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-rw-r--r--fs/Kconfig4
-rw-r--r--fs/binfmt_elf_fdpic.c3
-rw-r--r--fs/btrfs/Kconfig1
-rw-r--r--fs/cachefiles/daemon.c4
-rw-r--r--fs/exec.c9
-rw-r--r--fs/ext4/Kconfig1
-rw-r--r--fs/ext4/super.c7
-rw-r--r--fs/gfs2/Kconfig1
-rw-r--r--fs/gfs2/sys.c16
-rw-r--r--fs/hfs/catalog.c4
-rw-r--r--fs/hfs/dir.c11
-rw-r--r--fs/hfs/super.c7
-rw-r--r--fs/jbd/Kconfig1
-rw-r--r--fs/jbd2/Kconfig1
-rw-r--r--fs/nilfs2/Kconfig1
-rw-r--r--fs/proc/base.c68
-rw-r--r--fs/proc/task_mmu.c45
-rw-r--r--fs/proc/task_nommu.c8
-rw-r--r--fs/reiserfs/Kconfig1
-rw-r--r--fs/ubifs/debug.c9
-rw-r--r--fs/ubifs/super.c7
-rw-r--r--fs/xfs/xfs_log_recover.c14
22 files changed, 176 insertions, 47 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index 64d44efad7a..f8fccaaad62 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -6,6 +6,10 @@ menu "File systems"
if BLOCK
+config FS_JOURNAL_INFO
+ bool
+ default n
+
source "fs/ext2/Kconfig"
source "fs/ext3/Kconfig"
source "fs/ext4/Kconfig"
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 38502c67987..79d2b1aa389 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -380,7 +380,8 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
down_write(&current->mm->mmap_sem);
current->mm->start_brk = do_mmap(NULL, 0, stack_size,
PROT_READ | PROT_WRITE | PROT_EXEC,
- MAP_PRIVATE | MAP_ANONYMOUS | MAP_GROWSDOWN,
+ MAP_PRIVATE | MAP_ANONYMOUS |
+ MAP_UNINITIALIZED | MAP_GROWSDOWN,
0);
if (IS_ERR_VALUE(current->mm->start_brk)) {
diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index 7bb3c020e57..402afe0a0bf 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -4,6 +4,7 @@ config BTRFS_FS
select LIBCRC32C
select ZLIB_INFLATE
select ZLIB_DEFLATE
+ select FS_JOURNAL_INFO
help
Btrfs is a new filesystem with extents, writable snapshotting,
support for multiple devices and many more features.
diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c
index 4618516dd99..c2413561ea7 100644
--- a/fs/cachefiles/daemon.c
+++ b/fs/cachefiles/daemon.c
@@ -21,6 +21,7 @@
#include <linux/mount.h>
#include <linux/statfs.h>
#include <linux/ctype.h>
+#include <linux/string.h>
#include <linux/fs_struct.h>
#include "internal.h"
@@ -257,8 +258,7 @@ static ssize_t cachefiles_daemon_write(struct file *file,
if (args == data)
goto error;
*args = '\0';
- for (args++; isspace(*args); args++)
- continue;
+ args = skip_spaces(++args);
}
/* run the appropriate command handler */
diff --git a/fs/exec.c b/fs/exec.c
index c0c636e34f6..623a5cc3076 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -923,6 +923,15 @@ char *get_task_comm(char *buf, struct task_struct *tsk)
void set_task_comm(struct task_struct *tsk, char *buf)
{
task_lock(tsk);
+
+ /*
+ * Threads may access current->comm without holding
+ * the task lock, so write the string carefully.
+ * Readers without a lock may see incomplete new
+ * names but are safe from non-terminating string reads.
+ */
+ memset(tsk->comm, 0, TASK_COMM_LEN);
+ wmb();
strlcpy(tsk->comm, buf, sizeof(tsk->comm));
task_unlock(tsk);
perf_event_comm(tsk);
diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig
index 9acf7e80813..e5f6774846e 100644
--- a/fs/ext4/Kconfig
+++ b/fs/ext4/Kconfig
@@ -2,6 +2,7 @@ config EXT4_FS
tristate "The Extended 4 (ext4) filesystem"
select JBD2
select CRC16
+ select FS_JOURNAL_INFO
help
This is the next generation of the ext3 filesystem.
