317,18 @@ static ssize_t kpagecgroup_read(struct file *file, char __user *buf,
return ret;
}
-static const struct file_operations proc_kpagecgroup_operations = {
- .llseek = mem_lseek,
- .read = kpagecgroup_read,
+static const struct proc_ops kpagecgroup_proc_ops = {
+ .proc_lseek = mem_lseek,
+ .proc_read = kpagecgroup_read,
};
#endif /* CONFIG_MEMCG */
static int __init proc_page_init(void)
{
- proc_create("kpagecount", S_IRUSR, NULL, &proc_kpagecount_operations);
- proc_create("kpageflags", S_IRUSR, NULL, &proc_kpageflags_operations);
+ proc_create("kpagecount", S_IRUSR, NULL, &kpagecount_proc_ops);
+ proc_create("kpageflags", S_IRUSR, NULL, &kpageflags_proc_ops);
#ifdef CONFIG_MEMCG
- proc_create("kpagecgroup", S_IRUSR, NULL, &proc_kpagecgroup_operations);
+ proc_create("kpagecgroup", S_IRUSR, NULL, &kpagecgroup_proc_ops);
#endif
return 0;
}
diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index 76ae278df1c4..4888c5224442 100644
--- a/fs/proc/proc_net.c
+++ b/fs/proc/proc_net.c
@@ -90,12 +90,12 @@ static int seq_release_net(struct inode *ino, struct file *f)
return 0;
}
-static const struct file_operations proc_net_seq_fops = {
- .open = seq_open_net,
- .read = seq_read,
- .write = proc_simple_write,
- .llseek = seq_lseek,
- .release = seq_release_net,
+static const struct proc_ops proc_net_seq_ops = {
+ .proc_open = seq_open_net,
+ .proc_read = seq_read,
+ .proc_write = proc_simple_write,
+ .proc_lseek = seq_lseek,
+ .proc_release = seq_release_net,
};
struct proc_dir_entry *proc_create_net_data(const char *name, umode_t mode,
@@ -108,7 +108,7 @@ struct proc_dir_entry *proc_create_net_data(const char *name, umode_t mode,
if (!p)
return NULL;
pde_force_lookup(p);
- p->proc_fops = &proc_net_seq_fops;
+ p->proc_ops = &proc_net_seq_ops;
p->seq_ops = ops;
p->state_size = state_size;
return proc_register(parent, p);
@@ -152,7 +152,7 @@ struct proc_dir_entry *proc_create_net_data_write(const char *name, umode_t mode
if (!p)
return NULL;
pde_force_lookup(p);
- p->proc_fops = &proc_net_seq_fops;
+ p->proc_ops = &proc_net_seq_ops;
p->seq_ops = ops;
p->state_size = state_size;
p->write = write;
@@ -183,12 +183,12 @@ static int single_release_net(struct inode *ino, struct file *f)
return single_release(ino, f);
}
-static const struct file_operations proc_net_single_fops = {
- .open = single_open_net,
- .read = seq_read,
- .write = proc_simple_write,
- .llseek = seq_lseek,
- .release = single_release_net,
+static const struct proc_ops proc_net_single_ops = {
+ .proc_open = single_open_net,
+ .proc_read = seq_read,
+ .proc_write = proc_simple_write,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release_net,
};
struct proc_dir_entry *proc_create_net_single(const char *name, umode_t mode,
@@ -201,7 +201,7 @@ struct proc_dir_entry *proc_create_net_single(const char *name, umode_t mode,
if (!p)
return NULL;
pde_force_lookup(p);
- p->proc_fops = &proc_net_single_fops;
+ p->proc_ops = &proc_net_single_ops;
p->single_show = show;
return proc_register(parent, p);
}
@@ -244,7 +244,7 @@ struct proc_dir_entry *proc_create_net_single_write(const char *name, umode_t mo
if (!p)
return NULL;
pde_force_lookup(p);
- p->proc_fops = &proc_net_single_fops;
+ p->proc_ops = &proc_net_single_ops;
p->single_show = show;
p->write = write;
return proc_register(parent, p);
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index d80989b6c344..c75bb4632ed1 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -1720,7 +1720,7 @@ int __init proc_sys_init(void)
proc_sys_root = proc_mkdir("sys", NULL);
proc_sys_root->proc_iops = &proc_sys_dir_operations;
- proc_sys_root->proc_fops = &proc_sys_dir_file_operations;
