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-rw-r--r--fs/proc/Kconfig4
-rw-r--r--fs/proc/array.c2
-rw-r--r--fs/proc/base.c14
-rw-r--r--fs/proc/consoles.c10
-rw-r--r--fs/proc/generic.c18
-rw-r--r--fs/proc/inode.c16
-rw-r--r--fs/proc/kcore.c3
-rw-r--r--fs/proc/meminfo.c7
-rw-r--r--fs/proc/namespaces.c8
-rw-r--r--fs/proc/nommu.c12
-rw-r--r--fs/proc/proc_devtree.c3
-rw-r--r--fs/proc/self.c10
-rw-r--r--fs/proc/task_mmu.c53
-rw-r--r--fs/proc/task_nommu.c19
14 files changed, 71 insertions, 108 deletions
diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig
index 15af6222f8a4..2183fcf41d59 100644
--- a/fs/proc/Kconfig
+++ b/fs/proc/Kconfig
@@ -31,6 +31,10 @@ config PROC_FS
config PROC_KCORE
bool "/proc/kcore support" if !ARM
depends on PROC_FS && MMU
+ help
+ Provides a virtual ELF core file of the live kernel. This can
+ be read with gdb and other ELF tools. No modifications can be
+ made using this mechanism.
config PROC_VMCORE
bool "/proc/vmcore support"
diff --git a/fs/proc/array.c b/fs/proc/array.c
index cbd0f1b324b9..1bd2077187fd 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -183,6 +183,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
seq_printf(m,
"State:\t%s\n"
"Tgid:\t%d\n"
+ "Ngid:\t%d\n"
"Pid:\t%d\n"
"PPid:\t%d\n"
"TracerPid:\t%d\n"
@@ -190,6 +191,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
"Gid:\t%d\t%d\t%d\t%d\n",
get_task_state(p),
task_tgid_nr_ns(p, ns),
+ task_numa_group_id(p),
pid_nr_ns(pid, ns),
ppid, tpid,
from_kuid_munged(user_ns, cred->uid),
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 1485e38daaa3..03c8d747be48 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1151,10 +1151,16 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf,
goto out_free_page;
}
- kloginuid = make_kuid(file->f_cred->user_ns, loginuid);
- if (!uid_valid(kloginuid)) {
- length = -EINVAL;
- goto out_free_page;
+
+ /* is userspace tring to explicitly UNSET the loginuid? */
+ if (loginuid == AUDIT_UID_UNSET) {
+ kloginuid = INVALID_UID;
+ } else {
+ kloginuid = make_kuid(file->f_cred->user_ns, loginuid);
+ if (!uid_valid(kloginuid)) {
+ length = -EINVAL;
+ goto out_free_page;
+ }
}
length = audit_set_loginuid(kloginuid);
diff --git a/fs/proc/consoles.c b/fs/proc/consoles.c
index b701eaa482bf..51942d5abcec 100644
--- a/fs/proc/consoles.c
+++ b/fs/proc/consoles.c
@@ -29,7 +29,6 @@ static int show_console_dev(struct seq_file *m, void *v)
char flags[ARRAY_SIZE(con_flags) + 1];
struct console *con = v;
unsigned int a;
- int len;
dev_t dev = 0;
if (con->device) {
@@ -47,11 +46,10 @@ static int show_console_dev(struct seq_file *m, void *v)
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' : '-',
+ seq_setwidth(m, 21 - 1);
+ seq_printf(m, "%s%d", con->name, con->index);
+ seq_pad(m, ' ');
+ seq_printf(m, "%c%c%c (%s)", con->read ? 'R' : '-',
con->write ? 'W' : '-', con->unblank ? 'U' : '-',
flags);
if (dev)
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 737e15615b04..cca93b6fb9a9 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -175,22 +175,6 @@ static const struct inode_operations proc_link_inode_operations = {
};
/*
- * As some entries in /proc are volatile, we want to
- * get rid of unused dentries. This could be made
- * smarter: we could keep a "volatile" flag in the
- * inode to indicate which ones to keep.
- */
-static int proc_delete_dentry(const struct dentry * dentry)
-{
- return 1;
-}
-
-static const struct dentry_operations proc_dentry_operations =
-{
- .d_delete = proc_delete_dentry,
-};
-
-/*
* Don't create negative dentries here, return -ENOENT by hand
* instead.