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 768c111a77e..827bde1f259 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2137,11 +2137,8 @@ static int parse_strtoul(const char *buf,
{
char *endp;
- while (*buf && isspace(*buf))
- buf++;
- *value = simple_strtoul(buf, &endp, 0);
- while (*endp && isspace(*endp))
- endp++;
+ *value = simple_strtoul(skip_spaces(buf), &endp, 0);
+ endp = skip_spaces(endp);
if (*endp || *value > max)
return -EINVAL;
diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig
index 4dcddf83326..b192c661caa 100644
--- a/fs/gfs2/Kconfig
+++ b/fs/gfs2/Kconfig
@@ -10,6 +10,7 @@ config GFS2_FS
select SLOW_WORK
select QUOTA
select QUOTACTL
+ select FS_JOURNAL_INFO
help
A cluster filesystem.
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index c5dad1eb7b9..0dc34621f6a 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -85,11 +85,7 @@ static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf)
buf[0] = '\0';
if (!gfs2_uuid_valid(uuid))
return 0;
- return snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X-%02X%02X-"
- "%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n",
- uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5],
- uuid[6], uuid[7], uuid[8], uuid[9], uuid[10], uuid[11],
- uuid[12], uuid[13], uuid[14], uuid[15]);
+ return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid);
}
static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
@@ -575,14 +571,8 @@ static int gfs2_uevent(struct kset *kset, struct kobject *kobj,
add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);
if (!sdp->sd_args.ar_spectator)
add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid);
- if (gfs2_uuid_valid(uuid)) {
- add_uevent_var(env, "UUID=%02X%02X%02X%02X-%02X%02X-%02X%02X-"
- "%02X%02X-%02X%02X%02X%02X%02X%02X",
- uuid[0], uuid[1], uuid[2], uuid[3], uuid[4],
- uuid[5], uuid[6], uuid[7], uuid[8], uuid[9],
- uuid[10], uuid[11], uuid[12], uuid[13],
- uuid[14], uuid[15]);
- }
+ if (gfs2_uuid_valid(uuid))
+ add_uevent_var(env, "UUID=%pUB", uuid);
return 0;
}
diff --git a/fs/hfs/catalog.c b/fs/hfs/catalog.c
index 6d98f116ca0..424b0337f52 100644
--- a/fs/hfs/catalog.c
+++ b/fs/hfs/catalog.c
@@ -289,6 +289,10 @@ int hfs_cat_move(u32 cnid, struct inode *src_dir, struct qstr *src_name,
err = hfs_brec_find(&src_fd);
if (err)
goto out;
+ if (src_fd.entrylength > sizeof(entry) || src_fd.entrylength < 0) {
+ err = -EIO;
+ goto out;
+ }
hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset,
src_fd.entrylength);
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 7c69b98a2e4..2b3b8611b41 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -79,6 +79,11 @@ static int hfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
filp->f_pos++;
/* fall through */
case 1:
+ if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) {
+ err = -EIO;
+ goto out;
+ }
+
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
if (entry.type != HFS_CDR_THD) {
printk(KERN_ERR "hfs: bad catalog folder thread\n");
@@ -109,6 +114,12 @@ static int hfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
err = -EIO;
goto out;
}
+
+ if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) {
+ err = -EIO;
+ goto out;
+ }
+
hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength);
type = entry.type;
len = hfs_mac2asc(sb, strbuf, &fd.key->cat.CName);
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index f7fcbe49da7..5ed7252b7b2 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -409,8 +409,13 @@ static int hfs_fill_super(struct super_block *sb, void *data, int silent)
/* try to get the root inode */
hfs_find_init(HFS_SB(sb)->cat_tree, &fd);
res = hfs_cat_find_brec(sb, HFS_ROOT_CNID, &fd);
- if (!res)
+ if (!res) {
+ if (fd.entrylength > sizeof(rec) || fd.entrylength < 0) {
+ res = -EIO;
+ goto bail;
+ }
hfs_bnode_read(fd.bnode, &rec, fd.entryoffset, fd.entrylength);
+ }
if (res) {
hfs_find_exit(&fd);
goto bail_no_root;
diff --git a/fs/jbd/Kconfig b/fs/jbd/Kconfig
index 4e28beeed15..a8408983abd 100644
--- a/fs/jbd/Kconfig
+++ b/fs/jbd/Kconfig
@@ -1,5 +1,6 @@
config JBD
tristate
+ select FS_JOURNAL_INFO
help
This is a generic journalling layer for block devices. It is
currently used by the ext3 file system, but it could also be
diff --git a/fs/jbd2/Kconfig b/fs/jbd2/Kconfig
index f32f346f4b0..0f7d1ceafdf 100644
--- a/fs/jbd2/Kconfig
+++ b/fs/jbd2/Kconfig
@@ -1,6 +1,7 @@
config JBD2
tristate
select CRC32
+ select FS_JOURNAL_INFO
help
This is a generic journaling layer for block devices that support
both 32-bit and 64-bit block numbers. It is currently used by