+ proc_sys_root->proc_dir_ops = &proc_sys_dir_file_operations;
proc_sys_root->nlink = 0;
return sysctl_init();
diff --git a/fs/proc/root.c b/fs/proc/root.c
index a24976579f59..608233dfd29c 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -287,7 +287,7 @@ struct proc_dir_entry proc_root = {
.nlink = 2,
.refcnt = REFCOUNT_INIT(1),
.proc_iops = &proc_root_inode_operations,
- .proc_fops = &proc_root_operations,
+ .proc_dir_ops = &proc_root_operations,
.parent = &proc_root,
.subdir = RB_ROOT,
.name = "/proc",
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index fd931d3e77be..0449edf460f5 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -223,16 +223,16 @@ static int stat_open(struct inode *inode, struct file *file)
return single_open_size(file, show_stat, NULL, size);
}
-static const struct file_operations proc_stat_operations = {
- .open = stat_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
+static const struct proc_ops stat_proc_ops = {
+ .proc_open = stat_open,
+ .proc_read = seq_read,
+ .proc_lseek = seq_lseek,
+ .proc_release = single_release,
};
static int __init proc_stat_init(void)
{
- proc_create("stat", 0, NULL, &proc_stat_operations);
+ proc_create("stat", 0, NULL, &stat_proc_ops);
return 0;
}
fs_initcall(proc_stat_init);
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 9442631fd4af..3ba9ae83bff5 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -505,7 +505,7 @@ static void smaps_account(struct mem_size_stats *mss, struct page *page,
#ifdef CONFIG_SHMEM
static int smaps_pte_hole(unsigned long addr, unsigned long end,
- struct mm_walk *walk)
+ __always_unused int depth, struct mm_walk *walk)
{
struct mem_size_stats *mss = walk->private;
@@ -1282,7 +1282,7 @@ static int add_to_pagemap(unsigned long addr, pagemap_entry_t *pme,
}
static int pagemap_pte_hole(unsigned long start, unsigned long end,
- struct mm_walk *walk)
+ __always_unused int depth, struct mm_walk *walk)
{
struct pagemapread *pm = walk->private;
unsigned long addr = start;
diff --git a/fs/proc/uptime.c b/fs/proc/uptime.c
index a4c2791ab70b..5a1b228964fb 100644
--- a/fs/proc/uptime.c
+++ b/fs/proc/uptime.c
@@ -5,6 +5,7 @@
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/time.h>
+#include <linux/time_namespace.h>
#include <linux/kernel_stat.h>
static int uptime_proc_show(struct seq_file *m, void *v)
@@ -20,6 +21,8 @@ static int uptime_proc_show(struct seq_file *m, void *v)
nsec += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE];
ktime_get_boottime_ts64(&uptime);
+ timens_add_boottime(&uptime);
+
idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem);
idle.tv_nsec = rem;
seq_printf(m, "%lu.%02lu %lu.%02lu\n",
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 7b13988796e1..7dc800cce354 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -667,10 +667,10 @@ static int mmap_vmcore(struct file *file, struct vm_area_struct *vma)
}
#endif
-static const struct file_operations proc_vmcore_operations = {
- .read = read_vmcore,
- .llseek = default_llseek,
- .mmap = mmap_vmcore,
+static const struct proc_ops vmcore_proc_ops = {
+ .proc_read = read_vmcore,
+ .proc_lseek = default_llseek,
+ .proc_mmap = mmap_vmcore,
};
static struct vmcore* __init get_new_element(void)
@@ -1555,7 +1555,7 @@ static int __init vmcore_init(void)
elfcorehdr_free(elfcorehdr_addr);
elfcorehdr_addr = ELFCORE_ADDR_ERR;
- proc_vmcore = proc_create("vmcore", S_IRUSR, NULL, &proc_vmcore_operations);
+ proc_vmcore = proc_create("vmcore", S_IRUSR, NULL, &vmcore_proc_ops);
if (proc_vmcore)
proc_vmcore->size = vmcore_size;
return 0;
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 11:44:29 +0300