*/
@@ -209,7 +193,7 @@ struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *dir,
inode = proc_get_inode(dir->i_sb, de);
if (!inode)
return ERR_PTR(-ENOMEM);
- d_set_d_op(dentry, &proc_dentry_operations);
+ d_set_d_op(dentry, &simple_dentry_operations);
d_add(dentry, inode);
return NULL;
}
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 8eaa1ba793fc..28955d4b7218 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -285,19 +285,23 @@ static int proc_reg_mmap(struct file *file, struct vm_area_struct *vma)
return rv;
}
-static unsigned long proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
+static unsigned long
+proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr,
+ unsigned long len, unsigned long pgoff,
+ unsigned long flags)
{
struct proc_dir_entry *pde = PDE(file_inode(file));
unsigned long rv = -EIO;
- unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long) = NULL;
+ unsigned long (*get_area)(struct file *, unsigned long, unsigned long,
+ unsigned long, unsigned long) = NULL;
if (use_pde(pde)) {
#ifdef CONFIG_MMU
- get_unmapped_area = current->mm->get_unmapped_area;
+ get_area = current->mm->get_unmapped_area;
#endif
if (pde->proc_fops->get_unmapped_area)
- get_unmapped_area = pde->proc_fops->get_unmapped_area;
- if (get_unmapped_area)
- rv = get_unmapped_area(file, orig_addr, len, pgoff, flags);
+ get_area = pde->proc_fops->get_unmapped_area;
+ if (get_area)
+ rv = get_area(file, orig_addr, len, pgoff, flags);
unuse_pde(pde);
}
return rv;
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 06ea155e1a59..5ed0e52d6aa0 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -255,8 +255,7 @@ static int kcore_update_ram(void)
end_pfn = 0;
for_each_node_state(nid, N_MEMORY) {
unsigned long node_end;
- node_end = NODE_DATA(nid)->node_start_pfn +
- NODE_DATA(nid)->node_spanned_pages;
+ node_end = node_end_pfn(nid);
if (end_pfn < node_end)
end_pfn = node_end;
}
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 59d85d608898..a77d2b299199 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -1,8 +1,8 @@
#include <linux/fs.h>
-#include <linux/hugetlb.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/hugetlb.h>
#include <linux/mman.h>
#include <linux/mmzone.h>
#include <linux/proc_fs.h>
@@ -24,7 +24,6 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
{
struct sysinfo i;
unsigned long committed;
- unsigned long allowed;
struct vmalloc_info vmi;
long cached;
unsigned long pages[NR_LRU_LISTS];
@@ -37,8 +36,6 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
si_meminfo(&i);
si_swapinfo(&i);
committed = percpu_counter_read_positive(&vm_committed_as);
- allowed = ((totalram_pages - hugetlb_total_pages())
- * sysctl_overcommit_ratio / 100) + total_swap_pages;
cached = global_page_state(NR_FILE_PAGES) -
total_swapcache_pages() - i.bufferram;
@@ -147,7 +144,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
K(global_page_state(NR_UNSTABLE_NFS)),
K(global_page_state(NR_BOUNCE)),
K(global_page_state(NR_WRITEBACK_TEMP)),
- K(allowed),
+ K(vm_commit_limit()),
K(committed),
(unsigned long)VMALLOC_TOTAL >> 10,
vmi.used >> 10,
diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c
index 49a7fff2e83a..9ae46b87470d 100644
--- a/fs/proc/namespaces.c
+++ b/fs/proc/namespaces.c
@@ -42,12 +42,6 @@ static const struct inode_operations ns_inode_operations = {
.setattr = proc_setattr,
};
-static int ns_delete_dentry(const struct dentry *dentry)
-{
- /* Don't cache namespace inodes when not in use */
- return 1;
-}
-
static char *ns_dname(struct dentry *dentry, char *buffer, int buflen)
{
struct inode *inode = dentry->d_inode;
@@ -59,7 +53,7 @@ static char *ns_dname(struct dentry *dentry, char *buffer, int buflen)
const struct dentry_operations ns_dentry_operations =
{
- .d_delete = ns_delete_dentry,
+ .d_delete = always_delete_dentry,
.d_dname = ns_dname,
};
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index ccfd99bd1c5a..5f9bc8a746c9 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -39,7 +39,7 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region)
unsigned long ino = 0;
struct file *file;
dev_t dev = 0;
- int flags, len;
+ int flags;
flags = region->vm_flags;