diff --git a/fs/nilfs2/Kconfig b/fs/nilfs2/Kconfig
index 251da07b2a1..1225af7b216 100644
--- a/fs/nilfs2/Kconfig
+++ b/fs/nilfs2/Kconfig
@@ -2,6 +2,7 @@ config NILFS2_FS
tristate "NILFS2 file system support (EXPERIMENTAL)"
depends on EXPERIMENTAL
select CRC32
+ select FS_JOURNAL_INFO
help
NILFS2 is a log-structured file system (LFS) supporting continuous
snapshotting. In addition to versioning capability of the entire
diff --git a/fs/proc/base.c b/fs/proc/base.c
index af643b5aefe..4df4a464a91 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1265,6 +1265,72 @@ static const struct file_operations proc_pid_sched_operations = {
#endif
+static ssize_t comm_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[TASK_COMM_LEN];
+
+ memset(buffer, 0, sizeof(buffer));
+ if (count > sizeof(buffer) - 1)
+ count = sizeof(buffer) - 1;
+ if (copy_from_user(buffer, buf, count))
+ return -EFAULT;
+
+ p = get_proc_task(inode);
+ if (!p)
+ return -ESRCH;
+
+ if (same_thread_group(current, p))
+ set_task_comm(p, buffer);
+ else
+ count = -EINVAL;
+
+ put_task_struct(p);
+
+ return count;
+}
+
+static int comm_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;
+
+ task_lock(p);
+ seq_printf(m, "%s\n", p->comm);
+ task_unlock(p);
+
+ put_task_struct(p);
+
+ return 0;
+}
+
+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;
+}
+
+static const struct file_operations proc_pid_set_comm_operations = {
+ .open = comm_open,
+ .read = seq_read,
+ .write = comm_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
/*
* We added or removed a vma mapping the executable. The vmas are only mapped
* during exec and are not mapped with the mmap system call.
@@ -2504,6 +2570,7 @@ static const struct pid_entry tgid_base_stuff[] = {
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_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),
#endif
@@ -2838,6 +2905,7 @@ static const struct pid_entry tid_base_stuff[] = {
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_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),
#endif
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 2a1bef9203c..47c03f4336b 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -650,6 +650,50 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
return err;
}
+static u64 huge_pte_to_pagemap_entry(pte_t pte, int offset)
+{
+ u64 pme = 0;
+ if (pte_present(pte))
+ pme = PM_PFRAME(pte_pfn(pte) + offset)
+ | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT;
+ return pme;
+}
+
+static int pagemap_hugetlb_range(pte_t *pte, unsigned long addr,
+ unsigned long end, struct mm_walk *walk)
+{
+ struct vm_area_struct *vma;
+ struct pagemapread *pm = walk->private;
+ struct hstate *hs = NULL;
+ int err = 0;
+
+ vma = find_vma(walk->mm, addr);
+ if (vma)
+ hs = hstate_vma(vma);
+ for (; addr != end; addr += PAGE_SIZE) {
+ u64 pfn = PM_NOT_PRESENT;
+
+ if (vma && (addr >= vma->vm_end)) {
+ vma = find_vma(walk->mm, addr);
+ if (vma)
+ hs = hstate_vma(vma);
+ }
+
+ if (vma && (vma->vm_start <= addr) && is_vm_hugetlb_page(vma)) {
+ /* calculate pfn of the "raw" page in the hugepage. */
+ int offset = (addr & ~huge_page_mask(hs)) >> PAGE_SHIFT;
+ pfn = huge_pte_to_pagemap_entry(*pte, offset);
+ }
+ err = add_to_pagemap(addr, pfn, pm);
+ if (err)
+ return err;
+ }
+
+ cond_resched();
+
+ return err;
+}
+
/*
* /proc/pid/pagemap - an array mapping virtual pages to pfns
*
@@ -742,6 +786,7 @@ static ssize_t pagemap_read(struct file *file, char __user *buf,
pagemap_walk.pmd_entry = pagemap_pte_range;
pagemap_walk.pte_hole = pagemap_pte_hole;
+ pagemap_walk.hugetlb_entry = pagemap_hugetlb_range;
pagemap_walk.mm = mm;
pagemap_walk.private = &pm;
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 8f5c05d3dbd..5d9fd64ef81 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -110,9 +110,13 @@ int task_statm(struct mm_struct *mm, int *shared, int *text,
}
}
- size += (*text = mm->end_code - mm->start_code);
- size += (*data = mm->start_stack - mm->start_data);
+ *text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
+ >> PAGE_SHIFT;
+ *data = (PAGE_ALIGN(mm->start_stack) - (mm->start_data & PAGE_MASK))
+ >> PAGE_SHIFT;
up_read(&mm->mmap_sem);
+ size >>= PAGE_SHIFT;
+ size += *text + *data;
*resident = size;
return size;
}
diff --git a/fs/reiserfs/Kconfig b/fs/reiserfs/Kconfig
index 513f431038f..ac7cd75c86f 100644
--- a/fs/reiserfs/Kconfig
+++ b/fs/reiserfs/Kconfig
@@ -1,6 +1,7 @@
config REISERFS_FS
tristate "Reiserfs support"
select CRC32
+ select FS_JOURNAL_INFO
help
Stores not just filenames but the files themselves in a balanced
tree. Uses journalling.