file = region->vm_file;
@@ -50,8 +50,9 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region)
ino = inode->i_ino;
}
+ seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
seq_printf(m,
- "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n",
+ "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
region->vm_start,
region->vm_end,
flags & VM_READ ? 'r' : '-',
@@ -59,13 +60,10 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region)
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
((loff_t)region->vm_pgoff) << PAGE_SHIFT,
- MAJOR(dev), MINOR(dev), ino, &len);
+ MAJOR(dev), MINOR(dev), ino);
if (file) {
- len = 25 + sizeof(void *) * 6 - len;
- if (len < 1)
- len = 1;
- seq_printf(m, "%*c", len, ' ');
+ seq_pad(m, ' ');
seq_path(m, &file->f_path, "");
}
diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c
index 106a83570630..70779b2fc209 100644
--- a/fs/proc/proc_devtree.c
+++ b/fs/proc/proc_devtree.c
@@ -14,16 +14,13 @@
#include <linux/of.h>
#include <linux/export.h>
#include <linux/slab.h>
-#include <asm/prom.h>
#include <asm/uaccess.h>
#include "internal.h"
static inline void set_node_proc_entry(struct device_node *np,
struct proc_dir_entry *de)
{
-#ifdef HAVE_ARCH_DEVTREE_FIXUPS
np->pde = de;
-#endif
}
static struct proc_dir_entry *proc_device_tree;
diff --git a/fs/proc/self.c b/fs/proc/self.c
index 6b6a993b5c25..ffeb202ec942 100644
--- a/fs/proc/self.c
+++ b/fs/proc/self.c
@@ -36,18 +36,10 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
return NULL;
}
-static void proc_self_put_link(struct dentry *dentry, struct nameidata *nd,
- void *cookie)
-{
- char *s = nd_get_link(nd);
- if (!IS_ERR(s))
- kfree(s);
-}
-
static const struct inode_operations proc_self_inode_operations = {
.readlink = proc_self_readlink,
.follow_link = proc_self_follow_link,
- .put_link = proc_self_put_link,
+ .put_link = kfree_put_link,
};
static unsigned self_inum;
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 390bdab01c3c..fb52b548080d 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -62,7 +62,8 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
total_rss << (PAGE_SHIFT-10),
data << (PAGE_SHIFT-10),
mm->stack_vm << (PAGE_SHIFT-10), text, lib,
- (PTRS_PER_PTE*sizeof(pte_t)*mm->nr_ptes) >> 10,
+ (PTRS_PER_PTE * sizeof(pte_t) *
+ atomic_long_read(&mm->nr_ptes)) >> 10,
swap << (PAGE_SHIFT-10));
}
@@ -83,14 +84,6 @@ unsigned long task_statm(struct mm_struct *mm,
return mm->total_vm;
}
-static void pad_len_spaces(struct seq_file *m, int len)
-{
- len = 25 + sizeof(void*) * 6 - len;
- if (len < 1)
- len = 1;
- seq_printf(m, "%*c", len, ' ');
-}
-
#ifdef CONFIG_NUMA
/*
* These functions are for numa_maps but called in generic **maps seq_file
@@ -268,7 +261,6 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
unsigned long long pgoff = 0;
unsigned long start, end;
dev_t dev = 0;
- int len;
const char *name = NULL;
if (file) {
@@ -286,7 +278,8 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
if (stack_guard_page_end(vma, end))
end -= PAGE_SIZE;
- seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n",
+ seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
+ seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
start,
end,
flags & VM_READ ? 'r' : '-',
@@ -294,14 +287,14 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? 's' : 'p',
pgoff,
- MAJOR(dev), MINOR(dev), ino, &len);
+ MAJOR(dev), MINOR(dev), ino);
/*
* Print the dentry name for named mappings, and a
* special [heap] marker for the heap:
*/
if (file) {
- pad_len_spaces(m, len);
+ seq_pad(m, ' ');
seq_path(m, &file->f_path, "\n");
goto done;
}
@@ -333,7 +326,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
name = "[stack]";
} else {
/* Thread stack in /proc/PID/maps */
- pad_len_spaces(m, len);
+ seq_pad(m, ' ');
seq_printf(m, "[stack:%d]", tid);
}
}
@@ -341,7 +334,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
done:
if (name) {
- pad_len_spaces(m, len);
+ seq_pad(m, ' ');
seq_puts(m, name);
}
seq_putc(m, '\n');
@@ -505,9 +498,9 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
pte_t *pte;
spinlock_t *ptl;
- if (pmd_trans_huge_lock(pmd, vma) == 1) {