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 8a771c59ac3..90492327b38 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -350,13 +350,8 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node)
le32_to_cpu(sup->fmt_version));
printk(KERN_DEBUG "\ttime_gran %u\n",
le32_to_cpu(sup->time_gran));
- printk(KERN_DEBUG "\tUUID %02X%02X%02X%02X-%02X%02X"
- "-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n",
- sup->uuid[0], sup->uuid[1], sup->uuid[2], sup->uuid[3],
- sup->uuid[4], sup->uuid[5], sup->uuid[6], sup->uuid[7],
- sup->uuid[8], sup->uuid[9], sup->uuid[10], sup->uuid[11],
- sup->uuid[12], sup->uuid[13], sup->uuid[14],
- sup->uuid[15]);
+ printk(KERN_DEBUG "\tUUID %pUB\n",
+ sup->uuid);
break;
}
case UBIFS_MST_NODE:
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 943ad562453..43f9d19a6f3 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1393,12 +1393,7 @@ static int mount_ubifs(struct ubifs_info *c)
c->leb_size, c->leb_size >> 10);
dbg_msg("data journal heads: %d",
c->jhead_cnt - NONDATA_JHEADS_CNT);
- dbg_msg("UUID: %02X%02X%02X%02X-%02X%02X"
- "-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
- c->uuid[0], c->uuid[1], c->uuid[2], c->uuid[3],
- c->uuid[4], c->uuid[5], c->uuid[6], c->uuid[7],
- c->uuid[8], c->uuid[9], c->uuid[10], c->uuid[11],
- c->uuid[12], c->uuid[13], c->uuid[14], c->uuid[15]);
+ dbg_msg("UUID: %pUB", c->uuid);
dbg_msg("big_lpt %d", c->big_lpt);
dbg_msg("log LEBs: %d (%d - %d)",
c->log_lebs, UBIFS_LOG_LNUM, c->log_last);
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index abc2034d83e..69ac2e5ef20 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -226,16 +226,10 @@ xlog_header_check_dump(
xfs_mount_t *mp,
xlog_rec_header_t *head)
{
- int b;
-
- cmn_err(CE_DEBUG, "%s: SB : uuid = ", __func__);
- for (b = 0; b < 16; b++)
- cmn_err(CE_DEBUG, "%02x", ((__uint8_t *)&mp->m_sb.sb_uuid)[b]);
- cmn_err(CE_DEBUG, ", fmt = %d\n", XLOG_FMT);
- cmn_err(CE_DEBUG, " log : uuid = ");
- for (b = 0; b < 16; b++)
- cmn_err(CE_DEBUG, "%02x", ((__uint8_t *)&head->h_fs_uuid)[b]);
- cmn_err(CE_DEBUG, ", fmt = %d\n", be32_to_cpu(head->h_fmt));
+ cmn_err(CE_DEBUG, "%s: SB : uuid = %pU, fmt = %d\n",
+ __func__, &mp->m_sb.sb_uuid, XLOG_FMT);
+ cmn_err(CE_DEBUG, " log : uuid = %pU, fmt = %d\n",
+ &head->h_fs_uuid, be32_to_cpu(head->h_fmt));
}
#else
#define xlog_header_check_dump(mp, head)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 12:32:40 +0000