+ if (pmd_trans_huge_lock(pmd, vma, &ptl) == 1) {
smaps_pte_entry(*(pte_t *)pmd, addr, HPAGE_PMD_SIZE, walk);
- spin_unlock(&walk->mm->page_table_lock);
+ spin_unlock(ptl);
mss->anonymous_thp += HPAGE_PMD_SIZE;
return 0;
}
@@ -561,6 +554,9 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma)
[ilog2(VM_NONLINEAR)] = "nl",
[ilog2(VM_ARCH_1)] = "ar",
[ilog2(VM_DONTDUMP)] = "dd",
+#ifdef CONFIG_MEM_SOFT_DIRTY
+ [ilog2(VM_SOFTDIRTY)] = "sd",
+#endif
[ilog2(VM_MIXEDMAP)] = "mm",
[ilog2(VM_HUGEPAGE)] = "hg",
[ilog2(VM_NOHUGEPAGE)] = "nh",
@@ -995,13 +991,14 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
{
struct vm_area_struct *vma;
struct pagemapread *pm = walk->private;
+ spinlock_t *ptl;
pte_t *pte;
int err = 0;
pagemap_entry_t pme = make_pme(PM_NOT_PRESENT(pm->v2));
/* find the first VMA at or above 'addr' */
vma = find_vma(walk->mm, addr);
- if (vma && pmd_trans_huge_lock(pmd, vma) == 1) {
+ if (vma && pmd_trans_huge_lock(pmd, vma, &ptl) == 1) {
int pmd_flags2;
if ((vma->vm_flags & VM_SOFTDIRTY) || pmd_soft_dirty(*pmd))
@@ -1019,7 +1016,7 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
if (err)
break;
}
- spin_unlock(&walk->mm->page_table_lock);
+ spin_unlock(ptl);
return err;
}
@@ -1321,7 +1318,7 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
md = walk->private;
- if (pmd_trans_huge_lock(pmd, md->vma) == 1) {
+ if (pmd_trans_huge_lock(pmd, md->vma, &ptl) == 1) {
pte_t huge_pte = *(pte_t *)pmd;
struct page *page;
@@ -1329,7 +1326,7 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
if (page)
gather_stats(page, md, pte_dirty(huge_pte),
HPAGE_PMD_SIZE/PAGE_SIZE);
- spin_unlock(&walk->mm->page_table_lock);
+ spin_unlock(ptl);
return 0;
}
@@ -1387,8 +1384,8 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
struct mm_struct *mm = vma->vm_mm;
struct mm_walk walk = {};
struct mempolicy *pol;
- int n;
- char buffer[50];
+ char buffer[64];
+ int nid;
if (!mm)
return 0;
@@ -1404,10 +1401,8 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
walk.mm = mm;
pol = get_vma_policy(task, vma, vma->vm_start);
- n = mpol_to_str(buffer, sizeof(buffer), pol);
+ mpol_to_str(buffer, sizeof(buffer), pol);
mpol_cond_put(pol);
- if (n < 0)
- return n;
seq_printf(m, "%08lx %s", vma->vm_start, buffer);
@@ -1460,9 +1455,9 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
if (md->writeback)
seq_printf(m, " writeback=%lu", md->writeback);
- for_each_node_state(n, N_MEMORY)
- if (md->node[n])
- seq_printf(m, " N%d=%lu", n, md->node[n]);
+ for_each_node_state(nid, N_MEMORY)
+ if (md->node[nid])
+ seq_printf(m, " N%d=%lu", nid, md->node[nid]);
out:
seq_putc(m, '\n');
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 56123a6f462e..678455d2d683 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -123,14 +123,6 @@ unsigned long task_statm(struct mm_struct *mm,
return size;
}
-static void pad_len_spaces(struct seq_file *m, int len)
-{
- len = 25 + sizeof(void*) * 6 - len;
- if (len < 1)
- len = 1;
- seq_printf(m, "%*c", len, ' ');
-}
-
/*
* display a single VMA to a sequenced file
*/
@@ -142,7 +134,7 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
unsigned long ino = 0;
struct file *file;
dev_t dev = 0;
- int flags, len;
+ int flags;
unsigned long long pgoff = 0;
flags = vma->vm_flags;
@@ -155,8 +147,9 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT;
}
+ seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
seq_printf(m,
- "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu %n",
+ "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
vma->vm_start,
vma->vm_end,
flags & VM_READ ? 'r' : '-',
@@ -164,16 +157,16 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
flags & VM_EXEC ? 'x' : '-',
flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p',
pgoff,
- MAJOR(dev), MINOR(dev), ino, &len);
+ MAJOR(dev), MINOR(dev), ino);
if (file) {
- pad_len_spaces(m, len);
+ seq_pad(m, ' ');
seq_path(m, &file->f_path, "");
} else if (mm) {
pid_t tid = vm_is_stack(priv->task, vma, is_pid);
if (tid != 0) {
- pad_len_spaces(m, len);
+ seq_pad(m, ' ');
/*
* Thread stack in /proc/PID/task/TID/maps or
* the main process stack.
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-26 01:43:40 +0300